./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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 0f4b6cb66f44c03b39cb8a828719dfd55f406239a5a7c804e9d0078ffe53721a --- 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 [2022-11-25 23:43:05,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:43:05,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:43:05,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:43:05,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:43:05,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:43:05,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:43:05,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:43:05,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:43:05,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:43:05,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:43:05,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:43:05,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:43:05,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:43:05,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:43:05,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:43:05,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:43:05,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:43:05,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:43:05,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:43:05,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:43:05,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:43:05,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:43:05,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:43:05,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:43:05,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:43:05,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:43:05,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:43:05,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:43:05,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:43:05,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:43:06,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:43:06,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:43:06,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:43:06,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:43:06,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:43:06,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:43:06,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:43:06,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:43:06,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:43:06,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:43:06,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 23:43:06,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:43:06,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:43:06,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:43:06,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:43:06,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:43:06,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:43:06,058 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:43:06,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:43:06,063 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:43:06,063 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:43:06,064 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:43:06,065 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:43:06,065 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:43:06,065 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:43:06,065 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:43:06,065 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:43:06,066 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:43:06,066 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:43:06,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:43:06,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:43:06,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:43:06,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:43:06,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:43:06,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:43:06,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:43:06,068 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:43:06,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:43:06,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:43:06,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:43:06,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:43:06,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:43:06,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:43:06,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:43:06,070 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:43:06,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:43:06,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:43:06,071 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:43:06,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:43:06,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:43:06,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:43:06,072 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_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4b6cb66f44c03b39cb8a828719dfd55f406239a5a7c804e9d0078ffe53721a [2022-11-25 23:43:06,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:43:06,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:43:06,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:43:06,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:43:06,439 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:43:06,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-11-25 23:43:09,380 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:43:09,767 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:43:09,768 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-11-25 23:43:09,787 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/data/90d3e4950/60cf36159aa5429598001b771d7fe563/FLAGce1013b24 [2022-11-25 23:43:09,806 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/data/90d3e4950/60cf36159aa5429598001b771d7fe563 [2022-11-25 23:43:09,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:43:09,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:43:09,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:43:09,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:43:09,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:43:09,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:43:09" (1/1) ... [2022-11-25 23:43:09,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b683c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:09, skipping insertion in model container [2022-11-25 23:43:09,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:43:09" (1/1) ... [2022-11-25 23:43:09,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:43:09,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:43:10,314 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:43:10,837 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:43:10,846 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:43:10,849 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:43:10,852 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:43:10,853 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:43:10,876 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:43:10,882 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:43:10,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:43:10,911 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:43:10,945 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:43:11,006 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:43:11,009 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:43:11,010 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:43:11,021 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:43:11,024 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:43:11,032 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:43:11,033 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:43:11,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:43:11,164 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:43:11,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11 WrapperNode [2022-11-25 23:43:11,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:43:11,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:43:11,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:43:11,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:43:11,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,227 INFO L138 Inliner]: procedures = 503, calls = 65, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 60 [2022-11-25 23:43:11,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:43:11,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:43:11,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:43:11,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:43:11,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,267 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:43:11,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:43:11,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:43:11,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:43:11,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (1/1) ... [2022-11-25 23:43:11,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:43:11,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:43:11,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:43:11,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:43:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:43:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:43:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:43:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:43:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:43:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:43:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:43:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:43:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:43:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:43:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:43:11,490 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:43:11,492 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:43:11,713 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:43:11,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:43:11,748 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:43:11,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:43:11 BoogieIcfgContainer [2022-11-25 23:43:11,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:43:11,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:43:11,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:43:11,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:43:11,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:43:09" (1/3) ... [2022-11-25 23:43:11,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632739a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:43:11, skipping insertion in model container [2022-11-25 23:43:11,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:11" (2/3) ... [2022-11-25 23:43:11,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632739a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:43:11, skipping insertion in model container [2022-11-25 23:43:11,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:43:11" (3/3) ... [2022-11-25 23:43:11,759 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-11-25 23:43:11,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:43:11,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:43:11,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:43:11,832 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;@39e2edaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:43:11,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:43:11,837 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) [2022-11-25 23:43:11,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:43:11,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:43:11,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:43:11,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:43:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:43:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2079372692, now seen corresponding path program 1 times [2022-11-25 23:43:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:43:11,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331132897] [2022-11-25 23:43:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:43:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:43:12,030 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:43:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:43:12,129 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:43:12,131 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:43:12,132 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:43:12,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:43:12,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:43:12,143 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:43:12,156 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:43:12,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:43:12 BoogieIcfgContainer [2022-11-25 23:43:12,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:43:12,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:43:12,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:43:12,204 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:43:12,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:43:11" (3/4) ... [2022-11-25 23:43:12,207 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:43:12,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:43:12,210 INFO L158 Benchmark]: Toolchain (without parser) took 2395.80ms. Allocated memory is still 172.0MB. Free memory was 138.5MB in the beginning and 119.4MB in the end (delta: 19.1MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2022-11-25 23:43:12,210 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:12,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1345.54ms. Allocated memory is still 172.0MB. Free memory was 137.6MB in the beginning and 82.0MB in the end (delta: 55.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-11-25 23:43:12,212 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.90ms. Allocated memory is still 172.0MB. Free memory was 82.0MB in the beginning and 78.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:43:12,213 INFO L158 Benchmark]: Boogie Preprocessor took 42.61ms. Allocated memory is still 172.0MB. Free memory was 78.7MB in the beginning and 77.8MB in the end (delta: 891.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:12,219 INFO L158 Benchmark]: RCFGBuilder took 478.80ms. Allocated memory is still 172.0MB. Free memory was 77.8MB in the beginning and 138.2MB in the end (delta: -60.5MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2022-11-25 23:43:12,219 INFO L158 Benchmark]: TraceAbstraction took 448.47ms. Allocated memory is still 172.0MB. Free memory was 137.2MB in the beginning and 119.4MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 23:43:12,220 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 172.0MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:12,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1345.54ms. Allocated memory is still 172.0MB. Free memory was 137.6MB in the beginning and 82.0MB in the end (delta: 55.7MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.90ms. Allocated memory is still 172.0MB. Free memory was 82.0MB in the beginning and 78.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.61ms. Allocated memory is still 172.0MB. Free memory was 78.7MB in the beginning and 77.8MB in the end (delta: 891.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 478.80ms. Allocated memory is still 172.0MB. Free memory was 77.8MB in the beginning and 138.2MB in the end (delta: -60.5MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * TraceAbstraction took 448.47ms. Allocated memory is still 172.0MB. Free memory was 137.2MB in the beginning and 119.4MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 172.0MB. Free memory is still 119.4MB. 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: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741829:1073741827}, argv={1073741829:1073741827}, 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 CWE191_Integer_Underflow__int_fgets_postdec_53_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_53d_badSink(data) [L1587] data-- VAL [\old(data)=-2147483648, 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: 1587]: 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 [2022-11-25 23:43:12,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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 0f4b6cb66f44c03b39cb8a828719dfd55f406239a5a7c804e9d0078ffe53721a --- 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 [2022-11-25 23:43:14,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:43:14,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:43:14,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:43:14,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:43:14,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:43:14,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:43:14,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:43:14,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:43:14,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:43:14,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:43:14,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:43:14,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:43:14,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:43:14,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:43:14,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:43:14,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:43:14,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:43:14,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:43:14,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:43:14,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:43:14,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:43:14,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:43:14,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:43:14,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:43:14,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:43:14,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:43:14,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:43:14,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:43:14,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:43:14,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:43:14,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:43:14,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:43:14,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:43:14,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:43:14,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:43:14,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:43:14,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:43:14,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:43:14,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:43:14,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:43:14,927 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-25 23:43:14,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:43:14,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:43:14,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:43:14,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:43:14,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:43:14,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:43:14,971 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:43:14,971 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:43:14,971 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:43:14,971 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:43:14,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:43:14,973 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:43:14,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:43:14,974 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:43:14,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:43:14,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:43:14,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:43:14,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:43:14,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:43:14,975 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:43:14,975 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:43:14,975 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:43:14,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:43:14,975 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:43:14,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:43:14,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:43:14,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:43:14,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:43:14,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:43:14,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:43:14,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:43:14,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:43:14,978 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:43:14,978 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:43:14,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:43:14,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:43:14,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:43:14,987 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_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4b6cb66f44c03b39cb8a828719dfd55f406239a5a7c804e9d0078ffe53721a [2022-11-25 23:43:15,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:43:15,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:43:15,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:43:15,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:43:15,458 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:43:15,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-11-25 23:43:18,580 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:43:19,029 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:43:19,030 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-11-25 23:43:19,064 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/data/c7c533b5a/c91ea77efa6443eba196a36efe4f7710/FLAG4f4094ded [2022-11-25 23:43:19,082 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/data/c7c533b5a/c91ea77efa6443eba196a36efe4f7710 [2022-11-25 23:43:19,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:43:19,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:43:19,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:43:19,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:43:19,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:43:19,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:43:19" (1/1) ... [2022-11-25 23:43:19,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464220d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:19, skipping insertion in model container [2022-11-25 23:43:19,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:43:19" (1/1) ... [2022-11-25 23:43:19,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:43:19,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:43:19,712 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:43:20,477 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:43:20,484 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:43:20,486 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:43:20,495 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:43:20,496 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:43:20,529 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:43:20,534 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:43:20,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:43:20,561 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:43:20,595 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:43:20,678 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:43:20,682 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:43:20,685 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:43:20,687 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:43:20,691 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:43:20,694 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:43:20,702 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:43:20,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:43:20,865 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:43:20,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20 WrapperNode [2022-11-25 23:43:20,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:43:20,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:43:20,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:43:20,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:43:20,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:20,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:20,973 INFO L138 Inliner]: procedures = 508, calls = 65, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 59 [2022-11-25 23:43:20,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:43:20,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:43:20,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:43:20,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:43:20,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:20,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:20,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:20,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:21,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:21,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:21,025 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:21,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:21,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:43:21,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:43:21,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:43:21,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:43:21,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (1/1) ... [2022-11-25 23:43:21,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:43:21,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:43:21,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:43:21,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:43:21,126 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:43:21,127 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:43:21,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:43:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:43:21,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:43:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:43:21,128 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:43:21,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 23:43:21,340 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:43:21,342 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:43:21,525 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:43:21,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:43:21,532 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:43:21,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:43:21 BoogieIcfgContainer [2022-11-25 23:43:21,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:43:21,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:43:21,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:43:21,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:43:21,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:43:19" (1/3) ... [2022-11-25 23:43:21,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3247455a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:43:21, skipping insertion in model container [2022-11-25 23:43:21,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:43:20" (2/3) ... [2022-11-25 23:43:21,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3247455a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:43:21, skipping insertion in model container [2022-11-25 23:43:21,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:43:21" (3/3) ... [2022-11-25 23:43:21,542 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-11-25 23:43:21,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:43:21,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:43:21,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:43:21,629 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;@3c871119, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:43:21,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:43:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 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) [2022-11-25 23:43:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:43:21,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:43:21,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:43:21,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:43:21,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:43:21,647 INFO L85 PathProgramCache]: Analyzing trace with hash 290656206, now seen corresponding path program 1 times [2022-11-25 23:43:21,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:43:21,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315646480] [2022-11-25 23:43:21,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:21,663 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 [2022-11-25 23:43:21,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:43:21,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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) [2022-11-25 23:43:21,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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 [2022-11-25 23:43:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:43:21,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:43:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:43:21,977 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 23:43:21,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:43:21,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:43:21,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:43:22,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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 [2022-11-25 23:43:22,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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 [2022-11-25 23:43:22,195 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:43:22,199 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:43:22,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:43:22 BoogieIcfgContainer [2022-11-25 23:43:22,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:43:22,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:43:22,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:43:22,225 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:43:22,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:43:21" (3/4) ... [2022-11-25 23:43:22,229 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:43:22,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:43:22,230 INFO L158 Benchmark]: Toolchain (without parser) took 3140.98ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 47.6MB in the beginning and 53.7MB in the end (delta: -6.2MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-11-25 23:43:22,231 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:22,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1776.39ms. Allocated memory is still 73.4MB. Free memory was 47.4MB in the beginning and 33.1MB in the end (delta: 14.3MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2022-11-25 23:43:22,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.74ms. Allocated memory is still 73.4MB. Free memory was 33.1MB in the beginning and 29.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:43:22,232 INFO L158 Benchmark]: Boogie Preprocessor took 56.29ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 29.9MB in the beginning and 61.4MB in the end (delta: -31.5MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2022-11-25 23:43:22,233 INFO L158 Benchmark]: RCFGBuilder took 502.30ms. Allocated memory is still 88.1MB. Free memory was 61.4MB in the beginning and 47.3MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 23:43:22,233 INFO L158 Benchmark]: TraceAbstraction took 688.31ms. Allocated memory is still 88.1MB. Free memory was 46.3MB in the beginning and 54.2MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:22,234 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 88.1MB. Free memory was 54.2MB in the beginning and 53.7MB in the end (delta: 502.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:22,237 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 58.7MB. Free memory was 37.4MB in the beginning and 37.4MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1776.39ms. Allocated memory is still 73.4MB. Free memory was 47.4MB in the beginning and 33.1MB in the end (delta: 14.3MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.74ms. Allocated memory is still 73.4MB. Free memory was 33.1MB in the beginning and 29.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.29ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 29.9MB in the beginning and 61.4MB in the end (delta: -31.5MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * RCFGBuilder took 502.30ms. Allocated memory is still 88.1MB. Free memory was 61.4MB in the beginning and 47.3MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 688.31ms. Allocated memory is still 88.1MB. Free memory was 46.3MB in the beginning and 54.2MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 88.1MB. Free memory was 54.2MB in the beginning and 53.7MB in the end (delta: 502.2kB). 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: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_53_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_53d_badSink(data) [L1587] data-- VAL [\old(data)=-2147483648, 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: 1587]: 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, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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 [2022-11-25 23:43:22,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d62b7a-be0b-4d79-baa6-7d88d4be938f/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