./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/coreutils-v8.31/comm_3args_ok.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/coreutils-v8.31/comm_3args_ok.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire --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 64bit --witnessprinter.graph.data.programhash ea70f0d13343110b380d6edcf93997d411eb6cc49dcf420cf65d9af4b624108c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:40:12,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:40:12,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-11-23 20:40:12,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:40:12,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:40:12,185 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:40:12,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:40:12,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:40:12,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:40:12,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:40:12,193 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:40:12,195 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:40:12,195 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:40:12,197 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:40:12,198 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:40:12,198 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:40:12,199 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:40:12,199 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:40:12,199 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:40:12,200 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:40:12,201 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:40:12,201 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:40:12,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:40:12,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:40:12,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:40:12,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:40:12,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:40:12,204 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:40:12,205 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:40:12,205 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:40:12,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:40:12,206 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:40:12,206 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:40:12,206 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:40:12,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:40:12,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:40:12,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:40:12,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:12,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:40:12,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:40:12,208 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:40:12,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:40:12,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:40:12,209 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:40:12,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:40:12,210 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_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea70f0d13343110b380d6edcf93997d411eb6cc49dcf420cf65d9af4b624108c [2023-11-23 20:40:12,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:40:12,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:40:12,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:40:12,522 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:40:12,522 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:40:12,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/coreutils-v8.31/comm_3args_ok.c [2023-11-23 20:40:15,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:40:19,680 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:40:19,681 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/sv-benchmarks/c/coreutils-v8.31/comm_3args_ok.c [2023-11-23 20:40:20,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/data/da9d35d05/9ec692e2dfdd47ab9e4b5f6eb22a1629/FLAGe61dcc1a9 [2023-11-23 20:40:20,141 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13738aac-1742-4558-afc5-acb7fdf1764e/bin/utaipan-verify-mE87zJ7Ire/data/da9d35d05/9ec692e2dfdd47ab9e4b5f6eb22a1629 [2023-11-23 20:40:20,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:40:20,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:40:20,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:20,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:40:20,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:40:20,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:20" (1/1) ... [2023-11-23 20:40:20,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462feec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:20, skipping insertion in model container [2023-11-23 20:40:20,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:20" (1/1) ... [2023-11-23 20:40:31,041 INFO L177 MainTranslator]: Built tables and reachable declarations