./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_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_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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_9b09eb64-5b29-432c-b273-83142bcaa662/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 d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c --- 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 20:34:29,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:34:29,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:34:29,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:34:29,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:34:29,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:34:29,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:34:29,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:34:29,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:34:29,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:34:29,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:34:29,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:34:29,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:34:29,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:34:29,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:34:29,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:34:29,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:34:29,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:34:29,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:34:29,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:34:29,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:34:29,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:34:29,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:34:29,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:34:29,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:34:29,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:34:29,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:34:29,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:34:29,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:34:29,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:34:29,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:34:29,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:34:29,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:34:29,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:34:29,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:34:29,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:34:29,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:34:29,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:34:29,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:34:29,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:34:29,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:34:29,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 20:34:29,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:34:29,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:34:29,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:34:29,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:34:29,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:34:29,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:34:29,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:34:29,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:34:29,471 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:34:29,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:34:29,472 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:34:29,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:34:29,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:34:29,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:34:29,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:34:29,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:34:29,473 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:34:29,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:34:29,473 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:34:29,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:34:29,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:34:29,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:34:29,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:34:29,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:34:29,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:34:29,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:34:29,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:34:29,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:34:29,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:34:29,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:34:29,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:34:29,475 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:34:29,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:34:29,476 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:34:29,476 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_9b09eb64-5b29-432c-b273-83142bcaa662/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c [2022-12-13 20:34:29,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:34:29,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:34:29,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:34:29,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:34:29,698 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:34:29,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2022-12-13 20:34:32,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:34:32,535 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:34:32,535 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2022-12-13 20:34:32,548 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/data/1bca01008/378de6326cd742f78f64b734c40c4ed4/FLAG85cd6113d [2022-12-13 20:34:32,561 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/data/1bca01008/378de6326cd742f78f64b734c40c4ed4 [2022-12-13 20:34:32,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:34:32,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:34:32,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:34:32,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:34:32,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:34:32,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:34:32" (1/1) ... [2022-12-13 20:34:32,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b213e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:32, skipping insertion in model container [2022-12-13 20:34:32,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:34:32" (1/1) ... [2022-12-13 20:34:32,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:34:32,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:34:32,861 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:34:33,152 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 20:34:33,156 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:34:33,157 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:34:33,159 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:34:33,159 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:34:33,177 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 20:34:33,181 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 20:34:33,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:34:33,190 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:34:33,203 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:34:33,231 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 20:34:33,232 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:34:33,233 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:34:33,234 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:34:33,235 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:34:33,237 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 20:34:33,239 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 20:34:33,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:34:33,352 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:34:33,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33 WrapperNode [2022-12-13 20:34:33,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:34:33,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:34:33,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:34:33,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:34:33,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,391 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-12-13 20:34:33,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:34:33,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:34:33,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:34:33,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:34:33,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,407 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:34:33,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:34:33,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:34:33,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:34:33,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (1/1) ... [2022-12-13 20:34:33,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:34:33,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:33,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:34:33,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:34:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 20:34:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 20:34:33,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 20:34:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:34:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 20:34:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:34:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:34:33,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:34:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:34:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 20:34:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:34:33,567 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:34:33,569 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:34:33,660 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:34:33,664 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:34:33,665 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:34:33,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:34:33 BoogieIcfgContainer [2022-12-13 20:34:33,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:34:33,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:34:33,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:34:33,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:34:33,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:34:32" (1/3) ... [2022-12-13 20:34:33,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3048f0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:34:33, skipping insertion in model container [2022-12-13 20:34:33,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:33" (2/3) ... [2022-12-13 20:34:33,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3048f0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:34:33, skipping insertion in model container [2022-12-13 20:34:33,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:34:33" (3/3) ... [2022-12-13 20:34:33,675 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2022-12-13 20:34:33,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:34:33,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:34:33,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:34:33,740 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;@1944ceee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:34:33,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:34:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 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 20:34:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 20:34:33,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:33,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:33,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 20:34:33,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:33,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-12-13 20:34:33,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:34:33,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362268522] [2022-12-13 20:34:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:33,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:34:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:34:33,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:34:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:34:33,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:34:33,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:34:33,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 20:34:33,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 20:34:33,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:34:33,898 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 20:34:33,901 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:34:33,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:34:33 BoogieIcfgContainer [2022-12-13 20:34:33,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:34:33,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:34:33,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:34:33,918 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:34:33,919 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:34:33" (3/4) ... [2022-12-13 20:34:33,921 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:34:33,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:34:33,922 INFO L158 Benchmark]: Toolchain (without parser) took 1357.63ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 105.5MB in the beginning and 113.6MB in the end (delta: -8.1MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2022-12-13 20:34:33,922 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 144.7MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:34:33,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 788.14ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 105.0MB in the beginning and 149.3MB in the end (delta: -44.3MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. [2022-12-13 20:34:33,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.05ms. Allocated memory is still 188.7MB. Free memory was 149.3MB in the beginning and 146.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:34:33,924 INFO L158 Benchmark]: Boogie Preprocessor took 16.99ms. Allocated memory is still 188.7MB. Free memory was 146.1MB in the beginning and 144.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:34:33,924 INFO L158 Benchmark]: RCFGBuilder took 256.56ms. Allocated memory is still 188.7MB. Free memory was 144.0MB in the beginning and 131.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:34:33,924 INFO L158 Benchmark]: TraceAbstraction took 248.85ms. Allocated memory is still 188.7MB. Free memory was 130.4MB in the beginning and 114.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 20:34:33,925 INFO L158 Benchmark]: Witness Printer took 3.37ms. Allocated memory is still 188.7MB. Free memory was 114.7MB in the beginning and 113.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:34:33,927 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 144.7MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 788.14ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 105.0MB in the beginning and 149.3MB in the end (delta: -44.3MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.05ms. Allocated memory is still 188.7MB. Free memory was 149.3MB in the beginning and 146.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.99ms. Allocated memory is still 188.7MB. Free memory was 146.1MB in the beginning and 144.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.56ms. Allocated memory is still 188.7MB. Free memory was 144.0MB in the beginning and 131.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 248.85ms. Allocated memory is still 188.7MB. Free memory was 130.4MB in the beginning and 114.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.37ms. Allocated memory is still 188.7MB. Free memory was 114.7MB in the beginning and 113.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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] [L1572] 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) [L1572] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741825:1073741831}, argv={1073741825:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1573] CALL CWE191_Integer_Underflow__int_fgets_postdec_01_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] data-- VAL [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: 1564]: 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, 22 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=22occurred 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 20:34:33,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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_9b09eb64-5b29-432c-b273-83142bcaa662/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 d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c --- 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 20:34:35,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:34:35,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:34:35,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:34:35,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:34:35,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:34:35,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:34:35,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:34:35,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:34:35,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:34:35,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:34:35,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:34:35,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:34:35,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:34:35,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:34:35,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:34:35,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:34:35,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:34:35,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:34:35,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:34:35,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:34:35,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:34:35,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:34:35,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:34:35,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:34:35,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:34:35,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:34:35,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:34:35,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:34:35,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:34:35,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:34:35,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:34:35,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:34:35,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:34:35,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:34:35,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:34:35,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:34:35,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:34:35,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:34:35,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:34:35,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:34:35,557 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 20:34:35,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:34:35,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:34:35,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:34:35,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:34:35,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:34:35,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:34:35,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:34:35,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:34:35,583 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:34:35,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:34:35,583 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:34:35,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:34:35,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:34:35,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:34:35,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:34:35,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:34:35,584 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 20:34:35,585 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:34:35,585 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 20:34:35,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:34:35,585 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:34:35,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:34:35,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:34:35,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:34:35,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:34:35,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:34:35,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:34:35,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:34:35,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:34:35,587 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 20:34:35,587 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 20:34:35,587 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:34:35,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:34:35,588 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:34:35,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:34:35,588 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 20:34:35,588 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:34:35,588 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_9b09eb64-5b29-432c-b273-83142bcaa662/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c [2022-12-13 20:34:35,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:34:35,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:34:35,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:34:35,856 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:34:35,857 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:34:35,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2022-12-13 20:34:38,454 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:34:38,694 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:34:38,695 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2022-12-13 20:34:38,708 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/data/560ee9682/8c7805ef5255494795857b882642d1d3/FLAGd1a485947 [2022-12-13 20:34:38,719 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/data/560ee9682/8c7805ef5255494795857b882642d1d3 [2022-12-13 20:34:38,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:34:38,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:34:38,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:34:38,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:34:38,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:34:38,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:34:38" (1/1) ... [2022-12-13 20:34:38,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5805c3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:38, skipping insertion in model container [2022-12-13 20:34:38,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:34:38" (1/1) ... [2022-12-13 20:34:38,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:34:38,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:34:39,013 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:34:39,324 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 20:34:39,329 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:34:39,330 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:34:39,332 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:34:39,333 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:34:39,351 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 20:34:39,356 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 20:34:39,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:34:39,371 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:34:39,390 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:34:39,436 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 20:34:39,438 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:34:39,439 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:34:39,441 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:34:39,442 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:34:39,445 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 20:34:39,447 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 20:34:39,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:34:39,557 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:34:39,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39 WrapperNode [2022-12-13 20:34:39,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:34:39,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:34:39,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:34:39,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:34:39,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,595 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-13 20:34:39,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:34:39,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:34:39,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:34:39,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:34:39,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:34:39,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:34:39,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:34:39,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:34:39,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (1/1) ... [2022-12-13 20:34:39,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:34:39,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:34:39,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:34:39,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:34:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 20:34:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 20:34:39,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 20:34:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:34:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 20:34:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:34:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:34:39,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:34:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:34:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 20:34:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 20:34:39,812 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:34:39,813 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:34:39,928 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:34:39,934 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:34:39,934 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:34:39,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:34:39 BoogieIcfgContainer [2022-12-13 20:34:39,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:34:39,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:34:39,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:34:39,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:34:39,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:34:38" (1/3) ... [2022-12-13 20:34:39,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4252a2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:34:39, skipping insertion in model container [2022-12-13 20:34:39,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:34:39" (2/3) ... [2022-12-13 20:34:39,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4252a2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:34:39, skipping insertion in model container [2022-12-13 20:34:39,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:34:39" (3/3) ... [2022-12-13 20:34:39,945 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2022-12-13 20:34:39,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:34:39,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:34:40,006 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:34:40,013 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;@23bbf37f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:34:40,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:34:40,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 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 20:34:40,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 20:34:40,023 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:34:40,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:34:40,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 20:34:40,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:34:40,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-12-13 20:34:40,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:34:40,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081890277] [2022-12-13 20:34:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:34:40,043 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 20:34:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:34:40,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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 20:34:40,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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 20:34:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:34:40,170 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:34:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:34:40,229 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 20:34:40,231 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:34:40,232 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 20:34:40,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 20:34:40,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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 20:34:40,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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 20:34:40,439 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 20:34:40,442 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:34:40,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:34:40 BoogieIcfgContainer [2022-12-13 20:34:40,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:34:40,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:34:40,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:34:40,458 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:34:40,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:34:39" (3/4) ... [2022-12-13 20:34:40,460 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:34:40,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:34:40,461 INFO L158 Benchmark]: Toolchain (without parser) took 1738.91ms. Allocated memory is still 73.4MB. Free memory was 48.7MB in the beginning and 41.6MB in the end (delta: 7.2MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-12-13 20:34:40,461 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 39.3MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:34:40,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 834.37ms. Allocated memory is still 73.4MB. Free memory was 48.5MB in the beginning and 38.9MB in the end (delta: 9.7MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2022-12-13 20:34:40,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.89ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 35.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:34:40,463 INFO L158 Benchmark]: Boogie Preprocessor took 21.01ms. Allocated memory is still 73.4MB. Free memory was 35.8MB in the beginning and 33.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:34:40,464 INFO L158 Benchmark]: RCFGBuilder took 319.13ms. Allocated memory is still 73.4MB. Free memory was 33.7MB in the beginning and 39.3MB in the end (delta: -5.6MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-12-13 20:34:40,464 INFO L158 Benchmark]: TraceAbstraction took 518.27ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 41.9MB in the end (delta: -3.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 20:34:40,465 INFO L158 Benchmark]: Witness Printer took 2.78ms. Allocated memory is still 73.4MB. Free memory was 41.9MB in the beginning and 41.6MB in the end (delta: 356.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:34:40,467 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 39.3MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 834.37ms. Allocated memory is still 73.4MB. Free memory was 48.5MB in the beginning and 38.9MB in the end (delta: 9.7MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.89ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 35.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.01ms. Allocated memory is still 73.4MB. Free memory was 35.8MB in the beginning and 33.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.13ms. Allocated memory is still 73.4MB. Free memory was 33.7MB in the beginning and 39.3MB in the end (delta: -5.6MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * TraceAbstraction took 518.27ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 41.9MB in the end (delta: -3.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.78ms. Allocated memory is still 73.4MB. Free memory was 41.9MB in the beginning and 41.6MB in the end (delta: 356.2kB). 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: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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] [L1572] 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) [L1572] 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] [L1573] CALL CWE191_Integer_Underflow__int_fgets_postdec_01_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] data-- VAL [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: 1564]: 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, 22 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=22occurred 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 20:34:40,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b09eb64-5b29-432c-b273-83142bcaa662/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