./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --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 7dd2ebae3e4efedbc7c5167fcbd380e697a52b1008674458a69e2697e3b8a545 --- 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-38b53e6 [2022-11-26 00:34:44,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:34:44,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:34:44,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:34:44,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:34:44,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:34:44,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:34:44,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:34:44,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:34:44,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:34:44,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:34:44,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:34:44,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:34:44,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:34:44,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:34:44,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:34:44,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:34:44,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:34:44,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:34:44,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:34:44,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:34:44,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:34:44,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:34:44,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:34:44,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:34:44,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:34:44,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:34:44,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:34:44,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:34:44,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:34:44,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:34:44,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:34:44,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:34:44,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:34:44,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:34:44,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:34:44,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:34:44,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:34:44,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:34:44,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:34:44,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:34:44,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 00:34:44,579 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:34:44,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:34:44,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:34:44,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:34:44,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:34:44,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:34:44,581 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:34:44,582 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:34:44,582 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:34:44,582 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:34:44,583 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:34:44,583 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:34:44,583 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:34:44,584 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:34:44,584 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:34:44,584 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:34:44,585 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:34:44,585 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:34:44,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:34:44,586 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:34:44,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:34:44,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:34:44,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:34:44,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:34:44,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:34:44,588 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:34:44,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:34:44,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:34:44,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:34:44,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:34:44,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:34:44,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:34:44,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:34:44,590 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:34:44,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:34:44,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:34:44,591 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:34:44,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:34:44,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:34:44,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:34:44,592 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_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd2ebae3e4efedbc7c5167fcbd380e697a52b1008674458a69e2697e3b8a545 [2022-11-26 00:34:44,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:34:44,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:34:44,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:34:44,880 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:34:44,880 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:34:44,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2022-11-26 00:34:47,933 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:34:48,332 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:34:48,333 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2022-11-26 00:34:48,356 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/data/f0c09ecae/27d8c6d2ac754583a4cfcd3a0e8dd865/FLAGab9245388 [2022-11-26 00:34:48,372 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/data/f0c09ecae/27d8c6d2ac754583a4cfcd3a0e8dd865 [2022-11-26 00:34:48,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:34:48,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:34:48,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:34:48,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:34:48,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:34:48,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:34:48" (1/1) ... [2022-11-26 00:34:48,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cba9988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:48, skipping insertion in model container [2022-11-26 00:34:48,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:34:48" (1/1) ... [2022-11-26 00:34:48,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:34:48,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:34:48,940 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:34:49,578 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:34:49,584 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:34:49,587 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:34:49,590 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:34:49,591 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:34:49,620 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:34:49,623 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:34:49,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:34:49,640 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:34:49,662 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:34:49,707 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:34:49,709 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:34:49,711 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:34:49,713 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:34:49,716 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:34:49,721 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:34:49,726 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:34:49,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:34:49,891 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:34:49,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49 WrapperNode [2022-11-26 00:34:49,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:34:49,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:34:49,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:34:49,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:34:49,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:49,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:49,986 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-11-26 00:34:49,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:34:49,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:34:49,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:34:49,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:34:49,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:50,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:50,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:50,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:50,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:50,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:50,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:50,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:50,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:34:50,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:34:50,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:34:50,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:34:50,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (1/1) ... [2022-11-26 00:34:50,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:34:50,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:50,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:34:50,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:34:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:34:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:34:50,172 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:34:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:34:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:34:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:34:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:34:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:34:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:34:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:34:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:34:50,418 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:34:50,431 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:34:50,649 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:34:50,707 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:34:50,716 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:34:50,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:34:50 BoogieIcfgContainer [2022-11-26 00:34:50,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:34:50,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:34:50,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:34:50,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:34:50,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:34:48" (1/3) ... [2022-11-26 00:34:50,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288f320c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:34:50, skipping insertion in model container [2022-11-26 00:34:50,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:49" (2/3) ... [2022-11-26 00:34:50,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288f320c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:34:50, skipping insertion in model container [2022-11-26 00:34:50,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:34:50" (3/3) ... [2022-11-26 00:34:50,736 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2022-11-26 00:34:50,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:34:50,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:34:50,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:34:50,840 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@673ab18b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:34:50,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:34:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:34:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:34:50,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:50,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:34:50,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:34:50,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:50,867 INFO L85 PathProgramCache]: Analyzing trace with hash -39611802, now seen corresponding path program 1 times [2022-11-26 00:34:50,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:34:50,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543059964] [2022-11-26 00:34:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:34:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:34:51,105 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:34:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:34:51,199 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:34:51,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:34:51,202 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:34:51,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:34:51,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:34:51,212 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:34:51,217 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:34:51,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:34:51 BoogieIcfgContainer [2022-11-26 00:34:51,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:34:51,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:34:51,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:34:51,254 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:34:51,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:34:50" (3/4) ... [2022-11-26 00:34:51,258 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:34:51,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:34:51,265 INFO L158 Benchmark]: Toolchain (without parser) took 2887.48ms. Allocated memory was 130.0MB in the beginning and 184.5MB in the end (delta: 54.5MB). Free memory was 86.8MB in the beginning and 143.5MB in the end (delta: -56.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:34:51,266 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:34:51,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1513.81ms. Allocated memory was 130.0MB in the beginning and 184.5MB in the end (delta: 54.5MB). Free memory was 86.5MB in the beginning and 121.2MB in the end (delta: -34.7MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2022-11-26 00:34:51,268 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.33ms. Allocated memory is still 184.5MB. Free memory was 121.2MB in the beginning and 118.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:34:51,273 INFO L158 Benchmark]: Boogie Preprocessor took 62.86ms. Allocated memory is still 184.5MB. Free memory was 118.3MB in the beginning and 116.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:34:51,274 INFO L158 Benchmark]: RCFGBuilder took 668.17ms. Allocated memory is still 184.5MB. Free memory was 116.3MB in the beginning and 101.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:34:51,275 INFO L158 Benchmark]: TraceAbstraction took 529.33ms. Allocated memory is still 184.5MB. Free memory was 101.5MB in the beginning and 143.5MB in the end (delta: -42.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:34:51,276 INFO L158 Benchmark]: Witness Printer took 4.71ms. Allocated memory is still 184.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:34:51,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1513.81ms. Allocated memory was 130.0MB in the beginning and 184.5MB in the end (delta: 54.5MB). Free memory was 86.5MB in the beginning and 121.2MB in the end (delta: -34.7MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.33ms. Allocated memory is still 184.5MB. Free memory was 121.2MB in the beginning and 118.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.86ms. Allocated memory is still 184.5MB. Free memory was 118.3MB in the beginning and 116.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 668.17ms. Allocated memory is still 184.5MB. Free memory was 116.3MB in the beginning and 101.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 529.33ms. Allocated memory is still 184.5MB. Free memory was 101.5MB in the beginning and 143.5MB in the end (delta: -42.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.71ms. Allocated memory is still 184.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741830:1073741829}, argv={1073741830:1073741829}, CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_postdec_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1565] CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_postdec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal) [L1582] data-- VAL [\old(data)=-2147483648, CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=1, data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:34:51,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --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 7dd2ebae3e4efedbc7c5167fcbd380e697a52b1008674458a69e2697e3b8a545 --- 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-38b53e6 [2022-11-26 00:34:53,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:34:53,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:34:53,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:34:53,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:34:53,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:34:53,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:34:53,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:34:53,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:34:53,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:34:53,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:34:53,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:34:53,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:34:53,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:34:53,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:34:53,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:34:53,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:34:53,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:34:53,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:34:53,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:34:53,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:34:53,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:34:53,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:34:53,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:34:53,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:34:53,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:34:53,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:34:53,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:34:53,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:34:53,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:34:53,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:34:53,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:34:53,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:34:53,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:34:53,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:34:53,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:34:53,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:34:53,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:34:53,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:34:53,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:34:53,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:34:53,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-26 00:34:53,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:34:53,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:34:53,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:34:53,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:34:53,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:34:53,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:34:53,849 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:34:53,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:34:53,850 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:34:53,850 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:34:53,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:34:53,851 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:34:53,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:34:53,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:34:53,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:34:53,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:34:53,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:34:53,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:34:53,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:34:53,853 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:34:53,854 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:34:53,854 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:34:53,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:34:53,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:34:53,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:34:53,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:34:53,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:34:53,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:34:53,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:34:53,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:34:53,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:34:53,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:34:53,857 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:34:53,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:34:53,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:34:53,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:34:53,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:34:53,858 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd2ebae3e4efedbc7c5167fcbd380e697a52b1008674458a69e2697e3b8a545 [2022-11-26 00:34:54,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:34:54,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:34:54,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:34:54,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:34:54,241 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:34:54,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2022-11-26 00:34:57,333 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:34:57,780 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:34:57,781 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2022-11-26 00:34:57,803 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/data/180568246/e694df3a88ca49348b4055d647fee935/FLAG5dd53dee6 [2022-11-26 00:34:57,821 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/data/180568246/e694df3a88ca49348b4055d647fee935 [2022-11-26 00:34:57,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:34:57,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:34:57,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:34:57,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:34:57,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:34:57,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:34:57" (1/1) ... [2022-11-26 00:34:57,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ae42e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:57, skipping insertion in model container [2022-11-26 00:34:57,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:34:57" (1/1) ... [2022-11-26 00:34:57,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:34:57,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:34:58,420 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:34:59,309 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:34:59,316 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:34:59,319 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:34:59,327 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:34:59,329 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:34:59,357 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:34:59,364 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:34:59,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:34:59,395 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:34:59,428 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:34:59,474 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:34:59,476 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:34:59,477 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:34:59,479 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:34:59,480 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:34:59,484 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:34:59,485 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:34:59,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:34:59,625 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:34:59,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59 WrapperNode [2022-11-26 00:34:59,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:34:59,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:34:59,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:34:59,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:34:59,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,704 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2022-11-26 00:34:59,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:34:59,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:34:59,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:34:59,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:34:59,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,746 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:34:59,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:34:59,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:34:59,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:34:59,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (1/1) ... [2022-11-26 00:34:59,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:34:59,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:59,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:34:59,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:34:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:34:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:34:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:34:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:34:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:34:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:34:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:34:59,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:34:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:34:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:34:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-26 00:35:00,125 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:35:00,129 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:35:00,390 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:35:00,396 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:35:00,397 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:35:00,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:00 BoogieIcfgContainer [2022-11-26 00:35:00,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:35:00,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:35:00,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:35:00,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:35:00,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:34:57" (1/3) ... [2022-11-26 00:35:00,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fa6902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:00, skipping insertion in model container [2022-11-26 00:35:00,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:34:59" (2/3) ... [2022-11-26 00:35:00,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fa6902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:00, skipping insertion in model container [2022-11-26 00:35:00,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:00" (3/3) ... [2022-11-26 00:35:00,409 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2022-11-26 00:35:00,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:35:00,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:35:00,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:35:00,506 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78337f73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:35:00,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:35:00,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:35:00,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:35:00,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:00,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:00,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:35:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2022-11-26 00:35:00,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:35:00,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642031529] [2022-11-26 00:35:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:00,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:35:00,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:35:00,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:35:00,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:35:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:35:00,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:35:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:35:00,902 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 00:35:00,909 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:35:00,911 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:35:00,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:35:00,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:35:01,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:35:01,140 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:35:01,145 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:35:01,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:35:01 BoogieIcfgContainer [2022-11-26 00:35:01,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:35:01,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:35:01,188 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:35:01,189 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:35:01,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:00" (3/4) ... [2022-11-26 00:35:01,194 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:35:01,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:35:01,197 INFO L158 Benchmark]: Toolchain (without parser) took 3368.61ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 57.0MB in the beginning and 61.3MB in the end (delta: -4.3MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-11-26 00:35:01,197 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:01,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1792.38ms. Allocated memory is still 81.8MB. Free memory was 56.8MB in the beginning and 34.3MB in the end (delta: 22.4MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2022-11-26 00:35:01,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.33ms. Allocated memory is still 81.8MB. Free memory was 34.3MB in the beginning and 55.4MB in the end (delta: -21.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-11-26 00:35:01,200 INFO L158 Benchmark]: Boogie Preprocessor took 46.45ms. Allocated memory is still 81.8MB. Free memory was 55.4MB in the beginning and 53.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:35:01,200 INFO L158 Benchmark]: RCFGBuilder took 647.07ms. Allocated memory is still 81.8MB. Free memory was 53.3MB in the beginning and 39.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:35:01,201 INFO L158 Benchmark]: TraceAbstraction took 784.10ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 38.6MB in the beginning and 61.8MB in the end (delta: -23.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:01,202 INFO L158 Benchmark]: Witness Printer took 8.91ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 61.3MB in the end (delta: 522.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:01,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1792.38ms. Allocated memory is still 81.8MB. Free memory was 56.8MB in the beginning and 34.3MB in the end (delta: 22.4MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.33ms. Allocated memory is still 81.8MB. Free memory was 34.3MB in the beginning and 55.4MB in the end (delta: -21.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.45ms. Allocated memory is still 81.8MB. Free memory was 55.4MB in the beginning and 53.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 647.07ms. Allocated memory is still 81.8MB. Free memory was 53.3MB in the beginning and 39.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 784.10ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 38.6MB in the beginning and 61.8MB in the end (delta: -23.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.91ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 61.3MB in the end (delta: 522.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal = 0; VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_postdec_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1565] CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_postdec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal) [L1582] data-- VAL [\old(data)=-2147483648, CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=1, data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:35:01,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e85fe7d-d1f9-4c97-abcd-ffc014b2fd6f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample