./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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_53ba1799-d75b-481e-a2d7-a48b37daa11e/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 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 --- 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 [2022-11-25 23:25:31,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:25:31,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:25:31,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:25:31,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:25:31,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:25:31,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:25:31,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:25:31,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:25:31,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:25:31,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:25:31,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:25:31,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:25:31,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:25:31,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:25:31,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:25:31,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:25:31,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:25:31,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:25:31,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:25:31,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:25:31,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:25:31,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:25:31,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:25:31,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:25:31,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:25:31,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:25:31,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:25:31,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:25:31,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:25:31,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:25:31,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:25:31,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:25:31,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:25:31,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:25:31,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:25:31,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:25:31,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:25:31,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:25:31,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:25:31,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:25:31,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 23:25:31,932 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:25:31,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:25:31,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:25:31,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:25:31,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:25:31,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:25:31,935 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:25:31,935 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:25:31,935 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:25:31,936 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:25:31,937 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:25:31,937 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:25:31,937 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:25:31,937 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:25:31,938 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:25:31,938 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:25:31,938 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:25:31,938 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:25:31,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:25:31,939 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:25:31,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:25:31,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:25:31,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:25:31,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:25:31,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:25:31,940 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:25:31,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:25:31,941 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:25:31,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:25:31,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:25:31,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:25:31,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:25:31,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:25:31,943 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:25:31,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:25:31,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:25:31,943 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:25:31,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:25:31,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:25:31,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:25:31,945 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_53ba1799-d75b-481e-a2d7-a48b37daa11e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 [2022-11-25 23:25:32,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:25:32,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:25:32,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:25:32,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:25:32,369 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:25:32,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-11-25 23:25:35,516 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:25:35,928 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:25:35,929 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-11-25 23:25:35,963 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/data/283184946/c26c779e7cef4eb588bea3c4092a6fca/FLAG331a3ee17 [2022-11-25 23:25:35,981 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/data/283184946/c26c779e7cef4eb588bea3c4092a6fca [2022-11-25 23:25:35,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:25:35,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:25:35,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:25:35,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:25:35,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:25:35,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:25:35" (1/1) ... [2022-11-25 23:25:35,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87206bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:35, skipping insertion in model container [2022-11-25 23:25:35,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:25:35" (1/1) ... [2022-11-25 23:25:36,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:25:36,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:25:36,649 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:25:37,165 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:25:37,176 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:25:37,179 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:25:37,182 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:25:37,183 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:25:37,205 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:25:37,213 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:37,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:25:37,227 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:25:37,255 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:25:37,307 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:25:37,309 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:25:37,311 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:25:37,316 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:25:37,317 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:25:37,322 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:25:37,332 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:37,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:25:37,512 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:25:37,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37 WrapperNode [2022-11-25 23:25:37,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:25:37,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:25:37,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:25:37,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:25:37,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,616 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2022-11-25 23:25:37,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:25:37,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:25:37,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:25:37,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:25:37,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,660 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:25:37,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:25:37,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:25:37,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:25:37,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (1/1) ... [2022-11-25 23:25:37,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:25:37,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:25:37,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:25:37,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:25:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:25:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:25:37,759 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:25:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:25:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:25:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:25:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:25:37,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:25:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:25:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:25:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:25:37,920 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:25:37,922 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:25:38,179 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:25:38,242 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:25:38,242 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:25:38,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:25:38 BoogieIcfgContainer [2022-11-25 23:25:38,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:25:38,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:25:38,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:25:38,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:25:38,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:25:35" (1/3) ... [2022-11-25 23:25:38,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60df474b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:25:38, skipping insertion in model container [2022-11-25 23:25:38,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:37" (2/3) ... [2022-11-25 23:25:38,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60df474b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:25:38, skipping insertion in model container [2022-11-25 23:25:38,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:25:38" (3/3) ... [2022-11-25 23:25:38,273 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-11-25 23:25:38,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:25:38,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:25:38,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:25:38,356 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;@31c22c77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:25:38,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:25:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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) [2022-11-25 23:25:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:25:38,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:25:38,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:25:38,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:25:38,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:25:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash 108804919, now seen corresponding path program 1 times [2022-11-25 23:25:38,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:25:38,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761385391] [2022-11-25 23:25:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:25:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:25:38,569 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:25:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:25:38,627 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:25:38,629 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:25:38,630 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:25:38,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:25:38,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:25:38,639 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:25:38,645 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:25:38,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:25:38 BoogieIcfgContainer [2022-11-25 23:25:38,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:25:38,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:25:38,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:25:38,677 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:25:38,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:25:38" (3/4) ... [2022-11-25 23:25:38,681 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:25:38,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:25:38,683 INFO L158 Benchmark]: Toolchain (without parser) took 2696.72ms. Allocated memory is still 172.0MB. Free memory was 132.4MB in the beginning and 49.5MB in the end (delta: 82.9MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. [2022-11-25 23:25:38,684 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:25:38,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1528.38ms. Allocated memory is still 172.0MB. Free memory was 132.4MB in the beginning and 86.7MB in the end (delta: 45.7MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-25 23:25:38,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.97ms. Allocated memory is still 172.0MB. Free memory was 86.7MB in the beginning and 83.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:25:38,686 INFO L158 Benchmark]: Boogie Preprocessor took 49.90ms. Allocated memory is still 172.0MB. Free memory was 83.7MB in the beginning and 82.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:25:38,686 INFO L158 Benchmark]: RCFGBuilder took 576.63ms. Allocated memory is still 172.0MB. Free memory was 82.5MB in the beginning and 67.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:25:38,687 INFO L158 Benchmark]: TraceAbstraction took 428.48ms. Allocated memory is still 172.0MB. Free memory was 66.9MB in the beginning and 50.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 23:25:38,688 INFO L158 Benchmark]: Witness Printer took 5.47ms. Allocated memory is still 172.0MB. Free memory was 50.1MB in the beginning and 49.5MB in the end (delta: 567.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:25:38,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1528.38ms. Allocated memory is still 172.0MB. Free memory was 132.4MB in the beginning and 86.7MB in the end (delta: 45.7MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.97ms. Allocated memory is still 172.0MB. Free memory was 86.7MB in the beginning and 83.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.90ms. Allocated memory is still 172.0MB. Free memory was 83.7MB in the beginning and 82.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 576.63ms. Allocated memory is still 172.0MB. Free memory was 82.5MB in the beginning and 67.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 428.48ms. Allocated memory is still 172.0MB. Free memory was 66.9MB in the beginning and 50.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.47ms. Allocated memory is still 172.0MB. Free memory was 50.1MB in the beginning and 49.5MB in the end (delta: 567.3kB). 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 1554. 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); [L1577] 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) [L1577] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741829:1073741827}, argv={1073741829:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561] return data; [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] --data 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=15occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 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 [2022-11-25 23:25:38,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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_53ba1799-d75b-481e-a2d7-a48b37daa11e/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 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 --- 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 [2022-11-25 23:25:41,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:25:41,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:25:41,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:25:41,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:25:41,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:25:41,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:25:41,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:25:41,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:25:41,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:25:41,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:25:41,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:25:41,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:25:41,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:25:41,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:25:41,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:25:41,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:25:41,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:25:41,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:25:41,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:25:41,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:25:41,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:25:41,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:25:41,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:25:41,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:25:41,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:25:41,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:25:41,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:25:41,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:25:41,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:25:41,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:25:41,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:25:41,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:25:41,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:25:41,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:25:41,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:25:41,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:25:41,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:25:41,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:25:41,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:25:41,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:25:41,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-25 23:25:41,620 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:25:41,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:25:41,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:25:41,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:25:41,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:25:41,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:25:41,624 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:25:41,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:25:41,624 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:25:41,625 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:25:41,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:25:41,626 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:25:41,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:25:41,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:25:41,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:25:41,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:25:41,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:25:41,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:25:41,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:25:41,629 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:25:41,629 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:25:41,629 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:25:41,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:25:41,630 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:25:41,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:25:41,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:25:41,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:25:41,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:25:41,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:25:41,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:25:41,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:25:41,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:25:41,632 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:25:41,632 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:25:41,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:25:41,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:25:41,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:25:41,633 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_53ba1799-d75b-481e-a2d7-a48b37daa11e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 [2022-11-25 23:25:42,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:25:42,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:25:42,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:25:42,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:25:42,050 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:25:42,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-11-25 23:25:45,179 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:25:45,644 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:25:45,644 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-11-25 23:25:45,667 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/data/2ca64f986/1d9ac1c5766c4aaf9f3f1f5f9a15f51a/FLAG7374860e6 [2022-11-25 23:25:45,694 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/data/2ca64f986/1d9ac1c5766c4aaf9f3f1f5f9a15f51a [2022-11-25 23:25:45,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:25:45,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:25:45,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:25:45,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:25:45,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:25:45,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:25:45" (1/1) ... [2022-11-25 23:25:45,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444ff70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:45, skipping insertion in model container [2022-11-25 23:25:45,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:25:45" (1/1) ... [2022-11-25 23:25:45,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:25:45,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:25:46,222 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:25:47,006 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:25:47,013 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:25:47,017 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:25:47,029 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:25:47,030 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:25:47,062 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:25:47,074 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:47,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:25:47,096 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:25:47,121 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:25:47,179 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:25:47,181 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:25:47,182 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:25:47,185 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:25:47,186 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:25:47,190 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:25:47,192 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:25:47,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:25:47,356 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:25:47,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47 WrapperNode [2022-11-25 23:25:47,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:25:47,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:25:47,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:25:47,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:25:47,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,427 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-11-25 23:25:47,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:25:47,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:25:47,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:25:47,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:25:47,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:25:47,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:25:47,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:25:47,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:25:47,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (1/1) ... [2022-11-25 23:25:47,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:25:47,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:25:47,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:25:47,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:25:47,581 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:25:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:25:47,582 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:25:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:25:47,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:25:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:25:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:25:47,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:25:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:25:47,583 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:25:47,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 23:25:47,769 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:25:47,771 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:25:47,982 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:25:47,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:25:47,989 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:25:47,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:25:47 BoogieIcfgContainer [2022-11-25 23:25:47,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:25:48,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:25:48,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:25:48,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:25:48,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:25:45" (1/3) ... [2022-11-25 23:25:48,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93711ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:25:48, skipping insertion in model container [2022-11-25 23:25:48,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:25:47" (2/3) ... [2022-11-25 23:25:48,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93711ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:25:48, skipping insertion in model container [2022-11-25 23:25:48,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:25:47" (3/3) ... [2022-11-25 23:25:48,025 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-11-25 23:25:48,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:25:48,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:25:48,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:25:48,141 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;@5e3456b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:25:48,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:25:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-11-25 23:25:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:25:48,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:25:48,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:25:48,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:25:48,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:25:48,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2022-11-25 23:25:48,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:25:48,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885059660] [2022-11-25 23:25:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:48,215 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 [2022-11-25 23:25:48,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:25:48,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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) [2022-11-25 23:25:48,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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 [2022-11-25 23:25:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:25:48,432 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:25:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:25:48,523 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 23:25:48,526 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:25:48,527 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:25:48,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:25:48,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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 [2022-11-25 23:25:48,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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 [2022-11-25 23:25:48,762 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:25:48,767 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:25:48,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:25:48 BoogieIcfgContainer [2022-11-25 23:25:48,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:25:48,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:25:48,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:25:48,809 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:25:48,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:25:47" (3/4) ... [2022-11-25 23:25:48,813 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:25:48,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:25:48,815 INFO L158 Benchmark]: Toolchain (without parser) took 3115.93ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 50.2MB in the beginning and 52.3MB in the end (delta: -2.1MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-11-25 23:25:48,816 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 75.5MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:25:48,816 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1656.56ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 50.0MB in the beginning and 42.1MB in the end (delta: 7.9MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2022-11-25 23:25:48,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.65ms. Allocated memory is still 92.3MB. Free memory was 42.1MB in the beginning and 63.5MB in the end (delta: -21.4MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-11-25 23:25:48,818 INFO L158 Benchmark]: Boogie Preprocessor took 54.95ms. Allocated memory is still 92.3MB. Free memory was 63.5MB in the beginning and 61.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:25:48,818 INFO L158 Benchmark]: RCFGBuilder took 515.78ms. Allocated memory is still 92.3MB. Free memory was 61.4MB in the beginning and 47.1MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:25:48,819 INFO L158 Benchmark]: TraceAbstraction took 805.82ms. Allocated memory is still 92.3MB. Free memory was 46.7MB in the beginning and 52.3MB in the end (delta: -5.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:25:48,819 INFO L158 Benchmark]: Witness Printer took 5.41ms. Allocated memory is still 92.3MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:25:48,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 75.5MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1656.56ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 50.0MB in the beginning and 42.1MB in the end (delta: 7.9MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.65ms. Allocated memory is still 92.3MB. Free memory was 42.1MB in the beginning and 63.5MB in the end (delta: -21.4MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.95ms. Allocated memory is still 92.3MB. Free memory was 63.5MB in the beginning and 61.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 515.78ms. Allocated memory is still 92.3MB. Free memory was 61.4MB in the beginning and 47.1MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 805.82ms. Allocated memory is still 92.3MB. Free memory was 46.7MB in the beginning and 52.3MB in the end (delta: -5.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.41ms. Allocated memory is still 92.3MB. Free memory is still 52.3MB. 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 1554. 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] [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561] return data; VAL [\old(data)=0, \result=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] --data 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, 23 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=23occurred 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 [2022-11-25 23:25:48,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53ba1799-d75b-481e-a2d7-a48b37daa11e/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