./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 --- 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 03:07:32,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:07:32,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:07:32,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:07:32,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:07:32,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:07:32,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:07:32,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:07:32,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:07:32,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:07:32,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:07:32,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:07:32,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:07:32,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:07:32,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:07:32,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:07:32,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:07:32,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:07:32,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:07:32,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:07:32,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:07:32,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:07:32,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:07:32,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:07:32,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:07:32,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:07:32,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:07:32,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:07:32,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:07:32,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:07:32,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:07:32,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:07:32,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:07:32,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:07:32,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:07:32,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:07:32,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:07:32,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:07:32,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:07:32,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:07:32,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:07:32,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 03:07:32,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:07:32,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:07:32,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:07:32,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:07:32,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:07:32,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:07:32,388 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:07:32,388 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:07:32,388 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:07:32,388 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:07:32,388 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:07:32,388 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:07:32,389 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:07:32,389 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:07:32,389 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:07:32,389 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:07:32,389 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:07:32,389 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:07:32,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:07:32,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 03:07:32,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:07:32,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:07:32,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:07:32,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:07:32,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:07:32,390 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 03:07:32,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:07:32,391 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:07:32,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:07:32,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:07:32,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:07:32,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:07:32,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:07:32,391 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:07:32,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:07:32,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:07:32,392 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:07:32,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:07:32,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:07:32,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:07:32,392 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_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 [2022-12-14 03:07:32,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:07:32,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:07:32,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:07:32,572 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:07:32,573 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:07:32,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-14 03:07:35,098 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:07:35,348 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:07:35,349 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-14 03:07:35,370 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/data/bc59accd5/7ba7b8d8928a4e26bd3334e5229d30ad/FLAG9da9eeaf6 [2022-12-14 03:07:35,675 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/data/bc59accd5/7ba7b8d8928a4e26bd3334e5229d30ad [2022-12-14 03:07:35,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:07:35,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:07:35,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:07:35,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:07:35,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:07:35,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:07:35" (1/1) ... [2022-12-14 03:07:35,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140c8b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:35, skipping insertion in model container [2022-12-14 03:07:35,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:07:35" (1/1) ... [2022-12-14 03:07:35,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:07:35,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:07:36,019 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 03:07:36,347 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:07:36,351 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 03:07:36,353 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 03:07:36,354 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 03:07:36,355 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 03:07:36,372 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 03:07:36,374 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 03:07:36,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:07:36,384 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:07:36,397 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 03:07:36,429 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:07:36,430 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 03:07:36,431 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 03:07:36,433 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 03:07:36,433 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 03:07:36,437 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 03:07:36,438 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 03:07:36,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:07:36,540 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:07:36,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36 WrapperNode [2022-12-14 03:07:36,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:07:36,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:07:36,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:07:36,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:07:36,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,578 INFO L138 Inliner]: procedures = 501, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2022-12-14 03:07:36,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:07:36,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:07:36,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:07:36,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:07:36,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,594 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:07:36,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:07:36,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:07:36,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:07:36,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (1/1) ... [2022-12-14 03:07:36,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:07:36,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:36,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:07:36,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:07:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 03:07:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 03:07:36,653 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 03:07:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 03:07:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 03:07:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 03:07:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:07:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:07:36,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:07:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 03:07:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 03:07:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 03:07:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 03:07:36,759 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:07:36,760 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:07:36,863 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:07:36,886 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:07:36,886 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 03:07:36,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:07:36 BoogieIcfgContainer [2022-12-14 03:07:36,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:07:36,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:07:36,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:07:36,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:07:36,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:07:35" (1/3) ... [2022-12-14 03:07:36,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b31137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:07:36, skipping insertion in model container [2022-12-14 03:07:36,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:36" (2/3) ... [2022-12-14 03:07:36,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b31137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:07:36, skipping insertion in model container [2022-12-14 03:07:36,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:07:36" (3/3) ... [2022-12-14 03:07:36,894 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-14 03:07:36,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:07:36,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 03:07:36,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:07:36,945 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;@79780d5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:07:36,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 03:07:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 03:07:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 03:07:36,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:36,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:36,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 03:07:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:36,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1634006193, now seen corresponding path program 1 times [2022-12-14 03:07:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:07:36,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753901499] [2022-12-14 03:07:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:36,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 03:07:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:07:37,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 03:07:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:07:37,146 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 03:07:37,148 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 03:07:37,149 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 03:07:37,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 03:07:37,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 03:07:37,155 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 03:07:37,159 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 03:07:37,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:07:37 BoogieIcfgContainer [2022-12-14 03:07:37,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 03:07:37,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 03:07:37,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 03:07:37,183 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 03:07:37,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:07:36" (3/4) ... [2022-12-14 03:07:37,186 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 03:07:37,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 03:07:37,187 INFO L158 Benchmark]: Toolchain (without parser) took 1508.62ms. Allocated memory was 132.1MB in the beginning and 186.6MB in the end (delta: 54.5MB). Free memory was 94.2MB in the beginning and 91.2MB in the end (delta: 3.0MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2022-12-14 03:07:37,191 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 132.1MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:07:37,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 862.03ms. Allocated memory was 132.1MB in the beginning and 186.6MB in the end (delta: 54.5MB). Free memory was 94.2MB in the beginning and 130.1MB in the end (delta: -35.9MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. [2022-12-14 03:07:37,192 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.36ms. Allocated memory is still 186.6MB. Free memory was 130.1MB in the beginning and 127.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:07:37,192 INFO L158 Benchmark]: Boogie Preprocessor took 17.69ms. Allocated memory is still 186.6MB. Free memory was 127.2MB in the beginning and 126.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:07:37,193 INFO L158 Benchmark]: RCFGBuilder took 290.50ms. Allocated memory is still 186.6MB. Free memory was 126.0MB in the beginning and 110.4MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 03:07:37,193 INFO L158 Benchmark]: TraceAbstraction took 292.26ms. Allocated memory is still 186.6MB. Free memory was 109.2MB in the beginning and 91.5MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 03:07:37,194 INFO L158 Benchmark]: Witness Printer took 3.36ms. Allocated memory is still 186.6MB. Free memory was 91.5MB in the beginning and 91.2MB in the end (delta: 298.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:07:37,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 132.1MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 862.03ms. Allocated memory was 132.1MB in the beginning and 186.6MB in the end (delta: 54.5MB). Free memory was 94.2MB in the beginning and 130.1MB in the end (delta: -35.9MB). Peak memory consumption was 53.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.36ms. Allocated memory is still 186.6MB. Free memory was 130.1MB in the beginning and 127.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.69ms. Allocated memory is still 186.6MB. Free memory was 127.2MB in the beginning and 126.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 290.50ms. Allocated memory is still 186.6MB. Free memory was 126.0MB in the beginning and 110.4MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 292.26ms. Allocated memory is still 186.6MB. Free memory was 109.2MB in the beginning and 91.5MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.36ms. Allocated memory is still 186.6MB. Free memory was 91.5MB in the beginning and 91.2MB in the end (delta: 298.6kB). 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741832:1073741829}, argv={1073741832:1073741829}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] --data VAL [data=-2147483648, dataPtr={7:0}, dataPtr={7:0}, 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 03:07:37,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 --- 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 03:07:38,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:07:38,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:07:38,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:07:38,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:07:38,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:07:38,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:07:38,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:07:38,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:07:38,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:07:38,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:07:38,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:07:38,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:07:38,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:07:38,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:07:38,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:07:38,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:07:38,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:07:38,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:07:38,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:07:38,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:07:38,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:07:38,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:07:38,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:07:38,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:07:38,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:07:38,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:07:38,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:07:38,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:07:38,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:07:38,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:07:38,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:07:38,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:07:38,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:07:38,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:07:38,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:07:38,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:07:38,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:07:38,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:07:38,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:07:38,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:07:38,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 03:07:38,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:07:38,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:07:38,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:07:38,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:07:38,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:07:38,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:07:38,986 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:07:38,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:07:38,987 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:07:38,987 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:07:38,987 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:07:38,987 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:07:38,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:07:38,988 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 03:07:38,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:07:38,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:07:38,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:07:38,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:07:38,988 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 03:07:38,988 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 03:07:38,988 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 03:07:38,988 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 03:07:38,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:07:38,989 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:07:38,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:07:38,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:07:38,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 03:07:38,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:07:38,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:07:38,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:07:38,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:07:38,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:07:38,990 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 03:07:38,990 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 03:07:38,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:07:38,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:07:38,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 03:07:38,990 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_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ec8a5463484ce6681a16db041bd4e6c0f07ec517f293596fff7439151b39a98 [2022-12-14 03:07:39,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:07:39,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:07:39,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:07:39,252 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:07:39,252 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:07:39,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-14 03:07:41,770 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:07:41,991 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:07:41,992 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-14 03:07:42,005 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/data/4b7a38960/ae1e7022ab3a4121af55848b9cb2551c/FLAG527114659 [2022-12-14 03:07:42,016 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/data/4b7a38960/ae1e7022ab3a4121af55848b9cb2551c [2022-12-14 03:07:42,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:07:42,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:07:42,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:07:42,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:07:42,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:07:42,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@baea7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42, skipping insertion in model container [2022-12-14 03:07:42,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:07:42,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:07:42,349 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 03:07:42,722 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:07:42,726 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 03:07:42,727 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 03:07:42,729 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 03:07:42,729 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 03:07:42,743 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 03:07:42,745 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 03:07:42,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:07:42,759 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:07:42,772 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 03:07:42,805 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 03:07:42,806 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 03:07:42,807 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 03:07:42,808 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 03:07:42,809 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 03:07:42,811 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 03:07:42,812 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 03:07:42,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:07:42,916 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:07:42,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42 WrapperNode [2022-12-14 03:07:42,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:07:42,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:07:42,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:07:42,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:07:42,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,955 INFO L138 Inliner]: procedures = 506, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-12-14 03:07:42,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:07:42,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:07:42,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:07:42,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:07:42,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,973 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:07:42,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:07:42,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:07:42,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:07:42,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (1/1) ... [2022-12-14 03:07:42,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:07:42,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:07:43,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:07:43,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:07:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 03:07:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 03:07:43,028 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 03:07:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 03:07:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 03:07:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:07:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:07:43,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:07:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 03:07:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 03:07:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 03:07:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 03:07:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 03:07:43,153 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:07:43,155 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:07:43,295 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:07:43,299 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:07:43,299 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 03:07:43,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:07:43 BoogieIcfgContainer [2022-12-14 03:07:43,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:07:43,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:07:43,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:07:43,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:07:43,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:07:42" (1/3) ... [2022-12-14 03:07:43,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3344f69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:07:43, skipping insertion in model container [2022-12-14 03:07:43,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:07:42" (2/3) ... [2022-12-14 03:07:43,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3344f69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:07:43, skipping insertion in model container [2022-12-14 03:07:43,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:07:43" (3/3) ... [2022-12-14 03:07:43,307 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_63_bad.i [2022-12-14 03:07:43,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:07:43,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 03:07:43,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:07:43,358 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;@f2e3454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:07:43,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 03:07:43,361 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) [2022-12-14 03:07:43,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 03:07:43,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:07:43,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:07:43,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 03:07:43,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:07:43,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-14 03:07:43,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 03:07:43,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425516937] [2022-12-14 03:07:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:07:43,387 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 03:07:43,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 03:07:43,388 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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 03:07:43,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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 03:07:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:07:43,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 03:07:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 03:07:43,589 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 03:07:43,591 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 03:07:43,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 03:07:43,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 03:07:43,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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 03:07:43,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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 03:07:43,797 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 03:07:43,800 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 03:07:43,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:07:43 BoogieIcfgContainer [2022-12-14 03:07:43,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 03:07:43,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 03:07:43,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 03:07:43,817 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 03:07:43,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:07:43" (3/4) ... [2022-12-14 03:07:43,820 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 03:07:43,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 03:07:43,821 INFO L158 Benchmark]: Toolchain (without parser) took 1802.11ms. Allocated memory is still 73.4MB. Free memory was 48.6MB in the beginning and 32.0MB in the end (delta: 16.6MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2022-12-14 03:07:43,821 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory is still 28.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:07:43,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 897.26ms. Allocated memory is still 73.4MB. Free memory was 48.5MB in the beginning and 34.2MB in the end (delta: 14.2MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2022-12-14 03:07:43,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.64ms. Allocated memory is still 73.4MB. Free memory was 34.2MB in the beginning and 31.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 03:07:43,822 INFO L158 Benchmark]: Boogie Preprocessor took 23.22ms. Allocated memory is still 73.4MB. Free memory was 31.0MB in the beginning and 47.5MB in the end (delta: -16.4MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2022-12-14 03:07:43,823 INFO L158 Benchmark]: RCFGBuilder took 321.59ms. Allocated memory is still 73.4MB. Free memory was 47.5MB in the beginning and 32.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 03:07:43,823 INFO L158 Benchmark]: TraceAbstraction took 514.70ms. Allocated memory is still 73.4MB. Free memory was 31.6MB in the beginning and 32.4MB in the end (delta: -783.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:07:43,823 INFO L158 Benchmark]: Witness Printer took 3.00ms. Allocated memory is still 73.4MB. Free memory was 32.4MB in the beginning and 32.0MB in the end (delta: 386.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 03:07:43,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory is still 28.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 897.26ms. Allocated memory is still 73.4MB. Free memory was 48.5MB in the beginning and 34.2MB in the end (delta: 14.2MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.64ms. Allocated memory is still 73.4MB. Free memory was 34.2MB in the beginning and 31.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.22ms. Allocated memory is still 73.4MB. Free memory was 31.0MB in the beginning and 47.5MB in the end (delta: -16.4MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * RCFGBuilder took 321.59ms. Allocated memory is still 73.4MB. Free memory was 47.5MB in the beginning and 32.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 514.70ms. Allocated memory is still 73.4MB. Free memory was 31.6MB in the beginning and 32.4MB in the end (delta: -783.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.00ms. Allocated memory is still 73.4MB. Free memory was 32.4MB in the beginning and 32.0MB in the end (delta: 386.5kB). 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] --data VAL [data=-2147483648, dataPtr={15:0}, dataPtr={15:0}, 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: 1578]: 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 03:07:43,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ea2585c-0a52-4c1b-a35c-1ee837a70a21/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