./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2833e2a982570955f6afff015381b60583cb7a937d74272f311b6e4f53384e8c --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:10:32,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:10:32,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-04-29 11:10:32,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:10:32,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:10:32,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:10:32,567 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:10:32,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:10:32,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:10:32,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:10:32,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:10:32,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:10:32,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:10:32,569 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-04-29 11:10:32,569 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:10:32,569 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:10:32,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:10:32,569 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:10:32,569 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:10:32,569 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:10:32,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:10:32,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:10:32,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:10:32,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:10:32,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:10:32,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:10:32,571 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2833e2a982570955f6afff015381b60583cb7a937d74272f311b6e4f53384e8c [2025-04-29 11:10:32,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:10:32,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:10:32,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:10:32,782 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:10:32,783 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:10:32,784 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.c [2025-04-29 11:10:34,062 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e321ee4c/224bf7847782402aa38440ee2323024a/FLAGb62aa88cd [2025-04-29 11:10:34,257 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:10:34,258 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.c [2025-04-29 11:10:34,259 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:10:34,259 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:10:34,259 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:10:34,260 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:10:34,265 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e321ee4c/224bf7847782402aa38440ee2323024a/FLAGb62aa88cd [2025-04-29 11:10:35,263 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e321ee4c/224bf7847782402aa38440ee2323024a [2025-04-29 11:10:35,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:10:35,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:10:35,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:10:35,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:10:35,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:10:35,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4da82b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35, skipping insertion in model container [2025-04-29 11:10:35,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:10:35,429 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:10:35,434 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:10:35,453 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:10:35,466 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:10:35,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35 WrapperNode [2025-04-29 11:10:35,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:10:35,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:10:35,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:10:35,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:10:35,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,487 INFO L138 Inliner]: procedures = 8, calls = 5, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-04-29 11:10:35,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:10:35,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:10:35,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:10:35,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:10:35,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,498 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:10:35,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:10:35,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:10:35,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:10:35,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (1/1) ... [2025-04-29 11:10:35,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:10:35,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:10:35,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-29 11:10:35,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-29 11:10:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:10:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:10:35,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2025-04-29 11:10:35,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2025-04-29 11:10:35,552 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 11:10:35,608 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:10:35,609 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:10:35,709 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:10:35,709 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:10:35,720 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:10:35,720 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:10:35,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:10:35 BoogieIcfgContainer [2025-04-29 11:10:35,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:10:35,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:10:35,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:10:35,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:10:35,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:10:35" (1/3) ... [2025-04-29 11:10:35,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11871dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:10:35, skipping insertion in model container [2025-04-29 11:10:35,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:10:35" (2/3) ... [2025-04-29 11:10:35,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11871dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:10:35, skipping insertion in model container [2025-04-29 11:10:35,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:10:35" (3/3) ... [2025-04-29 11:10:35,728 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.c [2025-04-29 11:10:35,737 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:10:35,739 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-2.c that has 2 procedures, 94 locations, 97 edges, 1 initial locations, 2 loop locations, and 6 error locations. [2025-04-29 11:10:35,739 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:10:35,779 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-29 11:10:35,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 203 flow [2025-04-29 11:10:35,841 INFO L116 PetriNetUnfolderBase]: 5/97 cut-off events. [2025-04-29 11:10:35,843 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-29 11:10:35,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 5/97 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2025-04-29 11:10:35,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 98 transitions, 203 flow [2025-04-29 11:10:35,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 89 transitions, 184 flow [2025-04-29 11:10:35,853 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:10:35,860 INFO L340 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6e79b8f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:10:35,860 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-04-29 11:10:35,867 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:10:35,868 INFO L116 PetriNetUnfolderBase]: 1/32 cut-off events. [2025-04-29 11:10:35,868 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:10:35,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:10:35,868 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:10:35,869 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_dataraceErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:10:35,873 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:10:35,873 INFO L85 PathProgramCache]: Analyzing trace with hash -294133790, now seen corresponding path program 1 times [2025-04-29 11:10:35,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:10:35,878 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272777172] [2025-04-29 11:10:35,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:10:35,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:10:35,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-29 11:10:35,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-29 11:10:35,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:10:35,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:10:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:10:35,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:10:35,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272777172] [2025-04-29 11:10:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272777172] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:10:35,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:10:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:10:35,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795777547] [2025-04-29 11:10:35,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:10:36,002 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:10:36,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:10:36,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:10:36,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:10:36,061 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 98 [2025-04-29 11:10:36,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2025-04-29 11:10:36,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:10:36,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 98 [2025-04-29 11:10:36,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:10:36,114 INFO L116 PetriNetUnfolderBase]: 21/188 cut-off events. [2025-04-29 11:10:36,115 INFO L117 PetriNetUnfolderBase]: For 10/13 co-relation queries the response was YES. [2025-04-29 11:10:36,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 188 events. 21/188 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 575 event pairs, 2 based on Foata normal form. 8/172 useless extension candidates. Maximal degree in co-relation 205. Up to 32 conditions per place. [2025-04-29 11:10:36,119 INFO L140 encePairwiseOnDemand]: 84/98 looper letters, 9 selfloop transitions, 6 changer transitions 13/88 dead transitions. [2025-04-29 11:10:36,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 220 flow [2025-04-29 11:10:36,122 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:10:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:10:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2025-04-29 11:10:36,133 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.8673469387755102 [2025-04-29 11:10:36,134 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 184 flow. Second operand 3 states and 255 transitions. [2025-04-29 11:10:36,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 220 flow [2025-04-29 11:10:36,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:10:36,142 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 191 flow [2025-04-29 11:10:36,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2025-04-29 11:10:36,148 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -2 predicate places. [2025-04-29 11:10:36,149 INFO L485 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 191 flow [2025-04-29 11:10:36,150 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2025-04-29 11:10:36,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:10:36,150 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:10:36,151 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:10:36,151 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:10:36,151 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:10:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1175107559, now seen corresponding path program 1 times [2025-04-29 11:10:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:10:36,152 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125263841] [2025-04-29 11:10:36,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:10:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:10:36,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-29 11:10:36,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-29 11:10:36,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:10:36,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:10:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:10:36,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:10:36,200 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125263841] [2025-04-29 11:10:36,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125263841] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:10:36,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:10:36,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:10:36,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549722787] [2025-04-29 11:10:36,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:10:36,201 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:10:36,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:10:36,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:10:36,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:10:36,233 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 98 [2025-04-29 11:10:36,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2025-04-29 11:10:36,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:10:36,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 98 [2025-04-29 11:10:36,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:10:36,280 INFO L116 PetriNetUnfolderBase]: 36/230 cut-off events. [2025-04-29 11:10:36,280 INFO L117 PetriNetUnfolderBase]: For 104/128 co-relation queries the response was YES. [2025-04-29 11:10:36,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 230 events. 36/230 cut-off events. For 104/128 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 914 event pairs, 4 based on Foata normal form. 1/199 useless extension candidates. Maximal degree in co-relation 58. Up to 56 conditions per place. [2025-04-29 11:10:36,282 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 11 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2025-04-29 11:10:36,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 247 flow [2025-04-29 11:10:36,287 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:10:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:10:36,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2025-04-29 11:10:36,288 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.8639455782312925 [2025-04-29 11:10:36,288 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 191 flow. Second operand 3 states and 254 transitions. [2025-04-29 11:10:36,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 247 flow [2025-04-29 11:10:36,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:10:36,290 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 235 flow [2025-04-29 11:10:36,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2025-04-29 11:10:36,291 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -13 predicate places. [2025-04-29 11:10:36,291 INFO L485 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 235 flow [2025-04-29 11:10:36,291 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2025-04-29 11:10:36,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:10:36,292 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:10:36,292 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:10:36,292 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:10:36,292 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:10:36,293 INFO L85 PathProgramCache]: Analyzing trace with hash -855380958, now seen corresponding path program 1 times [2025-04-29 11:10:36,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:10:36,293 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446288485] [2025-04-29 11:10:36,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:10:36,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:10:36,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-29 11:10:36,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-29 11:10:36,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:10:36,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:10:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:10:36,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:10:36,329 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446288485] [2025-04-29 11:10:36,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446288485] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:10:36,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:10:36,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:10:36,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073186587] [2025-04-29 11:10:36,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:10:36,330 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:10:36,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:10:36,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:10:36,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:10:36,357 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 98 [2025-04-29 11:10:36,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2025-04-29 11:10:36,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:10:36,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 98 [2025-04-29 11:10:36,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:10:36,402 INFO L116 PetriNetUnfolderBase]: 55/283 cut-off events. [2025-04-29 11:10:36,403 INFO L117 PetriNetUnfolderBase]: For 196/233 co-relation queries the response was YES. [2025-04-29 11:10:36,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 283 events. 55/283 cut-off events. For 196/233 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1201 event pairs, 3 based on Foata normal form. 2/252 useless extension candidates. Maximal degree in co-relation 211. Up to 75 conditions per place. [2025-04-29 11:10:36,407 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 13 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2025-04-29 11:10:36,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 85 transitions, 303 flow [2025-04-29 11:10:36,408 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:10:36,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:10:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2025-04-29 11:10:36,411 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.8469387755102041 [2025-04-29 11:10:36,411 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 235 flow. Second operand 3 states and 249 transitions. [2025-04-29 11:10:36,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 85 transitions, 303 flow [2025-04-29 11:10:36,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 85 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:10:36,416 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 289 flow [2025-04-29 11:10:36,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2025-04-29 11:10:36,417 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -11 predicate places. [2025-04-29 11:10:36,417 INFO L485 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 289 flow [2025-04-29 11:10:36,417 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2025-04-29 11:10:36,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:10:36,418 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:10:36,418 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:10:36,418 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_dataraceErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-04-29 11:10:36,418 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:10:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash -261181420, now seen corresponding path program 1 times [2025-04-29 11:10:36,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:10:36,419 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972486270] [2025-04-29 11:10:36,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:10:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:10:36,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-29 11:10:36,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-29 11:10:36,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:10:36,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:10:36,432 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:10:36,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-04-29 11:10:36,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-04-29 11:10:36,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:10:36,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:10:36,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:10:36,460 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:10:36,462 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location thread_function_dataraceErr0ASSERT_VIOLATIONDATA_RACE (8 of 9 remaining) [2025-04-29 11:10:36,463 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-04-29 11:10:36,463 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-04-29 11:10:36,463 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-04-29 11:10:36,463 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2025-04-29 11:10:36,463 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2025-04-29 11:10:36,463 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread_function_dataraceErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2025-04-29 11:10:36,463 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread_function_dataraceErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-04-29 11:10:36,464 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread_function_dataraceErr1ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-04-29 11:10:36,464 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:10:36,465 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-29 11:10:36,498 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:10:36,498 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:10:36,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:10:36 BasicIcfg [2025-04-29 11:10:36,502 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:10:36,502 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:10:36,502 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:10:36,502 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:10:36,503 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:10:35" (3/4) ... [2025-04-29 11:10:36,503 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-29 11:10:36,542 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 4. [2025-04-29 11:10:36,569 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:10:36,569 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:10:36,569 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:10:36,570 INFO L158 Benchmark]: Toolchain (without parser) took 1303.94ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 73.5MB in the end (delta: 33.2MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2025-04-29 11:10:36,570 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:10:36,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.15ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 92.1MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:10:36,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.04ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 91.1MB in the end (delta: 945.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:10:36,570 INFO L158 Benchmark]: Boogie Preprocessor took 16.22ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 90.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:10:36,571 INFO L158 Benchmark]: RCFGBuilder took 216.03ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 78.1MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:10:36,571 INFO L158 Benchmark]: TraceAbstraction took 779.67ms. Allocated memory is still 142.6MB. Free memory was 77.2MB in the beginning and 79.9MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:10:36,571 INFO L158 Benchmark]: Witness Printer took 67.05ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 73.5MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:10:36,572 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 201.3MB. Free memory is still 128.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.15ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 92.1MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.04ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 91.1MB in the end (delta: 945.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.22ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 90.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.03ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 78.1MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 779.67ms. Allocated memory is still 142.6MB. Free memory was 77.2MB in the beginning and 79.9MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 67.05ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 73.5MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 40]: Data race detected Data race detected The following path leads to a data race: [L31] 0 int myglobal; VAL [myglobal=0] [L32] 0 pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER; VAL [myglobal=0, mymutex=0] [L51] 0 pthread_t mythread; VAL [myglobal=0, mymutex=0] [L52] 0 int i; VAL [myglobal=0, mymutex=0] [L54] FCALL, FORK 0 pthread_create( &mythread, NULL, thread_function_datarace, NULL) VAL [\at(arg, Pre)={0:0}, myglobal=0, mymutex=0, mythread=-1] [L37] 1 int i,j; VAL [\at(arg, Pre)={0:0}, arg={0:0}, myglobal=0, mymutex=0] [L38] 1 i=0 VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, myglobal=0, mymutex=0] [L38] COND TRUE 1 i<20 VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, myglobal=0, mymutex=0] [L40] 1 j=myglobal VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, myglobal=0, mymutex=0] [L54] COND FALSE 0 !(pthread_create( &mythread, NULL, thread_function_datarace, NULL)) VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, myglobal=0, mymutex=0, mythread=-1] [L66] 0 i=0 VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, i=0, myglobal=0, mymutex=0, mythread=-1] [L66] COND TRUE 0 i<20 VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, i=0, myglobal=0, mymutex=0, mythread=-1] [L68] EXPR 0 myglobal+1 VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, i=0, myglobal=0, mymutex=0, mythread=-1] [L68] 0 myglobal=myglobal+1 VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, i=0, myglobal=1, mymutex=0, mythread=-1] [L40] 1 j=myglobal VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, myglobal=1, mymutex=0] Now there is a data race on ~myglobal~0 between C: myglobal=myglobal+1 [68] and C: j=myglobal [40] - UnprovableResult [Line: 68]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 44]: 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, 119 locations, 124 edges, 9 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: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 8 mSDtfsCounter, 86 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=289occurred in iteration=3, InterpolantAutomatonStates: 9, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-29 11:10:36,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(DATA-RACE)