./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh --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 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb --- 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-2329fc7 [2022-12-14 15:08:13,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:08:13,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:08:13,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:08:13,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:08:13,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:08:13,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:08:13,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:08:13,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:08:13,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:08:13,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:08:13,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:08:13,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:08:13,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:08:13,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:08:13,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:08:13,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:08:13,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:08:13,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:08:13,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:08:13,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:08:13,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:08:13,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:08:13,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:08:13,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:08:13,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:08:13,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:08:13,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:08:13,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:08:13,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:08:13,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:08:13,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:08:13,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:08:13,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:08:13,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:08:13,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:08:13,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:08:13,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:08:13,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:08:13,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:08:13,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:08:13,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 15:08:13,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:08:13,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:08:13,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:08:13,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:08:13,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:08:13,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:08:13,831 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:08:13,831 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:08:13,831 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:08:13,831 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:08:13,832 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:08:13,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:08:13,832 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:08:13,832 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:08:13,832 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:08:13,832 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:08:13,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:08:13,833 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:08:13,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:08:13,834 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 15:08:13,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:08:13,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:08:13,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:08:13,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:08:13,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:08:13,835 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 15:08:13,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:08:13,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:08:13,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:08:13,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:08:13,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:08:13,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:08:13,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:08:13,836 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:08:13,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:08:13,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:08:13,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:08:13,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:08:13,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:08:13,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:08:13,838 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_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb [2022-12-14 15:08:14,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:08:14,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:08:14,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:08:14,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:08:14,038 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:08:14,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-12-14 15:08:16,662 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:08:16,923 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:08:16,923 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-12-14 15:08:16,938 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/data/ff020e49f/1b4e2c701a7f49948a2b687786a84ef6/FLAG3ae9336a6 [2022-12-14 15:08:16,950 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/data/ff020e49f/1b4e2c701a7f49948a2b687786a84ef6 [2022-12-14 15:08:16,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:08:16,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:08:16,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:08:16,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:08:16,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:08:16,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:16" (1/1) ... [2022-12-14 15:08:16,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50278d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:16, skipping insertion in model container [2022-12-14 15:08:16,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:16" (1/1) ... [2022-12-14 15:08:16,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:08:17,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:08:17,280 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 15:08:17,597 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:08:17,601 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 15:08:17,603 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 15:08:17,605 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 15:08:17,605 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 15:08:17,621 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 15:08:17,624 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 15:08:17,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:08:17,633 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:08:17,646 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 15:08:17,696 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:08:17,697 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 15:08:17,698 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 15:08:17,699 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 15:08:17,700 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 15:08:17,703 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 15:08:17,704 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 15:08:17,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:08:17,787 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:08:17,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17 WrapperNode [2022-12-14 15:08:17,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:08:17,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:08:17,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:08:17,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:08:17,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,829 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-12-14 15:08:17,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:08:17,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:08:17,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:08:17,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:08:17,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,845 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:08:17,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:08:17,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:08:17,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:08:17,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (1/1) ... [2022-12-14 15:08:17,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:08:17,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:08:17,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:08:17,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:08:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 15:08:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 15:08:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 15:08:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:08:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 15:08:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:08:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:08:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:08:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:08:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 15:08:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:08:18,029 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:08:18,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:08:18,140 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:08:18,170 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:08:18,171 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 15:08:18,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:18 BoogieIcfgContainer [2022-12-14 15:08:18,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:08:18,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:08:18,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:08:18,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:08:18,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:08:16" (1/3) ... [2022-12-14 15:08:18,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52499e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:08:18, skipping insertion in model container [2022-12-14 15:08:18,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:17" (2/3) ... [2022-12-14 15:08:18,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52499e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:08:18, skipping insertion in model container [2022-12-14 15:08:18,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:18" (3/3) ... [2022-12-14 15:08:18,182 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-12-14 15:08:18,196 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:08:18,196 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 15:08:18,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:08:18,241 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;@4fc3e82b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:08:18,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 15:08:18,245 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) [2022-12-14 15:08:18,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:08:18,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:08:18,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:08:18,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 15:08:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:08:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1525281585, now seen corresponding path program 1 times [2022-12-14 15:08:18,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:08:18,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007565742] [2022-12-14 15:08:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:08:18,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:08:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:08:18,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:08:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:08:18,389 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:08:18,390 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:08:18,391 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 15:08:18,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 15:08:18,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:08:18,396 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 15:08:18,400 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:08:18,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:08:18 BoogieIcfgContainer [2022-12-14 15:08:18,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:08:18,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:08:18,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:08:18,415 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:08:18,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:18" (3/4) ... [2022-12-14 15:08:18,417 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 15:08:18,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:08:18,418 INFO L158 Benchmark]: Toolchain (without parser) took 1465.53ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 73.5MB in the beginning and 111.9MB in the end (delta: -38.4MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2022-12-14 15:08:18,419 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 93.4MB in the end (delta: 118.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:08:18,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 834.25ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 73.5MB in the beginning and 93.6MB in the end (delta: -20.1MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2022-12-14 15:08:18,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.05ms. Allocated memory is still 163.6MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:08:18,420 INFO L158 Benchmark]: Boogie Preprocessor took 17.78ms. Allocated memory is still 163.6MB. Free memory was 90.7MB in the beginning and 89.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:08:18,420 INFO L158 Benchmark]: RCFGBuilder took 325.20ms. Allocated memory is still 163.6MB. Free memory was 89.4MB in the beginning and 128.7MB in the end (delta: -39.3MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2022-12-14 15:08:18,420 INFO L158 Benchmark]: TraceAbstraction took 238.23ms. Allocated memory is still 163.6MB. Free memory was 128.7MB in the beginning and 111.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 15:08:18,421 INFO L158 Benchmark]: Witness Printer took 3.02ms. Allocated memory is still 163.6MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:08:18,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 93.4MB in the end (delta: 118.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 834.25ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 73.5MB in the beginning and 93.6MB in the end (delta: -20.1MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.05ms. Allocated memory is still 163.6MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.78ms. Allocated memory is still 163.6MB. Free memory was 90.7MB in the beginning and 89.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 325.20ms. Allocated memory is still 163.6MB. Free memory was 89.4MB in the beginning and 128.7MB in the end (delta: -39.3MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * TraceAbstraction took 238.23ms. Allocated memory is still 163.6MB. Free memory was 128.7MB in the beginning and 111.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.02ms. Allocated memory is still 163.6MB. Free memory is still 111.9MB. 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: 1568]: 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)=1073741826, argc=1073741826, argv={1073741828:1073741827}, argv={1073741828:1073741827}, 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_predec_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=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1568] --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: 1568]: 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: 0.2s, 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 [2022-12-14 15:08:18,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/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_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh --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 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb --- 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-2329fc7 [2022-12-14 15:08:20,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:08:20,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:08:20,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:08:20,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:08:20,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:08:20,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:08:20,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:08:20,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:08:20,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:08:20,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:08:20,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:08:20,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:08:20,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:08:20,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:08:20,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:08:20,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:08:20,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:08:20,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:08:20,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:08:20,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:08:20,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:08:20,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:08:20,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:08:20,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:08:20,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:08:20,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:08:20,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:08:20,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:08:20,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:08:20,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:08:20,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:08:20,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:08:20,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:08:20,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:08:20,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:08:20,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:08:20,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:08:20,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:08:20,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:08:20,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:08:20,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 15:08:20,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:08:20,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:08:20,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:08:20,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:08:20,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:08:20,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:08:20,300 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:08:20,300 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:08:20,300 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:08:20,300 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:08:20,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:08:20,300 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:08:20,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:08:20,301 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 15:08:20,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:08:20,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:08:20,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:08:20,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:08:20,301 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 15:08:20,302 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 15:08:20,302 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 15:08:20,302 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 15:08:20,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:08:20,302 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:08:20,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:08:20,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:08:20,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 15:08:20,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:08:20,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:08:20,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:08:20,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:08:20,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:08:20,303 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 15:08:20,304 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 15:08:20,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:08:20,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:08:20,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 15:08:20,304 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_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33a1ef8c03915b427b1d5c85508ae75a2e80c3069e8027c6647c4f71b54774fb [2022-12-14 15:08:20,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:08:20,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:08:20,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:08:20,523 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:08:20,523 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:08:20,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-12-14 15:08:23,211 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:08:23,478 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:08:23,479 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-12-14 15:08:23,498 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/data/cd2b975f1/3e67f849e7ab4f5f8159659bbe76d6b7/FLAGe401a1ff7 [2022-12-14 15:08:23,511 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/data/cd2b975f1/3e67f849e7ab4f5f8159659bbe76d6b7 [2022-12-14 15:08:23,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:08:23,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:08:23,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:08:23,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:08:23,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:08:23,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:23" (1/1) ... [2022-12-14 15:08:23,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ee2308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:23, skipping insertion in model container [2022-12-14 15:08:23,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:08:23" (1/1) ... [2022-12-14 15:08:23,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:08:23,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:08:23,816 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 15:08:24,160 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:08:24,164 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 15:08:24,165 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 15:08:24,167 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 15:08:24,168 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 15:08:24,185 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 15:08:24,190 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 15:08:24,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:08:24,205 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:08:24,223 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 15:08:24,263 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:08:24,264 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 15:08:24,265 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 15:08:24,267 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 15:08:24,267 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 15:08:24,270 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 15:08:24,271 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 15:08:24,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:08:24,360 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:08:24,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24 WrapperNode [2022-12-14 15:08:24,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:08:24,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:08:24,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:08:24,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:08:24,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,398 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-12-14 15:08:24,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:08:24,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:08:24,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:08:24,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:08:24,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:08:24,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:08:24,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:08:24,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:08:24,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (1/1) ... [2022-12-14 15:08:24,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:08:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:08:24,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:08:24,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:08:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 15:08:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 15:08:24,477 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 15:08:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:08:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 15:08:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:08:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:08:24,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:08:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:08:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 15:08:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 15:08:24,602 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:08:24,603 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:08:24,718 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:08:24,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:08:24,723 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 15:08:24,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:24 BoogieIcfgContainer [2022-12-14 15:08:24,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:08:24,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:08:24,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:08:24,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:08:24,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:08:23" (1/3) ... [2022-12-14 15:08:24,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a7dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:08:24, skipping insertion in model container [2022-12-14 15:08:24,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:08:24" (2/3) ... [2022-12-14 15:08:24,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653a7dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:08:24, skipping insertion in model container [2022-12-14 15:08:24,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:24" (3/3) ... [2022-12-14 15:08:24,731 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_18_bad.i [2022-12-14 15:08:24,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:08:24,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 15:08:24,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:08:24,785 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;@c5ed498, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:08:24,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 15:08:24,788 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) [2022-12-14 15:08:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 15:08:24,794 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:08:24,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:08:24,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 15:08:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:08:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash 924028237, now seen corresponding path program 1 times [2022-12-14 15:08:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:08:24,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041999415] [2022-12-14 15:08:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:08:24,813 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 [2022-12-14 15:08:24,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:08:24,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/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) [2022-12-14 15:08:24,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:08:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:08:24,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:08:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:08:24,998 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 15:08:25,000 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:08:25,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 15:08:25,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 15:08:25,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:08:25,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/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 [2022-12-14 15:08:25,208 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 15:08:25,212 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:08:25,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:08:25 BoogieIcfgContainer [2022-12-14 15:08:25,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:08:25,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:08:25,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:08:25,237 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:08:25,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:08:24" (3/4) ... [2022-12-14 15:08:25,241 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 15:08:25,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:08:25,242 INFO L158 Benchmark]: Toolchain (without parser) took 1726.87ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 45.6MB in the beginning and 57.2MB in the end (delta: -11.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-12-14 15:08:25,243 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 48.2MB. Free memory was 26.9MB in the beginning and 26.8MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:08:25,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 844.28ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 45.5MB in the beginning and 48.6MB in the end (delta: -3.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2022-12-14 15:08:25,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.82ms. Allocated memory is still 86.0MB. Free memory was 48.6MB in the beginning and 45.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:08:25,244 INFO L158 Benchmark]: Boogie Preprocessor took 21.24ms. Allocated memory is still 86.0MB. Free memory was 45.6MB in the beginning and 43.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:08:25,245 INFO L158 Benchmark]: RCFGBuilder took 304.00ms. Allocated memory is still 86.0MB. Free memory was 43.5MB in the beginning and 51.2MB in the end (delta: -7.6MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-12-14 15:08:25,245 INFO L158 Benchmark]: TraceAbstraction took 509.63ms. Allocated memory is still 86.0MB. Free memory was 50.4MB in the beginning and 57.6MB in the end (delta: -7.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 15:08:25,246 INFO L158 Benchmark]: Witness Printer took 4.51ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 57.2MB in the end (delta: 460.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:08:25,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 48.2MB. Free memory was 26.9MB in the beginning and 26.8MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 844.28ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 45.5MB in the beginning and 48.6MB in the end (delta: -3.1MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.82ms. Allocated memory is still 86.0MB. Free memory was 48.6MB in the beginning and 45.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.24ms. Allocated memory is still 86.0MB. Free memory was 45.6MB in the beginning and 43.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.00ms. Allocated memory is still 86.0MB. Free memory was 43.5MB in the beginning and 51.2MB in the end (delta: -7.6MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * TraceAbstraction took 509.63ms. Allocated memory is still 86.0MB. Free memory was 50.4MB in the beginning and 57.6MB in the end (delta: -7.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 4.51ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 57.2MB in the end (delta: 460.5kB). 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: 1568]: 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_predec_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] [L1568] --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: 1568]: 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: 0.4s, 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=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, 0.0s 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 [2022-12-14 15:08:25,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3074732d-aa01-4a0a-bef4-297482be5017/bin/utaipan-gh47qXpMRh/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