./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd --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 572f30a11eb1875d022a7591921c07965188882988e15e9eab6f0a68b203b580 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:30:23,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:30:23,206 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:30:23,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:30:23,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:30:23,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:30:23,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:30:23,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:30:23,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:30:23,239 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:30:23,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:30:23,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:30:23,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:30:23,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:30:23,240 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:30:23,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:30:23,241 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:30:23,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:30:23,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:30:23,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:30:23,242 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:30:23,242 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:30:23,242 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:30:23,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:30:23,242 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:30:23,242 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:30:23,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:30:23,243 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:30:23,243 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:30:23,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:30:23,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:30:23,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:30:23,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:30:23,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:30:23,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:30:23,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:30:23,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:30:23,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:30:23,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:30:23,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:30:23,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:30:23,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:30:23,245 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd 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 -> 572f30a11eb1875d022a7591921c07965188882988e15e9eab6f0a68b203b580 [2024-11-13 15:30:23,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:30:23,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:30:23,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:30:23,598 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:30:23,598 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:30:23,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-ext/25_stack_longest-2.i Unable to find full path for "g++" [2024-11-13 15:30:25,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:30:26,239 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:30:26,240 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/sv-benchmarks/c/pthread-ext/25_stack_longest-2.i [2024-11-13 15:30:26,273 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/data/62c6c256e/cd9afec577de4319b0b4199020c955d2/FLAG18e8d2e54 [2024-11-13 15:30:26,308 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/data/62c6c256e/cd9afec577de4319b0b4199020c955d2 [2024-11-13 15:30:26,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:30:26,315 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:30:26,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:30:26,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:30:26,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:30:26,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:30:26" (1/1) ... [2024-11-13 15:30:26,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d01469a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:26, skipping insertion in model container [2024-11-13 15:30:26,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:30:26" (1/1) ... [2024-11-13 15:30:26,385 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:30:26,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:30:27,061 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:30:27,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:30:27,223 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:30:27,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27 WrapperNode [2024-11-13 15:30:27,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:30:27,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:30:27,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:30:27,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:30:27,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,375 INFO L138 Inliner]: procedures = 174, calls = 42, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 2061 [2024-11-13 15:30:27,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:30:27,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:30:27,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:30:27,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:30:27,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,437 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 8, 8]. 44 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 8, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-11-13 15:30:27,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:30:27,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:30:27,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:30:27,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:30:27,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:30:27" (1/1) ... [2024-11-13 15:30:27,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:30:27,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:27,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:30:27,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c7db99-e9f8-46cd-b4c2-48f98085e86e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:30:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 15:30:27,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 15:30:27,726 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 15:30:27,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 15:30:27,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:30:27,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:30:27,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:30:27,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 15:30:27,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:30:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:30:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:30:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 15:30:27,730 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 15:30:27,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:30:27,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:30:27,733 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:30:28,037 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:30:28,040 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:30:30,912 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:30:30,913 INFO L287 CfgBuilder]: Performing block encoding