./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_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_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 --- 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 [2022-12-13 21:03:06,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:03:06,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:03:06,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:03:06,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:03:06,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:03:06,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:03:06,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:03:06,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:03:06,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:03:06,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:03:06,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:03:06,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:03:06,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:03:06,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:03:06,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:03:06,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:03:06,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:03:06,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:03:06,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:03:06,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:03:06,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:03:06,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:03:06,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:03:06,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:03:06,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:03:06,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:03:06,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:03:06,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:03:06,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:03:06,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:03:06,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:03:06,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:03:06,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:03:06,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:03:06,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:03:06,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:03:06,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:03:06,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:03:06,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:03:06,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:03:06,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 21:03:06,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:03:06,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:03:06,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:03:06,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:03:06,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:03:06,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:03:06,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:03:06,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:03:06,482 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:03:06,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:03:06,483 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:03:06,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:03:06,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:03:06,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:03:06,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:03:06,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:03:06,483 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:03:06,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:03:06,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:03:06,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:03:06,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:03:06,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:03:06,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:03:06,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:03:06,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:03:06,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:03:06,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:03:06,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:03:06,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:03:06,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:03:06,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:03:06,485 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:03:06,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:03:06,485 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:03:06,485 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 [2022-12-13 21:03:06,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:03:06,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:03:06,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:03:06,666 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:03:06,666 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:03:06,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-13 21:03:09,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:03:09,556 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:03:09,557 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-13 21:03:09,576 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/data/1e50c0a33/d6646f6e5d654fb7acbb4953530764b6/FLAG0fd77ea02 [2022-12-13 21:03:09,590 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/data/1e50c0a33/d6646f6e5d654fb7acbb4953530764b6 [2022-12-13 21:03:09,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:03:09,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:03:09,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:03:09,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:03:09,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:03:09,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:03:09" (1/1) ... [2022-12-13 21:03:09,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65684657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:09, skipping insertion in model container [2022-12-13 21:03:09,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:03:09" (1/1) ... [2022-12-13 21:03:09,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:03:09,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:03:09,967 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 21:03:10,243 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 21:03:10,248 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 21:03:10,249 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 21:03:10,251 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 21:03:10,251 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 21:03:10,282 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 21:03:10,288 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 21:03:10,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:03:10,302 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:03:10,320 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 21:03:10,358 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 21:03:10,360 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 21:03:10,361 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 21:03:10,363 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 21:03:10,364 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 21:03:10,368 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 21:03:10,369 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 21:03:10,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:03:10,446 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:03:10,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10 WrapperNode [2022-12-13 21:03:10,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:03:10,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:03:10,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:03:10,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:03:10,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,485 INFO L138 Inliner]: procedures = 502, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 60 [2022-12-13 21:03:10,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:03:10,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:03:10,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:03:10,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:03:10,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,501 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:03:10,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:03:10,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:03:10,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:03:10,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (1/1) ... [2022-12-13 21:03:10,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:03:10,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:10,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:10,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:03:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 21:03:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 21:03:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 21:03:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:03:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 21:03:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:03:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:03:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:03:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:03:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 21:03:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:03:10,679 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:03:10,681 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:03:10,790 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:03:10,795 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:03:10,795 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:03:10,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:10 BoogieIcfgContainer [2022-12-13 21:03:10,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:03:10,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:03:10,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:03:10,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:03:10,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:03:09" (1/3) ... [2022-12-13 21:03:10,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad1913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:03:10, skipping insertion in model container [2022-12-13 21:03:10,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:10" (2/3) ... [2022-12-13 21:03:10,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad1913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:03:10, skipping insertion in model container [2022-12-13 21:03:10,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:10" (3/3) ... [2022-12-13 21:03:10,804 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-13 21:03:10,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:03:10,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 21:03:10,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:03:10,865 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=PETRI_NET, 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;@6d7aa0c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:03:10,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 21:03:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-12-13 21:03:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 21:03:10,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:03:10,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:10,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 21:03:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-12-13 21:03:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:10,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234921985] [2022-12-13 21:03:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:10,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:11,017 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:11,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:11,049 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:03:11,050 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 21:03:11,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 21:03:11,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:03:11,055 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 21:03:11,058 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:03:11,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:03:11 BoogieIcfgContainer [2022-12-13 21:03:11,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:03:11,074 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:03:11,074 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:03:11,074 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:03:11,075 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:10" (3/4) ... [2022-12-13 21:03:11,077 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 21:03:11,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:03:11,078 INFO L158 Benchmark]: Toolchain (without parser) took 1483.39ms. Allocated memory is still 216.0MB. Free memory was 151.7MB in the beginning and 175.2MB in the end (delta: -23.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:11,078 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:11,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 850.64ms. Allocated memory is still 216.0MB. Free memory was 151.5MB in the beginning and 142.0MB in the end (delta: 9.4MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2022-12-13 21:03:11,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.32ms. Allocated memory is still 216.0MB. Free memory was 142.0MB in the beginning and 139.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 21:03:11,079 INFO L158 Benchmark]: Boogie Preprocessor took 17.55ms. Allocated memory is still 216.0MB. Free memory was 139.3MB in the beginning and 137.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:03:11,079 INFO L158 Benchmark]: RCFGBuilder took 292.85ms. Allocated memory is still 216.0MB. Free memory was 137.9MB in the beginning and 124.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 21:03:11,080 INFO L158 Benchmark]: TraceAbstraction took 275.28ms. Allocated memory is still 216.0MB. Free memory was 123.9MB in the beginning and 175.2MB in the end (delta: -51.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:11,080 INFO L158 Benchmark]: Witness Printer took 2.92ms. Allocated memory is still 216.0MB. Free memory was 175.2MB in the beginning and 175.2MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:03:11,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 850.64ms. Allocated memory is still 216.0MB. Free memory was 151.5MB in the beginning and 142.0MB in the end (delta: 9.4MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.32ms. Allocated memory is still 216.0MB. Free memory was 142.0MB in the beginning and 139.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.55ms. Allocated memory is still 216.0MB. Free memory was 139.3MB in the beginning and 137.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 292.85ms. Allocated memory is still 216.0MB. Free memory was 137.9MB in the beginning and 124.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 275.28ms. Allocated memory is still 216.0MB. Free memory was 123.9MB in the beginning and 175.2MB in the end (delta: -51.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.92ms. Allocated memory is still 216.0MB. Free memory was 175.2MB in the beginning and 175.2MB in the end (delta: 2.0kB). 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: 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 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] [L1570] 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) [L1570] RET printLine("Calling bad()...") VAL [\old(argc)=1073741829, argc=1073741829, argv={1073741827:1073741831}, argv={1073741827:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_fgets_predec_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_predec_65b_badSink; [L1553] 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)] = ""; [L1565] CALL funcPtr(data) [L1578] --data VAL [\old(data)=-2147483648, 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: 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, 24 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=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, 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 [2022-12-13 21:03:11,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/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_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 --- 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 [2022-12-13 21:03:12,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:03:12,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:03:12,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:03:12,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:03:12,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:03:12,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:03:12,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:03:12,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:03:12,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:03:12,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:03:12,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:03:12,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:03:12,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:03:12,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:03:12,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:03:12,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:03:12,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:03:12,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:03:12,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:03:12,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:03:12,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:03:12,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:03:12,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:03:12,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:03:12,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:03:12,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:03:12,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:03:12,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:03:12,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:03:12,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:03:12,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:03:12,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:03:12,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:03:12,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:03:12,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:03:12,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:03:12,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:03:12,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:03:12,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:03:12,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:03:12,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 21:03:12,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:03:12,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:03:12,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:03:12,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:03:12,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:03:12,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:03:12,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:03:12,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:03:12,737 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:03:12,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:03:12,738 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:03:12,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:03:12,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:03:12,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:03:12,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:03:12,738 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:03:12,739 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:03:12,739 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:03:12,739 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:03:12,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:03:12,739 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:03:12,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:03:12,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:03:12,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:03:12,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:03:12,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:03:12,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:03:12,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:03:12,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:03:12,741 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:03:12,741 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:03:12,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:03:12,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:03:12,742 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:03:12,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:03:12,742 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:03:12,742 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:03:12,743 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 [2022-12-13 21:03:12,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:03:12,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:03:12,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:03:12,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:03:12,999 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:03:13,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-13 21:03:15,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:03:15,802 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:03:15,803 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-13 21:03:15,819 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/data/bfbf4f738/4f544606708a42a48bb58816cf356974/FLAG5072f4f13 [2022-12-13 21:03:15,837 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/data/bfbf4f738/4f544606708a42a48bb58816cf356974 [2022-12-13 21:03:15,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:03:15,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:03:15,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:03:15,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:03:15,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:03:15,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:03:15" (1/1) ... [2022-12-13 21:03:15,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3bff0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:15, skipping insertion in model container [2022-12-13 21:03:15,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:03:15" (1/1) ... [2022-12-13 21:03:15,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:03:15,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:03:16,160 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 21:03:16,458 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 21:03:16,469 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 21:03:16,470 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 21:03:16,473 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 21:03:16,473 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 21:03:16,490 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 21:03:16,495 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 21:03:16,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:03:16,511 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:03:16,530 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 21:03:16,577 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 21:03:16,579 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 21:03:16,580 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 21:03:16,582 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 21:03:16,582 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 21:03:16,586 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 21:03:16,588 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 21:03:16,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:03:16,727 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:03:16,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16 WrapperNode [2022-12-13 21:03:16,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:03:16,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:03:16,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:03:16,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:03:16,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,768 INFO L138 Inliner]: procedures = 507, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2022-12-13 21:03:16,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:03:16,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:03:16,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:03:16,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:03:16,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,786 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:03:16,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:03:16,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:03:16,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:03:16,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (1/1) ... [2022-12-13 21:03:16,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:03:16,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:16,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:16,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:03:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 21:03:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 21:03:16,839 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 21:03:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:03:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 21:03:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:03:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:03:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:03:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:03:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 21:03:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 21:03:16,949 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:03:16,950 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:03:17,069 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:03:17,075 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:03:17,075 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:03:17,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:17 BoogieIcfgContainer [2022-12-13 21:03:17,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:03:17,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:03:17,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:03:17,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:03:17,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:03:15" (1/3) ... [2022-12-13 21:03:17,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b668125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:03:17, skipping insertion in model container [2022-12-13 21:03:17,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:16" (2/3) ... [2022-12-13 21:03:17,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b668125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:03:17, skipping insertion in model container [2022-12-13 21:03:17,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:17" (3/3) ... [2022-12-13 21:03:17,083 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2022-12-13 21:03:17,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:03:17,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 21:03:17,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:03:17,138 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=PETRI_NET, 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;@5efff776, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:03:17,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 21:03:17,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-12-13 21:03:17,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 21:03:17,147 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:03:17,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:17,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 21:03:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:17,153 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-12-13 21:03:17,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:03:17,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598762636] [2022-12-13 21:03:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:17,164 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 [2022-12-13 21:03:17,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:03:17,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 21:03:17,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:03:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:17,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:17,352 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 21:03:17,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 21:03:17,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 21:03:17,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 21:03:17,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:03:17,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 21:03:17,561 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 21:03:17,565 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:03:17,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:03:17 BoogieIcfgContainer [2022-12-13 21:03:17,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:03:17,585 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:03:17,585 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:03:17,585 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:03:17,585 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:17" (3/4) ... [2022-12-13 21:03:17,588 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 21:03:17,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:03:17,588 INFO L158 Benchmark]: Toolchain (without parser) took 1747.73ms. Allocated memory is still 75.5MB. Free memory was 55.8MB in the beginning and 46.6MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 21:03:17,589 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:17,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 885.85ms. Allocated memory is still 75.5MB. Free memory was 55.5MB in the beginning and 45.0MB in the end (delta: 10.5MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-12-13 21:03:17,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.17ms. Allocated memory is still 75.5MB. Free memory was 45.0MB in the beginning and 42.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:03:17,590 INFO L158 Benchmark]: Boogie Preprocessor took 20.09ms. Allocated memory is still 75.5MB. Free memory was 41.7MB in the beginning and 40.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:17,590 INFO L158 Benchmark]: RCFGBuilder took 287.56ms. Allocated memory is still 75.5MB. Free memory was 39.6MB in the beginning and 44.8MB in the end (delta: -5.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-12-13 21:03:17,590 INFO L158 Benchmark]: TraceAbstraction took 505.71ms. Allocated memory is still 75.5MB. Free memory was 44.3MB in the beginning and 47.0MB in the end (delta: -2.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 21:03:17,590 INFO L158 Benchmark]: Witness Printer took 2.77ms. Allocated memory is still 75.5MB. Free memory was 47.0MB in the beginning and 46.6MB in the end (delta: 386.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:17,592 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 60.8MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 885.85ms. Allocated memory is still 75.5MB. Free memory was 55.5MB in the beginning and 45.0MB in the end (delta: 10.5MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.17ms. Allocated memory is still 75.5MB. Free memory was 45.0MB in the beginning and 42.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.09ms. Allocated memory is still 75.5MB. Free memory was 41.7MB in the beginning and 40.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 287.56ms. Allocated memory is still 75.5MB. Free memory was 39.6MB in the beginning and 44.8MB in the end (delta: -5.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 505.71ms. Allocated memory is still 75.5MB. Free memory was 44.3MB in the beginning and 47.0MB in the end (delta: -2.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 2.77ms. Allocated memory is still 75.5MB. Free memory was 47.0MB in the beginning and 46.6MB in the end (delta: 386.6kB). 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 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] [L1570] 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) [L1570] 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] [L1571] CALL CWE191_Integer_Underflow__int_fgets_predec_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_predec_65b_badSink; [L1553] 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)] = ""; [L1565] CALL funcPtr(data) [L1578] --data VAL [\old(data)=-2147483648, 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: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 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 [2022-12-13 21:03:17,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2616774-563b-4d28-ae24-e2ea2d08317e/bin/uautomizer-uyxdKDjOR8/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