./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/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_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/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_22868f3a-6c46-441e-aabf-aa445fae9842/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 cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 --- 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 07:26:34,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:26:34,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:26:34,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:26:34,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:26:34,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:26:34,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:26:34,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:26:34,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:26:34,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:26:34,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:26:34,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:26:34,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:26:34,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:26:34,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:26:34,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:26:34,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:26:34,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:26:34,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:26:34,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:26:34,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:26:34,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:26:34,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:26:34,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:26:34,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:26:34,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:26:34,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:26:34,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:26:34,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:26:34,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:26:34,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:26:34,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:26:34,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:26:34,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:26:34,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:26:34,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:26:34,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:26:34,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:26:34,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:26:34,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:26:34,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:26:34,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 07:26:34,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:26:34,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:26:34,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:26:34,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:26:34,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:26:34,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:26:34,158 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:26:34,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:26:34,158 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:26:34,158 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:26:34,158 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:26:34,159 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:26:34,159 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:26:34,159 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:26:34,159 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:26:34,159 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:26:34,159 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:26:34,159 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:26:34,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:26:34,160 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:26:34,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:26:34,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:26:34,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:26:34,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:26:34,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:26:34,161 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 07:26:34,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:26:34,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:26:34,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:26:34,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:26:34,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:26:34,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:26:34,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:26:34,162 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:26:34,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:26:34,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:26:34,162 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:26:34,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:26:34,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:26:34,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:26:34,168 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_22868f3a-6c46-441e-aabf-aa445fae9842/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 [2022-12-14 07:26:34,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:26:34,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:26:34,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:26:34,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:26:34,354 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:26:34,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-12-14 07:26:36,892 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:26:37,114 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:26:37,115 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-12-14 07:26:37,127 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/data/d0a0cc716/7701f699bd4e4542916e7c434db80cd3/FLAG591b92ac0 [2022-12-14 07:26:37,442 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/data/d0a0cc716/7701f699bd4e4542916e7c434db80cd3 [2022-12-14 07:26:37,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:26:37,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:26:37,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:26:37,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:26:37,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:26:37,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:26:37" (1/1) ... [2022-12-14 07:26:37,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2860c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:37, skipping insertion in model container [2022-12-14 07:26:37,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:26:37" (1/1) ... [2022-12-14 07:26:37,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:26:37,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:26:37,707 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 07:26:37,982 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:26:37,986 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:26:37,988 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:26:37,990 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:26:37,990 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:26:38,003 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 07:26:38,007 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 07:26:38,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:26:38,016 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:26:38,029 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 07:26:38,061 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:26:38,062 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:26:38,063 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:26:38,064 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:26:38,065 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:26:38,068 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 07:26:38,069 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 07:26:38,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:26:38,149 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:26:38,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38 WrapperNode [2022-12-14 07:26:38,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:26:38,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:26:38,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:26:38,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:26:38,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,187 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 07:26:38,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:26:38,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:26:38,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:26:38,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:26:38,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,202 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:26:38,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:26:38,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:26:38,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:26:38,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (1/1) ... [2022-12-14 07:26:38,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:26:38,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:26:38,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:26:38,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:26:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 07:26:38,258 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 07:26:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 07:26:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:26:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 07:26:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:26:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:26:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:26:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:26:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 07:26:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:26:38,364 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:26:38,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:26:38,453 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:26:38,478 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:26:38,478 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 07:26:38,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:26:38 BoogieIcfgContainer [2022-12-14 07:26:38,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:26:38,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:26:38,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:26:38,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:26:38,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:26:37" (1/3) ... [2022-12-14 07:26:38,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25521b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:26:38, skipping insertion in model container [2022-12-14 07:26:38,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:38" (2/3) ... [2022-12-14 07:26:38,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25521b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:26:38, skipping insertion in model container [2022-12-14 07:26:38,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:26:38" (3/3) ... [2022-12-14 07:26:38,486 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-12-14 07:26:38,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:26:38,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 07:26:38,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:26:38,540 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;@4962fc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:26:38,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 07:26:38,543 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 07:26:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:26:38,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:26:38,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:26:38,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:26:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:26:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1525370958, now seen corresponding path program 1 times [2022-12-14 07:26:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:26:38,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426387751] [2022-12-14 07:26:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:26:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:26:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:26:38,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:26:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:26:38,684 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 07:26:38,685 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:26:38,686 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 07:26:38,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 07:26:38,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:26:38,691 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 07:26:38,694 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:26:38,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:26:38 BoogieIcfgContainer [2022-12-14 07:26:38,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:26:38,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:26:38,709 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:26:38,709 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:26:38,709 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:26:38" (3/4) ... [2022-12-14 07:26:38,712 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 07:26:38,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:26:38,713 INFO L158 Benchmark]: Toolchain (without parser) took 1267.38ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 60.9MB in the beginning and 74.6MB in the end (delta: -13.8MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-12-14 07:26:38,713 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:26:38,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.79ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 60.6MB in the beginning and 111.2MB in the end (delta: -50.6MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2022-12-14 07:26:38,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.22ms. Allocated memory is still 151.0MB. Free memory was 111.2MB in the beginning and 108.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:26:38,714 INFO L158 Benchmark]: Boogie Preprocessor took 16.40ms. Allocated memory is still 151.0MB. Free memory was 108.1MB in the beginning and 107.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:26:38,715 INFO L158 Benchmark]: RCFGBuilder took 274.98ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 92.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 07:26:38,715 INFO L158 Benchmark]: TraceAbstraction took 227.19ms. Allocated memory is still 151.0MB. Free memory was 91.4MB in the beginning and 74.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 07:26:38,716 INFO L158 Benchmark]: Witness Printer took 2.80ms. Allocated memory is still 151.0MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:26:38,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.79ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 60.6MB in the beginning and 111.2MB in the end (delta: -50.6MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.22ms. Allocated memory is still 151.0MB. Free memory was 111.2MB in the beginning and 108.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.40ms. Allocated memory is still 151.0MB. Free memory was 108.1MB in the beginning and 107.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 274.98ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 92.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 227.19ms. Allocated memory is still 151.0MB. Free memory was 91.4MB in the beginning and 74.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.80ms. Allocated memory is still 151.0MB. Free memory is still 74.6MB. 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); [L1575] 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) [L1575] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_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 - 1 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 07:26:38,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/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_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/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_22868f3a-6c46-441e-aabf-aa445fae9842/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 cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 --- 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 07:26:40,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:26:40,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:26:40,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:26:40,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:26:40,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:26:40,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:26:40,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:26:40,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:26:40,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:26:40,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:26:40,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:26:40,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:26:40,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:26:40,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:26:40,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:26:40,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:26:40,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:26:40,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:26:40,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:26:40,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:26:40,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:26:40,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:26:40,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:26:40,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:26:40,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:26:40,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:26:40,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:26:40,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:26:40,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:26:40,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:26:40,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:26:40,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:26:40,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:26:40,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:26:40,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:26:40,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:26:40,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:26:40,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:26:40,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:26:40,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:26:40,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 07:26:40,315 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:26:40,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:26:40,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:26:40,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:26:40,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:26:40,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:26:40,317 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:26:40,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:26:40,317 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:26:40,317 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:26:40,317 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:26:40,317 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:26:40,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:26:40,318 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:26:40,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:26:40,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:26:40,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:26:40,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:26:40,318 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:26:40,319 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 07:26:40,319 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 07:26:40,319 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 07:26:40,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:26:40,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:26:40,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:26:40,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:26:40,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 07:26:40,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:26:40,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:26:40,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:26:40,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:26:40,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:26:40,320 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 07:26:40,320 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 07:26:40,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:26:40,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:26:40,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 07:26:40,321 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_22868f3a-6c46-441e-aabf-aa445fae9842/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 [2022-12-14 07:26:40,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:26:40,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:26:40,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:26:40,538 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:26:40,539 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:26:40,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-12-14 07:26:43,148 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:26:43,367 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:26:43,368 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-12-14 07:26:43,381 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/data/149241d68/df4cd83ac90b46b8bd6672690f78852a/FLAG262f9aff2 [2022-12-14 07:26:43,391 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/data/149241d68/df4cd83ac90b46b8bd6672690f78852a [2022-12-14 07:26:43,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:26:43,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:26:43,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:26:43,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:26:43,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:26:43,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:26:43" (1/1) ... [2022-12-14 07:26:43,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e1a253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:43, skipping insertion in model container [2022-12-14 07:26:43,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:26:43" (1/1) ... [2022-12-14 07:26:43,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:26:43,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:26:43,685 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 07:26:43,968 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:26:43,973 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:26:43,974 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:26:43,975 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:26:43,976 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:26:43,989 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 07:26:43,993 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 07:26:43,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:26:44,005 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:26:44,020 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 07:26:44,057 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 07:26:44,058 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:26:44,059 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 07:26:44,060 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:26:44,061 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 07:26:44,063 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 07:26:44,065 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 07:26:44,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:26:44,160 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:26:44,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44 WrapperNode [2022-12-14 07:26:44,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:26:44,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:26:44,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:26:44,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:26:44,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,198 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-12-14 07:26:44,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:26:44,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:26:44,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:26:44,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:26:44,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:26:44,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:26:44,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:26:44,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:26:44,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (1/1) ... [2022-12-14 07:26:44,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:26:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:26:44,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:26:44,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:26:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 07:26:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 07:26:44,269 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 07:26:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:26:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 07:26:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:26:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:26:44,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:26:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:26:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 07:26:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 07:26:44,386 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:26:44,387 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:26:44,495 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:26:44,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:26:44,502 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 07:26:44,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:26:44 BoogieIcfgContainer [2022-12-14 07:26:44,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:26:44,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:26:44,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:26:44,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:26:44,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:26:43" (1/3) ... [2022-12-14 07:26:44,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4044d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:26:44, skipping insertion in model container [2022-12-14 07:26:44,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:26:44" (2/3) ... [2022-12-14 07:26:44,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4044d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:26:44, skipping insertion in model container [2022-12-14 07:26:44,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:26:44" (3/3) ... [2022-12-14 07:26:44,511 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-12-14 07:26:44,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:26:44,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 07:26:44,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:26:44,570 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;@775d58be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:26:44,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 07:26:44,574 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 07:26:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:26:44,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:26:44,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:26:44,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 07:26:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:26:44,586 INFO L85 PathProgramCache]: Analyzing trace with hash 924028237, now seen corresponding path program 1 times [2022-12-14 07:26:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:26:44,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622090781] [2022-12-14 07:26:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:26:44,598 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 07:26:44,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:26:44,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/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 07:26:44,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/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 07:26:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:26:44,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 07:26:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 07:26:44,786 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 07:26:44,788 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 07:26:44,789 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 07:26:44,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 07:26:44,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/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 07:26:44,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/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 07:26:44,997 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 07:26:45,002 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:26:45,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:26:45 BoogieIcfgContainer [2022-12-14 07:26:45,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:26:45,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:26:45,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:26:45,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:26:45,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:26:44" (3/4) ... [2022-12-14 07:26:45,031 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 07:26:45,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:26:45,032 INFO L158 Benchmark]: Toolchain (without parser) took 1637.68ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 34.7MB in the beginning and 35.8MB in the end (delta: -1.1MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2022-12-14 07:26:45,033 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:26:45,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 765.39ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 34.5MB in the beginning and 49.4MB in the end (delta: -14.9MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2022-12-14 07:26:45,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.41ms. Allocated memory is still 81.8MB. Free memory was 49.4MB in the beginning and 46.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:26:45,034 INFO L158 Benchmark]: Boogie Preprocessor took 20.45ms. Allocated memory is still 81.8MB. Free memory was 46.2MB in the beginning and 44.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:26:45,035 INFO L158 Benchmark]: RCFGBuilder took 283.72ms. Allocated memory is still 81.8MB. Free memory was 44.1MB in the beginning and 54.1MB in the end (delta: -10.0MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2022-12-14 07:26:45,035 INFO L158 Benchmark]: TraceAbstraction took 520.38ms. Allocated memory is still 81.8MB. Free memory was 53.2MB in the beginning and 36.3MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 07:26:45,036 INFO L158 Benchmark]: Witness Printer took 4.69ms. Allocated memory is still 81.8MB. Free memory was 36.3MB in the beginning and 35.8MB in the end (delta: 549.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:26:45,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 765.39ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 34.5MB in the beginning and 49.4MB in the end (delta: -14.9MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.41ms. Allocated memory is still 81.8MB. Free memory was 49.4MB in the beginning and 46.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.45ms. Allocated memory is still 81.8MB. Free memory was 46.2MB in the beginning and 44.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.72ms. Allocated memory is still 81.8MB. Free memory was 44.1MB in the beginning and 54.1MB in the end (delta: -10.0MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * TraceAbstraction took 520.38ms. Allocated memory is still 81.8MB. Free memory was 53.2MB in the beginning and 36.3MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.69ms. Allocated memory is still 81.8MB. Free memory was 36.3MB in the beginning and 35.8MB in the end (delta: 549.2kB). Peak memory consumption was 2.1MB. 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] [L1575] 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) [L1575] 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] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_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 - 1 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 07:26:45,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22868f3a-6c46-441e-aabf-aa445fae9842/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample