./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_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_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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_12be6554-f96e-4563-92ec-3135839bfb5d/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 5da96c7c95b6637e4369af8f60280dac207775e40a56f4207c6d2a8154635b52 --- 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 11:40:26,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:40:26,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:40:26,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:40:26,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:40:26,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:40:26,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:40:26,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:40:26,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:40:26,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:40:26,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:40:26,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:40:26,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:40:26,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:40:26,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:40:26,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:40:26,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:40:26,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:40:26,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:40:26,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:40:26,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:40:26,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:40:26,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:40:26,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:40:26,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:40:26,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:40:26,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:40:26,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:40:26,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:40:26,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:40:26,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:40:26,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:40:26,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:40:26,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:40:26,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:40:26,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:40:26,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:40:26,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:40:26,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:40:26,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:40:26,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:40:26,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 11:40:26,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:40:26,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:40:26,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:40:26,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:40:26,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:40:26,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:40:26,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:40:26,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:40:26,632 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:40:26,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:40:26,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:40:26,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:40:26,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:40:26,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:40:26,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:40:26,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:40:26,633 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:40:26,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:40:26,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:40:26,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:40:26,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:40:26,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:40:26,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:40:26,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:40:26,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:40:26,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:40:26,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:40:26,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:40:26,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:40:26,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:40:26,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:40:26,635 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:40:26,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:40:26,635 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:40:26,635 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_12be6554-f96e-4563-92ec-3135839bfb5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5da96c7c95b6637e4369af8f60280dac207775e40a56f4207c6d2a8154635b52 [2022-12-13 11:40:26,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:40:26,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:40:26,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:40:26,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:40:26,856 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:40:26,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_bad.i [2022-12-13 11:40:29,533 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:40:29,782 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:40:29,783 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_bad.i [2022-12-13 11:40:29,795 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/data/adf88d80b/bbe618cbac2f429e9a01d5f83a7b9245/FLAG069d6b0f5 [2022-12-13 11:40:29,809 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/data/adf88d80b/bbe618cbac2f429e9a01d5f83a7b9245 [2022-12-13 11:40:29,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:40:29,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:40:29,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:40:29,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:40:29,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:40:29,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:40:29" (1/1) ... [2022-12-13 11:40:29,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b33d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:29, skipping insertion in model container [2022-12-13 11:40:29,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:40:29" (1/1) ... [2022-12-13 11:40:29,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:40:29,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:40:30,108 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 11:40:30,379 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:40:30,383 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:40:30,384 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:40:30,386 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:40:30,387 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:40:30,406 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 11:40:30,409 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 11:40:30,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:40:30,420 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:40:30,435 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 11:40:30,469 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:40:30,470 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:40:30,471 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:40:30,473 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:40:30,474 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:40:30,477 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 11:40:30,478 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 11:40:30,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:40:30,560 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:40:30,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30 WrapperNode [2022-12-13 11:40:30,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:40:30,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:40:30,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:40:30,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:40:30,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,597 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-12-13 11:40:30,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:40:30,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:40:30,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:40:30,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:40:30,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:40:30,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:40:30,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:40:30,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:40:30,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (1/1) ... [2022-12-13 11:40:30,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:40:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:30,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:40:30,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:40:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 11:40:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 11:40:30,695 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 11:40:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:40:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 11:40:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:40:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:40:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:40:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:40:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 11:40:30,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:40:30,826 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:40:30,828 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:40:30,928 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:40:30,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:40:30,933 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:40:30,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:30 BoogieIcfgContainer [2022-12-13 11:40:30,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:40:30,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:40:30,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:40:30,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:40:30,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:40:29" (1/3) ... [2022-12-13 11:40:30,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adf3099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:40:30, skipping insertion in model container [2022-12-13 11:40:30,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:30" (2/3) ... [2022-12-13 11:40:30,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adf3099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:40:30, skipping insertion in model container [2022-12-13 11:40:30,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:30" (3/3) ... [2022-12-13 11:40:30,941 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_51_bad.i [2022-12-13 11:40:30,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:40:30,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:40:30,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:40:30,995 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;@780205f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:40:30,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 11:40:30,998 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 11:40:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 11:40:31,004 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:40:31,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:31,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 11:40:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-13 11:40:31,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:31,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108328649] [2022-12-13 11:40:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:40:31,114 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:40:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:40:31,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:40:31,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:40:31,150 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 11:40:31,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 11:40:31,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:40:31,155 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 11:40:31,158 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:40:31,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:40:31 BoogieIcfgContainer [2022-12-13 11:40:31,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:40:31,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:40:31,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:40:31,175 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:40:31,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:30" (3/4) ... [2022-12-13 11:40:31,178 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 11:40:31,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:40:31,179 INFO L158 Benchmark]: Toolchain (without parser) took 1366.08ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 124.0MB in the beginning and 136.5MB in the end (delta: -12.5MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2022-12-13 11:40:31,179 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory was 123.9MB in the beginning and 123.9MB in the end (delta: 24.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:40:31,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 746.74ms. Allocated memory is still 161.5MB. Free memory was 123.7MB in the beginning and 61.4MB in the end (delta: 62.3MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2022-12-13 11:40:31,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.43ms. Allocated memory is still 161.5MB. Free memory was 60.8MB in the beginning and 57.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 11:40:31,180 INFO L158 Benchmark]: Boogie Preprocessor took 17.70ms. Allocated memory is still 161.5MB. Free memory was 57.9MB in the beginning and 56.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:40:31,180 INFO L158 Benchmark]: RCFGBuilder took 318.21ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 56.6MB in the beginning and 154.4MB in the end (delta: -97.8MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-12-13 11:40:31,181 INFO L158 Benchmark]: TraceAbstraction took 238.26ms. Allocated memory is still 195.0MB. Free memory was 153.3MB in the beginning and 136.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 11:40:31,181 INFO L158 Benchmark]: Witness Printer took 3.01ms. Allocated memory is still 195.0MB. Free memory was 136.5MB in the beginning and 136.5MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:40:31,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 161.5MB. Free memory was 123.9MB in the beginning and 123.9MB in the end (delta: 24.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 746.74ms. Allocated memory is still 161.5MB. Free memory was 123.7MB in the beginning and 61.4MB in the end (delta: 62.3MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.43ms. Allocated memory is still 161.5MB. Free memory was 60.8MB in the beginning and 57.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.70ms. Allocated memory is still 161.5MB. Free memory was 57.9MB in the beginning and 56.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 318.21ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 56.6MB in the beginning and 154.4MB in the end (delta: -97.8MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * TraceAbstraction took 238.26ms. Allocated memory is still 195.0MB. Free memory was 153.3MB in the beginning and 136.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.01ms. Allocated memory is still 195.0MB. Free memory was 136.5MB in the beginning and 136.5MB in the end (delta: 2.7kB). 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741825:1073741829}, argv={1073741825:1073741829}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_51_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_51b_badSink(data) [L1577] --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: 1577]: 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, 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 11:40:31,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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_12be6554-f96e-4563-92ec-3135839bfb5d/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 5da96c7c95b6637e4369af8f60280dac207775e40a56f4207c6d2a8154635b52 --- 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 11:40:33,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:40:33,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:40:33,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:40:33,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:40:33,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:40:33,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:40:33,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:40:33,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:40:33,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:40:33,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:40:33,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:40:33,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:40:33,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:40:33,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:40:33,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:40:33,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:40:33,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:40:33,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:40:33,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:40:33,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:40:33,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:40:33,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:40:33,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:40:33,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:40:33,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:40:33,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:40:33,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:40:33,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:40:33,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:40:33,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:40:33,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:40:33,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:40:33,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:40:33,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:40:33,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:40:33,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:40:33,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:40:33,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:40:33,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:40:33,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:40:33,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 11:40:33,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:40:33,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:40:33,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:40:33,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:40:33,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:40:33,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:40:33,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:40:33,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:40:33,089 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:40:33,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:40:33,089 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:40:33,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:40:33,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:40:33,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:40:33,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:40:33,090 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:40:33,090 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 11:40:33,090 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:40:33,090 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 11:40:33,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:40:33,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:40:33,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:40:33,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:40:33,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:40:33,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:40:33,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:40:33,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:40:33,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:40:33,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:40:33,092 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 11:40:33,092 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 11:40:33,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:40:33,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:40:33,092 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:40:33,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:40:33,093 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 11:40:33,093 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:40:33,093 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_12be6554-f96e-4563-92ec-3135839bfb5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5da96c7c95b6637e4369af8f60280dac207775e40a56f4207c6d2a8154635b52 [2022-12-13 11:40:33,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:40:33,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:40:33,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:40:33,344 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:40:33,345 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:40:33,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_bad.i [2022-12-13 11:40:35,912 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:40:36,177 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:40:36,178 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_51_bad.i [2022-12-13 11:40:36,196 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/data/980691318/9441fbf4aa4140918123788f2023d90f/FLAG393673d5c [2022-12-13 11:40:36,211 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/data/980691318/9441fbf4aa4140918123788f2023d90f [2022-12-13 11:40:36,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:40:36,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:40:36,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:40:36,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:40:36,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:40:36,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:40:36" (1/1) ... [2022-12-13 11:40:36,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8079eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:36, skipping insertion in model container [2022-12-13 11:40:36,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:40:36" (1/1) ... [2022-12-13 11:40:36,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:40:36,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:40:36,605 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 11:40:36,929 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:40:36,934 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:40:36,935 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:40:36,936 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:40:36,937 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:40:36,953 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 11:40:36,956 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 11:40:36,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:40:36,973 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:40:36,992 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 11:40:37,031 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 11:40:37,032 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:40:37,033 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 11:40:37,034 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:40:37,034 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 11:40:37,037 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 11:40:37,038 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 11:40:37,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:40:37,112 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:40:37,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37 WrapperNode [2022-12-13 11:40:37,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:40:37,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:40:37,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:40:37,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:40:37,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,160 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55 [2022-12-13 11:40:37,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:40:37,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:40:37,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:40:37,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:40:37,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,179 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:40:37,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:40:37,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:40:37,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:40:37,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (1/1) ... [2022-12-13 11:40:37,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:40:37,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:37,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:40:37,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:40:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 11:40:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 11:40:37,236 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 11:40:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:40:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 11:40:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:40:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:40:37,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:40:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:40:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 11:40:37,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 11:40:37,357 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:40:37,358 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:40:37,489 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:40:37,495 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:40:37,495 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:40:37,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:37 BoogieIcfgContainer [2022-12-13 11:40:37,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:40:37,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:40:37,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:40:37,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:40:37,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:40:36" (1/3) ... [2022-12-13 11:40:37,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f372653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:40:37, skipping insertion in model container [2022-12-13 11:40:37,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:40:37" (2/3) ... [2022-12-13 11:40:37,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f372653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:40:37, skipping insertion in model container [2022-12-13 11:40:37,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:37" (3/3) ... [2022-12-13 11:40:37,506 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_51_bad.i [2022-12-13 11:40:37,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:40:37,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:40:37,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:40:37,577 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;@3d27dfc2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:40:37,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 11:40:37,582 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 11:40:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 11:40:37,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:40:37,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:37,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 11:40:37,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:37,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-13 11:40:37,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:40:37,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992768843] [2022-12-13 11:40:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:37,610 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 11:40:37,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:40:37,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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 11:40:37,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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 11:40:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:40:37,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:40:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:40:37,773 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 11:40:37,775 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:40:37,776 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 11:40:37,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 11:40:37,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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 11:40:37,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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 11:40:37,983 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 11:40:37,987 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:40:38,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:40:38 BoogieIcfgContainer [2022-12-13 11:40:38,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:40:38,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:40:38,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:40:38,004 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:40:38,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:40:37" (3/4) ... [2022-12-13 11:40:38,007 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 11:40:38,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:40:38,007 INFO L158 Benchmark]: Toolchain (without parser) took 1792.74ms. Allocated memory is still 67.1MB. Free memory was 42.2MB in the beginning and 36.7MB in the end (delta: 5.5MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-12-13 11:40:38,008 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 54.5MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:40:38,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 896.35ms. Allocated memory is still 67.1MB. Free memory was 42.0MB in the beginning and 40.9MB in the end (delta: 1.1MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2022-12-13 11:40:38,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.44ms. Allocated memory is still 67.1MB. Free memory was 40.9MB in the beginning and 37.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 11:40:38,009 INFO L158 Benchmark]: Boogie Preprocessor took 21.80ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 35.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:40:38,010 INFO L158 Benchmark]: RCFGBuilder took 313.92ms. Allocated memory is still 67.1MB. Free memory was 35.4MB in the beginning and 38.6MB in the end (delta: -3.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 11:40:38,010 INFO L158 Benchmark]: TraceAbstraction took 504.28ms. Allocated memory is still 67.1MB. Free memory was 37.9MB in the beginning and 37.1MB in the end (delta: 848.0kB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2022-12-13 11:40:38,011 INFO L158 Benchmark]: Witness Printer took 2.77ms. Allocated memory is still 67.1MB. Free memory was 37.1MB in the beginning and 36.7MB in the end (delta: 313.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:40:38,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 54.5MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 896.35ms. Allocated memory is still 67.1MB. Free memory was 42.0MB in the beginning and 40.9MB in the end (delta: 1.1MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.44ms. Allocated memory is still 67.1MB. Free memory was 40.9MB in the beginning and 37.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.80ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 35.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.92ms. Allocated memory is still 67.1MB. Free memory was 35.4MB in the beginning and 38.6MB in the end (delta: -3.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 504.28ms. Allocated memory is still 67.1MB. Free memory was 37.9MB in the beginning and 37.1MB in the end (delta: 848.0kB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Witness Printer took 2.77ms. Allocated memory is still 67.1MB. Free memory was 37.1MB in the beginning and 36.7MB in the end (delta: 313.4kB). 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_51_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_51b_badSink(data) [L1577] --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: 1577]: 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, 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 11:40:38,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12be6554-f96e-4563-92ec-3135839bfb5d/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