./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_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_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 --- 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 06:19:05,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:19:05,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:19:05,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:19:05,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:19:05,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:19:05,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:19:05,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:19:05,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:19:05,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:19:05,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:19:05,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:19:05,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:19:05,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:19:05,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:19:05,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:19:05,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:19:05,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:19:05,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:19:05,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:19:05,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:19:05,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:19:05,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:19:05,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:19:05,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:19:05,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:19:05,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:19:05,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:19:05,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:19:05,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:19:05,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:19:05,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:19:05,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:19:05,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:19:05,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:19:05,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:19:05,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:19:05,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:19:05,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:19:05,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:19:05,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:19:05,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 06:19:05,102 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:19:05,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:19:05,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:19:05,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:19:05,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:19:05,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:19:05,104 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:19:05,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:19:05,104 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:19:05,104 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:19:05,104 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:19:05,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:19:05,105 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:19:05,105 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:19:05,105 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:19:05,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:19:05,105 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:19:05,105 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:19:05,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:19:05,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:19:05,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:19:05,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:19:05,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:19:05,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:19:05,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:19:05,107 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 06:19:05,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:19:05,107 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:19:05,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:19:05,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:19:05,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:19:05,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:19:05,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:19:05,108 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:19:05,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:19:05,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:19:05,109 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:19:05,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:19:05,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:19:05,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:19:05,109 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_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 [2022-12-14 06:19:05,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:19:05,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:19:05,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:19:05,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:19:05,337 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:19:05,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-14 06:19:07,915 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:19:08,155 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:19:08,156 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-14 06:19:08,169 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/data/9fff7fac2/2bb1f15725544aacb470fce182970ffe/FLAG0133dd246 [2022-12-14 06:19:08,494 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/data/9fff7fac2/2bb1f15725544aacb470fce182970ffe [2022-12-14 06:19:08,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:19:08,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:19:08,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:19:08,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:19:08,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:19:08,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:19:08" (1/1) ... [2022-12-14 06:19:08,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147f683b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:08, skipping insertion in model container [2022-12-14 06:19:08,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:19:08" (1/1) ... [2022-12-14 06:19:08,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:19:08,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:19:08,797 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:19:09,077 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:19:09,082 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:19:09,083 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:19:09,085 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:19:09,085 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:19:09,106 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:19:09,110 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:19:09,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:19:09,120 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:19:09,133 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:19:09,161 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:19:09,163 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:19:09,163 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:19:09,165 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:19:09,165 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:19:09,168 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:19:09,170 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:19:09,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:19:09,292 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:19:09,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09 WrapperNode [2022-12-14 06:19:09,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:19:09,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:19:09,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:19:09,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:19:09,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,342 INFO L138 Inliner]: procedures = 502, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 60 [2022-12-14 06:19:09,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:19:09,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:19:09,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:19:09,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:19:09,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,363 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:19:09,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:19:09,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:19:09,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:19:09,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (1/1) ... [2022-12-14 06:19:09,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:19:09,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:19:09,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:19:09,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:19:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 06:19:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 06:19:09,426 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 06:19:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:19:09,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 06:19:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:19:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:19:09,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:19:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:19:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 06:19:09,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:19:09,530 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:19:09,531 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:19:09,618 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:19:09,643 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:19:09,643 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:19:09,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:19:09 BoogieIcfgContainer [2022-12-14 06:19:09,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:19:09,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:19:09,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:19:09,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:19:09,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:19:08" (1/3) ... [2022-12-14 06:19:09,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63005261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:19:09, skipping insertion in model container [2022-12-14 06:19:09,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:09" (2/3) ... [2022-12-14 06:19:09,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63005261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:19:09, skipping insertion in model container [2022-12-14 06:19:09,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:19:09" (3/3) ... [2022-12-14 06:19:09,651 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-14 06:19:09,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:19:09,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 06:19:09,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:19:09,701 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;@4f61c75b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:19:09,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 06:19:09,704 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 06:19:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 06:19:09,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:19:09,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:19:09,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 06:19:09,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:19:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1162199373, now seen corresponding path program 1 times [2022-12-14 06:19:09,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:19:09,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342141038] [2022-12-14 06:19:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:19:09,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:19:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:19:09,818 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:19:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:19:09,851 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 06:19:09,852 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:19:09,853 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 06:19:09,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 06:19:09,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:19:09,858 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 06:19:09,861 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:19:09,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:19:09 BoogieIcfgContainer [2022-12-14 06:19:09,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:19:09,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:19:09,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:19:09,876 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:19:09,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:19:09" (3/4) ... [2022-12-14 06:19:09,879 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 06:19:09,879 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:19:09,880 INFO L158 Benchmark]: Toolchain (without parser) took 1381.86ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 85.3MB in the beginning and 113.4MB in the end (delta: -28.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-12-14 06:19:09,880 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:19:09,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 793.56ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 85.3MB in the beginning and 98.4MB in the end (delta: -13.1MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. [2022-12-14 06:19:09,881 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.31ms. Allocated memory is still 153.1MB. Free memory was 98.4MB in the beginning and 95.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 06:19:09,881 INFO L158 Benchmark]: Boogie Preprocessor took 22.79ms. Allocated memory is still 153.1MB. Free memory was 95.4MB in the beginning and 94.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:19:09,882 INFO L158 Benchmark]: RCFGBuilder took 278.29ms. Allocated memory is still 153.1MB. Free memory was 93.4MB in the beginning and 78.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 06:19:09,882 INFO L158 Benchmark]: TraceAbstraction took 229.05ms. Allocated memory is still 153.1MB. Free memory was 77.9MB in the beginning and 113.4MB in the end (delta: -35.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:19:09,882 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 153.1MB. Free memory is still 113.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:19:09,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 793.56ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 85.3MB in the beginning and 98.4MB in the end (delta: -13.1MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.31ms. Allocated memory is still 153.1MB. Free memory was 98.4MB in the beginning and 95.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.79ms. Allocated memory is still 153.1MB. Free memory was 95.4MB in the beginning and 94.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 278.29ms. Allocated memory is still 153.1MB. Free memory was 93.4MB in the beginning and 78.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 229.05ms. Allocated memory is still 153.1MB. Free memory was 77.9MB in the beginning and 113.4MB in the end (delta: -35.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 153.1MB. Free memory is still 113.4MB. 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: 1578]: 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); [L1570] 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) [L1570] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, argv={1073741828:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_fgets_predec_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_predec_65b_badSink; [L1553] 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)] = ""; [L1565] CALL funcPtr(data) [L1578] --data VAL [\old(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] - UnprovableResult [Line: 1578]: 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 06:19:09,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 --- 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 06:19:11,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:19:11,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:19:11,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:19:11,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:19:11,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:19:11,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:19:11,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:19:11,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:19:11,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:19:11,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:19:11,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:19:11,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:19:11,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:19:11,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:19:11,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:19:11,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:19:11,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:19:11,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:19:11,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:19:11,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:19:11,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:19:11,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:19:11,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:19:11,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:19:11,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:19:11,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:19:11,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:19:11,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:19:11,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:19:11,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:19:11,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:19:11,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:19:11,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:19:11,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:19:11,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:19:11,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:19:11,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:19:11,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:19:11,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:19:11,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:19:11,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 06:19:11,645 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:19:11,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:19:11,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:19:11,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:19:11,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:19:11,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:19:11,647 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:19:11,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:19:11,647 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:19:11,647 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:19:11,647 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:19:11,647 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:19:11,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:19:11,648 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:19:11,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:19:11,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:19:11,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:19:11,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:19:11,648 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:19:11,649 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 06:19:11,649 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 06:19:11,649 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 06:19:11,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:19:11,649 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:19:11,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:19:11,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:19:11,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 06:19:11,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:19:11,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:19:11,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:19:11,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:19:11,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:19:11,650 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 06:19:11,650 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 06:19:11,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:19:11,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:19:11,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 06:19:11,651 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_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 [2022-12-14 06:19:11,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:19:11,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:19:11,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:19:11,874 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:19:11,874 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:19:11,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-14 06:19:14,417 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:19:14,656 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:19:14,656 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-14 06:19:14,670 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/data/e4b301880/fc57801ce8774f3db7617df70f6e8e77/FLAG2bedbc358 [2022-12-14 06:19:14,972 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/data/e4b301880/fc57801ce8774f3db7617df70f6e8e77 [2022-12-14 06:19:14,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:19:14,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:19:14,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:19:14,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:19:14,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:19:14,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:19:14" (1/1) ... [2022-12-14 06:19:14,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7472c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:14, skipping insertion in model container [2022-12-14 06:19:14,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:19:14" (1/1) ... [2022-12-14 06:19:14,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:19:15,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:19:15,313 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:19:15,689 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:19:15,693 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:19:15,694 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:19:15,696 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:19:15,697 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:19:15,722 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:19:15,728 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:19:15,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:19:15,741 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:19:15,757 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:19:15,794 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:19:15,795 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:19:15,795 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:19:15,797 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:19:15,797 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:19:15,800 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:19:15,801 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:19:15,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:19:15,880 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:19:15,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15 WrapperNode [2022-12-14 06:19:15,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:19:15,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:19:15,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:19:15,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:19:15,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,918 INFO L138 Inliner]: procedures = 507, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2022-12-14 06:19:15,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:19:15,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:19:15,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:19:15,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:19:15,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,937 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:19:15,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:19:15,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:19:15,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:19:15,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (1/1) ... [2022-12-14 06:19:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:19:15,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:19:15,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:19:15,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:19:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 06:19:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 06:19:15,992 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 06:19:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:19:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 06:19:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:19:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:19:15,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:19:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:19:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 06:19:15,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 06:19:16,117 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:19:16,119 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:19:16,233 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:19:16,238 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:19:16,238 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:19:16,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:19:16 BoogieIcfgContainer [2022-12-14 06:19:16,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:19:16,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:19:16,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:19:16,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:19:16,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:19:14" (1/3) ... [2022-12-14 06:19:16,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba3d99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:19:16, skipping insertion in model container [2022-12-14 06:19:16,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:15" (2/3) ... [2022-12-14 06:19:16,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba3d99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:19:16, skipping insertion in model container [2022-12-14 06:19:16,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:19:16" (3/3) ... [2022-12-14 06:19:16,245 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-14 06:19:16,258 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:19:16,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 06:19:16,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:19:16,294 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;@10b3c69c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:19:16,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 06:19:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 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 06:19:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 06:19:16,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:19:16,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:19:16,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 06:19:16,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:19:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-12-14 06:19:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:19:16,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088965940] [2022-12-14 06:19:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:19:16,317 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 06:19:16,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:19:16,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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 06:19:16,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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 06:19:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:19:16,452 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:19:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:19:16,520 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 06:19:16,522 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:19:16,523 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 06:19:16,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 06:19:16,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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 06:19:16,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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 06:19:16,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 06:19:16,736 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:19:16,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:19:16 BoogieIcfgContainer [2022-12-14 06:19:16,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:19:16,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:19:16,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:19:16,767 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:19:16,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:19:16" (3/4) ... [2022-12-14 06:19:16,773 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 06:19:16,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:19:16,775 INFO L158 Benchmark]: Toolchain (without parser) took 1797.96ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 40.1MB in the beginning and 48.0MB in the end (delta: -7.9MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-12-14 06:19:16,775 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 48.2MB. Free memory is still 27.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:19:16,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 903.64ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 39.9MB in the beginning and 47.0MB in the end (delta: -7.1MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-12-14 06:19:16,777 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.48ms. Allocated memory is still 79.7MB. Free memory was 47.0MB in the beginning and 43.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 06:19:16,778 INFO L158 Benchmark]: Boogie Preprocessor took 21.77ms. Allocated memory is still 79.7MB. Free memory was 43.7MB in the beginning and 42.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:19:16,779 INFO L158 Benchmark]: RCFGBuilder took 298.07ms. Allocated memory is still 79.7MB. Free memory was 41.6MB in the beginning and 46.2MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 06:19:16,780 INFO L158 Benchmark]: TraceAbstraction took 524.96ms. Allocated memory is still 79.7MB. Free memory was 45.8MB in the beginning and 48.3MB in the end (delta: -2.5MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2022-12-14 06:19:16,781 INFO L158 Benchmark]: Witness Printer took 6.49ms. Allocated memory is still 79.7MB. Free memory was 48.3MB in the beginning and 48.0MB in the end (delta: 272.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:19:16,785 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 48.2MB. Free memory is still 27.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 903.64ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 39.9MB in the beginning and 47.0MB in the end (delta: -7.1MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.48ms. Allocated memory is still 79.7MB. Free memory was 47.0MB in the beginning and 43.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.77ms. Allocated memory is still 79.7MB. Free memory was 43.7MB in the beginning and 42.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 298.07ms. Allocated memory is still 79.7MB. Free memory was 41.6MB in the beginning and 46.2MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 524.96ms. Allocated memory is still 79.7MB. Free memory was 45.8MB in the beginning and 48.3MB in the end (delta: -2.5MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Witness Printer took 6.49ms. Allocated memory is still 79.7MB. Free memory was 48.3MB in the beginning and 48.0MB in the end (delta: 272.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1578]: 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] [L1570] 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) [L1570] 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] [L1571] CALL CWE191_Integer_Underflow__int_fgets_predec_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_predec_65b_badSink; [L1553] 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)] = ""; [L1565] CALL funcPtr(data) [L1578] --data VAL [\old(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] - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s 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 [2022-12-14 06:19:16,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfadf8a4-93e1-47fc-8819-58f4c0b5a8eb/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