./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_65_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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 bf8231e6948cea3c1eb2b2224536c4a16967af2fed0da422b485c2c044760469 --- 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 20:03:18,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:03:18,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:03:19,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:03:19,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:03:19,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:03:19,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:03:19,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:03:19,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:03:19,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:03:19,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:03:19,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:03:19,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:03:19,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:03:19,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:03:19,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:03:19,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:03:19,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:03:19,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:03:19,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:03:19,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:03:19,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:03:19,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:03:19,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:03:19,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:03:19,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:03:19,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:03:19,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:03:19,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:03:19,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:03:19,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:03:19,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:03:19,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:03:19,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:03:19,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:03:19,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:03:19,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:03:19,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:03:19,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:03:19,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:03:19,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:03:19,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 20:03:19,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:03:19,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:03:19,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:03:19,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:03:19,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:03:19,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:03:19,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:03:19,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:03:19,059 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:03:19,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:03:19,060 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:03:19,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:03:19,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:03:19,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:03:19,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:03:19,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:03:19,066 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:03:19,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:03:19,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:03:19,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:03:19,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:03:19,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:03:19,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:03:19,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:03:19,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:03:19,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:03:19,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:03:19,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:03:19,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:03:19,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:03:19,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:03:19,069 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:03:19,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:03:19,069 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:03:19,069 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_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf8231e6948cea3c1eb2b2224536c4a16967af2fed0da422b485c2c044760469 [2022-12-13 20:03:19,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:03:19,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:03:19,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:03:19,281 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:03:19,282 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:03:19,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_65_bad.i [2022-12-13 20:03:21,895 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:03:22,116 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:03:22,116 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_65_bad.i [2022-12-13 20:03:22,130 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/data/d0ebcd302/ad4baaad44da4344b593e569fbcf5199/FLAG3cc5b8bcb [2022-12-13 20:03:22,141 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/data/d0ebcd302/ad4baaad44da4344b593e569fbcf5199 [2022-12-13 20:03:22,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:03:22,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:03:22,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:03:22,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:03:22,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:03:22,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:03:22" (1/1) ... [2022-12-13 20:03:22,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f5e817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:22, skipping insertion in model container [2022-12-13 20:03:22,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:03:22" (1/1) ... [2022-12-13 20:03:22,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:03:22,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:03:22,440 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:03:22,748 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 20:03:22,752 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:03:22,754 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:03:22,757 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:03:22,757 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:03:22,777 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 20:03:22,783 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 20:03:22,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:03:22,796 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:03:22,810 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:03:22,852 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 20:03:22,854 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:03:22,855 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:03:22,857 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:03:22,857 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:03:22,860 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 20:03:22,861 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 20:03:22,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:03:23,016 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:03:23,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23 WrapperNode [2022-12-13 20:03:23,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:03:23,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:03:23,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:03:23,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:03:23,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,066 INFO L138 Inliner]: procedures = 502, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 57 [2022-12-13 20:03:23,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:03:23,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:03:23,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:03:23,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:03:23,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,089 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:03:23,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:03:23,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:03:23,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:03:23,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (1/1) ... [2022-12-13 20:03:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:03:23,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:23,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:03:23,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:03:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 20:03:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 20:03:23,156 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 20:03:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:03:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 20:03:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:03:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:03:23,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:03:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:03:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 20:03:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:03:23,282 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:03:23,284 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:03:23,379 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:03:23,383 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:03:23,384 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:03:23,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:03:23 BoogieIcfgContainer [2022-12-13 20:03:23,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:03:23,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:03:23,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:03:23,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:03:23,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:03:22" (1/3) ... [2022-12-13 20:03:23,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d8f0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:03:23, skipping insertion in model container [2022-12-13 20:03:23,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:23" (2/3) ... [2022-12-13 20:03:23,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d8f0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:03:23, skipping insertion in model container [2022-12-13 20:03:23,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:03:23" (3/3) ... [2022-12-13 20:03:23,393 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_65_bad.i [2022-12-13 20:03:23,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:03:23,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:03:23,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:03:23,449 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;@480ed396, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:03:23,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:03:23,454 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 20:03:23,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 20:03:23,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:23,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:23,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 20:03:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-12-13 20:03:23,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:03:23,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009926578] [2022-12-13 20:03:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:03:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:03:23,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:03:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:03:23,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:03:23,640 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:03:23,641 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 20:03:23,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 20:03:23,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:03:23,647 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 20:03:23,651 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:03:23,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:03:23 BoogieIcfgContainer [2022-12-13 20:03:23,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:03:23,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:03:23,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:03:23,673 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:03:23,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:03:23" (3/4) ... [2022-12-13 20:03:23,676 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:03:23,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:03:23,677 INFO L158 Benchmark]: Toolchain (without parser) took 1533.11ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 96.8MB in the beginning and 82.5MB in the end (delta: 14.4MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2022-12-13 20:03:23,677 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:03:23,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 872.49ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 96.8MB in the beginning and 117.9MB in the end (delta: -21.1MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. [2022-12-13 20:03:23,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.40ms. Allocated memory is still 161.5MB. Free memory was 117.9MB in the beginning and 114.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:03:23,679 INFO L158 Benchmark]: Boogie Preprocessor took 25.44ms. Allocated memory is still 161.5MB. Free memory was 114.9MB in the beginning and 112.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:03:23,679 INFO L158 Benchmark]: RCFGBuilder took 291.57ms. Allocated memory is still 161.5MB. Free memory was 112.8MB in the beginning and 100.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:03:23,680 INFO L158 Benchmark]: TraceAbstraction took 284.79ms. Allocated memory is still 161.5MB. Free memory was 99.3MB in the beginning and 82.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 20:03:23,680 INFO L158 Benchmark]: Witness Printer took 3.14ms. Allocated memory is still 161.5MB. Free memory was 82.5MB in the beginning and 82.5MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:03:23,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 872.49ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 96.8MB in the beginning and 117.9MB in the end (delta: -21.1MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.40ms. Allocated memory is still 161.5MB. Free memory was 117.9MB in the beginning and 114.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.44ms. Allocated memory is still 161.5MB. Free memory was 114.9MB in the beginning and 112.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.57ms. Allocated memory is still 161.5MB. Free memory was 112.8MB in the beginning and 100.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 284.79ms. Allocated memory is still 161.5MB. Free memory was 99.3MB in the beginning and 82.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.14ms. Allocated memory is still 161.5MB. Free memory was 82.5MB in the beginning and 82.5MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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] [L1570] 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) [L1570] RET printLine("Calling bad()...") VAL [\old(argc)=1073741829, argc=1073741829, argv={1073741828:1073741830}, argv={1073741828:1073741830}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_fgets_sub_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_sub_65b_badSink; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1565] CALL funcPtr(data) [L1578] data - 1 VAL [\old(data)=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1578]: 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 20:03:23,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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 bf8231e6948cea3c1eb2b2224536c4a16967af2fed0da422b485c2c044760469 --- 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 20:03:25,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:03:25,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:03:25,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:03:25,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:03:25,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:03:25,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:03:25,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:03:25,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:03:25,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:03:25,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:03:25,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:03:25,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:03:25,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:03:25,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:03:25,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:03:25,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:03:25,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:03:25,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:03:25,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:03:25,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:03:25,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:03:25,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:03:25,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:03:25,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:03:25,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:03:25,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:03:25,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:03:25,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:03:25,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:03:25,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:03:25,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:03:25,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:03:25,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:03:25,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:03:25,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:03:25,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:03:25,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:03:25,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:03:25,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:03:25,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:03:25,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 20:03:25,544 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:03:25,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:03:25,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:03:25,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:03:25,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:03:25,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:03:25,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:03:25,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:03:25,547 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:03:25,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:03:25,547 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:03:25,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:03:25,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:03:25,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:03:25,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:03:25,548 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 20:03:25,548 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 20:03:25,548 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:03:25,549 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 20:03:25,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:03:25,549 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:03:25,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:03:25,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:03:25,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:03:25,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:03:25,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:03:25,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:03:25,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:03:25,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:03:25,551 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 20:03:25,551 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 20:03:25,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:03:25,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:03:25,551 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:03:25,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:03:25,557 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 20:03:25,557 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:03:25,557 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_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf8231e6948cea3c1eb2b2224536c4a16967af2fed0da422b485c2c044760469 [2022-12-13 20:03:25,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:03:25,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:03:25,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:03:25,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:03:25,840 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:03:25,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_65_bad.i [2022-12-13 20:03:28,497 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:03:28,780 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:03:28,781 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_65_bad.i [2022-12-13 20:03:28,798 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/data/4508ee936/4c72fb0a44794b21aad1d045faa82b99/FLAGd0ddd8069 [2022-12-13 20:03:28,812 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/data/4508ee936/4c72fb0a44794b21aad1d045faa82b99 [2022-12-13 20:03:28,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:03:28,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:03:28,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:03:28,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:03:28,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:03:28,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:03:28" (1/1) ... [2022-12-13 20:03:28,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f801da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:28, skipping insertion in model container [2022-12-13 20:03:28,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:03:28" (1/1) ... [2022-12-13 20:03:28,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:03:28,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:03:29,104 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:03:29,445 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 20:03:29,450 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:03:29,451 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:03:29,453 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:03:29,454 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:03:29,472 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 20:03:29,476 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 20:03:29,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:03:29,490 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:03:29,509 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 20:03:29,558 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 20:03:29,560 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:03:29,561 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 20:03:29,563 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:03:29,564 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 20:03:29,568 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 20:03:29,569 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 20:03:29,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:03:29,687 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:03:29,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29 WrapperNode [2022-12-13 20:03:29,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:03:29,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:03:29,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:03:29,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:03:29,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,742 INFO L138 Inliner]: procedures = 507, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 56 [2022-12-13 20:03:29,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:03:29,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:03:29,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:03:29,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:03:29,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,766 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:03:29,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:03:29,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:03:29,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:03:29,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (1/1) ... [2022-12-13 20:03:29,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:03:29,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:03:29,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:03:29,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 20:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 20:03:29,827 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 20:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 20:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:03:29,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 20:03:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 20:03:29,951 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:03:29,952 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:03:30,073 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:03:30,078 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:03:30,078 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:03:30,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:03:30 BoogieIcfgContainer [2022-12-13 20:03:30,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:03:30,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:03:30,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:03:30,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:03:30,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:03:28" (1/3) ... [2022-12-13 20:03:30,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f2ee90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:03:30, skipping insertion in model container [2022-12-13 20:03:30,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:03:29" (2/3) ... [2022-12-13 20:03:30,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f2ee90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:03:30, skipping insertion in model container [2022-12-13 20:03:30,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:03:30" (3/3) ... [2022-12-13 20:03:30,085 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_65_bad.i [2022-12-13 20:03:30,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:03:30,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 20:03:30,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:03:30,135 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;@4ceaac84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:03:30,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 20:03:30,139 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 20:03:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 20:03:30,144 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:03:30,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:03:30,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 20:03:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:03:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times [2022-12-13 20:03:30,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 20:03:30,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530603180] [2022-12-13 20:03:30,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:03:30,158 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 20:03:30,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 20:03:30,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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 20:03:30,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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 20:03:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:03:30,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:03:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:03:30,355 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 20:03:30,357 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:03:30,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 20:03:30,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 20:03:30,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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 20:03:30,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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 20:03:30,574 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 20:03:30,586 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:03:30,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:03:30 BoogieIcfgContainer [2022-12-13 20:03:30,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:03:30,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:03:30,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:03:30,644 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:03:30,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:03:30" (3/4) ... [2022-12-13 20:03:30,654 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 20:03:30,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:03:30,657 INFO L158 Benchmark]: Toolchain (without parser) took 1839.84ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 56.2MB in the beginning and 62.8MB in the end (delta: -6.6MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-12-13 20:03:30,659 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory was 31.3MB in the beginning and 31.3MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:03:30,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 871.03ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 56.0MB in the beginning and 46.6MB in the end (delta: 9.4MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2022-12-13 20:03:30,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.71ms. Allocated memory is still 98.6MB. Free memory was 46.6MB in the beginning and 70.5MB in the end (delta: -23.9MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2022-12-13 20:03:30,664 INFO L158 Benchmark]: Boogie Preprocessor took 28.84ms. Allocated memory is still 98.6MB. Free memory was 70.5MB in the beginning and 68.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:03:30,665 INFO L158 Benchmark]: RCFGBuilder took 307.45ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 54.2MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:03:30,666 INFO L158 Benchmark]: TraceAbstraction took 561.33ms. Allocated memory is still 98.6MB. Free memory was 53.2MB in the beginning and 63.4MB in the end (delta: -10.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:03:30,668 INFO L158 Benchmark]: Witness Printer took 10.73ms. Allocated memory is still 98.6MB. Free memory was 63.4MB in the beginning and 62.8MB in the end (delta: 570.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:03:30,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory was 31.3MB in the beginning and 31.3MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 871.03ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 56.0MB in the beginning and 46.6MB in the end (delta: 9.4MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.71ms. Allocated memory is still 98.6MB. Free memory was 46.6MB in the beginning and 70.5MB in the end (delta: -23.9MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.84ms. Allocated memory is still 98.6MB. Free memory was 70.5MB in the beginning and 68.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 307.45ms. Allocated memory is still 98.6MB. Free memory was 68.4MB in the beginning and 54.2MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 561.33ms. Allocated memory is still 98.6MB. Free memory was 53.2MB in the beginning and 63.4MB in the end (delta: -10.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 10.73ms. Allocated memory is still 98.6MB. Free memory was 63.4MB in the beginning and 62.8MB in the end (delta: 570.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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] [L1570] 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) [L1570] 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] [L1571] CALL CWE191_Integer_Underflow__int_fgets_sub_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_sub_65b_badSink; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1565] CALL funcPtr(data) [L1578] data - 1 VAL [\old(data)=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1578]: 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: 0.5s, 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 20:03:30,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e1e0b37-485c-4d5d-9136-bc007009f5cb/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