./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a --- 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-4e7fbc6 [2022-11-23 15:19:13,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:19:13,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:19:13,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:19:13,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:19:13,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:19:13,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:19:13,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:19:13,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:19:13,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:19:13,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:19:13,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:19:13,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:19:13,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:19:13,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:19:13,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:19:13,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:19:13,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:19:13,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:19:13,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:19:13,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:19:13,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:19:13,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:19:13,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:19:13,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:19:13,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:19:13,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:19:13,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:19:13,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:19:13,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:19:13,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:19:13,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:19:13,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:19:13,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:19:13,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:19:13,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:19:13,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:19:13,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:19:13,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:19:13,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:19:13,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:19:13,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:19:14,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:19:14,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:19:14,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:19:14,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:19:14,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:19:14,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:19:14,012 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:19:14,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:19:14,012 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:19:14,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:19:14,013 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:19:14,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:19:14,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:19:14,014 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:19:14,014 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:19:14,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:19:14,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:19:14,015 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:19:14,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:19:14,017 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:19:14,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:19:14,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:19:14,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:19:14,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:19:14,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:19:14,019 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:19:14,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:19:14,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:19:14,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:19:14,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:19:14,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:19:14,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:14,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:19:14,021 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:19:14,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:19:14,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:19:14,022 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:19:14,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:19:14,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:19:14,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:19:14,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a [2022-11-23 15:19:14,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:19:14,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:19:14,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:19:14,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:19:14,274 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:19:14,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-11-23 15:19:17,393 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:19:17,867 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:19:17,868 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-11-23 15:19:17,886 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/data/a84aa7dfc/cb576150ff074edcb677ccc177b4d347/FLAG7690ab270 [2022-11-23 15:19:17,901 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/data/a84aa7dfc/cb576150ff074edcb677ccc177b4d347 [2022-11-23 15:19:17,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:19:17,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:19:17,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:17,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:19:17,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:19:17,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:17" (1/1) ... [2022-11-23 15:19:17,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193fb5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:17, skipping insertion in model container [2022-11-23 15:19:17,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:17" (1/1) ... [2022-11-23 15:19:17,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:19:17,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:19:18,419 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:19:18,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:18,995 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:19:19,028 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:19:19,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:19,294 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:19:19,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19 WrapperNode [2022-11-23 15:19:19,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:19,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:19,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:19:19,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:19:19,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,378 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 53 [2022-11-23 15:19:19,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:19,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:19:19,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:19:19,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:19:19,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,429 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:19:19,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:19:19,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:19:19,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:19:19,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (1/1) ... [2022-11-23 15:19:19,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:19,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:19:19,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:19:19,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:19:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:19:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:19:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:19:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:19:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:19:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:19:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:19:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:19:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:19:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:19:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:19:19,747 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:19:19,750 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:19:19,949 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:19:19,998 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:19:20,011 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:19:20,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:20 BoogieIcfgContainer [2022-11-23 15:19:20,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:19:20,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:19:20,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:19:20,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:19:20,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:19:17" (1/3) ... [2022-11-23 15:19:20,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd3df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:20, skipping insertion in model container [2022-11-23 15:19:20,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:19" (2/3) ... [2022-11-23 15:19:20,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd3df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:20, skipping insertion in model container [2022-11-23 15:19:20,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:20" (3/3) ... [2022-11-23 15:19:20,026 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-11-23 15:19:20,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:19:20,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:19:20,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:19:20,116 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=FINITE_AUTOMATA, 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;@6e89d451, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:19:20,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:19:20,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:19:20,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:19:20,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:20,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:20,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:19:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1634006193, now seen corresponding path program 1 times [2022-11-23 15:19:20,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:19:20,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547727742] [2022-11-23 15:19:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:19:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:19:20,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:19:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:19:20,371 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:19:20,373 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:19:20,375 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:19:20,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:19:20,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:19:20,382 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:19:20,387 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:19:20,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:19:20 BoogieIcfgContainer [2022-11-23 15:19:20,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:19:20,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:19:20,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:19:20,412 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:19:20,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:20" (3/4) ... [2022-11-23 15:19:20,416 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:19:20,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:19:20,417 INFO L158 Benchmark]: Toolchain (without parser) took 2510.09ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 110.5MB in the beginning and 112.5MB in the end (delta: -2.0MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2022-11-23 15:19:20,418 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 146.8MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:19:20,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1385.22ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 110.1MB in the beginning and 149.3MB in the end (delta: -39.2MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. [2022-11-23 15:19:20,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.79ms. Allocated memory is still 207.6MB. Free memory was 149.3MB in the beginning and 146.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:19:20,420 INFO L158 Benchmark]: Boogie Preprocessor took 53.17ms. Allocated memory is still 207.6MB. Free memory was 146.0MB in the beginning and 144.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:19:20,421 INFO L158 Benchmark]: RCFGBuilder took 580.68ms. Allocated memory is still 207.6MB. Free memory was 144.9MB in the beginning and 130.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:19:20,421 INFO L158 Benchmark]: TraceAbstraction took 394.67ms. Allocated memory is still 207.6MB. Free memory was 129.3MB in the beginning and 112.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:19:20,422 INFO L158 Benchmark]: Witness Printer took 4.60ms. Allocated memory is still 207.6MB. Free memory was 112.5MB in the beginning and 112.5MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:19:20,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 146.8MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1385.22ms. Allocated memory was 146.8MB in the beginning and 207.6MB in the end (delta: 60.8MB). Free memory was 110.1MB in the beginning and 149.3MB in the end (delta: -39.2MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.79ms. Allocated memory is still 207.6MB. Free memory was 149.3MB in the beginning and 146.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.17ms. Allocated memory is still 207.6MB. Free memory was 146.0MB in the beginning and 144.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 580.68ms. Allocated memory is still 207.6MB. Free memory was 144.9MB in the beginning and 130.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 394.67ms. Allocated memory is still 207.6MB. Free memory was 129.3MB in the beginning and 112.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.60ms. Allocated memory is still 207.6MB. Free memory was 112.5MB in the beginning and 112.5MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [#in~argv={1073741829:1073741828}, argc=1073741826, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=1073741826] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_51_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_51b_badSink(data) [L1577] 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, unknown-#in~data-unknown=-2147483648] - UnprovableResult [Line: 1577]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:19:20,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a --- 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-4e7fbc6 [2022-11-23 15:19:22,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:19:22,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:19:22,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:19:22,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:19:22,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:19:23,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:19:23,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:19:23,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:19:23,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:19:23,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:19:23,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:19:23,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:19:23,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:19:23,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:19:23,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:19:23,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:19:23,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:19:23,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:19:23,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:19:23,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:19:23,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:19:23,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:19:23,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:19:23,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:19:23,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:19:23,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:19:23,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:19:23,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:19:23,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:19:23,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:19:23,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:19:23,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:19:23,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:19:23,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:19:23,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:19:23,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:19:23,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:19:23,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:19:23,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:19:23,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:19:23,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 15:19:23,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:19:23,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:19:23,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:19:23,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:19:23,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:19:23,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:19:23,126 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:19:23,126 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:19:23,127 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:19:23,127 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:19:23,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:19:23,128 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:19:23,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:19:23,129 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:19:23,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:19:23,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:19:23,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:19:23,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:19:23,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:19:23,131 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:19:23,131 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:19:23,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:19:23,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:19:23,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:19:23,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:19:23,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:19:23,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:19:23,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:19:23,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:23,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:19:23,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:19:23,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:19:23,134 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:19:23,134 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:19:23,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:19:23,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:19:23,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:19:23,135 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a [2022-11-23 15:19:23,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:19:23,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:19:23,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:19:23,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:19:23,569 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:19:23,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-11-23 15:19:26,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:19:26,944 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:19:26,945 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-11-23 15:19:26,989 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/data/0557e5ba3/01b0019ebd1c4d8f9d0220ebd3b3240a/FLAGae84aa5c4 [2022-11-23 15:19:27,013 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/data/0557e5ba3/01b0019ebd1c4d8f9d0220ebd3b3240a [2022-11-23 15:19:27,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:19:27,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:19:27,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:27,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:19:27,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:19:27,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:27" (1/1) ... [2022-11-23 15:19:27,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db3e21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:27, skipping insertion in model container [2022-11-23 15:19:27,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:27" (1/1) ... [2022-11-23 15:19:27,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:19:27,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:19:27,559 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:19:28,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:28,108 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:19:28,126 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:19:28,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:19:28,312 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:19:28,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28 WrapperNode [2022-11-23 15:19:28,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:19:28,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:28,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:19:28,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:19:28,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,376 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 52 [2022-11-23 15:19:28,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:19:28,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:19:28,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:19:28,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:19:28,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,408 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:19:28,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:19:28,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:19:28,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:19:28,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (1/1) ... [2022-11-23 15:19:28,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:19:28,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:19:28,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:19:28,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:19:28,524 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:19:28,524 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:19:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:19:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:19:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:19:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:19:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:19:28,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:19:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:19:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:19:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 15:19:28,761 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:19:28,763 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:19:28,934 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:19:28,939 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:19:28,939 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:19:28,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:28 BoogieIcfgContainer [2022-11-23 15:19:28,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:19:28,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:19:28,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:19:28,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:19:28,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:19:27" (1/3) ... [2022-11-23 15:19:28,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4acf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:28, skipping insertion in model container [2022-11-23 15:19:28,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:28" (2/3) ... [2022-11-23 15:19:28,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4acf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:28, skipping insertion in model container [2022-11-23 15:19:28,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:28" (3/3) ... [2022-11-23 15:19:28,967 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2022-11-23 15:19:28,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:19:28,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:19:29,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:19:29,039 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=FINITE_AUTOMATA, 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;@7d0cb69a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:19:29,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:19:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:19:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:19:29,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:19:29,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:19:29,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:19:29,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:19:29,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-23 15:19:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:19:29,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300999662] [2022-11-23 15:19:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:19:29,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:19:29,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:19:29,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:19:29,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:19:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:19:29,283 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:19:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:19:29,350 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 15:19:29,356 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:19:29,358 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:19:29,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:19:29,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:19:29,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:19:29,579 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:19:29,585 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:19:29,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:19:29 BoogieIcfgContainer [2022-11-23 15:19:29,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:19:29,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:19:29,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:19:29,635 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:19:29,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:28" (3/4) ... [2022-11-23 15:19:29,641 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:19:29,641 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:19:29,643 INFO L158 Benchmark]: Toolchain (without parser) took 2622.53ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 57.8MB in the beginning and 53.2MB in the end (delta: 4.6MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-11-23 15:19:29,643 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory is still 59.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:19:29,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1290.45ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 57.6MB in the beginning and 60.0MB in the end (delta: -2.5MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2022-11-23 15:19:29,649 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.47ms. Allocated memory is still 102.8MB. Free memory was 60.0MB in the beginning and 57.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:19:29,651 INFO L158 Benchmark]: Boogie Preprocessor took 36.27ms. Allocated memory is still 102.8MB. Free memory was 57.2MB in the beginning and 54.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:19:29,652 INFO L158 Benchmark]: RCFGBuilder took 540.31ms. Allocated memory is still 102.8MB. Free memory was 54.7MB in the beginning and 71.2MB in the end (delta: -16.4MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-11-23 15:19:29,653 INFO L158 Benchmark]: TraceAbstraction took 676.28ms. Allocated memory is still 102.8MB. Free memory was 70.6MB in the beginning and 53.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:19:29,654 INFO L158 Benchmark]: Witness Printer took 6.77ms. Allocated memory is still 102.8MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:19:29,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory is still 59.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1290.45ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 57.6MB in the beginning and 60.0MB in the end (delta: -2.5MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.47ms. Allocated memory is still 102.8MB. Free memory was 60.0MB in the beginning and 57.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.27ms. Allocated memory is still 102.8MB. Free memory was 57.2MB in the beginning and 54.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 540.31ms. Allocated memory is still 102.8MB. Free memory was 54.7MB in the beginning and 71.2MB in the end (delta: -16.4MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * TraceAbstraction took 676.28ms. Allocated memory is still 102.8MB. Free memory was 70.6MB in the beginning and 53.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 6.77ms. Allocated memory is still 102.8MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [#in~argv={13:12}, argc=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, unknown-#in~argc-unknown=12] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_51_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_51b_badSink(data) [L1577] 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, unknown-#in~data-unknown=-2147483648] - UnprovableResult [Line: 1577]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:19:29,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43daed1f-e786-4619-ad02-9e15f3566a2c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample