./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 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f7f7b6ea5abe354543dc816b244a5041021350ff4076c6fd52a8208b97eac31 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:34:21,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:34:21,197 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:34:21,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:34:21,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:34:21,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:34:21,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:34:21,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:34:21,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:34:21,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:34:21,246 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:34:21,247 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:34:21,247 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:34:21,247 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:34:21,248 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:34:21,252 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:34:21,252 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:34:21,252 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:34:21,253 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:34:21,253 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:34:21,253 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:34:21,254 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:34:21,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:34:21,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:34:21,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:34:21,257 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:34:21,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:34:21,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:34:21,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:34:21,258 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:34:21,258 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:34:21,258 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:34:21,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:34:21,259 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:34:21,259 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:34:21,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:34:21,260 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:34:21,261 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:34:21,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:34:21,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:34:21,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:34:21,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:34:21,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:34:21,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:34:21,264 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:34:21,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:34:21,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:34:21,265 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:34:21,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:34:21,265 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f7f7b6ea5abe354543dc816b244a5041021350ff4076c6fd52a8208b97eac31 [2024-11-02 12:34:21,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:34:21,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:34:21,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:34:21,639 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:34:21,639 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:34:21,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i Unable to find full path for "g++" [2024-11-02 12:34:23,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:34:24,063 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:34:24,064 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2024-11-02 12:34:24,081 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/data/63d6d8dff/b7b03bd49f9149c798c80a75be28abb0/FLAG500c70788 [2024-11-02 12:34:24,312 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/data/63d6d8dff/b7b03bd49f9149c798c80a75be28abb0 [2024-11-02 12:34:24,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:34:24,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:34:24,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:24,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:34:24,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:34:24,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4933d48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24, skipping insertion in model container [2024-11-02 12:34:24,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,397 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:34:24,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:24,991 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:34:25,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:25,133 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:34:25,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25 WrapperNode [2024-11-02 12:34:25,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:25,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:25,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:34:25,136 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:34:25,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,323 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 2112 [2024-11-02 12:34:25,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:25,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:34:25,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:34:25,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:34:25,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:34:25,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:34:25,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:34:25,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:34:25,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:25" (1/1) ... [2024-11-02 12:34:25,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:34:25,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:25,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:34:25,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d08594b-d4d5-4510-85a0-99af41eeb0d9/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:34:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:34:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-02 12:34:25,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-02 12:34:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:34:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 12:34:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:34:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:34:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:34:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:34:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 12:34:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:34:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:34:25,632 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:34:25,828 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:34:25,831 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:34:28,632 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:34:28,632 INFO L287 CfgBuilder]: Performing block encoding