/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/pthread-ext/37_stack_lock_p0_vs_concur.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:24:28,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:24:28,398 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 03:24:28,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:24:28,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:24:28,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:24:28,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:24:28,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:24:28,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:24:28,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:24:28,440 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:24:28,440 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:24:28,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:24:28,441 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:24:28,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:24:28,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:24:28,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:24:28,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:24:28,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:24:28,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:24:28,443 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:24:28,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:24:28,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:24:28,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:24:28,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:24:28,445 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:24:28,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:24:28,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:24:28,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:24:28,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:24:28,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:24:28,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:24:28,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:24:28,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:24:28,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:24:28,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:24:28,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:24:28,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:24:28,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:24:28,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:24:28,755 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:24:28,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2023-08-27 03:24:30,000 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:24:30,265 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:24:30,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2023-08-27 03:24:30,292 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af4a596d/0cfc4bf89a6241ffb0f6da59e59654f1/FLAG2689e09cf [2023-08-27 03:24:30,308 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af4a596d/0cfc4bf89a6241ffb0f6da59e59654f1 [2023-08-27 03:24:30,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:24:30,313 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:24:30,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:24:30,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:24:30,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:24:30,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419dd9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30, skipping insertion in model container [2023-08-27 03:24:30,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,369 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:24:30,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:24:30,662 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:24:30,691 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-27 03:24:30,693 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-27 03:24:30,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:24:30,757 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:24:30,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30 WrapperNode [2023-08-27 03:24:30,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:24:30,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:24:30,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:24:30,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:24:30,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,812 INFO L138 Inliner]: procedures = 171, calls = 27, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 96 [2023-08-27 03:24:30,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:24:30,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:24:30,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:24:30,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:24:30,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:24:30,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:24:30,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:24:30,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:24:30,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (1/1) ... [2023-08-27 03:24:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:24:30,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:24:30,886 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 03:24:30,908 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 03:24:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 03:24:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-27 03:24:30,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-27 03:24:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:24:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:24:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:24:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:24:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:24:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:24:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:24:30,924 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 03:24:31,066 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:24:31,074 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:24:31,280 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:24:31,361 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:24:31,361 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 03:24:31,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:24:31 BoogieIcfgContainer [2023-08-27 03:24:31,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:24:31,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:24:31,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:24:31,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:24:31,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:24:30" (1/3) ... [2023-08-27 03:24:31,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d0f49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:24:31, skipping insertion in model container [2023-08-27 03:24:31,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:30" (2/3) ... [2023-08-27 03:24:31,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d0f49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:24:31, skipping insertion in model container [2023-08-27 03:24:31,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:24:31" (3/3) ... [2023-08-27 03:24:31,377 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2023-08-27 03:24:31,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:24:31,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 03:24:31,393 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:24:31,458 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:31,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 187 flow [2023-08-27 03:24:31,542 INFO L124 PetriNetUnfolderBase]: 8/101 cut-off events. [2023-08-27 03:24:31,544 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:24:31,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 8/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 135 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-27 03:24:31,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 91 transitions, 187 flow [2023-08-27 03:24:31,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 91 transitions, 187 flow [2023-08-27 03:24:31,555 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:31,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 91 transitions, 187 flow [2023-08-27 03:24:31,565 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 91 transitions, 187 flow [2023-08-27 03:24:31,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 187 flow [2023-08-27 03:24:31,585 INFO L124 PetriNetUnfolderBase]: 8/101 cut-off events. [2023-08-27 03:24:31,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:24:31,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 8/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 135 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-27 03:24:31,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 1638 [2023-08-27 03:24:33,376 INFO L134 LiptonReduction]: Checked pairs total: 2523 [2023-08-27 03:24:33,376 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-27 03:24:33,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:33,394 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:33,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:33,398 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:33,399 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-27 03:24:33,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:24:33,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:33,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 03:24:33,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:33,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1313433863, now seen corresponding path program 1 times [2023-08-27 03:24:33,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:33,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246933966] [2023-08-27 03:24:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:33,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:33,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:33,562 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:33,564 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:33,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:24:33,566 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:33,572 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:33,573 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:33,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 03:24:33,632 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:33,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 155 transitions, 322 flow [2023-08-27 03:24:33,697 INFO L124 PetriNetUnfolderBase]: 15/177 cut-off events. [2023-08-27 03:24:33,698 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 03:24:33,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 177 events. 15/177 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 472 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 138. Up to 6 conditions per place. [2023-08-27 03:24:33,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 155 transitions, 322 flow [2023-08-27 03:24:33,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 155 transitions, 322 flow [2023-08-27 03:24:33,703 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:33,703 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 155 transitions, 322 flow [2023-08-27 03:24:33,704 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 155 transitions, 322 flow [2023-08-27 03:24:33,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 155 transitions, 322 flow [2023-08-27 03:24:33,728 INFO L124 PetriNetUnfolderBase]: 15/177 cut-off events. [2023-08-27 03:24:33,728 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 03:24:33,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 177 events. 15/177 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 472 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 138. Up to 6 conditions per place. [2023-08-27 03:24:33,735 INFO L119 LiptonReduction]: Number of co-enabled transitions 11340 [2023-08-27 03:24:35,263 INFO L134 LiptonReduction]: Checked pairs total: 34569 [2023-08-27 03:24:35,263 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-27 03:24:35,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:35,266 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:35,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:35,271 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:35,272 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-08-27 03:24:35,272 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 03:24:35,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:35,272 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 03:24:35,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:35,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash 595219481, now seen corresponding path program 1 times [2023-08-27 03:24:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:35,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043548292] [2023-08-27 03:24:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:35,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:35,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:35,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:35,309 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:35,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:35,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:24:35,309 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:35,310 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:35,310 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:35,310 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 03:24:35,351 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:35,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 219 transitions, 459 flow [2023-08-27 03:24:35,398 INFO L124 PetriNetUnfolderBase]: 22/253 cut-off events. [2023-08-27 03:24:35,398 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 03:24:35,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 253 events. 22/253 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 843 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 201. Up to 8 conditions per place. [2023-08-27 03:24:35,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 219 transitions, 459 flow [2023-08-27 03:24:35,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 219 transitions, 459 flow [2023-08-27 03:24:35,404 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:35,404 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 219 transitions, 459 flow [2023-08-27 03:24:35,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 219 transitions, 459 flow [2023-08-27 03:24:35,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 219 transitions, 459 flow [2023-08-27 03:24:35,444 INFO L124 PetriNetUnfolderBase]: 22/253 cut-off events. [2023-08-27 03:24:35,445 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 03:24:35,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 253 events. 22/253 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 843 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 201. Up to 8 conditions per place. [2023-08-27 03:24:35,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 29106 [2023-08-27 03:24:37,726 INFO L134 LiptonReduction]: Checked pairs total: 85312 [2023-08-27 03:24:37,727 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-27 03:24:37,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:37,729 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:37,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:37,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:37,737 INFO L124 PetriNetUnfolderBase]: 2/75 cut-off events. [2023-08-27 03:24:37,737 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 03:24:37,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:37,737 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 03:24:37,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:37,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash -990148086, now seen corresponding path program 1 times [2023-08-27 03:24:37,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:37,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601417934] [2023-08-27 03:24:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:37,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:37,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:37,778 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:37,778 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:37,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:37,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 03:24:37,778 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:37,779 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:37,779 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:37,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 03:24:37,827 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:37,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 283 transitions, 598 flow [2023-08-27 03:24:37,881 INFO L124 PetriNetUnfolderBase]: 29/329 cut-off events. [2023-08-27 03:24:37,883 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 03:24:37,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 329 events. 29/329 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1243 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 264. Up to 10 conditions per place. [2023-08-27 03:24:37,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 283 transitions, 598 flow [2023-08-27 03:24:37,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 283 transitions, 598 flow [2023-08-27 03:24:37,896 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:37,896 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 283 transitions, 598 flow [2023-08-27 03:24:37,896 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 283 transitions, 598 flow [2023-08-27 03:24:37,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 283 transitions, 598 flow [2023-08-27 03:24:37,941 INFO L124 PetriNetUnfolderBase]: 29/329 cut-off events. [2023-08-27 03:24:37,942 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 03:24:37,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 329 events. 29/329 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1243 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 264. Up to 10 conditions per place. [2023-08-27 03:24:37,963 INFO L119 LiptonReduction]: Number of co-enabled transitions 54936 [2023-08-27 03:24:40,477 INFO L134 LiptonReduction]: Checked pairs total: 174785 [2023-08-27 03:24:40,477 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-27 03:24:40,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:40,479 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:40,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:40,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:40,492 INFO L124 PetriNetUnfolderBase]: 6/108 cut-off events. [2023-08-27 03:24:40,492 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 03:24:40,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:40,492 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:40,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:40,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1377745955, now seen corresponding path program 1 times [2023-08-27 03:24:40,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:40,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280334684] [2023-08-27 03:24:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:40,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:40,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:40,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:40,570 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:40,570 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:40,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 03:24:40,571 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:40,571 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:40,571 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:40,571 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 03:24:40,616 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:40,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 347 transitions, 739 flow [2023-08-27 03:24:40,688 INFO L124 PetriNetUnfolderBase]: 36/405 cut-off events. [2023-08-27 03:24:40,689 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 03:24:40,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 405 events. 36/405 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1622 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 342. Up to 12 conditions per place. [2023-08-27 03:24:40,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 347 transitions, 739 flow [2023-08-27 03:24:40,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 347 transitions, 739 flow [2023-08-27 03:24:40,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:40,699 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 327 places, 347 transitions, 739 flow [2023-08-27 03:24:40,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 327 places, 347 transitions, 739 flow [2023-08-27 03:24:40,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 347 transitions, 739 flow [2023-08-27 03:24:40,802 INFO L124 PetriNetUnfolderBase]: 36/405 cut-off events. [2023-08-27 03:24:40,802 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 03:24:40,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 405 events. 36/405 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1622 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 342. Up to 12 conditions per place. [2023-08-27 03:24:40,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 88830 [2023-08-27 03:24:43,509 INFO L134 LiptonReduction]: Checked pairs total: 280984 [2023-08-27 03:24:43,510 INFO L136 LiptonReduction]: Total number of compositions: 278 [2023-08-27 03:24:43,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:43,511 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:43,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:43,526 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:43,526 INFO L124 PetriNetUnfolderBase]: 7/141 cut-off events. [2023-08-27 03:24:43,526 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 03:24:43,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:43,526 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:43,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:43,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:43,527 INFO L85 PathProgramCache]: Analyzing trace with hash 122297068, now seen corresponding path program 1 times [2023-08-27 03:24:43,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:43,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73525863] [2023-08-27 03:24:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:43,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:43,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:43,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:43,562 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:43,562 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:43,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 03:24:43,563 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:43,563 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:43,563 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:43,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 03:24:43,605 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:43,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 411 transitions, 882 flow [2023-08-27 03:24:43,683 INFO L124 PetriNetUnfolderBase]: 43/481 cut-off events. [2023-08-27 03:24:43,683 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-27 03:24:43,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 481 events. 43/481 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2024 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 424. Up to 14 conditions per place. [2023-08-27 03:24:43,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 411 transitions, 882 flow [2023-08-27 03:24:43,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 387 places, 411 transitions, 882 flow [2023-08-27 03:24:43,695 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:43,695 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 387 places, 411 transitions, 882 flow [2023-08-27 03:24:43,695 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 387 places, 411 transitions, 882 flow [2023-08-27 03:24:43,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 411 transitions, 882 flow [2023-08-27 03:24:43,770 INFO L124 PetriNetUnfolderBase]: 43/481 cut-off events. [2023-08-27 03:24:43,770 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-27 03:24:43,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 481 events. 43/481 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2024 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 424. Up to 14 conditions per place. [2023-08-27 03:24:43,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 130788 [2023-08-27 03:24:47,024 INFO L134 LiptonReduction]: Checked pairs total: 417342 [2023-08-27 03:24:47,025 INFO L136 LiptonReduction]: Total number of compositions: 318 [2023-08-27 03:24:47,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:47,027 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:47,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:47,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:47,047 INFO L124 PetriNetUnfolderBase]: 11/180 cut-off events. [2023-08-27 03:24:47,047 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-27 03:24:47,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:47,047 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:47,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:47,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:47,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1737945059, now seen corresponding path program 1 times [2023-08-27 03:24:47,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:47,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487762749] [2023-08-27 03:24:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:47,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:47,076 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:47,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:47,100 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:47,100 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:47,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 03:24:47,100 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:47,109 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:47,110 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:47,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-27 03:24:47,199 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:47,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 475 transitions, 1027 flow [2023-08-27 03:24:47,300 INFO L124 PetriNetUnfolderBase]: 50/557 cut-off events. [2023-08-27 03:24:47,301 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 03:24:47,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 557 events. 50/557 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2445 event pairs, 0 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 509. Up to 16 conditions per place. [2023-08-27 03:24:47,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 475 transitions, 1027 flow [2023-08-27 03:24:47,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 475 transitions, 1027 flow [2023-08-27 03:24:47,316 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:47,316 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 475 transitions, 1027 flow [2023-08-27 03:24:47,316 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 475 transitions, 1027 flow [2023-08-27 03:24:47,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 475 transitions, 1027 flow [2023-08-27 03:24:47,411 INFO L124 PetriNetUnfolderBase]: 50/557 cut-off events. [2023-08-27 03:24:47,411 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 03:24:47,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 557 events. 50/557 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2445 event pairs, 0 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 509. Up to 16 conditions per place. [2023-08-27 03:24:47,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 180810 [2023-08-27 03:24:50,858 INFO L134 LiptonReduction]: Checked pairs total: 583257 [2023-08-27 03:24:50,858 INFO L136 LiptonReduction]: Total number of compositions: 375 [2023-08-27 03:24:50,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:50,861 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:50,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:50,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:50,884 INFO L124 PetriNetUnfolderBase]: 12/212 cut-off events. [2023-08-27 03:24:50,884 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 03:24:50,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:50,884 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:50,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:50,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:50,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2084552336, now seen corresponding path program 1 times [2023-08-27 03:24:50,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:50,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669316384] [2023-08-27 03:24:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:50,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:50,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:50,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:50,947 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:50,947 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:50,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 03:24:50,947 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:50,950 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:50,950 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:50,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-27 03:24:51,039 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:51,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 539 transitions, 1174 flow [2023-08-27 03:24:51,174 INFO L124 PetriNetUnfolderBase]: 57/633 cut-off events. [2023-08-27 03:24:51,174 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-27 03:24:51,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 633 events. 57/633 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2806 event pairs, 0 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 595. Up to 18 conditions per place. [2023-08-27 03:24:51,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 507 places, 539 transitions, 1174 flow [2023-08-27 03:24:51,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 507 places, 539 transitions, 1174 flow [2023-08-27 03:24:51,195 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:51,196 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 507 places, 539 transitions, 1174 flow [2023-08-27 03:24:51,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 507 places, 539 transitions, 1174 flow [2023-08-27 03:24:51,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 539 transitions, 1174 flow [2023-08-27 03:24:51,333 INFO L124 PetriNetUnfolderBase]: 57/633 cut-off events. [2023-08-27 03:24:51,333 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-27 03:24:51,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 633 events. 57/633 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2806 event pairs, 0 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 595. Up to 18 conditions per place. [2023-08-27 03:24:51,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 238896 [2023-08-27 03:24:55,517 INFO L134 LiptonReduction]: Checked pairs total: 773226 [2023-08-27 03:24:55,518 INFO L136 LiptonReduction]: Total number of compositions: 426 [2023-08-27 03:24:55,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:55,520 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:55,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:55,553 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:55,553 INFO L124 PetriNetUnfolderBase]: 16/252 cut-off events. [2023-08-27 03:24:55,553 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-27 03:24:55,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:55,553 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:55,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:55,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:55,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1561315456, now seen corresponding path program 1 times [2023-08-27 03:24:55,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:55,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202426800] [2023-08-27 03:24:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:55,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:55,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:55,586 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:55,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:55,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 03:24:55,587 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:55,587 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:55,587 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:55,587 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-27 03:24:55,640 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:55,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 567 places, 603 transitions, 1323 flow [2023-08-27 03:24:55,813 INFO L124 PetriNetUnfolderBase]: 64/709 cut-off events. [2023-08-27 03:24:55,813 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 03:24:55,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 709 events. 64/709 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3205 event pairs, 0 based on Foata normal form. 0/536 useless extension candidates. Maximal degree in co-relation 682. Up to 20 conditions per place. [2023-08-27 03:24:55,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 567 places, 603 transitions, 1323 flow [2023-08-27 03:24:55,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 567 places, 603 transitions, 1323 flow [2023-08-27 03:24:55,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:55,836 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 567 places, 603 transitions, 1323 flow [2023-08-27 03:24:55,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 567 places, 603 transitions, 1323 flow [2023-08-27 03:24:55,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 567 places, 603 transitions, 1323 flow [2023-08-27 03:24:56,004 INFO L124 PetriNetUnfolderBase]: 64/709 cut-off events. [2023-08-27 03:24:56,004 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 03:24:56,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 709 events. 64/709 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3205 event pairs, 0 based on Foata normal form. 0/536 useless extension candidates. Maximal degree in co-relation 682. Up to 20 conditions per place. [2023-08-27 03:24:56,145 INFO L119 LiptonReduction]: Number of co-enabled transitions 305046 [2023-08-27 03:25:00,202 INFO L134 LiptonReduction]: Checked pairs total: 974269 [2023-08-27 03:25:00,203 INFO L136 LiptonReduction]: Total number of compositions: 472 [2023-08-27 03:25:00,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:00,205 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:00,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:00,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:00,242 INFO L124 PetriNetUnfolderBase]: 15/280 cut-off events. [2023-08-27 03:25:00,242 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 03:25:00,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:00,242 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:00,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:00,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash 778910218, now seen corresponding path program 1 times [2023-08-27 03:25:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:00,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658474540] [2023-08-27 03:25:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:00,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:00,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:00,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:00,276 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:00,276 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:00,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 03:25:00,276 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:00,276 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:00,277 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:00,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-27 03:25:00,343 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:00,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 627 places, 667 transitions, 1474 flow [2023-08-27 03:25:00,569 INFO L124 PetriNetUnfolderBase]: 71/785 cut-off events. [2023-08-27 03:25:00,569 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-27 03:25:00,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 785 events. 71/785 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3599 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 770. Up to 22 conditions per place. [2023-08-27 03:25:00,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 627 places, 667 transitions, 1474 flow [2023-08-27 03:25:00,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 627 places, 667 transitions, 1474 flow [2023-08-27 03:25:00,594 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:00,594 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 627 places, 667 transitions, 1474 flow [2023-08-27 03:25:00,594 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 627 places, 667 transitions, 1474 flow [2023-08-27 03:25:00,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 627 places, 667 transitions, 1474 flow [2023-08-27 03:25:00,782 INFO L124 PetriNetUnfolderBase]: 71/785 cut-off events. [2023-08-27 03:25:00,782 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-27 03:25:00,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 785 events. 71/785 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3599 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 770. Up to 22 conditions per place. [2023-08-27 03:25:00,877 INFO L119 LiptonReduction]: Number of co-enabled transitions 379260 [2023-08-27 03:25:05,621 INFO L134 LiptonReduction]: Checked pairs total: 1192210 [2023-08-27 03:25:05,621 INFO L136 LiptonReduction]: Total number of compositions: 522 [2023-08-27 03:25:05,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:05,623 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:05,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:05,667 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:05,667 INFO L124 PetriNetUnfolderBase]: 16/322 cut-off events. [2023-08-27 03:25:05,667 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-27 03:25:05,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:05,667 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:05,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:05,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1320494285, now seen corresponding path program 1 times [2023-08-27 03:25:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:05,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557369498] [2023-08-27 03:25:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:05,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:05,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:05,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:05,715 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:05,716 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:05,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 03:25:05,716 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:05,716 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:05,716 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:05,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-27 03:25:05,785 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:05,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 731 transitions, 1627 flow [2023-08-27 03:25:06,022 INFO L124 PetriNetUnfolderBase]: 78/861 cut-off events. [2023-08-27 03:25:06,023 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-27 03:25:06,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 861 events. 78/861 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4007 event pairs, 0 based on Foata normal form. 0/650 useless extension candidates. Maximal degree in co-relation 859. Up to 24 conditions per place. [2023-08-27 03:25:06,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 687 places, 731 transitions, 1627 flow [2023-08-27 03:25:06,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 687 places, 731 transitions, 1627 flow [2023-08-27 03:25:06,058 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:06,058 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 687 places, 731 transitions, 1627 flow [2023-08-27 03:25:06,058 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 687 places, 731 transitions, 1627 flow [2023-08-27 03:25:06,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 731 transitions, 1627 flow [2023-08-27 03:25:06,281 INFO L124 PetriNetUnfolderBase]: 78/861 cut-off events. [2023-08-27 03:25:06,281 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-27 03:25:06,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 861 events. 78/861 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4007 event pairs, 0 based on Foata normal form. 0/650 useless extension candidates. Maximal degree in co-relation 859. Up to 24 conditions per place. [2023-08-27 03:25:06,348 INFO L119 LiptonReduction]: Number of co-enabled transitions 461538 [2023-08-27 03:25:11,719 INFO L134 LiptonReduction]: Checked pairs total: 1456180 [2023-08-27 03:25:11,719 INFO L136 LiptonReduction]: Total number of compositions: 569 [2023-08-27 03:25:11,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:11,721 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:11,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:11,767 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:11,768 INFO L124 PetriNetUnfolderBase]: 21/354 cut-off events. [2023-08-27 03:25:11,768 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-27 03:25:11,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:11,768 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:11,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:11,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:11,768 INFO L85 PathProgramCache]: Analyzing trace with hash 692009784, now seen corresponding path program 1 times [2023-08-27 03:25:11,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:11,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743347763] [2023-08-27 03:25:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:11,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:11,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:11,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:11,810 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:11,810 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:11,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 03:25:11,810 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:11,811 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:11,811 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:11,811 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-27 03:25:11,914 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:11,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 747 places, 795 transitions, 1782 flow [2023-08-27 03:25:12,140 INFO L124 PetriNetUnfolderBase]: 85/937 cut-off events. [2023-08-27 03:25:12,140 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-27 03:25:12,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 937 events. 85/937 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4403 event pairs, 0 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 949. Up to 26 conditions per place. [2023-08-27 03:25:12,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 747 places, 795 transitions, 1782 flow [2023-08-27 03:25:12,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 747 places, 795 transitions, 1782 flow [2023-08-27 03:25:12,176 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:12,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 747 places, 795 transitions, 1782 flow [2023-08-27 03:25:12,176 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 747 places, 795 transitions, 1782 flow [2023-08-27 03:25:12,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 747 places, 795 transitions, 1782 flow [2023-08-27 03:25:12,444 INFO L124 PetriNetUnfolderBase]: 85/937 cut-off events. [2023-08-27 03:25:12,444 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-27 03:25:12,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 937 events. 85/937 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4403 event pairs, 0 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 949. Up to 26 conditions per place. [2023-08-27 03:25:12,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 551880 [2023-08-27 03:25:18,556 INFO L134 LiptonReduction]: Checked pairs total: 1754584 [2023-08-27 03:25:18,556 INFO L136 LiptonReduction]: Total number of compositions: 623 [2023-08-27 03:25:18,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:18,558 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:18,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:18,614 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:18,614 INFO L124 PetriNetUnfolderBase]: 24/392 cut-off events. [2023-08-27 03:25:18,614 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-27 03:25:18,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:18,614 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 03:25:18,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:18,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:18,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1711757971, now seen corresponding path program 1 times [2023-08-27 03:25:18,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:18,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518556790] [2023-08-27 03:25:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:18,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:18,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:18,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:18,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:18,656 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:18,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 03:25:18,656 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:18,657 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:18,657 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:18,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-27 03:25:18,737 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:18,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 807 places, 859 transitions, 1939 flow [2023-08-27 03:25:19,116 INFO L124 PetriNetUnfolderBase]: 92/1013 cut-off events. [2023-08-27 03:25:19,117 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-08-27 03:25:19,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 1013 events. 92/1013 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4841 event pairs, 0 based on Foata normal form. 0/764 useless extension candidates. Maximal degree in co-relation 1040. Up to 28 conditions per place. [2023-08-27 03:25:19,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 807 places, 859 transitions, 1939 flow [2023-08-27 03:25:19,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 807 places, 859 transitions, 1939 flow [2023-08-27 03:25:19,148 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:19,148 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 807 places, 859 transitions, 1939 flow [2023-08-27 03:25:19,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 807 places, 859 transitions, 1939 flow [2023-08-27 03:25:19,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 807 places, 859 transitions, 1939 flow [2023-08-27 03:25:19,462 INFO L124 PetriNetUnfolderBase]: 92/1013 cut-off events. [2023-08-27 03:25:19,462 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-08-27 03:25:19,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 1013 events. 92/1013 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4841 event pairs, 0 based on Foata normal form. 0/764 useless extension candidates. Maximal degree in co-relation 1040. Up to 28 conditions per place. [2023-08-27 03:25:19,587 INFO L119 LiptonReduction]: Number of co-enabled transitions 650286 [2023-08-27 03:25:25,904 INFO L134 LiptonReduction]: Checked pairs total: 2107848 [2023-08-27 03:25:25,904 INFO L136 LiptonReduction]: Total number of compositions: 664 [2023-08-27 03:25:25,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:25,906 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:25,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:25,969 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:25,969 INFO L124 PetriNetUnfolderBase]: 28/438 cut-off events. [2023-08-27 03:25:25,970 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-08-27 03:25:25,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:25,970 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:25,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:25,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:25,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1502513331, now seen corresponding path program 1 times [2023-08-27 03:25:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:25,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562683225] [2023-08-27 03:25:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:25,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:25,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:26,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:26,010 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:26,010 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:26,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 03:25:26,010 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:26,011 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:26,011 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:26,011 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-27 03:25:26,102 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:26,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 867 places, 923 transitions, 2098 flow [2023-08-27 03:25:26,429 INFO L124 PetriNetUnfolderBase]: 99/1089 cut-off events. [2023-08-27 03:25:26,429 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-27 03:25:26,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 1089 events. 99/1089 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5268 event pairs, 0 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 1132. Up to 30 conditions per place. [2023-08-27 03:25:26,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 867 places, 923 transitions, 2098 flow [2023-08-27 03:25:26,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 867 places, 923 transitions, 2098 flow [2023-08-27 03:25:26,468 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:26,468 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 867 places, 923 transitions, 2098 flow [2023-08-27 03:25:26,468 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 867 places, 923 transitions, 2098 flow [2023-08-27 03:25:26,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 867 places, 923 transitions, 2098 flow [2023-08-27 03:25:26,831 INFO L124 PetriNetUnfolderBase]: 99/1089 cut-off events. [2023-08-27 03:25:26,831 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-27 03:25:26,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 1089 events. 99/1089 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5268 event pairs, 0 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 1132. Up to 30 conditions per place. [2023-08-27 03:25:27,004 INFO L119 LiptonReduction]: Number of co-enabled transitions 756756 [2023-08-27 03:25:33,876 INFO L134 LiptonReduction]: Checked pairs total: 2414023 [2023-08-27 03:25:33,876 INFO L136 LiptonReduction]: Total number of compositions: 719 [2023-08-27 03:25:33,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:33,878 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:33,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:33,941 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:33,942 INFO L124 PetriNetUnfolderBase]: 29/463 cut-off events. [2023-08-27 03:25:33,942 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-27 03:25:33,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:33,942 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:33,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:33,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:33,942 INFO L85 PathProgramCache]: Analyzing trace with hash 156458782, now seen corresponding path program 1 times [2023-08-27 03:25:33,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:33,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537187686] [2023-08-27 03:25:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:33,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:33,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:33,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:33,985 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:33,985 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 03:25:33,986 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:33,986 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:33,986 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:33,986 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-27 03:25:34,074 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:34,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 927 places, 987 transitions, 2259 flow [2023-08-27 03:25:34,596 INFO L124 PetriNetUnfolderBase]: 106/1165 cut-off events. [2023-08-27 03:25:34,596 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2023-08-27 03:25:34,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 1165 events. 106/1165 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5648 event pairs, 0 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 1225. Up to 32 conditions per place. [2023-08-27 03:25:34,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 927 places, 987 transitions, 2259 flow [2023-08-27 03:25:34,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 927 places, 987 transitions, 2259 flow [2023-08-27 03:25:34,634 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:34,634 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 927 places, 987 transitions, 2259 flow [2023-08-27 03:25:34,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 927 places, 987 transitions, 2259 flow [2023-08-27 03:25:34,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 927 places, 987 transitions, 2259 flow [2023-08-27 03:25:35,084 INFO L124 PetriNetUnfolderBase]: 106/1165 cut-off events. [2023-08-27 03:25:35,085 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2023-08-27 03:25:35,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 1165 events. 106/1165 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5648 event pairs, 0 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 1225. Up to 32 conditions per place. [2023-08-27 03:25:35,249 INFO L119 LiptonReduction]: Number of co-enabled transitions 871290 [2023-08-27 03:25:42,554 INFO L134 LiptonReduction]: Checked pairs total: 2828589 [2023-08-27 03:25:42,555 INFO L136 LiptonReduction]: Total number of compositions: 771 [2023-08-27 03:25:42,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:42,556 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:42,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:42,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:42,628 INFO L124 PetriNetUnfolderBase]: 32/501 cut-off events. [2023-08-27 03:25:42,628 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2023-08-27 03:25:42,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:42,628 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:42,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:42,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:42,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1937970256, now seen corresponding path program 1 times [2023-08-27 03:25:42,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:42,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278463612] [2023-08-27 03:25:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:42,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:42,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:42,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:42,671 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:42,671 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:42,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 03:25:42,672 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:42,672 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:42,672 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:42,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-27 03:25:42,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:42,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 987 places, 1051 transitions, 2422 flow [2023-08-27 03:25:43,161 INFO L124 PetriNetUnfolderBase]: 113/1241 cut-off events. [2023-08-27 03:25:43,162 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-27 03:25:43,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 1241 events. 113/1241 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6045 event pairs, 0 based on Foata normal form. 0/935 useless extension candidates. Maximal degree in co-relation 1319. Up to 34 conditions per place. [2023-08-27 03:25:43,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 987 places, 1051 transitions, 2422 flow [2023-08-27 03:25:43,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 987 places, 1051 transitions, 2422 flow [2023-08-27 03:25:43,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:43,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 987 places, 1051 transitions, 2422 flow [2023-08-27 03:25:43,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 987 places, 1051 transitions, 2422 flow [2023-08-27 03:25:43,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 987 places, 1051 transitions, 2422 flow [2023-08-27 03:25:43,602 INFO L124 PetriNetUnfolderBase]: 113/1241 cut-off events. [2023-08-27 03:25:43,602 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-27 03:25:43,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 1241 events. 113/1241 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6045 event pairs, 0 based on Foata normal form. 0/935 useless extension candidates. Maximal degree in co-relation 1319. Up to 34 conditions per place. [2023-08-27 03:25:43,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 993888 [2023-08-27 03:25:51,442 INFO L134 LiptonReduction]: Checked pairs total: 3196855 [2023-08-27 03:25:51,443 INFO L136 LiptonReduction]: Total number of compositions: 829 [2023-08-27 03:25:51,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:51,446 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:51,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:51,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:51,559 INFO L124 PetriNetUnfolderBase]: 32/531 cut-off events. [2023-08-27 03:25:51,559 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-27 03:25:51,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:51,559 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:51,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:51,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:51,559 INFO L85 PathProgramCache]: Analyzing trace with hash 788747720, now seen corresponding path program 1 times [2023-08-27 03:25:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655624407] [2023-08-27 03:25:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:51,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:51,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:51,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:51,619 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:51,619 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:51,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 03:25:51,619 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:51,619 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:51,620 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:51,620 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-08-27 03:25:51,730 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:51,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1047 places, 1115 transitions, 2587 flow [2023-08-27 03:25:52,188 INFO L124 PetriNetUnfolderBase]: 120/1317 cut-off events. [2023-08-27 03:25:52,188 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-08-27 03:25:52,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 1317 events. 120/1317 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6427 event pairs, 0 based on Foata normal form. 0/992 useless extension candidates. Maximal degree in co-relation 1414. Up to 36 conditions per place. [2023-08-27 03:25:52,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 1047 places, 1115 transitions, 2587 flow [2023-08-27 03:25:52,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1047 places, 1115 transitions, 2587 flow [2023-08-27 03:25:52,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:52,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1047 places, 1115 transitions, 2587 flow [2023-08-27 03:25:52,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1047 places, 1115 transitions, 2587 flow [2023-08-27 03:25:52,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1047 places, 1115 transitions, 2587 flow [2023-08-27 03:25:52,640 INFO L124 PetriNetUnfolderBase]: 120/1317 cut-off events. [2023-08-27 03:25:52,641 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-08-27 03:25:52,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 1317 events. 120/1317 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6427 event pairs, 0 based on Foata normal form. 0/992 useless extension candidates. Maximal degree in co-relation 1414. Up to 36 conditions per place. [2023-08-27 03:25:52,964 INFO L119 LiptonReduction]: Number of co-enabled transitions 1124550 [2023-08-27 03:26:01,437 INFO L134 LiptonReduction]: Checked pairs total: 3636073 [2023-08-27 03:26:01,437 INFO L136 LiptonReduction]: Total number of compositions: 868 [2023-08-27 03:26:01,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:26:01,438 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:26:01,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:26:01,526 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:26:01,526 INFO L124 PetriNetUnfolderBase]: 37/572 cut-off events. [2023-08-27 03:26:01,526 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-08-27 03:26:01,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:26:01,526 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:26:01,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:26:01,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:26:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1187929977, now seen corresponding path program 1 times [2023-08-27 03:26:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:26:01,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825617960] [2023-08-27 03:26:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:26:01,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:26:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:01,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:26:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:01,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:26:01,579 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:26:01,579 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:26:01,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 03:26:01,579 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:26:01,580 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:26:01,580 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:26:01,580 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-08-27 03:26:01,678 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:26:01,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1107 places, 1179 transitions, 2754 flow [2023-08-27 03:26:02,272 INFO L124 PetriNetUnfolderBase]: 127/1393 cut-off events. [2023-08-27 03:26:02,272 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2023-08-27 03:26:02,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 1393 events. 127/1393 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6802 event pairs, 0 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 1510. Up to 38 conditions per place. [2023-08-27 03:26:02,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 1107 places, 1179 transitions, 2754 flow [2023-08-27 03:26:02,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1107 places, 1179 transitions, 2754 flow [2023-08-27 03:26:02,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:26:02,327 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1107 places, 1179 transitions, 2754 flow [2023-08-27 03:26:02,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1107 places, 1179 transitions, 2754 flow [2023-08-27 03:26:02,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1107 places, 1179 transitions, 2754 flow [2023-08-27 03:26:02,761 INFO L124 PetriNetUnfolderBase]: 127/1393 cut-off events. [2023-08-27 03:26:02,761 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2023-08-27 03:26:02,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 1393 events. 127/1393 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 6802 event pairs, 0 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 1510. Up to 38 conditions per place. [2023-08-27 03:26:03,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 1263276 [2023-08-27 03:26:12,043 INFO L134 LiptonReduction]: Checked pairs total: 4111102 [2023-08-27 03:26:12,043 INFO L136 LiptonReduction]: Total number of compositions: 924 [2023-08-27 03:26:12,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:26:12,045 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:26:12,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:26:12,145 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:26:12,145 INFO L124 PetriNetUnfolderBase]: 41/611 cut-off events. [2023-08-27 03:26:12,145 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2023-08-27 03:26:12,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:26:12,146 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:26:12,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:26:12,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:26:12,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1176683851, now seen corresponding path program 1 times [2023-08-27 03:26:12,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:26:12,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715218152] [2023-08-27 03:26:12,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:26:12,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:26:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:12,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:26:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:12,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:26:12,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:26:12,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:26:12,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 03:26:12,201 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:26:12,202 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:26:12,202 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:26:12,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-08-27 03:26:12,343 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:26:12,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1167 places, 1243 transitions, 2923 flow [2023-08-27 03:26:12,945 INFO L124 PetriNetUnfolderBase]: 134/1469 cut-off events. [2023-08-27 03:26:12,945 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-08-27 03:26:12,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1717 conditions, 1469 events. 134/1469 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 7250 event pairs, 0 based on Foata normal form. 0/1106 useless extension candidates. Maximal degree in co-relation 1607. Up to 40 conditions per place. [2023-08-27 03:26:12,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 1167 places, 1243 transitions, 2923 flow [2023-08-27 03:26:13,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1167 places, 1243 transitions, 2923 flow [2023-08-27 03:26:13,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:26:13,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1167 places, 1243 transitions, 2923 flow [2023-08-27 03:26:13,000 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1167 places, 1243 transitions, 2923 flow [2023-08-27 03:26:13,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1167 places, 1243 transitions, 2923 flow [2023-08-27 03:26:13,491 INFO L124 PetriNetUnfolderBase]: 134/1469 cut-off events. [2023-08-27 03:26:13,492 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-08-27 03:26:13,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1717 conditions, 1469 events. 134/1469 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 7250 event pairs, 0 based on Foata normal form. 0/1106 useless extension candidates. Maximal degree in co-relation 1607. Up to 40 conditions per place. [2023-08-27 03:26:13,780 INFO L119 LiptonReduction]: Number of co-enabled transitions 1410066 [2023-08-27 03:26:23,472 INFO L134 LiptonReduction]: Checked pairs total: 4509868 [2023-08-27 03:26:23,473 INFO L136 LiptonReduction]: Total number of compositions: 967 [2023-08-27 03:26:23,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:26:23,475 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:26:23,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:26:23,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:26:23,629 INFO L124 PetriNetUnfolderBase]: 38/636 cut-off events. [2023-08-27 03:26:23,630 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-08-27 03:26:23,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:26:23,630 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:26:23,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:26:23,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:26:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash -963768248, now seen corresponding path program 1 times [2023-08-27 03:26:23,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:26:23,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204430149] [2023-08-27 03:26:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:26:23,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:26:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:23,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:26:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:23,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:26:23,698 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:26:23,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:26:23,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 03:26:23,698 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:26:23,698 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:26:23,699 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:26:23,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-08-27 03:26:23,805 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:26:23,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1227 places, 1307 transitions, 3094 flow [2023-08-27 03:26:24,357 INFO L124 PetriNetUnfolderBase]: 141/1545 cut-off events. [2023-08-27 03:26:24,357 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-27 03:26:24,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1816 conditions, 1545 events. 141/1545 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7616 event pairs, 0 based on Foata normal form. 0/1163 useless extension candidates. Maximal degree in co-relation 1705. Up to 42 conditions per place. [2023-08-27 03:26:24,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 1227 places, 1307 transitions, 3094 flow [2023-08-27 03:26:24,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1227 places, 1307 transitions, 3094 flow [2023-08-27 03:26:24,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:26:24,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1227 places, 1307 transitions, 3094 flow [2023-08-27 03:26:24,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1227 places, 1307 transitions, 3094 flow [2023-08-27 03:26:24,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1227 places, 1307 transitions, 3094 flow [2023-08-27 03:26:25,017 INFO L124 PetriNetUnfolderBase]: 141/1545 cut-off events. [2023-08-27 03:26:25,017 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-27 03:26:25,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1816 conditions, 1545 events. 141/1545 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7616 event pairs, 0 based on Foata normal form. 0/1163 useless extension candidates. Maximal degree in co-relation 1705. Up to 42 conditions per place. [2023-08-27 03:26:25,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 1564920 [2023-08-27 03:26:35,512 INFO L134 LiptonReduction]: Checked pairs total: 4952405 [2023-08-27 03:26:35,512 INFO L136 LiptonReduction]: Total number of compositions: 996 [2023-08-27 03:26:35,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:26:35,514 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:26:35,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:26:35,655 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:26:35,655 INFO L124 PetriNetUnfolderBase]: 38/667 cut-off events. [2023-08-27 03:26:35,655 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-27 03:26:35,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:26:35,656 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:26:35,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:26:35,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:26:35,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1299034467, now seen corresponding path program 1 times [2023-08-27 03:26:35,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:26:35,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155652186] [2023-08-27 03:26:35,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:26:35,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:26:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:35,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:26:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:35,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:26:35,745 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:26:35,745 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:26:35,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 03:26:35,745 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:26:35,746 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:26:35,746 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:26:35,746 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-08-27 03:26:35,859 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:26:35,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1287 places, 1371 transitions, 3267 flow [2023-08-27 03:26:36,549 INFO L124 PetriNetUnfolderBase]: 148/1621 cut-off events. [2023-08-27 03:26:36,549 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2023-08-27 03:26:36,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1916 conditions, 1621 events. 148/1621 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 8057 event pairs, 0 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 1804. Up to 44 conditions per place. [2023-08-27 03:26:36,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 1287 places, 1371 transitions, 3267 flow [2023-08-27 03:26:36,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1287 places, 1371 transitions, 3267 flow [2023-08-27 03:26:36,640 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:26:36,640 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1287 places, 1371 transitions, 3267 flow [2023-08-27 03:26:36,640 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1287 places, 1371 transitions, 3267 flow [2023-08-27 03:26:36,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1287 places, 1371 transitions, 3267 flow [2023-08-27 03:26:37,328 INFO L124 PetriNetUnfolderBase]: 148/1621 cut-off events. [2023-08-27 03:26:37,328 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2023-08-27 03:26:37,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1916 conditions, 1621 events. 148/1621 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 8057 event pairs, 0 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 1804. Up to 44 conditions per place. [2023-08-27 03:26:37,623 INFO L119 LiptonReduction]: Number of co-enabled transitions 1727838 [2023-08-27 03:26:49,056 INFO L134 LiptonReduction]: Checked pairs total: 5539770 [2023-08-27 03:26:49,056 INFO L136 LiptonReduction]: Total number of compositions: 1074 [2023-08-27 03:26:49,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:26:49,058 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:26:49,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:26:49,187 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:26:49,187 INFO L124 PetriNetUnfolderBase]: 44/710 cut-off events. [2023-08-27 03:26:49,187 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2023-08-27 03:26:49,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:26:49,188 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:26:49,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:26:49,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:26:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2029694562, now seen corresponding path program 1 times [2023-08-27 03:26:49,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:26:49,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698611345] [2023-08-27 03:26:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:26:49,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:26:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:49,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:26:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:49,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:26:49,248 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:26:49,248 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:26:49,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 03:26:49,248 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:26:49,249 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:26:49,249 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:26:49,249 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-08-27 03:26:49,375 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:26:49,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1347 places, 1435 transitions, 3442 flow [2023-08-27 03:26:50,042 INFO L124 PetriNetUnfolderBase]: 155/1697 cut-off events. [2023-08-27 03:26:50,043 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2023-08-27 03:26:50,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 1697 events. 155/1697 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8435 event pairs, 0 based on Foata normal form. 0/1277 useless extension candidates. Maximal degree in co-relation 1904. Up to 46 conditions per place. [2023-08-27 03:26:50,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 1347 places, 1435 transitions, 3442 flow [2023-08-27 03:26:50,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1347 places, 1435 transitions, 3442 flow [2023-08-27 03:26:50,149 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:26:50,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1347 places, 1435 transitions, 3442 flow [2023-08-27 03:26:50,149 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1347 places, 1435 transitions, 3442 flow [2023-08-27 03:26:50,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1347 places, 1435 transitions, 3442 flow [2023-08-27 03:26:50,871 INFO L124 PetriNetUnfolderBase]: 155/1697 cut-off events. [2023-08-27 03:26:50,872 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2023-08-27 03:26:50,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 1697 events. 155/1697 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8435 event pairs, 0 based on Foata normal form. 0/1277 useless extension candidates. Maximal degree in co-relation 1904. Up to 46 conditions per place. [2023-08-27 03:26:51,203 INFO L119 LiptonReduction]: Number of co-enabled transitions 1898820 [2023-08-27 03:27:03,012 INFO L134 LiptonReduction]: Checked pairs total: 6176292 [2023-08-27 03:27:03,012 INFO L136 LiptonReduction]: Total number of compositions: 1128 [2023-08-27 03:27:03,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:27:03,014 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:27:03,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:27:03,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:27:03,199 INFO L124 PetriNetUnfolderBase]: 48/750 cut-off events. [2023-08-27 03:27:03,199 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2023-08-27 03:27:03,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:27:03,200 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:27:03,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:27:03,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:27:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1662629954, now seen corresponding path program 1 times [2023-08-27 03:27:03,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:27:03,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526074445] [2023-08-27 03:27:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:27:03,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:27:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:03,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:27:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:03,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:27:03,272 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:27:03,273 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:27:03,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 03:27:03,273 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:27:03,273 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:27:03,273 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:27:03,273 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-08-27 03:27:03,397 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:27:03,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1407 places, 1499 transitions, 3619 flow [2023-08-27 03:27:04,132 INFO L124 PetriNetUnfolderBase]: 162/1773 cut-off events. [2023-08-27 03:27:04,132 INFO L125 PetriNetUnfolderBase]: For 2277/2277 co-relation queries the response was YES. [2023-08-27 03:27:04,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 1773 events. 162/1773 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8816 event pairs, 0 based on Foata normal form. 0/1334 useless extension candidates. Maximal degree in co-relation 2005. Up to 48 conditions per place. [2023-08-27 03:27:04,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 1407 places, 1499 transitions, 3619 flow [2023-08-27 03:27:04,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1407 places, 1499 transitions, 3619 flow [2023-08-27 03:27:04,249 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:27:04,249 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1407 places, 1499 transitions, 3619 flow [2023-08-27 03:27:04,249 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1407 places, 1499 transitions, 3619 flow [2023-08-27 03:27:04,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1407 places, 1499 transitions, 3619 flow [2023-08-27 03:27:05,071 INFO L124 PetriNetUnfolderBase]: 162/1773 cut-off events. [2023-08-27 03:27:05,071 INFO L125 PetriNetUnfolderBase]: For 2277/2277 co-relation queries the response was YES. [2023-08-27 03:27:05,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 1773 events. 162/1773 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8816 event pairs, 0 based on Foata normal form. 0/1334 useless extension candidates. Maximal degree in co-relation 2005. Up to 48 conditions per place. [2023-08-27 03:27:05,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 2077866 [2023-08-27 03:27:18,100 INFO L134 LiptonReduction]: Checked pairs total: 6600581 [2023-08-27 03:27:18,100 INFO L136 LiptonReduction]: Total number of compositions: 1158 [2023-08-27 03:27:18,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:27:18,102 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:27:18,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:27:18,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:27:18,320 INFO L124 PetriNetUnfolderBase]: 48/781 cut-off events. [2023-08-27 03:27:18,320 INFO L125 PetriNetUnfolderBase]: For 2277/2277 co-relation queries the response was YES. [2023-08-27 03:27:18,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:27:18,320 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:27:18,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:27:18,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:27:18,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1527883516, now seen corresponding path program 1 times [2023-08-27 03:27:18,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:27:18,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467379729] [2023-08-27 03:27:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:27:18,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:27:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:18,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:27:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:18,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:27:18,391 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:27:18,391 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:27:18,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 03:27:18,392 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:27:18,392 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:27:18,392 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:27:18,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-08-27 03:27:18,520 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:27:18,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1467 places, 1563 transitions, 3798 flow [2023-08-27 03:27:19,349 INFO L124 PetriNetUnfolderBase]: 169/1849 cut-off events. [2023-08-27 03:27:19,349 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2023-08-27 03:27:19,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2222 conditions, 1849 events. 169/1849 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 9193 event pairs, 0 based on Foata normal form. 0/1391 useless extension candidates. Maximal degree in co-relation 2107. Up to 50 conditions per place. [2023-08-27 03:27:19,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 1467 places, 1563 transitions, 3798 flow [2023-08-27 03:27:19,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1467 places, 1563 transitions, 3798 flow [2023-08-27 03:27:19,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:27:19,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1467 places, 1563 transitions, 3798 flow [2023-08-27 03:27:19,479 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1467 places, 1563 transitions, 3798 flow [2023-08-27 03:27:19,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1467 places, 1563 transitions, 3798 flow [2023-08-27 03:27:20,447 INFO L124 PetriNetUnfolderBase]: 169/1849 cut-off events. [2023-08-27 03:27:20,447 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2023-08-27 03:27:20,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2222 conditions, 1849 events. 169/1849 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 9193 event pairs, 0 based on Foata normal form. 0/1391 useless extension candidates. Maximal degree in co-relation 2107. Up to 50 conditions per place. [2023-08-27 03:27:20,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 2264976 [2023-08-27 03:27:34,122 INFO L134 LiptonReduction]: Checked pairs total: 7427775 [2023-08-27 03:27:34,122 INFO L136 LiptonReduction]: Total number of compositions: 1236 [2023-08-27 03:27:34,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:27:34,126 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:27:34,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:27:34,300 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:27:34,300 INFO L124 PetriNetUnfolderBase]: 54/823 cut-off events. [2023-08-27 03:27:34,300 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2023-08-27 03:27:34,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:27:34,300 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:27:34,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:27:34,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:27:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash 767078715, now seen corresponding path program 1 times [2023-08-27 03:27:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:27:34,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481605663] [2023-08-27 03:27:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:27:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:27:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:34,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:27:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:34,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:27:34,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:27:34,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:27:34,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 03:27:34,372 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:27:34,372 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:27:34,372 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:27:34,372 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-08-27 03:27:34,511 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:27:34,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1527 places, 1627 transitions, 3979 flow [2023-08-27 03:27:35,446 INFO L124 PetriNetUnfolderBase]: 176/1925 cut-off events. [2023-08-27 03:27:35,446 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2023-08-27 03:27:35,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1925 events. 176/1925 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 9631 event pairs, 0 based on Foata normal form. 0/1448 useless extension candidates. Maximal degree in co-relation 2210. Up to 52 conditions per place. [2023-08-27 03:27:35,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 1527 places, 1627 transitions, 3979 flow [2023-08-27 03:27:35,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1527 places, 1627 transitions, 3979 flow [2023-08-27 03:27:35,588 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:27:35,588 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1527 places, 1627 transitions, 3979 flow [2023-08-27 03:27:35,589 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1527 places, 1627 transitions, 3979 flow [2023-08-27 03:27:35,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1527 places, 1627 transitions, 3979 flow [2023-08-27 03:27:36,531 INFO L124 PetriNetUnfolderBase]: 176/1925 cut-off events. [2023-08-27 03:27:36,532 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2023-08-27 03:27:36,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1925 events. 176/1925 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 9631 event pairs, 0 based on Foata normal form. 0/1448 useless extension candidates. Maximal degree in co-relation 2210. Up to 52 conditions per place. [2023-08-27 03:27:37,063 INFO L119 LiptonReduction]: Number of co-enabled transitions 2460150 [2023-08-27 03:27:51,103 INFO L134 LiptonReduction]: Checked pairs total: 7915064 [2023-08-27 03:27:51,104 INFO L136 LiptonReduction]: Total number of compositions: 1271 [2023-08-27 03:27:51,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:27:51,106 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:27:51,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:27:51,312 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:27:51,313 INFO L124 PetriNetUnfolderBase]: 51/848 cut-off events. [2023-08-27 03:27:51,313 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2023-08-27 03:27:51,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:27:51,313 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:27:51,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:27:51,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:27:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1206550531, now seen corresponding path program 1 times [2023-08-27 03:27:51,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:27:51,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364134655] [2023-08-27 03:27:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:27:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:27:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:51,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:27:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:51,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:27:51,391 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:27:51,391 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:27:51,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 03:27:51,391 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:27:51,392 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:27:51,392 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:27:51,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-08-27 03:27:51,537 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:27:51,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1587 places, 1691 transitions, 4162 flow [2023-08-27 03:27:52,603 INFO L124 PetriNetUnfolderBase]: 183/2001 cut-off events. [2023-08-27 03:27:52,603 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-08-27 03:27:52,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 2001 events. 183/2001 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 10025 event pairs, 0 based on Foata normal form. 0/1505 useless extension candidates. Maximal degree in co-relation 2314. Up to 54 conditions per place. [2023-08-27 03:27:52,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 1587 places, 1691 transitions, 4162 flow [2023-08-27 03:27:52,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1587 places, 1691 transitions, 4162 flow [2023-08-27 03:27:52,756 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:27:52,756 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1587 places, 1691 transitions, 4162 flow [2023-08-27 03:27:52,756 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1587 places, 1691 transitions, 4162 flow [2023-08-27 03:27:52,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1587 places, 1691 transitions, 4162 flow [2023-08-27 03:27:53,812 INFO L124 PetriNetUnfolderBase]: 183/2001 cut-off events. [2023-08-27 03:27:53,812 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-08-27 03:27:53,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 2001 events. 183/2001 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 10025 event pairs, 0 based on Foata normal form. 0/1505 useless extension candidates. Maximal degree in co-relation 2314. Up to 54 conditions per place. [2023-08-27 03:27:54,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 2663388 [2023-08-27 03:28:09,100 INFO L134 LiptonReduction]: Checked pairs total: 8715360 [2023-08-27 03:28:09,100 INFO L136 LiptonReduction]: Total number of compositions: 1343 [2023-08-27 03:28:09,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:28:09,102 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:28:09,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:28:09,325 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:28:09,325 INFO L124 PetriNetUnfolderBase]: 61/899 cut-off events. [2023-08-27 03:28:09,325 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-08-27 03:28:09,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:28:09,326 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:28:09,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:28:09,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:28:09,326 INFO L85 PathProgramCache]: Analyzing trace with hash -677943781, now seen corresponding path program 1 times [2023-08-27 03:28:09,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:28:09,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670931096] [2023-08-27 03:28:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:28:09,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:28:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:09,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:28:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:09,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:28:09,404 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:28:09,405 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:28:09,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 03:28:09,405 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:28:09,405 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:28:09,405 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:28:09,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-08-27 03:28:09,583 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:28:09,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1647 places, 1755 transitions, 4347 flow [2023-08-27 03:28:10,769 INFO L124 PetriNetUnfolderBase]: 190/2077 cut-off events. [2023-08-27 03:28:10,769 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-27 03:28:10,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2537 conditions, 2077 events. 190/2077 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 10251 event pairs, 0 based on Foata normal form. 0/1562 useless extension candidates. Maximal degree in co-relation 2419. Up to 56 conditions per place. [2023-08-27 03:28:10,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 1647 places, 1755 transitions, 4347 flow [2023-08-27 03:28:10,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1647 places, 1755 transitions, 4347 flow [2023-08-27 03:28:10,933 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:28:10,933 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1647 places, 1755 transitions, 4347 flow [2023-08-27 03:28:10,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1647 places, 1755 transitions, 4347 flow [2023-08-27 03:28:10,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1647 places, 1755 transitions, 4347 flow [2023-08-27 03:28:12,073 INFO L124 PetriNetUnfolderBase]: 190/2077 cut-off events. [2023-08-27 03:28:12,073 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-27 03:28:12,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2537 conditions, 2077 events. 190/2077 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 10251 event pairs, 0 based on Foata normal form. 0/1562 useless extension candidates. Maximal degree in co-relation 2419. Up to 56 conditions per place. [2023-08-27 03:28:12,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 2874690 [2023-08-27 03:28:28,408 INFO L134 LiptonReduction]: Checked pairs total: 9376795 [2023-08-27 03:28:28,408 INFO L136 LiptonReduction]: Total number of compositions: 1381 [2023-08-27 03:28:28,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:28:28,410 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:28:28,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:28:28,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:28:28,645 INFO L124 PetriNetUnfolderBase]: 57/932 cut-off events. [2023-08-27 03:28:28,645 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-27 03:28:28,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:28:28,646 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:28:28,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:28:28,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:28:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash -715883618, now seen corresponding path program 1 times [2023-08-27 03:28:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:28:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689154878] [2023-08-27 03:28:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:28:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:28:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:28,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:28:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:28,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:28:28,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:28:28,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:28:28,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 03:28:28,727 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:28:28,727 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:28:28,727 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:28:28,727 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-08-27 03:28:28,885 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:28:28,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1707 places, 1819 transitions, 4534 flow [2023-08-27 03:28:30,306 INFO L124 PetriNetUnfolderBase]: 197/2153 cut-off events. [2023-08-27 03:28:30,306 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-27 03:28:30,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 2153 events. 197/2153 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 10594 event pairs, 0 based on Foata normal form. 0/1619 useless extension candidates. Maximal degree in co-relation 2525. Up to 58 conditions per place. [2023-08-27 03:28:30,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 1707 places, 1819 transitions, 4534 flow [2023-08-27 03:28:30,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1707 places, 1819 transitions, 4534 flow [2023-08-27 03:28:30,634 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:28:30,634 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1707 places, 1819 transitions, 4534 flow [2023-08-27 03:28:30,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1707 places, 1819 transitions, 4534 flow [2023-08-27 03:28:30,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1707 places, 1819 transitions, 4534 flow [2023-08-27 03:28:31,996 INFO L124 PetriNetUnfolderBase]: 197/2153 cut-off events. [2023-08-27 03:28:31,996 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-27 03:28:32,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 2153 events. 197/2153 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 10594 event pairs, 0 based on Foata normal form. 0/1619 useless extension candidates. Maximal degree in co-relation 2525. Up to 58 conditions per place. [2023-08-27 03:28:32,658 INFO L119 LiptonReduction]: Number of co-enabled transitions 3094056 [2023-08-27 03:28:49,199 INFO L134 LiptonReduction]: Checked pairs total: 10105618 [2023-08-27 03:28:49,199 INFO L136 LiptonReduction]: Total number of compositions: 1438 [2023-08-27 03:28:49,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:28:49,201 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:28:49,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:28:49,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:28:49,535 INFO L124 PetriNetUnfolderBase]: 63/967 cut-off events. [2023-08-27 03:28:49,536 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-27 03:28:49,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:28:49,536 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:28:49,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:28:49,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:28:49,536 INFO L85 PathProgramCache]: Analyzing trace with hash 650794909, now seen corresponding path program 1 times [2023-08-27 03:28:49,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:28:49,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211857451] [2023-08-27 03:28:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:28:49,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:28:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:49,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:28:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:49,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:28:49,618 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:28:49,618 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:28:49,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 03:28:49,619 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:28:49,619 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:28:49,619 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:28:49,619 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-08-27 03:28:49,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:28:49,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1767 places, 1883 transitions, 4723 flow [2023-08-27 03:28:51,346 INFO L124 PetriNetUnfolderBase]: 204/2229 cut-off events. [2023-08-27 03:28:51,347 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-08-27 03:28:51,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 2229 events. 204/2229 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 10999 event pairs, 0 based on Foata normal form. 0/1676 useless extension candidates. Maximal degree in co-relation 2632. Up to 60 conditions per place. [2023-08-27 03:28:51,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 1767 places, 1883 transitions, 4723 flow [2023-08-27 03:28:51,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1767 places, 1883 transitions, 4723 flow [2023-08-27 03:28:51,495 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:28:51,495 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1767 places, 1883 transitions, 4723 flow [2023-08-27 03:28:51,495 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1767 places, 1883 transitions, 4723 flow [2023-08-27 03:28:51,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1767 places, 1883 transitions, 4723 flow [2023-08-27 03:28:53,094 INFO L124 PetriNetUnfolderBase]: 204/2229 cut-off events. [2023-08-27 03:28:53,094 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-08-27 03:28:53,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 2229 events. 204/2229 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 10999 event pairs, 0 based on Foata normal form. 0/1676 useless extension candidates. Maximal degree in co-relation 2632. Up to 60 conditions per place. [2023-08-27 03:28:53,700 INFO L119 LiptonReduction]: Number of co-enabled transitions 3321486 [2023-08-27 03:29:11,413 INFO L134 LiptonReduction]: Checked pairs total: 10676040 [2023-08-27 03:29:11,413 INFO L136 LiptonReduction]: Total number of compositions: 1481 [2023-08-27 03:29:11,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:29:11,415 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:29:11,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:29:11,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:29:11,693 INFO L124 PetriNetUnfolderBase]: 64/1008 cut-off events. [2023-08-27 03:29:11,693 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-08-27 03:29:11,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:29:11,693 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:29:11,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:29:11,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:29:11,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2027708599, now seen corresponding path program 1 times [2023-08-27 03:29:11,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:29:11,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666523575] [2023-08-27 03:29:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:29:11,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:29:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:11,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:29:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:11,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:29:11,787 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:29:11,787 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:29:11,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 03:29:11,788 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:29:11,788 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:29:11,788 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:29:11,788 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-08-27 03:29:11,933 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:29:11,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1827 places, 1947 transitions, 4914 flow [2023-08-27 03:29:13,714 INFO L124 PetriNetUnfolderBase]: 211/2305 cut-off events. [2023-08-27 03:29:13,714 INFO L125 PetriNetUnfolderBase]: For 4930/4930 co-relation queries the response was YES. [2023-08-27 03:29:13,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 2305 events. 211/2305 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 11329 event pairs, 0 based on Foata normal form. 0/1733 useless extension candidates. Maximal degree in co-relation 2740. Up to 62 conditions per place. [2023-08-27 03:29:13,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 1827 places, 1947 transitions, 4914 flow [2023-08-27 03:29:13,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1827 places, 1947 transitions, 4914 flow [2023-08-27 03:29:13,884 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:29:13,884 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1827 places, 1947 transitions, 4914 flow [2023-08-27 03:29:13,884 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1827 places, 1947 transitions, 4914 flow [2023-08-27 03:29:13,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1827 places, 1947 transitions, 4914 flow [2023-08-27 03:29:15,545 INFO L124 PetriNetUnfolderBase]: 211/2305 cut-off events. [2023-08-27 03:29:15,545 INFO L125 PetriNetUnfolderBase]: For 4930/4930 co-relation queries the response was YES. [2023-08-27 03:29:15,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 2305 events. 211/2305 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 11329 event pairs, 0 based on Foata normal form. 0/1733 useless extension candidates. Maximal degree in co-relation 2740. Up to 62 conditions per place. [2023-08-27 03:29:16,319 INFO L119 LiptonReduction]: Number of co-enabled transitions 3556980 [2023-08-27 03:29:34,143 INFO L134 LiptonReduction]: Checked pairs total: 11512174 [2023-08-27 03:29:34,144 INFO L136 LiptonReduction]: Total number of compositions: 1508 [2023-08-27 03:29:34,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:29:34,146 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:29:34,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:29:34,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:29:34,492 INFO L124 PetriNetUnfolderBase]: 65/1040 cut-off events. [2023-08-27 03:29:34,492 INFO L125 PetriNetUnfolderBase]: For 4930/4930 co-relation queries the response was YES. [2023-08-27 03:29:34,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:29:34,493 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:29:34,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:29:34,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:29:34,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1042977980, now seen corresponding path program 1 times [2023-08-27 03:29:34,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:29:34,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459960186] [2023-08-27 03:29:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:29:34,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:29:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:34,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:29:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:34,584 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:29:34,585 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:29:34,585 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:29:34,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 03:29:34,585 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:29:34,585 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:29:34,585 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:29:34,585 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-08-27 03:29:34,753 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:29:34,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1887 places, 2011 transitions, 5107 flow [2023-08-27 03:29:36,455 INFO L124 PetriNetUnfolderBase]: 218/2381 cut-off events. [2023-08-27 03:29:36,456 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2023-08-27 03:29:36,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2971 conditions, 2381 events. 218/2381 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 11726 event pairs, 0 based on Foata normal form. 0/1790 useless extension candidates. Maximal degree in co-relation 2849. Up to 64 conditions per place. [2023-08-27 03:29:36,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 1887 places, 2011 transitions, 5107 flow [2023-08-27 03:29:36,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1887 places, 2011 transitions, 5107 flow [2023-08-27 03:29:36,639 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:29:36,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1887 places, 2011 transitions, 5107 flow [2023-08-27 03:29:36,640 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1887 places, 2011 transitions, 5107 flow [2023-08-27 03:29:36,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1887 places, 2011 transitions, 5107 flow [2023-08-27 03:29:38,466 INFO L124 PetriNetUnfolderBase]: 218/2381 cut-off events. [2023-08-27 03:29:38,467 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2023-08-27 03:29:38,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2971 conditions, 2381 events. 218/2381 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 11726 event pairs, 0 based on Foata normal form. 0/1790 useless extension candidates. Maximal degree in co-relation 2849. Up to 64 conditions per place. [2023-08-27 03:29:39,153 INFO L119 LiptonReduction]: Number of co-enabled transitions 3800538 [2023-08-27 03:29:58,305 INFO L134 LiptonReduction]: Checked pairs total: 12170587 [2023-08-27 03:29:58,305 INFO L136 LiptonReduction]: Total number of compositions: 1576 [2023-08-27 03:29:58,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:29:58,307 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:29:58,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:29:58,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:29:58,691 INFO L124 PetriNetUnfolderBase]: 68/1070 cut-off events. [2023-08-27 03:29:58,691 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2023-08-27 03:29:58,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:29:58,691 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:29:58,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:29:58,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:29:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 344710352, now seen corresponding path program 1 times [2023-08-27 03:29:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:29:58,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781647903] [2023-08-27 03:29:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:29:58,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:29:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:58,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:29:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:58,782 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:29:58,782 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:29:58,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:29:58,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 03:29:58,783 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:29:58,783 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:29:58,783 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:29:58,783 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-08-27 03:29:59,004 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:29:59,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1947 places, 2075 transitions, 5302 flow [2023-08-27 03:30:00,892 INFO L124 PetriNetUnfolderBase]: 225/2457 cut-off events. [2023-08-27 03:30:00,893 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-08-27 03:30:01,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 2457 events. 225/2457 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 12123 event pairs, 0 based on Foata normal form. 0/1847 useless extension candidates. Maximal degree in co-relation 2959. Up to 66 conditions per place. [2023-08-27 03:30:01,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 1947 places, 2075 transitions, 5302 flow [2023-08-27 03:30:01,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1947 places, 2075 transitions, 5302 flow [2023-08-27 03:30:01,070 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:30:01,070 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1947 places, 2075 transitions, 5302 flow [2023-08-27 03:30:01,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1947 places, 2075 transitions, 5302 flow [2023-08-27 03:30:01,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1947 places, 2075 transitions, 5302 flow [2023-08-27 03:30:02,911 INFO L124 PetriNetUnfolderBase]: 225/2457 cut-off events. [2023-08-27 03:30:02,911 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-08-27 03:30:03,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 2457 events. 225/2457 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 12123 event pairs, 0 based on Foata normal form. 0/1847 useless extension candidates. Maximal degree in co-relation 2959. Up to 66 conditions per place. [2023-08-27 03:30:03,657 INFO L119 LiptonReduction]: Number of co-enabled transitions 4052160 [2023-08-27 03:30:23,338 INFO L134 LiptonReduction]: Checked pairs total: 13074998 [2023-08-27 03:30:23,338 INFO L136 LiptonReduction]: Total number of compositions: 1618 [2023-08-27 03:30:23,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:30:23,340 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:30:23,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:30:23,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:30:23,678 INFO L124 PetriNetUnfolderBase]: 69/1110 cut-off events. [2023-08-27 03:30:23,678 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-08-27 03:30:23,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:30:23,678 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:30:23,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:30:23,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:30:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash 52534816, now seen corresponding path program 1 times [2023-08-27 03:30:23,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:30:23,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559717799] [2023-08-27 03:30:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:30:23,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:30:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:30:23,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:30:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:30:23,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:30:23,774 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:30:23,775 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:30:23,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 03:30:23,775 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:30:23,775 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:30:23,775 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:30:23,775 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-08-27 03:30:23,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:30:23,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2007 places, 2139 transitions, 5499 flow [2023-08-27 03:30:26,061 INFO L124 PetriNetUnfolderBase]: 232/2533 cut-off events. [2023-08-27 03:30:26,061 INFO L125 PetriNetUnfolderBase]: For 6512/6512 co-relation queries the response was YES. [2023-08-27 03:30:26,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3194 conditions, 2533 events. 232/2533 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 12498 event pairs, 0 based on Foata normal form. 0/1904 useless extension candidates. Maximal degree in co-relation 3070. Up to 68 conditions per place. [2023-08-27 03:30:26,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 2007 places, 2139 transitions, 5499 flow [2023-08-27 03:30:26,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2007 places, 2139 transitions, 5499 flow [2023-08-27 03:30:26,243 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:30:26,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2007 places, 2139 transitions, 5499 flow [2023-08-27 03:30:26,243 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2007 places, 2139 transitions, 5499 flow [2023-08-27 03:30:26,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2007 places, 2139 transitions, 5499 flow [2023-08-27 03:30:28,046 INFO L124 PetriNetUnfolderBase]: 232/2533 cut-off events. [2023-08-27 03:30:28,047 INFO L125 PetriNetUnfolderBase]: For 6512/6512 co-relation queries the response was YES. [2023-08-27 03:30:28,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3194 conditions, 2533 events. 232/2533 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 12498 event pairs, 0 based on Foata normal form. 0/1904 useless extension candidates. Maximal degree in co-relation 3070. Up to 68 conditions per place. [2023-08-27 03:30:29,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 4311846 [2023-08-27 03:30:49,065 INFO L134 LiptonReduction]: Checked pairs total: 14009953 [2023-08-27 03:30:49,065 INFO L136 LiptonReduction]: Total number of compositions: 1678 [2023-08-27 03:30:49,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:30:49,068 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:30:49,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:30:49,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:30:49,482 INFO L124 PetriNetUnfolderBase]: 76/1155 cut-off events. [2023-08-27 03:30:49,482 INFO L125 PetriNetUnfolderBase]: For 6512/6512 co-relation queries the response was YES. [2023-08-27 03:30:49,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:30:49,482 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:30:49,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:30:49,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:30:49,483 INFO L85 PathProgramCache]: Analyzing trace with hash -42961392, now seen corresponding path program 1 times [2023-08-27 03:30:49,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:30:49,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421297652] [2023-08-27 03:30:49,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:30:49,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:30:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:30:49,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:30:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:30:49,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:30:49,583 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:30:49,583 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:30:49,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 03:30:49,583 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:30:49,584 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:30:49,584 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:30:49,584 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-08-27 03:30:49,745 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:30:49,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2067 places, 2203 transitions, 5698 flow [2023-08-27 03:30:51,735 INFO L124 PetriNetUnfolderBase]: 239/2609 cut-off events. [2023-08-27 03:30:51,736 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2023-08-27 03:30:51,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3307 conditions, 2609 events. 239/2609 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 12951 event pairs, 0 based on Foata normal form. 0/1961 useless extension candidates. Maximal degree in co-relation 3182. Up to 70 conditions per place. [2023-08-27 03:30:51,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 2067 places, 2203 transitions, 5698 flow [2023-08-27 03:30:51,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2067 places, 2203 transitions, 5698 flow [2023-08-27 03:30:51,941 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:30:51,941 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2067 places, 2203 transitions, 5698 flow [2023-08-27 03:30:51,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2067 places, 2203 transitions, 5698 flow [2023-08-27 03:30:51,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2067 places, 2203 transitions, 5698 flow [2023-08-27 03:30:54,052 INFO L124 PetriNetUnfolderBase]: 239/2609 cut-off events. [2023-08-27 03:30:54,052 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2023-08-27 03:30:54,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3307 conditions, 2609 events. 239/2609 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 12951 event pairs, 0 based on Foata normal form. 0/1961 useless extension candidates. Maximal degree in co-relation 3182. Up to 70 conditions per place. [2023-08-27 03:30:55,171 INFO L119 LiptonReduction]: Number of co-enabled transitions 4579596 [2023-08-27 03:31:15,883 INFO L134 LiptonReduction]: Checked pairs total: 14996987 [2023-08-27 03:31:15,883 INFO L136 LiptonReduction]: Total number of compositions: 1710 [2023-08-27 03:31:15,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:31:15,885 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:31:15,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:31:16,276 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:31:16,276 INFO L124 PetriNetUnfolderBase]: 77/1188 cut-off events. [2023-08-27 03:31:16,276 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2023-08-27 03:31:16,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:31:16,276 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:31:16,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:31:16,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:31:16,277 INFO L85 PathProgramCache]: Analyzing trace with hash 834371113, now seen corresponding path program 1 times [2023-08-27 03:31:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:31:16,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506323308] [2023-08-27 03:31:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:31:16,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:31:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:31:16,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:31:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:31:16,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:31:16,382 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:31:16,382 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:31:16,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 03:31:16,382 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:31:16,382 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:31:16,383 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:31:16,383 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-08-27 03:31:16,648 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:31:16,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2127 places, 2267 transitions, 5899 flow [2023-08-27 03:31:19,023 INFO L124 PetriNetUnfolderBase]: 246/2685 cut-off events. [2023-08-27 03:31:19,023 INFO L125 PetriNetUnfolderBase]: For 7735/7735 co-relation queries the response was YES. [2023-08-27 03:31:19,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3421 conditions, 2685 events. 246/2685 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 13394 event pairs, 0 based on Foata normal form. 0/2018 useless extension candidates. Maximal degree in co-relation 3295. Up to 72 conditions per place. [2023-08-27 03:31:19,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 2127 places, 2267 transitions, 5899 flow [2023-08-27 03:31:19,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2127 places, 2267 transitions, 5899 flow [2023-08-27 03:31:19,229 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:31:19,229 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2127 places, 2267 transitions, 5899 flow [2023-08-27 03:31:19,229 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2127 places, 2267 transitions, 5899 flow [2023-08-27 03:31:19,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2127 places, 2267 transitions, 5899 flow [2023-08-27 03:31:21,390 INFO L124 PetriNetUnfolderBase]: 246/2685 cut-off events. [2023-08-27 03:31:21,390 INFO L125 PetriNetUnfolderBase]: For 7735/7735 co-relation queries the response was YES. [2023-08-27 03:31:21,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3421 conditions, 2685 events. 246/2685 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 13394 event pairs, 0 based on Foata normal form. 0/2018 useless extension candidates. Maximal degree in co-relation 3295. Up to 72 conditions per place. [2023-08-27 03:31:22,510 INFO L119 LiptonReduction]: Number of co-enabled transitions 4855410 [2023-08-27 03:31:44,749 INFO L134 LiptonReduction]: Checked pairs total: 15866286 [2023-08-27 03:31:44,749 INFO L136 LiptonReduction]: Total number of compositions: 1784 [2023-08-27 03:31:44,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:31:44,751 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:31:44,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:31:45,251 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:31:45,251 INFO L124 PetriNetUnfolderBase]: 80/1225 cut-off events. [2023-08-27 03:31:45,251 INFO L125 PetriNetUnfolderBase]: For 7735/7735 co-relation queries the response was YES. [2023-08-27 03:31:45,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:31:45,251 INFO L208 CegarLoopForPetriNet]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:31:45,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:31:45,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:31:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1092736791, now seen corresponding path program 1 times [2023-08-27 03:31:45,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:31:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806078124] [2023-08-27 03:31:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:31:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:31:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:31:45,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:31:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:31:45,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:31:45,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:31:45,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:31:45,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 03:31:45,362 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:31:45,362 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:31:45,362 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:31:45,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-08-27 03:31:45,539 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:31:45,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2187 places, 2331 transitions, 6102 flow [2023-08-27 03:31:47,895 INFO L124 PetriNetUnfolderBase]: 253/2761 cut-off events. [2023-08-27 03:31:47,895 INFO L125 PetriNetUnfolderBase]: For 8400/8400 co-relation queries the response was YES. [2023-08-27 03:31:48,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3536 conditions, 2761 events. 253/2761 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 13717 event pairs, 0 based on Foata normal form. 0/2075 useless extension candidates. Maximal degree in co-relation 3409. Up to 74 conditions per place. [2023-08-27 03:31:48,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 2187 places, 2331 transitions, 6102 flow [2023-08-27 03:31:48,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2187 places, 2331 transitions, 6102 flow [2023-08-27 03:31:48,131 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:31:48,131 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2187 places, 2331 transitions, 6102 flow [2023-08-27 03:31:48,131 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2187 places, 2331 transitions, 6102 flow [2023-08-27 03:31:48,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2187 places, 2331 transitions, 6102 flow [2023-08-27 03:31:50,486 INFO L124 PetriNetUnfolderBase]: 253/2761 cut-off events. [2023-08-27 03:31:50,486 INFO L125 PetriNetUnfolderBase]: For 8400/8400 co-relation queries the response was YES. [2023-08-27 03:31:50,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3536 conditions, 2761 events. 253/2761 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 13717 event pairs, 0 based on Foata normal form. 0/2075 useless extension candidates. Maximal degree in co-relation 3409. Up to 74 conditions per place. [2023-08-27 03:31:51,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 5139288 [2023-08-27 03:32:14,686 INFO L134 LiptonReduction]: Checked pairs total: 16885247 [2023-08-27 03:32:14,687 INFO L136 LiptonReduction]: Total number of compositions: 1828 [2023-08-27 03:32:14,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:32:14,688 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:32:14,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:32:15,265 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:32:15,265 INFO L124 PetriNetUnfolderBase]: 84/1264 cut-off events. [2023-08-27 03:32:15,265 INFO L125 PetriNetUnfolderBase]: For 8400/8400 co-relation queries the response was YES. [2023-08-27 03:32:15,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:32:15,266 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:32:15,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:32:15,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:32:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1141661448, now seen corresponding path program 1 times [2023-08-27 03:32:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:32:15,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640198374] [2023-08-27 03:32:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:32:15,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:32:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:32:15,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:32:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:32:15,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:32:15,383 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:32:15,384 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:32:15,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 03:32:15,384 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:32:15,384 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:32:15,384 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:32:15,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-08-27 03:32:15,646 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:32:15,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2247 places, 2395 transitions, 6307 flow [2023-08-27 03:32:18,105 INFO L124 PetriNetUnfolderBase]: 260/2837 cut-off events. [2023-08-27 03:32:18,106 INFO L125 PetriNetUnfolderBase]: For 9102/9102 co-relation queries the response was YES. [2023-08-27 03:32:18,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 2837 events. 260/2837 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 14082 event pairs, 0 based on Foata normal form. 0/2132 useless extension candidates. Maximal degree in co-relation 3524. Up to 76 conditions per place. [2023-08-27 03:32:18,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 2247 places, 2395 transitions, 6307 flow [2023-08-27 03:32:18,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2247 places, 2395 transitions, 6307 flow [2023-08-27 03:32:18,340 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:32:18,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2247 places, 2395 transitions, 6307 flow [2023-08-27 03:32:18,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2247 places, 2395 transitions, 6307 flow [2023-08-27 03:32:18,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2247 places, 2395 transitions, 6307 flow [2023-08-27 03:32:20,657 INFO L124 PetriNetUnfolderBase]: 260/2837 cut-off events. [2023-08-27 03:32:20,657 INFO L125 PetriNetUnfolderBase]: For 9102/9102 co-relation queries the response was YES. [2023-08-27 03:32:20,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 2837 events. 260/2837 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 14082 event pairs, 0 based on Foata normal form. 0/2132 useless extension candidates. Maximal degree in co-relation 3524. Up to 76 conditions per place. [2023-08-27 03:32:21,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 5431230 [2023-08-27 03:32:46,014 INFO L134 LiptonReduction]: Checked pairs total: 17606966 [2023-08-27 03:32:46,014 INFO L136 LiptonReduction]: Total number of compositions: 1890 [2023-08-27 03:32:46,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:32:46,016 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:32:46,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:32:46,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:32:46,536 INFO L124 PetriNetUnfolderBase]: 79/1285 cut-off events. [2023-08-27 03:32:46,536 INFO L125 PetriNetUnfolderBase]: For 9102/9102 co-relation queries the response was YES. [2023-08-27 03:32:46,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:32:46,536 INFO L208 CegarLoopForPetriNet]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:32:46,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:32:46,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:32:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash 927241758, now seen corresponding path program 1 times [2023-08-27 03:32:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:32:46,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811059678] [2023-08-27 03:32:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:32:46,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:32:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:32:46,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:32:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:32:46,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:32:46,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:32:46,656 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:32:46,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-27 03:32:46,657 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:32:46,657 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:32:46,657 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:32:46,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-08-27 03:32:46,833 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:32:46,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2307 places, 2459 transitions, 6514 flow [2023-08-27 03:32:49,429 INFO L124 PetriNetUnfolderBase]: 267/2913 cut-off events. [2023-08-27 03:32:49,429 INFO L125 PetriNetUnfolderBase]: For 9842/9842 co-relation queries the response was YES. [2023-08-27 03:32:49,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 2913 events. 267/2913 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 14495 event pairs, 0 based on Foata normal form. 0/2189 useless extension candidates. Maximal degree in co-relation 3640. Up to 78 conditions per place. [2023-08-27 03:32:49,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 2307 places, 2459 transitions, 6514 flow [2023-08-27 03:32:49,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2307 places, 2459 transitions, 6514 flow [2023-08-27 03:32:49,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:32:49,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2307 places, 2459 transitions, 6514 flow [2023-08-27 03:32:49,668 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2307 places, 2459 transitions, 6514 flow [2023-08-27 03:32:49,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2307 places, 2459 transitions, 6514 flow [2023-08-27 03:32:52,147 INFO L124 PetriNetUnfolderBase]: 267/2913 cut-off events. [2023-08-27 03:32:52,147 INFO L125 PetriNetUnfolderBase]: For 9842/9842 co-relation queries the response was YES. [2023-08-27 03:32:52,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 2913 events. 267/2913 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 14495 event pairs, 0 based on Foata normal form. 0/2189 useless extension candidates. Maximal degree in co-relation 3640. Up to 78 conditions per place. [2023-08-27 03:32:53,407 INFO L119 LiptonReduction]: Number of co-enabled transitions 5731236 [2023-08-27 03:33:18,335 INFO L134 LiptonReduction]: Checked pairs total: 18564961 [2023-08-27 03:33:18,335 INFO L136 LiptonReduction]: Total number of compositions: 1911 [2023-08-27 03:33:18,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:33:18,336 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:33:18,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:33:18,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:33:18,905 INFO L124 PetriNetUnfolderBase]: 87/1332 cut-off events. [2023-08-27 03:33:18,905 INFO L125 PetriNetUnfolderBase]: For 9842/9842 co-relation queries the response was YES. [2023-08-27 03:33:18,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:33:18,905 INFO L208 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:33:18,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:33:18,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:33:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1597701135, now seen corresponding path program 1 times [2023-08-27 03:33:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:33:18,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79301572] [2023-08-27 03:33:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:33:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:33:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:33:18,960 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:33:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:33:19,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:33:19,023 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:33:19,023 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:33:19,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-27 03:33:19,023 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:33:19,023 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:33:19,023 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:33:19,023 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-08-27 03:33:19,204 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:33:19,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2367 places, 2523 transitions, 6723 flow [2023-08-27 03:33:21,917 INFO L124 PetriNetUnfolderBase]: 274/2989 cut-off events. [2023-08-27 03:33:21,917 INFO L125 PetriNetUnfolderBase]: For 10621/10621 co-relation queries the response was YES. [2023-08-27 03:33:22,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3887 conditions, 2989 events. 274/2989 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 14852 event pairs, 0 based on Foata normal form. 0/2246 useless extension candidates. Maximal degree in co-relation 3757. Up to 80 conditions per place. [2023-08-27 03:33:22,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 2367 places, 2523 transitions, 6723 flow [2023-08-27 03:33:22,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2367 places, 2523 transitions, 6723 flow [2023-08-27 03:33:22,172 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:33:22,172 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2367 places, 2523 transitions, 6723 flow [2023-08-27 03:33:22,173 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2367 places, 2523 transitions, 6723 flow [2023-08-27 03:33:22,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2367 places, 2523 transitions, 6723 flow [2023-08-27 03:33:24,831 INFO L124 PetriNetUnfolderBase]: 274/2989 cut-off events. [2023-08-27 03:33:24,831 INFO L125 PetriNetUnfolderBase]: For 10621/10621 co-relation queries the response was YES. [2023-08-27 03:33:25,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3887 conditions, 2989 events. 274/2989 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 14852 event pairs, 0 based on Foata normal form. 0/2246 useless extension candidates. Maximal degree in co-relation 3757. Up to 80 conditions per place. [2023-08-27 03:33:26,448 INFO L119 LiptonReduction]: Number of co-enabled transitions 6039306 [2023-08-27 03:33:52,341 INFO L134 LiptonReduction]: Checked pairs total: 19522356 [2023-08-27 03:33:52,341 INFO L136 LiptonReduction]: Total number of compositions: 1971 [2023-08-27 03:33:52,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:33:52,343 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:33:52,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:33:52,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:33:52,913 INFO L124 PetriNetUnfolderBase]: 84/1350 cut-off events. [2023-08-27 03:33:52,913 INFO L125 PetriNetUnfolderBase]: For 10621/10621 co-relation queries the response was YES. [2023-08-27 03:33:52,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:33:52,913 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:33:52,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:33:52,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:33:52,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1519105634, now seen corresponding path program 1 times [2023-08-27 03:33:52,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:33:52,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498083703] [2023-08-27 03:33:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:33:52,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:33:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:33:52,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:33:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:33:53,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:33:53,034 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:33:53,034 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:33:53,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 03:33:53,034 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:33:53,034 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:33:53,034 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:33:53,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-08-27 03:33:53,359 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:33:53,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2427 places, 2587 transitions, 6934 flow [2023-08-27 03:33:56,265 INFO L124 PetriNetUnfolderBase]: 281/3065 cut-off events. [2023-08-27 03:33:56,266 INFO L125 PetriNetUnfolderBase]: For 11440/11440 co-relation queries the response was YES. [2023-08-27 03:33:56,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 3065 events. 281/3065 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 15285 event pairs, 0 based on Foata normal form. 0/2303 useless extension candidates. Maximal degree in co-relation 3875. Up to 82 conditions per place. [2023-08-27 03:33:56,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 2427 places, 2587 transitions, 6934 flow [2023-08-27 03:33:56,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2427 places, 2587 transitions, 6934 flow [2023-08-27 03:33:56,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:33:56,531 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2427 places, 2587 transitions, 6934 flow [2023-08-27 03:33:56,531 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2427 places, 2587 transitions, 6934 flow [2023-08-27 03:33:56,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2427 places, 2587 transitions, 6934 flow [2023-08-27 03:33:59,274 INFO L124 PetriNetUnfolderBase]: 281/3065 cut-off events. [2023-08-27 03:33:59,274 INFO L125 PetriNetUnfolderBase]: For 11440/11440 co-relation queries the response was YES. [2023-08-27 03:33:59,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 3065 events. 281/3065 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 15285 event pairs, 0 based on Foata normal form. 0/2303 useless extension candidates. Maximal degree in co-relation 3875. Up to 82 conditions per place. [2023-08-27 03:34:00,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 6355440 [2023-08-27 03:34:27,354 INFO L134 LiptonReduction]: Checked pairs total: 20711782 [2023-08-27 03:34:27,354 INFO L136 LiptonReduction]: Total number of compositions: 2023 [2023-08-27 03:34:27,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:34:27,356 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:34:27,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:34:27,972 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:34:27,972 INFO L124 PetriNetUnfolderBase]: 91/1402 cut-off events. [2023-08-27 03:34:27,972 INFO L125 PetriNetUnfolderBase]: For 11440/11440 co-relation queries the response was YES. [2023-08-27 03:34:27,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:34:27,972 INFO L208 CegarLoopForPetriNet]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:34:27,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:34:27,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:34:27,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1873001250, now seen corresponding path program 1 times [2023-08-27 03:34:27,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:34:27,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805382612] [2023-08-27 03:34:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:34:27,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:34:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:34:28,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:34:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:34:28,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:34:28,109 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:34:28,109 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:34:28,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-27 03:34:28,109 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:34:28,110 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:34:28,110 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:34:28,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-08-27 03:34:28,354 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:34:28,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2487 places, 2651 transitions, 7147 flow [2023-08-27 03:34:31,304 INFO L124 PetriNetUnfolderBase]: 288/3141 cut-off events. [2023-08-27 03:34:31,305 INFO L125 PetriNetUnfolderBase]: For 12300/12300 co-relation queries the response was YES. [2023-08-27 03:34:31,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4126 conditions, 3141 events. 288/3141 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 15602 event pairs, 0 based on Foata normal form. 0/2360 useless extension candidates. Maximal degree in co-relation 3994. Up to 84 conditions per place. [2023-08-27 03:34:31,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 2487 places, 2651 transitions, 7147 flow [2023-08-27 03:34:31,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2487 places, 2651 transitions, 7147 flow [2023-08-27 03:34:31,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:34:31,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2487 places, 2651 transitions, 7147 flow [2023-08-27 03:34:31,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2487 places, 2651 transitions, 7147 flow [2023-08-27 03:34:31,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2487 places, 2651 transitions, 7147 flow [2023-08-27 03:34:34,454 INFO L124 PetriNetUnfolderBase]: 288/3141 cut-off events. [2023-08-27 03:34:34,454 INFO L125 PetriNetUnfolderBase]: For 12300/12300 co-relation queries the response was YES. [2023-08-27 03:34:34,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4126 conditions, 3141 events. 288/3141 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 15602 event pairs, 0 based on Foata normal form. 0/2360 useless extension candidates. Maximal degree in co-relation 3994. Up to 84 conditions per place. [2023-08-27 03:34:35,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 6679638 [2023-08-27 03:35:03,063 INFO L134 LiptonReduction]: Checked pairs total: 21760898 [2023-08-27 03:35:03,063 INFO L136 LiptonReduction]: Total number of compositions: 2076 [2023-08-27 03:35:03,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:35:03,065 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;@45e9c331, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:35:03,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:35:03,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:35:03,702 INFO L124 PetriNetUnfolderBase]: 91/1434 cut-off events. [2023-08-27 03:35:03,702 INFO L125 PetriNetUnfolderBase]: For 12300/12300 co-relation queries the response was YES. [2023-08-27 03:35:03,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:35:03,702 INFO L208 CegarLoopForPetriNet]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:35:03,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:35:03,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:35:03,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1221882774, now seen corresponding path program 1 times [2023-08-27 03:35:03,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:35:03,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681261345] [2023-08-27 03:35:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:35:03,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:35:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:35:03,769 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:35:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:35:03,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:35:03,847 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:35:03,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:35:03,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 03:35:03,848 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:35:03,848 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:35:03,848 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:35:03,848 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-08-27 03:35:04,121 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:35:04,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2547 places, 2715 transitions, 7362 flow [2023-08-27 03:35:07,147 INFO L124 PetriNetUnfolderBase]: 295/3217 cut-off events. [2023-08-27 03:35:07,147 INFO L125 PetriNetUnfolderBase]: For 13202/13202 co-relation queries the response was YES. [2023-08-27 03:35:07,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4247 conditions, 3217 events. 295/3217 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 16024 event pairs, 0 based on Foata normal form. 0/2417 useless extension candidates. Maximal degree in co-relation 4114. Up to 86 conditions per place. [2023-08-27 03:35:07,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 2547 places, 2715 transitions, 7362 flow [2023-08-27 03:35:07,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2547 places, 2715 transitions, 7362 flow [2023-08-27 03:35:07,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:35:07,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2547 places, 2715 transitions, 7362 flow [2023-08-27 03:35:07,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2547 places, 2715 transitions, 7362 flow [2023-08-27 03:35:07,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2547 places, 2715 transitions, 7362 flow [2023-08-27 03:35:10,726 INFO L124 PetriNetUnfolderBase]: 295/3217 cut-off events. [2023-08-27 03:35:10,726 INFO L125 PetriNetUnfolderBase]: For 13202/13202 co-relation queries the response was YES. [2023-08-27 03:35:10,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4247 conditions, 3217 events. 295/3217 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 16024 event pairs, 0 based on Foata normal form. 0/2417 useless extension candidates. Maximal degree in co-relation 4114. Up to 86 conditions per place. [2023-08-27 03:35:12,267 INFO L119 LiptonReduction]: Number of co-enabled transitions 7011900