./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_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_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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_778474e9-3263-45e5-8404-da315872f7a7/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 da9c506dbd5a8a39c9dccf9393e01fc23287fe9cd5069388be080dbc228fa07d --- 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 10:29:38,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:29:38,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:29:38,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:29:38,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:29:38,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:29:38,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:29:38,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:29:38,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:29:38,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:29:38,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:29:38,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:29:38,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:29:38,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:29:38,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:29:38,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:29:38,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:29:38,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:29:38,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:29:38,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:29:38,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:29:38,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:29:38,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:29:38,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:29:38,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:29:38,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:29:38,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:29:38,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:29:38,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:29:38,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:29:38,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:29:38,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:29:38,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:29:38,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:29:38,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:29:38,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:29:38,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:29:38,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:29:38,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:29:38,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:29:38,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:29:38,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 10:29:38,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:29:38,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:29:38,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:29:38,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:29:38,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:29:38,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:29:38,473 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:29:38,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:29:38,473 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:29:38,474 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:29:38,474 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:29:38,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:29:38,474 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:29:38,474 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:29:38,475 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:29:38,475 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:29:38,475 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:29:38,475 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:29:38,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:29:38,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:29:38,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:29:38,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:29:38,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:29:38,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:29:38,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:29:38,477 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:29:38,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:29:38,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:29:38,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:29:38,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:29:38,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:29:38,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:29:38,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:29:38,478 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:29:38,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:29:38,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:29:38,478 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:29:38,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:29:38,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:29:38,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:29:38,479 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_778474e9-3263-45e5-8404-da315872f7a7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9c506dbd5a8a39c9dccf9393e01fc23287fe9cd5069388be080dbc228fa07d [2022-12-14 10:29:38,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:29:38,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:29:38,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:29:38,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:29:38,690 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:29:38,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-12-14 10:29:41,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:29:41,492 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:29:41,492 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-12-14 10:29:41,505 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/data/0e6073a62/ed640b7af913473e8a8f8be457d0d8a3/FLAGa011959a1 [2022-12-14 10:29:41,516 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/data/0e6073a62/ed640b7af913473e8a8f8be457d0d8a3 [2022-12-14 10:29:41,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:29:41,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:29:41,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:29:41,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:29:41,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:29:41,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:29:41" (1/1) ... [2022-12-14 10:29:41,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7351bdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:41, skipping insertion in model container [2022-12-14 10:29:41,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:29:41" (1/1) ... [2022-12-14 10:29:41,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:29:41,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:29:41,802 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:29:42,079 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:29:42,083 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:29:42,084 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:29:42,086 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:29:42,086 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:29:42,102 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:29:42,106 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:29:42,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:29:42,114 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:29:42,128 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:29:42,178 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:29:42,180 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:29:42,181 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:29:42,183 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:29:42,184 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:29:42,188 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:29:42,189 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:29:42,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:29:42,261 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:29:42,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42 WrapperNode [2022-12-14 10:29:42,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:29:42,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:29:42,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:29:42,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:29:42,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,308 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-14 10:29:42,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:29:42,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:29:42,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:29:42,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:29:42,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:29:42,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:29:42,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:29:42,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:29:42,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (1/1) ... [2022-12-14 10:29:42,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:29:42,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:29:42,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:29:42,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:29:42,396 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 10:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:29:42,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:29:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:29:42,511 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:29:42,513 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:29:42,623 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:29:42,646 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:29:42,646 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:29:42,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:29:42 BoogieIcfgContainer [2022-12-14 10:29:42,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:29:42,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:29:42,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:29:42,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:29:42,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:29:41" (1/3) ... [2022-12-14 10:29:42,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59173c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:29:42, skipping insertion in model container [2022-12-14 10:29:42,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:42" (2/3) ... [2022-12-14 10:29:42,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59173c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:29:42, skipping insertion in model container [2022-12-14 10:29:42,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:29:42" (3/3) ... [2022-12-14 10:29:42,656 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-12-14 10:29:42,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:29:42,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:29:42,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:29:42,711 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;@7cf469df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:29:42,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:29:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:29:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:29:42,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:29:42,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:29:42,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:29:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:29:42,726 INFO L85 PathProgramCache]: Analyzing trace with hash 845185258, now seen corresponding path program 1 times [2022-12-14 10:29:42,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:29:42,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275401082] [2022-12-14 10:29:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:29:42,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:29:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:29:42,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:29:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:29:42,862 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:29:42,864 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:29:42,865 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:29:42,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:29:42,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:29:42,870 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 10:29:42,874 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:29:42,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:29:42 BoogieIcfgContainer [2022-12-14 10:29:42,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:29:42,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:29:42,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:29:42,894 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:29:42,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:29:42" (3/4) ... [2022-12-14 10:29:42,897 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:29:42,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:29:42,899 INFO L158 Benchmark]: Toolchain (without parser) took 1379.18ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 87.1MB in the beginning and 99.9MB in the end (delta: -12.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-12-14 10:29:42,899 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:29:42,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 742.02ms. Allocated memory is still 127.9MB. Free memory was 87.1MB in the beginning and 61.1MB in the end (delta: 26.0MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2022-12-14 10:29:42,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.15ms. Allocated memory is still 127.9MB. Free memory was 61.1MB in the beginning and 58.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:29:42,901 INFO L158 Benchmark]: Boogie Preprocessor took 21.44ms. Allocated memory is still 127.9MB. Free memory was 58.3MB in the beginning and 56.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:29:42,902 INFO L158 Benchmark]: RCFGBuilder took 317.06ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 56.2MB in the beginning and 117.7MB in the end (delta: -61.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 10:29:42,902 INFO L158 Benchmark]: TraceAbstraction took 241.95ms. Allocated memory is still 155.2MB. Free memory was 116.7MB in the beginning and 99.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 10:29:42,902 INFO L158 Benchmark]: Witness Printer took 4.45ms. Allocated memory is still 155.2MB. Free memory is still 99.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:29:42,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 742.02ms. Allocated memory is still 127.9MB. Free memory was 87.1MB in the beginning and 61.1MB in the end (delta: 26.0MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.15ms. Allocated memory is still 127.9MB. Free memory was 61.1MB in the beginning and 58.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.44ms. Allocated memory is still 127.9MB. Free memory was 58.3MB in the beginning and 56.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.06ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 56.2MB in the beginning and 117.7MB in the end (delta: -61.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 241.95ms. Allocated memory is still 155.2MB. Free memory was 116.7MB in the beginning and 99.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.45ms. Allocated memory is still 155.2MB. Free memory is still 99.9MB. 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: 1569]: 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); [L1576] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1576] RET printLine("Calling bad()...") VAL [\old(argc)=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] [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_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=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE data < 0 VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] data * 2 VAL [data=-1073741825, 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: 1569]: 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:29:42,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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_778474e9-3263-45e5-8404-da315872f7a7/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 da9c506dbd5a8a39c9dccf9393e01fc23287fe9cd5069388be080dbc228fa07d --- 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 10:29:44,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:29:44,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:29:44,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:29:44,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:29:44,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:29:44,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:29:44,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:29:44,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:29:44,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:29:44,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:29:44,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:29:44,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:29:44,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:29:44,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:29:44,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:29:44,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:29:44,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:29:44,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:29:44,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:29:44,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:29:44,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:29:44,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:29:44,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:29:44,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:29:44,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:29:44,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:29:44,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:29:44,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:29:44,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:29:44,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:29:44,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:29:44,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:29:44,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:29:44,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:29:44,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:29:44,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:29:44,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:29:44,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:29:44,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:29:44,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:29:44,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 10:29:44,430 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:29:44,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:29:44,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:29:44,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:29:44,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:29:44,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:29:44,432 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:29:44,432 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:29:44,432 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:29:44,433 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:29:44,433 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:29:44,433 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:29:44,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:29:44,434 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:29:44,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:29:44,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:29:44,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:29:44,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:29:44,434 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:29:44,435 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:29:44,435 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:29:44,435 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:29:44,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:29:44,435 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:29:44,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:29:44,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:29:44,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:29:44,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:29:44,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:29:44,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:29:44,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:29:44,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:29:44,437 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:29:44,437 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:29:44,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:29:44,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:29:44,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:29:44,437 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_778474e9-3263-45e5-8404-da315872f7a7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9c506dbd5a8a39c9dccf9393e01fc23287fe9cd5069388be080dbc228fa07d [2022-12-14 10:29:44,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:29:44,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:29:44,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:29:44,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:29:44,664 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:29:44,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-12-14 10:29:47,194 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:29:47,446 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:29:47,446 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-12-14 10:29:47,460 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/data/602e27c0c/3544526da69e49de9deb3fc2ada92375/FLAG18846aaa4 [2022-12-14 10:29:47,752 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/data/602e27c0c/3544526da69e49de9deb3fc2ada92375 [2022-12-14 10:29:47,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:29:47,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:29:47,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:29:47,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:29:47,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:29:47,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:29:47" (1/1) ... [2022-12-14 10:29:47,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c78a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:47, skipping insertion in model container [2022-12-14 10:29:47,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:29:47" (1/1) ... [2022-12-14 10:29:47,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:29:47,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:29:48,033 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:29:48,385 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:29:48,389 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:29:48,390 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:29:48,392 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:29:48,392 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:29:48,411 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:29:48,416 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:29:48,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:29:48,431 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:29:48,449 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:29:48,495 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:29:48,496 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:29:48,497 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:29:48,499 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:29:48,500 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:29:48,504 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:29:48,506 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:29:48,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:29:48,605 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:29:48,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48 WrapperNode [2022-12-14 10:29:48,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:29:48,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:29:48,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:29:48,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:29:48,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,645 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 10:29:48,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:29:48,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:29:48,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:29:48,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:29:48,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:29:48,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:29:48,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:29:48,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:29:48,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (1/1) ... [2022-12-14 10:29:48,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:29:48,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:29:48,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:29:48,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:29:48,730 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:29:48,730 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:29:48,730 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:29:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:29:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:29:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:29:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:29:48,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:29:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:29:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:29:48,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 10:29:48,840 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:29:48,841 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:29:48,954 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:29:48,958 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:29:48,958 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:29:48,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:29:48 BoogieIcfgContainer [2022-12-14 10:29:48,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:29:48,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:29:48,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:29:48,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:29:48,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:29:47" (1/3) ... [2022-12-14 10:29:48,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bd3f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:29:48, skipping insertion in model container [2022-12-14 10:29:48,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:29:48" (2/3) ... [2022-12-14 10:29:48,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bd3f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:29:48, skipping insertion in model container [2022-12-14 10:29:48,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:29:48" (3/3) ... [2022-12-14 10:29:48,972 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_18_bad.i [2022-12-14 10:29:48,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:29:48,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:29:49,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:29:49,040 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;@47f10ec4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:29:49,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:29:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:29:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:29:49,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:29:49,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:29:49,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:29:49,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:29:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1672166730, now seen corresponding path program 1 times [2022-12-14 10:29:49,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:29:49,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53066066] [2022-12-14 10:29:49,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:29:49,067 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 10:29:49,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:29:49,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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 10:29:49,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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 10:29:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:29:49,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:29:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:29:49,255 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 10:29:49,257 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:29:49,258 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:29:49,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:29:49,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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 10:29:49,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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 10:29:49,473 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 10:29:49,485 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:29:49,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:29:49 BoogieIcfgContainer [2022-12-14 10:29:49,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:29:49,521 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:29:49,521 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:29:49,521 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:29:49,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:29:48" (3/4) ... [2022-12-14 10:29:49,524 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:29:49,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:29:49,524 INFO L158 Benchmark]: Toolchain (without parser) took 1769.21ms. Allocated memory is still 81.8MB. Free memory was 57.0MB in the beginning and 38.0MB in the end (delta: 19.0MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2022-12-14 10:29:49,525 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:29:49,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 849.63ms. Allocated memory is still 81.8MB. Free memory was 56.7MB in the beginning and 53.5MB in the end (delta: 3.2MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-12-14 10:29:49,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.51ms. Allocated memory is still 81.8MB. Free memory was 53.5MB in the beginning and 50.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:29:49,526 INFO L158 Benchmark]: Boogie Preprocessor took 22.54ms. Allocated memory is still 81.8MB. Free memory was 50.5MB in the beginning and 48.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:29:49,526 INFO L158 Benchmark]: RCFGBuilder took 291.08ms. Allocated memory is still 81.8MB. Free memory was 48.5MB in the beginning and 34.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:29:49,526 INFO L158 Benchmark]: TraceAbstraction took 558.99ms. Allocated memory is still 81.8MB. Free memory was 33.9MB in the beginning and 38.4MB in the end (delta: -4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:29:49,527 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 81.8MB. Free memory was 38.4MB in the beginning and 38.0MB in the end (delta: 414.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:29:49,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 849.63ms. Allocated memory is still 81.8MB. Free memory was 56.7MB in the beginning and 53.5MB in the end (delta: 3.2MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.51ms. Allocated memory is still 81.8MB. Free memory was 53.5MB in the beginning and 50.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.54ms. Allocated memory is still 81.8MB. Free memory was 50.5MB in the beginning and 48.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.08ms. Allocated memory is still 81.8MB. Free memory was 48.5MB in the beginning and 34.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 558.99ms. Allocated memory is still 81.8MB. Free memory was 33.9MB in the beginning and 38.4MB in the end (delta: -4.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 81.8MB. Free memory was 38.4MB in the beginning and 38.0MB in the end (delta: 414.6kB). 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: 1569]: 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] [L1576] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1576] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_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] [L1567] COND TRUE data < 0 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] [L1569] 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] - UnprovableResult [Line: 1569]: 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, 24 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=24occurred 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, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:29:49,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_778474e9-3263-45e5-8404-da315872f7a7/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