/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_08-glob_fld_2_rc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:17:45,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:17:45,588 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 17:17:45,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:17:45,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:17:45,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:17:45,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:17:45,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:17:45,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:17:45,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:17:45,632 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:17:45,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:17:45,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:17:45,633 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:17:45,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:17:45,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:17:45,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:17:45,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:17:45,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:17:45,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:17:45,635 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:17:45,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:17:45,636 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:17:45,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:17:45,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:17:45,637 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:17:45,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:17:45,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:17:45,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:17:45,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:17:45,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:17:45,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:17:45,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:17:45,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:17:45,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:17:45,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:17:45,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:17:45,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:17:45,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:17:45,987 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:17:45,988 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:17:45,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_08-glob_fld_2_rc.i [2023-08-25 17:17:47,193 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:17:47,494 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:17:47,495 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_08-glob_fld_2_rc.i [2023-08-25 17:17:47,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157473e03/7af35fb8139b449586f966724e7eb9fa/FLAGdd38b49e1 [2023-08-25 17:17:47,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157473e03/7af35fb8139b449586f966724e7eb9fa [2023-08-25 17:17:47,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:17:47,541 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:17:47,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:17:47,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:17:47,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:17:47,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:47,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b124f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47, skipping insertion in model container [2023-08-25 17:17:47,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:47,595 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:17:47,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:17:47,880 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:17:47,910 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:17:47,911 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:17:47,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:17:47,972 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:17:47,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47 WrapperNode [2023-08-25 17:17:47,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:17:47,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:17:47,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:17:47,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:17:47,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:47,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,008 INFO L138 Inliner]: procedures = 161, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2023-08-25 17:17:48,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:17:48,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:17:48,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:17:48,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:17:48,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:17:48,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:17:48,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:17:48,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:17:48,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (1/1) ... [2023-08-25 17:17:48,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:17:48,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:17:48,066 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 17:17:48,091 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 17:17:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:17:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:17:48,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:17:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:17:48,114 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 17:17:48,115 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 17:17:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:17:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 17:17:48,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:17:48,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:17:48,116 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 17:17:48,266 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:17:48,268 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:17:48,502 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:17:48,509 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:17:48,510 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-25 17:17:48,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:17:48 BoogieIcfgContainer [2023-08-25 17:17:48,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:17:48,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:17:48,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:17:48,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:17:48,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:17:47" (1/3) ... [2023-08-25 17:17:48,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26862740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:17:48, skipping insertion in model container [2023-08-25 17:17:48,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:47" (2/3) ... [2023-08-25 17:17:48,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26862740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:17:48, skipping insertion in model container [2023-08-25 17:17:48,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:17:48" (3/3) ... [2023-08-25 17:17:48,519 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_08-glob_fld_2_rc.i [2023-08-25 17:17:48,538 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:17:48,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-25 17:17:48,538 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:17:48,628 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 17:17:48,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 200 flow [2023-08-25 17:17:48,727 INFO L124 PetriNetUnfolderBase]: 0/93 cut-off events. [2023-08-25 17:17:48,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:48,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 93 events. 0/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 135 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-25 17:17:48,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 95 transitions, 200 flow [2023-08-25 17:17:48,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 93 transitions, 192 flow [2023-08-25 17:17:48,743 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:17:48,757 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 93 transitions, 192 flow [2023-08-25 17:17:48,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 93 transitions, 192 flow [2023-08-25 17:17:48,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 93 transitions, 192 flow [2023-08-25 17:17:48,815 INFO L124 PetriNetUnfolderBase]: 0/93 cut-off events. [2023-08-25 17:17:48,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:48,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 93 events. 0/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 135 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-25 17:17:48,819 INFO L119 LiptonReduction]: Number of co-enabled transitions 3696 [2023-08-25 17:17:50,453 INFO L134 LiptonReduction]: Checked pairs total: 17147 [2023-08-25 17:17:50,453 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-08-25 17:17:50,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 17:17:50,470 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;@af61e85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:17:50,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-25 17:17:50,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:17:50,474 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-25 17:17:50,474 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:17:50,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:50,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:50,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2023-08-25 17:17:50,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:50,479 INFO L85 PathProgramCache]: Analyzing trace with hash 199307244, now seen corresponding path program 1 times [2023-08-25 17:17:50,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:50,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538397579] [2023-08-25 17:17:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:50,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:51,014 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 17:17:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:51,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538397579] [2023-08-25 17:17:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538397579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:51,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:17:51,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:17:51,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738525900] [2023-08-25 17:17:51,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:51,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:17:51,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:51,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:17:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:17:51,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 142 [2023-08-25 17:17:51,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 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 17:17:51,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:51,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 142 [2023-08-25 17:17:51,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:52,777 INFO L124 PetriNetUnfolderBase]: 10325/16084 cut-off events. [2023-08-25 17:17:52,777 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-25 17:17:52,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32202 conditions, 16084 events. 10325/16084 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 100502 event pairs, 3227 based on Foata normal form. 0/13788 useless extension candidates. Maximal degree in co-relation 32192. Up to 6365 conditions per place. [2023-08-25 17:17:52,884 INFO L140 encePairwiseOnDemand]: 120/142 looper letters, 178 selfloop transitions, 42 changer transitions 0/220 dead transitions. [2023-08-25 17:17:52,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 220 transitions, 898 flow [2023-08-25 17:17:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:17:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:17:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 510 transitions. [2023-08-25 17:17:52,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5985915492957746 [2023-08-25 17:17:52,898 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 510 transitions. [2023-08-25 17:17:52,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 510 transitions. [2023-08-25 17:17:52,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:52,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 510 transitions. [2023-08-25 17:17:52,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 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 17:17:52,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:17:52,911 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:17:52,913 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 98 flow. Second operand 6 states and 510 transitions. [2023-08-25 17:17:52,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 220 transitions, 898 flow [2023-08-25 17:17:52,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 220 transitions, 892 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 17:17:52,921 INFO L231 Difference]: Finished difference. Result has 61 places, 92 transitions, 412 flow [2023-08-25 17:17:52,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=412, PETRI_PLACES=61, PETRI_TRANSITIONS=92} [2023-08-25 17:17:52,925 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-08-25 17:17:52,926 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 92 transitions, 412 flow [2023-08-25 17:17:52,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 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 17:17:52,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:52,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:52,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:17:52,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2023-08-25 17:17:52,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:52,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2055809289, now seen corresponding path program 1 times [2023-08-25 17:17:52,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:52,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120233729] [2023-08-25 17:17:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:52,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:53,162 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 17:17:53,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:53,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120233729] [2023-08-25 17:17:53,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120233729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:53,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:17:53,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:17:53,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893790190] [2023-08-25 17:17:53,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:53,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:17:53,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:17:53,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:17:53,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 142 [2023-08-25 17:17:53,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 92 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 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 17:17:53,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:53,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 142 [2023-08-25 17:17:53,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:54,721 INFO L124 PetriNetUnfolderBase]: 9613/14990 cut-off events. [2023-08-25 17:17:54,721 INFO L125 PetriNetUnfolderBase]: For 11778/11778 co-relation queries the response was YES. [2023-08-25 17:17:54,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41417 conditions, 14990 events. 9613/14990 cut-off events. For 11778/11778 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 93738 event pairs, 4061 based on Foata normal form. 0/14608 useless extension candidates. Maximal degree in co-relation 41404. Up to 8427 conditions per place. [2023-08-25 17:17:54,803 INFO L140 encePairwiseOnDemand]: 136/142 looper letters, 382 selfloop transitions, 5 changer transitions 0/387 dead transitions. [2023-08-25 17:17:54,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 387 transitions, 2672 flow [2023-08-25 17:17:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:17:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:17:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 446 transitions. [2023-08-25 17:17:54,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234741784037559 [2023-08-25 17:17:54,807 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 446 transitions. [2023-08-25 17:17:54,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 446 transitions. [2023-08-25 17:17:54,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:54,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 446 transitions. [2023-08-25 17:17:54,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 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 17:17:54,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:17:54,813 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:17:54,813 INFO L175 Difference]: Start difference. First operand has 61 places, 92 transitions, 412 flow. Second operand 6 states and 446 transitions. [2023-08-25 17:17:54,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 387 transitions, 2672 flow [2023-08-25 17:17:54,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 387 transitions, 2672 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 17:17:54,831 INFO L231 Difference]: Finished difference. Result has 65 places, 91 transitions, 420 flow [2023-08-25 17:17:54,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=420, PETRI_PLACES=65, PETRI_TRANSITIONS=91} [2023-08-25 17:17:54,832 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-08-25 17:17:54,833 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 91 transitions, 420 flow [2023-08-25 17:17:54,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 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 17:17:54,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:54,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:54,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 17:17:54,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2023-08-25 17:17:54,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1810622908, now seen corresponding path program 1 times [2023-08-25 17:17:54,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:54,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222670757] [2023-08-25 17:17:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:54,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:55,097 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 17:17:55,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222670757] [2023-08-25 17:17:55,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222670757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:55,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:17:55,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:17:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306996473] [2023-08-25 17:17:55,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:55,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:17:55,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:17:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:17:55,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 142 [2023-08-25 17:17:55,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 91 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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 17:17:55,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:55,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 142 [2023-08-25 17:17:55,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:56,716 INFO L124 PetriNetUnfolderBase]: 12130/18891 cut-off events. [2023-08-25 17:17:56,716 INFO L125 PetriNetUnfolderBase]: For 11932/11932 co-relation queries the response was YES. [2023-08-25 17:17:56,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54577 conditions, 18891 events. 12130/18891 cut-off events. For 11932/11932 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 118325 event pairs, 6190 based on Foata normal form. 324/18734 useless extension candidates. Maximal degree in co-relation 54563. Up to 13560 conditions per place. [2023-08-25 17:17:56,844 INFO L140 encePairwiseOnDemand]: 126/142 looper letters, 188 selfloop transitions, 46 changer transitions 0/234 dead transitions. [2023-08-25 17:17:56,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 234 transitions, 1408 flow [2023-08-25 17:17:56,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:17:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:17:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 454 transitions. [2023-08-25 17:17:56,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328638497652582 [2023-08-25 17:17:56,846 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 454 transitions. [2023-08-25 17:17:56,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 454 transitions. [2023-08-25 17:17:56,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:56,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 454 transitions. [2023-08-25 17:17:56,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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 17:17:56,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:17:56,850 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:17:56,850 INFO L175 Difference]: Start difference. First operand has 65 places, 91 transitions, 420 flow. Second operand 6 states and 454 transitions. [2023-08-25 17:17:56,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 234 transitions, 1408 flow [2023-08-25 17:17:56,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 234 transitions, 1358 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 17:17:56,861 INFO L231 Difference]: Finished difference. Result has 69 places, 136 transitions, 843 flow [2023-08-25 17:17:56,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=843, PETRI_PLACES=69, PETRI_TRANSITIONS=136} [2023-08-25 17:17:56,863 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2023-08-25 17:17:56,863 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 136 transitions, 843 flow [2023-08-25 17:17:56,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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 17:17:56,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:56,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:56,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 17:17:56,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2023-08-25 17:17:56,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1635658449, now seen corresponding path program 1 times [2023-08-25 17:17:56,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281172689] [2023-08-25 17:17:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:57,135 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 17:17:57,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:57,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281172689] [2023-08-25 17:17:57,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281172689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:57,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:17:57,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:17:57,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506835672] [2023-08-25 17:17:57,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:57,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:17:57,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:17:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:17:57,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 142 [2023-08-25 17:17:57,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 136 transitions, 843 flow. Second operand has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 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 17:17:57,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:57,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 142 [2023-08-25 17:17:57,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:17:59,116 INFO L124 PetriNetUnfolderBase]: 13974/21771 cut-off events. [2023-08-25 17:17:59,116 INFO L125 PetriNetUnfolderBase]: For 25602/25602 co-relation queries the response was YES. [2023-08-25 17:17:59,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71030 conditions, 21771 events. 13974/21771 cut-off events. For 25602/25602 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 138894 event pairs, 7272 based on Foata normal form. 322/21538 useless extension candidates. Maximal degree in co-relation 71012. Up to 16316 conditions per place. [2023-08-25 17:17:59,250 INFO L140 encePairwiseOnDemand]: 126/142 looper letters, 217 selfloop transitions, 54 changer transitions 0/271 dead transitions. [2023-08-25 17:17:59,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 271 transitions, 1937 flow [2023-08-25 17:17:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:17:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:17:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 446 transitions. [2023-08-25 17:17:59,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234741784037559 [2023-08-25 17:17:59,253 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 446 transitions. [2023-08-25 17:17:59,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 446 transitions. [2023-08-25 17:17:59,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:17:59,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 446 transitions. [2023-08-25 17:17:59,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 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 17:17:59,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:17:59,258 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:17:59,258 INFO L175 Difference]: Start difference. First operand has 69 places, 136 transitions, 843 flow. Second operand 6 states and 446 transitions. [2023-08-25 17:17:59,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 271 transitions, 1937 flow [2023-08-25 17:17:59,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 271 transitions, 1903 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-08-25 17:17:59,411 INFO L231 Difference]: Finished difference. Result has 78 places, 181 transitions, 1328 flow [2023-08-25 17:17:59,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1328, PETRI_PLACES=78, PETRI_TRANSITIONS=181} [2023-08-25 17:17:59,412 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2023-08-25 17:17:59,413 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 181 transitions, 1328 flow [2023-08-25 17:17:59,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 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 17:17:59,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:17:59,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:17:59,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 17:17:59,413 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2023-08-25 17:17:59,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:17:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2084227161, now seen corresponding path program 1 times [2023-08-25 17:17:59,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:17:59,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318520613] [2023-08-25 17:17:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:17:59,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:17:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:17:59,643 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 17:17:59,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:17:59,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318520613] [2023-08-25 17:17:59,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318520613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:17:59,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:17:59,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:17:59,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126508399] [2023-08-25 17:17:59,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:17:59,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:17:59,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:17:59,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:17:59,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:17:59,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 142 [2023-08-25 17:17:59,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 181 transitions, 1328 flow. Second operand has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 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 17:17:59,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:17:59,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 142 [2023-08-25 17:17:59,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:01,593 INFO L124 PetriNetUnfolderBase]: 12938/20180 cut-off events. [2023-08-25 17:18:01,593 INFO L125 PetriNetUnfolderBase]: For 45900/45900 co-relation queries the response was YES. [2023-08-25 17:18:01,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73763 conditions, 20180 events. 12938/20180 cut-off events. For 45900/45900 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 130102 event pairs, 5833 based on Foata normal form. 0/20180 useless extension candidates. Maximal degree in co-relation 73740. Up to 13817 conditions per place. [2023-08-25 17:18:01,690 INFO L140 encePairwiseOnDemand]: 136/142 looper letters, 741 selfloop transitions, 5 changer transitions 90/836 dead transitions. [2023-08-25 17:18:01,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 836 transitions, 8158 flow [2023-08-25 17:18:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 427 transitions. [2023-08-25 17:18:01,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011737089201878 [2023-08-25 17:18:01,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 427 transitions. [2023-08-25 17:18:01,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 427 transitions. [2023-08-25 17:18:01,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:01,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 427 transitions. [2023-08-25 17:18:01,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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 17:18:01,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:18:01,699 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 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 17:18:01,699 INFO L175 Difference]: Start difference. First operand has 78 places, 181 transitions, 1328 flow. Second operand 6 states and 427 transitions. [2023-08-25 17:18:01,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 836 transitions, 8158 flow [2023-08-25 17:18:01,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 836 transitions, 7858 flow, removed 150 selfloop flow, removed 0 redundant places. [2023-08-25 17:18:01,899 INFO L231 Difference]: Finished difference. Result has 82 places, 162 transitions, 1132 flow [2023-08-25 17:18:01,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1132, PETRI_PLACES=82, PETRI_TRANSITIONS=162} [2023-08-25 17:18:01,900 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2023-08-25 17:18:01,900 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 162 transitions, 1132 flow [2023-08-25 17:18:01,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 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 17:18:01,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:01,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:01,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 17:18:01,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2023-08-25 17:18:01,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:01,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1319023645, now seen corresponding path program 1 times [2023-08-25 17:18:01,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:01,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230429721] [2023-08-25 17:18:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:01,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:18:01,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:18:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:18:01,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:18:01,945 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:18:01,946 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 10 remaining) [2023-08-25 17:18:01,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-08-25 17:18:01,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-08-25 17:18:01,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 10 remaining) [2023-08-25 17:18:01,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2023-08-25 17:18:01,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-08-25 17:18:01,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-08-25 17:18:01,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-08-25 17:18:01,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-08-25 17:18:01,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-08-25 17:18:01,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 17:18:01,949 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-25 17:18:01,954 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 17:18:01,954 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 17:18:01,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 05:18:01 BasicIcfg [2023-08-25 17:18:01,995 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 17:18:01,996 INFO L158 Benchmark]: Toolchain (without parser) took 14454.86ms. Allocated memory was 413.1MB in the beginning and 4.8GB in the end (delta: 4.4GB). Free memory was 388.3MB in the beginning and 4.2GB in the end (delta: -3.8GB). Peak memory consumption was 640.2MB. Max. memory is 16.0GB. [2023-08-25 17:18:01,996 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 413.1MB. Free memory is still 389.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:18:01,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.88ms. Allocated memory is still 413.1MB. Free memory was 388.3MB in the beginning and 370.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-25 17:18:02,002 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.10ms. Allocated memory is still 413.1MB. Free memory was 370.0MB in the beginning and 367.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:18:02,002 INFO L158 Benchmark]: Boogie Preprocessor took 22.79ms. Allocated memory is still 413.1MB. Free memory was 367.8MB in the beginning and 366.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:18:02,003 INFO L158 Benchmark]: RCFGBuilder took 479.40ms. Allocated memory is still 413.1MB. Free memory was 366.3MB in the beginning and 352.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-25 17:18:02,003 INFO L158 Benchmark]: TraceAbstraction took 13481.84ms. Allocated memory was 413.1MB in the beginning and 4.8GB in the end (delta: 4.4GB). Free memory was 351.1MB in the beginning and 4.2GB in the end (delta: -3.8GB). Peak memory consumption was 604.5MB. Max. memory is 16.0GB. [2023-08-25 17:18:02,004 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 413.1MB. Free memory is still 389.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 428.88ms. Allocated memory is still 413.1MB. Free memory was 388.3MB in the beginning and 370.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.10ms. Allocated memory is still 413.1MB. Free memory was 370.0MB in the beginning and 367.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.79ms. Allocated memory is still 413.1MB. Free memory was 367.8MB in the beginning and 366.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 479.40ms. Allocated memory is still 413.1MB. Free memory was 366.3MB in the beginning and 352.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 13481.84ms. Allocated memory was 413.1MB in the beginning and 4.8GB in the end (delta: 4.4GB). Free memory was 351.1MB in the beginning and 4.2GB in the end (delta: -3.8GB). Peak memory consumption was 604.5MB. 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: 1.7s, 100 PlacesBefore, 53 PlacesAfterwards, 93 TransitionsBefore, 46 TransitionsAfterwards, 3696 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 17147 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2645, independent: 2178, independent conditional: 0, independent unconditional: 2178, dependent: 467, dependent conditional: 0, dependent unconditional: 467, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1432, independent: 1375, independent conditional: 0, independent unconditional: 1375, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2645, independent: 803, independent conditional: 0, independent unconditional: 803, dependent: 410, dependent conditional: 0, dependent unconditional: 410, unknown: 1432, unknown conditional: 0, unknown unconditional: 1432] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 41, Negative conditional cache size: 0, Negative unconditional cache size: 41, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 684]: 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, id2; [L689] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, data={1:0}, id={5:0}, id={6:0}, 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] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, arg={0:0}, data.x=0, data={1:0}, id={5:0}, id={6:0}, pthread_create(&id2, ((void *)0), t_fun, ((void *)0))=0] [L684] 1 data.x++ VAL [arg={0:0}, arg={0:0}, data.x=0, data={1:0}] [L684] 2 data.x VAL [arg={0:0}, arg={0:0}, data.x=0, data={1:0}] [L684] 1 data.x++ VAL [arg={0:0}, arg={0:0}, data.x++=0, data.x++=9, data.x=0, data={1:0}] Now there is a data race (on the heap) between C: data.x++ [684] and C: data.x++ [684] - UnprovableResult [Line: 691]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: 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: 690]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 121 locations, 10 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: 13.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 252 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 252 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 310 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1810 IncrementalHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 310 mSolverCounterUnsat, 122 mSDtfsCounter, 1810 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1328occurred in iteration=4, InterpolantAutomatonStates: 30, 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, 1.3s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 17:18:02,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...