./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_45_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_45_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur --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 688ad4d5fd82d8d25ee04a380b8cb7ec8cfce77a176f9dae3e918c234f392467 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:27:51,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:27:51,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:27:51,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:27:51,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:27:51,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:27:51,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:27:51,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:27:51,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:27:51,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:27:51,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:27:51,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:27:51,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:27:51,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:27:51,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:27:51,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:27:51,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:27:51,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:27:51,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:27:51,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:27:51,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:27:51,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:27:51,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:27:51,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:27:51,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:27:51,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:27:51,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:27:51,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:27:51,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:27:51,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:27:51,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:27:51,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:27:51,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:27:51,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:27:51,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:27:51,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:27:51,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:27:51,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:27:51,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:27:51,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:27:51,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:27:51,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 22:27:51,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:27:51,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:27:51,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:27:51,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:27:51,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:27:51,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:27:51,946 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:27:51,947 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:27:51,947 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:27:51,947 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:27:51,948 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:27:51,948 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:27:51,948 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:27:51,949 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:27:51,949 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:27:51,949 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:27:51,949 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:27:51,949 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:27:51,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:27:51,950 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:27:51,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:27:51,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:27:51,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:27:51,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:27:51,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:27:51,952 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:27:51,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:27:51,952 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:27:51,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:27:51,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:27:51,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:27:51,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:27:51,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:27:51,964 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:27:51,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:27:51,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:27:51,964 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:27:51,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:27:51,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:27:51,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:27:51,965 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_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 688ad4d5fd82d8d25ee04a380b8cb7ec8cfce77a176f9dae3e918c234f392467 [2022-11-25 22:27:52,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:27:52,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:27:52,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:27:52,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:27:52,302 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:27:52,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_45_bad.i [2022-11-25 22:27:55,400 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:27:55,868 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:27:55,869 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_45_bad.i [2022-11-25 22:27:55,906 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/data/6cdf239e5/04626e1da75e4e79a7496dd326706406/FLAGf5a9c1dc7 [2022-11-25 22:27:55,928 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/data/6cdf239e5/04626e1da75e4e79a7496dd326706406 [2022-11-25 22:27:55,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:27:55,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:27:55,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:27:55,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:27:55,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:27:55,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:27:55" (1/1) ... [2022-11-25 22:27:55,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630985f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:55, skipping insertion in model container [2022-11-25 22:27:55,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:27:55" (1/1) ... [2022-11-25 22:27:55,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:27:56,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:27:56,466 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:27:57,069 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:27:57,083 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:27:57,087 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:27:57,100 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:27:57,101 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:27:57,144 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:27:57,153 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:27:57,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:27:57,173 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:27:57,206 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:27:57,306 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:27:57,308 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:27:57,309 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:27:57,311 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:27:57,312 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:27:57,318 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:27:57,319 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:27:57,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:27:57,441 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:27:57,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57 WrapperNode [2022-11-25 22:27:57,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:27:57,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:27:57,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:27:57,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:27:57,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,501 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2022-11-25 22:27:57,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:27:57,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:27:57,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:27:57,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:27:57,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,528 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:27:57,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:27:57,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:27:57,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:27:57,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (1/1) ... [2022-11-25 22:27:57,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:27:57,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:57,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:27:57,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:27:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 22:27:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 22:27:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 22:27:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:27:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 22:27:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:27:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:27:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:27:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:27:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 22:27:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:27:57,830 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:27:57,832 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:27:58,015 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:27:58,120 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:27:58,127 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:27:58,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:27:58 BoogieIcfgContainer [2022-11-25 22:27:58,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:27:58,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:27:58,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:27:58,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:27:58,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:27:55" (1/3) ... [2022-11-25 22:27:58,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdf4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:27:58, skipping insertion in model container [2022-11-25 22:27:58,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:57" (2/3) ... [2022-11-25 22:27:58,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdf4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:27:58, skipping insertion in model container [2022-11-25 22:27:58,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:27:58" (3/3) ... [2022-11-25 22:27:58,148 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_45_bad.i [2022-11-25 22:27:58,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:27:58,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:27:58,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:27:58,229 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;@51103d21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:27:58,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:27:58,233 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) [2022-11-25 22:27:58,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:27:58,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:58,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:58,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 22:27:58,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:58,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1634006193, now seen corresponding path program 1 times [2022-11-25 22:27:58,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:27:58,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874064766] [2022-11-25 22:27:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:58,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:27:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:27:58,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:27:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:27:58,475 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 22:27:58,477 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:27:58,478 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 22:27:58,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 22:27:58,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:27:58,487 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 22:27:58,492 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:27:58,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:27:58 BoogieIcfgContainer [2022-11-25 22:27:58,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:27:58,518 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:27:58,518 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:27:58,519 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:27:58,519 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:27:58" (3/4) ... [2022-11-25 22:27:58,523 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:27:58,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:27:58,524 INFO L158 Benchmark]: Toolchain (without parser) took 2592.00ms. Allocated memory is still 186.6MB. Free memory was 153.3MB in the beginning and 132.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-11-25 22:27:58,525 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:27:58,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1507.51ms. Allocated memory is still 186.6MB. Free memory was 153.3MB in the beginning and 92.5MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-11-25 22:27:58,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.14ms. Allocated memory is still 186.6MB. Free memory was 92.5MB in the beginning and 89.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:27:58,527 INFO L158 Benchmark]: Boogie Preprocessor took 30.33ms. Allocated memory is still 186.6MB. Free memory was 89.2MB in the beginning and 87.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:27:58,528 INFO L158 Benchmark]: RCFGBuilder took 596.88ms. Allocated memory is still 186.6MB. Free memory was 87.9MB in the beginning and 150.6MB in the end (delta: -62.7MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2022-11-25 22:27:58,529 INFO L158 Benchmark]: TraceAbstraction took 385.16ms. Allocated memory is still 186.6MB. Free memory was 149.7MB in the beginning and 133.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 22:27:58,529 INFO L158 Benchmark]: Witness Printer took 4.97ms. Allocated memory is still 186.6MB. Free memory was 133.0MB in the beginning and 132.6MB in the end (delta: 339.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:27:58,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1507.51ms. Allocated memory is still 186.6MB. Free memory was 153.3MB in the beginning and 92.5MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.14ms. Allocated memory is still 186.6MB. Free memory was 92.5MB in the beginning and 89.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.33ms. Allocated memory is still 186.6MB. Free memory was 89.2MB in the beginning and 87.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 596.88ms. Allocated memory is still 186.6MB. Free memory was 87.9MB in the beginning and 150.6MB in the end (delta: -62.7MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 385.16ms. Allocated memory is still 186.6MB. Free memory was 149.7MB in the beginning and 133.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.97ms. Allocated memory is still 186.6MB. Free memory was 133.0MB in the beginning and 132.6MB in the end (delta: 339.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int CWE191_Integer_Underflow__int_fgets_postdec_45_badData; [L1549] static int CWE191_Integer_Underflow__int_fgets_postdec_45_goodG2BData; [L1550] static int CWE191_Integer_Underflow__int_fgets_postdec_45_goodB2GData; [L1581] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_45_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741829:1073741827}, argv={1073741829:1073741827}, CWE191_Integer_Underflow__int_fgets_postdec_45_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_45_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1575] CWE191_Integer_Underflow__int_fgets_postdec_45_badData = data [L1576] CALL badSink() [L1553] int data = CWE191_Integer_Underflow__int_fgets_postdec_45_badData; [L1555] data-- VAL [CWE191_Integer_Underflow__int_fgets_postdec_45_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_postdec_45_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodG2BData=0, data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s 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 [2022-11-25 22:27:58,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/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_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_45_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur --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 688ad4d5fd82d8d25ee04a380b8cb7ec8cfce77a176f9dae3e918c234f392467 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:28:01,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:28:01,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:28:01,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:28:01,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:28:01,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:28:01,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:28:01,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:28:01,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:28:01,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:28:01,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:28:01,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:28:01,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:28:01,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:28:01,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:28:01,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:28:01,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:28:01,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:28:01,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:28:01,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:28:01,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:28:01,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:28:01,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:28:01,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:28:01,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:28:01,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:28:01,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:28:01,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:28:01,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:28:01,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:28:01,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:28:01,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:28:01,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:28:01,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:28:01,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:28:01,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:28:01,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:28:01,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:28:01,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:28:01,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:28:01,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:28:01,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-25 22:28:01,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:28:01,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:28:01,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:28:01,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:28:01,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:28:01,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:28:01,679 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:28:01,679 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:28:01,679 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:28:01,680 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:28:01,681 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:28:01,681 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:28:01,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:28:01,683 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:28:01,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:28:01,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:28:01,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:28:01,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:28:01,684 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:28:01,684 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:28:01,684 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:28:01,685 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:28:01,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:28:01,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:28:01,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:28:01,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:28:01,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:28:01,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:28:01,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:28:01,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:28:01,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:28:01,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:28:01,688 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:28:01,688 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:01,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:28:01,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:28:01,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:28:01,689 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_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 688ad4d5fd82d8d25ee04a380b8cb7ec8cfce77a176f9dae3e918c234f392467 [2022-11-25 22:28:02,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:28:02,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:28:02,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:28:02,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:28:02,259 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:28:02,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_45_bad.i [2022-11-25 22:28:05,697 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:28:06,115 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:28:06,115 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_45_bad.i [2022-11-25 22:28:06,135 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/data/8cb5b1f5c/6222f81e33f94a71921e925b411291b7/FLAG256730779 [2022-11-25 22:28:06,159 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/data/8cb5b1f5c/6222f81e33f94a71921e925b411291b7 [2022-11-25 22:28:06,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:28:06,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:28:06,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:28:06,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:28:06,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:28:06,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:28:06" (1/1) ... [2022-11-25 22:28:06,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c74915a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:06, skipping insertion in model container [2022-11-25 22:28:06,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:28:06" (1/1) ... [2022-11-25 22:28:06,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:28:06,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:28:06,666 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:28:07,168 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:28:07,184 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:28:07,186 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:28:07,189 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:28:07,190 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:28:07,222 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:28:07,226 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:28:07,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:28:07,246 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:28:07,281 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:28:07,397 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:28:07,401 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:28:07,408 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:28:07,411 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:28:07,415 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:28:07,421 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:28:07,435 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:28:07,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:28:07,662 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:28:07,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07 WrapperNode [2022-11-25 22:28:07,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:28:07,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:28:07,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:28:07,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:28:07,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,766 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-11-25 22:28:07,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:28:07,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:28:07,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:28:07,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:28:07,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,830 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:28:07,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:28:07,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:28:07,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:28:07,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (1/1) ... [2022-11-25 22:28:07,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:28:07,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:28:07,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:28:07,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:28:07,967 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 22:28:07,968 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 22:28:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 22:28:07,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:28:07,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 22:28:07,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:28:07,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:28:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:28:07,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:28:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 22:28:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 22:28:08,213 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:28:08,215 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:28:08,528 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:28:08,535 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:28:08,535 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:28:08,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:28:08 BoogieIcfgContainer [2022-11-25 22:28:08,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:28:08,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:28:08,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:28:08,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:28:08,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:28:06" (1/3) ... [2022-11-25 22:28:08,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b930b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:28:08, skipping insertion in model container [2022-11-25 22:28:08,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:28:07" (2/3) ... [2022-11-25 22:28:08,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b930b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:28:08, skipping insertion in model container [2022-11-25 22:28:08,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:28:08" (3/3) ... [2022-11-25 22:28:08,569 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_45_bad.i [2022-11-25 22:28:08,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:28:08,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:28:08,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:28:08,680 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;@92c44f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:28:08,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:28:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:28:08,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 22:28:08,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:08,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:08,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 22:28:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-25 22:28:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:08,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827399873] [2022-11-25 22:28:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:08,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:28:08,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:08,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:28:08,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 22:28:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:28:08,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:28:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:28:09,085 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 22:28:09,088 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:28:09,090 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 22:28:09,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 22:28:09,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:09,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:28:09,315 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 22:28:09,324 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:28:09,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:28:09 BoogieIcfgContainer [2022-11-25 22:28:09,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:28:09,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:28:09,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:28:09,389 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:28:09,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:28:08" (3/4) ... [2022-11-25 22:28:09,396 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:28:09,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:28:09,398 INFO L158 Benchmark]: Toolchain (without parser) took 3234.84ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 33.1MB in the beginning and 40.0MB in the end (delta: -6.9MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-11-25 22:28:09,399 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 67.1MB. Free memory was 44.1MB in the beginning and 44.0MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:28:09,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1499.89ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 33.0MB in the beginning and 51.8MB in the end (delta: -18.8MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2022-11-25 22:28:09,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.59ms. Allocated memory is still 90.2MB. Free memory was 51.8MB in the beginning and 49.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 22:28:09,408 INFO L158 Benchmark]: Boogie Preprocessor took 74.42ms. Allocated memory is still 90.2MB. Free memory was 49.0MB in the beginning and 46.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:28:09,410 INFO L158 Benchmark]: RCFGBuilder took 709.45ms. Allocated memory is still 90.2MB. Free memory was 46.9MB in the beginning and 58.4MB in the end (delta: -11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 22:28:09,411 INFO L158 Benchmark]: TraceAbstraction took 830.24ms. Allocated memory is still 90.2MB. Free memory was 57.7MB in the beginning and 40.5MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 22:28:09,412 INFO L158 Benchmark]: Witness Printer took 8.00ms. Allocated memory is still 90.2MB. Free memory is still 40.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:28:09,416 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 67.1MB. Free memory was 44.1MB in the beginning and 44.0MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1499.89ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 33.0MB in the beginning and 51.8MB in the end (delta: -18.8MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.59ms. Allocated memory is still 90.2MB. Free memory was 51.8MB in the beginning and 49.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.42ms. Allocated memory is still 90.2MB. Free memory was 49.0MB in the beginning and 46.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 709.45ms. Allocated memory is still 90.2MB. Free memory was 46.9MB in the beginning and 58.4MB in the end (delta: -11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 830.24ms. Allocated memory is still 90.2MB. Free memory was 57.7MB in the beginning and 40.5MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 8.00ms. Allocated memory is still 90.2MB. Free memory is still 40.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int CWE191_Integer_Underflow__int_fgets_postdec_45_badData; [L1549] static int CWE191_Integer_Underflow__int_fgets_postdec_45_goodG2BData; [L1550] static int CWE191_Integer_Underflow__int_fgets_postdec_45_goodB2GData; VAL [CWE191_Integer_Underflow__int_fgets_postdec_45_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_45_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, CWE191_Integer_Underflow__int_fgets_postdec_45_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_45_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1575] CWE191_Integer_Underflow__int_fgets_postdec_45_badData = data [L1576] CALL badSink() [L1553] int data = CWE191_Integer_Underflow__int_fgets_postdec_45_badData; [L1555] data-- VAL [CWE191_Integer_Underflow__int_fgets_postdec_45_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_postdec_45_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_postdec_45_goodG2BData=0, data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 22:28:09,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8d9018-4cf8-465b-94ef-355ec5aa6e00/bin/utaipan-ByfvJB40ur/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