./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem102_label16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/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_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem102_label16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire --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 45e711acbc98fb4a3ec7df07b1a3607953c12752cde722d830cf622bfacd65c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:16,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:16,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:18:16,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:16,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:16,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:16,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:16,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:16,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:16,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:16,951 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:16,951 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:16,952 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:16,954 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:18:16,954 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:16,955 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:16,955 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:18:16,955 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:18:16,956 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:16,956 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:18:16,958 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:18:16,959 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:18:16,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:16,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:16,962 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:18:16,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:18:16,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:18:16,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:16,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:16,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:16,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:16,966 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:18:16,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:16,967 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:16,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:16,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:16,968 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:16,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:16,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:16,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:16,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:16,969 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:18:16,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:18:16,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:16,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:16,971 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:16,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:16,972 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_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45e711acbc98fb4a3ec7df07b1a3607953c12752cde722d830cf622bfacd65c8 [2023-11-23 21:18:17,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:17,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:17,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:17,356 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:17,356 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:17,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/eca-programs/Problem102_label16.c [2023-11-23 21:18:20,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:24,217 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:24,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/sv-benchmarks/c/eca-programs/Problem102_label16.c [2023-11-23 21:18:24,679 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire/data/8de15b944/e8c0f0deb2364d21ac48c3f5d7be1895/FLAG41ca60e38 [2023-11-23 21:18:24,695 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/bin/utaipan-verify-mE87zJ7Ire/data/8de15b944/e8c0f0deb2364d21ac48c3f5d7be1895 [2023-11-23 21:18:24,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:24,704 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:24,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:24,706 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:24,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:24,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:24" (1/1) ... [2023-11-23 21:18:24,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f03720d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:24, skipping insertion in model container [2023-11-23 21:18:24,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:24" (1/1) ... [2023-11-23 21:18:26,609 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:54,764 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_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/sv-benchmarks/c/eca-programs/Problem102_label16.c[5713570,5713583] [2023-11-23 21:18:54,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:54,978 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:19:11,046 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_1b24cdd5-5e41-46b7-9443-f5ca2e841a0d/sv-benchmarks/c/eca-programs/Problem102_label16.c[5713570,5713583] [2023-11-23 21:19:11,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:19:16,188 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:19:16,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:16 WrapperNode [2023-11-23 21:19:16,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:19:16,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:19:16,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:19:16,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:19:16,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:19:16" (1/1) ...