./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_12_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 e73bf75f10180290498e6c1b39666c57ea963b55df36220002e3474ff808070b --- 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 13:47:06,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:47:06,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:47:06,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:47:06,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:47:06,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:47:06,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:47:06,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:47:06,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:47:06,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:47:06,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:47:06,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:47:06,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:47:06,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:47:06,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:47:06,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:47:06,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:47:06,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:47:06,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:47:06,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:47:06,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:47:06,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:47:06,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:47:06,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:47:06,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:47:06,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:47:06,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:47:06,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:47:06,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:47:06,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:47:06,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:47:06,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:47:06,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:47:06,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:47:06,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:47:06,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:47:06,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:47:06,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:47:06,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:47:06,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:47:06,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:47:06,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 13:47:06,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:47:06,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:47:06,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:47:06,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:47:06,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:47:06,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:47:06,506 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:47:06,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:47:06,507 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:47:06,507 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:47:06,507 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:47:06,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:47:06,507 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:47:06,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:47:06,507 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:47:06,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:47:06,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:47:06,508 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:47:06,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:47:06,508 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:47:06,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:47:06,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:47:06,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:47:06,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:47:06,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:47:06,509 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 13:47:06,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:47:06,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:47:06,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:47:06,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:47:06,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:47:06,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:47:06,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:47:06,510 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:47:06,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:47:06,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:47:06,510 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:47:06,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:47:06,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:47:06,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:47:06,511 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_28e4023f-d6a3-4617-82e4-a249d67d84d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e73bf75f10180290498e6c1b39666c57ea963b55df36220002e3474ff808070b [2022-12-14 13:47:06,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:47:06,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:47:06,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:47:06,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:47:06,704 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:47:06,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_12_bad.i [2022-12-14 13:47:09,327 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:47:09,582 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:47:09,582 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_12_bad.i [2022-12-14 13:47:09,599 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/data/b13eb3cef/f6be36e8ea584ffab078bd838eb50384/FLAG68bf8ab46 [2022-12-14 13:47:09,610 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/data/b13eb3cef/f6be36e8ea584ffab078bd838eb50384 [2022-12-14 13:47:09,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:47:09,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:47:09,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:47:09,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:47:09,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:47:09,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:47:09" (1/1) ... [2022-12-14 13:47:09,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e4fa0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:09, skipping insertion in model container [2022-12-14 13:47:09,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:47:09" (1/1) ... [2022-12-14 13:47:09,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:47:09,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:47:09,934 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 13:47:10,241 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:47:10,246 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:47:10,248 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:47:10,251 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:47:10,252 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:47:10,269 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 13:47:10,275 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 13:47:10,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:47:10,287 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:47:10,305 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 13:47:10,360 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:47:10,362 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:47:10,363 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:47:10,365 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:47:10,366 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:47:10,370 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 13:47:10,373 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 13:47:10,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:47:10,450 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:47:10,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10 WrapperNode [2022-12-14 13:47:10,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:47:10,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:47:10,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:47:10,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:47:10,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,487 INFO L138 Inliner]: procedures = 500, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2022-12-14 13:47:10,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:47:10,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:47:10,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:47:10,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:47:10,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,502 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:47:10,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:47:10,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:47:10,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:47:10,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (1/1) ... [2022-12-14 13:47:10,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:47:10,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:47:10,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:47:10,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:47:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-12-14 13:47:10,560 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-12-14 13:47:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 13:47:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2022-12-14 13:47:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2022-12-14 13:47:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 13:47:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 13:47:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:47:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 13:47:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:47:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:47:10,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:47:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:47:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 13:47:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:47:10,674 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:47:10,676 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:47:10,805 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:47:10,835 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:47:10,835 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:47:10,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:47:10 BoogieIcfgContainer [2022-12-14 13:47:10,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:47:10,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:47:10,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:47:10,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:47:10,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:47:09" (1/3) ... [2022-12-14 13:47:10,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bf8918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:47:10, skipping insertion in model container [2022-12-14 13:47:10,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:10" (2/3) ... [2022-12-14 13:47:10,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bf8918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:47:10, skipping insertion in model container [2022-12-14 13:47:10,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:47:10" (3/3) ... [2022-12-14 13:47:10,847 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_12_bad.i [2022-12-14 13:47:10,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:47:10,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 13:47:10,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:47:10,911 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;@590e57a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:47:10,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 13:47:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 25 states have internal predecessors, (26), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 13:47:10,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 13:47:10,920 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:10,920 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:10,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:47:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:10,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1158545232, now seen corresponding path program 1 times [2022-12-14 13:47:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:10,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176620569] [2022-12-14 13:47:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:47:11,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:11,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176620569] [2022-12-14 13:47:11,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176620569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:47:11,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:47:11,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:47:11,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951622644] [2022-12-14 13:47:11,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:47:11,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:47:11,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:11,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:47:11,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:11,180 INFO L87 Difference]: Start difference. First operand has 34 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 25 states have internal predecessors, (26), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:47:11,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:11,238 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2022-12-14 13:47:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:47:11,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2022-12-14 13:47:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:11,244 INFO L225 Difference]: With dead ends: 52 [2022-12-14 13:47:11,244 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 13:47:11,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:11,248 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:11,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:47:11,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 13:47:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-12-14 13:47:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 13:47:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-12-14 13:47:11,274 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 16 [2022-12-14 13:47:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:11,275 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-12-14 13:47:11,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:47:11,275 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-12-14 13:47:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 13:47:11,276 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:11,276 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:11,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:47:11,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:47:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1555163895, now seen corresponding path program 1 times [2022-12-14 13:47:11,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:11,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285049698] [2022-12-14 13:47:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:11,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:47:11,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:11,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285049698] [2022-12-14 13:47:11,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285049698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:47:11,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:47:11,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:47:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039640765] [2022-12-14 13:47:11,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:47:11,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:47:11,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:47:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:11,358 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:47:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:11,385 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-12-14 13:47:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:47:11,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2022-12-14 13:47:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:11,386 INFO L225 Difference]: With dead ends: 42 [2022-12-14 13:47:11,386 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 13:47:11,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:11,387 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:11,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:47:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 13:47:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-14 13:47:11,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 13:47:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-12-14 13:47:11,392 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 17 [2022-12-14 13:47:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:11,392 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-12-14 13:47:11,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:47:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-12-14 13:47:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 13:47:11,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:11,393 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:11,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:47:11,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:47:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -668541365, now seen corresponding path program 1 times [2022-12-14 13:47:11,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:11,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076954367] [2022-12-14 13:47:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:11,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:47:11,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:47:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:47:11,447 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:47:11,448 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:47:11,448 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 13:47:11,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 13:47:11,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 13:47:11,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 13:47:11,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:47:11,453 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 13:47:11,456 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:47:11,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:47:11 BoogieIcfgContainer [2022-12-14 13:47:11,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:47:11,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:47:11,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:47:11,476 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:47:11,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:47:10" (3/4) ... [2022-12-14 13:47:11,479 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 13:47:11,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:47:11,479 INFO L158 Benchmark]: Toolchain (without parser) took 1865.27ms. Allocated memory is still 167.8MB. Free memory was 117.9MB in the beginning and 95.6MB in the end (delta: 22.2MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-12-14 13:47:11,480 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory was 90.2MB in the beginning and 90.1MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:47:11,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 835.24ms. Allocated memory is still 167.8MB. Free memory was 117.9MB in the beginning and 96.4MB in the end (delta: 21.4MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2022-12-14 13:47:11,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.78ms. Allocated memory is still 167.8MB. Free memory was 96.4MB in the beginning and 93.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:47:11,481 INFO L158 Benchmark]: Boogie Preprocessor took 17.46ms. Allocated memory is still 167.8MB. Free memory was 93.5MB in the beginning and 92.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:47:11,481 INFO L158 Benchmark]: RCFGBuilder took 332.74ms. Allocated memory is still 167.8MB. Free memory was 92.2MB in the beginning and 75.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 13:47:11,482 INFO L158 Benchmark]: TraceAbstraction took 634.58ms. Allocated memory is still 167.8MB. Free memory was 75.4MB in the beginning and 95.6MB in the end (delta: -20.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:47:11,482 INFO L158 Benchmark]: Witness Printer took 3.20ms. Allocated memory is still 167.8MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:47:11,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory was 90.2MB in the beginning and 90.1MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 835.24ms. Allocated memory is still 167.8MB. Free memory was 117.9MB in the beginning and 96.4MB in the end (delta: 21.4MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.78ms. Allocated memory is still 167.8MB. Free memory was 96.4MB in the beginning and 93.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.46ms. Allocated memory is still 167.8MB. Free memory was 93.5MB in the beginning and 92.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 332.74ms. Allocated memory is still 167.8MB. Free memory was 92.2MB in the beginning and 75.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 634.58ms. Allocated memory is still 167.8MB. Free memory was 75.4MB in the beginning and 95.6MB in the end (delta: -20.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.20ms. Allocated memory is still 167.8MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1595] 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={5:0}] [L1414] COND TRUE line != ((void *)0) [L1595] 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] [L1596] CALL CWE191_Integer_Underflow__int_fgets_predec_12_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1552] COND TRUE globalReturnsTrueOrFalse() [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1573] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1582]: 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 4 procedures, 34 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 71 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 67 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 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 13:47:11,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 e73bf75f10180290498e6c1b39666c57ea963b55df36220002e3474ff808070b --- 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 13:47:12,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:47:12,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:47:13,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:47:13,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:47:13,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:47:13,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:47:13,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:47:13,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:47:13,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:47:13,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:47:13,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:47:13,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:47:13,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:47:13,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:47:13,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:47:13,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:47:13,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:47:13,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:47:13,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:47:13,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:47:13,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:47:13,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:47:13,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:47:13,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:47:13,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:47:13,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:47:13,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:47:13,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:47:13,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:47:13,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:47:13,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:47:13,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:47:13,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:47:13,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:47:13,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:47:13,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:47:13,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:47:13,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:47:13,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:47:13,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:47:13,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 13:47:13,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:47:13,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:47:13,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:47:13,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:47:13,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:47:13,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:47:13,080 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:47:13,080 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:47:13,080 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:47:13,080 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:47:13,080 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:47:13,081 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:47:13,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:47:13,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:47:13,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:47:13,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:47:13,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:47:13,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:47:13,082 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 13:47:13,083 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 13:47:13,083 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 13:47:13,083 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 13:47:13,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:47:13,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:47:13,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:47:13,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:47:13,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 13:47:13,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:47:13,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:47:13,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:47:13,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:47:13,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:47:13,085 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 13:47:13,085 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 13:47:13,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:47:13,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:47:13,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 13:47:13,086 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_28e4023f-d6a3-4617-82e4-a249d67d84d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e73bf75f10180290498e6c1b39666c57ea963b55df36220002e3474ff808070b [2022-12-14 13:47:13,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:47:13,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:47:13,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:47:13,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:47:13,304 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:47:13,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_12_bad.i [2022-12-14 13:47:15,873 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:47:16,139 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:47:16,139 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_12_bad.i [2022-12-14 13:47:16,159 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/data/5bd46807e/7ce3dfdf56bc4093b379a2a3779ff21d/FLAG575a04127 [2022-12-14 13:47:16,173 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/data/5bd46807e/7ce3dfdf56bc4093b379a2a3779ff21d [2022-12-14 13:47:16,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:47:16,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:47:16,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:47:16,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:47:16,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:47:16,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:16,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3532637b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16, skipping insertion in model container [2022-12-14 13:47:16,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:16,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:47:16,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:47:16,499 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 13:47:16,793 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:47:16,797 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:47:16,798 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:47:16,800 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:47:16,801 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:47:16,815 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 13:47:16,820 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 13:47:16,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:47:16,831 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:47:16,845 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 13:47:16,881 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 13:47:16,882 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:47:16,883 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 13:47:16,884 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:47:16,885 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 13:47:16,888 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 13:47:16,890 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 13:47:16,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:47:16,967 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:47:16,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16 WrapperNode [2022-12-14 13:47:16,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:47:16,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:47:16,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:47:16,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:47:16,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:16,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,008 INFO L138 Inliner]: procedures = 505, calls = 67, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-12-14 13:47:17,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:47:17,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:47:17,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:47:17,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:47:17,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,027 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:47:17,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:47:17,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:47:17,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:47:17,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (1/1) ... [2022-12-14 13:47:17,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:47:17,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:47:17,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:47:17,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:47:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2022-12-14 13:47:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2022-12-14 13:47:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 13:47:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2022-12-14 13:47:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2022-12-14 13:47:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 13:47:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 13:47:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:47:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 13:47:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:47:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:47:17,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:47:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:47:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 13:47:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 13:47:17,191 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:47:17,192 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:47:17,330 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:47:17,335 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:47:17,335 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:47:17,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:47:17 BoogieIcfgContainer [2022-12-14 13:47:17,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:47:17,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:47:17,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:47:17,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:47:17,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:47:16" (1/3) ... [2022-12-14 13:47:17,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f1463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:47:17, skipping insertion in model container [2022-12-14 13:47:17,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:16" (2/3) ... [2022-12-14 13:47:17,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f1463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:47:17, skipping insertion in model container [2022-12-14 13:47:17,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:47:17" (3/3) ... [2022-12-14 13:47:17,342 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_12_bad.i [2022-12-14 13:47:17,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:47:17,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 13:47:17,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:47:17,394 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;@4a80bcf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:47:17,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 13:47:17,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 23 states have (on average 1.391304347826087) internal successors, (32), 30 states have internal predecessors, (32), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 13:47:17,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 13:47:17,402 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:17,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:17,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:47:17,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash 412580387, now seen corresponding path program 1 times [2022-12-14 13:47:17,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:47:17,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836530449] [2022-12-14 13:47:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:17,416 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 13:47:17,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:47:17,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 13:47:17,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 13:47:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:17,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:47:17,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:47:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 13:47:17,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:47:17,609 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:47:17,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836530449] [2022-12-14 13:47:17,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836530449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:47:17,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:47:17,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:47:17,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864444593] [2022-12-14 13:47:17,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:47:17,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:47:17,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:47:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:47:17,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:17,638 INFO L87 Difference]: Start difference. First operand has 39 states, 23 states have (on average 1.391304347826087) internal successors, (32), 30 states have internal predecessors, (32), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:47:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:17,684 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2022-12-14 13:47:17,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:47:17,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-12-14 13:47:17,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:17,691 INFO L225 Difference]: With dead ends: 59 [2022-12-14 13:47:17,691 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 13:47:17,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:17,695 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:17,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:47:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 13:47:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 13:47:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 13:47:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-14 13:47:17,725 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2022-12-14 13:47:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:17,726 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-14 13:47:17,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 13:47:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-14 13:47:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 13:47:17,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:17,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:47:17,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 13:47:17,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 13:47:17,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 13:47:17,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash 752766654, now seen corresponding path program 1 times [2022-12-14 13:47:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:47:17,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841501646] [2022-12-14 13:47:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:17,930 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 13:47:17,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:47:17,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 13:47:17,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 (3)] Waiting until timeout for monitored process [2022-12-14 13:47:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:47:18,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:47:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:47:18,112 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 13:47:18,112 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:47:18,114 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-14 13:47:18,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-14 13:47:18,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-14 13:47:18,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-14 13:47:18,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 (3)] Ended with exit code 0 [2022-12-14 13:47:18,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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 13:47:18,326 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 13:47:18,336 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:47:18,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:47:18 BoogieIcfgContainer [2022-12-14 13:47:18,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:47:18,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:47:18,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:47:18,403 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:47:18,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:47:17" (3/4) ... [2022-12-14 13:47:18,407 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 13:47:18,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:47:18,408 INFO L158 Benchmark]: Toolchain (without parser) took 2231.03ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 42.3MB in the beginning and 48.8MB in the end (delta: -6.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 13:47:18,409 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 67.1MB. Free memory was 45.6MB in the beginning and 45.6MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:47:18,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 789.66ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 42.1MB in the beginning and 40.6MB in the end (delta: 1.5MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-12-14 13:47:18,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.62ms. Allocated memory is still 90.2MB. Free memory was 40.6MB in the beginning and 63.8MB in the end (delta: -23.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-12-14 13:47:18,410 INFO L158 Benchmark]: Boogie Preprocessor took 21.19ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:47:18,411 INFO L158 Benchmark]: RCFGBuilder took 305.51ms. Allocated memory is still 90.2MB. Free memory was 61.7MB in the beginning and 46.1MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 13:47:18,411 INFO L158 Benchmark]: TraceAbstraction took 1064.32ms. Allocated memory is still 90.2MB. Free memory was 45.6MB in the beginning and 49.3MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:47:18,412 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 90.2MB. Free memory was 49.3MB in the beginning and 48.8MB in the end (delta: 511.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:47:18,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 67.1MB. Free memory was 45.6MB in the beginning and 45.6MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 789.66ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 42.1MB in the beginning and 40.6MB in the end (delta: 1.5MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.62ms. Allocated memory is still 90.2MB. Free memory was 40.6MB in the beginning and 63.8MB in the end (delta: -23.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.19ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 305.51ms. Allocated memory is still 90.2MB. Free memory was 61.7MB in the beginning and 46.1MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1064.32ms. Allocated memory is still 90.2MB. Free memory was 45.6MB in the beginning and 49.3MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 90.2MB. Free memory was 49.3MB in the beginning and 48.8MB in the end (delta: 511.2kB). 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1595] 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={5:0}] [L1414] COND TRUE line != ((void *)0) [L1595] 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] [L1596] CALL CWE191_Integer_Underflow__int_fgets_predec_12_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1552] COND TRUE globalReturnsTrueOrFalse() [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalReturnsTrueOrFalse()=1, globalTrue=1] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1573] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1582]: 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 4 procedures, 39 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 49 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 3/3 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 13:47:18,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28e4023f-d6a3-4617-82e4-a249d67d84d6/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