./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_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_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/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_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/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_6ffe6926-575a-4b44-bba6-2ae143787972/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 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:01:48,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:01:48,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:01:48,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:01:48,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:01:48,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:01:48,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:01:48,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:01:48,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:01:48,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:01:48,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:01:48,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:01:48,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:01:48,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:01:48,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:01:48,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:01:48,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:01:48,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:01:48,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:01:48,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:01:48,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:01:48,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:01:48,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:01:48,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:01:48,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:01:48,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:01:48,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:01:48,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:01:48,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:01:48,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:01:48,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:01:48,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:01:48,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:01:48,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:01:48,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:01:48,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:01:48,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:01:48,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:01:48,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:01:48,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:01:48,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:01:48,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 19:01:48,491 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:01:48,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:01:48,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:01:48,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:01:48,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:01:48,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:01:48,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:01:48,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:01:48,493 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:01:48,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:01:48,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:01:48,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:01:48,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:01:48,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:01:48,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:01:48,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:01:48,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:01:48,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:01:48,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:01:48,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:01:48,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:01:48,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:01:48,495 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:01:48,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:01:48,496 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:01:48,496 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_6ffe6926-575a-4b44-bba6-2ae143787972/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f [2022-12-13 19:01:48,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:01:48,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:01:48,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:01:48,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:01:48,714 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:01:48,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2022-12-13 19:01:51,293 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:01:51,544 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:01:51,545 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2022-12-13 19:01:51,558 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/data/5ccd0bfe8/dc7413ea35c44aeb8d388c9516a6d89f/FLAG2ca9ae8fe [2022-12-13 19:01:51,842 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/data/5ccd0bfe8/dc7413ea35c44aeb8d388c9516a6d89f [2022-12-13 19:01:51,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:01:51,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:01:51,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:01:51,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:01:51,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:01:51,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:01:51" (1/1) ... [2022-12-13 19:01:51,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5326365d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:51, skipping insertion in model container [2022-12-13 19:01:51,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:01:51" (1/1) ... [2022-12-13 19:01:51,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:01:51,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:01:52,108 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:01:52,408 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:01:52,413 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:01:52,414 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:01:52,416 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:01:52,416 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:01:52,432 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:01:52,434 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:01:52,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:01:52,445 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:01:52,459 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:01:52,491 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:01:52,492 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:01:52,493 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:01:52,494 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:01:52,495 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:01:52,498 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:01:52,499 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:01:52,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:01:52,582 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:01:52,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52 WrapperNode [2022-12-13 19:01:52,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:01:52,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:01:52,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:01:52,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:01:52,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,619 INFO L138 Inliner]: procedures = 502, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 58 [2022-12-13 19:01:52,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:01:52,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:01:52,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:01:52,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:01:52,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,635 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:01:52,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:01:52,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:01:52,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:01:52,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (1/1) ... [2022-12-13 19:01:52,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:01:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:01:52,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:01:52,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:01:52,687 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 19:01:52,687 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 19:01:52,687 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 19:01:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:01:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 19:01:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:01:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:01:52,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:01:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:01:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 19:01:52,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:01:52,798 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:01:52,800 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:01:52,891 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:01:52,895 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:01:52,896 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:01:52,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:01:52 BoogieIcfgContainer [2022-12-13 19:01:52,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:01:52,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:01:52,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:01:52,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:01:52,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:01:51" (1/3) ... [2022-12-13 19:01:52,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cabb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:01:52, skipping insertion in model container [2022-12-13 19:01:52,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:52" (2/3) ... [2022-12-13 19:01:52,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cabb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:01:52, skipping insertion in model container [2022-12-13 19:01:52,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:01:52" (3/3) ... [2022-12-13 19:01:52,903 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2022-12-13 19:01:52,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:01:52,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:01:52,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:01:52,954 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;@1a01790b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:01:52,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 19:01:52,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:01:52,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 19:01:52,962 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:01:52,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:01:52,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:01:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:01:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-12-13 19:01:52,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:01:52,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843721196] [2022-12-13 19:01:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:01:52,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:01:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:01:53,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:01:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:01:53,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:01:53,112 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:01:53,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 19:01:53,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 19:01:53,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:01:53,117 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 19:01:53,120 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:01:53,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:01:53 BoogieIcfgContainer [2022-12-13 19:01:53,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:01:53,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:01:53,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:01:53,135 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:01:53,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:01:52" (3/4) ... [2022-12-13 19:01:53,138 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:01:53,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:01:53,139 INFO L158 Benchmark]: Toolchain (without parser) took 1293.71ms. Allocated memory is still 172.0MB. Free memory was 139.5MB in the beginning and 136.3MB in the end (delta: 3.2MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2022-12-13 19:01:53,139 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 102.8MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:01:53,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 737.14ms. Allocated memory is still 172.0MB. Free memory was 139.5MB in the beginning and 77.3MB in the end (delta: 62.2MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-12-13 19:01:53,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.62ms. Allocated memory is still 172.0MB. Free memory was 76.6MB in the beginning and 73.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:01:53,140 INFO L158 Benchmark]: Boogie Preprocessor took 17.13ms. Allocated memory is still 172.0MB. Free memory was 73.8MB in the beginning and 72.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:01:53,140 INFO L158 Benchmark]: RCFGBuilder took 259.01ms. Allocated memory is still 172.0MB. Free memory was 72.4MB in the beginning and 59.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 19:01:53,141 INFO L158 Benchmark]: TraceAbstraction took 236.03ms. Allocated memory is still 172.0MB. Free memory was 58.4MB in the beginning and 137.4MB in the end (delta: -78.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2022-12-13 19:01:53,141 INFO L158 Benchmark]: Witness Printer took 2.85ms. Allocated memory is still 172.0MB. Free memory was 137.4MB in the beginning and 136.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:01:53,143 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 102.8MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 737.14ms. Allocated memory is still 172.0MB. Free memory was 139.5MB in the beginning and 77.3MB in the end (delta: 62.2MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.62ms. Allocated memory is still 172.0MB. Free memory was 76.6MB in the beginning and 73.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.13ms. Allocated memory is still 172.0MB. Free memory was 73.8MB in the beginning and 72.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 259.01ms. Allocated memory is still 172.0MB. Free memory was 72.4MB in the beginning and 59.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 236.03ms. Allocated memory is still 172.0MB. Free memory was 58.4MB in the beginning and 137.4MB in the end (delta: -78.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 2.85ms. Allocated memory is still 172.0MB. Free memory was 137.4MB in the beginning and 136.3MB 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: 1582]: 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_predec_52_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_52c_badSink(data) [L1582] --data VAL [\old(data)=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 19:01:53,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/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_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/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_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/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_6ffe6926-575a-4b44-bba6-2ae143787972/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 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:01:54,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:01:54,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:01:54,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:01:54,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:01:54,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:01:54,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:01:54,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:01:54,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:01:54,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:01:54,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:01:54,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:01:54,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:01:54,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:01:54,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:01:54,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:01:54,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:01:54,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:01:54,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:01:54,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:01:54,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:01:54,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:01:54,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:01:54,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:01:54,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:01:54,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:01:54,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:01:54,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:01:54,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:01:54,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:01:54,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:01:54,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:01:54,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:01:54,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:01:54,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:01:54,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:01:54,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:01:54,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:01:54,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:01:54,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:01:54,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:01:54,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 19:01:54,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:01:54,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:01:54,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:01:54,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:01:54,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:01:54,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:01:54,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:01:54,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:01:54,904 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:01:54,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:01:54,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:01:54,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:01:54,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:01:54,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:01:54,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:01:54,905 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:01:54,905 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 19:01:54,905 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:01:54,906 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 19:01:54,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:01:54,906 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:01:54,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:01:54,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:01:54,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:01:54,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:01:54,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:01:54,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:01:54,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:01:54,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:01:54,907 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 19:01:54,907 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 19:01:54,907 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:01:54,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:01:54,907 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:01:54,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:01:54,913 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 19:01:54,914 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:01:54,914 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_6ffe6926-575a-4b44-bba6-2ae143787972/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f [2022-12-13 19:01:55,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:01:55,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:01:55,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:01:55,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:01:55,158 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:01:55,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2022-12-13 19:01:57,660 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:01:57,894 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:01:57,894 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2022-12-13 19:01:57,908 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/data/8617c5902/aaa7a5c4a8524ece9fb3c8bd4fcea976/FLAGa7500c3cb [2022-12-13 19:01:58,210 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/data/8617c5902/aaa7a5c4a8524ece9fb3c8bd4fcea976 [2022-12-13 19:01:58,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:01:58,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:01:58,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:01:58,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:01:58,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:01:58,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:01:58" (1/1) ... [2022-12-13 19:01:58,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494be487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:58, skipping insertion in model container [2022-12-13 19:01:58,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:01:58" (1/1) ... [2022-12-13 19:01:58,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:01:58,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:01:58,482 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:01:58,835 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:01:58,839 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:01:58,840 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:01:58,842 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:01:58,843 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:01:58,860 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:01:58,862 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:01:58,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:01:58,879 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:01:58,896 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:01:58,931 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:01:58,932 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:01:58,933 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:01:58,935 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:01:58,935 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:01:58,938 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:01:58,939 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:01:58,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:01:59,034 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:01:59,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59 WrapperNode [2022-12-13 19:01:59,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:01:59,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:01:59,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:01:59,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:01:59,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,073 INFO L138 Inliner]: procedures = 507, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 57 [2022-12-13 19:01:59,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:01:59,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:01:59,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:01:59,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:01:59,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,091 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:01:59,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:01:59,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:01:59,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:01:59,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (1/1) ... [2022-12-13 19:01:59,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:01:59,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:01:59,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:01:59,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:01:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 19:01:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 19:01:59,145 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 19:01:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:01:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 19:01:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:01:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:01:59,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:01:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:01:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 19:01:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 19:01:59,264 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:01:59,266 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:01:59,396 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:01:59,400 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:01:59,400 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:01:59,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:01:59 BoogieIcfgContainer [2022-12-13 19:01:59,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:01:59,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:01:59,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:01:59,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:01:59,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:01:58" (1/3) ... [2022-12-13 19:01:59,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e393cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:01:59, skipping insertion in model container [2022-12-13 19:01:59,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:01:59" (2/3) ... [2022-12-13 19:01:59,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e393cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:01:59, skipping insertion in model container [2022-12-13 19:01:59,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:01:59" (3/3) ... [2022-12-13 19:01:59,408 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2022-12-13 19:01:59,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:01:59,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:01:59,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:01:59,462 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;@29883ff6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:01:59,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 19:01:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:01:59,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 19:01:59,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:01:59,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:01:59,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:01:59,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:01:59,476 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-12-13 19:01:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:01:59,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120900621] [2022-12-13 19:01:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:01:59,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:01:59,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:01:59,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:01:59,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 19:01:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:01:59,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:01:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:01:59,684 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 19:01:59,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:01:59,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 19:01:59,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 19:01:59,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:01:59,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:01:59,896 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 19:01:59,900 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:01:59,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:01:59 BoogieIcfgContainer [2022-12-13 19:01:59,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:01:59,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:01:59,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:01:59,925 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:01:59,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:01:59" (3/4) ... [2022-12-13 19:01:59,929 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:01:59,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:01:59,930 INFO L158 Benchmark]: Toolchain (without parser) took 1717.72ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 65.9MB in the beginning and 61.7MB in the end (delta: 4.2MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-12-13 19:01:59,931 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 65.0MB. Free memory was 43.4MB in the beginning and 43.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:01:59,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 822.18ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 52.1MB in the end (delta: 13.8MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2022-12-13 19:01:59,932 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.78ms. Allocated memory is still 92.3MB. Free memory was 52.1MB in the beginning and 49.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 19:01:59,933 INFO L158 Benchmark]: Boogie Preprocessor took 21.07ms. Allocated memory is still 92.3MB. Free memory was 49.3MB in the beginning and 47.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:01:59,933 INFO L158 Benchmark]: RCFGBuilder took 306.70ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 47.2MB in the beginning and 79.6MB in the end (delta: -32.5MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-12-13 19:01:59,934 INFO L158 Benchmark]: TraceAbstraction took 520.26ms. Allocated memory is still 111.1MB. Free memory was 79.0MB in the beginning and 61.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 19:01:59,935 INFO L158 Benchmark]: Witness Printer took 4.69ms. Allocated memory is still 111.1MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:01:59,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 65.0MB. Free memory was 43.4MB in the beginning and 43.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 822.18ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 52.1MB in the end (delta: 13.8MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.78ms. Allocated memory is still 92.3MB. Free memory was 52.1MB in the beginning and 49.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.07ms. Allocated memory is still 92.3MB. Free memory was 49.3MB in the beginning and 47.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 306.70ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 47.2MB in the beginning and 79.6MB in the end (delta: -32.5MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 520.26ms. Allocated memory is still 111.1MB. Free memory was 79.0MB in the beginning and 61.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.69ms. Allocated memory is still 111.1MB. Free memory is still 61.7MB. 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_52_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_52c_badSink(data) [L1582] --data VAL [\old(data)=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 19:01:59,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ffe6926-575a-4b44-bba6-2ae143787972/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