/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_28-funptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:33:04,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:33:04,506 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 06:33:04,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:33:04,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:33:04,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:33:04,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:33:04,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:33:04,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:33:04,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:33:04,546 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:33:04,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:33:04,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:33:04,548 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:33:04,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:33:04,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:33:04,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:33:04,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:33:04,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:33:04,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:33:04,549 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:33:04,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:33:04,550 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:33:04,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:33:04,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:33:04,551 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:33:04,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:33:04,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:33:04,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:33:04,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:33:04,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:33:04,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:33:04,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:33:04,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:33:04,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:33:04,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:33:04,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:33:04,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:33:04,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:33:04,887 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:33:04,887 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:33:04,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-24 06:33:06,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:33:06,239 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:33:06,239 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-08-24 06:33:06,254 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373c66a95/170e5b56b98348099e80e1a766f68045/FLAG2729bbe9c [2023-08-24 06:33:06,266 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373c66a95/170e5b56b98348099e80e1a766f68045 [2023-08-24 06:33:06,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:33:06,269 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:33:06,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:33:06,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:33:06,272 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:33:06,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac14d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06, skipping insertion in model container [2023-08-24 06:33:06,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,326 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:33:06,724 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_28-funptr_racefree.i[41323,41336] [2023-08-24 06:33:06,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:33:06,762 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:33:06,790 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:33:06,792 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:33:06,813 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-24 06:33:06,819 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_28-funptr_racefree.i[41323,41336] [2023-08-24 06:33:06,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:33:06,897 WARN L669 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 06:33:06,902 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:33:06,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06 WrapperNode [2023-08-24 06:33:06,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:33:06,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:33:06,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:33:06,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:33:06,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,946 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2023-08-24 06:33:06,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:33:06,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:33:06,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:33:06,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:33:06,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:33:06,993 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:33:06,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:33:06,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:33:06,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (1/1) ... [2023-08-24 06:33:06,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:33:07,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:33:07,034 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 06:33:07,059 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 06:33:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:33:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:33:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:33:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:33:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:33:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:33:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 06:33:07,074 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 06:33:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:33:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:33:07,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:33:07,075 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 06:33:07,185 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:33:07,187 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:33:07,354 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:33:07,361 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:33:07,361 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-24 06:33:07,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:33:07 BoogieIcfgContainer [2023-08-24 06:33:07,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:33:07,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:33:07,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:33:07,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:33:07,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:33:06" (1/3) ... [2023-08-24 06:33:07,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f85d127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:33:07, skipping insertion in model container [2023-08-24 06:33:07,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:33:06" (2/3) ... [2023-08-24 06:33:07,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f85d127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:33:07, skipping insertion in model container [2023-08-24 06:33:07,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:33:07" (3/3) ... [2023-08-24 06:33:07,369 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-08-24 06:33:07,385 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:33:07,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 06:33:07,386 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:33:07,478 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 06:33:07,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 121 transitions, 250 flow [2023-08-24 06:33:07,606 INFO L124 PetriNetUnfolderBase]: 17/160 cut-off events. [2023-08-24 06:33:07,606 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:33:07,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 160 events. 17/160 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 362 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-08-24 06:33:07,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 121 transitions, 250 flow [2023-08-24 06:33:07,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 116 transitions, 237 flow [2023-08-24 06:33:07,625 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:07,633 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 116 transitions, 237 flow [2023-08-24 06:33:07,635 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 116 transitions, 237 flow [2023-08-24 06:33:07,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 116 transitions, 237 flow [2023-08-24 06:33:07,678 INFO L124 PetriNetUnfolderBase]: 16/155 cut-off events. [2023-08-24 06:33:07,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:33:07,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 155 events. 16/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 349 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-08-24 06:33:07,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2023-08-24 06:33:10,551 INFO L134 LiptonReduction]: Checked pairs total: 6388 [2023-08-24 06:33:10,551 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-24 06:33:10,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:10,567 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:10,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:10,570 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:10,571 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-24 06:33:10,571 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:33:10,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:10,571 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 06:33:10,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:10,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash 582054677, now seen corresponding path program 1 times [2023-08-24 06:33:10,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:10,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077259443] [2023-08-24 06:33:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:10,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:10,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:10,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:10,822 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:10,823 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:10,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:33:10,825 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:10,831 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:10,832 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:10,833 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 06:33:10,857 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 06:33:10,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-24 06:33:10,905 INFO L124 PetriNetUnfolderBase]: 31/262 cut-off events. [2023-08-24 06:33:10,905 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:33:10,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 262 events. 31/262 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 764 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-24 06:33:10,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-08-24 06:33:10,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-08-24 06:33:10,913 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:10,913 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-24 06:33:10,913 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-24 06:33:10,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-24 06:33:10,944 INFO L124 PetriNetUnfolderBase]: 31/262 cut-off events. [2023-08-24 06:33:10,944 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:33:10,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 262 events. 31/262 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 764 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-24 06:33:10,953 INFO L119 LiptonReduction]: Number of co-enabled transitions 9864 [2023-08-24 06:33:13,769 INFO L134 LiptonReduction]: Checked pairs total: 24157 [2023-08-24 06:33:13,769 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-24 06:33:13,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:13,772 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:13,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:13,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:13,776 INFO L124 PetriNetUnfolderBase]: 6/50 cut-off events. [2023-08-24 06:33:13,776 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 06:33:13,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:13,777 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 06:33:13,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:13,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1191526466, now seen corresponding path program 1 times [2023-08-24 06:33:13,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:13,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037790204] [2023-08-24 06:33:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:13,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:13,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:13,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:13,838 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:13,838 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:13,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:33:13,838 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:13,839 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:13,840 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:13,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 06:33:13,868 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 06:33:13,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-08-24 06:33:13,919 INFO L124 PetriNetUnfolderBase]: 50/397 cut-off events. [2023-08-24 06:33:13,919 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:33:13,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 397 events. 50/397 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1370 event pairs, 1 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 270. Up to 16 conditions per place. [2023-08-24 06:33:13,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 197 transitions, 424 flow [2023-08-24 06:33:13,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 197 transitions, 424 flow [2023-08-24 06:33:13,925 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:13,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 197 transitions, 424 flow [2023-08-24 06:33:13,926 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 197 transitions, 424 flow [2023-08-24 06:33:13,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-08-24 06:33:13,967 INFO L124 PetriNetUnfolderBase]: 50/397 cut-off events. [2023-08-24 06:33:13,967 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:33:13,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 397 events. 50/397 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1370 event pairs, 1 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 270. Up to 16 conditions per place. [2023-08-24 06:33:13,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 19008 [2023-08-24 06:33:16,867 INFO L134 LiptonReduction]: Checked pairs total: 50207 [2023-08-24 06:33:16,867 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-24 06:33:16,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:16,870 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:16,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:16,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:16,876 INFO L124 PetriNetUnfolderBase]: 12/84 cut-off events. [2023-08-24 06:33:16,876 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 06:33:16,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:16,876 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 06:33:16,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:16,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:16,877 INFO L85 PathProgramCache]: Analyzing trace with hash -785461789, now seen corresponding path program 1 times [2023-08-24 06:33:16,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:16,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442147712] [2023-08-24 06:33:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:16,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:16,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:16,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:16,918 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:16,918 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:16,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:33:16,919 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:16,919 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:16,919 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:16,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 06:33:16,942 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 06:33:16,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 235 transitions, 514 flow [2023-08-24 06:33:17,013 INFO L124 PetriNetUnfolderBase]: 81/600 cut-off events. [2023-08-24 06:33:17,013 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:33:17,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 600 events. 81/600 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2390 event pairs, 6 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 417. Up to 32 conditions per place. [2023-08-24 06:33:17,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 235 transitions, 514 flow [2023-08-24 06:33:17,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 235 transitions, 514 flow [2023-08-24 06:33:17,025 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:17,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 235 transitions, 514 flow [2023-08-24 06:33:17,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 235 transitions, 514 flow [2023-08-24 06:33:17,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 235 transitions, 514 flow [2023-08-24 06:33:17,095 INFO L124 PetriNetUnfolderBase]: 81/600 cut-off events. [2023-08-24 06:33:17,096 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:33:17,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 600 events. 81/600 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2390 event pairs, 6 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 417. Up to 32 conditions per place. [2023-08-24 06:33:17,122 INFO L119 LiptonReduction]: Number of co-enabled transitions 30960 [2023-08-24 06:33:20,284 INFO L134 LiptonReduction]: Checked pairs total: 85972 [2023-08-24 06:33:20,285 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-08-24 06:33:20,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:20,287 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:20,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:20,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:20,299 INFO L124 PetriNetUnfolderBase]: 21/123 cut-off events. [2023-08-24 06:33:20,299 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:33:20,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:20,299 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:20,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:20,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:20,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1439564947, now seen corresponding path program 1 times [2023-08-24 06:33:20,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138474045] [2023-08-24 06:33:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:20,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:20,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:20,341 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:20,341 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:20,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:33:20,341 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:20,342 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:20,342 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:20,342 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 06:33:20,370 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-24 06:33:20,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 273 transitions, 606 flow [2023-08-24 06:33:20,507 INFO L124 PetriNetUnfolderBase]: 140/943 cut-off events. [2023-08-24 06:33:20,508 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:33:20,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 943 events. 140/943 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4329 event pairs, 23 based on Foata normal form. 0/813 useless extension candidates. Maximal degree in co-relation 645. Up to 80 conditions per place. [2023-08-24 06:33:20,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 273 transitions, 606 flow [2023-08-24 06:33:20,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 273 transitions, 606 flow [2023-08-24 06:33:20,532 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:20,533 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 273 transitions, 606 flow [2023-08-24 06:33:20,533 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 273 transitions, 606 flow [2023-08-24 06:33:20,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 273 transitions, 606 flow [2023-08-24 06:33:20,667 INFO L124 PetriNetUnfolderBase]: 140/943 cut-off events. [2023-08-24 06:33:20,667 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:33:20,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 943 events. 140/943 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4329 event pairs, 23 based on Foata normal form. 0/813 useless extension candidates. Maximal degree in co-relation 645. Up to 80 conditions per place. [2023-08-24 06:33:20,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 45720 [2023-08-24 06:33:23,889 INFO L134 LiptonReduction]: Checked pairs total: 145001 [2023-08-24 06:33:23,889 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-08-24 06:33:23,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:23,897 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:23,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:23,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:23,910 INFO L124 PetriNetUnfolderBase]: 34/174 cut-off events. [2023-08-24 06:33:23,911 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-24 06:33:23,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:23,911 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:23,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:23,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:23,911 INFO L85 PathProgramCache]: Analyzing trace with hash -372736632, now seen corresponding path program 1 times [2023-08-24 06:33:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540332284] [2023-08-24 06:33:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:23,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:23,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:23,993 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:23,993 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:23,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:23,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:33:23,993 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:23,994 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:23,994 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:23,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 06:33:24,029 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-24 06:33:24,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 311 transitions, 700 flow [2023-08-24 06:33:24,304 INFO L124 PetriNetUnfolderBase]: 263/1574 cut-off events. [2023-08-24 06:33:24,304 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:33:24,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 1574 events. 263/1574 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8706 event pairs, 72 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 1042. Up to 192 conditions per place. [2023-08-24 06:33:24,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 311 transitions, 700 flow [2023-08-24 06:33:24,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 311 transitions, 700 flow [2023-08-24 06:33:24,359 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:24,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 311 transitions, 700 flow [2023-08-24 06:33:24,360 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 311 transitions, 700 flow [2023-08-24 06:33:24,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 311 transitions, 700 flow [2023-08-24 06:33:24,672 INFO L124 PetriNetUnfolderBase]: 263/1574 cut-off events. [2023-08-24 06:33:24,673 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:33:24,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 1574 events. 263/1574 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8706 event pairs, 72 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 1042. Up to 192 conditions per place. [2023-08-24 06:33:24,752 INFO L119 LiptonReduction]: Number of co-enabled transitions 63288 [2023-08-24 06:33:28,163 INFO L134 LiptonReduction]: Checked pairs total: 206882 [2023-08-24 06:33:28,163 INFO L136 LiptonReduction]: Total number of compositions: 196 [2023-08-24 06:33:28,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:28,165 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:28,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:28,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:28,182 INFO L124 PetriNetUnfolderBase]: 45/225 cut-off events. [2023-08-24 06:33:28,182 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-24 06:33:28,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:28,183 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:28,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:28,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash -996235768, now seen corresponding path program 1 times [2023-08-24 06:33:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:28,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295949229] [2023-08-24 06:33:28,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:28,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:28,202 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:28,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:28,220 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:28,220 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:28,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:33:28,220 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:28,221 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:28,221 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:28,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 06:33:28,247 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-24 06:33:28,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 349 transitions, 796 flow [2023-08-24 06:33:28,830 INFO L124 PetriNetUnfolderBase]: 530/2797 cut-off events. [2023-08-24 06:33:28,830 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:33:28,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3295 conditions, 2797 events. 530/2797 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18740 event pairs, 201 based on Foata normal form. 0/2451 useless extension candidates. Maximal degree in co-relation 1792. Up to 448 conditions per place. [2023-08-24 06:33:28,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 349 transitions, 796 flow [2023-08-24 06:33:28,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 349 transitions, 796 flow [2023-08-24 06:33:28,918 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:28,918 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 349 transitions, 796 flow [2023-08-24 06:33:28,918 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 349 transitions, 796 flow [2023-08-24 06:33:28,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 349 transitions, 796 flow [2023-08-24 06:33:29,385 INFO L124 PetriNetUnfolderBase]: 530/2797 cut-off events. [2023-08-24 06:33:29,386 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:33:29,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3295 conditions, 2797 events. 530/2797 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18740 event pairs, 201 based on Foata normal form. 0/2451 useless extension candidates. Maximal degree in co-relation 1792. Up to 448 conditions per place. [2023-08-24 06:33:29,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 83664 [2023-08-24 06:33:32,808 INFO L134 LiptonReduction]: Checked pairs total: 250292 [2023-08-24 06:33:32,808 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-08-24 06:33:32,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:32,810 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:32,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:32,833 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:32,833 INFO L124 PetriNetUnfolderBase]: 60/287 cut-off events. [2023-08-24 06:33:32,833 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-08-24 06:33:32,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:32,833 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:32,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:32,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1331467910, now seen corresponding path program 1 times [2023-08-24 06:33:32,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:32,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246675017] [2023-08-24 06:33:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:32,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:32,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:32,870 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:32,870 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:32,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 06:33:32,870 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:32,871 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:32,871 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:32,871 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-24 06:33:32,901 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-24 06:33:32,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 387 transitions, 894 flow [2023-08-24 06:33:33,978 INFO L124 PetriNetUnfolderBase]: 1117/5236 cut-off events. [2023-08-24 06:33:33,979 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:33:34,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 5236 events. 1117/5236 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 41651 event pairs, 522 based on Foata normal form. 0/4622 useless extension candidates. Maximal degree in co-relation 3279. Up to 1024 conditions per place. [2023-08-24 06:33:34,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 387 transitions, 894 flow [2023-08-24 06:33:34,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 387 transitions, 894 flow [2023-08-24 06:33:34,104 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:34,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 343 places, 387 transitions, 894 flow [2023-08-24 06:33:34,104 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 343 places, 387 transitions, 894 flow [2023-08-24 06:33:34,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 387 transitions, 894 flow [2023-08-24 06:33:35,024 INFO L124 PetriNetUnfolderBase]: 1117/5236 cut-off events. [2023-08-24 06:33:35,026 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:33:35,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 5236 events. 1117/5236 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 41651 event pairs, 522 based on Foata normal form. 0/4622 useless extension candidates. Maximal degree in co-relation 3279. Up to 1024 conditions per place. [2023-08-24 06:33:35,397 INFO L119 LiptonReduction]: Number of co-enabled transitions 106848 [2023-08-24 06:33:39,032 INFO L134 LiptonReduction]: Checked pairs total: 321048 [2023-08-24 06:33:39,032 INFO L136 LiptonReduction]: Total number of compositions: 239 [2023-08-24 06:33:39,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:39,035 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:39,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:39,069 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:39,069 INFO L124 PetriNetUnfolderBase]: 67/332 cut-off events. [2023-08-24 06:33:39,069 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-08-24 06:33:39,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:39,069 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:39,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:39,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:39,070 INFO L85 PathProgramCache]: Analyzing trace with hash -528610452, now seen corresponding path program 1 times [2023-08-24 06:33:39,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:39,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006299716] [2023-08-24 06:33:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:39,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:39,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:39,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:39,133 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:39,133 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:39,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 06:33:39,134 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:39,135 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:39,135 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:39,135 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-24 06:33:39,172 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-24 06:33:39,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 425 transitions, 994 flow [2023-08-24 06:33:41,340 INFO L124 PetriNetUnfolderBase]: 2408/10171 cut-off events. [2023-08-24 06:33:41,340 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:33:41,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12548 conditions, 10171 events. 2408/10171 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 94231 event pairs, 1291 based on Foata normal form. 0/9033 useless extension candidates. Maximal degree in co-relation 6303. Up to 2304 conditions per place. [2023-08-24 06:33:41,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 425 transitions, 994 flow [2023-08-24 06:33:41,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 376 places, 425 transitions, 994 flow [2023-08-24 06:33:41,583 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:41,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 376 places, 425 transitions, 994 flow [2023-08-24 06:33:41,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 376 places, 425 transitions, 994 flow [2023-08-24 06:33:41,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 425 transitions, 994 flow [2023-08-24 06:33:43,658 INFO L124 PetriNetUnfolderBase]: 2408/10171 cut-off events. [2023-08-24 06:33:43,658 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:33:43,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12548 conditions, 10171 events. 2408/10171 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 94231 event pairs, 1291 based on Foata normal form. 0/9033 useless extension candidates. Maximal degree in co-relation 6303. Up to 2304 conditions per place. [2023-08-24 06:33:44,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 132840 [2023-08-24 06:33:48,018 INFO L134 LiptonReduction]: Checked pairs total: 408380 [2023-08-24 06:33:48,019 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-08-24 06:33:48,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:33:48,020 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:33:48,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:33:48,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:33:48,062 INFO L124 PetriNetUnfolderBase]: 97/432 cut-off events. [2023-08-24 06:33:48,062 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-08-24 06:33:48,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:33:48,063 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:33:48,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:33:48,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:33:48,063 INFO L85 PathProgramCache]: Analyzing trace with hash -396174772, now seen corresponding path program 1 times [2023-08-24 06:33:48,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:33:48,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184539427] [2023-08-24 06:33:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:33:48,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:33:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:48,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:33:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:33:48,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:33:48,105 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:33:48,105 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:33:48,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 06:33:48,105 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:33:48,106 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:33:48,106 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:33:48,106 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-24 06:33:48,146 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-24 06:33:48,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 463 transitions, 1096 flow [2023-08-24 06:33:53,025 INFO L124 PetriNetUnfolderBase]: 5235/20226 cut-off events. [2023-08-24 06:33:53,025 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:33:53,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25432 conditions, 20226 events. 5235/20226 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 210829 event pairs, 3084 based on Foata normal form. 0/18052 useless extension candidates. Maximal degree in co-relation 12528. Up to 5120 conditions per place. [2023-08-24 06:33:53,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 463 transitions, 1096 flow [2023-08-24 06:33:53,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 463 transitions, 1096 flow [2023-08-24 06:33:53,574 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:33:53,574 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 463 transitions, 1096 flow [2023-08-24 06:33:53,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 463 transitions, 1096 flow [2023-08-24 06:33:53,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 463 transitions, 1096 flow [2023-08-24 06:33:58,460 INFO L124 PetriNetUnfolderBase]: 5235/20226 cut-off events. [2023-08-24 06:33:58,460 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:33:58,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25432 conditions, 20226 events. 5235/20226 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 210829 event pairs, 3084 based on Foata normal form. 0/18052 useless extension candidates. Maximal degree in co-relation 12528. Up to 5120 conditions per place. [2023-08-24 06:33:59,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 161640 [2023-08-24 06:34:03,651 INFO L134 LiptonReduction]: Checked pairs total: 488667 [2023-08-24 06:34:03,651 INFO L136 LiptonReduction]: Total number of compositions: 282 [2023-08-24 06:34:03,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:03,653 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:03,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:03,749 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:03,749 INFO L124 PetriNetUnfolderBase]: 125/536 cut-off events. [2023-08-24 06:34:03,749 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2023-08-24 06:34:03,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:03,750 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:03,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:03,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:03,750 INFO L85 PathProgramCache]: Analyzing trace with hash -835942753, now seen corresponding path program 1 times [2023-08-24 06:34:03,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:03,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104820149] [2023-08-24 06:34:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:03,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:03,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:03,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:03,824 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:03,824 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:03,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 06:34:03,825 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:03,825 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:03,825 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:03,825 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-24 06:34:03,867 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-24 06:34:03,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 442 places, 501 transitions, 1200 flow [2023-08-24 06:34:15,597 INFO L124 PetriNetUnfolderBase]: 11390/40777 cut-off events. [2023-08-24 06:34:15,597 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:34:16,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52141 conditions, 40777 events. 11390/40777 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 474396 event pairs, 7181 based on Foata normal form. 0/36543 useless extension candidates. Maximal degree in co-relation 25410. Up to 11264 conditions per place. [2023-08-24 06:34:16,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 442 places, 501 transitions, 1200 flow [2023-08-24 06:34:17,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 442 places, 501 transitions, 1200 flow [2023-08-24 06:34:17,227 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:34:17,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 442 places, 501 transitions, 1200 flow [2023-08-24 06:34:17,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 442 places, 501 transitions, 1200 flow [2023-08-24 06:34:17,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 442 places, 501 transitions, 1200 flow [2023-08-24 06:34:27,435 INFO L124 PetriNetUnfolderBase]: 11390/40777 cut-off events. [2023-08-24 06:34:27,436 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:34:28,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52141 conditions, 40777 events. 11390/40777 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 474396 event pairs, 7181 based on Foata normal form. 0/36543 useless extension candidates. Maximal degree in co-relation 25410. Up to 11264 conditions per place. [2023-08-24 06:34:30,663 INFO L119 LiptonReduction]: Number of co-enabled transitions 193248 [2023-08-24 06:34:34,757 INFO L134 LiptonReduction]: Checked pairs total: 589509 [2023-08-24 06:34:34,758 INFO L136 LiptonReduction]: Total number of compositions: 303 [2023-08-24 06:34:34,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:34:34,759 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:34:34,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:34:34,812 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:34:34,812 INFO L124 PetriNetUnfolderBase]: 170/679 cut-off events. [2023-08-24 06:34:34,812 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2023-08-24 06:34:34,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:34:34,812 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:34:34,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:34:34,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:34:34,813 INFO L85 PathProgramCache]: Analyzing trace with hash -290795976, now seen corresponding path program 1 times [2023-08-24 06:34:34,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:34:34,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263579705] [2023-08-24 06:34:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:34:34,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:34:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:34,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:34:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:34:34,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:34:34,858 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:34:34,858 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:34:34,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 06:34:34,858 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:34:34,860 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:34:34,860 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:34:34,860 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-24 06:34:34,901 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-24 06:34:34,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 539 transitions, 1306 flow [2023-08-24 06:34:58,344 INFO L124 PetriNetUnfolderBase]: 24713/82832 cut-off events. [2023-08-24 06:34:58,344 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:35:01,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107523 conditions, 82832 events. 24713/82832 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 1054262 event pairs, 16398 based on Foata normal form. 0/74490 useless extension candidates. Maximal degree in co-relation 52117. Up to 24576 conditions per place. [2023-08-24 06:35:01,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 475 places, 539 transitions, 1306 flow [2023-08-24 06:35:03,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 539 transitions, 1306 flow [2023-08-24 06:35:03,225 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:35:03,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 475 places, 539 transitions, 1306 flow [2023-08-24 06:35:03,225 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 475 places, 539 transitions, 1306 flow [2023-08-24 06:35:03,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 539 transitions, 1306 flow [2023-08-24 06:35:27,573 INFO L124 PetriNetUnfolderBase]: 24713/82832 cut-off events. [2023-08-24 06:35:27,573 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:35:31,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107523 conditions, 82832 events. 24713/82832 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 1054262 event pairs, 16398 based on Foata normal form. 0/74490 useless extension candidates. Maximal degree in co-relation 52117. Up to 24576 conditions per place. [2023-08-24 06:35:36,132 INFO L119 LiptonReduction]: Number of co-enabled transitions 227664 [2023-08-24 06:35:40,728 INFO L134 LiptonReduction]: Checked pairs total: 796926 [2023-08-24 06:35:40,728 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-08-24 06:35:40,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:35:40,730 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;@49717b81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:35:40,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:35:40,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:35:40,801 INFO L124 PetriNetUnfolderBase]: 239/877 cut-off events. [2023-08-24 06:35:40,802 INFO L125 PetriNetUnfolderBase]: For 613/613 co-relation queries the response was YES. [2023-08-24 06:35:40,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:35:40,802 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:35:40,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:35:40,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:35:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1763238516, now seen corresponding path program 1 times [2023-08-24 06:35:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:35:40,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400983914] [2023-08-24 06:35:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:35:40,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:35:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:35:40,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:35:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:35:40,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:35:40,848 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:35:40,848 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:35:40,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 06:35:40,848 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:35:40,848 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:35:40,849 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:35:40,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-24 06:35:40,892 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-24 06:35:40,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 508 places, 577 transitions, 1414 flow [2023-08-24 06:36:39,101 INFO L124 PetriNetUnfolderBase]: 53396/168919 cut-off events. [2023-08-24 06:36:39,101 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES.