./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 436067b5a7e83a6a102ade1165753822668aa7a7dda33688650a66200c786699 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 16:15:55,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:15:55,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:15:55,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:15:55,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:15:55,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:15:55,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:15:55,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:15:55,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:15:55,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:15:55,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:15:55,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:15:55,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:15:55,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:15:55,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:15:55,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:15:55,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:15:55,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:15:55,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:15:55,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:15:55,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:15:55,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:15:55,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:15:55,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:15:55,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:15:55,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:15:55,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:15:55,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:15:55,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:15:55,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:15:55,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:15:55,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:15:55,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:15:55,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:15:55,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:15:55,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:15:55,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:15:55,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:15:55,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:15:55,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:15:55,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:15:55,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 16:15:55,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:15:55,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:15:55,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:15:55,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:15:55,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:15:55,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:15:55,524 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:15:55,524 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:15:55,524 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:15:55,524 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 16:15:55,524 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:15:55,525 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:15:55,525 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 16:15:55,525 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 16:15:55,525 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:15:55,525 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 16:15:55,525 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 16:15:55,525 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 16:15:55,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:15:55,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 16:15:55,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:15:55,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:15:55,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:15:55,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:15:55,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:15:55,527 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 16:15:55,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:15:55,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:15:55,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:15:55,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:15:55,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:15:55,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:15:55,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:15:55,529 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 16:15:55,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:15:55,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:15:55,529 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 16:15:55,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:15:55,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:15:55,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:15:55,530 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_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436067b5a7e83a6a102ade1165753822668aa7a7dda33688650a66200c786699 [2022-12-14 16:15:55,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:15:55,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:15:55,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:15:55,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:15:55,717 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:15:55,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-12-14 16:15:58,332 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:15:58,586 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:15:58,587 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-12-14 16:15:58,603 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/data/e7670bc79/06f094d3b1574becbb597e530c778cf2/FLAG01f4aa91b [2022-12-14 16:15:58,614 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/data/e7670bc79/06f094d3b1574becbb597e530c778cf2 [2022-12-14 16:15:58,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:15:58,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:15:58,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:15:58,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:15:58,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:15:58,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:15:58" (1/1) ... [2022-12-14 16:15:58,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cf1bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:58, skipping insertion in model container [2022-12-14 16:15:58,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:15:58" (1/1) ... [2022-12-14 16:15:58,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:15:58,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:15:58,935 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 16:15:59,234 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 16:15:59,239 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 16:15:59,241 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 16:15:59,244 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 16:15:59,244 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 16:15:59,262 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 16:15:59,267 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 16:15:59,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:15:59,277 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:15:59,294 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 16:15:59,343 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 16:15:59,345 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 16:15:59,346 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 16:15:59,349 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 16:15:59,350 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 16:15:59,354 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 16:15:59,356 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 16:15:59,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:15:59,474 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:15:59,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59 WrapperNode [2022-12-14 16:15:59,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:15:59,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:15:59,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:15:59,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:15:59,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,526 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-14 16:15:59,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:15:59,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:15:59,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:15:59,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:15:59,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,544 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:15:59,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:15:59,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:15:59,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:15:59,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (1/1) ... [2022-12-14 16:15:59,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:15:59,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:15:59,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:15:59,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:15:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 16:15:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 16:15:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 16:15:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 16:15:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 16:15:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:15:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:15:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:15:59,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 16:15:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 16:15:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:15:59,726 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:15:59,727 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:15:59,824 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:15:59,849 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:15:59,850 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 16:15:59,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:15:59 BoogieIcfgContainer [2022-12-14 16:15:59,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:15:59,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:15:59,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:15:59,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:15:59,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:15:58" (1/3) ... [2022-12-14 16:15:59,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12257d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:15:59, skipping insertion in model container [2022-12-14 16:15:59,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:15:59" (2/3) ... [2022-12-14 16:15:59,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12257d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:15:59, skipping insertion in model container [2022-12-14 16:15:59,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:15:59" (3/3) ... [2022-12-14 16:15:59,857 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-12-14 16:15:59,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:15:59,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 16:15:59,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:15:59,908 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;@77cb78b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:15:59,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 16:15:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 16:15:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 16:15:59,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:15:59,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:15:59,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 16:15:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:15:59,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1607565872, now seen corresponding path program 1 times [2022-12-14 16:15:59,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:15:59,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553099851] [2022-12-14 16:15:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:15:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:16:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:16:00,045 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 16:16:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:16:00,088 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 16:16:00,089 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 16:16:00,090 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 16:16:00,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 16:16:00,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 16:16:00,095 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 16:16:00,099 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 16:16:00,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:16:00 BoogieIcfgContainer [2022-12-14 16:16:00,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 16:16:00,116 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 16:16:00,116 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 16:16:00,116 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 16:16:00,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:15:59" (3/4) ... [2022-12-14 16:16:00,119 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 16:16:00,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 16:16:00,120 INFO L158 Benchmark]: Toolchain (without parser) took 1501.53ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 89.4MB in the beginning and 79.7MB in the end (delta: 9.7MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2022-12-14 16:16:00,120 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:16:00,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 856.17ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 89.0MB in the beginning and 115.3MB in the end (delta: -26.3MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2022-12-14 16:16:00,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.80ms. Allocated memory is still 165.7MB. Free memory was 115.3MB in the beginning and 113.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:16:00,121 INFO L158 Benchmark]: Boogie Preprocessor took 19.27ms. Allocated memory is still 165.7MB. Free memory was 112.9MB in the beginning and 111.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:16:00,122 INFO L158 Benchmark]: RCFGBuilder took 304.97ms. Allocated memory is still 165.7MB. Free memory was 111.1MB in the beginning and 97.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 16:16:00,122 INFO L158 Benchmark]: TraceAbstraction took 262.36ms. Allocated memory is still 165.7MB. Free memory was 96.4MB in the beginning and 79.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 16:16:00,122 INFO L158 Benchmark]: Witness Printer took 3.27ms. Allocated memory is still 165.7MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:16:00,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 856.17ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 89.0MB in the beginning and 115.3MB in the end (delta: -26.3MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.80ms. Allocated memory is still 165.7MB. Free memory was 115.3MB in the beginning and 113.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.27ms. Allocated memory is still 165.7MB. Free memory was 112.9MB in the beginning and 111.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.97ms. Allocated memory is still 165.7MB. Free memory was 111.1MB in the beginning and 97.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 262.36ms. Allocated memory is still 165.7MB. Free memory was 96.4MB in the beginning and 79.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.27ms. Allocated memory is still 165.7MB. Free memory is still 79.7MB. 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); [L1576] 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) [L1576] RET printLine("Calling bad()...") VAL [\old(argc)=1073741825, argc=1073741825, argv={1073741827:1073741826}, argv={1073741827:1073741826}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_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; [L1567] data-- VAL [data=-2147483648, 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: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 16:16:00,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 436067b5a7e83a6a102ade1165753822668aa7a7dda33688650a66200c786699 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 16:16:01,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:16:01,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:16:01,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:16:01,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:16:01,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:16:01,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:16:01,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:16:01,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:16:01,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:16:01,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:16:01,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:16:01,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:16:01,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:16:01,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:16:01,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:16:01,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:16:01,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:16:01,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:16:01,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:16:01,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:16:01,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:16:01,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:16:01,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:16:01,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:16:01,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:16:01,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:16:01,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:16:01,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:16:01,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:16:01,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:16:01,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:16:01,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:16:01,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:16:01,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:16:01,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:16:01,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:16:01,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:16:01,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:16:01,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:16:01,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:16:01,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 16:16:01,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:16:01,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:16:01,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:16:01,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:16:01,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:16:01,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:16:01,896 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:16:01,896 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:16:01,896 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:16:01,896 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:16:01,896 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:16:01,896 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:16:01,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:16:01,897 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 16:16:01,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:16:01,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:16:01,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:16:01,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:16:01,898 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 16:16:01,898 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 16:16:01,898 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 16:16:01,898 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 16:16:01,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:16:01,899 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:16:01,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:16:01,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:16:01,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 16:16:01,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:16:01,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:16:01,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:16:01,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:16:01,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:16:01,900 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 16:16:01,900 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 16:16:01,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:16:01,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:16:01,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 16:16:01,901 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_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436067b5a7e83a6a102ade1165753822668aa7a7dda33688650a66200c786699 [2022-12-14 16:16:02,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:16:02,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:16:02,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:16:02,132 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:16:02,132 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:16:02,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-12-14 16:16:04,722 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:16:04,953 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:16:04,953 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-12-14 16:16:04,967 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/data/559282648/ae61ee9a08434565bdb69c5a8a9a0750/FLAG65fe0f7a3 [2022-12-14 16:16:04,978 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/data/559282648/ae61ee9a08434565bdb69c5a8a9a0750 [2022-12-14 16:16:04,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:16:04,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:16:04,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:16:04,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:16:04,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:16:04,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:16:04" (1/1) ... [2022-12-14 16:16:04,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ccc4e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:04, skipping insertion in model container [2022-12-14 16:16:04,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:16:04" (1/1) ... [2022-12-14 16:16:04,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:16:05,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:16:05,295 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 16:16:05,608 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 16:16:05,612 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 16:16:05,613 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 16:16:05,615 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 16:16:05,616 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 16:16:05,633 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 16:16:05,638 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 16:16:05,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:16:05,665 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:16:05,684 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 16:16:05,736 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 16:16:05,737 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 16:16:05,738 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 16:16:05,741 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 16:16:05,741 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 16:16:05,745 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 16:16:05,747 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 16:16:05,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:16:05,860 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:16:05,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05 WrapperNode [2022-12-14 16:16:05,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:16:05,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:16:05,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:16:05,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:16:05,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,902 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 16:16:05,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:16:05,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:16:05,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:16:05,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:16:05,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:16:05,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:16:05,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:16:05,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:16:05,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (1/1) ... [2022-12-14 16:16:05,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:16:05,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:16:05,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:16:05,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:16:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 16:16:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 16:16:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 16:16:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 16:16:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 16:16:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:16:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:16:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:16:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 16:16:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 16:16:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 16:16:06,104 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:16:06,106 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:16:06,231 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:16:06,237 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:16:06,237 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 16:16:06,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:16:06 BoogieIcfgContainer [2022-12-14 16:16:06,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:16:06,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:16:06,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:16:06,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:16:06,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:16:04" (1/3) ... [2022-12-14 16:16:06,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebe0a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:16:06, skipping insertion in model container [2022-12-14 16:16:06,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:16:05" (2/3) ... [2022-12-14 16:16:06,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebe0a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:16:06, skipping insertion in model container [2022-12-14 16:16:06,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:16:06" (3/3) ... [2022-12-14 16:16:06,246 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-12-14 16:16:06,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:16:06,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 16:16:06,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:16:06,309 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;@3593596e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:16:06,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 16:16:06,313 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) [2022-12-14 16:16:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 16:16:06,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:16:06,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 16:16:06,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 16:16:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:16:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-12-14 16:16:06,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 16:16:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037975669] [2022-12-14 16:16:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:16:06,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 16:16:06,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 16:16:06,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 16:16:06,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 16:16:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:16:06,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 16:16:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:16:06,496 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 16:16:06,498 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 16:16:06,498 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 16:16:06,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 16:16:06,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 16:16:06,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 16:16:06,713 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 16:16:06,726 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 16:16:06,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 04:16:06 BoogieIcfgContainer [2022-12-14 16:16:06,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 16:16:06,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 16:16:06,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 16:16:06,787 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 16:16:06,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:16:06" (3/4) ... [2022-12-14 16:16:06,796 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 16:16:06,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 16:16:06,800 INFO L158 Benchmark]: Toolchain (without parser) took 1817.39ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 45.8MB in the end (delta: 23.1MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2022-12-14 16:16:06,801 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:16:06,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 878.80ms. Allocated memory is still 94.4MB. Free memory was 68.7MB in the beginning and 55.5MB in the end (delta: 13.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-12-14 16:16:06,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.03ms. Allocated memory is still 94.4MB. Free memory was 55.5MB in the beginning and 52.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:16:06,805 INFO L158 Benchmark]: Boogie Preprocessor took 21.72ms. Allocated memory is still 94.4MB. Free memory was 52.2MB in the beginning and 50.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:16:06,806 INFO L158 Benchmark]: RCFGBuilder took 312.73ms. Allocated memory is still 94.4MB. Free memory was 50.4MB in the beginning and 64.1MB in the end (delta: -13.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2022-12-14 16:16:06,808 INFO L158 Benchmark]: TraceAbstraction took 544.43ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 46.3MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 16:16:06,809 INFO L158 Benchmark]: Witness Printer took 10.62ms. Allocated memory is still 94.4MB. Free memory was 46.3MB in the beginning and 45.8MB in the end (delta: 533.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:16:06,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 878.80ms. Allocated memory is still 94.4MB. Free memory was 68.7MB in the beginning and 55.5MB in the end (delta: 13.2MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.03ms. Allocated memory is still 94.4MB. Free memory was 55.5MB in the beginning and 52.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.72ms. Allocated memory is still 94.4MB. Free memory was 52.2MB in the beginning and 50.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 312.73ms. Allocated memory is still 94.4MB. Free memory was 50.4MB in the beginning and 64.1MB in the end (delta: -13.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * TraceAbstraction took 544.43ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 46.3MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 10.62ms. Allocated memory is still 94.4MB. Free memory was 46.3MB in the beginning and 45.8MB in the end (delta: 533.9kB). 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); VAL [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 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) [L1576] 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] [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_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; [L1567] data-- VAL [data=-2147483648, 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 16:16:06,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_337c0a8c-405f-403c-9918-728fb6869b11/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample