./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R --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 e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 --- 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-38b53e6 [2022-11-25 15:42:34,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:42:34,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:42:34,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:42:34,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:42:34,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:42:34,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:42:34,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:42:34,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:42:34,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:42:34,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:42:34,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:42:34,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:42:34,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:42:34,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:42:34,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:42:34,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:42:34,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:42:34,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:42:34,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:42:34,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:42:34,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:42:34,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:42:34,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:42:34,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:42:34,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:42:34,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:42:34,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:42:34,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:42:34,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:42:34,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:42:34,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:42:34,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:42:34,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:42:34,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:42:34,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:42:34,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:42:34,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:42:34,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:42:34,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:42:34,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:42:34,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 15:42:34,910 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:42:34,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:42:34,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:42:34,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:42:34,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:42:34,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:42:34,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:42:34,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:42:34,915 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:42:34,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:42:34,917 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:42:34,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:42:34,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:42:34,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:42:34,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:42:34,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:42:34,918 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 15:42:34,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:42:34,918 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:42:34,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:42:34,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:42:34,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:42:34,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:42:34,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:42:34,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:42:34,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:42:34,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:42:34,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:42:34,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:42:34,921 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:42:34,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:42:34,921 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:42:34,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:42:34,923 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_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2022-11-25 15:42:35,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:42:35,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:42:35,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:42:35,263 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:42:35,263 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:42:35,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-25 15:42:38,481 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:42:38,805 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:42:38,806 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-25 15:42:38,846 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/data/594316876/b990759fa0a9461c80d4e5e6b3cb4139/FLAG6e4836dfe [2022-11-25 15:42:38,863 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/data/594316876/b990759fa0a9461c80d4e5e6b3cb4139 [2022-11-25 15:42:38,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:42:38,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:42:38,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:42:38,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:42:38,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:42:38,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:42:38" (1/1) ... [2022-11-25 15:42:38,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267bf090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:38, skipping insertion in model container [2022-11-25 15:42:38,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:42:38" (1/1) ... [2022-11-25 15:42:38,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:42:38,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:42:39,359 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 15:42:39,869 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:42:39,875 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 15:42:39,879 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 15:42:39,884 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 15:42:39,887 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 15:42:39,915 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 15:42:39,920 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 15:42:39,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:42:39,934 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:42:39,978 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 15:42:40,062 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:42:40,064 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 15:42:40,065 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 15:42:40,068 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 15:42:40,068 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 15:42:40,080 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 15:42:40,092 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 15:42:40,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:42:40,250 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:42:40,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40 WrapperNode [2022-11-25 15:42:40,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:42:40,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:42:40,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:42:40,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:42:40,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,337 INFO L138 Inliner]: procedures = 500, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-11-25 15:42:40,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:42:40,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:42:40,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:42:40,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:42:40,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,404 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:42:40,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:42:40,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:42:40,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:42:40,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (1/1) ... [2022-11-25 15:42:40,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:42:40,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:42:40,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:42:40,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:42:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 15:42:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 15:42:40,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 15:42:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:42:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 15:42:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:42:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:42:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:42:40,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:42:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:42:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 15:42:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:42:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:42:40,673 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:42:40,675 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:42:40,812 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:42:40,818 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:42:40,818 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:42:40,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:42:40 BoogieIcfgContainer [2022-11-25 15:42:40,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:42:40,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:42:40,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:42:40,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:42:40,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:42:38" (1/3) ... [2022-11-25 15:42:40,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f10c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:42:40, skipping insertion in model container [2022-11-25 15:42:40,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:40" (2/3) ... [2022-11-25 15:42:40,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f10c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:42:40, skipping insertion in model container [2022-11-25 15:42:40,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:42:40" (3/3) ... [2022-11-25 15:42:40,829 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-25 15:42:40,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:42:40,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 15:42:40,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:42:40,954 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;@c9f5ab2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:42:40,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 15:42:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:42:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 15:42:40,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:42:40,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:42:40,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 15:42:40,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:42:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-11-25 15:42:40,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:42:40,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641225778] [2022-11-25 15:42:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:42:40,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:42:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:42:41,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:42:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:42:41,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:42:41,243 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:42:41,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 15:42:41,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 15:42:41,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:42:41,252 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 15:42:41,257 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:42:41,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:42:41 BoogieIcfgContainer [2022-11-25 15:42:41,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:42:41,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:42:41,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:42:41,295 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:42:41,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:42:40" (3/4) ... [2022-11-25 15:42:41,300 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 15:42:41,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:42:41,302 INFO L158 Benchmark]: Toolchain (without parser) took 2431.27ms. Allocated memory is still 188.7MB. Free memory was 145.8MB in the beginning and 99.8MB in the end (delta: 46.0MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2022-11-25 15:42:41,303 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:42:41,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1373.58ms. Allocated memory is still 188.7MB. Free memory was 145.4MB in the beginning and 136.2MB in the end (delta: 9.2MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. [2022-11-25 15:42:41,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.47ms. Allocated memory is still 188.7MB. Free memory was 136.2MB in the beginning and 132.8MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:42:41,307 INFO L158 Benchmark]: Boogie Preprocessor took 68.61ms. Allocated memory is still 188.7MB. Free memory was 132.8MB in the beginning and 131.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:42:41,308 INFO L158 Benchmark]: RCFGBuilder took 411.97ms. Allocated memory is still 188.7MB. Free memory was 131.3MB in the beginning and 118.5MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 15:42:41,309 INFO L158 Benchmark]: TraceAbstraction took 471.53ms. Allocated memory is still 188.7MB. Free memory was 117.3MB in the beginning and 99.8MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 15:42:41,309 INFO L158 Benchmark]: Witness Printer took 6.54ms. Allocated memory is still 188.7MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:42:41,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1373.58ms. Allocated memory is still 188.7MB. Free memory was 145.4MB in the beginning and 136.2MB in the end (delta: 9.2MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.47ms. Allocated memory is still 188.7MB. Free memory was 136.2MB in the beginning and 132.8MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.61ms. Allocated memory is still 188.7MB. Free memory was 132.8MB in the beginning and 131.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 411.97ms. Allocated memory is still 188.7MB. Free memory was 131.3MB in the beginning and 118.5MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 471.53ms. Allocated memory is still 188.7MB. Free memory was 117.3MB in the beginning and 99.8MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 6.54ms. Allocated memory is still 188.7MB. Free memory is still 99.8MB. 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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] [L1581] 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=1073741831, argc=1073741831, argv={1073741829:1073741832}, argv={1073741829:1073741832}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data - 1 VAL [data=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 [2022-11-25 15:42:41,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/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_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R --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 e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 --- 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-38b53e6 [2022-11-25 15:42:43,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:42:43,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:42:43,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:42:43,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:42:43,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:42:43,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:42:43,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:42:43,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:42:43,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:42:43,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:42:43,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:42:43,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:42:43,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:42:43,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:42:43,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:42:43,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:42:43,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:42:43,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:42:43,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:42:43,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:42:43,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:42:43,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:42:43,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:42:43,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:42:43,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:42:43,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:42:43,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:42:43,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:42:43,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:42:43,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:42:43,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:42:43,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:42:43,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:42:43,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:42:43,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:42:43,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:42:43,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:42:43,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:42:43,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:42:43,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:42:43,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 15:42:43,864 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:42:43,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:42:43,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:42:43,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:42:43,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:42:43,865 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:42:43,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:42:43,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:42:43,866 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:42:43,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:42:43,867 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:42:43,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:42:43,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:42:43,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:42:43,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:42:43,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:42:43,868 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 15:42:43,868 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 15:42:43,868 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 15:42:43,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:42:43,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:42:43,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:42:43,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:42:43,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:42:43,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:42:43,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:42:43,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:42:43,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:42:43,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:42:43,870 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 15:42:43,870 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 15:42:43,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:42:43,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:42:43,871 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:42:43,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:42:43,871 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 15:42:43,871 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_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2022-11-25 15:42:44,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:42:44,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:42:44,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:42:44,265 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:42:44,265 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:42:44,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-25 15:42:47,427 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:42:47,825 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:42:47,825 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-25 15:42:47,857 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/data/b872b622c/8c57fbbbdd494554b92fca03702fc70b/FLAG303939fbb [2022-11-25 15:42:47,872 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/data/b872b622c/8c57fbbbdd494554b92fca03702fc70b [2022-11-25 15:42:47,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:42:47,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:42:47,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:42:47,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:42:47,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:42:47,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:42:47" (1/1) ... [2022-11-25 15:42:47,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f6952c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:47, skipping insertion in model container [2022-11-25 15:42:47,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:42:47" (1/1) ... [2022-11-25 15:42:47,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:42:47,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:42:48,334 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 15:42:48,824 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:42:48,830 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 15:42:48,832 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 15:42:48,834 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 15:42:48,835 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 15:42:48,860 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 15:42:48,866 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 15:42:48,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:42:48,902 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:42:48,939 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 15:42:49,043 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 15:42:49,048 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 15:42:49,050 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 15:42:49,056 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 15:42:49,058 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 15:42:49,068 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 15:42:49,072 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 15:42:49,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:42:49,265 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:42:49,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49 WrapperNode [2022-11-25 15:42:49,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:42:49,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:42:49,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:42:49,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:42:49,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,336 INFO L138 Inliner]: procedures = 505, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-11-25 15:42:49,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:42:49,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:42:49,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:42:49,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:42:49,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,366 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:42:49,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:42:49,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:42:49,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:42:49,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (1/1) ... [2022-11-25 15:42:49,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:42:49,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:42:49,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:42:49,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:42:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 15:42:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 15:42:49,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 15:42:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:42:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 15:42:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:42:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:42:49,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:42:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 15:42:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:42:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 15:42:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 15:42:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 15:42:49,617 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:42:49,619 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:42:49,888 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:42:49,894 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:42:49,894 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:42:49,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:42:49 BoogieIcfgContainer [2022-11-25 15:42:49,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:42:49,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:42:49,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:42:49,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:42:49,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:42:47" (1/3) ... [2022-11-25 15:42:49,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3c0ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:42:49, skipping insertion in model container [2022-11-25 15:42:49,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:42:49" (2/3) ... [2022-11-25 15:42:49,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3c0ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:42:49, skipping insertion in model container [2022-11-25 15:42:49,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:42:49" (3/3) ... [2022-11-25 15:42:49,916 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2022-11-25 15:42:49,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:42:49,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 15:42:49,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:42:49,996 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;@15c2e359, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:42:49,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 15:42:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:42:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 15:42:50,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:42:50,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:42:50,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 15:42:50,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:42:50,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-11-25 15:42:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:42:50,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898259501] [2022-11-25 15:42:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:42:50,040 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 [2022-11-25 15:42:50,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:42:50,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:42:50,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:42:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:42:50,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:42:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:42:50,376 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 15:42:50,379 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:42:50,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 15:42:50,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 15:42:50,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:42:50,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:42:50,596 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 15:42:50,600 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:42:50,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:42:50 BoogieIcfgContainer [2022-11-25 15:42:50,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:42:50,637 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:42:50,637 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:42:50,637 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:42:50,638 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:42:49" (3/4) ... [2022-11-25 15:42:50,641 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 15:42:50,641 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:42:50,642 INFO L158 Benchmark]: Toolchain (without parser) took 2765.92ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 59.1MB in the beginning and 57.7MB in the end (delta: 1.4MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2022-11-25 15:42:50,643 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 62.0MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:42:50,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1389.02ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 58.8MB in the beginning and 64.3MB in the end (delta: -5.5MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2022-11-25 15:42:50,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.38ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 61.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:42:50,645 INFO L158 Benchmark]: Boogie Preprocessor took 34.29ms. Allocated memory is still 104.9MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:42:50,645 INFO L158 Benchmark]: RCFGBuilder took 524.26ms. Allocated memory is still 104.9MB. Free memory was 59.2MB in the beginning and 76.4MB in the end (delta: -17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 15:42:50,646 INFO L158 Benchmark]: TraceAbstraction took 737.37ms. Allocated memory is still 104.9MB. Free memory was 75.7MB in the beginning and 57.7MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 15:42:50,646 INFO L158 Benchmark]: Witness Printer took 4.51ms. Allocated memory is still 104.9MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:42:50,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 62.0MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1389.02ms. Allocated memory was 83.9MB in the beginning and 104.9MB in the end (delta: 21.0MB). Free memory was 58.8MB in the beginning and 64.3MB in the end (delta: -5.5MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.38ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 61.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.29ms. Allocated memory is still 104.9MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.26ms. Allocated memory is still 104.9MB. Free memory was 59.2MB in the beginning and 76.4MB in the end (delta: -17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 737.37ms. Allocated memory is still 104.9MB. Free memory was 75.7MB in the beginning and 57.7MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.51ms. Allocated memory is still 104.9MB. Free memory is still 57.7MB. 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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] [L1581] 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={18:13}, argv={18:13}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data - 1 VAL [data=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={12:0}] - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 [2022-11-25 15:42:50,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431f910-6890-4666-87c0-feca27521057/bin/uautomizer-ZsLfNo2U6R/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample