./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_21_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh --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 031d986ca26b194bf475ce418777d825d50a75f1c640fd3ecd1f01616e3db7d5 --- 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-2329fc7 [2022-12-14 06:47:40,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:47:40,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:47:40,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:47:40,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:47:40,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:47:40,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:47:40,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:47:40,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:47:40,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:47:40,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:47:40,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:47:40,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:47:40,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:47:40,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:47:40,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:47:40,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:47:40,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:47:40,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:47:40,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:47:40,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:47:40,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:47:40,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:47:40,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:47:40,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:47:40,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:47:40,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:47:40,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:47:40,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:47:40,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:47:40,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:47:40,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:47:40,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:47:40,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:47:40,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:47:40,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:47:40,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:47:40,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:47:40,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:47:40,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:47:40,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:47:40,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 06:47:40,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:47:40,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:47:40,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:47:40,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:47:40,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:47:40,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:47:40,507 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:47:40,508 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:47:40,508 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:47:40,508 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:47:40,508 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:47:40,508 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:47:40,508 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:47:40,509 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:47:40,509 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:47:40,509 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:47:40,509 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:47:40,509 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:47:40,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:47:40,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:47:40,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:47:40,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:47:40,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:47:40,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:47:40,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:47:40,511 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 06:47:40,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:47:40,511 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:47:40,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:47:40,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:47:40,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:47:40,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:47:40,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:47:40,512 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:47:40,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:47:40,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:47:40,513 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:47:40,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:47:40,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:47:40,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:47:40,513 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_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 031d986ca26b194bf475ce418777d825d50a75f1c640fd3ecd1f01616e3db7d5 [2022-12-14 06:47:40,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:47:40,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:47:40,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:47:40,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:47:40,705 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:47:40,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_21_bad.i [2022-12-14 06:47:43,295 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:47:43,489 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:47:43,490 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_21_bad.i [2022-12-14 06:47:43,502 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/data/aa5eb3ef1/5d66754386ea45aeaf54086da313504a/FLAG26b13c77d [2022-12-14 06:47:43,512 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/data/aa5eb3ef1/5d66754386ea45aeaf54086da313504a [2022-12-14 06:47:43,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:47:43,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:47:43,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:47:43,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:47:43,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:47:43,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:47:43" (1/1) ... [2022-12-14 06:47:43,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bddf14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:43, skipping insertion in model container [2022-12-14 06:47:43,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:47:43" (1/1) ... [2022-12-14 06:47:43,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:47:43,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:47:43,788 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:47:44,095 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:47:44,099 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:47:44,101 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:47:44,103 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:47:44,103 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:47:44,121 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:47:44,123 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:47:44,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:47:44,131 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:47:44,145 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:47:44,177 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:47:44,178 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:47:44,179 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:47:44,180 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:47:44,181 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:47:44,184 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:47:44,186 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:47:44,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:47:44,279 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:47:44,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44 WrapperNode [2022-12-14 06:47:44,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:47:44,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:47:44,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:47:44,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:47:44,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,319 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2022-12-14 06:47:44,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:47:44,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:47:44,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:47:44,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:47:44,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,334 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:47:44,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:47:44,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:47:44,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:47:44,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (1/1) ... [2022-12-14 06:47:44,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:47:44,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:47:44,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:47:44,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:47:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 06:47:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 06:47:44,389 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 06:47:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:47:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 06:47:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:47:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:47:44,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:47:44,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:47:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 06:47:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:47:44,487 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:47:44,489 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:47:44,590 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:47:44,618 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:47:44,618 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:47:44,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:47:44 BoogieIcfgContainer [2022-12-14 06:47:44,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:47:44,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:47:44,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:47:44,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:47:44,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:47:43" (1/3) ... [2022-12-14 06:47:44,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fdf8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:47:44, skipping insertion in model container [2022-12-14 06:47:44,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:44" (2/3) ... [2022-12-14 06:47:44,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fdf8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:47:44, skipping insertion in model container [2022-12-14 06:47:44,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:47:44" (3/3) ... [2022-12-14 06:47:44,629 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_21_bad.i [2022-12-14 06:47:44,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:47:44,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 06:47:44,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:47:44,696 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;@3d5109fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:47:44,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 06:47:44,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 06:47:44,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 06:47:44,704 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:47:44,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:47:44,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 06:47:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:47:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1764856781, now seen corresponding path program 1 times [2022-12-14 06:47:44,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:47:44,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757369829] [2022-12-14 06:47:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:47:44,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:47:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:47:44,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:47:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:47:44,866 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 06:47:44,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:47:44,868 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 06:47:44,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 06:47:44,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:47:44,873 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 06:47:44,876 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:47:44,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:47:44 BoogieIcfgContainer [2022-12-14 06:47:44,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:47:44,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:47:44,895 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:47:44,895 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:47:44,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:47:44" (3/4) ... [2022-12-14 06:47:44,898 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 06:47:44,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:47:44,899 INFO L158 Benchmark]: Toolchain (without parser) took 1383.88ms. Allocated memory is still 148.9MB. Free memory was 104.2MB in the beginning and 67.6MB in the end (delta: 36.5MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2022-12-14 06:47:44,900 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:47:44,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 763.60ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 104.9MB in the end (delta: -973.3kB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2022-12-14 06:47:44,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.87ms. Allocated memory is still 148.9MB. Free memory was 104.9MB in the beginning and 102.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:47:44,901 INFO L158 Benchmark]: Boogie Preprocessor took 17.57ms. Allocated memory is still 148.9MB. Free memory was 102.0MB in the beginning and 100.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:47:44,902 INFO L158 Benchmark]: RCFGBuilder took 283.10ms. Allocated memory is still 148.9MB. Free memory was 100.0MB in the beginning and 85.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 06:47:44,902 INFO L158 Benchmark]: TraceAbstraction took 271.25ms. Allocated memory is still 148.9MB. Free memory was 85.2MB in the beginning and 68.6MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 06:47:44,903 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 148.9MB. Free memory was 68.6MB in the beginning and 67.6MB in the end (delta: 946.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:47:44,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 763.60ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 104.9MB in the end (delta: -973.3kB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.87ms. Allocated memory is still 148.9MB. Free memory was 104.9MB in the beginning and 102.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.57ms. Allocated memory is still 148.9MB. Free memory was 102.0MB in the beginning and 100.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.10ms. Allocated memory is still 148.9MB. Free memory was 100.0MB in the beginning and 85.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 271.25ms. Allocated memory is still 148.9MB. Free memory was 85.2MB in the beginning and 68.6MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 148.9MB. Free memory was 68.6MB in the beginning and 67.6MB in the end (delta: 946.7kB). 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: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int badStatic = 0; [L1581] CALL printLine("Calling bad()...") VAL [badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=1073741825, argc=1073741825, argv={1073741827:1073741826}, argv={1073741827:1073741826}, badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_multiply_21_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1575] badStatic = 1 [L1576] CALL badSink(data) [L1551] COND TRUE \read(badStatic) VAL [\old(data)=-1073741825, badStatic=1, 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] [L1553] COND TRUE data < 0 VAL [\old(data)=-1073741825, badStatic=1, 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] [L1555] data * 2 VAL [\old(data)=-1073741825, badStatic=1, 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] - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=18occurred 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, 10 NumberOfCodeBlocks, 10 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 [2022-12-14 06:47:44,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/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_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh --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 031d986ca26b194bf475ce418777d825d50a75f1c640fd3ecd1f01616e3db7d5 --- 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-2329fc7 [2022-12-14 06:47:46,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:47:46,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:47:46,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:47:46,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:47:46,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:47:46,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:47:46,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:47:46,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:47:46,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:47:46,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:47:46,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:47:46,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:47:46,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:47:46,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:47:46,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:47:46,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:47:46,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:47:46,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:47:46,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:47:46,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:47:46,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:47:46,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:47:46,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:47:46,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:47:46,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:47:46,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:47:46,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:47:46,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:47:46,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:47:46,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:47:46,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:47:46,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:47:46,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:47:46,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:47:46,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:47:46,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:47:46,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:47:46,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:47:46,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:47:46,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:47:46,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 06:47:46,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:47:46,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:47:46,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:47:46,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:47:46,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:47:46,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:47:46,673 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:47:46,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:47:46,673 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:47:46,673 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:47:46,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:47:46,673 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:47:46,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:47:46,674 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:47:46,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:47:46,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:47:46,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:47:46,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:47:46,675 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:47:46,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 06:47:46,675 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 06:47:46,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 06:47:46,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:47:46,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:47:46,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:47:46,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:47:46,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 06:47:46,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:47:46,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:47:46,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:47:46,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:47:46,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:47:46,677 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 06:47:46,677 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 06:47:46,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:47:46,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:47:46,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 06:47:46,677 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_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 031d986ca26b194bf475ce418777d825d50a75f1c640fd3ecd1f01616e3db7d5 [2022-12-14 06:47:46,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:47:46,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:47:46,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:47:46,945 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:47:46,945 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:47:46,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_21_bad.i [2022-12-14 06:47:49,554 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:47:49,818 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:47:49,819 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_21_bad.i [2022-12-14 06:47:49,838 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/data/f5ed8734a/4d467b5401214acc9f1d2a3305049ae0/FLAGa9b098ae9 [2022-12-14 06:47:49,854 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/data/f5ed8734a/4d467b5401214acc9f1d2a3305049ae0 [2022-12-14 06:47:49,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:47:49,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:47:49,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:47:49,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:47:49,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:47:49,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:47:49" (1/1) ... [2022-12-14 06:47:49,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8e3eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:49, skipping insertion in model container [2022-12-14 06:47:49,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:47:49" (1/1) ... [2022-12-14 06:47:49,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:47:49,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:47:50,208 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:47:50,564 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:47:50,568 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:47:50,570 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:47:50,572 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:47:50,572 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:47:50,591 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:47:50,594 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:47:50,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:47:50,606 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:47:50,624 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 06:47:50,673 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 06:47:50,675 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:47:50,676 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 06:47:50,678 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:47:50,679 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 06:47:50,684 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 06:47:50,686 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 06:47:50,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:47:50,776 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:47:50,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50 WrapperNode [2022-12-14 06:47:50,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:47:50,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:47:50,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:47:50,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:47:50,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,827 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-12-14 06:47:50,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:47:50,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:47:50,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:47:50,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:47:50,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:47:50,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:47:50,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:47:50,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:47:50,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (1/1) ... [2022-12-14 06:47:50,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:47:50,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:47:50,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:47:50,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:47:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 06:47:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 06:47:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 06:47:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:47:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 06:47:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:47:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:47:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:47:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:47:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 06:47:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 06:47:51,029 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:47:51,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:47:51,154 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:47:51,160 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:47:51,160 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:47:51,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:47:51 BoogieIcfgContainer [2022-12-14 06:47:51,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:47:51,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:47:51,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:47:51,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:47:51,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:47:49" (1/3) ... [2022-12-14 06:47:51,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c18a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:47:51, skipping insertion in model container [2022-12-14 06:47:51,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:47:50" (2/3) ... [2022-12-14 06:47:51,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c18a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:47:51, skipping insertion in model container [2022-12-14 06:47:51,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:47:51" (3/3) ... [2022-12-14 06:47:51,170 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_21_bad.i [2022-12-14 06:47:51,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:47:51,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 06:47:51,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:47:51,242 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;@1a9d12e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:47:51,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 06:47:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 21 states have internal predecessors, (24), 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) [2022-12-14 06:47:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 06:47:51,254 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:47:51,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:47:51,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 06:47:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:47:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1923423969, now seen corresponding path program 1 times [2022-12-14 06:47:51,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:47:51,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048281044] [2022-12-14 06:47:51,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:47:51,274 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 [2022-12-14 06:47:51,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:47:51,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/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) [2022-12-14 06:47:51,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/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 [2022-12-14 06:47:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:47:51,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 06:47:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 06:47:51,450 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 06:47:51,452 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 06:47:51,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 06:47:51,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 06:47:51,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/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 [2022-12-14 06:47:51,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/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 [2022-12-14 06:47:51,659 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 06:47:51,663 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:47:51,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:47:51 BoogieIcfgContainer [2022-12-14 06:47:51,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:47:51,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:47:51,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:47:51,686 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:47:51,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:47:51" (3/4) ... [2022-12-14 06:47:51,690 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 06:47:51,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:47:51,691 INFO L158 Benchmark]: Toolchain (without parser) took 1833.61ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 46.2MB in the end (delta: 20.9MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2022-12-14 06:47:51,692 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory was 45.8MB in the beginning and 45.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:47:51,692 INFO L158 Benchmark]: CACSL2BoogieTranslator took 918.11ms. Allocated memory is still 100.7MB. Free memory was 66.9MB in the beginning and 54.7MB in the end (delta: 12.2MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-12-14 06:47:51,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.37ms. Allocated memory is still 100.7MB. Free memory was 54.7MB in the beginning and 51.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 06:47:51,693 INFO L158 Benchmark]: Boogie Preprocessor took 28.89ms. Allocated memory is still 100.7MB. Free memory was 51.9MB in the beginning and 49.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:47:51,694 INFO L158 Benchmark]: RCFGBuilder took 304.48ms. Allocated memory is still 100.7MB. Free memory was 49.3MB in the beginning and 64.4MB in the end (delta: -15.1MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-12-14 06:47:51,694 INFO L158 Benchmark]: TraceAbstraction took 521.14ms. Allocated memory is still 100.7MB. Free memory was 63.9MB in the beginning and 46.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 06:47:51,695 INFO L158 Benchmark]: Witness Printer took 4.37ms. Allocated memory is still 100.7MB. Free memory was 46.6MB in the beginning and 46.2MB in the end (delta: 414.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:47:51,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory was 45.8MB in the beginning and 45.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 918.11ms. Allocated memory is still 100.7MB. Free memory was 66.9MB in the beginning and 54.7MB in the end (delta: 12.2MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.37ms. Allocated memory is still 100.7MB. Free memory was 54.7MB in the beginning and 51.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.89ms. Allocated memory is still 100.7MB. Free memory was 51.9MB in the beginning and 49.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.48ms. Allocated memory is still 100.7MB. Free memory was 49.3MB in the beginning and 64.4MB in the end (delta: -15.1MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 521.14ms. Allocated memory is still 100.7MB. Free memory was 63.9MB in the beginning and 46.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.37ms. Allocated memory is still 100.7MB. Free memory was 46.6MB in the beginning and 46.2MB in the end (delta: 414.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int badStatic = 0; VAL [badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL printLine("Calling bad()...") VAL [badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_multiply_21_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1575] badStatic = 1 [L1576] CALL badSink(data) [L1551] COND TRUE \read(badStatic) VAL [\old(data)=-2147483648, badStatic=1, 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] [L1553] COND TRUE data < 0 VAL [\old(data)=-2147483648, badStatic=1, 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] [L1555] data * 2 VAL [\old(data)=-2147483648, badStatic=1, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 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=25occurred 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, 13 NumberOfCodeBlocks, 13 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 [2022-12-14 06:47:51,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac83c971-2cba-41e4-aa7b-32d9c1636412/bin/utaipan-gh47qXpMRh/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