./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_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_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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_fd17dae4-a619-400e-b66e-3f0db69998ef/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 436067b5a7e83a6a102ade1165753822668aa7a7dda33688650a66200c786699 --- 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 14:42:07,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:42:07,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:42:07,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:42:07,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:42:07,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:42:07,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:42:07,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:42:07,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:42:07,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:42:07,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:42:07,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:42:07,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:42:07,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:42:07,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:42:07,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:42:07,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:42:07,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:42:07,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:42:07,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:42:07,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:42:07,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:42:07,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:42:07,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:42:07,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:42:07,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:42:07,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:42:07,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:42:07,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:42:07,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:42:07,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:42:07,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:42:07,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:42:07,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:42:07,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:42:07,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:42:07,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:42:07,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:42:07,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:42:07,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:42:07,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:42:07,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 14:42:08,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:42:08,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:42:08,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:42:08,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:42:08,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:42:08,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:42:08,061 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:42:08,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:42:08,062 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:42:08,062 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:42:08,063 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:42:08,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:42:08,064 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:42:08,064 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:42:08,065 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:42:08,065 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:42:08,065 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:42:08,066 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:42:08,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:42:08,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:42:08,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:42:08,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:42:08,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:42:08,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:42:08,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:42:08,069 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:42:08,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:42:08,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:42:08,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:42:08,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:42:08,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:42:08,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:42:08,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:42:08,071 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:42:08,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:42:08,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:42:08,072 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:42:08,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:42:08,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:42:08,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:42:08,074 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_fd17dae4-a619-400e-b66e-3f0db69998ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436067b5a7e83a6a102ade1165753822668aa7a7dda33688650a66200c786699 [2022-11-23 14:42:08,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:42:08,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:42:08,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:42:08,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:42:08,431 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:42:08,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-11-23 14:42:11,995 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:42:12,431 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:42:12,432 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-11-23 14:42:12,455 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/data/44cf91511/7ec442c02230492bb4b824337b782992/FLAG725ff3964 [2022-11-23 14:42:12,473 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/data/44cf91511/7ec442c02230492bb4b824337b782992 [2022-11-23 14:42:12,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:42:12,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:42:12,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:42:12,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:42:12,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:42:12,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:12" (1/1) ... [2022-11-23 14:42:12,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b79ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:12, skipping insertion in model container [2022-11-23 14:42:12,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:12" (1/1) ... [2022-11-23 14:42:12,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:42:12,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:42:13,169 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:42:14,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:42:14,025 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:42:14,049 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:42:14,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:42:14,317 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:42:14,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14 WrapperNode [2022-11-23 14:42:14,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:42:14,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:42:14,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:42:14,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:42:14,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,433 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-11-23 14:42:14,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:42:14,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:42:14,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:42:14,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:42:14,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,539 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:42:14,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:42:14,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:42:14,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:42:14,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (1/1) ... [2022-11-23 14:42:14,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:42:14,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:42:14,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:42:14,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:42:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 14:42:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:42:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:42:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:42:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:42:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:42:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:42:14,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:42:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:42:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:42:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:42:14,865 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:42:14,867 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:42:15,045 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:42:15,117 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:42:15,118 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:42:15,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:15 BoogieIcfgContainer [2022-11-23 14:42:15,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:42:15,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:42:15,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:42:15,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:42:15,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:42:12" (1/3) ... [2022-11-23 14:42:15,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73296766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:15, skipping insertion in model container [2022-11-23 14:42:15,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:14" (2/3) ... [2022-11-23 14:42:15,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73296766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:15, skipping insertion in model container [2022-11-23 14:42:15,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:15" (3/3) ... [2022-11-23 14:42:15,147 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-11-23 14:42:15,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:42:15,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:42:15,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:42:15,303 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;@45e3ab7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:42:15,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:42:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:42:15,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:42:15,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:15,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:15,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:42:15,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1607565872, now seen corresponding path program 1 times [2022-11-23 14:42:15,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:15,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682608554] [2022-11-23 14:42:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:15,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:42:15,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:42:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:42:15,690 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:42:15,692 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:42:15,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:42:15,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:42:15,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:42:15,704 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:42:15,714 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:42:15,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:42:15 BoogieIcfgContainer [2022-11-23 14:42:15,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:42:15,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:42:15,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:42:15,767 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:42:15,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:15" (3/4) ... [2022-11-23 14:42:15,776 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:42:15,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:42:15,778 INFO L158 Benchmark]: Toolchain (without parser) took 3299.05ms. Allocated memory was 157.3MB in the beginning and 220.2MB in the end (delta: 62.9MB). Free memory was 108.3MB in the beginning and 159.0MB in the end (delta: -50.7MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2022-11-23 14:42:15,779 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 157.3MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:42:15,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1838.28ms. Allocated memory is still 157.3MB. Free memory was 108.3MB in the beginning and 46.1MB in the end (delta: 62.2MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2022-11-23 14:42:15,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.97ms. Allocated memory is still 157.3MB. Free memory was 46.1MB in the beginning and 43.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:42:15,786 INFO L158 Benchmark]: Boogie Preprocessor took 109.62ms. Allocated memory is still 157.3MB. Free memory was 43.3MB in the beginning and 126.7MB in the end (delta: -83.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-11-23 14:42:15,787 INFO L158 Benchmark]: RCFGBuilder took 574.24ms. Allocated memory was 157.3MB in the beginning and 220.2MB in the end (delta: 62.9MB). Free memory was 126.6MB in the beginning and 176.8MB in the end (delta: -50.2MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2022-11-23 14:42:15,787 INFO L158 Benchmark]: TraceAbstraction took 639.05ms. Allocated memory is still 220.2MB. Free memory was 176.8MB in the beginning and 160.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 14:42:15,788 INFO L158 Benchmark]: Witness Printer took 9.61ms. Allocated memory is still 220.2MB. Free memory is still 159.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:42:15,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 157.3MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1838.28ms. Allocated memory is still 157.3MB. Free memory was 108.3MB in the beginning and 46.1MB in the end (delta: 62.2MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.97ms. Allocated memory is still 157.3MB. Free memory was 46.1MB in the beginning and 43.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 109.62ms. Allocated memory is still 157.3MB. Free memory was 43.3MB in the beginning and 126.7MB in the end (delta: -83.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * RCFGBuilder took 574.24ms. Allocated memory was 157.3MB in the beginning and 220.2MB in the end (delta: 62.9MB). Free memory was 126.6MB in the beginning and 176.8MB in the end (delta: -50.2MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * TraceAbstraction took 639.05ms. Allocated memory is still 220.2MB. Free memory was 176.8MB in the beginning and 160.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 9.61ms. Allocated memory is still 220.2MB. Free memory is still 159.0MB. 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: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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); [L1576] 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) [L1576] RET printLine("Calling bad()...") VAL [#in~argv={1073741827:1073741826}, argc=1073741825, argv={1073741827:1073741826}, 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=1073741825] [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] int dataCopy = data; [L1565] int data = dataCopy; [L1567] data-- VAL [data=-2147483648, data=-2147483648, data--=-2147483648, dataCopy=-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: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:42:15,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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_fd17dae4-a619-400e-b66e-3f0db69998ef/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 436067b5a7e83a6a102ade1165753822668aa7a7dda33688650a66200c786699 --- 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 14:42:18,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:42:18,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:42:18,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:42:18,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:42:18,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:42:18,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:42:18,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:42:18,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:42:18,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:42:18,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:42:18,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:42:18,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:42:18,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:42:18,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:42:18,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:42:18,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:42:18,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:42:18,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:42:18,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:42:18,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:42:18,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:42:18,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:42:18,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:42:18,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:42:18,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:42:18,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:42:18,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:42:18,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:42:18,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:42:18,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:42:18,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:42:18,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:42:18,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:42:18,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:42:18,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:42:18,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:42:18,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:42:18,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:42:18,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:42:18,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:42:18,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 14:42:19,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:42:19,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:42:19,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:42:19,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:42:19,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:42:19,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:42:19,017 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:42:19,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:42:19,018 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:42:19,018 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:42:19,019 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:42:19,020 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:42:19,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:42:19,021 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:42:19,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:42:19,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:42:19,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:42:19,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:42:19,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:42:19,023 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:42:19,023 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 14:42:19,023 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:42:19,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:42:19,024 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:42:19,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:42:19,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:42:19,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:42:19,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:42:19,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:42:19,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:42:19,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:42:19,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:42:19,027 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:42:19,027 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:42:19,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:42:19,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:42:19,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:42:19,028 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_fd17dae4-a619-400e-b66e-3f0db69998ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436067b5a7e83a6a102ade1165753822668aa7a7dda33688650a66200c786699 [2022-11-23 14:42:19,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:42:19,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:42:19,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:42:19,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:42:19,521 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:42:19,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-11-23 14:42:23,102 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:42:23,530 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:42:23,531 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-11-23 14:42:23,590 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/data/edec205c2/f5874b415b234722b9c82bb538937e28/FLAG6da92b031 [2022-11-23 14:42:23,618 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/data/edec205c2/f5874b415b234722b9c82bb538937e28 [2022-11-23 14:42:23,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:42:23,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:42:23,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:42:23,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:42:23,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:42:23,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:23" (1/1) ... [2022-11-23 14:42:23,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c99d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:23, skipping insertion in model container [2022-11-23 14:42:23,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:42:23" (1/1) ... [2022-11-23 14:42:23,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:42:23,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:42:24,177 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:42:24,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:42:24,899 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:42:24,998 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 14:42:25,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:42:25,301 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:42:25,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25 WrapperNode [2022-11-23 14:42:25,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:42:25,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:42:25,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:42:25,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:42:25,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,408 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-11-23 14:42:25,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:42:25,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:42:25,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:42:25,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:42:25,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:42:25,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:42:25,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:42:25,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:42:25,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (1/1) ... [2022-11-23 14:42:25,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:42:25,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:42:25,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:42:25,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:42:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 14:42:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 14:42:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 14:42:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:42:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:42:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:42:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:42:25,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:42:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:42:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 14:42:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 14:42:25,784 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:42:25,801 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:42:26,100 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:42:26,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:42:26,108 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:42:26,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:26 BoogieIcfgContainer [2022-11-23 14:42:26,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:42:26,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:42:26,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:42:26,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:42:26,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:42:23" (1/3) ... [2022-11-23 14:42:26,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d9e7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:26, skipping insertion in model container [2022-11-23 14:42:26,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:42:25" (2/3) ... [2022-11-23 14:42:26,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d9e7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:42:26, skipping insertion in model container [2022-11-23 14:42:26,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:26" (3/3) ... [2022-11-23 14:42:26,122 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_31_bad.i [2022-11-23 14:42:26,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:42:26,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:42:26,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:42:26,236 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;@4a7813d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:42:26,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:42:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:42:26,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:42:26,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:26,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:42:26,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 14:42:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:26,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-11-23 14:42:26,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:42:26,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700519260] [2022-11-23 14:42:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:26,289 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 14:42:26,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:42:26,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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 14:42:26,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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 14:42:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:42:26,534 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:42:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:42:26,624 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 14:42:26,629 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:42:26,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 14:42:26,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 14:42:26,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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 14:42:26,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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 14:42:26,852 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:42:26,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:42:26,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:42:26 BoogieIcfgContainer [2022-11-23 14:42:26,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:42:26,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:42:26,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:42:26,939 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:42:26,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:42:26" (3/4) ... [2022-11-23 14:42:26,944 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:42:26,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:42:26,945 INFO L158 Benchmark]: Toolchain (without parser) took 3318.44ms. Allocated memory is still 86.0MB. Free memory was 66.1MB in the beginning and 50.5MB in the end (delta: 15.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-11-23 14:42:26,946 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 39.2MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:42:26,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1668.38ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 41.5MB in the end (delta: 24.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-23 14:42:26,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.39ms. Allocated memory is still 86.0MB. Free memory was 41.5MB in the beginning and 38.3MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:42:26,948 INFO L158 Benchmark]: Boogie Preprocessor took 61.81ms. Allocated memory is still 86.0MB. Free memory was 38.3MB in the beginning and 59.5MB in the end (delta: -21.2MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2022-11-23 14:42:26,949 INFO L158 Benchmark]: RCFGBuilder took 638.80ms. Allocated memory is still 86.0MB. Free memory was 59.5MB in the beginning and 45.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 14:42:26,949 INFO L158 Benchmark]: TraceAbstraction took 824.72ms. Allocated memory is still 86.0MB. Free memory was 44.8MB in the beginning and 50.7MB in the end (delta: -5.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:42:26,950 INFO L158 Benchmark]: Witness Printer took 5.13ms. Allocated memory is still 86.0MB. Free memory was 50.7MB in the beginning and 50.5MB in the end (delta: 213.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:42:26,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 39.2MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1668.38ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 41.5MB in the end (delta: 24.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.39ms. Allocated memory is still 86.0MB. Free memory was 41.5MB in the beginning and 38.3MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.81ms. Allocated memory is still 86.0MB. Free memory was 38.3MB in the beginning and 59.5MB in the end (delta: -21.2MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * RCFGBuilder took 638.80ms. Allocated memory is still 86.0MB. Free memory was 59.5MB in the beginning and 45.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 824.72ms. Allocated memory is still 86.0MB. Free memory was 44.8MB in the beginning and 50.7MB in the end (delta: -5.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.13ms. Allocated memory is still 86.0MB. Free memory was 50.7MB in the beginning and 50.5MB in the end (delta: 213.4kB). 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: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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] [L1576] 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) [L1576] 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] [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] int dataCopy = data; [L1565] int data = dataCopy; [L1567] data-- VAL [data=-2147483648, data=-2147483648, data--=-2147483648, dataCopy=-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: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:42:26,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd17dae4-a619-400e-b66e-3f0db69998ef/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