/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_10-ptrmunge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:06:11,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:06:11,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 05:06:11,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:06:11,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:06:11,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:06:11,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:06:11,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:06:11,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:06:11,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:06:11,659 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:06:11,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:06:11,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:06:11,660 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:06:11,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:06:11,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:06:11,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:06:11,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:06:11,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:06:11,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:06:11,662 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:06:11,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:06:11,663 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:06:11,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:06:11,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:06:11,664 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:06:11,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:06:11,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:06:11,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:06:11,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:06:11,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:06:11,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:06:11,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:06:11,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:06:11,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:06:11,667 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:06:12,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:06:12,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:06:12,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:06:12,029 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:06:12,029 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:06:12,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-27 05:06:13,147 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:06:13,448 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:06:13,448 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-27 05:06:13,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a46ef0e/4b6d61fdcadf40019f4c4369047c10f3/FLAG2748d8131 [2023-08-27 05:06:13,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a46ef0e/4b6d61fdcadf40019f4c4369047c10f3 [2023-08-27 05:06:13,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:06:13,484 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:06:13,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:06:13,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:06:13,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:06:13,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:06:13" (1/1) ... [2023-08-27 05:06:13,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43694bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:13, skipping insertion in model container [2023-08-27 05:06:13,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:06:13" (1/1) ... [2023-08-27 05:06:13,543 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:06:13,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:06:13,902 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:06:13,930 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:06:13,932 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:06:13,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:06:14,007 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:06:14,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14 WrapperNode [2023-08-27 05:06:14,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:06:14,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:06:14,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:06:14,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:06:14,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,087 INFO L138 Inliner]: procedures = 172, calls = 53, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 246 [2023-08-27 05:06:14,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:06:14,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:06:14,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:06:14,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:06:14,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:06:14,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:06:14,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:06:14,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:06:14,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (1/1) ... [2023-08-27 05:06:14,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:06:14,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:06:14,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 05:06:14,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 05:06:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:06:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-27 05:06:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-27 05:06:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:06:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:06:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:06:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:06:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-27 05:06:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-27 05:06:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:06:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:06:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:06:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:06:14,218 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 05:06:14,360 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:06:14,363 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:06:14,752 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:06:14,760 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:06:14,760 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-27 05:06:14,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:06:14 BoogieIcfgContainer [2023-08-27 05:06:14,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:06:14,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:06:14,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:06:14,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:06:14,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:06:13" (1/3) ... [2023-08-27 05:06:14,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e6bd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:06:14, skipping insertion in model container [2023-08-27 05:06:14,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:06:14" (2/3) ... [2023-08-27 05:06:14,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e6bd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:06:14, skipping insertion in model container [2023-08-27 05:06:14,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:06:14" (3/3) ... [2023-08-27 05:06:14,769 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-08-27 05:06:14,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:06:14,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-27 05:06:14,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:06:14,928 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 05:06:14,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 261 transitions, 544 flow [2023-08-27 05:06:15,144 INFO L124 PetriNetUnfolderBase]: 61/468 cut-off events. [2023-08-27 05:06:15,145 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 05:06:15,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 468 events. 61/468 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2087 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 250. Up to 8 conditions per place. [2023-08-27 05:06:15,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 261 transitions, 544 flow [2023-08-27 05:06:15,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 261 transitions, 544 flow [2023-08-27 05:06:15,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:06:15,184 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 261 transitions, 544 flow [2023-08-27 05:06:15,186 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 261 transitions, 544 flow [2023-08-27 05:06:15,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 261 transitions, 544 flow [2023-08-27 05:06:15,264 INFO L124 PetriNetUnfolderBase]: 61/468 cut-off events. [2023-08-27 05:06:15,264 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 05:06:15,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 468 events. 61/468 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2087 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 250. Up to 8 conditions per place. [2023-08-27 05:06:15,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 29346 [2023-08-27 05:06:20,720 INFO L134 LiptonReduction]: Checked pairs total: 53499 [2023-08-27 05:06:20,720 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-08-27 05:06:20,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:06:20,737 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;@13a074f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:06:20,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:06:20,743 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:06:20,743 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-08-27 05:06:20,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:06:20,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:06:20,744 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:06:20,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:06:20,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:06:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1223999190, now seen corresponding path program 1 times [2023-08-27 05:06:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:06:20,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527478121] [2023-08-27 05:06:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:06:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:06:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:20,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:06:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:20,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:06:20,959 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:06:20,960 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:06:20,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:06:20,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:06:20,963 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:06:20,967 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:06:20,968 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:06:20,968 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:06:21,021 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 05:06:21,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 413 transitions, 874 flow [2023-08-27 05:06:21,281 INFO L124 PetriNetUnfolderBase]: 205/1397 cut-off events. [2023-08-27 05:06:21,281 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 05:06:21,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 1397 events. 205/1397 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8877 event pairs, 2 based on Foata normal form. 0/1089 useless extension candidates. Maximal degree in co-relation 846. Up to 32 conditions per place. [2023-08-27 05:06:21,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 413 transitions, 874 flow [2023-08-27 05:06:21,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 413 transitions, 874 flow [2023-08-27 05:06:21,334 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:06:21,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 358 places, 413 transitions, 874 flow [2023-08-27 05:06:21,335 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 358 places, 413 transitions, 874 flow [2023-08-27 05:06:21,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 413 transitions, 874 flow [2023-08-27 05:06:21,607 INFO L124 PetriNetUnfolderBase]: 205/1397 cut-off events. [2023-08-27 05:06:21,608 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 05:06:21,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 1397 events. 205/1397 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8877 event pairs, 2 based on Foata normal form. 0/1089 useless extension candidates. Maximal degree in co-relation 846. Up to 32 conditions per place. [2023-08-27 05:06:21,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 104244 [2023-08-27 05:06:27,925 INFO L134 LiptonReduction]: Checked pairs total: 222805 [2023-08-27 05:06:27,926 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-08-27 05:06:27,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:06:27,929 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;@13a074f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:06:27,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:06:27,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:06:27,939 INFO L124 PetriNetUnfolderBase]: 30/137 cut-off events. [2023-08-27 05:06:27,939 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 05:06:27,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:06:27,940 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:06:27,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:06:27,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:06:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash -373338922, now seen corresponding path program 1 times [2023-08-27 05:06:27,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:06:27,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107691113] [2023-08-27 05:06:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:06:27,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:06:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:27,993 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:06:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:28,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:06:28,022 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:06:28,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:06:28,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:06:28,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:06:28,023 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:06:28,023 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:06:28,024 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:06:28,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:06:28,089 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-27 05:06:28,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 565 transitions, 1208 flow [2023-08-27 05:06:29,252 INFO L124 PetriNetUnfolderBase]: 679/3996 cut-off events. [2023-08-27 05:06:29,252 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-27 05:06:29,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 3996 events. 679/3996 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 31426 event pairs, 32 based on Foata normal form. 0/3148 useless extension candidates. Maximal degree in co-relation 2510. Up to 192 conditions per place. [2023-08-27 05:06:29,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 484 places, 565 transitions, 1208 flow [2023-08-27 05:06:29,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 484 places, 565 transitions, 1208 flow [2023-08-27 05:06:29,383 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:06:29,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 484 places, 565 transitions, 1208 flow [2023-08-27 05:06:29,384 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 484 places, 565 transitions, 1208 flow [2023-08-27 05:06:29,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 565 transitions, 1208 flow [2023-08-27 05:06:30,578 INFO L124 PetriNetUnfolderBase]: 679/3996 cut-off events. [2023-08-27 05:06:30,579 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-27 05:06:30,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 3996 events. 679/3996 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 31426 event pairs, 32 based on Foata normal form. 0/3148 useless extension candidates. Maximal degree in co-relation 2510. Up to 192 conditions per place. [2023-08-27 05:06:30,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 224694 [2023-08-27 05:06:38,464 INFO L134 LiptonReduction]: Checked pairs total: 508259 [2023-08-27 05:06:38,464 INFO L136 LiptonReduction]: Total number of compositions: 482 [2023-08-27 05:06:38,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:06:38,468 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;@13a074f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:06:38,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:06:38,487 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:06:38,487 INFO L124 PetriNetUnfolderBase]: 80/323 cut-off events. [2023-08-27 05:06:38,487 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-27 05:06:38,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:06:38,487 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:06:38,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:06:38,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:06:38,488 INFO L85 PathProgramCache]: Analyzing trace with hash 334957074, now seen corresponding path program 1 times [2023-08-27 05:06:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:06:38,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953766143] [2023-08-27 05:06:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:06:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:06:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:38,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:06:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:38,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:06:38,542 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:06:38,542 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:06:38,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:06:38,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:06:38,542 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:06:38,543 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:06:38,543 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:06:38,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:06:38,598 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-27 05:06:38,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 610 places, 717 transitions, 1546 flow [2023-08-27 05:06:43,175 INFO L124 PetriNetUnfolderBase]: 2671/13017 cut-off events. [2023-08-27 05:06:43,175 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-27 05:06:43,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15182 conditions, 13017 events. 2671/13017 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 127041 event pairs, 313 based on Foata normal form. 0/10433 useless extension candidates. Maximal degree in co-relation 8024. Up to 1024 conditions per place. [2023-08-27 05:06:43,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 610 places, 717 transitions, 1546 flow [2023-08-27 05:06:43,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 610 places, 717 transitions, 1546 flow [2023-08-27 05:06:43,972 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:06:43,972 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 610 places, 717 transitions, 1546 flow [2023-08-27 05:06:43,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 610 places, 717 transitions, 1546 flow [2023-08-27 05:06:43,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 610 places, 717 transitions, 1546 flow [2023-08-27 05:06:48,414 INFO L124 PetriNetUnfolderBase]: 2671/13017 cut-off events. [2023-08-27 05:06:48,415 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2023-08-27 05:06:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15182 conditions, 13017 events. 2671/13017 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 127041 event pairs, 313 based on Foata normal form. 0/10433 useless extension candidates. Maximal degree in co-relation 8024. Up to 1024 conditions per place. [2023-08-27 05:06:50,053 INFO L119 LiptonReduction]: Number of co-enabled transitions 390696 [2023-08-27 05:06:58,596 INFO L134 LiptonReduction]: Checked pairs total: 894673 [2023-08-27 05:06:58,596 INFO L136 LiptonReduction]: Total number of compositions: 610 [2023-08-27 05:06:58,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:06:58,599 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;@13a074f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:06:58,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:06:58,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:06:58,642 INFO L124 PetriNetUnfolderBase]: 146/578 cut-off events. [2023-08-27 05:06:58,642 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-08-27 05:06:58,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:06:58,643 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 05:06:58,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:06:58,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:06:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash -642916732, now seen corresponding path program 1 times [2023-08-27 05:06:58,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:06:58,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265287034] [2023-08-27 05:06:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:06:58,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:06:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:58,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:06:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:06:58,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:06:58,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:06:58,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:06:58,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:06:58,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:06:58,701 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:06:58,701 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:06:58,701 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:06:58,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 05:06:58,768 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-27 05:06:58,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 736 places, 869 transitions, 1888 flow [2023-08-27 05:07:21,934 INFO L124 PetriNetUnfolderBase]: 11797/48332 cut-off events. [2023-08-27 05:07:21,935 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-27 05:07:25,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58758 conditions, 48332 events. 11797/48332 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 579623 event pairs, 2148 based on Foata normal form. 0/39360 useless extension candidates. Maximal degree in co-relation 29482. Up to 5120 conditions per place. [2023-08-27 05:07:25,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 736 places, 869 transitions, 1888 flow [2023-08-27 05:07:27,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 736 places, 869 transitions, 1888 flow [2023-08-27 05:07:27,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:07:27,031 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 736 places, 869 transitions, 1888 flow [2023-08-27 05:07:27,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 736 places, 869 transitions, 1888 flow [2023-08-27 05:07:27,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 736 places, 869 transitions, 1888 flow [2023-08-27 05:07:49,305 INFO L124 PetriNetUnfolderBase]: 11797/48332 cut-off events. [2023-08-27 05:07:49,305 INFO L125 PetriNetUnfolderBase]: For 10450/10450 co-relation queries the response was YES. [2023-08-27 05:07:52,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58758 conditions, 48332 events. 11797/48332 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 579623 event pairs, 2148 based on Foata normal form. 0/39360 useless extension candidates. Maximal degree in co-relation 29482. Up to 5120 conditions per place. [2023-08-27 05:07:58,486 INFO L119 LiptonReduction]: Number of co-enabled transitions 602250 [2023-08-27 05:08:08,498 INFO L134 LiptonReduction]: Checked pairs total: 1272396 [2023-08-27 05:08:08,498 INFO L136 LiptonReduction]: Total number of compositions: 735 [2023-08-27 05:08:08,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:08:08,501 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;@13a074f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:08:08,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:08:08,603 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:08:08,604 INFO L124 PetriNetUnfolderBase]: 254/972 cut-off events. [2023-08-27 05:08:08,604 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2023-08-27 05:08:08,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:08:08,604 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:08:08,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:08:08,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:08:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash -53387801, now seen corresponding path program 1 times [2023-08-27 05:08:08,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:08:08,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298252308] [2023-08-27 05:08:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:08:08,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:08:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:08,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:08:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:08:08,709 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:08:08,709 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:08:08,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:08:08,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:08:08,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:08:08,710 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:08:08,710 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-27 05:08:08,710 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:08:08,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 05:08:08,833 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-27 05:08:08,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 862 places, 1021 transitions, 2234 flow