./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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 3682323ed3f3e959210ae31f39b8472c2658a034394273605eede676a52e113f --- 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 00:05:13,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:05:13,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:05:13,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:05:13,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:05:13,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:05:13,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:05:13,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:05:13,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:05:13,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:05:13,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:05:13,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:05:13,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:05:13,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:05:13,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:05:13,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:05:13,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:05:13,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:05:13,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:05:13,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:05:13,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:05:13,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:05:13,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:05:13,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:05:13,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:05:13,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:05:13,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:05:13,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:05:13,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:05:13,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:05:13,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:05:13,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:05:13,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:05:13,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:05:13,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:05:13,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:05:13,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:05:13,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:05:13,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:05:13,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:05:13,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:05:13,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 00:05:13,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:05:13,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:05:13,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:05:13,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:05:13,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:05:13,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:05:13,602 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:05:13,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:05:13,603 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:05:13,603 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:05:13,605 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:05:13,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:05:13,605 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:05:13,606 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:05:13,606 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:05:13,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:05:13,607 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:05:13,607 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:05:13,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:05:13,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:05:13,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:05:13,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:05:13,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:05:13,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:05:13,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:05:13,610 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:05:13,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:05:13,610 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:05:13,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:05:13,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:05:13,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:05:13,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:05:13,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:05:13,613 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:05:13,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:05:13,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:05:13,614 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:05:13,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:05:13,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:05:13,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:05:13,615 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_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3682323ed3f3e959210ae31f39b8472c2658a034394273605eede676a52e113f [2022-11-26 00:05:13,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:05:13,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:05:13,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:05:13,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:05:13,953 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:05:13,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2022-11-26 00:05:17,189 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:05:17,718 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:05:17,719 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2022-11-26 00:05:17,755 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/data/4aa405521/e1803d5eb2c84017966e0ac6990469fc/FLAGa5b69a7f0 [2022-11-26 00:05:17,776 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/data/4aa405521/e1803d5eb2c84017966e0ac6990469fc [2022-11-26 00:05:17,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:05:17,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:05:17,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:05:17,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:05:17,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:05:17,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:17" (1/1) ... [2022-11-26 00:05:17,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1899b9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:17, skipping insertion in model container [2022-11-26 00:05:17,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:17" (1/1) ... [2022-11-26 00:05:17,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:05:17,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:05:18,306 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:05:18,882 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:05:18,890 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:05:18,893 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:05:18,896 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:05:18,897 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:05:18,926 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:05:18,930 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:05:18,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:05:18,949 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:05:18,992 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:05:19,096 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:05:19,101 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:05:19,104 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:05:19,110 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:05:19,114 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:05:19,131 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:05:19,136 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:05:19,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:05:19,354 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:05:19,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19 WrapperNode [2022-11-26 00:05:19,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:05:19,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:05:19,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:05:19,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:05:19,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,493 INFO L138 Inliner]: procedures = 501, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-11-26 00:05:19,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:05:19,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:05:19,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:05:19,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:05:19,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:05:19,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:05:19,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:05:19,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:05:19,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (1/1) ... [2022-11-26 00:05:19,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:05:19,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:05:19,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:05:19,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:05:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:05:19,645 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:05:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:05:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:05:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:05:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:05:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:05:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:05:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:05:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:05:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:05:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:05:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:05:19,816 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:05:19,819 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:05:20,086 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:05:20,178 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:05:20,190 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:05:20,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:20 BoogieIcfgContainer [2022-11-26 00:05:20,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:05:20,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:05:20,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:05:20,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:05:20,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:17" (1/3) ... [2022-11-26 00:05:20,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17079f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:20, skipping insertion in model container [2022-11-26 00:05:20,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:19" (2/3) ... [2022-11-26 00:05:20,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17079f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:20, skipping insertion in model container [2022-11-26 00:05:20,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:20" (3/3) ... [2022-11-26 00:05:20,203 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2022-11-26 00:05:20,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:05:20,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:05:20,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:05:20,316 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;@7043d675, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:05:20,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:05:20,323 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 00:05:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:05:20,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:05:20,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:05:20,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:05:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:05:20,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1767842661, now seen corresponding path program 1 times [2022-11-26 00:05:20,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:05:20,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325784117] [2022-11-26 00:05:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:05:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:05:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:05:20,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:05:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:05:20,739 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:05:20,741 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:05:20,743 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:05:20,745 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:05:20,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:05:20,750 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:05:20,756 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:05:20,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:05:20 BoogieIcfgContainer [2022-11-26 00:05:20,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:05:20,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:05:20,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:05:20,789 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:05:20,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:20" (3/4) ... [2022-11-26 00:05:20,794 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:05:20,794 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:05:20,795 INFO L158 Benchmark]: Toolchain (without parser) took 3010.85ms. Allocated memory is still 203.4MB. Free memory was 168.9MB in the beginning and 126.7MB in the end (delta: 42.2MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2022-11-26 00:05:20,796 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:05:20,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1571.30ms. Allocated memory is still 203.4MB. Free memory was 168.9MB in the beginning and 166.5MB in the end (delta: 2.4MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2022-11-26 00:05:20,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 133.73ms. Allocated memory is still 203.4MB. Free memory was 166.5MB in the beginning and 163.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:05:20,798 INFO L158 Benchmark]: Boogie Preprocessor took 59.61ms. Allocated memory is still 203.4MB. Free memory was 163.3MB in the beginning and 161.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:05:20,799 INFO L158 Benchmark]: RCFGBuilder took 638.79ms. Allocated memory is still 203.4MB. Free memory was 161.3MB in the beginning and 145.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-26 00:05:20,799 INFO L158 Benchmark]: TraceAbstraction took 592.01ms. Allocated memory is still 203.4MB. Free memory was 145.6MB in the beginning and 126.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-26 00:05:20,800 INFO L158 Benchmark]: Witness Printer took 5.54ms. Allocated memory is still 203.4MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:05:20,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 130.0MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1571.30ms. Allocated memory is still 203.4MB. Free memory was 168.9MB in the beginning and 166.5MB in the end (delta: 2.4MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 133.73ms. Allocated memory is still 203.4MB. Free memory was 166.5MB in the beginning and 163.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.61ms. Allocated memory is still 203.4MB. Free memory was 163.3MB in the beginning and 161.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 638.79ms. Allocated memory is still 203.4MB. Free memory was 161.3MB in the beginning and 145.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 592.01ms. Allocated memory is still 203.4MB. Free memory was 145.6MB in the beginning and 126.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.54ms. Allocated memory is still 203.4MB. Free memory is still 126.7MB. 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: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] CALL printLine("Calling bad()...") VAL [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) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741831:1073741828}, argv={1073741831:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_multiply_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_multiply_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1577] COND TRUE data < 0 VAL [data=-1073741825, dataPtr={6:0}, dataPtr={6:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] data * 2 VAL [data=-1073741825, dataPtr={6:0}, dataPtr={6:0}, 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: 1579]: 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: 0.5s, 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 00:05:20,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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 3682323ed3f3e959210ae31f39b8472c2658a034394273605eede676a52e113f --- 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 00:05:23,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:05:23,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:05:23,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:05:23,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:05:23,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:05:23,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:05:23,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:05:23,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:05:23,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:05:23,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:05:23,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:05:23,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:05:23,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:05:23,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:05:23,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:05:23,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:05:23,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:05:23,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:05:23,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:05:23,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:05:23,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:05:23,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:05:23,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:05:23,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:05:23,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:05:23,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:05:23,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:05:23,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:05:23,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:05:23,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:05:23,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:05:23,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:05:23,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:05:23,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:05:23,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:05:23,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:05:23,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:05:23,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:05:23,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:05:23,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:05:23,775 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-26 00:05:23,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:05:23,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:05:23,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:05:23,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:05:23,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:05:23,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:05:23,835 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:05:23,836 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:05:23,836 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:05:23,836 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:05:23,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:05:23,838 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:05:23,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:05:23,839 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:05:23,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:05:23,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:05:23,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:05:23,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:05:23,841 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:05:23,841 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:05:23,842 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:05:23,842 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:05:23,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:05:23,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:05:23,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:05:23,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:05:23,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:05:23,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:05:23,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:05:23,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:05:23,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:05:23,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:05:23,847 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:05:23,847 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:05:23,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:05:23,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:05:23,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:05:23,848 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_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3682323ed3f3e959210ae31f39b8472c2658a034394273605eede676a52e113f [2022-11-26 00:05:24,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:05:24,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:05:24,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:05:24,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:05:24,287 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:05:24,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2022-11-26 00:05:27,929 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:05:28,313 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:05:28,313 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2022-11-26 00:05:28,334 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/data/fc1e885db/9a711f235d4c40b38eec044cea3f5424/FLAG4c4aa7084 [2022-11-26 00:05:28,356 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/data/fc1e885db/9a711f235d4c40b38eec044cea3f5424 [2022-11-26 00:05:28,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:05:28,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:05:28,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:05:28,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:05:28,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:05:28,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:28" (1/1) ... [2022-11-26 00:05:28,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e0eb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:28, skipping insertion in model container [2022-11-26 00:05:28,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:28" (1/1) ... [2022-11-26 00:05:28,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:05:28,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:05:28,949 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:05:29,557 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:05:29,564 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:05:29,566 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:05:29,578 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:05:29,579 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:05:29,623 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:05:29,632 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:05:29,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:05:29,659 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:05:29,687 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:05:29,739 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:05:29,741 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:05:29,742 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:05:29,745 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:05:29,746 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:05:29,751 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:05:29,752 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:05:29,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:05:29,951 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:05:29,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29 WrapperNode [2022-11-26 00:05:29,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:05:29,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:05:29,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:05:29,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:05:29,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,029 INFO L138 Inliner]: procedures = 506, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2022-11-26 00:05:30,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:05:30,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:05:30,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:05:30,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:05:30,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:05:30,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:05:30,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:05:30,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:05:30,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (1/1) ... [2022-11-26 00:05:30,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:05:30,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:05:30,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:05:30,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:05:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:05:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:05:30,180 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:05:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:05:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:05:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:05:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:05:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:05:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-26 00:05:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:05:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-26 00:05:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:05:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-26 00:05:30,359 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:05:30,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:05:30,613 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:05:30,619 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:05:30,620 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:05:30,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:30 BoogieIcfgContainer [2022-11-26 00:05:30,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:05:30,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:05:30,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:05:30,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:05:30,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:28" (1/3) ... [2022-11-26 00:05:30,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e54760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:30, skipping insertion in model container [2022-11-26 00:05:30,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:29" (2/3) ... [2022-11-26 00:05:30,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e54760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:30, skipping insertion in model container [2022-11-26 00:05:30,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:30" (3/3) ... [2022-11-26 00:05:30,632 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_63_bad.i [2022-11-26 00:05:30,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:05:30,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:05:30,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:05:30,717 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;@a660fb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:05:30,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:05:30,722 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 00:05:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:05:30,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:05:30,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:05:30,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:05:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:05:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2022-11-26 00:05:30,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:05:30,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142972688] [2022-11-26 00:05:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:05:30,767 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 00:05:30,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:05:30,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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 00:05:30,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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 00:05:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:05:31,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:05:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:05:31,216 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 00:05:31,218 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:05:31,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:05:31,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:05:31,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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 00:05:31,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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 00:05:31,449 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:05:31,462 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:05:31,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:05:31 BoogieIcfgContainer [2022-11-26 00:05:31,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:05:31,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:05:31,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:05:31,519 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:05:31,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:30" (3/4) ... [2022-11-26 00:05:31,524 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:05:31,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:05:31,528 INFO L158 Benchmark]: Toolchain (without parser) took 3160.71ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 59.3MB in the beginning and 66.1MB in the end (delta: -6.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-11-26 00:05:31,528 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 60.8MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:05:31,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1578.77ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 36.8MB in the end (delta: 22.2MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2022-11-26 00:05:31,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.81ms. Allocated memory is still 83.9MB. Free memory was 36.8MB in the beginning and 33.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:05:31,533 INFO L158 Benchmark]: Boogie Preprocessor took 52.13ms. Allocated memory is still 83.9MB. Free memory was 33.9MB in the beginning and 31.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:05:31,535 INFO L158 Benchmark]: RCFGBuilder took 539.18ms. Allocated memory is still 83.9MB. Free memory was 31.8MB in the beginning and 43.2MB in the end (delta: -11.4MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2022-11-26 00:05:31,536 INFO L158 Benchmark]: TraceAbstraction took 893.19ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 42.7MB in the beginning and 66.1MB in the end (delta: -23.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:05:31,539 INFO L158 Benchmark]: Witness Printer took 7.56ms. Allocated memory is still 100.7MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:05:31,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 60.8MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1578.77ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 36.8MB in the end (delta: 22.2MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.81ms. Allocated memory is still 83.9MB. Free memory was 36.8MB in the beginning and 33.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.13ms. Allocated memory is still 83.9MB. Free memory was 33.9MB in the beginning and 31.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 539.18ms. Allocated memory is still 83.9MB. Free memory was 31.8MB in the beginning and 43.2MB in the end (delta: -11.4MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * TraceAbstraction took 893.19ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 42.7MB in the beginning and 66.1MB in the end (delta: -23.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.56ms. Allocated memory is still 100.7MB. Free memory is still 66.1MB. 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: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [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) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={18:13}, argv={18:13}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_multiply_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_multiply_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1577] COND TRUE data < 0 VAL [data=-2147483648, dataPtr={12:0}, dataPtr={12:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] data * 2 VAL [data=-2147483648, dataPtr={12:0}, dataPtr={12:0}, 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: 1579]: 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: 0.8s, 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 00:05:31,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4e8d1b1-9654-4164-a847-44fa40f5e3e7/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