./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:16:53,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:16:53,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:16:53,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:16:53,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:16:53,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:16:53,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:16:53,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:16:53,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:16:53,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:16:53,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:16:53,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:16:53,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:16:53,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:16:53,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:16:53,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:16:53,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:16:53,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:16:53,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:16:53,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:16:53,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:16:53,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:16:53,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:16:53,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:16:53,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:16:53,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:16:53,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:16:53,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:16:53,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:16:53,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:16:53,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:16:53,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:16:53,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:16:53,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:16:53,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:16:53,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:16:53,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:16:53,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:16:53,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:16:53,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:16:53,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:16:53,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 23:16:53,582 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:16:53,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:16:53,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:16:53,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:16:53,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:16:53,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:16:53,585 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:16:53,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:16:53,585 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:16:53,585 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:16:53,586 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:16:53,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:16:53,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:16:53,587 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:16:53,587 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:16:53,587 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:16:53,588 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:16:53,588 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:16:53,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:16:53,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:16:53,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:16:53,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:16:53,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:16:53,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:16:53,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:16:53,590 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:16:53,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:16:53,591 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:16:53,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:16:53,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:16:53,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:16:53,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:16:53,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:16:53,592 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:16:53,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:16:53,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:16:53,592 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:16:53,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:16:53,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:16:53,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:16:53,594 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_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 [2022-11-25 23:16:53,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:16:53,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:16:53,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:16:53,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:16:53,902 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:16:53,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-11-25 23:16:57,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:16:57,620 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:16:57,622 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-11-25 23:16:57,646 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/data/7cc97bc67/cf8b0c0b9a194cfcb3d7bc09b9132c01/FLAG5641f200f [2022-11-25 23:16:57,665 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/data/7cc97bc67/cf8b0c0b9a194cfcb3d7bc09b9132c01 [2022-11-25 23:16:57,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:16:57,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:16:57,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:16:57,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:16:57,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:16:57,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:16:57" (1/1) ... [2022-11-25 23:16:57,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce0d4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:57, skipping insertion in model container [2022-11-25 23:16:57,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:16:57" (1/1) ... [2022-11-25 23:16:57,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:16:57,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:16:58,134 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:16:58,675 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:16:58,684 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:16:58,687 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:16:58,698 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:16:58,699 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:16:58,732 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:16:58,742 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:16:58,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:16:58,763 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:16:58,796 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:16:58,866 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:16:58,868 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:16:58,875 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:16:58,877 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:16:58,879 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:16:58,884 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:16:58,886 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:16:58,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:16:59,059 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:16:59,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59 WrapperNode [2022-11-25 23:16:59,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:16:59,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:16:59,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:16:59,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:16:59,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,130 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-11-25 23:16:59,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:16:59,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:16:59,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:16:59,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:16:59,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:16:59,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:16:59,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:16:59,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:16:59,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (1/1) ... [2022-11-25 23:16:59,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:16:59,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:59,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:16:59,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:16:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:16:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:16:59,256 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:16:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:16:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:16:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:16:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:16:59,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:16:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:16:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:16:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:16:59,404 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:16:59,406 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:16:59,531 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:16:59,589 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:16:59,590 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:16:59,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:59 BoogieIcfgContainer [2022-11-25 23:16:59,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:16:59,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:16:59,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:16:59,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:16:59,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:16:57" (1/3) ... [2022-11-25 23:16:59,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0cc79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:16:59, skipping insertion in model container [2022-11-25 23:16:59,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:59" (2/3) ... [2022-11-25 23:16:59,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0cc79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:16:59, skipping insertion in model container [2022-11-25 23:16:59,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:59" (3/3) ... [2022-11-25 23:16:59,627 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-11-25 23:16:59,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:16:59,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:16:59,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:16:59,700 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;@744e1b10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:16:59,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:16:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:16:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:16:59,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:59,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:59,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:16:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1026845585, now seen corresponding path program 1 times [2022-11-25 23:16:59,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:59,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822607147] [2022-11-25 23:16:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:59,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:16:59,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:16:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:16:59,946 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:16:59,952 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:16:59,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:16:59,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:16:59,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:16:59,962 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:16:59,967 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:16:59,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:16:59 BoogieIcfgContainer [2022-11-25 23:16:59,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:16:59,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:16:59,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:16:59,994 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:16:59,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:59" (3/4) ... [2022-11-25 23:16:59,998 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:16:59,998 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:16:59,999 INFO L158 Benchmark]: Toolchain (without parser) took 2327.96ms. Allocated memory is still 159.4MB. Free memory was 112.3MB in the beginning and 84.2MB in the end (delta: 28.1MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2022-11-25 23:17:00,000 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:17:00,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1386.54ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 120.5MB in the end (delta: -8.6MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. [2022-11-25 23:17:00,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.56ms. Allocated memory is still 159.4MB. Free memory was 120.5MB in the beginning and 117.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:17:00,002 INFO L158 Benchmark]: Boogie Preprocessor took 37.08ms. Allocated memory is still 159.4MB. Free memory was 117.8MB in the beginning and 116.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:17:00,002 INFO L158 Benchmark]: RCFGBuilder took 423.37ms. Allocated memory is still 159.4MB. Free memory was 116.3MB in the beginning and 101.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:17:00,003 INFO L158 Benchmark]: TraceAbstraction took 384.30ms. Allocated memory is still 159.4MB. Free memory was 101.7MB in the beginning and 84.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 23:17:00,003 INFO L158 Benchmark]: Witness Printer took 4.36ms. Allocated memory is still 159.4MB. Free memory was 84.9MB in the beginning and 84.2MB in the end (delta: 672.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:17:00,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1386.54ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 120.5MB in the end (delta: -8.6MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.56ms. Allocated memory is still 159.4MB. Free memory was 120.5MB in the beginning and 117.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.08ms. Allocated memory is still 159.4MB. Free memory was 117.8MB in the beginning and 116.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 423.37ms. Allocated memory is still 159.4MB. Free memory was 116.3MB in the beginning and 101.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 384.30ms. Allocated memory is still 159.4MB. Free memory was 101.7MB in the beginning and 84.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.36ms. Allocated memory is still 159.4MB. Free memory was 84.9MB in the beginning and 84.2MB in the end (delta: 672.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1568]: 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); [L1575] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1575] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_18_bad() [L1550] int data; [L1551] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; 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] [L1568] data - 1 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 23:17:00,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:17:02,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:17:02,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:17:02,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:17:02,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:17:02,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:17:02,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:17:02,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:17:02,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:17:02,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:17:02,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:17:02,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:17:02,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:17:02,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:17:02,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:17:02,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:17:02,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:17:02,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:17:02,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:17:02,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:17:02,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:17:02,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:17:02,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:17:02,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:17:02,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:17:02,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:17:02,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:17:02,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:17:02,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:17:02,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:17:02,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:17:02,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:17:02,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:17:02,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:17:02,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:17:02,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:17:02,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:17:02,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:17:02,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:17:02,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:17:02,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:17:02,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-25 23:17:02,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:17:02,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:17:02,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:17:02,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:17:02,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:17:02,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:17:02,618 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:17:02,618 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:17:02,619 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:17:02,619 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:17:02,620 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:17:02,620 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:17:02,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:17:02,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:17:02,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:17:02,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:17:02,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:17:02,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:17:02,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:17:02,622 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:17:02,623 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:17:02,623 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:17:02,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:17:02,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:17:02,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:17:02,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:17:02,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:17:02,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:17:02,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:17:02,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:17:02,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:17:02,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:17:02,625 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:17:02,626 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:17:02,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:17:02,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:17:02,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:17:02,626 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_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 [2022-11-25 23:17:03,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:17:03,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:17:03,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:17:03,078 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:17:03,079 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:17:03,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-11-25 23:17:06,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:17:06,693 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:17:06,695 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-11-25 23:17:06,729 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/data/093af4ba8/865aea6acde742a0ab4ccf887d9afa19/FLAGc1d0eaf65 [2022-11-25 23:17:06,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/data/093af4ba8/865aea6acde742a0ab4ccf887d9afa19 [2022-11-25 23:17:06,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:17:06,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:17:06,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:17:06,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:17:06,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:17:06,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:17:06" (1/1) ... [2022-11-25 23:17:06,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c33af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:06, skipping insertion in model container [2022-11-25 23:17:06,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:17:06" (1/1) ... [2022-11-25 23:17:06,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:17:06,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:17:07,204 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:17:07,664 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:17:07,670 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:17:07,671 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:17:07,674 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:17:07,675 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:17:07,697 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:17:07,702 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:17:07,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:17:07,718 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:17:07,744 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:17:07,810 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:17:07,811 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:17:07,813 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:17:07,815 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:17:07,816 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:17:07,820 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:17:07,822 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:17:07,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:17:07,977 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:17:07,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07 WrapperNode [2022-11-25 23:17:07,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:17:07,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:17:07,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:17:07,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:17:07,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,064 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-25 23:17:08,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:17:08,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:17:08,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:17:08,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:17:08,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,103 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:17:08,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:17:08,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:17:08,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:17:08,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (1/1) ... [2022-11-25 23:17:08,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:17:08,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:17:08,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:17:08,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:17:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:17:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:17:08,206 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:17:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:17:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:17:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:17:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:17:08,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:17:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:17:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:17:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 23:17:08,421 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:17:08,444 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:17:08,687 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:17:08,693 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:17:08,693 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:17:08,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:17:08 BoogieIcfgContainer [2022-11-25 23:17:08,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:17:08,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:17:08,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:17:08,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:17:08,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:17:06" (1/3) ... [2022-11-25 23:17:08,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246e0f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:17:08, skipping insertion in model container [2022-11-25 23:17:08,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:17:07" (2/3) ... [2022-11-25 23:17:08,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246e0f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:17:08, skipping insertion in model container [2022-11-25 23:17:08,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:17:08" (3/3) ... [2022-11-25 23:17:08,718 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2022-11-25 23:17:08,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:17:08,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:17:08,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:17:08,804 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;@7493e6fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:17:08,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:17:08,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:17:08,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:17:08,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:17:08,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:17:08,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:17:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:17:08,828 INFO L85 PathProgramCache]: Analyzing trace with hash 924028237, now seen corresponding path program 1 times [2022-11-25 23:17:08,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:17:08,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934503978] [2022-11-25 23:17:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:17:08,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:17:08,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:17:08,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:17:08,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 23:17:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:17:09,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:17:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:17:09,104 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 23:17:09,106 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:17:09,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:17:09,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:17:09,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:17:09,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:17:09,323 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:17:09,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:17:09,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:17:09 BoogieIcfgContainer [2022-11-25 23:17:09,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:17:09,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:17:09,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:17:09,352 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:17:09,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:17:08" (3/4) ... [2022-11-25 23:17:09,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:17:09,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:17:09,366 INFO L158 Benchmark]: Toolchain (without parser) took 2610.73ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 30.4MB in the beginning and 31.9MB in the end (delta: -1.5MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2022-11-25 23:17:09,367 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 62.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:17:09,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1221.96ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 30.2MB in the beginning and 45.0MB in the end (delta: -14.8MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2022-11-25 23:17:09,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.24ms. Allocated memory is still 81.8MB. Free memory was 45.0MB in the beginning and 42.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:17:09,376 INFO L158 Benchmark]: Boogie Preprocessor took 54.28ms. Allocated memory is still 81.8MB. Free memory was 42.1MB in the beginning and 40.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:17:09,378 INFO L158 Benchmark]: RCFGBuilder took 574.20ms. Allocated memory is still 81.8MB. Free memory was 40.0MB in the beginning and 49.8MB in the end (delta: -9.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 23:17:09,378 INFO L158 Benchmark]: TraceAbstraction took 654.73ms. Allocated memory is still 81.8MB. Free memory was 49.4MB in the beginning and 32.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 23:17:09,379 INFO L158 Benchmark]: Witness Printer took 12.94ms. Allocated memory is still 81.8MB. Free memory was 32.6MB in the beginning and 31.9MB in the end (delta: 679.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:17:09,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 62.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1221.96ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 30.2MB in the beginning and 45.0MB in the end (delta: -14.8MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.24ms. Allocated memory is still 81.8MB. Free memory was 45.0MB in the beginning and 42.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.28ms. Allocated memory is still 81.8MB. Free memory was 42.1MB in the beginning and 40.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 574.20ms. Allocated memory is still 81.8MB. Free memory was 40.0MB in the beginning and 49.8MB in the end (delta: -9.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 654.73ms. Allocated memory is still 81.8MB. Free memory was 49.4MB in the beginning and 32.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 12.94ms. Allocated memory is still 81.8MB. Free memory was 32.6MB in the beginning and 31.9MB in the end (delta: 679.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1568]: 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] [L1575] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1575] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_18_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] [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] [L1568] data - 1 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 23:17:09,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d8a228-0361-49fd-be4d-eccdff166b57/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample