/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_07-glob_fld_rc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:17:43,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:17:43,622 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 [2023-08-25 17:17:43,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:17:43,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:17:43,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:17:43,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:17:43,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:17:43,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:17:43,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:17:43,654 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:17:43,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:17:43,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:17:43,655 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:17:43,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:17:43,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:17:43,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:17:43,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:17:43,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:17:43,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:17:43,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:17:43,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:17:43,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:17:43,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:17:43,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:17:43,658 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:17:43,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:17:43,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:17:43,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:17:43,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:17:43,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:17:43,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:17:43,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:17:43,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:17:43,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:17:43,660 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:17:43,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:17:43,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:17:43,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:17:43,907 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:17:43,908 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:17:43,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_07-glob_fld_rc.i [2023-08-25 17:17:44,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:17:45,081 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:17:45,081 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_07-glob_fld_rc.i [2023-08-25 17:17:45,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ac8e7b0/958c0a18ab304904bc6b4c56e8d50a2b/FLAGd98c66128 [2023-08-25 17:17:45,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ac8e7b0/958c0a18ab304904bc6b4c56e8d50a2b [2023-08-25 17:17:45,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:17:45,099 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:17:45,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:17:45,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:17:45,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:17:45,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58366900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45, skipping insertion in model container [2023-08-25 17:17:45,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,135 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:17:45,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:17:45,331 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:17:45,355 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:17:45,357 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:17:45,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:17:45,408 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:17:45,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45 WrapperNode [2023-08-25 17:17:45,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:17:45,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:17:45,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:17:45,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:17:45,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,453 INFO L138 Inliner]: procedures = 161, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2023-08-25 17:17:45,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:17:45,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:17:45,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:17:45,455 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:17:45,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:17:45,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:17:45,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:17:45,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:17:45,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (1/1) ... [2023-08-25 17:17:45,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:17:45,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:17:45,509 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) [2023-08-25 17:17:45,525 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 [2023-08-25 17:17:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:17:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:17:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:17:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:17:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 17:17:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 17:17:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:17:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 17:17:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:17:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:17:45,540 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 17:17:45,648 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:17:45,649 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:17:45,795 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:17:45,800 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:17:45,800 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-25 17:17:45,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:17:45 BoogieIcfgContainer [2023-08-25 17:17:45,801 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:17:45,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:17:45,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:17:45,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:17:45,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:17:45" (1/3) ... [2023-08-25 17:17:45,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adef0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:17:45, skipping insertion in model container [2023-08-25 17:17:45,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:45" (2/3) ... [2023-08-25 17:17:45,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adef0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:17:45, skipping insertion in model container [2023-08-25 17:17:45,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:17:45" (3/3) ... [2023-08-25 17:17:45,809 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_07-glob_fld_rc.i [2023-08-25 17:17:45,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:17:45,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-25 17:17:45,822 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:17:45,879 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 17:17:45,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 63 transitions, 131 flow [2023-08-25 17:17:45,943 INFO L124 PetriNetUnfolderBase]: 0/62 cut-off events. [2023-08-25 17:17:45,944 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:45,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-25 17:17:45,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 63 transitions, 131 flow [2023-08-25 17:17:45,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 127 flow [2023-08-25 17:17:45,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:17:45,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 62 transitions, 127 flow [2023-08-25 17:17:45,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 62 transitions, 127 flow [2023-08-25 17:17:45,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 62 transitions, 127 flow [2023-08-25 17:17:45,992 INFO L124 PetriNetUnfolderBase]: 0/62 cut-off events. [2023-08-25 17:17:45,992 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-25 17:17:45,994 INFO L119 LiptonReduction]: Number of co-enabled transitions 1144 [2023-08-25 17:17:46,857 INFO L134 LiptonReduction]: Checked pairs total: 4692 [2023-08-25 17:17:46,857 INFO L136 LiptonReduction]: Total number of compositions: 32 [2023-08-25 17:17:46,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 17:17:46,875 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@480cc6c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:17:46,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-25 17:17:46,884 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:17:46,884 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-25 17:17:46,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:46,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:46,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:46,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:46,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:46,889 INFO L85 PathProgramCache]: Analyzing trace with hash -46291338, now seen corresponding path program 1 times [2023-08-25 17:17:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936886792] [2023-08-25 17:17:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:46,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:47,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:47,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936886792] [2023-08-25 17:17:47,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936886792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:47,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:17:47,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:17:47,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075238702] [2023-08-25 17:17:47,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:47,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:17:47,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:47,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:17:47,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:17:47,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 95 [2023-08-25 17:17:47,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 63 flow. Second operand has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:47,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:47,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 95 [2023-08-25 17:17:47,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:47,669 INFO L124 PetriNetUnfolderBase]: 331/714 cut-off events. [2023-08-25 17:17:47,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:47,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 714 events. 331/714 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3615 event pairs, 77 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 1424. Up to 287 conditions per place. [2023-08-25 17:17:47,681 INFO L140 encePairwiseOnDemand]: 73/95 looper letters, 98 selfloop transitions, 42 changer transitions 0/140 dead transitions. [2023-08-25 17:17:47,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 140 transitions, 563 flow [2023-08-25 17:17:47,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:17:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:17:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 328 transitions. [2023-08-25 17:17:47,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5754385964912281 [2023-08-25 17:17:47,694 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 328 transitions. [2023-08-25 17:17:47,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 328 transitions. [2023-08-25 17:17:47,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:47,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 328 transitions. [2023-08-25 17:17:47,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:47,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:47,706 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:47,708 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 63 flow. Second operand 6 states and 328 transitions. [2023-08-25 17:17:47,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 140 transitions, 563 flow [2023-08-25 17:17:47,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 140 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:17:47,712 INFO L231 Difference]: Finished difference. Result has 43 places, 76 transitions, 378 flow [2023-08-25 17:17:47,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=43, PETRI_TRANSITIONS=76} [2023-08-25 17:17:47,715 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-25 17:17:47,716 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 76 transitions, 378 flow [2023-08-25 17:17:47,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:47,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:47,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:47,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:17:47,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:47,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:47,722 INFO L85 PathProgramCache]: Analyzing trace with hash 779321685, now seen corresponding path program 1 times [2023-08-25 17:17:47,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:47,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529710256] [2023-08-25 17:17:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:47,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:47,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:47,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529710256] [2023-08-25 17:17:47,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529710256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:47,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:17:47,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:17:47,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360480070] [2023-08-25 17:17:47,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:47,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:17:47,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:47,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:17:47,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:17:47,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 95 [2023-08-25 17:17:47,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 76 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:47,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:47,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 95 [2023-08-25 17:17:47,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:48,107 INFO L124 PetriNetUnfolderBase]: 419/901 cut-off events. [2023-08-25 17:17:48,108 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2023-08-25 17:17:48,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 901 events. 419/901 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4743 event pairs, 129 based on Foata normal form. 23/924 useless extension candidates. Maximal degree in co-relation 2821. Up to 656 conditions per place. [2023-08-25 17:17:48,125 INFO L140 encePairwiseOnDemand]: 79/95 looper letters, 110 selfloop transitions, 46 changer transitions 3/159 dead transitions. [2023-08-25 17:17:48,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 159 transitions, 1048 flow [2023-08-25 17:17:48,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:17:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:17:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 277 transitions. [2023-08-25 17:17:48,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48596491228070177 [2023-08-25 17:17:48,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 277 transitions. [2023-08-25 17:17:48,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 277 transitions. [2023-08-25 17:17:48,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:48,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 277 transitions. [2023-08-25 17:17:48,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:48,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:48,128 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:48,129 INFO L175 Difference]: Start difference. First operand has 43 places, 76 transitions, 378 flow. Second operand 6 states and 277 transitions. [2023-08-25 17:17:48,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 159 transitions, 1048 flow [2023-08-25 17:17:48,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 159 transitions, 1048 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 17:17:48,134 INFO L231 Difference]: Finished difference. Result has 52 places, 119 transitions, 801 flow [2023-08-25 17:17:48,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=801, PETRI_PLACES=52, PETRI_TRANSITIONS=119} [2023-08-25 17:17:48,134 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-08-25 17:17:48,134 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 119 transitions, 801 flow [2023-08-25 17:17:48,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:48,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:48,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:48,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 17:17:48,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:48,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:48,135 INFO L85 PathProgramCache]: Analyzing trace with hash 86570219, now seen corresponding path program 1 times [2023-08-25 17:17:48,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:48,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667399125] [2023-08-25 17:17:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:48,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:17:48,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:48,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667399125] [2023-08-25 17:17:48,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667399125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:48,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:17:48,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:17:48,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976461338] [2023-08-25 17:17:48,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:48,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:17:48,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:48,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:17:48,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:17:48,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 95 [2023-08-25 17:17:48,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 119 transitions, 801 flow. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:48,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:48,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 95 [2023-08-25 17:17:48,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:48,513 INFO L124 PetriNetUnfolderBase]: 476/1032 cut-off events. [2023-08-25 17:17:48,513 INFO L125 PetriNetUnfolderBase]: For 1516/1516 co-relation queries the response was YES. [2023-08-25 17:17:48,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 1032 events. 476/1032 cut-off events. For 1516/1516 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5645 event pairs, 137 based on Foata normal form. 23/1055 useless extension candidates. Maximal degree in co-relation 4010. Up to 777 conditions per place. [2023-08-25 17:17:48,520 INFO L140 encePairwiseOnDemand]: 79/95 looper letters, 136 selfloop transitions, 49 changer transitions 16/201 dead transitions. [2023-08-25 17:17:48,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 201 transitions, 1647 flow [2023-08-25 17:17:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:17:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:17:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2023-08-25 17:17:48,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47543859649122805 [2023-08-25 17:17:48,521 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 271 transitions. [2023-08-25 17:17:48,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 271 transitions. [2023-08-25 17:17:48,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:48,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 271 transitions. [2023-08-25 17:17:48,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:48,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:48,523 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:48,523 INFO L175 Difference]: Start difference. First operand has 52 places, 119 transitions, 801 flow. Second operand 6 states and 271 transitions. [2023-08-25 17:17:48,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 201 transitions, 1647 flow [2023-08-25 17:17:48,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 201 transitions, 1613 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-08-25 17:17:48,533 INFO L231 Difference]: Finished difference. Result has 61 places, 148 transitions, 1152 flow [2023-08-25 17:17:48,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1152, PETRI_PLACES=61, PETRI_TRANSITIONS=148} [2023-08-25 17:17:48,534 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2023-08-25 17:17:48,534 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 148 transitions, 1152 flow [2023-08-25 17:17:48,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:17:48,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:48,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:48,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 17:17:48,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:17:48,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:48,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2051467826, now seen corresponding path program 1 times [2023-08-25 17:17:48,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:48,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936356367] [2023-08-25 17:17:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:48,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:17:48,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:17:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:17:48,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:17:48,586 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:17:48,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-25 17:17:48,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-25 17:17:48,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-25 17:17:48,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-08-25 17:17:48,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-25 17:17:48,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-25 17:17:48,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-25 17:17:48,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 17:17:48,589 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-25 17:17:48,593 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 17:17:48,593 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 17:17:48,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 05:17:48 BasicIcfg [2023-08-25 17:17:48,609 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 17:17:48,610 INFO L158 Benchmark]: Toolchain (without parser) took 3510.34ms. Allocated memory was 385.9MB in the beginning and 463.5MB in the end (delta: 77.6MB). Free memory was 360.4MB in the beginning and 359.6MB in the end (delta: 771.4kB). Peak memory consumption was 77.2MB. Max. memory is 16.0GB. [2023-08-25 17:17:48,610 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 385.9MB. Free memory was 363.3MB in the beginning and 363.1MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:17:48,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.67ms. Allocated memory is still 385.9MB. Free memory was 360.4MB in the beginning and 340.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 17:17:48,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.19ms. Allocated memory is still 385.9MB. Free memory was 340.5MB in the beginning and 338.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:17:48,611 INFO L158 Benchmark]: Boogie Preprocessor took 30.89ms. Allocated memory is still 385.9MB. Free memory was 338.5MB in the beginning and 337.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:17:48,611 INFO L158 Benchmark]: RCFGBuilder took 315.12ms. Allocated memory is still 385.9MB. Free memory was 337.3MB in the beginning and 323.5MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 17:17:48,611 INFO L158 Benchmark]: TraceAbstraction took 2806.79ms. Allocated memory was 385.9MB in the beginning and 463.5MB in the end (delta: 77.6MB). Free memory was 322.6MB in the beginning and 359.6MB in the end (delta: -37.0MB). Peak memory consumption was 39.4MB. Max. memory is 16.0GB. [2023-08-25 17:17:48,612 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 385.9MB. Free memory was 363.3MB in the beginning and 363.1MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 308.67ms. Allocated memory is still 385.9MB. Free memory was 360.4MB in the beginning and 340.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.19ms. Allocated memory is still 385.9MB. Free memory was 340.5MB in the beginning and 338.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.89ms. Allocated memory is still 385.9MB. Free memory was 338.5MB in the beginning and 337.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 315.12ms. Allocated memory is still 385.9MB. Free memory was 337.3MB in the beginning and 323.5MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2806.79ms. Allocated memory was 385.9MB in the beginning and 463.5MB in the end (delta: 77.6MB). Free memory was 322.6MB in the beginning and 359.6MB in the end (delta: -37.0MB). Peak memory consumption was 39.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 66 PlacesBefore, 34 PlacesAfterwards, 62 TransitionsBefore, 30 TransitionsAfterwards, 1144 CoEnabledTransitionPairs, 4 FixpointIterations, 12 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 32 TotalNumberOfCompositions, 4692 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 893, independent: 639, independent conditional: 0, independent unconditional: 639, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 451, independent: 414, independent conditional: 0, independent unconditional: 414, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 893, independent: 225, independent conditional: 0, independent unconditional: 225, dependent: 217, dependent conditional: 0, dependent unconditional: 217, unknown: 451, unknown conditional: 0, unknown unconditional: 451] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 690]: Data race detected Data race detected The following path leads to a data race: [L679-L682] 0 struct { int x; int y; } data; [L688] 0 pthread_t id; [L689] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, data={1:0}, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L684] EXPR 1 data.x VAL [arg={0:0}, arg={0:0}, data.x=0, data={1:0}] [L690] EXPR 0 data.x VAL [arg={0:0}, arg={0:0}, data.x=0, data.x=0, data={1:0}, id={5:0}] [L684] 1 data.x++ VAL [arg={0:0}, arg={0:0}, data.x=0, data={1:0}] [L690] 0 data.x++ VAL [arg={0:0}, arg={0:0}, data.x=0, data.x=0, data={1:0}, id={5:0}] [L684] 1 data.x++ VAL [arg={0:0}, arg={0:0}, data.x=0, data={1:0}] [L690] 0 data.x++ VAL [arg={0:0}, arg={0:0}, data.x=0, data.x=0, data={1:0}, id={5:0}] [L684] 1 data.x++ VAL [arg={0:0}, arg={0:0}, data.x++=0, data.x=0, data={1:0}] [L690] 0 data.x++ VAL [arg={0:0}, arg={0:0}, data.x++=0, data.x=0, data.x=0, data={1:0}, id={5:0}] [L684] 1 data.x++ VAL [arg={0:0}, arg={0:0}, data.x++=0, data.x++=9, data.x=0, data={1:0}] [L690] 0 data.x++ VAL [arg={0:0}, arg={0:0}, data.x++=0, data.x++=9, data.x=0, data.x=0, data={1:0}, id={5:0}] Now there is a data race (on the heap) between C: data.x++ [684] and C: data.x++ [690] - UnprovableResult [Line: 690]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 689]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 684]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 684]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 88 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 675 IncrementalHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 44 mSDtfsCounter, 675 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1152occurred in iteration=3, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-25 17:17:48,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...