./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2cfcdf9a23c3aff1299e58ae710f9b2e69c51ca6676ee742443a89d14241bc80 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:25:26,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:25:26,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:25:27,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:25:27,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:25:27,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:25:27,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:25:27,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:25:27,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:25:27,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:25:27,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:25:27,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:25:27,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:25:27,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:25:27,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:25:27,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:25:27,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:25:27,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:25:27,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:25:27,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:25:27,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:25:27,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:25:27,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:25:27,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:25:27,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:25:27,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:25:27,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:25:27,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:25:27,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:25:27,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:25:27,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:25:27,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:25:27,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:25:27,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:25:27,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:25:27,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:25:27,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:25:27,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:25:27,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:25:27,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:25:27,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:25:27,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 00:25:27,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:25:27,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:25:27,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:25:27,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:25:27,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:25:27,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:25:27,062 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:25:27,062 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:25:27,062 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:25:27,062 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:25:27,063 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:25:27,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:25:27,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:25:27,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:25:27,063 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:25:27,063 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:25:27,064 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:25:27,064 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:25:27,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:25:27,065 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:25:27,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:25:27,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:25:27,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:25:27,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:25:27,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:25:27,066 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:25:27,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:25:27,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:25:27,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:25:27,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:25:27,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:25:27,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:25:27,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:25:27,067 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:25:27,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:25:27,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:25:27,068 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:25:27,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:25:27,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:25:27,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:25:27,068 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_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cfcdf9a23c3aff1299e58ae710f9b2e69c51ca6676ee742443a89d14241bc80 [2022-11-26 00:25:27,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:25:27,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:25:27,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:25:27,384 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:25:27,385 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:25:27,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-11-26 00:25:30,451 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:25:30,932 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:25:30,933 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-11-26 00:25:30,954 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/data/093420c3c/11e9004d803c45dc84ded0e68699aedf/FLAG2bdff281f [2022-11-26 00:25:30,969 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/data/093420c3c/11e9004d803c45dc84ded0e68699aedf [2022-11-26 00:25:30,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:25:30,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:25:30,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:25:30,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:25:30,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:25:30,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:25:30" (1/1) ... [2022-11-26 00:25:30,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433579a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:30, skipping insertion in model container [2022-11-26 00:25:30,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:25:30" (1/1) ... [2022-11-26 00:25:30,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:25:31,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:25:31,551 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:25:32,070 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:25:32,077 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:25:32,079 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:25:32,081 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:25:32,081 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:25:32,104 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:25:32,110 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:25:32,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:25:32,121 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:25:32,141 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:25:32,209 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:25:32,218 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:25:32,220 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:25:32,226 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:25:32,226 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:25:32,231 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:25:32,233 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:25:32,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:25:32,454 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:25:32,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32 WrapperNode [2022-11-26 00:25:32,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:25:32,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:25:32,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:25:32,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:25:32,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,506 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-26 00:25:32,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:25:32,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:25:32,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:25:32,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:25:32,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:25:32,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:25:32,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:25:32,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:25:32,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (1/1) ... [2022-11-26 00:25:32,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:25:32,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:25:32,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:25:32,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:25:32,634 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:25:32,634 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:25:32,634 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:25:32,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:25:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:25:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:25:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:25:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:25:32,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:25:32,636 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:25:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:25:32,839 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:25:32,842 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:25:32,992 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:25:33,022 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:25:33,031 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:25:33,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:25:33 BoogieIcfgContainer [2022-11-26 00:25:33,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:25:33,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:25:33,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:25:33,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:25:33,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:25:30" (1/3) ... [2022-11-26 00:25:33,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4c3221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:25:33, skipping insertion in model container [2022-11-26 00:25:33,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:32" (2/3) ... [2022-11-26 00:25:33,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4c3221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:25:33, skipping insertion in model container [2022-11-26 00:25:33,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:25:33" (3/3) ... [2022-11-26 00:25:33,042 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-11-26 00:25:33,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:25:33,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:25:33,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:25:33,117 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;@2a87e039, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:25:33,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:25:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:25:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:25:33,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:25:33,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:25:33,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:25:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:25:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash -135244463, now seen corresponding path program 1 times [2022-11-26 00:25:33,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:25:33,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099518500] [2022-11-26 00:25:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:25:33,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:25:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:25:33,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:25:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:25:33,417 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:25:33,419 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:25:33,420 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:25:33,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:25:33,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:25:33,428 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:25:33,432 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:25:33,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:25:33 BoogieIcfgContainer [2022-11-26 00:25:33,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:25:33,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:25:33,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:25:33,456 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:25:33,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:25:33" (3/4) ... [2022-11-26 00:25:33,460 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:25:33,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:25:33,461 INFO L158 Benchmark]: Toolchain (without parser) took 2488.18ms. Allocated memory is still 140.5MB. Free memory was 108.9MB in the beginning and 57.2MB in the end (delta: 51.7MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2022-11-26 00:25:33,462 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:25:33,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1482.27ms. Allocated memory is still 140.5MB. Free memory was 108.5MB in the beginning and 94.1MB in the end (delta: 14.5MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. [2022-11-26 00:25:33,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.08ms. Allocated memory is still 140.5MB. Free memory was 94.1MB in the beginning and 91.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:25:33,464 INFO L158 Benchmark]: Boogie Preprocessor took 30.88ms. Allocated memory is still 140.5MB. Free memory was 91.5MB in the beginning and 90.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:25:33,464 INFO L158 Benchmark]: RCFGBuilder took 495.41ms. Allocated memory is still 140.5MB. Free memory was 90.0MB in the beginning and 75.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:25:33,465 INFO L158 Benchmark]: TraceAbstraction took 419.25ms. Allocated memory is still 140.5MB. Free memory was 75.3MB in the beginning and 58.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-26 00:25:33,466 INFO L158 Benchmark]: Witness Printer took 4.66ms. Allocated memory is still 140.5MB. Free memory was 58.0MB in the beginning and 57.2MB in the end (delta: 777.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:25:33,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1482.27ms. Allocated memory is still 140.5MB. Free memory was 108.5MB in the beginning and 94.1MB in the end (delta: 14.5MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.08ms. Allocated memory is still 140.5MB. Free memory was 94.1MB in the beginning and 91.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.88ms. Allocated memory is still 140.5MB. Free memory was 91.5MB in the beginning and 90.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.41ms. Allocated memory is still 140.5MB. Free memory was 90.0MB in the beginning and 75.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 419.25ms. Allocated memory is still 140.5MB. Free memory was 75.3MB in the beginning and 58.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.66ms. Allocated memory is still 140.5MB. Free memory was 58.0MB in the beginning and 57.2MB in the end (delta: 777.0kB). 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: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] data - 1 VAL [data=-2147483648, data=-2147483648, dataCopy=-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: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:25:33,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2cfcdf9a23c3aff1299e58ae710f9b2e69c51ca6676ee742443a89d14241bc80 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:25:35,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:25:35,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:25:36,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:25:36,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:25:36,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:25:36,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:25:36,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:25:36,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:25:36,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:25:36,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:25:36,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:25:36,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:25:36,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:25:36,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:25:36,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:25:36,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:25:36,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:25:36,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:25:36,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:25:36,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:25:36,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:25:36,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:25:36,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:25:36,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:25:36,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:25:36,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:25:36,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:25:36,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:25:36,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:25:36,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:25:36,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:25:36,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:25:36,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:25:36,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:25:36,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:25:36,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:25:36,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:25:36,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:25:36,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:25:36,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:25:36,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-26 00:25:36,110 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:25:36,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:25:36,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:25:36,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:25:36,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:25:36,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:25:36,118 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:25:36,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:25:36,119 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:25:36,120 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:25:36,121 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:25:36,121 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:25:36,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:25:36,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:25:36,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:25:36,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:25:36,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:25:36,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:25:36,124 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:25:36,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:25:36,124 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:25:36,124 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:25:36,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:25:36,125 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:25:36,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:25:36,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:25:36,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:25:36,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:25:36,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:25:36,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:25:36,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:25:36,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:25:36,128 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:25:36,128 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:25:36,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:25:36,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:25:36,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:25:36,129 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_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cfcdf9a23c3aff1299e58ae710f9b2e69c51ca6676ee742443a89d14241bc80 [2022-11-26 00:25:36,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:25:36,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:25:36,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:25:36,514 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:25:36,514 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:25:36,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-11-26 00:25:39,623 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:25:39,963 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:25:39,964 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-11-26 00:25:39,985 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/data/f586ad209/4a16463d21a645a5870f6729de4db6e2/FLAGb8c2f7be8 [2022-11-26 00:25:40,003 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/data/f586ad209/4a16463d21a645a5870f6729de4db6e2 [2022-11-26 00:25:40,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:25:40,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:25:40,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:25:40,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:25:40,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:25:40,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:25:40" (1/1) ... [2022-11-26 00:25:40,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf0a1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:40, skipping insertion in model container [2022-11-26 00:25:40,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:25:40" (1/1) ... [2022-11-26 00:25:40,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:25:40,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:25:40,489 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:25:41,259 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:25:41,266 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:25:41,269 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:25:41,278 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:25:41,280 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:25:41,308 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:25:41,317 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:25:41,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:25:41,336 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:25:41,365 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:25:41,448 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:25:41,450 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:25:41,451 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:25:41,452 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:25:41,453 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:25:41,457 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:25:41,458 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:25:41,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:25:41,607 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:25:41,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41 WrapperNode [2022-11-26 00:25:41,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:25:41,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:25:41,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:25:41,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:25:41,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,665 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-11-26 00:25:41,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:25:41,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:25:41,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:25:41,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:25:41,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,694 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:25:41,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:25:41,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:25:41,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:25:41,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (1/1) ... [2022-11-26 00:25:41,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:25:41,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:25:41,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:25:41,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:25:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:25:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:25:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:25:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:25:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:25:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:25:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:25:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:25:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:25:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:25:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-26 00:25:41,957 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:25:41,964 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:25:42,157 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:25:42,171 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:25:42,171 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:25:42,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:25:42 BoogieIcfgContainer [2022-11-26 00:25:42,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:25:42,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:25:42,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:25:42,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:25:42,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:25:40" (1/3) ... [2022-11-26 00:25:42,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34066910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:25:42, skipping insertion in model container [2022-11-26 00:25:42,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:25:41" (2/3) ... [2022-11-26 00:25:42,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34066910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:25:42, skipping insertion in model container [2022-11-26 00:25:42,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:25:42" (3/3) ... [2022-11-26 00:25:42,190 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-11-26 00:25:42,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:25:42,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:25:42,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:25:42,261 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;@2bda960a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:25:42,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:25:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:25:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:25:42,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:25:42,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:25:42,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:25:42,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:25:42,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-11-26 00:25:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:25:42,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682994071] [2022-11-26 00:25:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:25:42,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:25:42,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:25:42,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:25:42,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:25:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:25:42,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:25:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:25:42,555 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 00:25:42,572 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:25:42,573 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:25:42,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:25:42,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:25:42,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:25:42,780 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:25:42,784 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:25:42,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:25:42 BoogieIcfgContainer [2022-11-26 00:25:42,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:25:42,815 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:25:42,815 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:25:42,815 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:25:42,816 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:25:42" (3/4) ... [2022-11-26 00:25:42,819 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:25:42,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:25:42,826 INFO L158 Benchmark]: Toolchain (without parser) took 2813.60ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 63.8MB in the beginning and 62.9MB in the end (delta: 925.1kB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2022-11-26 00:25:42,827 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 86.0MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:25:42,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1599.63ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 63.8MB in the beginning and 68.5MB in the end (delta: -4.7MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2022-11-26 00:25:42,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.72ms. Allocated memory is still 109.1MB. Free memory was 68.5MB in the beginning and 65.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:25:42,830 INFO L158 Benchmark]: Boogie Preprocessor took 33.87ms. Allocated memory is still 109.1MB. Free memory was 65.3MB in the beginning and 63.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:25:42,830 INFO L158 Benchmark]: RCFGBuilder took 472.80ms. Allocated memory is still 109.1MB. Free memory was 63.2MB in the beginning and 49.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:25:42,832 INFO L158 Benchmark]: TraceAbstraction took 630.58ms. Allocated memory is still 109.1MB. Free memory was 80.9MB in the beginning and 63.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-26 00:25:42,834 INFO L158 Benchmark]: Witness Printer took 5.15ms. Allocated memory is still 109.1MB. Free memory was 63.5MB in the beginning and 62.9MB in the end (delta: 632.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:25:42,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 86.0MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1599.63ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 63.8MB in the beginning and 68.5MB in the end (delta: -4.7MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.72ms. Allocated memory is still 109.1MB. Free memory was 68.5MB in the beginning and 65.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.87ms. Allocated memory is still 109.1MB. Free memory was 65.3MB in the beginning and 63.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 472.80ms. Allocated memory is still 109.1MB. Free memory was 63.2MB in the beginning and 49.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 630.58ms. Allocated memory is still 109.1MB. Free memory was 80.9MB in the beginning and 63.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.15ms. Allocated memory is still 109.1MB. Free memory was 63.5MB in the beginning and 62.9MB in the end (delta: 632.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] data - 1 VAL [data=-2147483648, data=-2147483648, dataCopy=-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: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:25:42,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1093edb-d420-4ade-b3e8-d339051da5a9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample