./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:08:01,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:08:01,821 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:08:01,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:08:01,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:08:01,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:08:01,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:08:01,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:08:01,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:08:01,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:08:01,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:08:01,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:08:01,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:08:01,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:08:01,881 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:08:01,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:08:01,881 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:08:01,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:08:01,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:08:01,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:08:01,883 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:08:01,883 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:08:01,883 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:08:01,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:08:01,884 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:08:01,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:08:01,884 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:08:01,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:08:01,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:08:01,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:08:01,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:08:01,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:08:01,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:08:01,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:08:01,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:08:01,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:08:01,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:08:01,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:08:01,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:08:01,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:08:01,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:08:01,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:08:01,890 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-10-24 19:08:02,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:08:02,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:08:02,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:08:02,122 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:08:02,123 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:08:02,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-10-24 19:08:03,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:08:03,865 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:08:03,865 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-10-24 19:08:03,890 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275e629a3/92587dc1bbdb40fc9f5a84410d32a0d3/FLAGdc81b9f58 [2024-10-24 19:08:03,902 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275e629a3/92587dc1bbdb40fc9f5a84410d32a0d3 [2024-10-24 19:08:03,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:08:03,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:08:03,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:08:03,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:08:03,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:08:03,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:08:03" (1/1) ... [2024-10-24 19:08:03,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b601cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:03, skipping insertion in model container [2024-10-24 19:08:03,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:08:03" (1/1) ... [2024-10-24 19:08:03,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:08:04,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:08:04,701 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:08:04,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:08:04,848 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:08:04,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04 WrapperNode [2024-10-24 19:08:04,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:08:04,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:08:04,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:08:04,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:08:04,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,924 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 109 [2024-10-24 19:08:04,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:08:04,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:08:04,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:08:04,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:08:04,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,959 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [5, 1, 1, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5, 0, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1, 1]. [2024-10-24 19:08:04,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:08:04,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:08:04,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:08:04,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:08:04,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (1/1) ... [2024-10-24 19:08:04,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:08:04,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:08:05,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:08:05,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:08:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-10-24 19:08:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-10-24 19:08:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-10-24 19:08:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-10-24 19:08:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 19:08:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:08:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:08:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:08:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:08:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-10-24 19:08:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 19:08:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 19:08:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 19:08:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 19:08:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 19:08:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 19:08:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 19:08:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-24 19:08:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-24 19:08:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-24 19:08:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:08:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 19:08:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 19:08:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 19:08:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 19:08:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 19:08:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-24 19:08:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-24 19:08:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-24 19:08:05,067 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:08:05,331 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:08:05,333 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:08:05,603 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:08:05,603 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:08:05,736 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:08:05,737 INFO L314 CfgBuilder]: Removed 19 assume(true) statements. [2024-10-24 19:08:05,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:05 BoogieIcfgContainer [2024-10-24 19:08:05,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:08:05,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:08:05,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:08:05,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:08:05,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:08:03" (1/3) ... [2024-10-24 19:08:05,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fad30ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:08:05, skipping insertion in model container [2024-10-24 19:08:05,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:04" (2/3) ... [2024-10-24 19:08:05,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fad30ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:08:05, skipping insertion in model container [2024-10-24 19:08:05,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:05" (3/3) ... [2024-10-24 19:08:05,744 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-10-24 19:08:05,759 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:08:05,759 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-10-24 19:08:05,759 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:08:05,839 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:08:05,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 140 transitions, 294 flow [2024-10-24 19:08:05,919 INFO L124 PetriNetUnfolderBase]: 39/138 cut-off events. [2024-10-24 19:08:05,920 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:08:05,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 39/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 395 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 105. Up to 5 conditions per place. [2024-10-24 19:08:05,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 140 transitions, 294 flow [2024-10-24 19:08:05,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 137 transitions, 286 flow [2024-10-24 19:08:05,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:08:05,939 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=None, 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;@5c8ca921, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:08:05,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-10-24 19:08:05,941 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:08:05,941 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 19:08:05,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:05,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:05,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:08:05,943 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-10-24 19:08:05,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash 587239, now seen corresponding path program 1 times [2024-10-24 19:08:05,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:05,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882335284] [2024-10-24 19:08:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:05,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:06,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:06,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882335284] [2024-10-24 19:08:06,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882335284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:06,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:06,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:08:06,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580626523] [2024-10-24 19:08:06,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:06,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:06,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-10-24 19:08:06,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-10-24 19:08:06,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:06,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-10-24 19:08:06,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:06,549 INFO L124 PetriNetUnfolderBase]: 1073/3046 cut-off events. [2024-10-24 19:08:06,550 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-10-24 19:08:06,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4747 conditions, 3046 events. 1073/3046 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 26072 event pairs, 393 based on Foata normal form. 1045/3132 useless extension candidates. Maximal degree in co-relation 4538. Up to 885 conditions per place. [2024-10-24 19:08:06,569 INFO L140 encePairwiseOnDemand]: 112/140 looper letters, 64 selfloop transitions, 9 changer transitions 5/136 dead transitions. [2024-10-24 19:08:06,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 136 transitions, 438 flow [2024-10-24 19:08:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2024-10-24 19:08:06,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7761904761904762 [2024-10-24 19:08:06,583 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 286 flow. Second operand 3 states and 326 transitions. [2024-10-24 19:08:06,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 136 transitions, 438 flow [2024-10-24 19:08:06,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:08:06,590 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 253 flow [2024-10-24 19:08:06,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2024-10-24 19:08:06,594 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-10-24 19:08:06,595 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 253 flow [2024-10-24 19:08:06,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-10-24 19:08:06,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:06,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:06,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:08:06,596 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-10-24 19:08:06,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1256534116, now seen corresponding path program 1 times [2024-10-24 19:08:06,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:06,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963012191] [2024-10-24 19:08:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:06,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:06,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963012191] [2024-10-24 19:08:06,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963012191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:06,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:06,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:08:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516375335] [2024-10-24 19:08:06,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:06,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:06,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:06,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:06,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:06,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-10-24 19:08:06,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-10-24 19:08:06,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:06,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-10-24 19:08:06,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:07,060 INFO L124 PetriNetUnfolderBase]: 1177/2824 cut-off events. [2024-10-24 19:08:07,060 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-10-24 19:08:07,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5196 conditions, 2824 events. 1177/2824 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21708 event pairs, 843 based on Foata normal form. 0/2145 useless extension candidates. Maximal degree in co-relation 2039. Up to 1653 conditions per place. [2024-10-24 19:08:07,076 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 59 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2024-10-24 19:08:07,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 116 transitions, 403 flow [2024-10-24 19:08:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2024-10-24 19:08:07,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-10-24 19:08:07,078 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 253 flow. Second operand 3 states and 265 transitions. [2024-10-24 19:08:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 116 transitions, 403 flow [2024-10-24 19:08:07,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 116 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:08:07,082 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 246 flow [2024-10-24 19:08:07,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-10-24 19:08:07,083 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -13 predicate places. [2024-10-24 19:08:07,083 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 246 flow [2024-10-24 19:08:07,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 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) [2024-10-24 19:08:07,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:07,083 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:07,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:08:07,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-10-24 19:08:07,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1256534115, now seen corresponding path program 1 times [2024-10-24 19:08:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:07,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040025354] [2024-10-24 19:08:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:07,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:08:07,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 19:08:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:08:07,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 19:08:07,161 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 19:08:07,161 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2024-10-24 19:08:07,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2024-10-24 19:08:07,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2024-10-24 19:08:07,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2024-10-24 19:08:07,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2024-10-24 19:08:07,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2024-10-24 19:08:07,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2024-10-24 19:08:07,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2024-10-24 19:08:07,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2024-10-24 19:08:07,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (17 of 27 remaining) [2024-10-24 19:08:07,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2024-10-24 19:08:07,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2024-10-24 19:08:07,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2024-10-24 19:08:07,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2024-10-24 19:08:07,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2024-10-24 19:08:07,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2024-10-24 19:08:07,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2024-10-24 19:08:07,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2024-10-24 19:08:07,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2024-10-24 19:08:07,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2024-10-24 19:08:07,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2024-10-24 19:08:07,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2024-10-24 19:08:07,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2024-10-24 19:08:07,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2024-10-24 19:08:07,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2024-10-24 19:08:07,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2024-10-24 19:08:07,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2024-10-24 19:08:07,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 19:08:07,167 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-24 19:08:07,183 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 19:08:07,184 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 19:08:07,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:08:07 BasicIcfg [2024-10-24 19:08:07,188 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 19:08:07,189 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 19:08:07,189 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 19:08:07,189 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 19:08:07,189 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:05" (3/4) ... [2024-10-24 19:08:07,190 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-24 19:08:07,217 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 19:08:07,217 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 19:08:07,218 INFO L158 Benchmark]: Toolchain (without parser) took 3312.62ms. Allocated memory was 144.7MB in the beginning and 331.4MB in the end (delta: 186.6MB). Free memory was 73.5MB in the beginning and 163.5MB in the end (delta: -89.9MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. [2024-10-24 19:08:07,218 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 144.7MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:08:07,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 941.07ms. Allocated memory was 144.7MB in the beginning and 230.7MB in the end (delta: 86.0MB). Free memory was 73.3MB in the beginning and 152.2MB in the end (delta: -78.9MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2024-10-24 19:08:07,219 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.61ms. Allocated memory is still 230.7MB. Free memory was 152.2MB in the beginning and 149.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 19:08:07,219 INFO L158 Benchmark]: Boogie Preprocessor took 52.70ms. Allocated memory is still 230.7MB. Free memory was 149.0MB in the beginning and 144.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 19:08:07,219 INFO L158 Benchmark]: RCFGBuilder took 756.53ms. Allocated memory is still 230.7MB. Free memory was 144.8MB in the beginning and 186.4MB in the end (delta: -41.6MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2024-10-24 19:08:07,219 INFO L158 Benchmark]: TraceAbstraction took 1449.78ms. Allocated memory was 230.7MB in the beginning and 331.4MB in the end (delta: 100.7MB). Free memory was 185.4MB in the beginning and 166.6MB in the end (delta: 18.8MB). Peak memory consumption was 119.4MB. Max. memory is 16.1GB. [2024-10-24 19:08:07,220 INFO L158 Benchmark]: Witness Printer took 28.54ms. Allocated memory is still 331.4MB. Free memory was 166.6MB in the beginning and 163.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 19:08:07,221 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 144.7MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 941.07ms. Allocated memory was 144.7MB in the beginning and 230.7MB in the end (delta: 86.0MB). Free memory was 73.3MB in the beginning and 152.2MB in the end (delta: -78.9MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.61ms. Allocated memory is still 230.7MB. Free memory was 152.2MB in the beginning and 149.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.70ms. Allocated memory is still 230.7MB. Free memory was 149.0MB in the beginning and 144.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 756.53ms. Allocated memory is still 230.7MB. Free memory was 144.8MB in the beginning and 186.4MB in the end (delta: -41.6MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1449.78ms. Allocated memory was 230.7MB in the beginning and 331.4MB in the end (delta: 100.7MB). Free memory was 185.4MB in the beginning and 166.6MB in the end (delta: 18.8MB). Peak memory consumption was 119.4MB. Max. memory is 16.1GB. * Witness Printer took 28.54ms. Allocated memory is still 331.4MB. Free memory was 166.6MB in the beginning and 163.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1797] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1797] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1797] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1797] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1797] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1797] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1798] 0 long counter; [L1799] 0 time_t end_time; [L1836] 0 int status; [L1837] 0 pthread_t counter_thread_id; [L1838] 0 pthread_t monitor_thread_id; [L1839] 0 time_t current_time = time (((void *)0)); [L1840] COND FALSE 0 !(current_time > 2147483647 - 60) [L1843] 0 end_time = current_time + 60 [L1844] EXPR, FCALL, FORK 0 pthread_create (&counter_thread_id, ((void *)0), counter_thread, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=1150, \old(argv)={1152:1153}, argc=1150, counter=0, counter_thread_id=0, current_time=-60, end_time=0, mutex={1:0}] [L1844] 0 status = pthread_create (&counter_thread_id, ((void *)0), counter_thread, ((void *)0)) [L1845] COND TRUE 0 status != 0 VAL [\old(arg)={0:0}, counter=0, end_time=0, mutex={1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1835]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1844]: 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: 1847]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 159 locations, 27 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: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 142 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 234 IncrementalHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 19 mSDtfsCounter, 234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-10-24 19:08:07,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)