./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e69f95b0fef10f16491ef0643f356fc9a423cbadeacb884cb09bfeb3b1c56f60 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:20:53,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:20:53,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:20:53,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:20:53,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:20:53,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:20:53,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:20:53,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:20:53,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:20:53,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:20:53,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:20:53,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:20:53,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:20:53,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:20:53,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:20:53,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:20:53,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:20:53,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:20:53,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:20:53,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:20:53,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:20:53,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:20:53,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:20:53,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:20:53,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:20:53,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:20:53,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:20:53,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:20:53,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:20:53,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:20:53,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:20:53,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:20:53,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:20:53,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:20:53,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:20:53,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:20:53,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:20:53,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:20:53,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:20:53,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:20:53,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:20:53,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:20:53,856 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:20:53,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:20:53,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:20:53,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:20:53,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:20:53,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:20:53,858 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:20:53,859 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:20:53,859 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:20:53,859 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:20:53,860 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:20:53,861 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:20:53,861 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:20:53,861 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:20:53,861 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:20:53,862 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:20:53,862 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:20:53,862 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:20:53,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:20:53,864 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:20:53,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:20:53,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:20:53,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:20:53,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:20:53,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:20:53,865 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:20:53,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:20:53,866 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:20:53,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:20:53,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:20:53,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:20:53,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:20:53,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:20:53,868 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:20:53,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:20:53,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:20:53,868 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:20:53,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:20:53,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:20:53,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:20:53,869 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_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e69f95b0fef10f16491ef0643f356fc9a423cbadeacb884cb09bfeb3b1c56f60 [2022-11-23 15:20:54,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:20:54,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:20:54,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:20:54,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:20:54,239 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:20:54,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_34_bad.i [2022-11-23 15:20:57,330 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:20:57,732 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:20:57,732 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_34_bad.i [2022-11-23 15:20:57,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/data/e6a17e25b/110ca42d415640b582ea160553c26102/FLAGc1ecc4d0b [2022-11-23 15:20:57,783 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/data/e6a17e25b/110ca42d415640b582ea160553c26102 [2022-11-23 15:20:57,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:20:57,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:20:57,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:20:57,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:20:57,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:20:57,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:57" (1/1) ... [2022-11-23 15:20:57,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e12992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:57, skipping insertion in model container [2022-11-23 15:20:57,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:57" (1/1) ... [2022-11-23 15:20:57,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:20:57,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:20:58,374 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:20:58,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:20:58,974 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:20:58,993 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:20:59,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:20:59,218 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:20:59,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59 WrapperNode [2022-11-23 15:20:59,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:20:59,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:20:59,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:20:59,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:20:59,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,302 INFO L138 Inliner]: procedures = 499, calls = 58, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2022-11-23 15:20:59,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:20:59,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:20:59,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:20:59,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:20:59,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:20:59,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:20:59,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:20:59,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:20:59,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (1/1) ... [2022-11-23 15:20:59,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:20:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:20:59,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:20:59,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:20:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:20:59,447 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:20:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:20:59,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:20:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:20:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:20:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:20:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:20:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:20:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:20:59,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:20:59,646 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:20:59,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:20:59,911 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:21:00,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:21:00,048 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:21:00,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:21:00 BoogieIcfgContainer [2022-11-23 15:21:00,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:21:00,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:21:00,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:21:00,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:21:00,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:20:57" (1/3) ... [2022-11-23 15:21:00,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13714984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:21:00, skipping insertion in model container [2022-11-23 15:21:00,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:59" (2/3) ... [2022-11-23 15:21:00,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13714984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:21:00, skipping insertion in model container [2022-11-23 15:21:00,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:21:00" (3/3) ... [2022-11-23 15:21:00,064 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_multiply_34_bad.i [2022-11-23 15:21:00,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:21:00,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:21:00,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:21:00,154 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;@14b094ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:21:00,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:21:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:21:00,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:21:00,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:00,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:00,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:21:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:00,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1702117703, now seen corresponding path program 1 times [2022-11-23 15:21:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:00,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415541719] [2022-11-23 15:21:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:00,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:21:00,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:21:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:21:00,523 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:21:00,525 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:21:00,527 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:21:00,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:21:00,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:21:00,534 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:21:00,539 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:21:00,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:21:00 BoogieIcfgContainer [2022-11-23 15:21:00,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:21:00,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:21:00,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:21:00,567 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:21:00,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:21:00" (3/4) ... [2022-11-23 15:21:00,571 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:21:00,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:21:00,572 INFO L158 Benchmark]: Toolchain (without parser) took 2783.96ms. Allocated memory was 155.2MB in the beginning and 232.8MB in the end (delta: 77.6MB). Free memory was 119.2MB in the beginning and 143.6MB in the end (delta: -24.5MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. [2022-11-23 15:21:00,573 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory is still 102.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:21:00,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1427.45ms. Allocated memory was 155.2MB in the beginning and 232.8MB in the end (delta: 77.6MB). Free memory was 119.2MB in the beginning and 192.9MB in the end (delta: -73.7MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. [2022-11-23 15:21:00,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.32ms. Allocated memory is still 232.8MB. Free memory was 192.9MB in the beginning and 189.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:21:00,575 INFO L158 Benchmark]: Boogie Preprocessor took 45.20ms. Allocated memory is still 232.8MB. Free memory was 189.8MB in the beginning and 188.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:21:00,576 INFO L158 Benchmark]: RCFGBuilder took 702.75ms. Allocated memory is still 232.8MB. Free memory was 188.7MB in the beginning and 167.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 15:21:00,576 INFO L158 Benchmark]: TraceAbstraction took 511.53ms. Allocated memory is still 232.8MB. Free memory was 167.8MB in the beginning and 144.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-23 15:21:00,577 INFO L158 Benchmark]: Witness Printer took 4.90ms. Allocated memory is still 232.8MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:21:00,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory is still 102.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1427.45ms. Allocated memory was 155.2MB in the beginning and 232.8MB in the end (delta: 77.6MB). Free memory was 119.2MB in the beginning and 192.9MB in the end (delta: -73.7MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.32ms. Allocated memory is still 232.8MB. Free memory was 192.9MB in the beginning and 189.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.20ms. Allocated memory is still 232.8MB. Free memory was 189.8MB in the beginning and 188.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 702.75ms. Allocated memory is still 232.8MB. Free memory was 188.7MB in the beginning and 167.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 511.53ms. Allocated memory is still 232.8MB. Free memory was 167.8MB in the beginning and 144.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.90ms. Allocated memory is still 232.8MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseXor at line 1558, overapproximation of bitwiseAnd at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1572] CALL printLine("Calling bad()...") VAL [#in~line={2:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1572] RET printLine("Calling bad()...") VAL [#in~argv={1073741827:1073741826}, argc=1073741825, argv={1073741827:1073741826}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=1073741825] [L1573] CALL CWE191_Integer_Underflow__int_rand_multiply_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_rand_multiply_34_unionType myUnion; [L1557] data = 0 [L1558] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1558] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1558] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1559] myUnion.unionFirst = data [L1561] EXPR myUnion.unionSecond [L1561] int data = myUnion.unionSecond; [L1562] COND TRUE data < 0 VAL [data=-1073741825, data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={5:0}] [L1564] data * 2 VAL [data=-1073741825, data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={5:0}] - UnprovableResult [Line: 1564]: 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, 14 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=14occurred 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, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:21:00,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e69f95b0fef10f16491ef0643f356fc9a423cbadeacb884cb09bfeb3b1c56f60 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:21:02,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:21:02,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:21:02,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:21:02,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:21:02,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:21:03,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:21:03,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:21:03,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:21:03,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:21:03,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:21:03,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:21:03,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:21:03,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:21:03,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:21:03,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:21:03,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:21:03,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:21:03,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:21:03,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:21:03,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:21:03,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:21:03,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:21:03,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:21:03,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:21:03,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:21:03,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:21:03,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:21:03,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:21:03,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:21:03,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:21:03,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:21:03,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:21:03,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:21:03,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:21:03,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:21:03,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:21:03,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:21:03,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:21:03,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:21:03,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:21:03,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 15:21:03,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:21:03,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:21:03,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:21:03,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:21:03,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:21:03,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:21:03,127 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:21:03,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:21:03,127 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:21:03,127 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:21:03,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:21:03,129 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:21:03,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:21:03,130 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:21:03,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:21:03,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:21:03,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:21:03,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:21:03,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:21:03,131 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:21:03,131 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:21:03,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:21:03,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:21:03,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:21:03,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:21:03,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:21:03,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:21:03,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:21:03,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:21:03,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:21:03,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:21:03,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:21:03,133 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:21:03,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:21:03,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:21:03,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:21:03,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:21:03,134 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_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e69f95b0fef10f16491ef0643f356fc9a423cbadeacb884cb09bfeb3b1c56f60 [2022-11-23 15:21:03,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:21:03,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:21:03,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:21:03,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:21:03,501 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:21:03,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_34_bad.i [2022-11-23 15:21:06,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:21:07,098 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:21:07,099 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_multiply_34_bad.i [2022-11-23 15:21:07,128 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/data/0258cb267/231508b743b541a3ae48dde7e8cf1ddb/FLAGebb542b33 [2022-11-23 15:21:07,151 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/data/0258cb267/231508b743b541a3ae48dde7e8cf1ddb [2022-11-23 15:21:07,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:21:07,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:21:07,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:21:07,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:21:07,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:21:07,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:21:07" (1/1) ... [2022-11-23 15:21:07,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d03615d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:07, skipping insertion in model container [2022-11-23 15:21:07,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:21:07" (1/1) ... [2022-11-23 15:21:07,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:21:07,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:21:07,753 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:21:08,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:21:08,215 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:21:08,237 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:21:08,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:21:08,527 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:21:08,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08 WrapperNode [2022-11-23 15:21:08,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:21:08,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:21:08,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:21:08,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:21:08,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,616 INFO L138 Inliner]: procedures = 504, calls = 58, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2022-11-23 15:21:08,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:21:08,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:21:08,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:21:08,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:21:08,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:21:08,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:21:08,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:21:08,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:21:08,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (1/1) ... [2022-11-23 15:21:08,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:21:08,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:08,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:21:08,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:21:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:21:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:21:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:21:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:21:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:21:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:21:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:21:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 15:21:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:21:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 15:21:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:21:08,919 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:21:08,921 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:21:09,090 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:21:09,096 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:21:09,096 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:21:09,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:21:09 BoogieIcfgContainer [2022-11-23 15:21:09,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:21:09,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:21:09,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:21:09,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:21:09,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:21:07" (1/3) ... [2022-11-23 15:21:09,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dcb62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:21:09, skipping insertion in model container [2022-11-23 15:21:09,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:21:08" (2/3) ... [2022-11-23 15:21:09,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dcb62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:21:09, skipping insertion in model container [2022-11-23 15:21:09,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:21:09" (3/3) ... [2022-11-23 15:21:09,113 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_multiply_34_bad.i [2022-11-23 15:21:09,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:21:09,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:21:09,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:21:09,210 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;@6124bd28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:21:09,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:21:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:21:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 15:21:09,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:09,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:09,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:21:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash 420466469, now seen corresponding path program 1 times [2022-11-23 15:21:09,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:21:09,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709845667] [2022-11-23 15:21:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:09,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:21:09,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:21:09,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:21:09,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:21:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:21:09,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:21:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:21:09,580 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 15:21:09,582 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:21:09,583 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:21:09,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:21:09,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:21:09,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:21:09,790 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:21:09,796 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:21:09,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:21:09 BoogieIcfgContainer [2022-11-23 15:21:09,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:21:09,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:21:09,842 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:21:09,842 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:21:09,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:21:09" (3/4) ... [2022-11-23 15:21:09,844 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 15:21:09,917 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:21:09,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:21:09,918 INFO L158 Benchmark]: Toolchain (without parser) took 2763.56ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 41.6MB in the beginning and 51.1MB in the end (delta: -9.6MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-11-23 15:21:09,919 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:21:09,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1368.92ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 41.4MB in the beginning and 35.5MB in the end (delta: 5.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-23 15:21:09,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.02ms. Allocated memory is still 90.2MB. Free memory was 35.5MB in the beginning and 61.1MB in the end (delta: -25.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-11-23 15:21:09,921 INFO L158 Benchmark]: Boogie Preprocessor took 71.56ms. Allocated memory is still 90.2MB. Free memory was 61.1MB in the beginning and 59.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:21:09,921 INFO L158 Benchmark]: RCFGBuilder took 408.98ms. Allocated memory is still 90.2MB. Free memory was 58.5MB in the beginning and 44.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:21:09,922 INFO L158 Benchmark]: TraceAbstraction took 740.38ms. Allocated memory is still 90.2MB. Free memory was 44.3MB in the beginning and 53.8MB in the end (delta: -9.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:21:09,922 INFO L158 Benchmark]: Witness Printer took 75.69ms. Allocated memory is still 90.2MB. Free memory was 53.8MB in the beginning and 51.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:21:09,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1368.92ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 41.4MB in the beginning and 35.5MB in the end (delta: 5.9MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.02ms. Allocated memory is still 90.2MB. Free memory was 35.5MB in the beginning and 61.1MB in the end (delta: -25.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.56ms. Allocated memory is still 90.2MB. Free memory was 61.1MB in the beginning and 59.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 408.98ms. Allocated memory is still 90.2MB. Free memory was 58.5MB in the beginning and 44.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 740.38ms. Allocated memory is still 90.2MB. Free memory was 44.3MB in the beginning and 53.8MB in the end (delta: -9.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.69ms. Allocated memory is still 90.2MB. Free memory was 53.8MB in the beginning and 51.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1564]: integer overflow possible integer overflow possible We found a FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL printLine("Calling bad()...") VAL [#in~line={2:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1572] RET printLine("Calling bad()...") VAL [#in~argv={13:12}, argc=12, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=12] [L1573] CALL CWE191_Integer_Underflow__int_rand_multiply_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_rand_multiply_34_unionType myUnion; [L1557] data = 0 [L1558] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1558] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}, rand()=0, rand()=0, rand()=0, rand()=1, rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1=-1073741825] [L1558] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1559] myUnion.unionFirst = data [L1561] EXPR myUnion.unionSecond [L1561] int data = myUnion.unionSecond; [L1562] COND TRUE data < 0 VAL [data=-1073741825, data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] [L1564] data * 2 VAL [data=-1073741825, data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] - UnprovableResult [Line: 1564]: 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 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 proved your program to be incorrect! [2022-11-23 15:21:09,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b17c36-9fde-4a7d-b3f3-265c8d1fcbcf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)