./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_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_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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_40caea33-d2e0-4136-a711-bdcd89535f4c/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 da9c506dbd5a8a39c9dccf9393e01fc23287fe9cd5069388be080dbc228fa07d --- 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 01:05:52,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:05:52,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:05:52,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:05:52,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:05:52,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:05:52,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:05:52,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:05:52,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:05:52,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:05:52,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:05:52,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:05:52,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:05:52,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:05:52,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:05:52,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:05:52,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:05:52,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:05:52,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:05:52,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:05:52,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:05:52,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:05:52,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:05:52,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:05:52,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:05:52,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:05:52,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:05:52,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:05:52,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:05:52,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:05:52,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:05:52,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:05:52,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:05:52,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:05:52,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:05:52,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:05:52,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:05:52,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:05:52,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:05:52,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:05:52,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:05:52,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 01:05:52,962 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:05:52,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:05:52,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:05:52,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:05:52,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:05:52,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:05:52,965 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:05:52,965 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:05:52,966 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:05:52,966 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:05:52,967 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:05:52,967 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:05:52,967 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:05:52,968 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:05:52,968 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:05:52,968 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:05:52,968 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:05:52,969 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:05:52,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:05:52,970 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:05:52,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:05:52,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:05:52,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:05:52,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:05:52,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:05:52,971 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 01:05:52,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:05:52,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:05:52,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:05:52,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:05:52,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:05:52,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:05:52,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:05:52,974 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:05:52,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:05:52,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:05:52,974 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:05:52,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:05:52,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:05:52,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:05:52,975 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_40caea33-d2e0-4136-a711-bdcd89535f4c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9c506dbd5a8a39c9dccf9393e01fc23287fe9cd5069388be080dbc228fa07d [2022-11-26 01:05:53,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:05:53,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:05:53,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:05:53,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:05:53,357 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:05:53,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-11-26 01:05:56,788 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:05:57,215 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:05:57,215 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-11-26 01:05:57,238 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/data/0050acd0b/2bf572a66ac34fd79ccb8223184d8bfc/FLAGeed5befe7 [2022-11-26 01:05:57,257 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/data/0050acd0b/2bf572a66ac34fd79ccb8223184d8bfc [2022-11-26 01:05:57,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:05:57,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:05:57,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:05:57,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:05:57,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:05:57,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:05:57" (1/1) ... [2022-11-26 01:05:57,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f082423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:57, skipping insertion in model container [2022-11-26 01:05:57,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:05:57" (1/1) ... [2022-11-26 01:05:57,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:05:57,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:05:57,886 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 01:05:58,526 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:05:58,533 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:05:58,536 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:05:58,542 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:05:58,544 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:05:58,569 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 01:05:58,575 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 01:05:58,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:05:58,588 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:05:58,609 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 01:05:58,666 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:05:58,668 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:05:58,670 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:05:58,673 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:05:58,674 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:05:58,680 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 01:05:58,682 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 01:05:58,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:05:58,876 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:05:58,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58 WrapperNode [2022-11-26 01:05:58,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:05:58,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:05:58,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:05:58,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:05:58,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:58,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:58,981 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-11-26 01:05:58,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:05:58,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:05:58,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:05:58,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:05:59,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:59,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:59,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:59,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:59,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:59,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:59,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:59,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:59,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:05:59,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:05:59,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:05:59,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:05:59,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (1/1) ... [2022-11-26 01:05:59,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:05:59,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:05:59,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:05:59,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:05:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 01:05:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 01:05:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 01:05:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:05:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 01:05:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:05:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:05:59,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:05:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:05:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 01:05:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:05:59,321 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:05:59,323 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:05:59,526 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:05:59,572 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:05:59,573 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:05:59,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:05:59 BoogieIcfgContainer [2022-11-26 01:05:59,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:05:59,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:05:59,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:05:59,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:05:59,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:05:57" (1/3) ... [2022-11-26 01:05:59,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f1eb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:05:59, skipping insertion in model container [2022-11-26 01:05:59,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:05:58" (2/3) ... [2022-11-26 01:05:59,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f1eb3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:05:59, skipping insertion in model container [2022-11-26 01:05:59,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:05:59" (3/3) ... [2022-11-26 01:05:59,588 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-11-26 01:05:59,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:05:59,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 01:05:59,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:05:59,683 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;@5ef102a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:05:59,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 01:05:59,689 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 01:05:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 01:05:59,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:05:59,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:05:59,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 01:05:59,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:05:59,706 INFO L85 PathProgramCache]: Analyzing trace with hash 847032300, now seen corresponding path program 1 times [2022-11-26 01:05:59,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:05:59,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043707216] [2022-11-26 01:05:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:05:59,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:05:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:05:59,971 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:05:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:06:00,040 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:06:00,046 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:06:00,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 01:06:00,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 01:06:00,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:06:00,057 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 01:06:00,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:06:00,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:06:00 BoogieIcfgContainer [2022-11-26 01:06:00,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:06:00,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:06:00,114 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:06:00,115 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:06:00,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:05:59" (3/4) ... [2022-11-26 01:06:00,119 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 01:06:00,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:06:00,120 INFO L158 Benchmark]: Toolchain (without parser) took 2857.28ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 106.9MB in the beginning and 91.7MB in the end (delta: 15.2MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2022-11-26 01:06:00,121 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 155.2MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:06:00,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1614.24ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 106.9MB in the beginning and 129.1MB in the end (delta: -22.1MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2022-11-26 01:06:00,123 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.99ms. Allocated memory is still 186.6MB. Free memory was 129.1MB in the beginning and 126.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 01:06:00,128 INFO L158 Benchmark]: Boogie Preprocessor took 68.81ms. Allocated memory is still 186.6MB. Free memory was 126.1MB in the beginning and 124.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:06:00,129 INFO L158 Benchmark]: RCFGBuilder took 524.55ms. Allocated memory is still 186.6MB. Free memory was 124.1MB in the beginning and 110.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 01:06:00,130 INFO L158 Benchmark]: TraceAbstraction took 533.10ms. Allocated memory is still 186.6MB. Free memory was 109.4MB in the beginning and 92.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-26 01:06:00,131 INFO L158 Benchmark]: Witness Printer took 4.76ms. Allocated memory is still 186.6MB. Free memory was 92.5MB in the beginning and 91.7MB in the end (delta: 797.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:06:00,139 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 155.2MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1614.24ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 106.9MB in the beginning and 129.1MB in the end (delta: -22.1MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.99ms. Allocated memory is still 186.6MB. Free memory was 129.1MB in the beginning and 126.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.81ms. Allocated memory is still 186.6MB. Free memory was 126.1MB in the beginning and 124.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.55ms. Allocated memory is still 186.6MB. Free memory was 124.1MB in the beginning and 110.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 533.10ms. Allocated memory is still 186.6MB. Free memory was 109.4MB in the beginning and 92.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.76ms. Allocated memory is still 186.6MB. Free memory was 92.5MB in the beginning and 91.7MB in the end (delta: 797.8kB). 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: 1569]: 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); [L1576] 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) [L1576] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_18_bad() [L1550] int data; [L1551] 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)] = ""; VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE data < 0 VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] data * 2 VAL [data=-1073741825, 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: 1569]: 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 01:06:00,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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 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_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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_40caea33-d2e0-4136-a711-bdcd89535f4c/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 da9c506dbd5a8a39c9dccf9393e01fc23287fe9cd5069388be080dbc228fa07d --- 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 01:06:02,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:06:02,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:06:02,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:06:02,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:06:02,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:06:02,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:06:02,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:06:02,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:06:02,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:06:02,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:06:02,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:06:02,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:06:02,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:06:02,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:06:02,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:06:02,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:06:02,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:06:02,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:06:02,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:06:02,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:06:02,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:06:02,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:06:02,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:06:02,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:06:02,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:06:02,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:06:02,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:06:02,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:06:02,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:06:02,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:06:02,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:06:02,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:06:02,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:06:02,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:06:02,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:06:02,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:06:02,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:06:02,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:06:02,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:06:02,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:06:02,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-26 01:06:02,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:06:02,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:06:02,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:06:02,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:06:02,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:06:02,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:06:02,885 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:06:02,886 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:06:02,886 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:06:02,886 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:06:02,887 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:06:02,887 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:06:02,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:06:02,888 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:06:02,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:06:02,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:06:02,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:06:02,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:06:02,890 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 01:06:02,890 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 01:06:02,891 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 01:06:02,891 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 01:06:02,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:06:02,892 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:06:02,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:06:02,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:06:02,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 01:06:02,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:06:02,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:06:02,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:06:02,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:06:02,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:06:02,894 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 01:06:02,895 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 01:06:02,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:06:02,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:06:02,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 01:06:02,896 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_40caea33-d2e0-4136-a711-bdcd89535f4c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9c506dbd5a8a39c9dccf9393e01fc23287fe9cd5069388be080dbc228fa07d [2022-11-26 01:06:03,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:06:03,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:06:03,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:06:03,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:06:03,326 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:06:03,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-11-26 01:06:06,845 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:06:07,335 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:06:07,336 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-11-26 01:06:07,359 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/data/7bdb7e4ad/8e2af61caa7e45c0941890d5e948f42b/FLAGba2418ec3 [2022-11-26 01:06:07,384 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/data/7bdb7e4ad/8e2af61caa7e45c0941890d5e948f42b [2022-11-26 01:06:07,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:06:07,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:06:07,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:06:07,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:06:07,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:06:07,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:06:07" (1/1) ... [2022-11-26 01:06:07,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14dac0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:07, skipping insertion in model container [2022-11-26 01:06:07,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:06:07" (1/1) ... [2022-11-26 01:06:07,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:06:07,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:06:08,000 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 01:06:08,624 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:06:08,631 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:06:08,633 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:06:08,635 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:06:08,636 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:06:08,699 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 01:06:08,721 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 01:06:08,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:06:08,762 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:06:08,800 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 01:06:08,903 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 01:06:08,909 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:06:08,911 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 01:06:08,915 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:06:08,917 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 01:06:08,929 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 01:06:08,938 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 01:06:08,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:06:09,118 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:06:09,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09 WrapperNode [2022-11-26 01:06:09,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:06:09,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:06:09,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:06:09,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:06:09,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,190 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-11-26 01:06:09,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:06:09,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:06:09,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:06:09,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:06:09,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:06:09,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:06:09,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:06:09,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:06:09,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (1/1) ... [2022-11-26 01:06:09,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:06:09,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:06:09,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:06:09,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:06:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 01:06:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 01:06:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 01:06:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:06:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 01:06:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:06:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:06:09,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:06:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:06:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 01:06:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-26 01:06:09,600 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:06:09,602 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:06:09,853 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:06:09,860 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:06:09,861 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:06:09,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:06:09 BoogieIcfgContainer [2022-11-26 01:06:09,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:06:09,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:06:09,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:06:09,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:06:09,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:06:07" (1/3) ... [2022-11-26 01:06:09,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3c9e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:06:09, skipping insertion in model container [2022-11-26 01:06:09,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:06:09" (2/3) ... [2022-11-26 01:06:09,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3c9e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:06:09, skipping insertion in model container [2022-11-26 01:06:09,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:06:09" (3/3) ... [2022-11-26 01:06:09,874 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-11-26 01:06:09,897 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:06:09,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 01:06:09,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:06:09,964 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;@29be8c01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:06:09,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 01:06:09,969 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 01:06:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 01:06:09,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:06:09,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:06:09,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 01:06:09,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:06:09,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1672166730, now seen corresponding path program 1 times [2022-11-26 01:06:10,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 01:06:10,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37480896] [2022-11-26 01:06:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:06:10,010 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 01:06:10,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 01:06:10,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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 01:06:10,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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 01:06:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:06:10,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:06:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:06:10,314 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 01:06:10,317 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:06:10,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 01:06:10,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 01:06:10,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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 01:06:10,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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 01:06:10,552 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 01:06:10,558 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 01:06:10,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 01:06:10 BoogieIcfgContainer [2022-11-26 01:06:10,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 01:06:10,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 01:06:10,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 01:06:10,602 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 01:06:10,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:06:09" (3/4) ... [2022-11-26 01:06:10,617 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 01:06:10,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 01:06:10,619 INFO L158 Benchmark]: Toolchain (without parser) took 3225.55ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 58.0MB in the beginning and 63.6MB in the end (delta: -5.5MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-11-26 01:06:10,626 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:06:10,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1722.28ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 57.8MB in the beginning and 69.2MB in the end (delta: -11.4MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-26 01:06:10,627 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.89ms. Allocated memory is still 113.2MB. Free memory was 69.2MB in the beginning and 66.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 01:06:10,628 INFO L158 Benchmark]: Boogie Preprocessor took 41.31ms. Allocated memory is still 113.2MB. Free memory was 66.0MB in the beginning and 63.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 01:06:10,629 INFO L158 Benchmark]: RCFGBuilder took 629.21ms. Allocated memory is still 113.2MB. Free memory was 63.9MB in the beginning and 81.8MB in the end (delta: -17.9MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-11-26 01:06:10,629 INFO L158 Benchmark]: TraceAbstraction took 735.37ms. Allocated memory is still 113.2MB. Free memory was 81.6MB in the beginning and 64.2MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-26 01:06:10,630 INFO L158 Benchmark]: Witness Printer took 16.14ms. Allocated memory is still 113.2MB. Free memory was 64.2MB in the beginning and 63.6MB in the end (delta: 631.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 01:06:10,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 60.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1722.28ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 57.8MB in the beginning and 69.2MB in the end (delta: -11.4MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.89ms. Allocated memory is still 113.2MB. Free memory was 69.2MB in the beginning and 66.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.31ms. Allocated memory is still 113.2MB. Free memory was 66.0MB in the beginning and 63.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 629.21ms. Allocated memory is still 113.2MB. Free memory was 63.9MB in the beginning and 81.8MB in the end (delta: -17.9MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 735.37ms. Allocated memory is still 113.2MB. Free memory was 81.6MB in the beginning and 64.2MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 16.14ms. Allocated memory is still 113.2MB. Free memory was 64.2MB in the beginning and 63.6MB in the end (delta: 631.4kB). 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: 1569]: 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); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] 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) [L1576] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_18_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [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)] = ""; VAL [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] [L1567] COND TRUE data < 0 VAL [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] [L1569] data * 2 VAL [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: 1569]: 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: 0.6s, 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, 13 NumberOfCodeBlocks, 13 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 01:06:10,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40caea33-d2e0-4136-a711-bdcd89535f4c/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