./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_16-ps_add1_rc.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/goblint-regression/04-mutex_16-ps_add1_rc.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 f14ae10b41ae5d21e4843c4d2c5b0585a53e06611a0f2164ba4ebd070e3a3e0d --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:07:56,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:07:56,343 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-04-29 11:07:56,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:07:56,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:07:56,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:07:56,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:07:56,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:07:56,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:07:56,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:07:56,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:07:56,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:07:56,371 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:07:56,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:07:56,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:07:56,374 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:07:56,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:07:56,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:07:56,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:07:56,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:07:56,375 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:07:56,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:07:56,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:07:56,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:07:56,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:07:56,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:07:56,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:07:56,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:07:56,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:07:56,376 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:07:56,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:07:56,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:07:56,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:07:56,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:07:56,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:07:56,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:07:56,377 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 -> f14ae10b41ae5d21e4843c4d2c5b0585a53e06611a0f2164ba4ebd070e3a3e0d [2025-04-29 11:07:56,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:07:56,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:07:56,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:07:56,616 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:07:56,616 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:07:56,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_16-ps_add1_rc.c [2025-04-29 11:07:57,955 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b338c99e/df9097b2bd094bda9788418e4e5c82d1/FLAG5ad56cb05 [2025-04-29 11:07:58,141 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:07:58,142 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_16-ps_add1_rc.c [2025-04-29 11:07:58,143 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:07:58,143 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:07:58,144 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:07:58,148 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b338c99e/df9097b2bd094bda9788418e4e5c82d1/FLAG5ad56cb05 [2025-04-29 11:07:59,005 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b338c99e/df9097b2bd094bda9788418e4e5c82d1 [2025-04-29 11:07:59,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:07:59,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:07:59,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:07:59,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:07:59,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:07:59,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698017c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59, skipping insertion in model container [2025-04-29 11:07:59,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,023 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:07:59,177 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:07:59,184 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:07:59,207 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:07:59,225 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:07:59,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59 WrapperNode [2025-04-29 11:07:59,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:07:59,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:07:59,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:07:59,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:07:59,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,252 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2025-04-29 11:07:59,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:07:59,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:07:59,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:07:59,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:07:59,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,265 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:07:59,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:07:59,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:07:59,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:07:59,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (1/1) ... [2025-04-29 11:07:59,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:07:59,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:07:59,306 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 11:07:59,312 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 11:07:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:07:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 11:07:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 11:07:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:07:59,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:07:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-29 11:07:59,326 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-29 11:07:59,326 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-29 11:07:59,327 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 11:07:59,389 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:07:59,391 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:07:59,487 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:07:59,487 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:07:59,512 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:07:59,512 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:07:59,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:07:59 BoogieIcfgContainer [2025-04-29 11:07:59,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:07:59,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:07:59,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:07:59,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:07:59,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:07:59" (1/3) ... [2025-04-29 11:07:59,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1935f11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:07:59, skipping insertion in model container [2025-04-29 11:07:59,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:07:59" (2/3) ... [2025-04-29 11:07:59,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1935f11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:07:59, skipping insertion in model container [2025-04-29 11:07:59,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:07:59" (3/3) ... [2025-04-29 11:07:59,522 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_16-ps_add1_rc.c [2025-04-29 11:07:59,534 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:07:59,538 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_16-ps_add1_rc.c that has 2 procedures, 69 locations, 70 edges, 1 initial locations, 0 loop locations, and 4 error locations. [2025-04-29 11:07:59,538 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:07:59,591 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-29 11:07:59,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 146 flow [2025-04-29 11:07:59,657 INFO L116 PetriNetUnfolderBase]: 3/70 cut-off events. [2025-04-29 11:07:59,659 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:07:59,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 3/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2025-04-29 11:07:59,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 71 transitions, 146 flow [2025-04-29 11:07:59,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 143 flow [2025-04-29 11:07:59,675 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:07:59,686 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;@42918922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:07:59,688 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-29 11:07:59,697 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:07:59,700 INFO L116 PetriNetUnfolderBase]: 1/28 cut-off events. [2025-04-29 11:07:59,700 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:07:59,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:07:59,701 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] [2025-04-29 11:07:59,701 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 11:07:59,706 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:07:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1193061069, now seen corresponding path program 1 times [2025-04-29 11:07:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:07:59,713 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130492477] [2025-04-29 11:07:59,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:07:59,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:07:59,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-29 11:07:59,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-29 11:07:59,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:07:59,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:07:59,860 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 11:07:59,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:07:59,863 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130492477] [2025-04-29 11:07:59,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130492477] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:07:59,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:07:59,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:07:59,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124924984] [2025-04-29 11:07:59,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:07:59,870 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:07:59,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:07:59,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:07:59,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:07:59,918 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2025-04-29 11:07:59,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 11:07:59,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:07:59,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2025-04-29 11:07:59,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:00,003 INFO L116 PetriNetUnfolderBase]: 41/255 cut-off events. [2025-04-29 11:08:00,003 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-29 11:08:00,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 255 events. 41/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1173 event pairs, 10 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 320. Up to 43 conditions per place. [2025-04-29 11:08:00,006 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 17 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2025-04-29 11:08:00,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 209 flow [2025-04-29 11:08:00,008 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2025-04-29 11:08:00,019 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9342723004694836 [2025-04-29 11:08:00,021 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 143 flow. Second operand 3 states and 199 transitions. [2025-04-29 11:08:00,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 209 flow [2025-04-29 11:08:00,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 80 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:08:00,030 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 194 flow [2025-04-29 11:08:00,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2025-04-29 11:08:00,037 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2025-04-29 11:08:00,038 INFO L485 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 194 flow [2025-04-29 11:08:00,038 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 11:08:00,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:00,039 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 11:08:00,039 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:08:00,039 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 11:08:00,040 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash -878109634, now seen corresponding path program 1 times [2025-04-29 11:08:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:00,041 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011375432] [2025-04-29 11:08:00,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:00,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-29 11:08:00,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-29 11:08:00,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:00,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:00,108 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 11:08:00,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:00,109 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011375432] [2025-04-29 11:08:00,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011375432] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:00,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:00,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:08:00,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106415662] [2025-04-29 11:08:00,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:00,110 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:08:00,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:00,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:08:00,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:08:00,131 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 71 [2025-04-29 11:08:00,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 11:08:00,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:00,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 71 [2025-04-29 11:08:00,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:00,196 INFO L116 PetriNetUnfolderBase]: 62/314 cut-off events. [2025-04-29 11:08:00,197 INFO L117 PetriNetUnfolderBase]: For 102/128 co-relation queries the response was YES. [2025-04-29 11:08:00,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 314 events. 62/314 cut-off events. For 102/128 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1567 event pairs, 17 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 511. Up to 93 conditions per place. [2025-04-29 11:08:00,198 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 16 selfloop transitions, 7 changer transitions 2/83 dead transitions. [2025-04-29 11:08:00,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 266 flow [2025-04-29 11:08:00,199 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2025-04-29 11:08:00,200 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9107981220657277 [2025-04-29 11:08:00,200 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 194 flow. Second operand 3 states and 194 transitions. [2025-04-29 11:08:00,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 266 flow [2025-04-29 11:08:00,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:08:00,207 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 236 flow [2025-04-29 11:08:00,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2025-04-29 11:08:00,207 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 5 predicate places. [2025-04-29 11:08:00,207 INFO L485 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 236 flow [2025-04-29 11:08:00,207 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 11:08:00,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:00,207 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 11:08:00,208 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:08:00,208 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 11:08:00,208 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2105771121, now seen corresponding path program 1 times [2025-04-29 11:08:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:00,208 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868997702] [2025-04-29 11:08:00,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:00,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:00,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-29 11:08:00,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-29 11:08:00,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:00,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:08:00,253 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 11:08:00,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:08:00,253 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868997702] [2025-04-29 11:08:00,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868997702] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:08:00,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:08:00,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:08:00,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091550729] [2025-04-29 11:08:00,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:08:00,254 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:08:00,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:08:00,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:08:00,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:08:00,278 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 71 [2025-04-29 11:08:00,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 11:08:00,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:08:00,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 71 [2025-04-29 11:08:00,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:08:00,332 INFO L116 PetriNetUnfolderBase]: 75/391 cut-off events. [2025-04-29 11:08:00,332 INFO L117 PetriNetUnfolderBase]: For 182/203 co-relation queries the response was YES. [2025-04-29 11:08:00,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 391 events. 75/391 cut-off events. For 182/203 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2037 event pairs, 17 based on Foata normal form. 1/359 useless extension candidates. Maximal degree in co-relation 691. Up to 99 conditions per place. [2025-04-29 11:08:00,335 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 16 selfloop transitions, 7 changer transitions 7/88 dead transitions. [2025-04-29 11:08:00,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 324 flow [2025-04-29 11:08:00,335 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:08:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:08:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2025-04-29 11:08:00,336 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.9061032863849765 [2025-04-29 11:08:00,336 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 236 flow. Second operand 3 states and 193 transitions. [2025-04-29 11:08:00,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 324 flow [2025-04-29 11:08:00,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:08:00,339 INFO L231 Difference]: Finished difference. Result has 78 places, 80 transitions, 258 flow [2025-04-29 11:08:00,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=78, PETRI_TRANSITIONS=80} [2025-04-29 11:08:00,339 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 7 predicate places. [2025-04-29 11:08:00,340 INFO L485 AbstractCegarLoop]: Abstraction has has 78 places, 80 transitions, 258 flow [2025-04-29 11:08:00,340 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 11:08:00,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:08:00,340 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] [2025-04-29 11:08:00,340 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:08:00,340 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 11:08:00,341 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:08:00,341 INFO L85 PathProgramCache]: Analyzing trace with hash 102871498, now seen corresponding path program 1 times [2025-04-29 11:08:00,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:08:00,341 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862258782] [2025-04-29 11:08:00,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:08:00,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:08:00,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-04-29 11:08:00,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-04-29 11:08:00,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:00,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:08:00,360 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:08:00,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-04-29 11:08:00,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-04-29 11:08:00,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:08:00,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:08:00,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:08:00,392 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:08:00,393 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2025-04-29 11:08:00,395 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2025-04-29 11:08:00,396 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-04-29 11:08:00,397 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2025-04-29 11:08:00,397 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2025-04-29 11:08:00,397 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2025-04-29 11:08:00,397 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2025-04-29 11:08:00,397 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:08:00,398 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-29 11:08:00,443 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:08:00,443 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:08:00,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:08:00 BasicIcfg [2025-04-29 11:08:00,449 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:08:00,450 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:08:00,450 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:08:00,450 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:08:00,451 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:07:59" (3/4) ... [2025-04-29 11:08:00,452 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-29 11:08:00,493 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 3. [2025-04-29 11:08:00,521 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:08:00,522 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:08:00,522 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:08:00,522 INFO L158 Benchmark]: Toolchain (without parser) took 1514.79ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 70.8MB in the end (delta: 42.5MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2025-04-29 11:08:00,523 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:00,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.66ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 98.6MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:08:00,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.33ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:00,524 INFO L158 Benchmark]: Boogie Preprocessor took 25.36ms. Allocated memory is still 142.6MB. Free memory was 97.3MB in the beginning and 96.3MB in the end (delta: 983.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:08:00,525 INFO L158 Benchmark]: RCFGBuilder took 232.58ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 83.4MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:08:00,525 INFO L158 Benchmark]: TraceAbstraction took 934.21ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 77.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2025-04-29 11:08:00,525 INFO L158 Benchmark]: Witness Printer took 71.79ms. Allocated memory is still 142.6MB. Free memory was 77.7MB in the beginning and 70.8MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:08:00,526 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.66ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 98.6MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.33ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.36ms. Allocated memory is still 142.6MB. Free memory was 97.3MB in the beginning and 96.3MB in the end (delta: 983.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 232.58ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 83.4MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 934.21ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 77.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Witness Printer took 71.79ms. Allocated memory is still 142.6MB. Free memory was 77.7MB in the beginning and 70.8MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 35]: Data race detected Data race detected The following path leads to a data race: [L14] 0 int glob; VAL [glob=0] [L15] 0 pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER; VAL [glob=0, m={1:0}] [L25] 0 int i = __VERIFIER_nondet_int(); VAL [glob=0, i=0, m={1:0}] [L26] 0 pthread_t id; VAL [glob=0, i=0, m={1:0}] [L27] FCALL, FORK 0 pthread_create(&id, NULL, t_fun, NULL) VAL [\at(arg, Pre)={0:0}, glob=0, i=0, id=-1, m={1:0}] [L19] 1 glob++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, glob=0, m={1:0}] [L30] COND FALSE 0 !(\read(i)) VAL [\at(arg, Pre)={0:0}, arg={0:0}, glob=0, i=0, id=-1, m={1:0}] [L33] 0 i++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, glob=0, i=1, id=-1, m={1:0}] [L34] COND TRUE 0 \read(i) VAL [\at(arg, Pre)={0:0}, arg={0:0}, glob=0, i=1, id=-1, m={1:0}] [L35] 0 glob++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, glob=0, i=1, id=-1, m={1:0}] [L19] 1 glob++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, glob=1, m={1:0}] [L35] 0 glob++ VAL [\at(arg, Pre)={0:0}, arg={0:0}, glob=1, i=1, id=-1, m={1:0}] Now there is a data race on ~glob~0 between C: glob++ [19] and C: glob++ [35] - UnprovableResult [Line: 35]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 27]: 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: 19]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 19]: 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, 89 locations, 90 edges, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 20 mSDtfsCounter, 104 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=258occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 87 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 11:08:00,539 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)