./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/coreutils-v8.31/comm_3args_ok.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/coreutils-v8.31/comm_3args_ok.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ea70f0d13343110b380d6edcf93997d411eb6cc49dcf420cf65d9af4b624108c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:48:46,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:48:46,166 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:48:46,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:48:46,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:48:46,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:48:46,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:48:46,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:48:46,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:48:46,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:48:46,199 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:48:46,200 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:48:46,200 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:48:46,201 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:48:46,201 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:48:46,202 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:48:46,202 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:48:46,203 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:48:46,203 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:48:46,204 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:48:46,204 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:48:46,205 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:48:46,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:48:46,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:48:46,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:48:46,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:48:46,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:48:46,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:48:46,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:48:46,208 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:48:46,209 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:48:46,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:48:46,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:48:46,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:48:46,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:48:46,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:48:46,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:46,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:48:46,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:48:46,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:48:46,212 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:48:46,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:48:46,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:48:46,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:48:46,212 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:48:46,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:48:46,213 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_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea70f0d13343110b380d6edcf93997d411eb6cc49dcf420cf65d9af4b624108c [2023-11-24 23:48:46,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:48:46,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:48:46,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:48:46,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:48:46,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:48:46,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/coreutils-v8.31/comm_3args_ok.c [2023-11-24 23:48:49,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:48:54,336 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:48:54,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/sv-benchmarks/c/coreutils-v8.31/comm_3args_ok.c [2023-11-24 23:48:54,801 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/data/1267cad02/a3885fa4192b4cdc95a4c1a060cae8af/FLAG8be6126d0 [2023-11-24 23:48:54,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c05a53bc-6dbb-4b53-a789-4c491b380e67/bin/utaipan-verify-SwPr7d2a91/data/1267cad02/a3885fa4192b4cdc95a4c1a060cae8af [2023-11-24 23:48:54,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:48:54,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:48:54,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:54,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:48:54,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:48:54,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:54" (1/1) ... [2023-11-24 23:48:54,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c40c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:54, skipping insertion in model container [2023-11-24 23:48:54,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:54" (1/1) ... [2023-11-24 23:49:06,152 INFO L177 MainTranslator]: Built tables and reachable declarations