./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/queue_longest.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_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/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_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/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_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:28:31,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:28:31,327 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:28:31,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:28:31,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:28:31,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:28:31,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:28:31,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:28:31,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:28:31,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:28:31,384 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:28:31,384 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:28:31,384 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:28:31,385 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:28:31,387 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:28:31,387 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:28:31,390 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:28:31,391 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:28:31,391 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:28:31,391 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:28:31,391 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:28:31,395 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:28:31,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:28:31,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:28:31,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:28:31,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:28:31,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:28:31,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:28:31,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:28:31,399 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:28:31,399 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:28:31,399 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:28:31,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:28:31,400 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:28:31,401 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:28:31,401 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:28:31,402 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:28:31,402 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:28:31,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:28:31,402 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:28:31,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:28:31,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:28:31,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:28:31,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:28:31,404 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:28:31,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:28:31,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:28:31,405 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:28:31,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:28:31,405 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_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2024-11-02 12:28:31,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:28:31,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:28:31,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:28:31,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:28:31,775 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:28:31,776 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread/queue_longest.i Unable to find full path for "g++" [2024-11-02 12:28:34,195 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:28:34,544 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:28:34,545 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/sv-benchmarks/c/pthread/queue_longest.i [2024-11-02 12:28:34,569 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/data/8bb12e34e/bf29837088c541e0af47917d03853aec/FLAG8c57e02dd [2024-11-02 12:28:34,590 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/data/8bb12e34e/bf29837088c541e0af47917d03853aec [2024-11-02 12:28:34,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:28:34,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:28:34,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:28:34,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:28:34,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:28:34,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:34" (1/1) ... [2024-11-02 12:28:34,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e67eed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:34, skipping insertion in model container [2024-11-02 12:28:34,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:28:34" (1/1) ... [2024-11-02 12:28:34,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:28:35,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:28:35,618 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:28:35,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:28:35,889 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:28:35,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35 WrapperNode [2024-11-02 12:28:35,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:28:35,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:28:35,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:28:35,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:28:35,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:35,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,157 INFO L138 Inliner]: procedures = 274, calls = 1659, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1846 [2024-11-02 12:28:36,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:28:36,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:28:36,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:28:36,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:28:36,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,227 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,310 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:28:36,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:28:36,322 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:28:36,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:28:36,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:28:35" (1/1) ... [2024-11-02 12:28:36,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:28:36,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:36,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:28:36,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4567b6-274d-4aff-ab3c-3609dbfd6fe7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:28:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-02 12:28:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-02 12:28:36,446 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-02 12:28:36,446 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-02 12:28:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-02 12:28:36,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:28:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:28:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-02 12:28:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:28:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:28:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:28:36,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:28:36,460 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 12:28:36,672 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:28:36,673 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:28:39,389 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:28:39,389 INFO L287 CfgBuilder]: Performing block encoding