/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:06:48,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:06:48,502 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 05:06:48,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:06:48,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:06:48,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:06:48,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:06:48,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:06:48,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:06:48,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:06:48,533 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:06:48,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:06:48,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:06:48,534 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:06:48,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:06:48,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:06:48,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:06:48,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:06:48,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:06:48,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:06:48,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:06:48,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:06:48,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:06:48,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:06:48,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:06:48,536 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:06:48,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:06:48,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:06:48,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:06:48,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:06:48,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:06:48,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:06:48,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:06:48,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:06:48,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:06:48,538 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:06:48,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:06:48,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:06:48,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:06:48,803 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:06:48,812 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:06:48,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-27 05:06:49,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:06:50,061 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:06:50,061 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-27 05:06:50,074 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa6e078e/4bcfa8585d664de9b3f4d20e90d9f586/FLAGa7ad97f62 [2023-08-27 05:06:50,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa6e078e/4bcfa8585d664de9b3f4d20e90d9f586 [2023-08-27 05:06:50,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:06:50,090 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:06:50,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:06:50,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:06:50,093 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:06:50,094 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4445fa33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50, skipping insertion in model container [2023-08-27 05:06:50,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,137 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:06:50,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:06:50,419 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:06:50,442 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:06:50,443 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:06:50,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:06:50,484 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:06:50,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50 WrapperNode [2023-08-27 05:06:50,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:06:50,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:06:50,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:06:50,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:06:50,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,538 INFO L138 Inliner]: procedures = 170, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2023-08-27 05:06:50,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:06:50,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:06:50,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:06:50,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:06:50,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:06:50,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:06:50,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:06:50,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:06:50,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (1/1) ... [2023-08-27 05:06:50,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:06:50,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:06:50,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 05:06:50,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 05:06:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:06:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:06:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:06:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:06:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:06:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 05:06:50,650 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 05:06:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:06:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:06:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:06:50,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:06:50,651 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 05:06:50,734 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:06:50,736 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:06:50,910 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:06:50,916 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:06:50,916 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-27 05:06:50,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:06:50 BoogieIcfgContainer [2023-08-27 05:06:50,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:06:50,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:06:50,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:06:50,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:06:50,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:06:50" (1/3) ... [2023-08-27 05:06:50,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbabeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:06:50, skipping insertion in model container [2023-08-27 05:06:50,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:50" (2/3) ... [2023-08-27 05:06:50,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbabeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:06:50, skipping insertion in model container [2023-08-27 05:06:50,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:06:50" (3/3) ... [2023-08-27 05:06:50,923 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2023-08-27 05:06:50,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:06:50,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 05:06:50,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:06:50,973 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 05:06:51,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 282 flow [2023-08-27 05:06:51,061 INFO L124 PetriNetUnfolderBase]: 19/178 cut-off events. [2023-08-27 05:06:51,062 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 05:06:51,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 178 events. 19/178 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 465 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-27 05:06:51,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 137 transitions, 282 flow [2023-08-27 05:06:51,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 128 transitions, 261 flow [2023-08-27 05:06:51,080 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:06:51,085 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 128 transitions, 261 flow [2023-08-27 05:06:51,090 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 128 transitions, 261 flow [2023-08-27 05:06:51,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 128 transitions, 261 flow [2023-08-27 05:06:51,115 INFO L124 PetriNetUnfolderBase]: 18/169 cut-off events. [2023-08-27 05:06:51,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:06:51,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 169 events. 18/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 443 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-27 05:06:51,119 INFO L119 LiptonReduction]: Number of co-enabled transitions 4182 [2023-08-27 05:06:53,857 INFO L134 LiptonReduction]: Checked pairs total: 7138 [2023-08-27 05:06:53,858 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-27 05:06:53,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:06:53,875 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:06:53,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:06:53,878 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:06:53,878 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2023-08-27 05:06:53,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:06:53,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:06:53,879 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:06:53,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:06:53,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:06:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1745512367, now seen corresponding path program 1 times [2023-08-27 05:06:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:06:53,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537149365] [2023-08-27 05:06:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:06:53,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:06:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:54,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:06:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:54,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:06:54,064 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:06:54,065 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:06:54,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:06:54,067 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:06:54,068 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:06:54,069 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:06:54,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:06:54,083 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 05:06:54,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 180 transitions, 378 flow [2023-08-27 05:06:54,117 INFO L124 PetriNetUnfolderBase]: 34/299 cut-off events. [2023-08-27 05:06:54,117 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:06:54,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 299 events. 34/299 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 964 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-08-27 05:06:54,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 180 transitions, 378 flow [2023-08-27 05:06:54,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 180 transitions, 378 flow [2023-08-27 05:06:54,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:06:54,121 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 180 transitions, 378 flow [2023-08-27 05:06:54,121 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 180 transitions, 378 flow [2023-08-27 05:06:54,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 180 transitions, 378 flow [2023-08-27 05:06:54,145 INFO L124 PetriNetUnfolderBase]: 34/299 cut-off events. [2023-08-27 05:06:54,145 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:06:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 299 events. 34/299 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 964 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-08-27 05:06:54,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 13284 [2023-08-27 05:06:57,047 INFO L134 LiptonReduction]: Checked pairs total: 26921 [2023-08-27 05:06:57,048 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-27 05:06:57,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:06:57,051 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:06:57,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:06:57,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:06:57,056 INFO L124 PetriNetUnfolderBase]: 10/61 cut-off events. [2023-08-27 05:06:57,056 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 05:06:57,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:06:57,057 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:06:57,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:06:57,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:06:57,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1370872557, now seen corresponding path program 1 times [2023-08-27 05:06:57,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:06:57,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784386061] [2023-08-27 05:06:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:06:57,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:06:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:57,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:06:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:57,135 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:06:57,135 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:06:57,135 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:06:57,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:06:57,135 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:06:57,136 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:06:57,136 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:06:57,136 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:06:57,193 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 05:06:57,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 476 flow [2023-08-27 05:06:57,253 INFO L124 PetriNetUnfolderBase]: 54/461 cut-off events. [2023-08-27 05:06:57,253 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:06:57,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 461 events. 54/461 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1664 event pairs, 1 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 307. Up to 16 conditions per place. [2023-08-27 05:06:57,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 223 transitions, 476 flow [2023-08-27 05:06:57,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 223 transitions, 476 flow [2023-08-27 05:06:57,259 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:06:57,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 223 transitions, 476 flow [2023-08-27 05:06:57,260 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 223 transitions, 476 flow [2023-08-27 05:06:57,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 476 flow [2023-08-27 05:06:57,296 INFO L124 PetriNetUnfolderBase]: 54/461 cut-off events. [2023-08-27 05:06:57,296 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:06:57,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 461 events. 54/461 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1664 event pairs, 1 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 307. Up to 16 conditions per place. [2023-08-27 05:06:57,312 INFO L119 LiptonReduction]: Number of co-enabled transitions 25338 [2023-08-27 05:07:00,530 INFO L134 LiptonReduction]: Checked pairs total: 63011 [2023-08-27 05:07:00,531 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-08-27 05:07:00,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:00,533 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:00,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:00,539 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:00,539 INFO L124 PetriNetUnfolderBase]: 22/106 cut-off events. [2023-08-27 05:07:00,539 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 05:07:00,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:00,540 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:07:00,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:00,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1496331071, now seen corresponding path program 1 times [2023-08-27 05:07:00,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452841895] [2023-08-27 05:07:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:00,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:00,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:00,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:00,624 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:00,625 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:00,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:07:00,625 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:00,625 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:00,625 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:00,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:07:00,657 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 05:07:00,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 266 transitions, 576 flow [2023-08-27 05:07:00,732 INFO L124 PetriNetUnfolderBase]: 86/707 cut-off events. [2023-08-27 05:07:00,733 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:07:00,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 707 events. 86/707 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2892 event pairs, 6 based on Foata normal form. 0/562 useless extension candidates. Maximal degree in co-relation 481. Up to 32 conditions per place. [2023-08-27 05:07:00,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 266 transitions, 576 flow [2023-08-27 05:07:00,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 266 transitions, 576 flow [2023-08-27 05:07:00,750 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:00,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 266 transitions, 576 flow [2023-08-27 05:07:00,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 266 transitions, 576 flow [2023-08-27 05:07:00,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 266 transitions, 576 flow [2023-08-27 05:07:00,813 INFO L124 PetriNetUnfolderBase]: 86/707 cut-off events. [2023-08-27 05:07:00,814 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:07:00,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 707 events. 86/707 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2892 event pairs, 6 based on Foata normal form. 0/562 useless extension candidates. Maximal degree in co-relation 481. Up to 32 conditions per place. [2023-08-27 05:07:00,836 INFO L119 LiptonReduction]: Number of co-enabled transitions 41000 [2023-08-27 05:07:03,884 INFO L134 LiptonReduction]: Checked pairs total: 95757 [2023-08-27 05:07:03,884 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-27 05:07:03,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:03,890 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:03,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:03,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:03,898 INFO L124 PetriNetUnfolderBase]: 29/153 cut-off events. [2023-08-27 05:07:03,898 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 05:07:03,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:03,898 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:03,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:03,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 544906826, now seen corresponding path program 1 times [2023-08-27 05:07:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:03,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580332973] [2023-08-27 05:07:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:03,922 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:03,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:03,987 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:03,987 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:03,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:07:03,987 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:03,987 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:03,987 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:03,988 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 05:07:04,010 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-27 05:07:04,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 309 transitions, 678 flow [2023-08-27 05:07:04,130 INFO L124 PetriNetUnfolderBase]: 146/1125 cut-off events. [2023-08-27 05:07:04,131 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:07:04,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 1125 events. 146/1125 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5394 event pairs, 23 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 752. Up to 80 conditions per place. [2023-08-27 05:07:04,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 309 transitions, 678 flow [2023-08-27 05:07:04,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 309 transitions, 678 flow [2023-08-27 05:07:04,151 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:04,151 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 309 transitions, 678 flow [2023-08-27 05:07:04,151 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 309 transitions, 678 flow [2023-08-27 05:07:04,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 309 transitions, 678 flow [2023-08-27 05:07:04,276 INFO L124 PetriNetUnfolderBase]: 146/1125 cut-off events. [2023-08-27 05:07:04,276 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:07:04,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 1125 events. 146/1125 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5394 event pairs, 23 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 752. Up to 80 conditions per place. [2023-08-27 05:07:04,321 INFO L119 LiptonReduction]: Number of co-enabled transitions 60270 [2023-08-27 05:07:07,903 INFO L134 LiptonReduction]: Checked pairs total: 146291 [2023-08-27 05:07:07,903 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-27 05:07:07,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:07,906 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:07,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:07,919 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:07,919 INFO L124 PetriNetUnfolderBase]: 43/215 cut-off events. [2023-08-27 05:07:07,919 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 05:07:07,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:07,919 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:07,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:07,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash -940232332, now seen corresponding path program 1 times [2023-08-27 05:07:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:07,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52460956] [2023-08-27 05:07:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:07,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:07,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:07,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:07,953 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:07,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:07,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:07:07,953 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:07,953 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:07,953 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:07,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 05:07:07,973 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-27 05:07:07,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 352 transitions, 782 flow [2023-08-27 05:07:08,317 INFO L124 PetriNetUnfolderBase]: 270/1895 cut-off events. [2023-08-27 05:07:08,318 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:07:08,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 1895 events. 270/1895 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11086 event pairs, 72 based on Foata normal form. 0/1520 useless extension candidates. Maximal degree in co-relation 1224. Up to 192 conditions per place. [2023-08-27 05:07:08,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 352 transitions, 782 flow [2023-08-27 05:07:08,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 352 transitions, 782 flow [2023-08-27 05:07:08,359 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:08,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 352 transitions, 782 flow [2023-08-27 05:07:08,359 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 352 transitions, 782 flow [2023-08-27 05:07:08,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 352 transitions, 782 flow [2023-08-27 05:07:08,588 INFO L124 PetriNetUnfolderBase]: 270/1895 cut-off events. [2023-08-27 05:07:08,588 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:07:08,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 1895 events. 270/1895 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11086 event pairs, 72 based on Foata normal form. 0/1520 useless extension candidates. Maximal degree in co-relation 1224. Up to 192 conditions per place. [2023-08-27 05:07:08,678 INFO L119 LiptonReduction]: Number of co-enabled transitions 83148 [2023-08-27 05:07:12,526 INFO L134 LiptonReduction]: Checked pairs total: 207119 [2023-08-27 05:07:12,526 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-08-27 05:07:12,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:12,529 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:12,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:12,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:12,546 INFO L124 PetriNetUnfolderBase]: 62/289 cut-off events. [2023-08-27 05:07:12,546 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-27 05:07:12,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:12,546 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:12,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:12,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash -355237678, now seen corresponding path program 1 times [2023-08-27 05:07:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:12,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373106763] [2023-08-27 05:07:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:12,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:12,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:12,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:12,612 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:12,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:12,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 05:07:12,612 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:12,612 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:12,613 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:12,613 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-27 05:07:12,637 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-27 05:07:12,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 395 transitions, 888 flow [2023-08-27 05:07:13,199 INFO L124 PetriNetUnfolderBase]: 538/3385 cut-off events. [2023-08-27 05:07:13,199 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:07:13,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 3385 events. 538/3385 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 24015 event pairs, 201 based on Foata normal form. 0/2735 useless extension candidates. Maximal degree in co-relation 2113. Up to 448 conditions per place. [2023-08-27 05:07:13,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 395 transitions, 888 flow [2023-08-27 05:07:13,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 395 transitions, 888 flow [2023-08-27 05:07:13,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:13,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 395 transitions, 888 flow [2023-08-27 05:07:13,320 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 395 transitions, 888 flow [2023-08-27 05:07:13,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 395 transitions, 888 flow [2023-08-27 05:07:13,874 INFO L124 PetriNetUnfolderBase]: 538/3385 cut-off events. [2023-08-27 05:07:13,874 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:07:13,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 3385 events. 538/3385 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 24015 event pairs, 201 based on Foata normal form. 0/2735 useless extension candidates. Maximal degree in co-relation 2113. Up to 448 conditions per place. [2023-08-27 05:07:14,033 INFO L119 LiptonReduction]: Number of co-enabled transitions 109634 [2023-08-27 05:07:17,386 INFO L134 LiptonReduction]: Checked pairs total: 275429 [2023-08-27 05:07:17,386 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-08-27 05:07:17,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:17,389 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:17,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:17,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:17,413 INFO L124 PetriNetUnfolderBase]: 83/389 cut-off events. [2023-08-27 05:07:17,413 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-27 05:07:17,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:17,413 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:17,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:17,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash -122355651, now seen corresponding path program 1 times [2023-08-27 05:07:17,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:17,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043246672] [2023-08-27 05:07:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:17,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:17,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:17,464 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:17,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:17,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 05:07:17,464 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:17,464 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:17,464 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:17,465 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-27 05:07:17,485 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 05:07:17,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 438 transitions, 996 flow [2023-08-27 05:07:18,639 INFO L124 PetriNetUnfolderBase]: 1126/6347 cut-off events. [2023-08-27 05:07:18,640 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:07:18,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7432 conditions, 6347 events. 1126/6347 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 53497 event pairs, 522 based on Foata normal form. 0/5166 useless extension candidates. Maximal degree in co-relation 3867. Up to 1024 conditions per place. [2023-08-27 05:07:18,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 438 transitions, 996 flow [2023-08-27 05:07:18,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 393 places, 438 transitions, 996 flow [2023-08-27 05:07:18,813 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:18,813 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 393 places, 438 transitions, 996 flow [2023-08-27 05:07:18,813 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 393 places, 438 transitions, 996 flow [2023-08-27 05:07:18,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 438 transitions, 996 flow [2023-08-27 05:07:19,857 INFO L124 PetriNetUnfolderBase]: 1126/6347 cut-off events. [2023-08-27 05:07:19,857 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:07:19,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7432 conditions, 6347 events. 1126/6347 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 53497 event pairs, 522 based on Foata normal form. 0/5166 useless extension candidates. Maximal degree in co-relation 3867. Up to 1024 conditions per place. [2023-08-27 05:07:20,287 INFO L119 LiptonReduction]: Number of co-enabled transitions 139728 [2023-08-27 05:07:24,065 INFO L134 LiptonReduction]: Checked pairs total: 355294 [2023-08-27 05:07:24,065 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-08-27 05:07:24,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:24,067 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:24,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:24,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:24,108 INFO L124 PetriNetUnfolderBase]: 113/507 cut-off events. [2023-08-27 05:07:24,108 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-27 05:07:24,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:24,109 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:24,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:24,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:24,109 INFO L85 PathProgramCache]: Analyzing trace with hash 617375727, now seen corresponding path program 1 times [2023-08-27 05:07:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:24,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125090162] [2023-08-27 05:07:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:24,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:24,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:24,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:24,167 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:24,168 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:24,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 05:07:24,168 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:24,168 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:24,168 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:24,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-27 05:07:24,201 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-27 05:07:24,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 481 transitions, 1106 flow [2023-08-27 05:07:27,055 INFO L124 PetriNetUnfolderBase]: 2418/12317 cut-off events. [2023-08-27 05:07:27,055 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:07:27,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14694 conditions, 12317 events. 2418/12317 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 120473 event pairs, 1291 based on Foata normal form. 0/10093 useless extension candidates. Maximal degree in co-relation 7414. Up to 2304 conditions per place. [2023-08-27 05:07:27,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 481 transitions, 1106 flow [2023-08-27 05:07:27,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 481 transitions, 1106 flow [2023-08-27 05:07:27,312 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:27,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 431 places, 481 transitions, 1106 flow [2023-08-27 05:07:27,312 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 431 places, 481 transitions, 1106 flow [2023-08-27 05:07:27,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 481 transitions, 1106 flow [2023-08-27 05:07:30,092 INFO L124 PetriNetUnfolderBase]: 2418/12317 cut-off events. [2023-08-27 05:07:30,093 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:07:30,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14694 conditions, 12317 events. 2418/12317 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 120473 event pairs, 1291 based on Foata normal form. 0/10093 useless extension candidates. Maximal degree in co-relation 7414. Up to 2304 conditions per place. [2023-08-27 05:07:30,763 INFO L119 LiptonReduction]: Number of co-enabled transitions 173430 [2023-08-27 05:07:34,867 INFO L134 LiptonReduction]: Checked pairs total: 494861 [2023-08-27 05:07:34,867 INFO L136 LiptonReduction]: Total number of compositions: 382 [2023-08-27 05:07:34,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:34,869 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:34,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:34,988 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:34,989 INFO L124 PetriNetUnfolderBase]: 159/685 cut-off events. [2023-08-27 05:07:34,989 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-27 05:07:34,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:34,989 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:34,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:34,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2078955463, now seen corresponding path program 1 times [2023-08-27 05:07:34,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:34,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918696020] [2023-08-27 05:07:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:34,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:35,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:35,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:35,057 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:35,057 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:35,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 05:07:35,058 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:35,061 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:35,062 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:35,064 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-27 05:07:35,096 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-27 05:07:35,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 469 places, 524 transitions, 1218 flow [2023-08-27 05:07:41,012 INFO L124 PetriNetUnfolderBase]: 5246/24431 cut-off events. [2023-08-27 05:07:41,012 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:07:41,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29637 conditions, 24431 events. 5246/24431 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 271875 event pairs, 3084 based on Foata normal form. 0/20140 useless extension candidates. Maximal degree in co-relation 14674. Up to 5120 conditions per place. [2023-08-27 05:07:41,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 469 places, 524 transitions, 1218 flow [2023-08-27 05:07:41,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 469 places, 524 transitions, 1218 flow [2023-08-27 05:07:41,791 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:41,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 469 places, 524 transitions, 1218 flow [2023-08-27 05:07:41,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 469 places, 524 transitions, 1218 flow [2023-08-27 05:07:41,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 469 places, 524 transitions, 1218 flow [2023-08-27 05:07:47,622 INFO L124 PetriNetUnfolderBase]: 5246/24431 cut-off events. [2023-08-27 05:07:47,623 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:07:48,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29637 conditions, 24431 events. 5246/24431 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 271875 event pairs, 3084 based on Foata normal form. 0/20140 useless extension candidates. Maximal degree in co-relation 14674. Up to 5120 conditions per place. [2023-08-27 05:07:49,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 210740 [2023-08-27 05:07:54,840 INFO L134 LiptonReduction]: Checked pairs total: 549960 [2023-08-27 05:07:54,840 INFO L136 LiptonReduction]: Total number of compositions: 412 [2023-08-27 05:07:54,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:54,841 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:54,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:54,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:54,912 INFO L124 PetriNetUnfolderBase]: 234/950 cut-off events. [2023-08-27 05:07:54,912 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-27 05:07:54,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:54,913 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:54,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:54,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1238040031, now seen corresponding path program 1 times [2023-08-27 05:07:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:54,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990793574] [2023-08-27 05:07:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:54,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:54,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:54,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:54,942 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:54,943 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:54,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 05:07:54,943 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:54,943 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:54,943 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:54,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-27 05:07:54,976 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-27 05:07:54,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 567 transitions, 1332 flow [2023-08-27 05:08:07,893 INFO L124 PetriNetUnfolderBase]: 11402/49089 cut-off events. [2023-08-27 05:08:07,894 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:08:09,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60453 conditions, 49089 events. 11402/49089 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 612521 event pairs, 7181 based on Foata normal form. 0/40683 useless extension candidates. Maximal degree in co-relation 29615. Up to 11264 conditions per place. [2023-08-27 05:08:09,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 507 places, 567 transitions, 1332 flow [2023-08-27 05:08:10,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 507 places, 567 transitions, 1332 flow [2023-08-27 05:08:10,796 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:10,796 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 507 places, 567 transitions, 1332 flow [2023-08-27 05:08:10,797 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 507 places, 567 transitions, 1332 flow [2023-08-27 05:08:10,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 567 transitions, 1332 flow [2023-08-27 05:08:23,493 INFO L124 PetriNetUnfolderBase]: 11402/49089 cut-off events. [2023-08-27 05:08:23,493 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:08:24,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60453 conditions, 49089 events. 11402/49089 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 612521 event pairs, 7181 based on Foata normal form. 0/40683 useless extension candidates. Maximal degree in co-relation 29615. Up to 11264 conditions per place. [2023-08-27 05:08:27,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 251658 [2023-08-27 05:08:31,932 INFO L134 LiptonReduction]: Checked pairs total: 646818 [2023-08-27 05:08:31,932 INFO L136 LiptonReduction]: Total number of compositions: 459 [2023-08-27 05:08:31,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:31,940 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;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:31,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:32,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:32,076 INFO L124 PetriNetUnfolderBase]: 360/1354 cut-off events. [2023-08-27 05:08:32,076 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-27 05:08:32,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:32,076 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:08:32,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:32,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:32,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1964397043, now seen corresponding path program 1 times [2023-08-27 05:08:32,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:32,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208426551] [2023-08-27 05:08:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:32,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:32,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:32,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:32,112 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:32,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:32,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 05:08:32,113 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:32,113 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:32,113 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:32,113 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-27 05:08:32,140 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-27 05:08:32,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 610 transitions, 1448 flow [2023-08-27 05:09:00,523 INFO L124 PetriNetUnfolderBase]: 24726/99347 cut-off events. [2023-08-27 05:09:00,524 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:09:04,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124038 conditions, 99347 events. 24726/99347 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1359870 event pairs, 16398 based on Foata normal form. 0/82730 useless extension candidates. Maximal degree in co-relation 60429. Up to 24576 conditions per place. [2023-08-27 05:09:04,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 545 places, 610 transitions, 1448 flow [2023-08-27 05:09:05,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 545 places, 610 transitions, 1448 flow [2023-08-27 05:09:05,815 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:09:05,816 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 545 places, 610 transitions, 1448 flow [2023-08-27 05:09:05,816 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 545 places, 610 transitions, 1448 flow [2023-08-27 05:09:05,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 610 transitions, 1448 flow [2023-08-27 05:09:33,816 INFO L124 PetriNetUnfolderBase]: 24726/99347 cut-off events. [2023-08-27 05:09:33,816 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:09:37,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124038 conditions, 99347 events. 24726/99347 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1359870 event pairs, 16398 based on Foata normal form. 0/82730 useless extension candidates. Maximal degree in co-relation 60429. Up to 24576 conditions per place. [2023-08-27 05:09:44,349 INFO L119 LiptonReduction]: Number of co-enabled transitions 296184 [2023-08-27 05:09:48,965 INFO L134 LiptonReduction]: Checked pairs total: 867034 [2023-08-27 05:09:48,965 INFO L136 LiptonReduction]: Total number of compositions: 473 [2023-08-27 05:09:48,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:09:48,967 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f7961de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:09:48,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:09:49,156 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:09:49,157 INFO L124 PetriNetUnfolderBase]: 560/1966 cut-off events. [2023-08-27 05:09:49,157 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-27 05:09:49,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:09:49,157 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:09:49,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:09:49,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:09:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 998436110, now seen corresponding path program 1 times [2023-08-27 05:09:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:09:49,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331646241] [2023-08-27 05:09:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:09:49,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:09:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:49,173 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:09:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:09:49,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:09:49,189 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:09:49,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:09:49,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 05:09:49,189 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:09:49,189 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:09:49,189 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:09:49,189 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-27 05:09:49,235 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-27 05:09:49,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 653 transitions, 1566 flow [2023-08-27 05:10:52,904 INFO L124 PetriNetUnfolderBase]: 53410/201829 cut-off events. [2023-08-27 05:10:52,904 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-27 05:11:02,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255208 conditions, 201829 events. 53410/201829 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2890. Compared 3002748 event pairs, 36879 based on Foata normal form. 0/168809 useless extension candidates. Maximal degree in co-relation 124012. Up to 53248 conditions per place. [2023-08-27 05:11:02,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 583 places, 653 transitions, 1566 flow [2023-08-27 05:11:07,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 583 places, 653 transitions, 1566 flow [2023-08-27 05:11:07,909 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:11:07,909 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 583 places, 653 transitions, 1566 flow [2023-08-27 05:11:07,909 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 583 places, 653 transitions, 1566 flow [2023-08-27 05:11:07,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 653 transitions, 1566 flow [2023-08-27 05:12:11,860 INFO L124 PetriNetUnfolderBase]: 53410/201829 cut-off events. [2023-08-27 05:12:11,860 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-27 05:12:21,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255208 conditions, 201829 events. 53410/201829 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2890. Compared 3002748 event pairs, 36879 based on Foata normal form. 0/168809 useless extension candidates. Maximal degree in co-relation 124012. Up to 53248 conditions per place.