/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 -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:18:51,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:18:51,537 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 [2023-08-24 06:18:51,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:18:51,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:18:51,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:18:51,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:18:51,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:18:51,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:18:51,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:18:51,568 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:18:51,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:18:51,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:18:51,569 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:18:51,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:18:51,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:18:51,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:18:51,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:18:51,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:18:51,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:18:51,570 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:18:51,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:18:51,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:18:51,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:18:51,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:18:51,572 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:18:51,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:18:51,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:18:51,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:18:51,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:18:51,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:18:51,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:18:51,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:18:51,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:18:51,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:18:51,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:18:51,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:18:51,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:18:51,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:18:51,828 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:18:51,828 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:18:51,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-24 06:18:52,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:18:53,017 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:18:53,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-24 06:18:53,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684b083f3/1024568109454cc8add2058b9d590f1a/FLAGae310bcd3 [2023-08-24 06:18:53,042 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/684b083f3/1024568109454cc8add2058b9d590f1a [2023-08-24 06:18:53,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:18:53,046 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:18:53,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:18:53,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:18:53,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:18:53,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b0a5ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53, skipping insertion in model container [2023-08-24 06:18:53,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,091 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:18:53,266 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2023-08-24 06:18:53,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:18:53,284 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:18:53,296 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:18:53,297 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:18:53,306 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2023-08-24 06:18:53,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:18:53,339 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:18:53,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53 WrapperNode [2023-08-24 06:18:53,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:18:53,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:18:53,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:18:53,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:18:53,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,394 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 205 [2023-08-24 06:18:53,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:18:53,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:18:53,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:18:53,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:18:53,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:18:53,432 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:18:53,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:18:53,433 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:18:53,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (1/1) ... [2023-08-24 06:18:53,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:18:53,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:18:53,457 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) [2023-08-24 06:18:53,471 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 [2023-08-24 06:18:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:18:53,487 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 06:18:53,487 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 06:18:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:18:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:18:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:18:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:18:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-24 06:18:53,488 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-24 06:18:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:18:53,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:18:53,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:18:53,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:18:53,490 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 06:18:53,600 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:18:53,601 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:18:53,791 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:18:53,797 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:18:53,797 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-24 06:18:53,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:18:53 BoogieIcfgContainer [2023-08-24 06:18:53,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:18:53,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:18:53,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:18:53,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:18:53,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:18:53" (1/3) ... [2023-08-24 06:18:53,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289d3227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:18:53, skipping insertion in model container [2023-08-24 06:18:53,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:53" (2/3) ... [2023-08-24 06:18:53,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289d3227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:18:53, skipping insertion in model container [2023-08-24 06:18:53,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:18:53" (3/3) ... [2023-08-24 06:18:53,804 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-08-24 06:18:53,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:18:53,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 06:18:53,814 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:18:53,898 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 06:18:53,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 202 transitions, 426 flow [2023-08-24 06:18:53,996 INFO L124 PetriNetUnfolderBase]: 58/370 cut-off events. [2023-08-24 06:18:53,996 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-24 06:18:54,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 370 events. 58/370 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1553 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 196. Up to 8 conditions per place. [2023-08-24 06:18:54,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 202 transitions, 426 flow [2023-08-24 06:18:54,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 202 transitions, 426 flow [2023-08-24 06:18:54,008 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:18:54,013 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 202 transitions, 426 flow [2023-08-24 06:18:54,015 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 202 transitions, 426 flow [2023-08-24 06:18:54,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 202 transitions, 426 flow [2023-08-24 06:18:54,067 INFO L124 PetriNetUnfolderBase]: 58/370 cut-off events. [2023-08-24 06:18:54,068 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-24 06:18:54,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 370 events. 58/370 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1553 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 196. Up to 8 conditions per place. [2023-08-24 06:18:54,080 INFO L119 LiptonReduction]: Number of co-enabled transitions 16632 [2023-08-24 06:18:57,021 INFO L134 LiptonReduction]: Checked pairs total: 31278 [2023-08-24 06:18:57,021 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-24 06:18:57,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:18:57,033 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;@7bc3056c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:18:57,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:18:57,036 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:18:57,036 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-24 06:18:57,036 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:18:57,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:18:57,037 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 06:18:57,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:18:57,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:18:57,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1702616236, now seen corresponding path program 1 times [2023-08-24 06:18:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:18:57,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402047427] [2023-08-24 06:18:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:18:57,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:18:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:18:57,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:18:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:18:57,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:18:57,179 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:18:57,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:18:57,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:18:57,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:18:57,182 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:18:57,183 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:18:57,184 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:18:57,184 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 06:18:57,215 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-24 06:18:57,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 316 transitions, 680 flow [2023-08-24 06:18:57,352 INFO L124 PetriNetUnfolderBase]: 197/1088 cut-off events. [2023-08-24 06:18:57,352 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-24 06:18:57,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 1088 events. 197/1088 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6384 event pairs, 1 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 665. Up to 32 conditions per place. [2023-08-24 06:18:57,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 316 transitions, 680 flow [2023-08-24 06:18:57,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 316 transitions, 680 flow [2023-08-24 06:18:57,372 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:18:57,372 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 316 transitions, 680 flow [2023-08-24 06:18:57,372 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 316 transitions, 680 flow [2023-08-24 06:18:57,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 316 transitions, 680 flow [2023-08-24 06:18:57,476 INFO L124 PetriNetUnfolderBase]: 197/1088 cut-off events. [2023-08-24 06:18:57,476 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-08-24 06:18:57,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 1088 events. 197/1088 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6384 event pairs, 1 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 665. Up to 32 conditions per place. [2023-08-24 06:18:57,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 58752 [2023-08-24 06:19:00,890 INFO L134 LiptonReduction]: Checked pairs total: 123607 [2023-08-24 06:19:00,890 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-24 06:19:00,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:19:00,892 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;@7bc3056c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:19:00,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:19:00,900 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:19:00,900 INFO L124 PetriNetUnfolderBase]: 35/138 cut-off events. [2023-08-24 06:19:00,900 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-24 06:19:00,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:19:00,900 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 06:19:00,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:19:00,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:19:00,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1769013326, now seen corresponding path program 1 times [2023-08-24 06:19:00,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:19:00,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168009722] [2023-08-24 06:19:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:19:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:19:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:00,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:19:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:00,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:19:00,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:19:00,937 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:19:00,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:19:00,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:19:00,937 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:19:00,938 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:19:00,938 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:19:00,938 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 06:19:00,993 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-24 06:19:00,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 430 transitions, 938 flow [2023-08-24 06:19:01,488 INFO L124 PetriNetUnfolderBase]: 664/3142 cut-off events. [2023-08-24 06:19:01,488 INFO L125 PetriNetUnfolderBase]: For 419/431 co-relation queries the response was YES. [2023-08-24 06:19:01,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3593 conditions, 3142 events. 664/3142 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22997 event pairs, 32 based on Foata normal form. 0/2651 useless extension candidates. Maximal degree in co-relation 2004. Up to 192 conditions per place. [2023-08-24 06:19:01,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 430 transitions, 938 flow [2023-08-24 06:19:01,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 430 transitions, 938 flow [2023-08-24 06:19:01,554 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:19:01,554 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 430 transitions, 938 flow [2023-08-24 06:19:01,555 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 430 transitions, 938 flow [2023-08-24 06:19:01,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 430 transitions, 938 flow [2023-08-24 06:19:01,965 INFO L124 PetriNetUnfolderBase]: 664/3142 cut-off events. [2023-08-24 06:19:01,966 INFO L125 PetriNetUnfolderBase]: For 419/431 co-relation queries the response was YES. [2023-08-24 06:19:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3593 conditions, 3142 events. 664/3142 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22997 event pairs, 32 based on Foata normal form. 0/2651 useless extension candidates. Maximal degree in co-relation 2004. Up to 192 conditions per place. [2023-08-24 06:19:02,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 126360 [2023-08-24 06:19:05,992 INFO L134 LiptonReduction]: Checked pairs total: 305329 [2023-08-24 06:19:05,993 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-08-24 06:19:05,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:19:05,995 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;@7bc3056c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:19:05,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:19:06,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:19:06,007 INFO L124 PetriNetUnfolderBase]: 71/267 cut-off events. [2023-08-24 06:19:06,007 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-24 06:19:06,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:19:06,007 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 06:19:06,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:19:06,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:19:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash 227407654, now seen corresponding path program 1 times [2023-08-24 06:19:06,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:19:06,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002443996] [2023-08-24 06:19:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:19:06,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:19:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:06,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:19:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:06,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:19:06,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:19:06,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:19:06,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:19:06,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:19:06,045 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:19:06,045 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:19:06,045 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:19:06,045 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 06:19:06,077 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-24 06:19:06,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 544 transitions, 1200 flow [2023-08-24 06:19:08,394 INFO L124 PetriNetUnfolderBase]: 2647/10420 cut-off events. [2023-08-24 06:19:08,395 INFO L125 PetriNetUnfolderBase]: For 2144/2159 co-relation queries the response was YES. [2023-08-24 06:19:08,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12585 conditions, 10420 events. 2647/10420 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 94493 event pairs, 381 based on Foata normal form. 0/9024 useless extension candidates. Maximal degree in co-relation 6546. Up to 1024 conditions per place. [2023-08-24 06:19:08,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 445 places, 544 transitions, 1200 flow [2023-08-24 06:19:08,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 544 transitions, 1200 flow [2023-08-24 06:19:08,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:19:08,699 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 445 places, 544 transitions, 1200 flow [2023-08-24 06:19:08,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 445 places, 544 transitions, 1200 flow [2023-08-24 06:19:08,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 544 transitions, 1200 flow [2023-08-24 06:19:10,793 INFO L124 PetriNetUnfolderBase]: 2647/10420 cut-off events. [2023-08-24 06:19:10,793 INFO L125 PetriNetUnfolderBase]: For 2144/2159 co-relation queries the response was YES. [2023-08-24 06:19:10,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12585 conditions, 10420 events. 2647/10420 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 94493 event pairs, 381 based on Foata normal form. 0/9024 useless extension candidates. Maximal degree in co-relation 6546. Up to 1024 conditions per place. [2023-08-24 06:19:11,606 INFO L119 LiptonReduction]: Number of co-enabled transitions 219456 [2023-08-24 06:19:16,104 INFO L134 LiptonReduction]: Checked pairs total: 492326 [2023-08-24 06:19:16,104 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-08-24 06:19:16,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:19:16,106 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7bc3056c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:19:16,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:19:16,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:19:16,130 INFO L124 PetriNetUnfolderBase]: 137/490 cut-off events. [2023-08-24 06:19:16,130 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-08-24 06:19:16,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:19:16,130 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 06:19:16,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:19:16,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:19:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1663195522, now seen corresponding path program 1 times [2023-08-24 06:19:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:19:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360882213] [2023-08-24 06:19:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:19:16,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:19:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:16,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:19:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:16,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:19:16,167 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:19:16,167 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:19:16,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:19:16,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:19:16,167 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:19:16,168 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:19:16,168 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:19:16,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 06:19:16,228 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-24 06:19:16,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 658 transitions, 1466 flow [2023-08-24 06:19:26,996 INFO L124 PetriNetUnfolderBase]: 11762/39338 cut-off events. [2023-08-24 06:19:26,996 INFO L125 PetriNetUnfolderBase]: For 10450/10480 co-relation queries the response was YES. [2023-08-24 06:19:28,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49764 conditions, 39338 events. 11762/39338 cut-off events. For 10450/10480 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 436442 event pairs, 2852 based on Foata normal form. 0/34703 useless extension candidates. Maximal degree in co-relation 24722. Up to 5120 conditions per place. [2023-08-24 06:19:28,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 658 transitions, 1466 flow [2023-08-24 06:19:28,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 658 transitions, 1466 flow [2023-08-24 06:19:28,983 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:19:28,984 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 535 places, 658 transitions, 1466 flow [2023-08-24 06:19:28,984 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 535 places, 658 transitions, 1466 flow [2023-08-24 06:19:28,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 658 transitions, 1466 flow [2023-08-24 06:19:39,449 INFO L124 PetriNetUnfolderBase]: 11762/39338 cut-off events. [2023-08-24 06:19:39,450 INFO L125 PetriNetUnfolderBase]: For 10450/10480 co-relation queries the response was YES. [2023-08-24 06:19:40,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49764 conditions, 39338 events. 11762/39338 cut-off events. For 10450/10480 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 436442 event pairs, 2852 based on Foata normal form. 0/34703 useless extension candidates. Maximal degree in co-relation 24722. Up to 5120 conditions per place. [2023-08-24 06:19:43,566 INFO L119 LiptonReduction]: Number of co-enabled transitions 338040 [2023-08-24 06:19:48,338 INFO L134 LiptonReduction]: Checked pairs total: 793723 [2023-08-24 06:19:48,338 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-08-24 06:19:48,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:19:48,341 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;@7bc3056c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:19:48,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:19:48,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:19:48,388 INFO L124 PetriNetUnfolderBase]: 243/829 cut-off events. [2023-08-24 06:19:48,388 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2023-08-24 06:19:48,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:19:48,388 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:19:48,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:19:48,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:19:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1252846939, now seen corresponding path program 1 times [2023-08-24 06:19:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:19:48,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676256728] [2023-08-24 06:19:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:19:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:19:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:48,414 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:19:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:19:48,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:19:48,451 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:19:48,451 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:19:48,451 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:19:48,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:19:48,451 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:19:48,452 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:19:48,452 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:19:48,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 06:19:48,491 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-24 06:19:48,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 625 places, 772 transitions, 1736 flow [2023-08-24 06:20:45,752 INFO L124 PetriNetUnfolderBase]: 53929/159016 cut-off events. [2023-08-24 06:20:45,753 INFO L125 PetriNetUnfolderBase]: For 49552/49594 co-relation queries the response was YES. [2023-08-24 06:20:58,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208445 conditions, 159016 events. 53929/159016 cut-off events. For 49552/49594 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 2082887 event pairs, 22897 based on Foata normal form. 0/141896 useless extension candidates. Maximal degree in co-relation 101403. Up to 24576 conditions per place. [2023-08-24 06:20:58,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 625 places, 772 transitions, 1736 flow [2023-08-24 06:21:03,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 625 places, 772 transitions, 1736 flow [2023-08-24 06:21:03,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:21:03,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 625 places, 772 transitions, 1736 flow [2023-08-24 06:21:03,321 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 625 places, 772 transitions, 1736 flow [2023-08-24 06:21:03,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 625 places, 772 transitions, 1736 flow [2023-08-24 06:21:55,981 INFO L124 PetriNetUnfolderBase]: 53929/159016 cut-off events. [2023-08-24 06:21:55,982 INFO L125 PetriNetUnfolderBase]: For 49552/49594 co-relation queries the response was YES. [2023-08-24 06:22:08,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208445 conditions, 159016 events. 53929/159016 cut-off events. For 49552/49594 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 2082887 event pairs, 22897 based on Foata normal form. 0/141896 useless extension candidates. Maximal degree in co-relation 101403. Up to 24576 conditions per place. [2023-08-24 06:22:26,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 482112 [2023-08-24 06:22:32,269 INFO L134 LiptonReduction]: Checked pairs total: 1139708 [2023-08-24 06:22:32,269 INFO L136 LiptonReduction]: Total number of compositions: 491 [2023-08-24 06:22:32,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:22:32,271 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;@7bc3056c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:22:32,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:22:32,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:22:32,363 INFO L124 PetriNetUnfolderBase]: 394/1286 cut-off events. [2023-08-24 06:22:32,363 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2023-08-24 06:22:32,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:22:32,363 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:22:32,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:22:32,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:22:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash -12394282, now seen corresponding path program 1 times [2023-08-24 06:22:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:22:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436837036] [2023-08-24 06:22:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:22:32,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:22:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:22:32,393 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:22:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:22:32,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:22:32,430 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:22:32,430 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 06:22:32,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:22:32,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:22:32,430 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:22:32,431 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-24 06:22:32,431 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:22:32,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 06:22:32,474 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-08-24 06:22:32,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 715 places, 886 transitions, 2010 flow