./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/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_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/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_5b0f3824-9c2a-4a48-a9f8-0d4091193576/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 e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:27:54,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:27:54,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:27:54,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:27:54,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:27:54,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:27:54,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:27:54,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:27:54,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:27:54,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:27:54,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:27:54,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:27:54,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:27:54,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:27:54,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:27:54,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:27:54,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:27:54,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:27:54,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:27:54,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:27:54,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:27:54,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:27:54,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:27:54,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:27:54,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:27:54,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:27:54,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:27:54,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:27:54,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:27:54,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:27:54,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:27:54,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:27:54,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:27:54,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:27:54,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:27:54,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:27:54,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:27:54,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:27:54,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:27:54,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:27:54,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:27:54,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 00:27:54,816 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:27:54,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:27:54,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:27:54,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:27:54,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:27:54,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:27:54,819 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:27:54,819 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:27:54,819 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:27:54,819 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:27:54,820 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:27:54,821 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:27:54,821 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:27:54,821 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:27:54,821 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:27:54,822 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:27:54,822 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:27:54,822 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:27:54,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:27:54,823 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:27:54,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:27:54,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:27:54,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:27:54,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:27:54,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:27:54,824 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:27:54,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:27:54,825 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:27:54,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:27:54,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:27:54,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:27:54,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:27:54,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:27:54,826 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:27:54,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:27:54,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:27:54,827 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:27:54,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:27:54,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:27:54,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:27:54,829 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_5b0f3824-9c2a-4a48-a9f8-0d4091193576/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2022-11-26 00:27:55,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:27:55,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:27:55,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:27:55,165 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:27:55,166 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:27:55,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-26 00:27:58,253 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:27:58,698 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:27:58,699 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-26 00:27:58,744 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/data/4c74d4ba0/c766c72b1ddd410fb91ae0901d70e308/FLAG32fbc56c8 [2022-11-26 00:27:58,773 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/data/4c74d4ba0/c766c72b1ddd410fb91ae0901d70e308 [2022-11-26 00:27:58,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:27:58,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:27:58,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:58,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:27:58,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:27:58,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:58" (1/1) ... [2022-11-26 00:27:58,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a625550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:58, skipping insertion in model container [2022-11-26 00:27:58,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:58" (1/1) ... [2022-11-26 00:27:58,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:27:58,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:27:59,286 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:27:59,698 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:27:59,708 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:27:59,710 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:27:59,713 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:27:59,714 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:27:59,730 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:27:59,736 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:27:59,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:59,751 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:27:59,772 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:27:59,827 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:27:59,829 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:27:59,830 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:27:59,837 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:27:59,839 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:27:59,849 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:27:59,854 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:27:59,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:59,990 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:27:59,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59 WrapperNode [2022-11-26 00:27:59,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:59,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:27:59,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:27:59,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:28:00,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,081 INFO L138 Inliner]: procedures = 500, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-11-26 00:28:00,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:28:00,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:28:00,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:28:00,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:28:00,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,133 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:28:00,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:28:00,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:28:00,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:28:00,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (1/1) ... [2022-11-26 00:28:00,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:28:00,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:00,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:28:00,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:28:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:28:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:28:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:28:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:28:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:28:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:28:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:28:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:28:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:28:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:28:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:28:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:28:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:28:00,404 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:28:00,406 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:28:00,613 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:28:00,663 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:28:00,663 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:28:00,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:00 BoogieIcfgContainer [2022-11-26 00:28:00,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:28:00,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:28:00,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:28:00,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:28:00,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:27:58" (1/3) ... [2022-11-26 00:28:00,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3df4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:00, skipping insertion in model container [2022-11-26 00:28:00,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:59" (2/3) ... [2022-11-26 00:28:00,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3df4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:00, skipping insertion in model container [2022-11-26 00:28:00,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:00" (3/3) ... [2022-11-26 00:28:00,675 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-26 00:28:00,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:28:00,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:28:00,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:28:00,764 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;@7a348d0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:28:00,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:28:00,770 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) [2022-11-26 00:28:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:28:00,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:00,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:00,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:28:00,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -135244463, now seen corresponding path program 1 times [2022-11-26 00:28:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:28:00,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604915515] [2022-11-26 00:28:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:00,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:28:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:28:01,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:28:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:28:01,142 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:28:01,144 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:28:01,145 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:28:01,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:28:01,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:28:01,163 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:28:01,167 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:28:01,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:28:01 BoogieIcfgContainer [2022-11-26 00:28:01,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:28:01,192 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:28:01,192 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:28:01,192 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:28:01,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:00" (3/4) ... [2022-11-26 00:28:01,196 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:28:01,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:28:01,197 INFO L158 Benchmark]: Toolchain (without parser) took 2420.38ms. Allocated memory is still 148.9MB. Free memory was 121.0MB in the beginning and 99.4MB in the end (delta: 21.5MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-26 00:28:01,198 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:28:01,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1216.05ms. Allocated memory is still 148.9MB. Free memory was 120.6MB in the beginning and 57.0MB in the end (delta: 63.6MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2022-11-26 00:28:01,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.06ms. Allocated memory is still 148.9MB. Free memory was 57.0MB in the beginning and 54.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:28:01,200 INFO L158 Benchmark]: Boogie Preprocessor took 53.86ms. Allocated memory is still 148.9MB. Free memory was 54.3MB in the beginning and 52.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:28:01,200 INFO L158 Benchmark]: RCFGBuilder took 528.78ms. Allocated memory is still 148.9MB. Free memory was 52.9MB in the beginning and 118.2MB in the end (delta: -65.3MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2022-11-26 00:28:01,201 INFO L158 Benchmark]: TraceAbstraction took 523.44ms. Allocated memory is still 148.9MB. Free memory was 117.3MB in the beginning and 99.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-26 00:28:01,201 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 148.9MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:28:01,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1216.05ms. Allocated memory is still 148.9MB. Free memory was 120.6MB in the beginning and 57.0MB in the end (delta: 63.6MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.06ms. Allocated memory is still 148.9MB. Free memory was 57.0MB in the beginning and 54.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.86ms. Allocated memory is still 148.9MB. Free memory was 54.3MB in the beginning and 52.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 528.78ms. Allocated memory is still 148.9MB. Free memory was 52.9MB in the beginning and 118.2MB in the end (delta: -65.3MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * TraceAbstraction took 523.44ms. Allocated memory is still 148.9MB. Free memory was 117.3MB in the beginning and 99.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 148.9MB. Free memory is still 99.4MB. 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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); [L1581] 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=1073741825, argc=1073741825, 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] [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data - 1 VAL [data=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] - UnprovableResult [Line: 1573]: 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: 0.4s, 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=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, 0.1s 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 [2022-11-26 00:28:01,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/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_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/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_5b0f3824-9c2a-4a48-a9f8-0d4091193576/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 e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:28:03,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:28:03,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:28:03,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:28:03,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:28:03,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:28:03,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:28:03,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:28:03,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:28:03,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:28:03,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:28:03,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:28:03,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:28:03,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:28:03,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:28:03,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:28:03,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:28:03,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:28:03,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:28:03,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:28:03,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:28:03,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:28:03,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:28:03,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:28:03,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:28:03,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:28:03,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:28:03,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:28:03,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:28:03,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:28:03,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:28:03,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:28:03,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:28:03,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:28:03,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:28:03,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:28:03,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:28:03,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:28:03,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:28:03,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:28:03,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:28:03,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-26 00:28:03,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:28:03,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:28:03,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:28:03,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:28:03,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:28:03,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:28:03,856 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:28:03,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:28:03,856 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:28:03,856 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:28:03,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:28:03,857 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:28:03,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:28:03,858 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:28:03,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:28:03,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:28:03,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:28:03,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:28:03,859 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:28:03,859 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:28:03,860 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:28:03,860 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:28:03,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:28:03,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:28:03,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:28:03,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:28:03,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:28:03,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:28:03,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:28:03,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:28:03,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:28:03,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:28:03,862 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:28:03,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:03,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:28:03,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:28:03,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:28:03,863 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_5b0f3824-9c2a-4a48-a9f8-0d4091193576/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2022-11-26 00:28:04,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:28:04,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:28:04,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:28:04,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:28:04,285 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:28:04,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-26 00:28:07,672 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:28:08,136 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:28:08,137 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-26 00:28:08,170 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/data/7fa043045/8f24b1d38586476fb4a3d5e3bcb23c33/FLAGc07a32687 [2022-11-26 00:28:08,198 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/data/7fa043045/8f24b1d38586476fb4a3d5e3bcb23c33 [2022-11-26 00:28:08,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:28:08,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:28:08,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:28:08,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:28:08,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:28:08,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:28:08" (1/1) ... [2022-11-26 00:28:08,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677187e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:08, skipping insertion in model container [2022-11-26 00:28:08,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:28:08" (1/1) ... [2022-11-26 00:28:08,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:28:08,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:28:08,787 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:28:09,334 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:28:09,340 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:28:09,343 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:28:09,356 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:28:09,357 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:28:09,377 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:28:09,383 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:28:09,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:28:09,398 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:28:09,419 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:28:09,470 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:28:09,472 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:28:09,473 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:28:09,475 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:28:09,476 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:28:09,485 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:28:09,488 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:28:09,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:28:09,630 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:28:09,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09 WrapperNode [2022-11-26 00:28:09,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:28:09,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:28:09,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:28:09,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:28:09,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,696 INFO L138 Inliner]: procedures = 505, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-11-26 00:28:09,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:28:09,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:28:09,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:28:09,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:28:09,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,725 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:28:09,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:28:09,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:28:09,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:28:09,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (1/1) ... [2022-11-26 00:28:09,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:28:09,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:09,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:28:09,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:28:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:28:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:28:09,809 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:28:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:28:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:28:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:28:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:28:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:28:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-26 00:28:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:28:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-26 00:28:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:28:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-26 00:28:10,050 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:28:10,053 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:28:10,244 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:28:10,250 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:28:10,250 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:28:10,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:10 BoogieIcfgContainer [2022-11-26 00:28:10,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:28:10,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:28:10,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:28:10,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:28:10,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:28:08" (1/3) ... [2022-11-26 00:28:10,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3298264c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:10, skipping insertion in model container [2022-11-26 00:28:10,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:28:09" (2/3) ... [2022-11-26 00:28:10,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3298264c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:28:10, skipping insertion in model container [2022-11-26 00:28:10,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:10" (3/3) ... [2022-11-26 00:28:10,263 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-26 00:28:10,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:28:10,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:28:10,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:28:10,337 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;@664ad43a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:28:10,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:28:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:28:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:28:10,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:10,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:28:10,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:28:10,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-11-26 00:28:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:10,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239912398] [2022-11-26 00:28:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:28:10,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:10,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:10,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:10,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:28:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:28:10,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:28:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:28:10,712 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 00:28:10,714 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:28:10,716 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:28:10,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:28:10,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:10,937 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:28:10,940 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:28:10,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:28:10 BoogieIcfgContainer [2022-11-26 00:28:10,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:28:10,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:28:10,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:28:10,974 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:28:10,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:28:10" (3/4) ... [2022-11-26 00:28:10,978 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:28:10,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:28:10,979 INFO L158 Benchmark]: Toolchain (without parser) took 2772.84ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 51.6MB in the beginning and 46.1MB in the end (delta: 5.5MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2022-11-26 00:28:10,980 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 62.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:28:10,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1422.77ms. Allocated memory is still 77.6MB. Free memory was 51.4MB in the beginning and 47.0MB in the end (delta: 4.4MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-26 00:28:10,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.97ms. Allocated memory is still 77.6MB. Free memory was 46.6MB in the beginning and 43.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:28:10,982 INFO L158 Benchmark]: Boogie Preprocessor took 33.72ms. Allocated memory is still 77.6MB. Free memory was 43.6MB in the beginning and 41.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:28:10,982 INFO L158 Benchmark]: RCFGBuilder took 521.45ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 41.7MB in the beginning and 64.8MB in the end (delta: -23.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-26 00:28:10,983 INFO L158 Benchmark]: TraceAbstraction took 717.34ms. Allocated memory is still 94.4MB. Free memory was 64.4MB in the beginning and 46.6MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-26 00:28:10,983 INFO L158 Benchmark]: Witness Printer took 4.56ms. Allocated memory is still 94.4MB. Free memory was 46.6MB in the beginning and 46.1MB in the end (delta: 516.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:28:10,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 62.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1422.77ms. Allocated memory is still 77.6MB. Free memory was 51.4MB in the beginning and 47.0MB in the end (delta: 4.4MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.97ms. Allocated memory is still 77.6MB. Free memory was 46.6MB in the beginning and 43.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.72ms. Allocated memory is still 77.6MB. Free memory was 43.6MB in the beginning and 41.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.45ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 41.7MB in the beginning and 64.8MB in the end (delta: -23.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 717.34ms. Allocated memory is still 94.4MB. Free memory was 64.4MB in the beginning and 46.6MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.56ms. Allocated memory is still 94.4MB. Free memory was 46.6MB in the beginning and 46.1MB in the end (delta: 516.0kB). 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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] [L1581] 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={18:13}, argv={18:13}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data - 1 VAL [data=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={12:0}] - UnprovableResult [Line: 1573]: 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, 22 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=22occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:28:11,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b0f3824-9c2a-4a48-a9f8-0d4091193576/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