./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_04_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_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/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_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/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_bc638478-df23-49f8-a890-2ea5f7756ade/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 81428a5976272df28d81c77eeefb812a03cab2a0ce49799baa4104daee6926e4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 02:44:08,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 02:44:08,934 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-12-03 02:44:08,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 02:44:08,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 02:44:08,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 02:44:08,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 02:44:08,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 02:44:08,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 02:44:08,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 02:44:08,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 02:44:08,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 02:44:08,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 02:44:08,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 02:44:08,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 02:44:08,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 02:44:08,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 02:44:08,969 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-03 02:44:08,969 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 02:44:08,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 02:44:08,970 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 02:44:08,971 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 02:44:08,971 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 02:44:08,972 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 02:44:08,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 02:44:08,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:44:08,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 02:44:08,973 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 02:44:08,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 02:44:08,974 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 02:44:08,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 02:44:08,975 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 02:44:08,975 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_bc638478-df23-49f8-a890-2ea5f7756ade/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81428a5976272df28d81c77eeefb812a03cab2a0ce49799baa4104daee6926e4 [2023-12-03 02:44:09,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 02:44:09,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 02:44:09,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 02:44:09,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 02:44:09,230 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 02:44:09,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_04_bad.i [2023-12-03 02:44:11,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 02:44:12,288 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 02:44:12,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_04_bad.i [2023-12-03 02:44:12,310 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/data/b927b5f09/ab1e51dbd91e45e886e3ea6048199221/FLAGb85f66460 [2023-12-03 02:44:12,322 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/data/b927b5f09/ab1e51dbd91e45e886e3ea6048199221 [2023-12-03 02:44:12,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 02:44:12,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 02:44:12,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 02:44:12,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 02:44:12,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 02:44:12,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:44:12" (1/1) ... [2023-12-03 02:44:12,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf3618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:12, skipping insertion in model container [2023-12-03 02:44:12,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:44:12" (1/1) ... [2023-12-03 02:44:12,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 02:44:13,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:44:13,107 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 02:44:13,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:44:13,331 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 02:44:13,331 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 02:44:13,332 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 02:44:13,332 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 02:44:13,338 INFO L206 MainTranslator]: Completed translation [2023-12-03 02:44:13,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13 WrapperNode [2023-12-03 02:44:13,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 02:44:13,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 02:44:13,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 02:44:13,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 02:44:13,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,398 INFO L138 Inliner]: procedures = 498, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-12-03 02:44:13,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 02:44:13,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 02:44:13,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 02:44:13,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 02:44:13,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,426 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 02:44:13,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 02:44:13,430 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 02:44:13,430 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 02:44:13,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:13" (1/1) ... [2023-12-03 02:44:13,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:44:13,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 02:44:13,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 02:44:13,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 02:44:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-03 02:44:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-03 02:44:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 02:44:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 02:44:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 02:44:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-03 02:44:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 02:44:13,642 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 02:44:13,644 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 02:44:13,826 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 02:44:14,006 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 02:44:14,006 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-03 02:44:14,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:44:14 BoogieIcfgContainer [2023-12-03 02:44:14,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 02:44:14,008 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 02:44:14,008 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 02:44:14,016 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 02:44:14,016 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:44:14" (1/1) ... [2023-12-03 02:44:14,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 02:44:14,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:44:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 14 states and 15 transitions. [2023-12-03 02:44:14,068 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-03 02:44:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 02:44:14,072 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:44:14,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:44:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:44:14,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 02:44:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:44:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:44:14,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 02:44:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:44:14,525 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-03 02:44:14,547 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet112 [2023-12-03 02:44:14,550 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite109 could not be translated [2023-12-03 02:44:14,550 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite109 could not be translated [2023-12-03 02:44:14,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 02:44:14 ImpRootNode [2023-12-03 02:44:14,554 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 02:44:14,554 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 02:44:14,554 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 02:44:14,554 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 02:44:14,555 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:44:14" (3/4) ... [2023-12-03 02:44:14,556 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-03 02:44:14,557 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 02:44:14,558 INFO L158 Benchmark]: Toolchain (without parser) took 2232.84ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 124.1MB in the beginning and 163.4MB in the end (delta: -39.3MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2023-12-03 02:44:14,559 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 172.0MB. Free memory was 114.2MB in the beginning and 114.0MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:44:14,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1012.37ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 123.5MB in the beginning and 171.7MB in the end (delta: -48.1MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. [2023-12-03 02:44:14,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.53ms. Allocated memory is still 224.4MB. Free memory was 171.7MB in the beginning and 168.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 02:44:14,561 INFO L158 Benchmark]: Boogie Preprocessor took 30.08ms. Allocated memory is still 224.4MB. Free memory was 168.5MB in the beginning and 166.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 02:44:14,561 INFO L158 Benchmark]: RCFGBuilder took 577.33ms. Allocated memory is still 224.4MB. Free memory was 166.4MB in the beginning and 125.5MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-12-03 02:44:14,562 INFO L158 Benchmark]: CodeCheck took 545.46ms. Allocated memory is still 224.4MB. Free memory was 125.5MB in the beginning and 164.5MB in the end (delta: -38.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:44:14,562 INFO L158 Benchmark]: Witness Printer took 3.27ms. Allocated memory is still 224.4MB. Free memory was 164.5MB in the beginning and 163.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:44:14,566 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, 14 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, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: 1561]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1570, overapproximation of bitwiseOr at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 0; [L1570] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1570] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, \old(argc)=12, argc=12, argv={14:13}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_rand_predec_04_bad() [L1552] int data; [L1553] data = 0 [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1556] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) [L1556] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand() [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1556] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1558] COND TRUE \read(STATIC_CONST_TRUE) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1561] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, 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 0.22ms. Allocated memory is still 172.0MB. Free memory was 114.2MB in the beginning and 114.0MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1012.37ms. Allocated memory was 172.0MB in the beginning and 224.4MB in the end (delta: 52.4MB). Free memory was 123.5MB in the beginning and 171.7MB in the end (delta: -48.1MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.53ms. Allocated memory is still 224.4MB. Free memory was 171.7MB in the beginning and 168.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.08ms. Allocated memory is still 224.4MB. Free memory was 168.5MB in the beginning and 166.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 577.33ms. Allocated memory is still 224.4MB. Free memory was 166.4MB in the beginning and 125.5MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * CodeCheck took 545.46ms. Allocated memory is still 224.4MB. Free memory was 125.5MB in the beginning and 164.5MB in the end (delta: -38.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.27ms. Allocated memory is still 224.4MB. Free memory was 164.5MB in the beginning and 163.4MB in the end (delta: 1.0MB). 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~nondet112 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite109 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite109 could not be translated - 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 [2023-12-03 02:44:14,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/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_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/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_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/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_bc638478-df23-49f8-a890-2ea5f7756ade/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 81428a5976272df28d81c77eeefb812a03cab2a0ce49799baa4104daee6926e4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 02:44:16,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 02:44:16,535 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-12-03 02:44:16,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 02:44:16,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 02:44:16,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 02:44:16,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 02:44:16,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 02:44:16,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 02:44:16,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 02:44:16,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 02:44:16,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 02:44:16,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 02:44:16,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 02:44:16,570 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-03 02:44:16,570 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-03 02:44:16,571 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-03 02:44:16,571 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-03 02:44:16,572 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 02:44:16,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 02:44:16,573 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 02:44:16,573 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 02:44:16,574 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 02:44:16,574 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 02:44:16,574 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 02:44:16,575 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-03 02:44:16,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 02:44:16,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:44:16,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 02:44:16,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 02:44:16,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 02:44:16,577 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-03 02:44:16,577 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 02:44:16,577 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 02:44:16,578 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-03 02:44:16,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-03 02:44:16,578 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_bc638478-df23-49f8-a890-2ea5f7756ade/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81428a5976272df28d81c77eeefb812a03cab2a0ce49799baa4104daee6926e4 [2023-12-03 02:44:16,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 02:44:16,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 02:44:16,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 02:44:16,885 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 02:44:16,885 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 02:44:16,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_04_bad.i [2023-12-03 02:44:19,533 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 02:44:19,846 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 02:44:19,847 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_predec_04_bad.i [2023-12-03 02:44:19,867 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/data/360acd337/0851a0cdfe1d4c64ba7290b9f75fcb36/FLAG70057e013 [2023-12-03 02:44:19,880 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/data/360acd337/0851a0cdfe1d4c64ba7290b9f75fcb36 [2023-12-03 02:44:19,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 02:44:19,883 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 02:44:19,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 02:44:19,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 02:44:19,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 02:44:19,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:44:19" (1/1) ... [2023-12-03 02:44:19,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d72d6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:19, skipping insertion in model container [2023-12-03 02:44:19,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:44:19" (1/1) ... [2023-12-03 02:44:19,948 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 02:44:20,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:44:20,671 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 02:44:20,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:44:20,887 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 02:44:20,888 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 02:44:20,888 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 02:44:20,888 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 02:44:20,896 INFO L206 MainTranslator]: Completed translation [2023-12-03 02:44:20,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20 WrapperNode [2023-12-03 02:44:20,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 02:44:20,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 02:44:20,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 02:44:20,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 02:44:20,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,958 INFO L138 Inliner]: procedures = 503, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-12-03 02:44:20,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 02:44:20,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 02:44:20,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 02:44:20,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 02:44:20,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,984 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:20,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 02:44:20,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 02:44:20,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 02:44:20,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 02:44:20,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:44:20" (1/1) ... [2023-12-03 02:44:21,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:44:21,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 02:44:21,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 02:44:21,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 02:44:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-03 02:44:21,064 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-03 02:44:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-03 02:44:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 02:44:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 02:44:21,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 02:44:21,065 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-03 02:44:21,208 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 02:44:21,210 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 02:44:21,334 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 02:44:21,406 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 02:44:21,406 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-03 02:44:21,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:44:21 BoogieIcfgContainer [2023-12-03 02:44:21,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 02:44:21,409 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 02:44:21,409 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 02:44:21,419 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 02:44:21,419 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:44:21" (1/1) ... [2023-12-03 02:44:21,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 02:44:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:44:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 14 states and 15 transitions. [2023-12-03 02:44:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-03 02:44:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 02:44:21,487 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:44:21,488 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 02:44:21,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 02:44:21,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 02:44:21,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-03 02:44:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:44:21,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 02:44:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:44:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:44:21,825 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 02:44:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:44:21,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-03 02:44:21,873 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-03 02:44:21,895 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet106 [2023-12-03 02:44:21,899 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated [2023-12-03 02:44:21,899 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated [2023-12-03 02:44:21,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 02:44:21 ImpRootNode [2023-12-03 02:44:21,904 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 02:44:21,905 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 02:44:21,905 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 02:44:21,905 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 02:44:21,905 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:44:21" (3/4) ... [2023-12-03 02:44:21,907 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-03 02:44:21,908 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 02:44:21,909 INFO L158 Benchmark]: Toolchain (without parser) took 2026.10ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 42.1MB in the beginning and 47.7MB in the end (delta: -5.6MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2023-12-03 02:44:21,910 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 73.4MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:44:21,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1012.93ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 41.9MB in the beginning and 62.0MB in the end (delta: -20.0MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-12-03 02:44:21,911 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.42ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 58.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 02:44:21,912 INFO L158 Benchmark]: Boogie Preprocessor took 36.68ms. Allocated memory is still 98.6MB. Free memory was 58.3MB in the beginning and 56.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 02:44:21,912 INFO L158 Benchmark]: RCFGBuilder took 411.07ms. Allocated memory is still 98.6MB. Free memory was 56.7MB in the beginning and 65.0MB in the end (delta: -8.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-03 02:44:21,913 INFO L158 Benchmark]: CodeCheck took 495.42ms. Allocated memory is still 98.6MB. Free memory was 64.5MB in the beginning and 48.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-03 02:44:21,913 INFO L158 Benchmark]: Witness Printer took 3.77ms. Allocated memory is still 98.6MB. Free memory was 48.0MB in the beginning and 47.7MB in the end (delta: 300.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:44:21,917 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, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: 1561]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1570. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 0; [L1570] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1570] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_rand_predec_04_bad() [L1552] int data; [L1553] data = 0 [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1556] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1558] COND TRUE \read(STATIC_CONST_TRUE) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1561] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, 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 0.29ms. Allocated memory is still 73.4MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1012.93ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 41.9MB in the beginning and 62.0MB in the end (delta: -20.0MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.42ms. Allocated memory is still 98.6MB. Free memory was 61.8MB in the beginning and 58.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.68ms. Allocated memory is still 98.6MB. Free memory was 58.3MB in the beginning and 56.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 411.07ms. Allocated memory is still 98.6MB. Free memory was 56.7MB in the beginning and 65.0MB in the end (delta: -8.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 495.42ms. Allocated memory is still 98.6MB. Free memory was 64.5MB in the beginning and 48.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.77ms. Allocated memory is still 98.6MB. Free memory was 48.0MB in the beginning and 47.7MB in the end (delta: 300.4kB). 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~nondet106 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated - 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 [2023-12-03 02:44:21,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc638478-df23-49f8-a890-2ea5f7756ade/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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