./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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_735f9666-822c-4f4b-aa9a-6f7d2c570055/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 2114354133268dfafe9d28136595d928edb01ed818db8ce52e2a575acd455d7a --- 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 [2022-11-26 00:35:30,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:35:30,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:35:30,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:35:30,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:35:30,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:35:30,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:35:30,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:35:30,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:35:30,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:35:30,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:35:30,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:35:30,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:35:30,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:35:30,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:35:30,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:35:30,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:35:30,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:35:30,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:35:30,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:35:30,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:35:30,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:35:30,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:35:30,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:35:30,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:35:30,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:35:30,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:35:30,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:35:30,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:35:30,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:35:30,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:35:30,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:35:30,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:35:30,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:35:30,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:35:30,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:35:30,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:35:30,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:35:30,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:35:30,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:35:30,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:35:30,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 00:35:31,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:35:31,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:35:31,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:35:31,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:35:31,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:35:31,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:35:31,009 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:35:31,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:35:31,010 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:35:31,010 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:35:31,011 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:35:31,012 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:35:31,012 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:35:31,012 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:35:31,013 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:35:31,013 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:35:31,013 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:35:31,013 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:35:31,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:35:31,015 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:35:31,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:35:31,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:35:31,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:35:31,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:35:31,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:35:31,016 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:35:31,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:35:31,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:35:31,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:35:31,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:35:31,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:35:31,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:31,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:35:31,019 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:35:31,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:35:31,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:35:31,020 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:35:31,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:35:31,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:35:31,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:35:31,021 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_735f9666-822c-4f4b-aa9a-6f7d2c570055/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2114354133268dfafe9d28136595d928edb01ed818db8ce52e2a575acd455d7a [2022-11-26 00:35:31,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:35:31,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:35:31,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:35:31,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:35:31,427 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:35:31,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2022-11-26 00:35:34,623 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:35:35,039 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:35:35,039 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2022-11-26 00:35:35,062 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/data/443e2c5b4/a79587c30df844c2b5f95471ef80f4ef/FLAGd9f86c8b3 [2022-11-26 00:35:35,077 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/data/443e2c5b4/a79587c30df844c2b5f95471ef80f4ef [2022-11-26 00:35:35,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:35:35,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:35:35,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:35,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:35:35,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:35:35,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c6ec38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:35, skipping insertion in model container [2022-11-26 00:35:35,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:35" (1/1) ... [2022-11-26 00:35:35,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:35:35,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:35:35,619 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:35:36,222 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:36,230 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:35:36,232 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:35:36,235 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:35:36,235 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:35:36,283 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:35:36,286 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:35:36,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:36,303 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:35:36,323 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:35:36,387 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:36,389 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:35:36,391 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:35:36,394 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:35:36,395 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:35:36,417 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:35:36,419 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:35:36,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:36,631 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:35:36,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36 WrapperNode [2022-11-26 00:35:36,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:36,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:36,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:35:36,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:35:36,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,747 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-11-26 00:35:36,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:36,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:35:36,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:35:36,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:35:36,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,801 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:35:36,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:35:36,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:35:36,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:35:36,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (1/1) ... [2022-11-26 00:35:36,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:36,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:35:36,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:35:36,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:35:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:35:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:35:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:35:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:35:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-26 00:35:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:35:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:35:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:35:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:35:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:35:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:35:37,157 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:35:37,159 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:35:37,295 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:35:37,352 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:35:37,352 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:35:37,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:37 BoogieIcfgContainer [2022-11-26 00:35:37,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:35:37,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:35:37,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:35:37,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:35:37,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:35:35" (1/3) ... [2022-11-26 00:35:37,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7d1e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:37, skipping insertion in model container [2022-11-26 00:35:37,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:36" (2/3) ... [2022-11-26 00:35:37,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7d1e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:37, skipping insertion in model container [2022-11-26 00:35:37,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:37" (3/3) ... [2022-11-26 00:35:37,363 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2022-11-26 00:35:37,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:35:37,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:35:37,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:35:37,459 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;@3e5d3b01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:35:37,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:35:37,464 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) [2022-11-26 00:35:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:35:37,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:37,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:37,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:35:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:37,484 INFO L85 PathProgramCache]: Analyzing trace with hash 108804142, now seen corresponding path program 1 times [2022-11-26 00:35:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:37,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331245347] [2022-11-26 00:35:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:35:37,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:35:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:35:37,776 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:35:37,781 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:35:37,783 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:35:37,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:35:37,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:35:37,792 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:35:37,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:35:37,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:35:37 BoogieIcfgContainer [2022-11-26 00:35:37,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:35:37,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:35:37,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:35:37,844 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:35:37,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:37" (3/4) ... [2022-11-26 00:35:37,848 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:35:37,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:35:37,850 INFO L158 Benchmark]: Toolchain (without parser) took 2768.89ms. Allocated memory is still 159.4MB. Free memory was 124.7MB in the beginning and 88.3MB in the end (delta: 36.5MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2022-11-26 00:35:37,851 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:37,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1549.78ms. Allocated memory is still 159.4MB. Free memory was 124.7MB in the beginning and 126.0MB in the end (delta: -1.3MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. [2022-11-26 00:35:37,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.24ms. Allocated memory is still 159.4MB. Free memory was 126.0MB in the beginning and 123.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:35:37,858 INFO L158 Benchmark]: Boogie Preprocessor took 71.73ms. Allocated memory is still 159.4MB. Free memory was 123.2MB in the beginning and 121.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:35:37,859 INFO L158 Benchmark]: RCFGBuilder took 533.74ms. Allocated memory is still 159.4MB. Free memory was 121.8MB in the beginning and 107.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:35:37,860 INFO L158 Benchmark]: TraceAbstraction took 484.47ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 89.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-26 00:35:37,861 INFO L158 Benchmark]: Witness Printer took 5.44ms. Allocated memory is still 159.4MB. Free memory was 89.0MB in the beginning and 88.3MB in the end (delta: 749.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:35:37,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1549.78ms. Allocated memory is still 159.4MB. Free memory was 124.7MB in the beginning and 126.0MB in the end (delta: -1.3MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 115.24ms. Allocated memory is still 159.4MB. Free memory was 126.0MB in the beginning and 123.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.73ms. Allocated memory is still 159.4MB. Free memory was 123.2MB in the beginning and 121.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.74ms. Allocated memory is still 159.4MB. Free memory was 121.8MB in the beginning and 107.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 484.47ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 89.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.44ms. Allocated memory is still 159.4MB. Free memory was 89.0MB in the beginning and 88.3MB in the end (delta: 749.5kB). Peak memory consumption was 2.1MB. 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: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_fgets_postdec_68_badData; [L1550] int CWE191_Integer_Underflow__int_fgets_postdec_68_goodB2GData; [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_68_goodB2GData=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) [L1573] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, CWE191_Integer_Underflow__int_fgets_postdec_68_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_68_goodB2GData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] CALL CWE191_Integer_Underflow__int_fgets_postdec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1567] CWE191_Integer_Underflow__int_fgets_postdec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_postdec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_postdec_68_badData; [L1585] data-- VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_postdec_68_goodB2GData=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: 1585]: 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 [2022-11-26 00:35:37,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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_735f9666-822c-4f4b-aa9a-6f7d2c570055/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 2114354133268dfafe9d28136595d928edb01ed818db8ce52e2a575acd455d7a --- 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 [2022-11-26 00:35:40,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:35:40,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:35:40,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:35:40,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:35:40,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:35:40,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:35:40,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:35:40,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:35:40,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:35:40,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:35:40,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:35:40,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:35:40,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:35:40,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:35:40,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:35:40,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:35:40,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:35:40,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:35:40,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:35:40,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:35:40,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:35:40,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:35:40,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:35:40,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:35:40,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:35:40,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:35:40,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:35:40,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:35:40,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:35:40,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:35:40,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:35:40,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:35:40,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:35:40,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:35:40,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:35:40,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:35:40,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:35:40,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:35:40,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:35:40,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:35:40,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-26 00:35:40,924 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:35:40,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:35:40,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:35:40,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:35:40,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:35:40,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:35:40,929 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:35:40,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:35:40,929 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:35:40,929 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:35:40,931 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:35:40,931 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:35:40,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:35:40,932 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:35:40,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:35:40,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:35:40,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:35:40,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:35:40,934 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:35:40,934 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:35:40,934 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:35:40,935 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:35:40,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:35:40,935 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:35:40,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:35:40,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:35:40,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:35:40,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:35:40,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:40,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:35:40,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:35:40,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:35:40,938 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:35:40,938 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:35:40,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:35:40,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:35:40,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:35:40,940 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_735f9666-822c-4f4b-aa9a-6f7d2c570055/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2114354133268dfafe9d28136595d928edb01ed818db8ce52e2a575acd455d7a [2022-11-26 00:35:41,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:35:41,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:35:41,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:35:41,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:35:41,395 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:35:41,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2022-11-26 00:35:44,492 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:35:44,906 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:35:44,907 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2022-11-26 00:35:44,930 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/data/215c74a50/159c5665f9ca49e69ffbf3d467ab390a/FLAG300d3f962 [2022-11-26 00:35:44,955 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/data/215c74a50/159c5665f9ca49e69ffbf3d467ab390a [2022-11-26 00:35:44,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:35:44,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:35:44,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:44,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:35:44,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:35:44,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:44" (1/1) ... [2022-11-26 00:35:44,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224532f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:44, skipping insertion in model container [2022-11-26 00:35:44,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:35:44" (1/1) ... [2022-11-26 00:35:44,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:35:45,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:35:45,479 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:35:46,078 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:46,084 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:35:46,086 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:35:46,089 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:35:46,090 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:35:46,126 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:35:46,135 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:35:46,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:46,183 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:35:46,221 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:35:46,334 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-26 00:35:46,345 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:35:46,346 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-26 00:35:46,349 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:35:46,350 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-26 00:35:46,357 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-26 00:35:46,364 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-26 00:35:46,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:35:46,555 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:35:46,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46 WrapperNode [2022-11-26 00:35:46,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:35:46,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:46,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:35:46,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:35:46,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,625 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2022-11-26 00:35:46,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:35:46,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:35:46,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:35:46,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:35:46,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:35:46,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:35:46,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:35:46,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:35:46,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (1/1) ... [2022-11-26 00:35:46,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:35:46,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:35:46,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:35:46,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:35:46,765 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-26 00:35:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-26 00:35:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-26 00:35:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:35:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:35:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:35:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:35:46,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:35:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:35:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-26 00:35:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-26 00:35:46,984 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:35:46,986 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:35:47,168 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:35:47,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:35:47,175 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:35:47,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:47 BoogieIcfgContainer [2022-11-26 00:35:47,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:35:47,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:35:47,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:35:47,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:35:47,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:35:44" (1/3) ... [2022-11-26 00:35:47,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d1f3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:47, skipping insertion in model container [2022-11-26 00:35:47,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:35:46" (2/3) ... [2022-11-26 00:35:47,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d1f3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:35:47, skipping insertion in model container [2022-11-26 00:35:47,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:47" (3/3) ... [2022-11-26 00:35:47,188 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2022-11-26 00:35:47,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:35:47,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:35:47,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:35:47,295 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;@3541020d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:35:47,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:35:47,300 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) [2022-11-26 00:35:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:35:47,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:47,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:47,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:35:47,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:47,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-26 00:35:47,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:35:47,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400000373] [2022-11-26 00:35:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:47,345 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 [2022-11-26 00:35:47,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:35:47,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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) [2022-11-26 00:35:47,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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 [2022-11-26 00:35:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:35:47,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:35:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:35:47,675 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 00:35:47,677 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:35:47,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-26 00:35:47,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-26 00:35:47,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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)] Ended with exit code 0 [2022-11-26 00:35:47,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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 [2022-11-26 00:35:47,909 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:35:47,920 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:35:47,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:35:47 BoogieIcfgContainer [2022-11-26 00:35:47,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:35:47,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:35:47,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:35:47,987 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:35:47,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:35:47" (3/4) ... [2022-11-26 00:35:47,992 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:35:47,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:35:47,999 INFO L158 Benchmark]: Toolchain (without parser) took 3038.75ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 48.4MB in the beginning and 59.7MB in the end (delta: -11.3MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-11-26 00:35:48,000 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:48,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1592.20ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 48.1MB in the beginning and 63.7MB in the end (delta: -15.6MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2022-11-26 00:35:48,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.53ms. Allocated memory is still 100.7MB. Free memory was 63.7MB in the beginning and 60.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:35:48,004 INFO L158 Benchmark]: Boogie Preprocessor took 34.07ms. Allocated memory is still 100.7MB. Free memory was 60.7MB in the beginning and 58.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:35:48,006 INFO L158 Benchmark]: RCFGBuilder took 516.21ms. Allocated memory is still 100.7MB. Free memory was 58.6MB in the beginning and 44.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:35:48,007 INFO L158 Benchmark]: TraceAbstraction took 805.71ms. Allocated memory is still 100.7MB. Free memory was 43.9MB in the beginning and 60.3MB in the end (delta: -16.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:48,010 INFO L158 Benchmark]: Witness Printer took 10.76ms. Allocated memory is still 100.7MB. Free memory was 60.3MB in the beginning and 59.7MB in the end (delta: 601.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:35:48,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1592.20ms. Allocated memory was 71.3MB in the beginning and 100.7MB in the end (delta: 29.4MB). Free memory was 48.1MB in the beginning and 63.7MB in the end (delta: -15.6MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.53ms. Allocated memory is still 100.7MB. Free memory was 63.7MB in the beginning and 60.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.07ms. Allocated memory is still 100.7MB. Free memory was 60.7MB in the beginning and 58.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 516.21ms. Allocated memory is still 100.7MB. Free memory was 58.6MB in the beginning and 44.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 805.71ms. Allocated memory is still 100.7MB. Free memory was 43.9MB in the beginning and 60.3MB in the end (delta: -16.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 10.76ms. Allocated memory is still 100.7MB. Free memory was 60.3MB in the beginning and 59.7MB in the end (delta: 601.6kB). 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: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1549] int CWE191_Integer_Underflow__int_fgets_postdec_68_goodG2BData; VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_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] [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_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) [L1573] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, CWE191_Integer_Underflow__int_fgets_postdec_68_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] [L1574] CALL CWE191_Integer_Underflow__int_fgets_postdec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1567] CWE191_Integer_Underflow__int_fgets_postdec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_postdec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_postdec_68_badData; [L1585] data-- VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_postdec_68_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: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:35:48,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_735f9666-822c-4f4b-aa9a-6f7d2c570055/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