./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.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 7f7f7b6ea5abe354543dc816b244a5041021350ff4076c6fd52a8208b97eac31 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:22:22,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:22:22,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:22:22,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:22:22,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:22:22,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:22:22,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:22:22,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:22:22,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:22:22,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:22:22,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:22:22,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:22:22,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:22:22,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:22:22,675 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:22:22,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:22:22,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:22:22,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:22:22,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:22:22,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:22:22,677 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:22:22,678 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:22:22,678 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:22:22,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:22:22,679 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:22:22,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:22:22,680 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:22:22,680 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:22:22,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:22:22,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:22:22,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:22:22,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:22:22,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:22:22,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:22:22,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:22:22,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:22:22,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:22:22,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:22:22,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:22:22,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:22:22,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:22:22,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:22:22,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f7f7b6ea5abe354543dc816b244a5041021350ff4076c6fd52a8208b97eac31 [2024-11-19 09:22:22,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:22:22,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:22:22,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:22:22,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:22:22,979 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:22:22,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2024-11-19 09:22:24,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:22:24,734 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:22:24,735 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2024-11-19 09:22:24,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc973011b/6a16fbc672884e90b856269e44e22a0a/FLAG05f8246f8 [2024-11-19 09:22:25,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc973011b/6a16fbc672884e90b856269e44e22a0a [2024-11-19 09:22:25,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:22:25,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:22:25,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:22:25,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:22:25,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:22:25,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:25,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@431d8e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25, skipping insertion in model container [2024-11-19 09:22:25,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:25,135 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:22:25,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:22:25,622 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:22:25,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:22:25,742 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:22:25,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25 WrapperNode [2024-11-19 09:22:25,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:22:25,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:22:25,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:22:25,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:22:25,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:25,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:25,871 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 2112 [2024-11-19 09:22:25,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:22:25,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:22:25,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:22:25,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:22:25,884 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:25,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:25,895 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:26,030 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 12, 6, 4]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 2, 1, 1]. The 9 writes are split as follows [0, 5, 2, 2]. [2024-11-19 09:22:26,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:26,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:26,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:26,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:26,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:26,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:26,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:22:26,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:22:26,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:22:26,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:22:26,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:25" (1/1) ... [2024-11-19 09:22:26,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:22:26,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:22:26,198 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) [2024-11-19 09:22:26,204 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 [2024-11-19 09:22:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:22:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:22:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 09:22:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 09:22:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 09:22:26,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 09:22:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:22:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:22:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 09:22:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 09:22:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:22:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:22:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 09:22:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 09:22:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:22:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:22:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 09:22:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 09:22:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:22:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:22:26,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:22:26,255 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:22:26,425 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:22:26,428 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:22:28,200 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:22:28,201 INFO L287 CfgBuilder]: Performing block encoding