./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 647f45b8ea711897b723bc94e8bcadcfaeb96b9098cf2973f5d00bda379da59c --- 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 15:44:59,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:44:59,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:44:59,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:44:59,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:44:59,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:44:59,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:44:59,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:44:59,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:44:59,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:44:59,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:44:59,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:44:59,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:44:59,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:44:59,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:44:59,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:44:59,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:44:59,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:44:59,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:44:59,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:44:59,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:44:59,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:44:59,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:44:59,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:45:00,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:45:00,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:45:00,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:45:00,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:45:00,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:45:00,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:45:00,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:45:00,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:45:00,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:45:00,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:45:00,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:45:00,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:45:00,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:45:00,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:45:00,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:45:00,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:45:00,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:45:00,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:45:00,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:45:00,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:45:00,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:45:00,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:45:00,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:45:00,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:45:00,063 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:45:00,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:45:00,064 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:45:00,064 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:45:00,065 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:45:00,065 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:45:00,066 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:45:00,066 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:45:00,066 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:45:00,066 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:45:00,067 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:45:00,067 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:45:00,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:45:00,068 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:45:00,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:45:00,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:45:00,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:45:00,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:45:00,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:45:00,070 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:45:00,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:45:00,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:45:00,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:45:00,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:45:00,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:45:00,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:00,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:45:00,073 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:45:00,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:45:00,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:45:00,073 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:45:00,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:45:00,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:45:00,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:45:00,075 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_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647f45b8ea711897b723bc94e8bcadcfaeb96b9098cf2973f5d00bda379da59c [2022-11-23 15:45:00,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:45:00,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:45:00,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:45:00,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:45:00,398 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:45:00,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2022-11-23 15:45:03,320 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:45:03,703 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:45:03,704 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2022-11-23 15:45:03,738 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/data/6fc574aab/e0cde59f09b4423891e46bf1d3761f7b/FLAG6178d6857 [2022-11-23 15:45:03,757 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/data/6fc574aab/e0cde59f09b4423891e46bf1d3761f7b [2022-11-23 15:45:03,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:45:03,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:45:03,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:03,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:45:03,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:45:03,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:03" (1/1) ... [2022-11-23 15:45:03,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5878a7c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:03, skipping insertion in model container [2022-11-23 15:45:03,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:03" (1/1) ... [2022-11-23 15:45:03,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:45:03,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:45:04,241 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:45:04,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:04,787 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:45:04,808 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:45:04,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:05,062 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:45:05,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05 WrapperNode [2022-11-23 15:45:05,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:05,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:05,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:45:05,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:45:05,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,130 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-23 15:45:05,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:05,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:45:05,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:45:05,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:45:05,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:45:05,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:45:05,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:45:05,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:45:05,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (1/1) ... [2022-11-23 15:45:05,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:05,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:05,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:45:05,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:45:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:45:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:45:05,248 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:45:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:45:05,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:45:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:45:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:45:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:45:05,493 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:45:05,495 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:45:05,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:45:05,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:45:05,674 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:45:05,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:05 BoogieIcfgContainer [2022-11-23 15:45:05,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:45:05,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:45:05,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:45:05,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:45:05,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:03" (1/3) ... [2022-11-23 15:45:05,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b660d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:05, skipping insertion in model container [2022-11-23 15:45:05,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:05" (2/3) ... [2022-11-23 15:45:05,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b660d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:05, skipping insertion in model container [2022-11-23 15:45:05,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:05" (3/3) ... [2022-11-23 15:45:05,687 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2022-11-23 15:45:05,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:45:05,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:45:05,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:45:05,766 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;@1597a93b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:45:05,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:45:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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 15:45:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:45:05,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:05,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:05,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:45:05,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-11-23 15:45:05,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:05,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244322159] [2022-11-23 15:45:05,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:05,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:06,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:06,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244322159] [2022-11-23 15:45:06,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244322159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:06,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:06,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:45:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867986821] [2022-11-23 15:45:06,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:06,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:06,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:06,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:06,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:45:06,132 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-23 15:45:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:06,172 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-23 15:45:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:06,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 8 [2022-11-23 15:45:06,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:06,182 INFO L225 Difference]: With dead ends: 29 [2022-11-23 15:45:06,182 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 15:45:06,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:45:06,189 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:06,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:45:06,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 15:45:06,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-23 15:45:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 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) [2022-11-23 15:45:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-23 15:45:06,227 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-11-23 15:45:06,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:06,229 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-23 15:45:06,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-23 15:45:06,230 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-23 15:45:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 15:45:06,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:06,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:06,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:45:06,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:45:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-11-23 15:45:06,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:06,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344523517] [2022-11-23 15:45:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:06,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:45:06,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:45:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:45:06,325 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:45:06,326 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:45:06,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:45:06,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:45:06,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:45:06,339 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 15:45:06,345 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:45:06,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:45:06 BoogieIcfgContainer [2022-11-23 15:45:06,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:45:06,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:45:06,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:45:06,393 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:45:06,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:05" (3/4) ... [2022-11-23 15:45:06,398 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:45:06,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:45:06,399 INFO L158 Benchmark]: Toolchain (without parser) took 2634.07ms. Allocated memory was 178.3MB in the beginning and 216.0MB in the end (delta: 37.7MB). Free memory was 131.6MB in the beginning and 126.5MB in the end (delta: 5.1MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2022-11-23 15:45:06,399 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 178.3MB. Free memory was 149.1MB in the beginning and 148.9MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:06,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1295.39ms. Allocated memory was 178.3MB in the beginning and 216.0MB in the end (delta: 37.7MB). Free memory was 131.1MB in the beginning and 177.9MB in the end (delta: -46.8MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2022-11-23 15:45:06,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.25ms. Allocated memory is still 216.0MB. Free memory was 177.9MB in the beginning and 174.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:45:06,401 INFO L158 Benchmark]: Boogie Preprocessor took 26.38ms. Allocated memory is still 216.0MB. Free memory was 174.7MB in the beginning and 173.7MB in the end (delta: 943.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:06,403 INFO L158 Benchmark]: RCFGBuilder took 518.87ms. Allocated memory is still 216.0MB. Free memory was 172.7MB in the beginning and 159.0MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 15:45:06,403 INFO L158 Benchmark]: TraceAbstraction took 712.16ms. Allocated memory is still 216.0MB. Free memory was 158.0MB in the beginning and 127.6MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-23 15:45:06,404 INFO L158 Benchmark]: Witness Printer took 6.03ms. Allocated memory is still 216.0MB. Free memory was 127.6MB in the beginning and 126.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:06,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 178.3MB. Free memory was 149.1MB in the beginning and 148.9MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1295.39ms. Allocated memory was 178.3MB in the beginning and 216.0MB in the end (delta: 37.7MB). Free memory was 131.1MB in the beginning and 177.9MB in the end (delta: -46.8MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.25ms. Allocated memory is still 216.0MB. Free memory was 177.9MB in the beginning and 174.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.38ms. Allocated memory is still 216.0MB. Free memory was 174.7MB in the beginning and 173.7MB in the end (delta: 943.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 518.87ms. Allocated memory is still 216.0MB. Free memory was 172.7MB in the beginning and 159.0MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 712.16ms. Allocated memory is still 216.0MB. Free memory was 158.0MB in the beginning and 127.6MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 6.03ms. Allocated memory is still 216.0MB. Free memory was 127.6MB in the beginning and 126.5MB in the end (delta: 1.0MB). 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1577] 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) [L1577] RET printLine("Calling bad()...") VAL [#in~argv={1073741828:1073741827}, argc=1073741826, argv={1073741828:1073741827}, 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_13_bad() [L1550] int data; [L1551] 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] [L1552] COND TRUE GLOBAL_CONST_FIVE==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; 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] [L1566] COND TRUE GLOBAL_CONST_FIVE==5 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] [L1569] 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] - UnprovableResult [Line: 1569]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 14 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 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 [2022-11-23 15:45:06,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 647f45b8ea711897b723bc94e8bcadcfaeb96b9098cf2973f5d00bda379da59c --- 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 15:45:08,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:45:08,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:45:08,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:45:08,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:45:08,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:45:08,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:45:08,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:45:08,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:45:08,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:45:08,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:45:08,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:45:08,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:45:08,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:45:08,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:45:08,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:45:08,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:45:08,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:45:08,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:45:08,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:45:08,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:45:08,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:45:08,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:45:08,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:45:08,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:45:08,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:45:08,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:45:08,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:45:08,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:45:08,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:45:08,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:45:08,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:45:08,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:45:08,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:45:08,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:45:08,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:45:08,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:45:08,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:45:08,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:45:08,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:45:08,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:45:08,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 15:45:08,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:45:08,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:45:08,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:45:08,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:45:08,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:45:08,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:45:08,963 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:45:08,963 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:45:08,963 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:45:08,963 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:45:08,964 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:45:08,964 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:45:08,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:45:08,965 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:45:08,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:45:08,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:45:08,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:45:08,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:45:08,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:45:08,966 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:45:08,966 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:45:08,967 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:45:08,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:45:08,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:45:08,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:45:08,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:45:08,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:45:08,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:45:08,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:08,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:45:08,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:45:08,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:45:08,969 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:45:08,969 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:45:08,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:45:08,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:45:08,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:45:08,974 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_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647f45b8ea711897b723bc94e8bcadcfaeb96b9098cf2973f5d00bda379da59c [2022-11-23 15:45:09,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:45:09,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:45:09,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:45:09,432 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:45:09,433 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:45:09,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2022-11-23 15:45:12,531 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:45:12,989 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:45:12,990 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2022-11-23 15:45:13,017 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/data/55c110c95/9ac30a1cf86c4754887b26b694de9be4/FLAG632438b56 [2022-11-23 15:45:13,098 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/data/55c110c95/9ac30a1cf86c4754887b26b694de9be4 [2022-11-23 15:45:13,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:45:13,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:45:13,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:13,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:45:13,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:45:13,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:13" (1/1) ... [2022-11-23 15:45:13,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f0c376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:13, skipping insertion in model container [2022-11-23 15:45:13,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:45:13" (1/1) ... [2022-11-23 15:45:13,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:45:13,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:45:13,531 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:45:14,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:14,059 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:45:14,092 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:45:14,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:45:14,388 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:45:14,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14 WrapperNode [2022-11-23 15:45:14,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:45:14,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:14,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:45:14,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:45:14,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,452 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-11-23 15:45:14,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:45:14,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:45:14,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:45:14,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:45:14,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,497 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:45:14,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:45:14,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:45:14,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:45:14,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (1/1) ... [2022-11-23 15:45:14,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:45:14,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:14,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:45:14,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:45:14,589 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:45:14,590 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:45:14,590 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:45:14,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:45:14,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:45:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:45:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:45:14,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:45:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:45:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:45:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 15:45:14,755 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:45:14,757 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:45:14,919 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:45:14,925 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:45:14,925 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:45:14,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:14 BoogieIcfgContainer [2022-11-23 15:45:14,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:45:14,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:45:14,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:45:14,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:45:14,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:45:13" (1/3) ... [2022-11-23 15:45:14,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e586c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:14, skipping insertion in model container [2022-11-23 15:45:14,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:45:14" (2/3) ... [2022-11-23 15:45:14,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e586c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:45:14, skipping insertion in model container [2022-11-23 15:45:14,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:14" (3/3) ... [2022-11-23 15:45:14,936 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2022-11-23 15:45:14,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:45:14,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:45:15,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:45:15,041 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;@166d4723, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:45:15,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:45:15,046 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) [2022-11-23 15:45:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:45:15,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:15,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:15,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:45:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-11-23 15:45:15,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:15,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345669257] [2022-11-23 15:45:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:15,073 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 15:45:15,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:15,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 15:45:15,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 15:45:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:15,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:45:15,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:45:15,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:45:15,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:45:15,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345669257] [2022-11-23 15:45:15,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345669257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:45:15,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:45:15,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:45:15,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520030729] [2022-11-23 15:45:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:45:15,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:45:15,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:45:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:45:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:45:15,373 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) [2022-11-23 15:45:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:15,425 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-11-23 15:45:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:45:15,428 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 [2022-11-23 15:45:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:15,453 INFO L225 Difference]: With dead ends: 39 [2022-11-23 15:45:15,453 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 15:45:15,456 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 [2022-11-23 15:45:15,459 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 [2022-11-23 15:45:15,460 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] [2022-11-23 15:45:15,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 15:45:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 15:45:15,490 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) [2022-11-23 15:45:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-23 15:45:15,492 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-11-23 15:45:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:15,494 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-23 15:45:15,494 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) [2022-11-23 15:45:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-23 15:45:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:45:15,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:15,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:45:15,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 15:45:15,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 15:45:15,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:45:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:15,699 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-11-23 15:45:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:45:15,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703683401] [2022-11-23 15:45:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:15,701 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 15:45:15,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:45:15,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 15:45:15,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 (3)] Waiting until timeout for monitored process [2022-11-23 15:45:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:45:15,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:45:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:45:15,920 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 15:45:15,920 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:45:15,929 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:45:15,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:45:15,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:16,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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 15:45:16,137 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 15:45:16,140 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:45:16,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:45:16 BoogieIcfgContainer [2022-11-23 15:45:16,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:45:16,188 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:45:16,189 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:45:16,193 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:45:16,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:45:14" (3/4) ... [2022-11-23 15:45:16,197 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:45:16,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:45:16,198 INFO L158 Benchmark]: Toolchain (without parser) took 3096.16ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 49.9MB in the beginning and 66.9MB in the end (delta: -17.0MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2022-11-23 15:45:16,198 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 77.6MB. Free memory is still 55.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:16,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1285.92ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 49.7MB in the beginning and 55.8MB in the end (delta: -6.2MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2022-11-23 15:45:16,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.90ms. Allocated memory is still 109.1MB. Free memory was 55.8MB in the beginning and 52.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:45:16,200 INFO L158 Benchmark]: Boogie Preprocessor took 48.86ms. Allocated memory is still 109.1MB. Free memory was 52.7MB in the beginning and 82.0MB in the end (delta: -29.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2022-11-23 15:45:16,201 INFO L158 Benchmark]: RCFGBuilder took 425.14ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 67.2MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:45:16,201 INFO L158 Benchmark]: TraceAbstraction took 1256.80ms. Allocated memory is still 109.1MB. Free memory was 66.5MB in the beginning and 66.9MB in the end (delta: -420.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:16,202 INFO L158 Benchmark]: Witness Printer took 9.29ms. Allocated memory is still 109.1MB. Free memory is still 66.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:45:16,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 77.6MB. Free memory is still 55.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1285.92ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 49.7MB in the beginning and 55.8MB in the end (delta: -6.2MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.90ms. Allocated memory is still 109.1MB. Free memory was 55.8MB in the beginning and 52.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.86ms. Allocated memory is still 109.1MB. Free memory was 52.7MB in the beginning and 82.0MB in the end (delta: -29.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * RCFGBuilder took 425.14ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 67.2MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1256.80ms. Allocated memory is still 109.1MB. Free memory was 66.5MB in the beginning and 66.9MB in the end (delta: -420.6kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 9.29ms. Allocated memory is still 109.1MB. Free memory is still 66.9MB. 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_13_bad() [L1550] int data; [L1551] 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] [L1552] COND TRUE GLOBAL_CONST_FIVE==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; 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] [L1566] COND TRUE GLOBAL_CONST_FIVE==5 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] [L1569] 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] - UnprovableResult [Line: 1569]: 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: 1.1s, 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, 47 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 [2022-11-23 15:45:16,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30bf56b0-94ce-4ab6-9b85-9df43daa5302/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