./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 7e58d7f1f699ed489e778ac486d67f22936f81ae8faf9ccd7ef1f41eb68480e6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:36:28,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:36:28,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:36:28,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:36:28,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:36:28,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:36:28,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:36:28,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:36:28,976 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:36:28,976 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:36:28,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:36:28,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:36:28,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:36:28,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:36:28,977 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:36:28,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:36:28,978 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:36:28,979 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:36:28,979 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:36:28,979 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:36:28,979 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:36:28,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:36:28,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:36:28,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:36:28,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:36:28,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:36:28,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:36:28,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:36:28,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:36:28,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:36:28,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:36:28,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:36:28,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:36:28,980 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 -> 7e58d7f1f699ed489e778ac486d67f22936f81ae8faf9ccd7ef1f41eb68480e6 [2025-02-06 12:36:29,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:36:29,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:36:29,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:36:29,265 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:36:29,265 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:36:29,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i [2025-02-06 12:36:30,470 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/63ff6c856/24253717b9eb4b298387e059cbb44169/FLAG90f7e2fc0 [2025-02-06 12:36:30,769 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:36:30,770 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longest-1.i [2025-02-06 12:36:30,788 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/63ff6c856/24253717b9eb4b298387e059cbb44169/FLAG90f7e2fc0 [2025-02-06 12:36:30,808 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/63ff6c856/24253717b9eb4b298387e059cbb44169 [2025-02-06 12:36:30,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:36:30,812 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:36:30,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:36:30,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:36:30,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:36:30,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:36:30" (1/1) ... [2025-02-06 12:36:30,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7a3495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:30, skipping insertion in model container [2025-02-06 12:36:30,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:36:30" (1/1) ... [2025-02-06 12:36:30,861 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:36:31,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:36:31,233 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:36:31,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:36:31,320 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:36:31,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31 WrapperNode [2025-02-06 12:36:31,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:36:31,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:36:31,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:36:31,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:36:31,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,405 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 2051 [2025-02-06 12:36:31,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:36:31,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:36:31,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:36:31,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:36:31,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,468 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-02-06 12:36:31,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,505 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:36:31,538 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:36:31,539 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:36:31,539 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:36:31,540 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:31" (1/1) ... [2025-02-06 12:36:31,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:36:31,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:36:31,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:36:31,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:36:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 12:36:31,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 12:36:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 12:36:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 12:36:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:36:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:36:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 12:36:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 12:36:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 12:36:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 12:36:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:36:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:36:31,592 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:36:31,707 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:36:31,709 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:36:33,283 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:36:33,283 INFO L308 CfgBuilder]: Performing block encoding