./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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 376ee0639763b07c2274d2fee61fe1466a9b43bfbf7a1e08def008915e70d884 --- 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 11:34:51,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:34:51,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:34:51,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:34:51,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:34:51,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:34:51,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:34:51,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:34:51,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:34:51,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:34:51,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:34:51,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:34:51,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:34:51,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:34:51,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:34:51,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:34:51,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:34:51,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:34:51,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:34:51,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:34:51,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:34:51,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:34:51,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:34:51,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:34:51,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:34:51,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:34:51,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:34:51,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:34:51,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:34:51,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:34:51,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:34:51,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:34:51,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:34:51,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:34:51,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:34:51,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:34:51,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:34:51,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:34:51,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:34:51,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:34:51,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:34:51,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 11:34:51,332 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:34:51,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:34:51,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:34:51,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:34:51,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:34:51,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:34:51,334 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:34:51,334 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:34:51,334 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:34:51,335 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:34:51,335 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:34:51,335 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:34:51,335 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:34:51,335 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:34:51,335 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:34:51,336 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:34:51,336 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:34:51,336 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:34:51,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:34:51,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:34:51,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:34:51,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:34:51,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:34:51,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:34:51,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:34:51,338 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:34:51,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:34:51,338 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:34:51,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:34:51,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:34:51,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:34:51,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:34:51,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:34:51,340 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:34:51,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:34:51,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:34:51,340 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:34:51,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:34:51,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:34:51,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:34:51,341 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_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376ee0639763b07c2274d2fee61fe1466a9b43bfbf7a1e08def008915e70d884 [2022-12-14 11:34:51,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:34:51,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:34:51,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:34:51,544 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:34:51,545 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:34:51,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2022-12-14 11:34:54,059 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:34:54,300 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:34:54,300 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2022-12-14 11:34:54,314 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/data/3301245d7/24189fd815334d82a3a84afa6798b625/FLAG20c8f4f76 [2022-12-14 11:34:54,620 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/data/3301245d7/24189fd815334d82a3a84afa6798b625 [2022-12-14 11:34:54,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:34:54,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:34:54,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:34:54,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:34:54,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:34:54,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:34:54" (1/1) ... [2022-12-14 11:34:54,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3692ada2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:54, skipping insertion in model container [2022-12-14 11:34:54,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:34:54" (1/1) ... [2022-12-14 11:34:54,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:34:54,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:34:54,902 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:34:55,199 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:34:55,203 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:34:55,204 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:34:55,206 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:34:55,207 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:34:55,223 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:34:55,226 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:34:55,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:34:55,236 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:34:55,249 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:34:55,278 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:34:55,279 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:34:55,279 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:34:55,281 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:34:55,281 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:34:55,285 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:34:55,286 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:34:55,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:34:55,405 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:34:55,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55 WrapperNode [2022-12-14 11:34:55,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:34:55,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:34:55,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:34:55,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:34:55,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,453 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2022-12-14 11:34:55,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:34:55,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:34:55,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:34:55,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:34:55,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:34:55,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:34:55,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:34:55,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:34:55,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (1/1) ... [2022-12-14 11:34:55,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:34:55,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:34:55,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:34:55,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:34:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 11:34:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 11:34:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 11:34:55,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 11:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:34:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 11:34:55,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:34:55,642 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:34:55,644 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:34:55,735 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:34:55,758 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:34:55,759 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:34:55,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:34:55 BoogieIcfgContainer [2022-12-14 11:34:55,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:34:55,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:34:55,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:34:55,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:34:55,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:34:54" (1/3) ... [2022-12-14 11:34:55,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a79bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:34:55, skipping insertion in model container [2022-12-14 11:34:55,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:34:55" (2/3) ... [2022-12-14 11:34:55,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a79bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:34:55, skipping insertion in model container [2022-12-14 11:34:55,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:34:55" (3/3) ... [2022-12-14 11:34:55,770 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2022-12-14 11:34:55,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:34:55,788 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 11:34:55,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:34:55,829 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;@824b7ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:34:55,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 11:34:55,833 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 11:34:55,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 11:34:55,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:34:55,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:34:55,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:34:55,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:34:55,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1764856781, now seen corresponding path program 1 times [2022-12-14 11:34:55,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:34:55,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850264] [2022-12-14 11:34:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:34:55,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:34:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:34:55,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:34:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:34:56,017 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:34:56,018 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:34:56,019 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 11:34:56,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 11:34:56,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:34:56,025 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 11:34:56,030 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:34:56,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:34:56 BoogieIcfgContainer [2022-12-14 11:34:56,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:34:56,050 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:34:56,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:34:56,050 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:34:56,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:34:55" (3/4) ... [2022-12-14 11:34:56,053 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:34:56,053 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:34:56,054 INFO L158 Benchmark]: Toolchain (without parser) took 1429.79ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 84.5MB in the beginning and 119.2MB in the end (delta: -34.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-12-14 11:34:56,054 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:34:56,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 780.72ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 84.2MB in the beginning and 102.1MB in the end (delta: -17.9MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2022-12-14 11:34:56,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.14ms. Allocated memory is still 161.5MB. Free memory was 102.1MB in the beginning and 98.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 11:34:56,056 INFO L158 Benchmark]: Boogie Preprocessor took 18.98ms. Allocated memory is still 161.5MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:34:56,056 INFO L158 Benchmark]: RCFGBuilder took 288.40ms. Allocated memory is still 161.5MB. Free memory was 97.5MB in the beginning and 83.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 11:34:56,057 INFO L158 Benchmark]: TraceAbstraction took 285.94ms. Allocated memory is still 161.5MB. Free memory was 81.8MB in the beginning and 119.2MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:34:56,057 INFO L158 Benchmark]: Witness Printer took 2.83ms. Allocated memory is still 161.5MB. Free memory was 119.2MB in the beginning and 119.2MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:34:56,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 119.5MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 780.72ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 84.2MB in the beginning and 102.1MB in the end (delta: -17.9MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.14ms. Allocated memory is still 161.5MB. Free memory was 102.1MB in the beginning and 98.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.98ms. Allocated memory is still 161.5MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 288.40ms. Allocated memory is still 161.5MB. Free memory was 97.5MB in the beginning and 83.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 285.94ms. Allocated memory is still 161.5MB. Free memory was 81.8MB in the beginning and 119.2MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.83ms. Allocated memory is still 161.5MB. Free memory was 119.2MB in the beginning and 119.2MB in the end (delta: 2.7kB). 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi 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); [L1548] int CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=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) [L1571] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741830:1073741829}, argv={1073741830:1073741829}, CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=0, 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 CWE191_Integer_Underflow__int_fgets_multiply_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1565] CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_multiply_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal) VAL [\old(data)=-1073741825, CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=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] [L1581] COND TRUE data < 0 VAL [\old(data)=-1073741825, CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=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] [L1583] data * 2 VAL [\old(data)=-1073741825, CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=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: 1583]: 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 11:34:56,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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 376ee0639763b07c2274d2fee61fe1466a9b43bfbf7a1e08def008915e70d884 --- 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 11:34:57,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:34:57,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:34:57,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:34:57,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:34:57,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:34:57,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:34:57,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:34:57,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:34:57,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:34:57,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:34:57,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:34:57,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:34:57,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:34:57,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:34:57,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:34:57,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:34:57,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:34:57,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:34:57,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:34:57,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:34:57,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:34:57,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:34:57,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:34:57,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:34:57,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:34:57,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:34:57,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:34:57,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:34:57,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:34:57,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:34:57,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:34:57,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:34:57,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:34:57,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:34:57,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:34:57,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:34:57,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:34:57,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:34:57,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:34:57,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:34:57,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 11:34:57,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:34:57,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:34:57,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:34:57,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:34:57,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:34:57,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:34:57,796 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:34:57,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:34:57,797 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:34:57,797 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:34:57,797 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:34:57,797 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:34:57,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:34:57,798 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:34:57,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:34:57,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:34:57,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:34:57,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:34:57,798 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:34:57,798 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 11:34:57,798 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:34:57,799 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 11:34:57,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:34:57,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:34:57,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:34:57,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:34:57,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 11:34:57,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:34:57,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:34:57,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:34:57,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:34:57,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:34:57,809 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 11:34:57,809 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 11:34:57,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:34:57,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:34:57,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 11:34:57,810 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_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376ee0639763b07c2274d2fee61fe1466a9b43bfbf7a1e08def008915e70d884 [2022-12-14 11:34:58,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:34:58,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:34:58,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:34:58,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:34:58,033 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:34:58,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2022-12-14 11:35:00,713 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:35:00,940 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:35:00,941 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2022-12-14 11:35:00,955 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/data/85ebf314e/7e558d0277e3460da3b0314732a5fc68/FLAGc4811baa1 [2022-12-14 11:35:00,965 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/data/85ebf314e/7e558d0277e3460da3b0314732a5fc68 [2022-12-14 11:35:00,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:35:00,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:35:00,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:35:00,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:35:00,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:35:00,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:35:00" (1/1) ... [2022-12-14 11:35:00,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3a6da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:00, skipping insertion in model container [2022-12-14 11:35:00,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:35:00" (1/1) ... [2022-12-14 11:35:00,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:35:01,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:35:01,314 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:35:01,628 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:35:01,632 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:35:01,633 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:35:01,634 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:35:01,635 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:35:01,651 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:35:01,654 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:35:01,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:35:01,667 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:35:01,688 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:35:01,720 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:35:01,721 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:35:01,722 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:35:01,723 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:35:01,724 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:35:01,727 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:35:01,728 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:35:01,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:35:01,801 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:35:01,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01 WrapperNode [2022-12-14 11:35:01,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:35:01,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:35:01,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:35:01,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:35:01,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,840 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-12-14 11:35:01,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:35:01,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:35:01,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:35:01,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:35:01,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,859 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:35:01,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:35:01,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:35:01,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:35:01,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (1/1) ... [2022-12-14 11:35:01,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:35:01,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:35:01,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:35:01,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:35:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 11:35:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 11:35:01,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 11:35:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:35:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 11:35:01,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:35:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:35:01,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:35:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:35:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 11:35:01,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 11:35:02,054 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:35:02,056 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:35:02,184 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:35:02,190 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:35:02,190 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:35:02,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:35:02 BoogieIcfgContainer [2022-12-14 11:35:02,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:35:02,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:35:02,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:35:02,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:35:02,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:35:00" (1/3) ... [2022-12-14 11:35:02,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23db5260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:35:02, skipping insertion in model container [2022-12-14 11:35:02,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:35:01" (2/3) ... [2022-12-14 11:35:02,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23db5260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:35:02, skipping insertion in model container [2022-12-14 11:35:02,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:35:02" (3/3) ... [2022-12-14 11:35:02,202 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2022-12-14 11:35:02,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:35:02,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 11:35:02,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:35:02,273 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;@23cbadda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:35:02,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 11:35:02,276 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 11:35:02,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:35:02,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:35:02,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:35:02,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:35:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:35:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1923423969, now seen corresponding path program 1 times [2022-12-14 11:35:02,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:35:02,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079770984] [2022-12-14 11:35:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:35:02,300 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 11:35:02,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:35:02,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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 11:35:02,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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 11:35:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:35:02,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:35:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:35:02,495 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 11:35:02,496 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:35:02,497 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 11:35:02,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 11:35:02,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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 11:35:02,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/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 11:35:02,704 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 11:35:02,709 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:35:02,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:35:02 BoogieIcfgContainer [2022-12-14 11:35:02,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:35:02,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:35:02,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:35:02,732 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:35:02,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:35:02" (3/4) ... [2022-12-14 11:35:02,735 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:35:02,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:35:02,735 INFO L158 Benchmark]: Toolchain (without parser) took 1766.98ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 61.5MB in the beginning and 44.7MB in the end (delta: 16.8MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2022-12-14 11:35:02,736 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:35:02,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 832.83ms. Allocated memory is still 83.9MB. Free memory was 61.5MB in the beginning and 42.2MB in the end (delta: 19.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 11:35:02,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.31ms. Allocated memory is still 83.9MB. Free memory was 42.2MB in the beginning and 39.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 11:35:02,737 INFO L158 Benchmark]: Boogie Preprocessor took 20.70ms. Allocated memory is still 83.9MB. Free memory was 39.3MB in the beginning and 37.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:35:02,737 INFO L158 Benchmark]: RCFGBuilder took 330.21ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 37.2MB in the beginning and 63.2MB in the end (delta: -26.0MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-12-14 11:35:02,738 INFO L158 Benchmark]: TraceAbstraction took 536.14ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 44.7MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 11:35:02,738 INFO L158 Benchmark]: Witness Printer took 2.90ms. Allocated memory is still 100.7MB. Free memory is still 44.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:35:02,740 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 56.6MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 832.83ms. Allocated memory is still 83.9MB. Free memory was 61.5MB in the beginning and 42.2MB in the end (delta: 19.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.31ms. Allocated memory is still 83.9MB. Free memory was 42.2MB in the beginning and 39.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.70ms. Allocated memory is still 83.9MB. Free memory was 39.3MB in the beginning and 37.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 330.21ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 37.2MB in the beginning and 63.2MB in the end (delta: -26.0MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * TraceAbstraction took 536.14ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 44.7MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.90ms. Allocated memory is still 100.7MB. Free memory is still 44.7MB. 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi 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); [L1548] int CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal = 0; VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=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) [L1571] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=0, 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 CWE191_Integer_Underflow__int_fgets_multiply_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1565] CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_multiply_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal) VAL [\old(data)=-2147483648, CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=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] [L1581] COND TRUE data < 0 VAL [\old(data)=-2147483648, CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=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] [L1583] data * 2 VAL [\old(data)=-2147483648, CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=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: 1583]: 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: 0.5s, 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 11:35:02,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3456079d-609d-4d9c-bf7e-c9d55489a7c6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample