./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_22_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dfae07a1ceec6d1b65c4238ed3c2453f6db5ebb367a189128b5d9b17c38d8ea6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 23:02:34,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 23:02:34,801 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-12-02 23:02:34,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 23:02:34,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 23:02:34,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 23:02:34,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 23:02:34,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 23:02:34,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 23:02:34,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 23:02:34,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 23:02:34,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 23:02:34,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 23:02:34,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 23:02:34,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 23:02:34,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 23:02:34,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 23:02:34,836 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 23:02:34,836 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 23:02:34,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 23:02:34,837 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 23:02:34,838 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 23:02:34,838 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 23:02:34,839 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 23:02:34,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 23:02:34,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:02:34,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 23:02:34,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 23:02:34,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 23:02:34,842 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 23:02:34,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 23:02:34,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 23:02:34,843 INFO L153 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_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfae07a1ceec6d1b65c4238ed3c2453f6db5ebb367a189128b5d9b17c38d8ea6 [2023-12-02 23:02:35,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 23:02:35,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 23:02:35,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 23:02:35,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 23:02:35,080 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 23:02:35,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_22_bad.i [2023-12-02 23:02:37,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 23:02:38,077 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 23:02:38,078 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_22_bad.i [2023-12-02 23:02:38,102 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/data/6f97d861a/32c4dc877f6648fc9db6b18f40d2721a/FLAGb4aa5f220 [2023-12-02 23:02:38,343 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/data/6f97d861a/32c4dc877f6648fc9db6b18f40d2721a [2023-12-02 23:02:38,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 23:02:38,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 23:02:38,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 23:02:38,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 23:02:38,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 23:02:38,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:02:38" (1/1) ... [2023-12-02 23:02:38,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b0601e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:38, skipping insertion in model container [2023-12-02 23:02:38,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:02:38" (1/1) ... [2023-12-02 23:02:38,409 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 23:02:39,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:02:39,128 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 23:02:39,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:02:39,312 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:39,313 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:39,313 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:39,313 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:39,313 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:39,319 INFO L206 MainTranslator]: Completed translation [2023-12-02 23:02:39,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39 WrapperNode [2023-12-02 23:02:39,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 23:02:39,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 23:02:39,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 23:02:39,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 23:02:39,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,377 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2023-12-02 23:02:39,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 23:02:39,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 23:02:39,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 23:02:39,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 23:02:39,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,397 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 23:02:39,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 23:02:39,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 23:02:39,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 23:02:39,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:02:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 23:02:39,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 23:02:39,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 23:02:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-02 23:02:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 23:02:39,469 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 23:02:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 23:02:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 23:02:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 23:02:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 23:02:39,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 23:02:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 23:02:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 23:02:39,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 23:02:39,618 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 23:02:39,620 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 23:02:39,730 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 23:02:39,771 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 23:02:39,772 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 23:02:39,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:02:39 BoogieIcfgContainer [2023-12-02 23:02:39,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 23:02:39,775 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 23:02:39,775 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 23:02:39,783 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 23:02:39,783 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:02:39" (1/1) ... [2023-12-02 23:02:39,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 23:02:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:02:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2023-12-02 23:02:39,839 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-12-02 23:02:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 23:02:39,843 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:02:39,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:02:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:02:39,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:02:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:02:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:02:40,067 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:02:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:02:40,101 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-02 23:02:40,122 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-12-02 23:02:40,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 11:02:40 ImpRootNode [2023-12-02 23:02:40,128 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 23:02:40,129 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 23:02:40,129 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 23:02:40,129 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 23:02:40,130 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:02:39" (3/4) ... [2023-12-02 23:02:40,131 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 23:02:40,132 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 23:02:40,133 INFO L158 Benchmark]: Toolchain (without parser) took 1786.60ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 70.0MB in the end (delta: 61.3MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2023-12-02 23:02:40,134 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 132.1MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:02:40,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 972.92ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 108.6MB in the end (delta: 22.6MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2023-12-02 23:02:40,135 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.02ms. Allocated memory is still 174.1MB. Free memory was 108.6MB in the beginning and 105.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 23:02:40,135 INFO L158 Benchmark]: Boogie Preprocessor took 26.88ms. Allocated memory is still 174.1MB. Free memory was 105.6MB in the beginning and 103.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 23:02:40,136 INFO L158 Benchmark]: RCFGBuilder took 368.05ms. Allocated memory is still 174.1MB. Free memory was 103.5MB in the beginning and 88.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 23:02:40,137 INFO L158 Benchmark]: CodeCheck took 353.11ms. Allocated memory is still 174.1MB. Free memory was 88.8MB in the beginning and 70.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 23:02:40,137 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 174.1MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:02:40,140 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1582]: 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, overapproximation of large string literal at line 1571. 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_sub_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_sub_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 [CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=27, argc=27, argv={28:26}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_sub_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal) VAL [CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] data - 1 VAL [CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 132.1MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 972.92ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 108.6MB in the end (delta: 22.6MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.02ms. Allocated memory is still 174.1MB. Free memory was 108.6MB in the beginning and 105.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.88ms. Allocated memory is still 174.1MB. Free memory was 105.6MB in the beginning and 103.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 368.05ms. Allocated memory is still 174.1MB. Free memory was 103.5MB in the beginning and 88.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 353.11ms. Allocated memory is still 174.1MB. Free memory was 88.8MB in the beginning and 70.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 174.1MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet102 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 23:02:40,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dfae07a1ceec6d1b65c4238ed3c2453f6db5ebb367a189128b5d9b17c38d8ea6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 23:02:42,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 23:02:42,177 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-12-02 23:02:42,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 23:02:42,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 23:02:42,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 23:02:42,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 23:02:42,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 23:02:42,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 23:02:42,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 23:02:42,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 23:02:42,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 23:02:42,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 23:02:42,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 23:02:42,217 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 23:02:42,217 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 23:02:42,218 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 23:02:42,218 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 23:02:42,219 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 23:02:42,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 23:02:42,220 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 23:02:42,221 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 23:02:42,221 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 23:02:42,222 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 23:02:42,222 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 23:02:42,223 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-02 23:02:42,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 23:02:42,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:02:42,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 23:02:42,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 23:02:42,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 23:02:42,225 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 23:02:42,226 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 23:02:42,226 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 23:02:42,226 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-02 23:02:42,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 23:02:42,227 INFO L153 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_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfae07a1ceec6d1b65c4238ed3c2453f6db5ebb367a189128b5d9b17c38d8ea6 [2023-12-02 23:02:42,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 23:02:42,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 23:02:42,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 23:02:42,558 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 23:02:42,559 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 23:02:42,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_22_bad.i [2023-12-02 23:02:45,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 23:02:45,674 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 23:02:45,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_22_bad.i [2023-12-02 23:02:45,699 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/data/5d3baf075/2071056ef3cd4d8fb3db6b8b2a4aab1d/FLAGfcf3bcf9f [2023-12-02 23:02:45,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/data/5d3baf075/2071056ef3cd4d8fb3db6b8b2a4aab1d [2023-12-02 23:02:45,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 23:02:45,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 23:02:45,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 23:02:45,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 23:02:45,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 23:02:45,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:02:45" (1/1) ... [2023-12-02 23:02:45,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b661cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:45, skipping insertion in model container [2023-12-02 23:02:45,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:02:45" (1/1) ... [2023-12-02 23:02:45,810 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 23:02:46,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:02:46,559 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 23:02:46,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:02:46,800 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:46,800 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:46,800 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:46,800 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:46,800 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:02:46,806 INFO L206 MainTranslator]: Completed translation [2023-12-02 23:02:46,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46 WrapperNode [2023-12-02 23:02:46,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 23:02:46,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 23:02:46,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 23:02:46,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 23:02:46,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,867 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-12-02 23:02:46,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 23:02:46,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 23:02:46,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 23:02:46,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 23:02:46,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 23:02:46,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 23:02:46,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 23:02:46,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 23:02:46,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:46" (1/1) ... [2023-12-02 23:02:46,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:02:46,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 23:02:46,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 23:02:46,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 23:02:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-02 23:02:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 23:02:46,972 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 23:02:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 23:02:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 23:02:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 23:02:46,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 23:02:46,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 23:02:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 23:02:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 23:02:46,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-12-02 23:02:47,122 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 23:02:47,124 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 23:02:47,253 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 23:02:47,297 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 23:02:47,297 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 23:02:47,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:02:47 BoogieIcfgContainer [2023-12-02 23:02:47,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 23:02:47,300 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 23:02:47,300 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 23:02:47,309 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 23:02:47,310 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:02:47" (1/1) ... [2023-12-02 23:02:47,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 23:02:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:02:47,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2023-12-02 23:02:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-12-02 23:02:47,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 23:02:47,374 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:02:47,375 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 23:02:47,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 23:02:47,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 23:02:47,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-02 23:02:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:02:47,578 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:02:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:02:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:02:47,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:02:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:02:47,829 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-12-02 23:02:47,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-02 23:02:47,834 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-02 23:02:47,854 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-12-02 23:02:47,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 11:02:47 ImpRootNode [2023-12-02 23:02:47,859 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 23:02:47,859 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 23:02:47,860 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 23:02:47,860 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 23:02:47,860 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:02:47" (3/4) ... [2023-12-02 23:02:47,862 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 23:02:47,863 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 23:02:47,864 INFO L158 Benchmark]: Toolchain (without parser) took 2146.80ms. Allocated memory was 67.1MB in the beginning and 111.1MB in the end (delta: 44.0MB). Free memory was 30.0MB in the beginning and 76.9MB in the end (delta: -46.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:02:47,864 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:02:47,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1063.59ms. Allocated memory is still 111.1MB. Free memory was 90.3MB in the beginning and 83.5MB in the end (delta: 6.8MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2023-12-02 23:02:47,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.64ms. Allocated memory is still 111.1MB. Free memory was 83.5MB in the beginning and 80.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 23:02:47,866 INFO L158 Benchmark]: Boogie Preprocessor took 36.93ms. Allocated memory is still 111.1MB. Free memory was 80.6MB in the beginning and 78.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 23:02:47,867 INFO L158 Benchmark]: RCFGBuilder took 392.70ms. Allocated memory is still 111.1MB. Free memory was 78.5MB in the beginning and 60.5MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 23:02:47,867 INFO L158 Benchmark]: CodeCheck took 559.41ms. Allocated memory is still 111.1MB. Free memory was 60.5MB in the beginning and 76.9MB in the end (delta: -16.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:02:47,868 INFO L158 Benchmark]: Witness Printer took 3.78ms. Allocated memory is still 111.1MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:02:47,871 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1582]: 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, overapproximation of large string literal at line 1571. 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_sub_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_sub_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 [CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_sub_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal) VAL [CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] data - 1 VAL [CWE191_Integer_Underflow__int_fgets_sub_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1063.59ms. Allocated memory is still 111.1MB. Free memory was 90.3MB in the beginning and 83.5MB in the end (delta: 6.8MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.64ms. Allocated memory is still 111.1MB. Free memory was 83.5MB in the beginning and 80.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.93ms. Allocated memory is still 111.1MB. Free memory was 80.6MB in the beginning and 78.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.70ms. Allocated memory is still 111.1MB. Free memory was 78.5MB in the beginning and 60.5MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 559.41ms. Allocated memory is still 111.1MB. Free memory was 60.5MB in the beginning and 76.9MB in the end (delta: -16.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.78ms. Allocated memory is still 111.1MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet100 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 23:02:47,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99efec4-0419-4d14-b84d-a75b46f176f8/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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