./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 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e58d7f1f699ed489e778ac486d67f22936f81ae8faf9ccd7ef1f41eb68480e6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 11:36:23,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 11:36:23,488 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2024-11-23 11:36:23,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 11:36:23,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 11:36:23,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 11:36:23,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 11:36:23,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 11:36:23,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 11:36:23,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 11:36:23,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 11:36:23,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 11:36:23,542 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 11:36:23,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 11:36:23,542 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 11:36:23,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 11:36:23,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 11:36:23,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 11:36:23,545 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 11:36:23,545 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 11:36:23,545 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 11:36:23,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 11:36:23,545 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 11:36:23,545 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 11:36:23,545 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 11:36:23,546 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 11:36:23,546 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 11:36:23,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 11:36:23,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 11:36:23,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 11:36:23,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 11:36:23,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-23 11:36:23,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 11:36:23,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 11:36:23,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 11:36:23,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 11:36:23,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 11:36:23,547 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2024-11-23 11:36:23,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-23 11:36:23,547 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-23 11:36:23,547 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-23 11:36:23,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca 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 -> GemCutter 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 [2024-11-23 11:36:23,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 11:36:23,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 11:36:23,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 11:36:23,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 11:36:23,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 11:36:23,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/../../sv-benchmarks/c/pthread-ext/25_stack_longest-1.i [2024-11-23 11:36:27,290 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/data/ce9921577/e136b14add084d10b807b0b505479c69/FLAGe4ad861c7 [2024-11-23 11:36:27,701 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 11:36:27,702 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/sv-benchmarks/c/pthread-ext/25_stack_longest-1.i [2024-11-23 11:36:27,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/data/ce9921577/e136b14add084d10b807b0b505479c69/FLAGe4ad861c7 [2024-11-23 11:36:27,738 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/data/ce9921577/e136b14add084d10b807b0b505479c69 [2024-11-23 11:36:27,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 11:36:27,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 11:36:27,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 11:36:27,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 11:36:27,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 11:36:27,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:36:27" (1/1) ... [2024-11-23 11:36:27,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386efbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:27, skipping insertion in model container [2024-11-23 11:36:27,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:36:27" (1/1) ... [2024-11-23 11:36:27,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 11:36:28,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 11:36:28,375 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 11:36:28,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 11:36:28,502 INFO L204 MainTranslator]: Completed translation [2024-11-23 11:36:28,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28 WrapperNode [2024-11-23 11:36:28,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 11:36:28,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 11:36:28,508 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 11:36:28,508 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 11:36:28,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,636 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 2055 [2024-11-23 11:36:28,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 11:36:28,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 11:36:28,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 11:36:28,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 11:36:28,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,720 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 11:36:28,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 11:36:28,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 11:36:28,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 11:36:28,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:36:28" (1/1) ... [2024-11-23 11:36:28,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-23 11:36:28,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/z3 [2024-11-23 11:36:28,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-23 11:36:28,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e8aed26-1f80-49d3-8ed2-343b14212675/bin/ugemcutter-verify-Z6otQMs9Ca/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-23 11:36:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-23 11:36:28,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-23 11:36:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 11:36:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 11:36:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 11:36:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-23 11:36:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 11:36:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 11:36:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 11:36:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 11:36:28,891 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 11:36:29,040 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 11:36:29,043 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 11:36:31,788 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 11:36:31,788 INFO L283 CfgBuilder]: Performing block encoding