./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_04_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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_46a672ef-5372-4720-85f7-8b62afb47803/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 f3fb3f6e6d711c2aeec1728beef1730692915d671b5b810110bdf7dced54a097 --- 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 22:17:48,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:17:48,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:17:48,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:17:48,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:17:48,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:17:48,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:17:48,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:17:48,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:17:48,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:17:48,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:17:48,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:17:48,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:17:48,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:17:48,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:17:48,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:17:48,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:17:48,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:17:48,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:17:48,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:17:48,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:17:48,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:17:48,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:17:48,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:17:48,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:17:48,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:17:48,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:17:48,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:17:48,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:17:48,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:17:48,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:17:48,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:17:48,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:17:48,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:17:48,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:17:48,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:17:48,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:17:48,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:17:48,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:17:48,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:17:48,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:17:48,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 22:17:48,993 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:17:48,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:17:49,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:17:49,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:17:49,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:17:49,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:17:49,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:17:49,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:17:49,002 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:17:49,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:17:49,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:17:49,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:17:49,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:17:49,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:17:49,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:17:49,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:17:49,003 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 22:17:49,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:17:49,004 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:17:49,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:17:49,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:17:49,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:17:49,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:17:49,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:17:49,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:17:49,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:17:49,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:17:49,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:17:49,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:17:49,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:17:49,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:17:49,006 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:17:49,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:17:49,006 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:17:49,006 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_46a672ef-5372-4720-85f7-8b62afb47803/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3fb3f6e6d711c2aeec1728beef1730692915d671b5b810110bdf7dced54a097 [2022-12-13 22:17:49,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:17:49,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:17:49,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:17:49,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:17:49,211 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:17:49,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_04_bad.i [2022-12-13 22:17:51,826 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:17:52,067 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:17:52,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_04_bad.i [2022-12-13 22:17:52,080 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/data/5d3e9bfbb/e644735375254306983043155cd0965c/FLAG400a36684 [2022-12-13 22:17:52,090 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/data/5d3e9bfbb/e644735375254306983043155cd0965c [2022-12-13 22:17:52,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:17:52,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:17:52,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:17:52,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:17:52,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:17:52,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3b4780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52, skipping insertion in model container [2022-12-13 22:17:52,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:17:52,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:17:52,400 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 22:17:52,684 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:17:52,688 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 22:17:52,690 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 22:17:52,691 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 22:17:52,692 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 22:17:52,706 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 22:17:52,710 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 22:17:52,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:17:52,718 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:17:52,731 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 22:17:52,760 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:17:52,761 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 22:17:52,762 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 22:17:52,763 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 22:17:52,764 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 22:17:52,767 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 22:17:52,768 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 22:17:52,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:17:52,846 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:17:52,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52 WrapperNode [2022-12-13 22:17:52,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:17:52,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:17:52,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:17:52,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:17:52,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,898 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-13 22:17:52,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:17:52,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:17:52,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:17:52,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:17:52,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,920 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:17:52,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:17:52,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:17:52,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:17:52,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (1/1) ... [2022-12-13 22:17:52,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:17:52,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:17:52,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:17:52,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:17:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 22:17:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 22:17:52,985 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 22:17:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:17:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 22:17:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:17:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:17:52,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:17:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:17:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 22:17:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:17:53,095 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:17:53,097 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:17:53,209 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:17:53,215 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:17:53,216 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 22:17:53,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:17:53 BoogieIcfgContainer [2022-12-13 22:17:53,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:17:53,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:17:53,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:17:53,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:17:53,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:17:52" (1/3) ... [2022-12-13 22:17:53,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e413613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:17:53, skipping insertion in model container [2022-12-13 22:17:53,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:52" (2/3) ... [2022-12-13 22:17:53,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e413613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:17:53, skipping insertion in model container [2022-12-13 22:17:53,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:17:53" (3/3) ... [2022-12-13 22:17:53,226 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_04_bad.i [2022-12-13 22:17:53,246 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:17:53,246 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 22:17:53,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:17:53,300 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;@4bb0cb8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:17:53,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 22:17:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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 22:17:53,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:17:53,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:17:53,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:17:53,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 22:17:53,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:17:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-13 22:17:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:17:53,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636373521] [2022-12-13 22:17:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:17:53,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:17:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:17:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:17:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:17:53,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:17:53,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636373521] [2022-12-13 22:17:53,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636373521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:17:53,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:17:53,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:17:53,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354459367] [2022-12-13 22:17:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:17:53,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:17:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:17:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:17:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:17:53,607 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 22:17:53,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:17:53,634 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-12-13 22:17:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:17:53,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-13 22:17:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:17:53,643 INFO L225 Difference]: With dead ends: 40 [2022-12-13 22:17:53,644 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 22:17:53,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:17:53,649 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:17:53,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:17:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 22:17:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-13 22:17:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:17:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-12-13 22:17:53,685 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-12-13 22:17:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:17:53,686 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-12-13 22:17:53,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 22:17:53,687 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-12-13 22:17:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 22:17:53,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:17:53,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:17:53,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:17:53,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 22:17:53,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:17:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-13 22:17:53,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:17:53,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592735788] [2022-12-13 22:17:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:17:53,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:17:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:17:53,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 22:17:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:17:53,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 22:17:53,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 22:17:53,761 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 22:17:53,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 22:17:53,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:17:53,767 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 22:17:53,771 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:17:53,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:17:53 BoogieIcfgContainer [2022-12-13 22:17:53,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:17:53,796 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:17:53,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:17:53,796 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:17:53,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:17:53" (3/4) ... [2022-12-13 22:17:53,800 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 22:17:53,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:17:53,800 INFO L158 Benchmark]: Toolchain (without parser) took 1707.02ms. Allocated memory is still 151.0MB. Free memory was 112.4MB in the beginning and 70.4MB in the end (delta: 42.0MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2022-12-13 22:17:53,801 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:17:53,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 752.89ms. Allocated memory is still 151.0MB. Free memory was 112.4MB in the beginning and 50.0MB in the end (delta: 62.4MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-12-13 22:17:53,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.02ms. Allocated memory is still 151.0MB. Free memory was 50.0MB in the beginning and 119.8MB in the end (delta: -69.7MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2022-12-13 22:17:53,802 INFO L158 Benchmark]: Boogie Preprocessor took 24.22ms. Allocated memory is still 151.0MB. Free memory was 119.8MB in the beginning and 117.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:17:53,803 INFO L158 Benchmark]: RCFGBuilder took 293.76ms. Allocated memory is still 151.0MB. Free memory was 117.8MB in the beginning and 105.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 22:17:53,803 INFO L158 Benchmark]: TraceAbstraction took 575.30ms. Allocated memory is still 151.0MB. Free memory was 104.2MB in the beginning and 70.8MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-13 22:17:53,803 INFO L158 Benchmark]: Witness Printer took 4.03ms. Allocated memory is still 151.0MB. Free memory was 70.8MB in the beginning and 70.4MB in the end (delta: 471.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:17:53,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 752.89ms. Allocated memory is still 151.0MB. Free memory was 112.4MB in the beginning and 50.0MB in the end (delta: 62.4MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.02ms. Allocated memory is still 151.0MB. Free memory was 50.0MB in the beginning and 119.8MB in the end (delta: -69.7MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.22ms. Allocated memory is still 151.0MB. Free memory was 119.8MB in the beginning and 117.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.76ms. Allocated memory is still 151.0MB. Free memory was 117.8MB in the beginning and 105.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 575.30ms. Allocated memory is still 151.0MB. Free memory was 104.2MB in the beginning and 70.8MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 4.03ms. Allocated memory is still 151.0MB. Free memory was 70.8MB in the beginning and 70.4MB in the end (delta: 471.5kB). 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: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1579] 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}, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741827:1073741831}, argv={1073741827:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_sub_04_bad() [L1552] int data; [L1553] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1568] COND TRUE \read(STATIC_CONST_TRUE) VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1571] data - 1 VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] - UnprovableResult [Line: 1571]: 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: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 25 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 22:17:53,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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_46a672ef-5372-4720-85f7-8b62afb47803/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 f3fb3f6e6d711c2aeec1728beef1730692915d671b5b810110bdf7dced54a097 --- 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 22:17:55,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:17:55,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:17:55,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:17:55,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:17:55,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:17:55,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:17:55,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:17:55,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:17:55,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:17:55,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:17:55,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:17:55,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:17:55,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:17:55,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:17:55,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:17:55,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:17:55,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:17:55,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:17:55,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:17:55,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:17:55,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:17:55,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:17:55,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:17:55,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:17:55,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:17:55,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:17:55,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:17:55,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:17:55,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:17:55,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:17:55,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:17:55,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:17:55,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:17:55,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:17:55,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:17:55,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:17:55,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:17:55,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:17:55,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:17:55,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:17:55,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 22:17:55,566 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:17:55,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:17:55,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:17:55,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:17:55,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:17:55,568 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:17:55,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:17:55,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:17:55,569 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:17:55,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:17:55,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:17:55,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:17:55,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:17:55,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:17:55,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:17:55,571 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 22:17:55,571 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 22:17:55,571 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 22:17:55,571 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 22:17:55,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:17:55,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:17:55,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:17:55,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:17:55,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:17:55,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:17:55,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:17:55,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:17:55,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:17:55,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:17:55,573 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 22:17:55,574 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 22:17:55,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:17:55,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:17:55,574 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:17:55,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:17:55,574 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 22:17:55,575 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:17:55,575 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_46a672ef-5372-4720-85f7-8b62afb47803/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3fb3f6e6d711c2aeec1728beef1730692915d671b5b810110bdf7dced54a097 [2022-12-13 22:17:55,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:17:55,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:17:55,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:17:55,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:17:55,844 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:17:55,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_04_bad.i [2022-12-13 22:17:58,508 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:17:58,775 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:17:58,775 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_04_bad.i [2022-12-13 22:17:58,793 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/data/ba1acd2fa/85b211d4f069400ea933937ef8a0de77/FLAG646be2d1b [2022-12-13 22:17:58,807 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/data/ba1acd2fa/85b211d4f069400ea933937ef8a0de77 [2022-12-13 22:17:58,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:17:58,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:17:58,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:17:58,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:17:58,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:17:58,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:17:58" (1/1) ... [2022-12-13 22:17:58,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d900811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:58, skipping insertion in model container [2022-12-13 22:17:58,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:17:58" (1/1) ... [2022-12-13 22:17:58,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:17:58,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:17:59,150 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 22:17:59,448 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:17:59,452 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 22:17:59,453 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 22:17:59,455 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 22:17:59,455 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 22:17:59,469 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 22:17:59,473 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 22:17:59,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:17:59,485 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:17:59,498 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 22:17:59,529 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 22:17:59,530 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 22:17:59,531 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 22:17:59,532 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 22:17:59,533 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 22:17:59,536 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 22:17:59,537 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 22:17:59,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:17:59,616 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:17:59,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59 WrapperNode [2022-12-13 22:17:59,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:17:59,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:17:59,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:17:59,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:17:59,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,654 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-12-13 22:17:59,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:17:59,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:17:59,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:17:59,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:17:59,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:17:59,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:17:59,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:17:59,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:17:59,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (1/1) ... [2022-12-13 22:17:59,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:17:59,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:17:59,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:17:59,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:17:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 22:17:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 22:17:59,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 22:17:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:17:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 22:17:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:17:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:17:59,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:17:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:17:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 22:17:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 22:17:59,850 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:17:59,852 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:17:59,967 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:17:59,973 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:17:59,973 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 22:17:59,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:17:59 BoogieIcfgContainer [2022-12-13 22:17:59,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:17:59,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:17:59,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:17:59,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:17:59,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:17:58" (1/3) ... [2022-12-13 22:17:59,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6950ad4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:17:59, skipping insertion in model container [2022-12-13 22:17:59,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:17:59" (2/3) ... [2022-12-13 22:17:59,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6950ad4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:17:59, skipping insertion in model container [2022-12-13 22:17:59,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:17:59" (3/3) ... [2022-12-13 22:17:59,984 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_04_bad.i [2022-12-13 22:18:00,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:18:00,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 22:18:00,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:18:00,040 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;@16977b48, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:18:00,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 22:18:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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 22:18:00,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:18:00,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:18:00,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:18:00,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 22:18:00,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:18:00,053 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-13 22:18:00,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:18:00,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554915401] [2022-12-13 22:18:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:18:00,063 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 22:18:00,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:18:00,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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 22:18:00,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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 22:18:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:00,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 22:18:00,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:18:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:18:00,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:18:00,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:18:00,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554915401] [2022-12-13 22:18:00,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554915401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:18:00,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:18:00,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:18:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461047550] [2022-12-13 22:18:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:18:00,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:18:00,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:18:00,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:18:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:18:00,282 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 22:18:00,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:18:00,306 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-12-13 22:18:00,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:18:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-13 22:18:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:18:00,312 INFO L225 Difference]: With dead ends: 39 [2022-12-13 22:18:00,312 INFO L226 Difference]: Without dead ends: 15 [2022-12-13 22:18:00,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:18:00,316 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:18:00,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:18:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-13 22:18:00,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-13 22:18:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:18:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 22:18:00,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-13 22:18:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:18:00,342 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 22:18:00,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 22:18:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-13 22:18:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 22:18:00,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:18:00,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:18:00,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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 22:18:00,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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 22:18:00,545 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 22:18:00,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:18:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-13 22:18:00,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:18:00,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165749516] [2022-12-13 22:18:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:18:00,547 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 22:18:00,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:18:00,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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 22:18:00,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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 (3)] Waiting until timeout for monitored process [2022-12-13 22:18:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:18:00,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 22:18:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 22:18:00,766 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 22:18:00,766 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 22:18:00,767 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 22:18:00,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 22:18:00,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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 (3)] Ended with exit code 0 [2022-12-13 22:18:00,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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 22:18:00,980 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 22:18:00,991 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:18:01,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:18:01 BoogieIcfgContainer [2022-12-13 22:18:01,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:18:01,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:18:01,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:18:01,036 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:18:01,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:17:59" (3/4) ... [2022-12-13 22:18:01,039 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 22:18:01,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:18:01,040 INFO L158 Benchmark]: Toolchain (without parser) took 2228.59ms. Allocated memory is still 67.1MB. Free memory was 42.3MB in the beginning and 35.0MB in the end (delta: 7.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-12-13 22:18:01,040 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 32.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:18:01,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 803.95ms. Allocated memory is still 67.1MB. Free memory was 42.1MB in the beginning and 41.0MB in the end (delta: 1.1MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-12-13 22:18:01,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.37ms. Allocated memory is still 67.1MB. Free memory was 41.0MB in the beginning and 38.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:18:01,041 INFO L158 Benchmark]: Boogie Preprocessor took 20.17ms. Allocated memory is still 67.1MB. Free memory was 38.0MB in the beginning and 35.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:18:01,041 INFO L158 Benchmark]: RCFGBuilder took 300.11ms. Allocated memory is still 67.1MB. Free memory was 35.6MB in the beginning and 36.8MB in the end (delta: -1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 22:18:01,042 INFO L158 Benchmark]: TraceAbstraction took 1057.45ms. Allocated memory is still 67.1MB. Free memory was 35.9MB in the beginning and 35.3MB in the end (delta: 601.8kB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2022-12-13 22:18:01,042 INFO L158 Benchmark]: Witness Printer took 3.57ms. Allocated memory is still 67.1MB. Free memory was 35.3MB in the beginning and 35.0MB in the end (delta: 321.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:18:01,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 32.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 803.95ms. Allocated memory is still 67.1MB. Free memory was 42.1MB in the beginning and 41.0MB in the end (delta: 1.1MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.37ms. Allocated memory is still 67.1MB. Free memory was 41.0MB in the beginning and 38.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.17ms. Allocated memory is still 67.1MB. Free memory was 38.0MB in the beginning and 35.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 300.11ms. Allocated memory is still 67.1MB. Free memory was 35.6MB in the beginning and 36.8MB in the end (delta: -1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1057.45ms. Allocated memory is still 67.1MB. Free memory was 35.9MB in the beginning and 35.3MB in the end (delta: 601.8kB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Witness Printer took 3.57ms. Allocated memory is still 67.1MB. Free memory was 35.3MB in the beginning and 35.0MB in the end (delta: 321.1kB). 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: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1579] 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}, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1414] COND TRUE line != ((void *)0) [L1579] 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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_sub_04_bad() [L1552] int data; [L1553] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1568] COND TRUE \read(STATIC_CONST_TRUE) VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1571] data - 1 VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] - UnprovableResult [Line: 1571]: 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: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 22:18:01,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a672ef-5372-4720-85f7-8b62afb47803/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