./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_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_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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_35df06b5-1c21-47bb-b7b4-b7a86c720518/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 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a --- 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 10:56:49,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:56:49,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:56:49,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:56:49,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:56:49,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:56:49,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:56:49,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:56:49,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:56:49,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:56:49,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:56:49,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:56:49,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:56:49,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:56:49,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:56:49,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:56:49,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:56:49,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:56:49,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:56:49,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:56:49,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:56:49,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:56:49,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:56:49,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:56:49,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:56:49,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:56:49,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:56:49,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:56:49,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:56:49,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:56:49,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:56:49,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:56:49,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:56:49,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:56:49,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:56:49,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:56:49,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:56:49,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:56:49,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:56:49,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:56:49,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:56:49,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 10:56:49,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:56:49,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:56:49,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:56:49,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:56:49,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 10:56:49,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 10:56:49,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:56:49,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:56:49,642 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:56:49,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:56:49,642 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 10:56:49,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:56:49,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:56:49,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:56:49,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:56:49,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:56:49,643 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 10:56:49,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:56:49,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:56:49,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:56:49,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:56:49,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:56:49,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:56:49,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:56:49,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:56:49,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:56:49,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:56:49,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:56:49,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:56:49,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 10:56:49,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 10:56:49,646 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 10:56:49,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 10:56:49,646 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 10:56:49,646 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_35df06b5-1c21-47bb-b7b4-b7a86c720518/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a [2022-12-13 10:56:49,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:56:49,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:56:49,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:56:49,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:56:49,848 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:56:49,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-12-13 10:56:52,313 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:56:52,554 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:56:52,554 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-12-13 10:56:52,566 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/data/2d39b6ce6/2172e3b58f80464ba60481105cd30c57/FLAG24f8d6d1b [2022-12-13 10:56:52,889 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/data/2d39b6ce6/2172e3b58f80464ba60481105cd30c57 [2022-12-13 10:56:52,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:56:52,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:56:52,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:56:52,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:56:52,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:56:52,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:56:52" (1/1) ... [2022-12-13 10:56:52,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69875606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:52, skipping insertion in model container [2022-12-13 10:56:52,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:56:52" (1/1) ... [2022-12-13 10:56:52,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:56:52,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:56:53,160 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 10:56:53,456 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 10:56:53,460 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 10:56:53,462 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 10:56:53,463 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 10:56:53,464 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 10:56:53,479 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 10:56:53,482 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 10:56:53,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:56:53,492 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:56:53,506 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 10:56:53,538 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 10:56:53,540 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 10:56:53,541 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 10:56:53,543 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 10:56:53,544 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 10:56:53,547 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 10:56:53,549 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 10:56:53,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:56:53,685 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:56:53,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53 WrapperNode [2022-12-13 10:56:53,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:56:53,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:56:53,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:56:53,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:56:53,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,732 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 53 [2022-12-13 10:56:53,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:56:53,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:56:53,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:56:53,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:56:53,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,749 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:56:53,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:56:53,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:56:53,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:56:53,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:56:53,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:53,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:53,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 10:56:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 10:56:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 10:56:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 10:56:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 10:56:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 10:56:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:56:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:56:53,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:56:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 10:56:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 10:56:53,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:56:53,903 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:56:53,905 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:56:53,990 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:56:53,998 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:56:53,999 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 10:56:54,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:56:54 BoogieIcfgContainer [2022-12-13 10:56:54,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:56:54,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:56:54,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:56:54,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:56:54,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:56:52" (1/3) ... [2022-12-13 10:56:54,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649d4c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:56:54, skipping insertion in model container [2022-12-13 10:56:54,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (2/3) ... [2022-12-13 10:56:54,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649d4c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:56:54, skipping insertion in model container [2022-12-13 10:56:54,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:56:54" (3/3) ... [2022-12-13 10:56:54,009 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-12-13 10:56:54,027 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:56:54,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 10:56:54,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:56:54,082 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;@3bfbd763, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:56:54,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 10:56:54,086 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 10:56:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 10:56:54,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:56:54,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:56:54,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 10:56:54,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:54,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-13 10:56:54,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:54,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523459426] [2022-12-13 10:56:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:54,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:54,239 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:56:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:54,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:56:54,284 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 10:56:54,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 10:56:54,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 10:56:54,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:56:54,292 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 10:56:54,296 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 10:56:54,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:56:54 BoogieIcfgContainer [2022-12-13 10:56:54,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 10:56:54,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 10:56:54,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 10:56:54,318 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 10:56:54,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:56:54" (3/4) ... [2022-12-13 10:56:54,321 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 10:56:54,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 10:56:54,322 INFO L158 Benchmark]: Toolchain (without parser) took 1428.95ms. Allocated memory is still 146.8MB. Free memory was 109.7MB in the beginning and 73.9MB in the end (delta: 35.8MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2022-12-13 10:56:54,322 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 10:56:54,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 791.66ms. Allocated memory is still 146.8MB. Free memory was 109.7MB in the beginning and 108.8MB in the end (delta: 845.7kB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2022-12-13 10:56:54,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.93ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 105.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 10:56:54,324 INFO L158 Benchmark]: Boogie Preprocessor took 19.14ms. Allocated memory is still 146.8MB. Free memory was 105.4MB in the beginning and 104.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 10:56:54,324 INFO L158 Benchmark]: RCFGBuilder took 248.65ms. Allocated memory is still 146.8MB. Free memory was 104.0MB in the beginning and 91.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 10:56:54,325 INFO L158 Benchmark]: TraceAbstraction took 313.84ms. Allocated memory is still 146.8MB. Free memory was 90.7MB in the beginning and 73.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 10:56:54,325 INFO L158 Benchmark]: Witness Printer took 3.83ms. Allocated memory is still 146.8MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 10:56:54,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 791.66ms. Allocated memory is still 146.8MB. Free memory was 109.7MB in the beginning and 108.8MB in the end (delta: 845.7kB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.93ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 105.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.14ms. Allocated memory is still 146.8MB. Free memory was 105.4MB in the beginning and 104.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 248.65ms. Allocated memory is still 146.8MB. Free memory was 104.0MB in the beginning and 91.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 313.84ms. Allocated memory is still 146.8MB. Free memory was 90.7MB in the beginning and 73.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.83ms. Allocated memory is still 146.8MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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)=1073741829, argc=1073741829, argv={1073741827:1073741831}, argv={1073741827:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_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_sub_51b_badSink(data) [L1577] data - 1 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 10:56:54,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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_35df06b5-1c21-47bb-b7b4-b7a86c720518/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 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a --- 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 10:56:55,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:56:55,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:56:55,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:56:55,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:56:55,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:56:55,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:56:55,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:56:55,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:56:55,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:56:55,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:56:55,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:56:55,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:56:55,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:56:55,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:56:55,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:56:55,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:56:55,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:56:55,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:56:55,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:56:55,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:56:55,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:56:55,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:56:55,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:56:55,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:56:55,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:56:55,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:56:55,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:56:55,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:56:55,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:56:55,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:56:55,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:56:55,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:56:55,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:56:55,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:56:55,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:56:55,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:56:55,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:56:55,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:56:55,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:56:55,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:56:55,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 10:56:56,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:56:56,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:56:56,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:56:56,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:56:56,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 10:56:56,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 10:56:56,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:56:56,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:56:56,016 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:56:56,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:56:56,016 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 10:56:56,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:56:56,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:56:56,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:56:56,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:56:56,017 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 10:56:56,017 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 10:56:56,018 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 10:56:56,018 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 10:56:56,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:56:56,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:56:56,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:56:56,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:56:56,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:56:56,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:56:56,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:56:56,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:56:56,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:56:56,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:56:56,019 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 10:56:56,019 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 10:56:56,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 10:56:56,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 10:56:56,020 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 10:56:56,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 10:56:56,020 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 10:56:56,020 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 10:56:56,020 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_35df06b5-1c21-47bb-b7b4-b7a86c720518/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a [2022-12-13 10:56:56,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:56:56,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:56:56,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:56:56,252 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:56:56,252 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:56:56,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-12-13 10:56:58,868 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:56:59,131 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:56:59,132 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-12-13 10:56:59,146 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/data/e2c30c1dc/108a2c31d960461fbbe8908bb9a8eb87/FLAG69805684e [2022-12-13 10:56:59,157 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/data/e2c30c1dc/108a2c31d960461fbbe8908bb9a8eb87 [2022-12-13 10:56:59,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:56:59,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:56:59,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:56:59,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:56:59,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:56:59,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:56:59" (1/1) ... [2022-12-13 10:56:59,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280f0aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:59, skipping insertion in model container [2022-12-13 10:56:59,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:56:59" (1/1) ... [2022-12-13 10:56:59,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:56:59,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:56:59,444 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 10:56:59,797 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 10:56:59,802 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 10:56:59,803 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 10:56:59,804 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 10:56:59,805 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 10:56:59,820 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 10:56:59,822 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 10:56:59,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:56:59,835 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:56:59,848 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 10:56:59,879 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 10:56:59,880 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 10:56:59,881 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 10:56:59,882 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 10:56:59,883 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 10:56:59,886 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 10:56:59,887 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 10:56:59,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:57:00,020 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:57:00,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00 WrapperNode [2022-12-13 10:57:00,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:57:00,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:57:00,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:57:00,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:57:00,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,060 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 52 [2022-12-13 10:57:00,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:57:00,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:57:00,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:57:00,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:57:00,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,078 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:57:00,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:57:00,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:57:00,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:57:00,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (1/1) ... [2022-12-13 10:57:00,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:57:00,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:57:00,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 10:57:00,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 10:57:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 10:57:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 10:57:00,142 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 10:57:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 10:57:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 10:57:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:57:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:57:00,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:57:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 10:57:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 10:57:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 10:57:00,266 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:57:00,268 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:57:00,388 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:57:00,394 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:57:00,394 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 10:57:00,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:57:00 BoogieIcfgContainer [2022-12-13 10:57:00,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:57:00,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:57:00,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:57:00,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:57:00,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:56:59" (1/3) ... [2022-12-13 10:57:00,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529d7641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:57:00, skipping insertion in model container [2022-12-13 10:57:00,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:57:00" (2/3) ... [2022-12-13 10:57:00,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529d7641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:57:00, skipping insertion in model container [2022-12-13 10:57:00,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:57:00" (3/3) ... [2022-12-13 10:57:00,409 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-12-13 10:57:00,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:57:00,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 10:57:00,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:57:00,477 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;@59009450, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:57:00,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 10:57:00,481 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 10:57:00,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 10:57:00,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 10:57:00,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:00,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 10:57:00,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-13 10:57:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 10:57:00,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719156899] [2022-12-13 10:57:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:00,510 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 10:57:00,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 10:57:00,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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 10:57:00,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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 10:57:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:57:00,644 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:57:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:57:00,700 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 10:57:00,702 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 10:57:00,703 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 10:57:00,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 10:57:00,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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 10:57:00,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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 10:57:00,909 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 10:57:00,913 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 10:57:00,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:57:00 BoogieIcfgContainer [2022-12-13 10:57:00,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 10:57:00,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 10:57:00,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 10:57:00,932 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 10:57:00,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:57:00" (3/4) ... [2022-12-13 10:57:00,936 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 10:57:00,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 10:57:00,937 INFO L158 Benchmark]: Toolchain (without parser) took 1776.21ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 61.3MB in the beginning and 59.9MB in the end (delta: 1.4MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2022-12-13 10:57:00,937 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 67.1MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 10:57:00,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 859.19ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 57.6MB in the end (delta: 3.5MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2022-12-13 10:57:00,939 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.01ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 54.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 10:57:00,939 INFO L158 Benchmark]: Boogie Preprocessor took 20.78ms. Allocated memory is still 86.0MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 10:57:00,940 INFO L158 Benchmark]: RCFGBuilder took 314.75ms. Allocated memory is still 86.0MB. Free memory was 52.5MB in the beginning and 38.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 10:57:00,940 INFO L158 Benchmark]: TraceAbstraction took 528.22ms. Allocated memory is still 104.9MB. Free memory was 77.8MB in the beginning and 60.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 10:57:00,941 INFO L158 Benchmark]: Witness Printer took 4.50ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 59.9MB in the end (delta: 564.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 10:57:00,944 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 67.1MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 859.19ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 57.6MB in the end (delta: 3.5MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.01ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 54.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.78ms. Allocated memory is still 86.0MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 314.75ms. Allocated memory is still 86.0MB. Free memory was 52.5MB in the beginning and 38.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 528.22ms. Allocated memory is still 104.9MB. Free memory was 77.8MB in the beginning and 60.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.50ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 59.9MB in the end (delta: 564.2kB). 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_sub_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_sub_51b_badSink(data) [L1577] data - 1 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 10:57:00,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35df06b5-1c21-47bb-b7b4-b7a86c720518/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