/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_12-ptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:07:09,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:07:09,069 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 05:07:09,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:07:09,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:07:09,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:07:09,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:07:09,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:07:09,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:07:09,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:07:09,110 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:07:09,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:07:09,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:07:09,111 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:07:09,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:07:09,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:07:09,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:07:09,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:07:09,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:07:09,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:07:09,112 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:07:09,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:07:09,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:07:09,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:07:09,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:07:09,114 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:07:09,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:07:09,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:07:09,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:07:09,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:07:09,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:07:09,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:07:09,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:07:09,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:07:09,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:07:09,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:07:09,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:07:09,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:07:09,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:07:09,363 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:07:09,363 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:07:09,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-27 05:07:10,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:07:10,483 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:07:10,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-27 05:07:10,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6102d753/4284ffed4f8c4a6186957543ce436685/FLAGd7ea67c20 [2023-08-27 05:07:10,512 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6102d753/4284ffed4f8c4a6186957543ce436685 [2023-08-27 05:07:10,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:07:10,517 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:07:10,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:07:10,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:07:10,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:07:10,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38490e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10, skipping insertion in model container [2023-08-27 05:07:10,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,561 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:07:10,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:07:10,828 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:07:10,851 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:07:10,852 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:07:10,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:07:10,908 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:07:10,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10 WrapperNode [2023-08-27 05:07:10,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:07:10,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:07:10,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:07:10,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:07:10,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,958 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2023-08-27 05:07:10,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:07:10,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:07:10,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:07:10,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:07:10,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:10,987 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:07:10,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:07:10,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:07:10,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:07:10,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (1/1) ... [2023-08-27 05:07:11,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:07:11,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:07:11,016 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 05:07:11,024 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 05:07:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:07:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:07:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:07:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:07:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:07:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 05:07:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 05:07:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:07:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:07:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:07:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:07:11,044 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 05:07:11,129 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:07:11,131 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:07:11,293 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:07:11,303 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:07:11,303 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-27 05:07:11,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:07:11 BoogieIcfgContainer [2023-08-27 05:07:11,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:07:11,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:07:11,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:07:11,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:07:11,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:07:10" (1/3) ... [2023-08-27 05:07:11,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194eb96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:07:11, skipping insertion in model container [2023-08-27 05:07:11,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:07:10" (2/3) ... [2023-08-27 05:07:11,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194eb96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:07:11, skipping insertion in model container [2023-08-27 05:07:11,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:07:11" (3/3) ... [2023-08-27 05:07:11,310 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-08-27 05:07:11,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:07:11,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 05:07:11,323 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:07:11,375 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 05:07:11,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 139 transitions, 286 flow [2023-08-27 05:07:11,525 INFO L124 PetriNetUnfolderBase]: 19/180 cut-off events. [2023-08-27 05:07:11,525 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 05:07:11,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 180 events. 19/180 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. 0/148 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-27 05:07:11,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 139 transitions, 286 flow [2023-08-27 05:07:11,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 130 transitions, 265 flow [2023-08-27 05:07:11,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:11,550 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 130 transitions, 265 flow [2023-08-27 05:07:11,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 130 transitions, 265 flow [2023-08-27 05:07:11,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 265 flow [2023-08-27 05:07:11,586 INFO L124 PetriNetUnfolderBase]: 18/171 cut-off events. [2023-08-27 05:07:11,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:07:11,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 171 events. 18/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 440 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-27 05:07:11,589 INFO L119 LiptonReduction]: Number of co-enabled transitions 4182 [2023-08-27 05:07:14,151 INFO L134 LiptonReduction]: Checked pairs total: 7279 [2023-08-27 05:07:14,151 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-27 05:07:14,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:14,163 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:14,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:14,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:14,166 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-08-27 05:07:14,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:07:14,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:14,166 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:07:14,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:14,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1568994767, now seen corresponding path program 1 times [2023-08-27 05:07:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:14,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042236770] [2023-08-27 05:07:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:14,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:14,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:14,281 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:14,281 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:14,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:07:14,283 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:14,287 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:14,287 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:14,287 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:07:14,311 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 05:07:14,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-27 05:07:14,360 INFO L124 PetriNetUnfolderBase]: 34/301 cut-off events. [2023-08-27 05:07:14,360 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:07:14,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 34/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 968 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-08-27 05:07:14,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 182 transitions, 382 flow [2023-08-27 05:07:14,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 182 transitions, 382 flow [2023-08-27 05:07:14,363 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:14,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-27 05:07:14,364 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-27 05:07:14,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-27 05:07:14,382 INFO L124 PetriNetUnfolderBase]: 34/301 cut-off events. [2023-08-27 05:07:14,382 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:07:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 34/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 968 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-08-27 05:07:14,389 INFO L119 LiptonReduction]: Number of co-enabled transitions 13284 [2023-08-27 05:07:17,144 INFO L134 LiptonReduction]: Checked pairs total: 26837 [2023-08-27 05:07:17,144 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-27 05:07:17,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:17,147 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:17,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:17,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:17,151 INFO L124 PetriNetUnfolderBase]: 10/61 cut-off events. [2023-08-27 05:07:17,151 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 05:07:17,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:17,151 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:07:17,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:17,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash -55476422, now seen corresponding path program 1 times [2023-08-27 05:07:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957467426] [2023-08-27 05:07:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:17,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:17,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:17,203 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:17,203 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:07:17,204 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:17,204 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:17,204 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:17,204 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:07:17,223 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 05:07:17,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 225 transitions, 480 flow [2023-08-27 05:07:17,261 INFO L124 PetriNetUnfolderBase]: 54/463 cut-off events. [2023-08-27 05:07:17,261 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:07:17,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 463 events. 54/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1662 event pairs, 1 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-08-27 05:07:17,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 225 transitions, 480 flow [2023-08-27 05:07:17,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 225 transitions, 480 flow [2023-08-27 05:07:17,266 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:17,266 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 225 transitions, 480 flow [2023-08-27 05:07:17,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 225 transitions, 480 flow [2023-08-27 05:07:17,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 225 transitions, 480 flow [2023-08-27 05:07:17,298 INFO L124 PetriNetUnfolderBase]: 54/463 cut-off events. [2023-08-27 05:07:17,299 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:07:17,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 463 events. 54/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1662 event pairs, 1 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-08-27 05:07:17,313 INFO L119 LiptonReduction]: Number of co-enabled transitions 25338 [2023-08-27 05:07:20,392 INFO L134 LiptonReduction]: Checked pairs total: 56219 [2023-08-27 05:07:20,392 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-08-27 05:07:20,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:20,394 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:20,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:20,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:20,400 INFO L124 PetriNetUnfolderBase]: 22/106 cut-off events. [2023-08-27 05:07:20,400 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 05:07:20,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:20,400 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:07:20,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:20,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1781737210, now seen corresponding path program 1 times [2023-08-27 05:07:20,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:20,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409653014] [2023-08-27 05:07:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:20,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:20,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:20,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:20,442 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:20,442 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:20,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:07:20,442 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:20,443 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:20,443 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:20,443 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:07:20,462 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 05:07:20,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 268 transitions, 580 flow [2023-08-27 05:07:20,521 INFO L124 PetriNetUnfolderBase]: 86/709 cut-off events. [2023-08-27 05:07:20,521 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:07:20,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 709 events. 86/709 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2876 event pairs, 6 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 483. Up to 32 conditions per place. [2023-08-27 05:07:20,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 268 transitions, 580 flow [2023-08-27 05:07:20,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 268 transitions, 580 flow [2023-08-27 05:07:20,533 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:20,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 268 transitions, 580 flow [2023-08-27 05:07:20,533 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 268 transitions, 580 flow [2023-08-27 05:07:20,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 268 transitions, 580 flow [2023-08-27 05:07:20,614 INFO L124 PetriNetUnfolderBase]: 86/709 cut-off events. [2023-08-27 05:07:20,615 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:07:20,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 709 events. 86/709 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2876 event pairs, 6 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 483. Up to 32 conditions per place. [2023-08-27 05:07:20,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 41000 [2023-08-27 05:07:23,881 INFO L134 LiptonReduction]: Checked pairs total: 105876 [2023-08-27 05:07:23,881 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-27 05:07:23,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:23,883 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:23,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:23,890 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:23,890 INFO L124 PetriNetUnfolderBase]: 29/153 cut-off events. [2023-08-27 05:07:23,890 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 05:07:23,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:23,891 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:23,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:23,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1905371266, now seen corresponding path program 1 times [2023-08-27 05:07:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766812350] [2023-08-27 05:07:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:23,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:23,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:23,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:23,936 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:23,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:23,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:07:23,936 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:23,936 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:23,936 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:23,936 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 05:07:23,952 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-27 05:07:23,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 281 places, 311 transitions, 682 flow [2023-08-27 05:07:24,072 INFO L124 PetriNetUnfolderBase]: 146/1127 cut-off events. [2023-08-27 05:07:24,072 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:07:24,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 1127 events. 146/1127 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5388 event pairs, 23 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 754. Up to 80 conditions per place. [2023-08-27 05:07:24,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 281 places, 311 transitions, 682 flow [2023-08-27 05:07:24,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 281 places, 311 transitions, 682 flow [2023-08-27 05:07:24,096 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:24,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 281 places, 311 transitions, 682 flow [2023-08-27 05:07:24,096 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 281 places, 311 transitions, 682 flow [2023-08-27 05:07:24,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 281 places, 311 transitions, 682 flow [2023-08-27 05:07:24,210 INFO L124 PetriNetUnfolderBase]: 146/1127 cut-off events. [2023-08-27 05:07:24,210 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:07:24,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 1127 events. 146/1127 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5388 event pairs, 23 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 754. Up to 80 conditions per place. [2023-08-27 05:07:24,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 60270 [2023-08-27 05:07:27,724 INFO L134 LiptonReduction]: Checked pairs total: 147913 [2023-08-27 05:07:27,724 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-08-27 05:07:27,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:27,726 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:27,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:27,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:27,738 INFO L124 PetriNetUnfolderBase]: 48/220 cut-off events. [2023-08-27 05:07:27,738 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 05:07:27,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:27,738 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:27,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:27,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:27,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1457532405, now seen corresponding path program 1 times [2023-08-27 05:07:27,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:27,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094458899] [2023-08-27 05:07:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:27,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:27,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:27,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:27,796 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:27,796 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:27,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:07:27,797 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:27,797 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:27,797 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:27,797 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 05:07:27,824 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-27 05:07:27,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 354 transitions, 786 flow [2023-08-27 05:07:28,055 INFO L124 PetriNetUnfolderBase]: 270/1897 cut-off events. [2023-08-27 05:07:28,056 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:07:28,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 1897 events. 270/1897 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11112 event pairs, 72 based on Foata normal form. 0/1522 useless extension candidates. Maximal degree in co-relation 1226. Up to 192 conditions per place. [2023-08-27 05:07:28,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 354 transitions, 786 flow [2023-08-27 05:07:28,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 354 transitions, 786 flow [2023-08-27 05:07:28,104 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:28,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 319 places, 354 transitions, 786 flow [2023-08-27 05:07:28,104 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 319 places, 354 transitions, 786 flow [2023-08-27 05:07:28,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 354 transitions, 786 flow [2023-08-27 05:07:28,348 INFO L124 PetriNetUnfolderBase]: 270/1897 cut-off events. [2023-08-27 05:07:28,348 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:07:28,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 1897 events. 270/1897 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11112 event pairs, 72 based on Foata normal form. 0/1522 useless extension candidates. Maximal degree in co-relation 1226. Up to 192 conditions per place. [2023-08-27 05:07:28,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 83148 [2023-08-27 05:07:32,101 INFO L134 LiptonReduction]: Checked pairs total: 205982 [2023-08-27 05:07:32,101 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-08-27 05:07:32,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:32,103 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:32,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:32,119 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:32,119 INFO L124 PetriNetUnfolderBase]: 62/289 cut-off events. [2023-08-27 05:07:32,119 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-27 05:07:32,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:32,119 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:32,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:32,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:32,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2118217900, now seen corresponding path program 1 times [2023-08-27 05:07:32,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:32,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775388105] [2023-08-27 05:07:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:32,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:32,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:32,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:32,180 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:32,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:32,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 05:07:32,180 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:32,181 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:32,181 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:32,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-27 05:07:32,212 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-27 05:07:32,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 397 transitions, 892 flow [2023-08-27 05:07:32,679 INFO L124 PetriNetUnfolderBase]: 538/3387 cut-off events. [2023-08-27 05:07:32,679 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:07:32,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3885 conditions, 3387 events. 538/3387 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 23982 event pairs, 201 based on Foata normal form. 0/2737 useless extension candidates. Maximal degree in co-relation 2115. Up to 448 conditions per place. [2023-08-27 05:07:32,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 397 transitions, 892 flow [2023-08-27 05:07:32,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 397 transitions, 892 flow [2023-08-27 05:07:32,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:32,774 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 397 transitions, 892 flow [2023-08-27 05:07:32,775 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 397 transitions, 892 flow [2023-08-27 05:07:32,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 397 transitions, 892 flow [2023-08-27 05:07:33,215 INFO L124 PetriNetUnfolderBase]: 538/3387 cut-off events. [2023-08-27 05:07:33,215 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:07:33,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3885 conditions, 3387 events. 538/3387 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 23982 event pairs, 201 based on Foata normal form. 0/2737 useless extension candidates. Maximal degree in co-relation 2115. Up to 448 conditions per place. [2023-08-27 05:07:33,430 INFO L119 LiptonReduction]: Number of co-enabled transitions 109634 [2023-08-27 05:07:37,484 INFO L134 LiptonReduction]: Checked pairs total: 272821 [2023-08-27 05:07:37,485 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-08-27 05:07:37,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:37,486 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:37,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:37,526 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:37,526 INFO L124 PetriNetUnfolderBase]: 83/389 cut-off events. [2023-08-27 05:07:37,526 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-27 05:07:37,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:37,526 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:37,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:37,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash -479855517, now seen corresponding path program 1 times [2023-08-27 05:07:37,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:37,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253072937] [2023-08-27 05:07:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:37,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:37,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:37,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:37,588 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:37,588 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:37,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 05:07:37,588 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:37,588 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:37,588 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:37,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-27 05:07:37,615 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 05:07:37,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 395 places, 440 transitions, 1000 flow [2023-08-27 05:07:38,735 INFO L124 PetriNetUnfolderBase]: 1126/6349 cut-off events. [2023-08-27 05:07:38,735 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:07:38,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7434 conditions, 6349 events. 1126/6349 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 53471 event pairs, 522 based on Foata normal form. 0/5168 useless extension candidates. Maximal degree in co-relation 3869. Up to 1024 conditions per place. [2023-08-27 05:07:38,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 395 places, 440 transitions, 1000 flow [2023-08-27 05:07:38,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 395 places, 440 transitions, 1000 flow [2023-08-27 05:07:38,869 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:38,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 395 places, 440 transitions, 1000 flow [2023-08-27 05:07:38,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 395 places, 440 transitions, 1000 flow [2023-08-27 05:07:38,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 395 places, 440 transitions, 1000 flow [2023-08-27 05:07:39,915 INFO L124 PetriNetUnfolderBase]: 1126/6349 cut-off events. [2023-08-27 05:07:39,915 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:07:40,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7434 conditions, 6349 events. 1126/6349 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 53471 event pairs, 522 based on Foata normal form. 0/5168 useless extension candidates. Maximal degree in co-relation 3869. Up to 1024 conditions per place. [2023-08-27 05:07:40,344 INFO L119 LiptonReduction]: Number of co-enabled transitions 139728 [2023-08-27 05:07:44,962 INFO L134 LiptonReduction]: Checked pairs total: 396958 [2023-08-27 05:07:44,962 INFO L136 LiptonReduction]: Total number of compositions: 352 [2023-08-27 05:07:44,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:44,963 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:44,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:44,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:44,995 INFO L124 PetriNetUnfolderBase]: 113/507 cut-off events. [2023-08-27 05:07:44,995 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-27 05:07:44,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:44,995 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:44,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:44,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:44,996 INFO L85 PathProgramCache]: Analyzing trace with hash 593913911, now seen corresponding path program 1 times [2023-08-27 05:07:44,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:44,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558768938] [2023-08-27 05:07:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:44,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:45,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:45,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:45,063 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:45,063 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:45,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 05:07:45,063 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:45,063 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:45,064 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:45,064 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-27 05:07:45,090 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-27 05:07:45,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 433 places, 483 transitions, 1110 flow [2023-08-27 05:07:47,434 INFO L124 PetriNetUnfolderBase]: 2418/12319 cut-off events. [2023-08-27 05:07:47,435 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:07:47,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14696 conditions, 12319 events. 2418/12319 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 120514 event pairs, 1291 based on Foata normal form. 0/10095 useless extension candidates. Maximal degree in co-relation 7416. Up to 2304 conditions per place. [2023-08-27 05:07:47,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 433 places, 483 transitions, 1110 flow [2023-08-27 05:07:47,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 433 places, 483 transitions, 1110 flow [2023-08-27 05:07:47,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:47,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 433 places, 483 transitions, 1110 flow [2023-08-27 05:07:47,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 433 places, 483 transitions, 1110 flow [2023-08-27 05:07:47,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 433 places, 483 transitions, 1110 flow [2023-08-27 05:07:50,305 INFO L124 PetriNetUnfolderBase]: 2418/12319 cut-off events. [2023-08-27 05:07:50,305 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:07:50,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14696 conditions, 12319 events. 2418/12319 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 120514 event pairs, 1291 based on Foata normal form. 0/10095 useless extension candidates. Maximal degree in co-relation 7416. Up to 2304 conditions per place. [2023-08-27 05:07:51,124 INFO L119 LiptonReduction]: Number of co-enabled transitions 173430 [2023-08-27 05:07:55,786 INFO L134 LiptonReduction]: Checked pairs total: 442507 [2023-08-27 05:07:55,786 INFO L136 LiptonReduction]: Total number of compositions: 384 [2023-08-27 05:07:55,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:07:55,788 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:07:55,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:07:55,836 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:07:55,836 INFO L124 PetriNetUnfolderBase]: 150/676 cut-off events. [2023-08-27 05:07:55,836 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-27 05:07:55,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:07:55,837 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:07:55,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:07:55,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:07:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1382935792, now seen corresponding path program 1 times [2023-08-27 05:07:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:07:55,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596735051] [2023-08-27 05:07:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:07:55,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:07:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:55,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:07:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:07:55,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:07:55,884 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:07:55,884 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:07:55,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 05:07:55,884 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:07:55,887 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:07:55,887 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:07:55,889 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-27 05:07:55,912 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-27 05:07:55,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 471 places, 526 transitions, 1222 flow [2023-08-27 05:08:01,286 INFO L124 PetriNetUnfolderBase]: 5246/24433 cut-off events. [2023-08-27 05:08:01,287 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:08:01,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29639 conditions, 24433 events. 5246/24433 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 271785 event pairs, 3084 based on Foata normal form. 0/20142 useless extension candidates. Maximal degree in co-relation 14676. Up to 5120 conditions per place. [2023-08-27 05:08:01,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 471 places, 526 transitions, 1222 flow [2023-08-27 05:08:02,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 471 places, 526 transitions, 1222 flow [2023-08-27 05:08:02,111 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:02,111 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 471 places, 526 transitions, 1222 flow [2023-08-27 05:08:02,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 471 places, 526 transitions, 1222 flow [2023-08-27 05:08:02,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 471 places, 526 transitions, 1222 flow [2023-08-27 05:08:07,474 INFO L124 PetriNetUnfolderBase]: 5246/24433 cut-off events. [2023-08-27 05:08:07,474 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:08:08,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29639 conditions, 24433 events. 5246/24433 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 271785 event pairs, 3084 based on Foata normal form. 0/20142 useless extension candidates. Maximal degree in co-relation 14676. Up to 5120 conditions per place. [2023-08-27 05:08:09,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 210740 [2023-08-27 05:08:14,180 INFO L134 LiptonReduction]: Checked pairs total: 548672 [2023-08-27 05:08:14,180 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-08-27 05:08:14,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:14,182 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:14,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:14,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:14,252 INFO L124 PetriNetUnfolderBase]: 224/940 cut-off events. [2023-08-27 05:08:14,252 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-27 05:08:14,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:14,252 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:08:14,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:14,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:14,253 INFO L85 PathProgramCache]: Analyzing trace with hash -141646982, now seen corresponding path program 1 times [2023-08-27 05:08:14,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:14,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230429721] [2023-08-27 05:08:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:14,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:14,269 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:14,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:14,283 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:14,284 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:14,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 05:08:14,284 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:14,284 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:14,284 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:14,284 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-27 05:08:14,307 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-27 05:08:14,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 509 places, 569 transitions, 1336 flow [2023-08-27 05:08:26,320 INFO L124 PetriNetUnfolderBase]: 11402/49091 cut-off events. [2023-08-27 05:08:26,320 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:08:27,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60455 conditions, 49091 events. 11402/49091 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 612723 event pairs, 7181 based on Foata normal form. 0/40685 useless extension candidates. Maximal degree in co-relation 29617. Up to 11264 conditions per place. [2023-08-27 05:08:27,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 509 places, 569 transitions, 1336 flow [2023-08-27 05:08:28,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 509 places, 569 transitions, 1336 flow [2023-08-27 05:08:28,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:08:28,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 509 places, 569 transitions, 1336 flow [2023-08-27 05:08:28,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 509 places, 569 transitions, 1336 flow [2023-08-27 05:08:28,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 509 places, 569 transitions, 1336 flow [2023-08-27 05:08:40,307 INFO L124 PetriNetUnfolderBase]: 11402/49091 cut-off events. [2023-08-27 05:08:40,307 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:08:41,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60455 conditions, 49091 events. 11402/49091 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 612723 event pairs, 7181 based on Foata normal form. 0/40685 useless extension candidates. Maximal degree in co-relation 29617. Up to 11264 conditions per place. [2023-08-27 05:08:44,387 INFO L119 LiptonReduction]: Number of co-enabled transitions 251658 [2023-08-27 05:08:49,754 INFO L134 LiptonReduction]: Checked pairs total: 643377 [2023-08-27 05:08:49,754 INFO L136 LiptonReduction]: Total number of compositions: 456 [2023-08-27 05:08:49,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:49,756 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:49,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:08:49,862 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:49,862 INFO L124 PetriNetUnfolderBase]: 360/1354 cut-off events. [2023-08-27 05:08:49,862 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-27 05:08:49,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:49,863 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:08:49,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:49,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:49,863 INFO L85 PathProgramCache]: Analyzing trace with hash -870165470, now seen corresponding path program 1 times [2023-08-27 05:08:49,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:49,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028005331] [2023-08-27 05:08:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:49,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:49,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:49,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:49,899 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:49,899 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:08:49,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 05:08:49,899 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:49,899 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:08:49,899 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:49,899 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-27 05:08:49,927 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-27 05:08:49,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 547 places, 612 transitions, 1452 flow [2023-08-27 05:09:17,801 INFO L124 PetriNetUnfolderBase]: 24726/99349 cut-off events. [2023-08-27 05:09:17,802 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:09:23,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124040 conditions, 99349 events. 24726/99349 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1360176 event pairs, 16398 based on Foata normal form. 0/82732 useless extension candidates. Maximal degree in co-relation 60431. Up to 24576 conditions per place. [2023-08-27 05:09:23,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 547 places, 612 transitions, 1452 flow [2023-08-27 05:09:24,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 547 places, 612 transitions, 1452 flow [2023-08-27 05:09:24,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:09:24,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 547 places, 612 transitions, 1452 flow [2023-08-27 05:09:24,498 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 547 places, 612 transitions, 1452 flow [2023-08-27 05:09:24,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 547 places, 612 transitions, 1452 flow [2023-08-27 05:09:50,059 INFO L124 PetriNetUnfolderBase]: 24726/99349 cut-off events. [2023-08-27 05:09:50,059 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:09:55,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124040 conditions, 99349 events. 24726/99349 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1360176 event pairs, 16398 based on Foata normal form. 0/82732 useless extension candidates. Maximal degree in co-relation 60431. Up to 24576 conditions per place. [2023-08-27 05:10:02,425 INFO L119 LiptonReduction]: Number of co-enabled transitions 296184 [2023-08-27 05:10:07,946 INFO L134 LiptonReduction]: Checked pairs total: 870386 [2023-08-27 05:10:07,946 INFO L136 LiptonReduction]: Total number of compositions: 472 [2023-08-27 05:10:07,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:10:07,948 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;@6e79f2d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:10:07,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:10:08,122 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:10:08,122 INFO L124 PetriNetUnfolderBase]: 572/1978 cut-off events. [2023-08-27 05:10:08,122 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-27 05:10:08,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:10:08,122 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 05:10:08,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:10:08,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:10:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1833843186, now seen corresponding path program 1 times [2023-08-27 05:10:08,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:10:08,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729146411] [2023-08-27 05:10:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:10:08,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:10:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:08,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:10:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:08,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:10:08,161 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:10:08,161 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:10:08,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 05:10:08,161 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:10:08,163 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:10:08,163 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:10:08,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-27 05:10:08,200 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-27 05:10:08,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 585 places, 655 transitions, 1570 flow [2023-08-27 05:11:06,420 INFO L124 PetriNetUnfolderBase]: 53410/201831 cut-off events. [2023-08-27 05:11:06,420 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-27 05:11:21,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255210 conditions, 201831 events. 53410/201831 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2890. Compared 3002491 event pairs, 36879 based on Foata normal form. 0/168811 useless extension candidates. Maximal degree in co-relation 124014. Up to 53248 conditions per place. [2023-08-27 05:11:21,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 585 places, 655 transitions, 1570 flow [2023-08-27 05:11:27,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 585 places, 655 transitions, 1570 flow [2023-08-27 05:11:27,149 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:11:27,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 585 places, 655 transitions, 1570 flow [2023-08-27 05:11:27,150 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 585 places, 655 transitions, 1570 flow [2023-08-27 05:11:27,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 585 places, 655 transitions, 1570 flow