./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem102_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem102_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a0674d28ea4eb900bb2edd7354f82733a34c86db849a20d7f4694acf3a851db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:58:32,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:58:33,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:58:33,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:58:33,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:58:33,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:58:33,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:58:33,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:58:33,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:58:33,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:58:33,190 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:58:33,192 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:58:33,192 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:58:33,194 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:58:33,195 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:58:33,195 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:58:33,196 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:58:33,196 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:58:33,197 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:58:33,197 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:58:33,198 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:58:33,199 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:58:33,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:58:33,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:58:33,201 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:58:33,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:58:33,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:58:33,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:58:33,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:58:33,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:58:33,206 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:58:33,206 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:58:33,206 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:58:33,207 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:58:33,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:58:33,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:58:33,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:33,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:58:33,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:58:33,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:58:33,209 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:58:33,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:58:33,210 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:58:33,210 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:58:33,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:58:33,211 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_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a0674d28ea4eb900bb2edd7354f82733a34c86db849a20d7f4694acf3a851db [2023-11-12 00:58:33,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:58:33,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:58:33,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:58:33,636 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:58:33,636 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:58:33,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/eca-programs/Problem102_label04.c [2023-11-12 00:58:37,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:58:40,904 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:58:40,905 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/sv-benchmarks/c/eca-programs/Problem102_label04.c [2023-11-12 00:58:41,512 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/data/c6eb86053/76f96cea24e34456b389d1ca98497651/FLAGb409f1ff9 [2023-11-12 00:58:41,568 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/bin/utaipan-verify-NcY6lQBIFX/data/c6eb86053/76f96cea24e34456b389d1ca98497651 [2023-11-12 00:58:41,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:58:41,604 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:58:41,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:41,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:58:41,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:58:41,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:41" (1/1) ... [2023-11-12 00:58:41,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b69b8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:41, skipping insertion in model container [2023-11-12 00:58:41,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:41" (1/1) ... [2023-11-12 00:58:43,507 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:59:10,878 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/sv-benchmarks/c/eca-programs/Problem102_label04.c[5710364,5710377] [2023-11-12 00:59:11,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:11,030 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:59:26,788 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9646f9ae-3089-4e10-8b1b-d04bbc252672/sv-benchmarks/c/eca-programs/Problem102_label04.c[5710364,5710377] [2023-11-12 00:59:26,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:32,179 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:59:32,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:32 WrapperNode [2023-11-12 00:59:32,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:32,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:59:32,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:59:32,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:59:32,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:32" (1/1) ... [2023-11-12 00:59:33,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:32" (1/1) ...