./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_19-call_by_ptr_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_19-call_by_ptr_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1 --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 809ae362eff552f429817a169faf72f9b59df833d49ee9dde0f5e8fc70fce634 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:24:45,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:24:45,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-12-02 12:24:46,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:24:46,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:24:46,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:24:46,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:24:46,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:24:46,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:24:46,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:24:46,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:24:46,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:24:46,023 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:24:46,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:24:46,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:24:46,023 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:24:46,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:24:46,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:24:46,024 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:24:46,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:24:46,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:24:46,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:24:46,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:24:46,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:24:46,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:24:46,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:24:46,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:24:46,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:24:46,025 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:24:46,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:24:46,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:24:46,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:24:46,026 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:24:46,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:24:46,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:24:46,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:24:46,026 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1 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 -> 809ae362eff552f429817a169faf72f9b59df833d49ee9dde0f5e8fc70fce634 [2024-12-02 12:24:46,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:24:46,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:24:46,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:24:46,284 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:24:46,285 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:24:46,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/04-mutex_19-call_by_ptr_rc.i [2024-12-02 12:24:48,975 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/data/bd9d1061a/7dc6122102164a699dfe905d1452e71c/FLAG4f6ac2aef [2024-12-02 12:24:49,207 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:24:49,208 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/sv-benchmarks/c/goblint-regression/04-mutex_19-call_by_ptr_rc.i [2024-12-02 12:24:49,221 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/data/bd9d1061a/7dc6122102164a699dfe905d1452e71c/FLAG4f6ac2aef [2024-12-02 12:24:49,233 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/data/bd9d1061a/7dc6122102164a699dfe905d1452e71c [2024-12-02 12:24:49,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:24:49,236 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:24:49,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:24:49,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:24:49,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:24:49,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5bce4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49, skipping insertion in model container [2024-12-02 12:24:49,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,267 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:24:49,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:24:49,535 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:24:49,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:24:49,609 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:24:49,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49 WrapperNode [2024-12-02 12:24:49,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:24:49,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:24:49,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:24:49,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:24:49,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,641 INFO L138 Inliner]: procedures = 166, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-12-02 12:24:49,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:24:49,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:24:49,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:24:49,642 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:24:49,649 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,656 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:24:49,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:24:49,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:24:49,664 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:24:49,665 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2024-12-02 12:24:49,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:24:49,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:24:49,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:24:49,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:24:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 12:24:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:24:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 12:24:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 12:24:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-02 12:24:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 12:24:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:24:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:24:49,716 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 12:24:49,813 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:24:49,815 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:24:49,955 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:24:49,955 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:24:49,974 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:24:49,975 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 12:24:49,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:24:49 BoogieIcfgContainer [2024-12-02 12:24:49,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:24:49,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:24:49,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:24:49,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:24:49,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:24:49" (1/3) ... [2024-12-02 12:24:49,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4709c065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:24:49, skipping insertion in model container [2024-12-02 12:24:49,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (2/3) ... [2024-12-02 12:24:49,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4709c065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:24:49, skipping insertion in model container [2024-12-02 12:24:49,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:24:49" (3/3) ... [2024-12-02 12:24:49,984 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_19-call_by_ptr_rc.i [2024-12-02 12:24:49,997 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:24:49,998 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_19-call_by_ptr_rc.i that has 2 procedures, 93 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2024-12-02 12:24:49,998 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:24:50,042 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 12:24:50,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 95 transitions, 197 flow [2024-12-02 12:24:50,115 INFO L124 PetriNetUnfolderBase]: 3/94 cut-off events. [2024-12-02 12:24:50,118 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 12:24:50,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 3/94 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-12-02 12:24:50,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 95 transitions, 197 flow [2024-12-02 12:24:50,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 89 transitions, 181 flow [2024-12-02 12:24:50,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:24:50,141 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=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;@65f269d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:24:50,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 12:24:50,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:24:50,151 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2024-12-02 12:24:50,151 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:24:50,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:24:50,152 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] [2024-12-02 12:24:50,153 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-12-02 12:24:50,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:50,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1965283438, now seen corresponding path program 1 times [2024-12-02 12:24:50,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:24:50,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366396842] [2024-12-02 12:24:50,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:50,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:24:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:24:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:24:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366396842] [2024-12-02 12:24:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366396842] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:24:50,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:24:50,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:24:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609969635] [2024-12-02 12:24:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:24:50,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:24:50,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:24:50,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:24:50,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:24:50,392 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2024-12-02 12:24:50,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2024-12-02 12:24:50,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:24:50,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2024-12-02 12:24:50,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:24:50,498 INFO L124 PetriNetUnfolderBase]: 45/343 cut-off events. [2024-12-02 12:24:50,499 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 12:24:50,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 343 events. 45/343 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1255 event pairs, 11 based on Foata normal form. 8/317 useless extension candidates. Maximal degree in co-relation 410. Up to 52 conditions per place. [2024-12-02 12:24:50,502 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 17 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2024-12-02 12:24:50,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 98 transitions, 245 flow [2024-12-02 12:24:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:24:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:24:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-12-02 12:24:50,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9368421052631579 [2024-12-02 12:24:50,517 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 181 flow. Second operand 3 states and 267 transitions. [2024-12-02 12:24:50,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 98 transitions, 245 flow [2024-12-02 12:24:50,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 98 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:24:50,525 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 230 flow [2024-12-02 12:24:50,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=93, PETRI_TRANSITIONS=94} [2024-12-02 12:24:50,531 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2024-12-02 12:24:50,531 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 230 flow [2024-12-02 12:24:50,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2024-12-02 12:24:50,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:24:50,531 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] [2024-12-02 12:24:50,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:24:50,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-12-02 12:24:50,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:50,532 INFO L85 PathProgramCache]: Analyzing trace with hash -353156331, now seen corresponding path program 1 times [2024-12-02 12:24:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:24:50,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890451800] [2024-12-02 12:24:50,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:50,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:24:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:24:50,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:24:50,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890451800] [2024-12-02 12:24:50,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890451800] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:24:50,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:24:50,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:24:50,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671064214] [2024-12-02 12:24:50,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:24:50,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:24:50,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:24:50,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:24:50,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:24:50,626 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2024-12-02 12:24:50,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2024-12-02 12:24:50,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:24:50,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2024-12-02 12:24:50,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:24:50,715 INFO L124 PetriNetUnfolderBase]: 69/488 cut-off events. [2024-12-02 12:24:50,715 INFO L125 PetriNetUnfolderBase]: For 117/120 co-relation queries the response was YES. [2024-12-02 12:24:50,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 488 events. 69/488 cut-off events. For 117/120 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2292 event pairs, 21 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 701. Up to 105 conditions per place. [2024-12-02 12:24:50,719 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 17 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-12-02 12:24:50,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 302 flow [2024-12-02 12:24:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:24:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:24:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2024-12-02 12:24:50,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9122807017543859 [2024-12-02 12:24:50,721 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 230 flow. Second operand 3 states and 260 transitions. [2024-12-02 12:24:50,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 302 flow [2024-12-02 12:24:50,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 101 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:24:50,725 INFO L231 Difference]: Finished difference. Result has 95 places, 99 transitions, 274 flow [2024-12-02 12:24:50,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2024-12-02 12:24:50,725 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2024-12-02 12:24:50,726 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 274 flow [2024-12-02 12:24:50,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2024-12-02 12:24:50,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:24:50,726 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:24:50,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:24:50,726 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-12-02 12:24:50,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:50,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2097761700, now seen corresponding path program 1 times [2024-12-02 12:24:50,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:24:50,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536632754] [2024-12-02 12:24:50,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:50,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:24:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:24:50,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:24:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536632754] [2024-12-02 12:24:50,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536632754] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:24:50,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:24:50,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:24:50,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709851427] [2024-12-02 12:24:50,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:24:50,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:24:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:24:50,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:24:50,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:24:50,820 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2024-12-02 12:24:50,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2024-12-02 12:24:50,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:24:50,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2024-12-02 12:24:50,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:24:50,912 INFO L124 PetriNetUnfolderBase]: 97/589 cut-off events. [2024-12-02 12:24:50,912 INFO L125 PetriNetUnfolderBase]: For 283/292 co-relation queries the response was YES. [2024-12-02 12:24:50,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 589 events. 97/589 cut-off events. For 283/292 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2948 event pairs, 29 based on Foata normal form. 4/550 useless extension candidates. Maximal degree in co-relation 966. Up to 151 conditions per place. [2024-12-02 12:24:50,915 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 19 selfloop transitions, 8 changer transitions 3/106 dead transitions. [2024-12-02 12:24:50,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 106 transitions, 360 flow [2024-12-02 12:24:50,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:24:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 12:24:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2024-12-02 12:24:50,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8982456140350877 [2024-12-02 12:24:50,916 INFO L175 Difference]: Start difference. First operand has 95 places, 99 transitions, 274 flow. Second operand 3 states and 256 transitions. [2024-12-02 12:24:50,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 106 transitions, 360 flow [2024-12-02 12:24:50,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 106 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:24:50,920 INFO L231 Difference]: Finished difference. Result has 97 places, 102 transitions, 314 flow [2024-12-02 12:24:50,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=97, PETRI_TRANSITIONS=102} [2024-12-02 12:24:50,921 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 7 predicate places. [2024-12-02 12:24:50,921 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 102 transitions, 314 flow [2024-12-02 12:24:50,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2024-12-02 12:24:50,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:24:50,921 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:24:50,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:24:50,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-12-02 12:24:50,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:50,922 INFO L85 PathProgramCache]: Analyzing trace with hash -247664406, now seen corresponding path program 1 times [2024-12-02 12:24:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:24:50,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702693358] [2024-12-02 12:24:50,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:50,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:24:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:24:50,948 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 12:24:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:24:50,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 12:24:50,980 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 12:24:50,981 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2024-12-02 12:24:50,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-12-02 12:24:50,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-12-02 12:24:50,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-12-02 12:24:50,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-12-02 12:24:50,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-12-02 12:24:50,983 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-12-02 12:24:50,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:24:50,984 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 12:24:51,019 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 12:24:51,020 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:24:51,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:24:51 BasicIcfg [2024-12-02 12:24:51,024 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:24:51,024 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:24:51,024 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:24:51,024 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:24:51,025 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:24:49" (3/4) ... [2024-12-02 12:24:51,026 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-02 12:24:51,064 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 5. [2024-12-02 12:24:51,097 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 12:24:51,097 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 12:24:51,097 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:24:51,098 INFO L158 Benchmark]: Toolchain (without parser) took 1862.47ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 89.0MB in the end (delta: 28.5MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2024-12-02 12:24:51,098 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 142.6MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:24:51,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.00ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 97.6MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 12:24:51,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.38ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 96.0MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:24:51,099 INFO L158 Benchmark]: Boogie Preprocessor took 21.52ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 94.9MB in the end (delta: 900.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:24:51,099 INFO L158 Benchmark]: RCFGBuilder took 311.06ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 80.4MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:24:51,100 INFO L158 Benchmark]: TraceAbstraction took 1046.21ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 95.9MB in the end (delta: -16.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:24:51,100 INFO L158 Benchmark]: Witness Printer took 73.42ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 89.0MB in the end (delta: 6.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:24:51,101 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 142.6MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 373.00ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 97.6MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.38ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 96.0MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.52ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 94.9MB in the end (delta: 900.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 311.06ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 80.4MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1046.21ms. Allocated memory is still 142.6MB. Free memory was 79.9MB in the beginning and 95.9MB in the end (delta: -16.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 73.42ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 89.0MB in the end (delta: 6.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 697]: Data race detected Data race detected The following path leads to a data race: [L686] 0 int glob; VAL [glob=0] [L687] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; VAL [glob=0, mutex1={1:0}] [L688] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; VAL [glob=0, mutex1={1:0}, mutex2={2:0}] [L702] 0 pthread_t id; VAL [glob=0, mutex1={1:0}, mutex2={2:0}] [L703] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [\old(arg)={0:0}, glob=0, id=-1, mutex1={1:0}, mutex2={2:0}] [L704] CALL 0 foo(bar) [L681] 0 int i = 0; VAL [\old(arg)={0:0}, \old(callback)={-1:1}, arg={0:0}, callback={-1:1}, glob=0, i=0, mutex1={1:0}, mutex2={2:0}] [L681] COND TRUE 0 i < 10 VAL [\old(arg)={0:0}, \old(callback)={-1:1}, arg={0:0}, callback={-1:1}, glob=0, i=0, mutex1={1:0}, mutex2={2:0}] [L682] COND TRUE 0 __VERIFIER_nondet_int() VAL [\old(arg)={0:0}, \old(callback)={-1:1}, arg={0:0}, callback={-1:1}, glob=0, i=0, mutex1={1:0}, mutex2={2:0}] [L683] CALL 0 callback() [L691] EXPR 1 glob+1 VAL [\old(arg)={0:0}, arg={0:0}, glob=0, mutex1={1:0}, mutex2={2:0}] [L697] 0 glob+1 VAL [\old(arg)={0:0}, arg={0:0}, glob=0, mutex1={1:0}, mutex2={2:0}] [L691] EXPR 1 glob+1 VAL [\old(arg)={0:0}, arg={0:0}, glob=0, mutex1={1:0}, mutex2={2:0}] [L691] 1 glob=glob+1 VAL [\old(arg)={0:0}, arg={0:0}, glob=1, mutex1={1:0}, mutex2={2:0}] [L697] 0 glob+1 VAL [\old(arg)={0:0}, arg={0:0}, glob=1, mutex1={1:0}, mutex2={2:0}] Now there is a data race on ~glob~0 between C: glob=glob+1 [691] and C: glob+1 [697] - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: 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: 691]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 111 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 92 IncrementalHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 6 mSDtfsCounter, 92 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=314occurred 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, 0.2s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 113 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! [2024-12-02 12:24:51,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ada78a-c943-4392-8d4d-715fa8bf7a7f/bin/uautomizer-verify-84ZbGMXZE1/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)