./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-programs/Problem103_label50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/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_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-programs/Problem103_label50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91 --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 bccc4c8de413c9dd734be1e3ed9d72294c012c56a7e84ec0d648e66e97e0339d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:19:43,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:19:43,844 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:19:43,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:19:43,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:19:43,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:19:43,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:19:43,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:19:43,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:19:43,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:19:43,898 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:19:43,899 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:19:43,909 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:19:43,911 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:19:43,912 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:19:43,912 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:19:43,913 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:19:43,913 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:19:43,913 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:19:43,914 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:19:43,914 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:19:43,915 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:19:43,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:19:43,917 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:19:43,917 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:19:43,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:19:43,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:19:43,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:19:43,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:19:43,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:19:43,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:19:43,921 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:19:43,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:19:43,922 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:19:43,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:19:43,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:19:43,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:19:43,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:19:43,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:19:43,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:19:43,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:19:43,925 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:19:43,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:19:43,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:19:43,926 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:19:43,926 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:19:43,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:19:43,926 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_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bccc4c8de413c9dd734be1e3ed9d72294c012c56a7e84ec0d648e66e97e0339d [2023-11-24 23:19:44,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:19:44,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:19:44,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:19:44,291 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:19:44,291 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:19:44,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/eca-programs/Problem103_label50.c [2023-11-24 23:19:47,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:19:51,465 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:19:51,466 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/sv-benchmarks/c/eca-programs/Problem103_label50.c [2023-11-24 23:19:51,803 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91/data/24ae54ada/97886d7881434e2bb974b086fc6dbb4b/FLAGe3abe2e3e [2023-11-24 23:19:51,821 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/bin/utaipan-verify-SwPr7d2a91/data/24ae54ada/97886d7881434e2bb974b086fc6dbb4b [2023-11-24 23:19:51,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:19:51,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:19:51,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:19:51,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:19:51,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:19:51,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:19:51" (1/1) ... [2023-11-24 23:19:51,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c159832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:51, skipping insertion in model container [2023-11-24 23:19:51,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:19:51" (1/1) ... [2023-11-24 23:19:54,754 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:20:27,529 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_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/sv-benchmarks/c/eca-programs/Problem103_label50.c[6307260,6307273] [2023-11-24 23:20:27,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:27,685 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:20:44,622 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_ff0f22b3-bed6-4760-857a-0d4462d1fc1c/sv-benchmarks/c/eca-programs/Problem103_label50.c[6307260,6307273] [2023-11-24 23:20:44,630 INFO L209 PostProcessor]: Analyzing one entry point: main