./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --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 fdc120a35f3e4d083158deea32322882faa73723d02c89f45ae81ad994f702e9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:31:35,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:31:35,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:31:35,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:31:35,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:31:35,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:31:35,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:31:35,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:31:35,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:31:35,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:31:35,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:31:35,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:31:35,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:31:35,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:31:35,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:31:35,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:31:35,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:31:35,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:31:35,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:31:35,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:31:35,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:31:35,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:31:35,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:31:35,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:31:35,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:31:35,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:31:35,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:31:35,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:31:35,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:31:35,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:31:35,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:31:35,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:31:35,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:31:35,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:31:35,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:31:35,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:31:35,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:31:35,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:31:35,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:31:35,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:31:35,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:31:35,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:31:35,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:31:35,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:31:35,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:31:35,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:31:35,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:31:35,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:31:35,480 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:31:35,481 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:31:35,481 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:31:35,481 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:31:35,481 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:31:35,481 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:31:35,482 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:31:35,482 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:31:35,482 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:31:35,482 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:31:35,482 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:31:35,482 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:31:35,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:31:35,483 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:31:35,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:31:35,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:31:35,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:31:35,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:31:35,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:31:35,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:31:35,485 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:31:35,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:31:35,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:31:35,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:31:35,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:31:35,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:31:35,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:31:35,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:31:35,486 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:31:35,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:31:35,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:31:35,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:31:35,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:31:35,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:31:35,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:31:35,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc120a35f3e4d083158deea32322882faa73723d02c89f45ae81ad994f702e9 [2022-11-19 07:31:35,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:31:35,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:31:35,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:31:35,818 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:31:35,819 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:31:35,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/eca-rers2018/Problem18.c [2022-11-19 07:31:35,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/data/cbb6b2efe/3e62df9da5574b97a16815db992f4548/FLAG1fb47d60b [2022-11-19 07:31:48,077 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:31:48,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/sv-benchmarks/c/eca-rers2018/Problem18.c [2022-11-19 07:31:50,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/data/cbb6b2efe/3e62df9da5574b97a16815db992f4548/FLAG1fb47d60b [2022-11-19 07:31:50,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b47b1c-2277-4053-aeca-8941abb9309c/bin/utaipan-I9t0OCRTmS/data/cbb6b2efe/3e62df9da5574b97a16815db992f4548 [2022-11-19 07:31:50,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:31:50,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:31:50,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:31:50,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:31:50,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:31:50,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:31:50" (1/1) ... [2022-11-19 07:31:50,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bf764a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:31:50, skipping insertion in model container [2022-11-19 07:31:50,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:31:50" (1/1) ... [2022-11-19 07:31:50,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:31:55,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:31:58,624 WARN L234 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_d9b47b1c-2277-4053-aeca-8941abb9309c/sv-benchmarks/c/eca-rers2018/Problem18.c[778,791] [2022-11-19 07:31:59,071 WARN L234 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_d9b47b1c-2277-4053-aeca-8941abb9309c/sv-benchmarks/c/eca-rers2018/Problem18.c[817,830]