./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/coreutils-v8.31/ln_3args_ok.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/coreutils-v8.31/ln_3args_ok.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5 --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 2b948ae899c5f7eb255bceb0bada05db92976300838d7a38ada86e22cac94852 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:53:12,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:53:13,105 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-21 19:53:13,111 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:53:13,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:53:13,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:53:13,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:53:13,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:53:13,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:53:13,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:53:13,143 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:53:13,144 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:53:13,144 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:53:13,145 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:53:13,145 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:53:13,146 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:53:13,147 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:53:13,147 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:53:13,148 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:53:13,148 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:53:13,149 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:53:13,149 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:53:13,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:53:13,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:53:13,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:53:13,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:53:13,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:53:13,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:53:13,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:53:13,153 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 19:53:13,154 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:53:13,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:53:13,154 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:53:13,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:53:13,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:53:13,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:53:13,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:53:13,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:53:13,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:53:13,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:53:13,157 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:53:13,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:53:13,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:53:13,158 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:53:13,158 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:53:13,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:53:13,158 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_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b948ae899c5f7eb255bceb0bada05db92976300838d7a38ada86e22cac94852 [2023-11-21 19:53:13,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:53:13,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:53:13,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:53:13,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:53:13,521 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:53:13,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/coreutils-v8.31/ln_3args_ok.c [2023-11-21 19:53:16,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:53:21,248 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:53:21,249 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/sv-benchmarks/c/coreutils-v8.31/ln_3args_ok.c [2023-11-21 19:53:22,233 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/data/d384b2242/b684d0752e774fd8b33f6c0810b6ad2b/FLAG1827c5c3e [2023-11-21 19:53:22,261 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b8ce89-9ad7-4b37-9ba7-e2c2f50aab23/bin/utaipan-verify-QoSU8krkJ5/data/d384b2242/b684d0752e774fd8b33f6c0810b6ad2b [2023-11-21 19:53:22,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:53:22,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:53:22,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:53:22,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:53:22,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:53:22,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:53:22" (1/1) ... [2023-11-21 19:53:22,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fef82e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:53:22, skipping insertion in model container [2023-11-21 19:53:22,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:53:22" (1/1) ... [2023-11-21 19:53:34,647 INFO L177 MainTranslator]: Built tables and reachable declarations