./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_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_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 --- 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 19:10:15,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:10:15,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:10:15,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:10:15,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:10:15,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:10:15,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:10:15,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:10:15,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:10:15,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:10:15,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:10:15,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:10:15,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:10:15,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:10:15,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:10:15,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:10:15,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:10:15,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:10:15,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:10:15,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:10:15,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:10:15,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:10:15,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:10:15,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:10:15,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:10:15,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:10:15,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:10:15,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:10:15,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:10:15,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:10:15,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:10:15,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:10:15,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:10:15,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:10:15,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:10:15,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:10:15,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:10:15,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:10:15,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:10:15,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:10:15,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:10:15,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 19:10:15,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:10:15,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:10:15,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:10:15,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:10:15,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:10:15,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:10:15,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:10:15,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:10:15,601 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:10:15,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:10:15,602 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:10:15,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:10:15,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:10:15,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:10:15,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:10:15,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:10:15,603 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:10:15,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:10:15,603 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:10:15,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:10:15,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:10:15,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:10:15,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:10:15,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:10:15,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:10:15,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:10:15,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:10:15,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:10:15,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:10:15,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:10:15,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:10:15,605 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:10:15,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:10:15,605 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:10:15,606 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_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 [2022-12-13 19:10:15,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:10:15,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:10:15,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:10:15,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:10:15,820 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:10:15,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-13 19:10:18,328 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:10:18,604 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:10:18,604 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-13 19:10:18,620 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/data/3084adf6d/a8b67a51b3da4328a52e2e8074b51f85/FLAGf03fbd8f5 [2022-12-13 19:10:18,902 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/data/3084adf6d/a8b67a51b3da4328a52e2e8074b51f85 [2022-12-13 19:10:18,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:10:18,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:10:18,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:10:18,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:10:18,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:10:18,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:10:18" (1/1) ... [2022-12-13 19:10:18,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d05380a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:18, skipping insertion in model container [2022-12-13 19:10:18,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:10:18" (1/1) ... [2022-12-13 19:10:18,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:10:18,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:10:19,209 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:10:19,547 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:10:19,551 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:10:19,552 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:10:19,554 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:10:19,554 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:10:19,569 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:10:19,574 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:10:19,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:10:19,582 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:10:19,595 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:10:19,625 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:10:19,627 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:10:19,627 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:10:19,629 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:10:19,630 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:10:19,633 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:10:19,634 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:10:19,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:10:19,763 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:10:19,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19 WrapperNode [2022-12-13 19:10:19,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:10:19,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:10:19,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:10:19,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:10:19,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,814 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2022-12-13 19:10:19,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:10:19,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:10:19,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:10:19,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:10:19,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,835 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:10:19,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:10:19,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:10:19,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:10:19,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (1/1) ... [2022-12-13 19:10:19,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:10:19,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:19,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:10:19,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:10:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 19:10:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 19:10:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 19:10:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:10:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 19:10:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:10:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:10:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:10:19,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:10:19,903 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 19:10:19,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:10:20,001 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:10:20,002 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:10:20,101 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:10:20,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:10:20,107 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:10:20,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:10:20 BoogieIcfgContainer [2022-12-13 19:10:20,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:10:20,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:10:20,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:10:20,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:10:20,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:10:18" (1/3) ... [2022-12-13 19:10:20,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2102d4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:10:20, skipping insertion in model container [2022-12-13 19:10:20,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:19" (2/3) ... [2022-12-13 19:10:20,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2102d4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:10:20, skipping insertion in model container [2022-12-13 19:10:20,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:10:20" (3/3) ... [2022-12-13 19:10:20,117 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-13 19:10:20,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:10:20,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:10:20,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:10:20,191 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;@484d03be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:10:20,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 19:10:20,195 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) [2022-12-13 19:10:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 19:10:20,203 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:10:20,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:20,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:10:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2022-12-13 19:10:20,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:10:20,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97535463] [2022-12-13 19:10:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:10:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:10:20,328 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:10:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:10:20,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:10:20,363 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:10:20,364 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 19:10:20,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 19:10:20,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:10:20,369 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 19:10:20,372 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:10:20,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:10:20 BoogieIcfgContainer [2022-12-13 19:10:20,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:10:20,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:10:20,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:10:20,389 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:10:20,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:10:20" (3/4) ... [2022-12-13 19:10:20,392 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:10:20,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:10:20,393 INFO L158 Benchmark]: Toolchain (without parser) took 1487.45ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 86.8MB in the beginning and 107.2MB in the end (delta: -20.3MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-12-13 19:10:20,393 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 123.7MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:10:20,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 858.45ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 86.4MB in the beginning and 92.2MB in the end (delta: -5.7MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2022-12-13 19:10:20,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.62ms. Allocated memory is still 148.9MB. Free memory was 92.2MB in the beginning and 89.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:10:20,394 INFO L158 Benchmark]: Boogie Preprocessor took 24.13ms. Allocated memory is still 148.9MB. Free memory was 89.3MB in the beginning and 88.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:10:20,394 INFO L158 Benchmark]: RCFGBuilder took 269.40ms. Allocated memory is still 148.9MB. Free memory was 88.0MB in the beginning and 74.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 19:10:20,395 INFO L158 Benchmark]: TraceAbstraction took 277.34ms. Allocated memory is still 148.9MB. Free memory was 74.1MB in the beginning and 107.2MB in the end (delta: -33.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:10:20,395 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 148.9MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:10:20,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 123.7MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 858.45ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 86.4MB in the beginning and 92.2MB in the end (delta: -5.7MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.62ms. Allocated memory is still 148.9MB. Free memory was 92.2MB in the beginning and 89.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.13ms. Allocated memory is still 148.9MB. Free memory was 89.3MB in the beginning and 88.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 269.40ms. Allocated memory is still 148.9MB. Free memory was 88.0MB in the beginning and 74.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 277.34ms. Allocated memory is still 148.9MB. Free memory was 74.1MB in the beginning and 107.2MB in the end (delta: -33.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 148.9MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554. 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] [L1577] 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) [L1577] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741826:1073741831}, argv={1073741826:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561] return data; VAL [\old(data)=0, \result=-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] [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 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=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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 19:10:20,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 --- 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 19:10:21,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:10:21,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:10:21,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:10:21,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:10:21,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:10:21,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:10:21,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:10:21,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:10:21,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:10:21,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:10:21,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:10:21,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:10:21,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:10:21,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:10:21,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:10:21,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:10:21,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:10:21,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:10:21,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:10:21,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:10:21,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:10:21,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:10:21,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:10:21,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:10:21,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:10:21,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:10:21,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:10:21,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:10:21,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:10:21,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:10:21,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:10:21,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:10:21,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:10:21,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:10:21,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:10:21,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:10:21,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:10:21,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:10:21,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:10:21,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:10:21,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 19:10:22,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:10:22,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:10:22,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:10:22,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:10:22,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:10:22,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:10:22,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:10:22,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:10:22,003 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:10:22,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:10:22,004 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:10:22,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:10:22,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:10:22,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:10:22,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:10:22,004 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:10:22,004 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 19:10:22,004 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:10:22,005 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 19:10:22,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:10:22,005 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:10:22,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:10:22,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:10:22,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:10:22,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:10:22,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:10:22,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:10:22,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:10:22,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:10:22,006 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 19:10:22,006 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 19:10:22,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:10:22,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:10:22,006 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:10:22,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:10:22,007 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 19:10:22,007 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:10:22,007 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_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 [2022-12-13 19:10:22,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:10:22,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:10:22,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:10:22,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:10:22,258 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:10:22,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-13 19:10:24,742 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:10:25,017 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:10:25,017 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-13 19:10:25,029 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/data/ecff4e5a2/5d463c3b3ce944158f708386ee815255/FLAGcf0d51a98 [2022-12-13 19:10:25,040 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/data/ecff4e5a2/5d463c3b3ce944158f708386ee815255 [2022-12-13 19:10:25,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:10:25,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:10:25,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:10:25,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:10:25,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:10:25,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1e1c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25, skipping insertion in model container [2022-12-13 19:10:25,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:10:25,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:10:25,377 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:10:25,687 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:10:25,691 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:10:25,692 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:10:25,693 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:10:25,694 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:10:25,707 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:10:25,712 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:10:25,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:10:25,724 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:10:25,737 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:10:25,770 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:10:25,771 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:10:25,772 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:10:25,773 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:10:25,774 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:10:25,776 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:10:25,778 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:10:25,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:10:25,869 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:10:25,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25 WrapperNode [2022-12-13 19:10:25,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:10:25,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:10:25,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:10:25,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:10:25,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,907 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-12-13 19:10:25,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:10:25,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:10:25,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:10:25,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:10:25,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:10:25,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:10:25,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:10:25,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:10:25,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (1/1) ... [2022-12-13 19:10:25,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:10:25,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:10:25,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:10:25,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:10:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 19:10:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 19:10:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 19:10:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:10:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 19:10:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:10:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:10:25,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:10:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:10:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 19:10:25,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 19:10:26,106 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:10:26,108 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:10:26,215 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:10:26,220 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:10:26,220 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:10:26,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:10:26 BoogieIcfgContainer [2022-12-13 19:10:26,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:10:26,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:10:26,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:10:26,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:10:26,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:10:25" (1/3) ... [2022-12-13 19:10:26,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45948618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:10:26, skipping insertion in model container [2022-12-13 19:10:26,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:10:25" (2/3) ... [2022-12-13 19:10:26,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45948618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:10:26, skipping insertion in model container [2022-12-13 19:10:26,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:10:26" (3/3) ... [2022-12-13 19:10:26,227 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-13 19:10:26,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:10:26,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:10:26,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:10:26,281 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;@63a6ff8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:10:26,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 19:10:26,285 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) [2022-12-13 19:10:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 19:10:26,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:10:26,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:10:26,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:10:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:10:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2022-12-13 19:10:26,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:10:26,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999065223] [2022-12-13 19:10:26,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:10:26,306 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 19:10:26,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:10:26,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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 19:10:26,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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 19:10:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:10:26,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:10:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:10:26,486 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 19:10:26,487 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:10:26,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 19:10:26,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 19:10:26,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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 19:10:26,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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 19:10:26,694 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 19:10:26,698 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:10:26,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:10:26 BoogieIcfgContainer [2022-12-13 19:10:26,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:10:26,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:10:26,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:10:26,716 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:10:26,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:10:26" (3/4) ... [2022-12-13 19:10:26,718 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:10:26,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:10:26,719 INFO L158 Benchmark]: Toolchain (without parser) took 1676.11ms. Allocated memory is still 83.9MB. Free memory was 58.7MB in the beginning and 34.0MB in the end (delta: 24.7MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2022-12-13 19:10:26,719 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory is still 45.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:10:26,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 825.61ms. Allocated memory is still 83.9MB. Free memory was 58.5MB in the beginning and 50.5MB in the end (delta: 8.0MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-12-13 19:10:26,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.84ms. Allocated memory is still 83.9MB. Free memory was 50.5MB in the beginning and 47.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 19:10:26,720 INFO L158 Benchmark]: Boogie Preprocessor took 20.93ms. Allocated memory is still 83.9MB. Free memory was 47.5MB in the beginning and 45.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:10:26,721 INFO L158 Benchmark]: RCFGBuilder took 291.87ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 52.5MB in the end (delta: -7.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-12-13 19:10:26,721 INFO L158 Benchmark]: TraceAbstraction took 492.33ms. Allocated memory is still 83.9MB. Free memory was 52.1MB in the beginning and 34.4MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 19:10:26,721 INFO L158 Benchmark]: Witness Printer took 2.93ms. Allocated memory is still 83.9MB. Free memory is still 34.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:10:26,723 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 67.1MB. Free memory is still 45.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 825.61ms. Allocated memory is still 83.9MB. Free memory was 58.5MB in the beginning and 50.5MB in the end (delta: 8.0MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.84ms. Allocated memory is still 83.9MB. Free memory was 50.5MB in the beginning and 47.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.93ms. Allocated memory is still 83.9MB. Free memory was 47.5MB in the beginning and 45.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.87ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 52.5MB in the end (delta: -7.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 492.33ms. Allocated memory is still 83.9MB. Free memory was 52.1MB in the beginning and 34.4MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.93ms. Allocated memory is still 83.9MB. Free memory is still 34.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554. 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] [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561] return data; VAL [\old(data)=0, \result=-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] [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 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=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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 19:10:26,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8c7130-4ee1-402a-b8cd-a8973f73fa46/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample