./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:02:09,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:02:09,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DataRace-32bit-Taipan_Default.epf [2024-11-14 05:02:09,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:02:09,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:02:09,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:02:09,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:02:09,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:02:09,159 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:02:09,159 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:02:09,160 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:02:09,160 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:02:09,160 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:02:09,160 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:02:09,161 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:02:09,161 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:02:09,161 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:02:09,161 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:02:09,161 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:02:09,161 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:02:09,161 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:02:09,161 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:02:09,162 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:02:09,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:02:09,162 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:02:09,162 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:02:09,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:02:09,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:02:09,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:02:09,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:02:09,163 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:02:09,163 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-14 05:02:09,163 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:02:09,163 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:02:09,163 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:02:09,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:02:09,164 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:02:09,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:02:09,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:02:09,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:02:09,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:02:09,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:02:09,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:02:09,165 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:02:09,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:02:09,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:02:09,165 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:02:09,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:02:09,165 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2024-11-14 05:02:09,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:02:09,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:02:09,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:02:09,525 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:02:09,526 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:02:09,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i Unable to find full path for "g++" [2024-11-14 05:02:11,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:02:11,885 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:02:11,886 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2024-11-14 05:02:11,909 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/data/a2456586b/a951e589b89b421c97cff91e6aeb7b1c/FLAGa454796ce [2024-11-14 05:02:11,924 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/data/a2456586b/a951e589b89b421c97cff91e6aeb7b1c [2024-11-14 05:02:11,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:02:11,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:02:11,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:02:11,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:02:11,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:02:11,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:02:11" (1/1) ... [2024-11-14 05:02:11,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adda317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:11, skipping insertion in model container [2024-11-14 05:02:11,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:02:11" (1/1) ... [2024-11-14 05:02:11,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:02:12,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:02:12,794 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:02:12,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:02:13,123 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:02:13,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13 WrapperNode [2024-11-14 05:02:13,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:02:13,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:02:13,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:02:13,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:02:13,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,324 INFO L138 Inliner]: procedures = 491, calls = 162, calls flagged for inlining = 48, calls inlined = 122, statements flattened = 3357 [2024-11-14 05:02:13,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:02:13,325 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:02:13,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:02:13,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:02:13,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,577 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:02:13,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:02:13,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:02:13,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:02:13,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (1/1) ... [2024-11-14 05:02:13,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:02:13,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:02:13,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:02:13,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cddad99-60a7-4691-bb3e-c5221d752158/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:02:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2024-11-14 05:02:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2024-11-14 05:02:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 05:02:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:02:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 05:02:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:02:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-14 05:02:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:02:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:02:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:02:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:02:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:02:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:02:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 05:02:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-14 05:02:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:02:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:02:13,755 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 05:02:14,208 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:02:14,210 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:02:19,264 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 05:02:19,265 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:02:21,139 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:02:21,141 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-14 05:02:21,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:02:21 BoogieIcfgContainer [2024-11-14 05:02:21,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:02:21,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:02:21,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:02:21,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:02:21,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:02:11" (1/3) ... [2024-11-14 05:02:21,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9eddc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:02:21, skipping insertion in model container [2024-11-14 05:02:21,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:02:13" (2/3) ... [2024-11-14 05:02:21,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9eddc03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:02:21, skipping insertion in model container [2024-11-14 05:02:21,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:02:21" (3/3) ... [2024-11-14 05:02:21,158 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2024-11-14 05:02:21,180 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:02:21,182 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG workstealqueue_mutex-2.i that has 2 procedures, 2489 locations, 1 initial locations, 11 loop locations, and 257 error locations. [2024-11-14 05:02:21,183 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 05:02:21,628 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-14 05:02:21,732 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 2492 places, 2580 transitions, 5167 flow [2024-11-14 05:02:31,229 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 468070 states, 462545 states have (on average 2.084657708979667) internal successors, (964248), 468069 states have internal predecessors, (964248), 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) [2024-11-14 05:02:31,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:02:31,310 INFO L333 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=FINITE_AUTOMATA, 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;@5a5219e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:02:31,310 INFO L334 AbstractCegarLoop]: Starting to check reachability of 280 error locations. [2024-11-14 05:02:31,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 468070 states, 462545 states have (on average 2.084657708979667) internal successors, (964248), 468069 states have internal predecessors, (964248), 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) [2024-11-14 05:02:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 05:02:31,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:02:31,829 INFO L215 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:02:31,829 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [StealerErr0ASSERT_VIOLATIONDATA_RACE, StealerErr1ASSERT_VIOLATIONDATA_RACE, StealerErr2ASSERT_VIOLATIONDATA_RACE, StealerErr3ASSERT_VIOLATIONDATA_RACE (and 276 more)] === [2024-11-14 05:02:31,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:02:31,834 INFO L85 PathProgramCache]: Analyzing trace with hash 985903709, now seen corresponding path program 1 times [2024-11-14 05:02:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:02:31,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793748504] [2024-11-14 05:02:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:02:31,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:02:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:02:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:02:33,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:02:33,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793748504] [2024-11-14 05:02:33,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793748504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:02:33,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:02:33,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:02:33,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149591296] [2024-11-14 05:02:33,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:02:33,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:02:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:02:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:02:33,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:02:34,068 INFO L87 Difference]: Start difference. First operand has 468070 states, 462545 states have (on average 2.084657708979667) internal successors, (964248), 468069 states have internal predecessors, (964248), 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) Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 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) [2024-11-14 05:02:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:02:53,372 INFO L93 Difference]: Finished difference Result 873675 states and 1859847 transitions. [2024-11-14 05:02:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:02:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 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) Word has length 57 [2024-11-14 05:02:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:02:56,145 INFO L225 Difference]: With dead ends: 873675 [2024-11-14 05:02:56,145 INFO L226 Difference]: Without dead ends: 405583 [2024-11-14 05:02:57,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:02:57,779 INFO L432 NwaCegarLoop]: 2287 mSDtfsCounter, 1 mSDsluCounter, 4842 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7129 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:02:57,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7129 Invalid, 2556 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [166 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2024-11-14 05:02:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405583 states. [2024-11-14 05:03:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405583 to 405583. [2024-11-14 05:03:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405583 states, 404725 states have (on average 2.0544987337080736) internal successors, (831507), 405582 states have internal predecessors, (831507), 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) [2024-11-14 05:03:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405583 states to 405583 states and 831507 transitions. [2024-11-14 05:03:12,331 INFO L78 Accepts]: Start accepts. Automaton has 405583 states and 831507 transitions. Word has length 57 [2024-11-14 05:03:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:12,332 INFO L471 AbstractCegarLoop]: Abstraction has 405583 states and 831507 transitions. [2024-11-14 05:03:12,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 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) [2024-11-14 05:03:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 405583 states and 831507 transitions. [2024-11-14 05:03:12,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 05:03:12,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:12,337 INFO L215 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:12,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:03:12,338 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [StealerErr0ASSERT_VIOLATIONDATA_RACE, StealerErr1ASSERT_VIOLATIONDATA_RACE, StealerErr2ASSERT_VIOLATIONDATA_RACE, StealerErr3ASSERT_VIOLATIONDATA_RACE (and 276 more)] === [2024-11-14 05:03:12,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1567730930, now seen corresponding path program 1 times [2024-11-14 05:03:12,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:12,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638231978] [2024-11-14 05:03:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:12,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:13,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:13,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638231978] [2024-11-14 05:03:13,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638231978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:13,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:13,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:03:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270017335] [2024-11-14 05:03:13,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:13,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:03:13,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:03:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:03:13,167 INFO L87 Difference]: Start difference. First operand 405583 states and 831507 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2024-11-14 05:03:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:21,786 INFO L93 Difference]: Finished difference Result 405583 states and 831507 transitions. [2024-11-14 05:03:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:03:21,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) Word has length 65 [2024-11-14 05:03:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted.