./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b --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 67ffb06f55f3e3a0d5de3e3e30d88dbb86aea47b00f25ab682eaebca9ddb1d73 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 01:42:39,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 01:42:39,316 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Default.epf [2024-12-06 01:42:39,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 01:42:39,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 01:42:39,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 01:42:39,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 01:42:39,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 01:42:39,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 01:42:39,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 01:42:39,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 01:42:39,342 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 01:42:39,342 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 01:42:39,342 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 01:42:39,342 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 01:42:39,342 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 01:42:39,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 01:42:39,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 01:42:39,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 01:42:39,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 01:42:39,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 01:42:39,342 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 01:42:39,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 01:42:39,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b 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 -> 67ffb06f55f3e3a0d5de3e3e30d88dbb86aea47b00f25ab682eaebca9ddb1d73 [2024-12-06 01:42:39,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 01:42:39,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 01:42:39,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 01:42:39,587 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 01:42:39,588 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 01:42:39,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i [2024-12-06 01:42:42,198 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data/57edb19ab/7b55585b02fa4b1ca3277d80f56ef39a/FLAGabe399628 [2024-12-06 01:42:42,537 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 01:42:42,538 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i [2024-12-06 01:42:42,555 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data/57edb19ab/7b55585b02fa4b1ca3277d80f56ef39a/FLAGabe399628 [2024-12-06 01:42:42,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data/57edb19ab/7b55585b02fa4b1ca3277d80f56ef39a [2024-12-06 01:42:42,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 01:42:42,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 01:42:42,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 01:42:42,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 01:42:42,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 01:42:42,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 01:42:42" (1/1) ... [2024-12-06 01:42:42,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3b3519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:42, skipping insertion in model container [2024-12-06 01:42:42,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 01:42:42" (1/1) ... [2024-12-06 01:42:42,830 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 01:42:43,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 01:42:43,434 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 01:42:43,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 01:42:43,602 INFO L204 MainTranslator]: Completed translation [2024-12-06 01:42:43,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43 WrapperNode [2024-12-06 01:42:43,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 01:42:43,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 01:42:43,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 01:42:43,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 01:42:43,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,648 INFO L138 Inliner]: procedures = 502, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 66 [2024-12-06 01:42:43,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 01:42:43,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 01:42:43,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 01:42:43,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 01:42:43,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,662 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 01:42:43,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 01:42:43,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 01:42:43,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 01:42:43,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 01:42:43,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 01:42:43,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 01:42:43,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 01:42:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-06 01:42:43,713 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-06 01:42:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 01:42:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 01:42:43,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 01:42:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 01:42:43,824 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 01:42:43,826 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 01:42:43,935 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-12-06 01:42:43,935 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 01:42:43,966 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 01:42:43,967 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-06 01:42:43,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:42:43 BoogieIcfgContainer [2024-12-06 01:42:43,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 01:42:43,968 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 01:42:43,968 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 01:42:43,978 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 01:42:43,978 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:42:43" (1/1) ... [2024-12-06 01:42:43,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 01:42:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:42:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2024-12-06 01:42:44,034 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-12-06 01:42:44,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 01:42:44,037 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:42:44,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:42:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:42:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 01:42:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:42:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2024-12-06 01:42:44,421 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-12-06 01:42:44,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 01:42:44,422 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:42:44,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:42:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:42:44,445 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 01:42:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:42:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:42:44,517 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 01:42:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:42:44,541 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-12-06 01:42:44,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 01:42:44 ImpRootNode [2024-12-06 01:42:44,566 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 01:42:44,566 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 01:42:44,566 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 01:42:44,567 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 01:42:44,567 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:42:43" (3/4) ... [2024-12-06 01:42:44,569 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-06 01:42:44,570 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 01:42:44,571 INFO L158 Benchmark]: Toolchain (without parser) took 1784.29ms. Allocated memory is still 142.6MB. Free memory was 115.3MB in the beginning and 58.1MB in the end (delta: 57.3MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2024-12-06 01:42:44,571 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:42:44,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 815.73ms. Allocated memory is still 142.6MB. Free memory was 115.3MB in the beginning and 54.0MB in the end (delta: 61.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-12-06 01:42:44,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.50ms. Allocated memory is still 142.6MB. Free memory was 54.0MB in the beginning and 113.2MB in the end (delta: -59.2MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2024-12-06 01:42:44,572 INFO L158 Benchmark]: Boogie Preprocessor took 18.76ms. Allocated memory is still 142.6MB. Free memory was 113.2MB in the beginning and 112.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:42:44,573 INFO L158 Benchmark]: RCFGBuilder took 299.09ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 97.9MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 01:42:44,573 INFO L158 Benchmark]: CodeCheck took 597.90ms. Allocated memory is still 142.6MB. Free memory was 97.9MB in the beginning and 58.7MB in the end (delta: 39.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-12-06 01:42:44,573 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 142.6MB. Free memory was 58.7MB in the beginning and 58.1MB in the end (delta: 601.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:42:44,575 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 9 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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, ConComCheckerStatistics: No data available - UnprovableResult [Line: 1592]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE190_Integer_Overflow__int_fgets_add_54_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE190_Integer_Overflow__int_fgets_add_54b_badSink(data) [L1577] CALL CWE190_Integer_Overflow__int_fgets_add_54c_badSink(data) [L1582] CALL CWE190_Integer_Overflow__int_fgets_add_54d_badSink(data) [L1587] CALL CWE190_Integer_Overflow__int_fgets_add_54e_badSink(data) [L1592] data + 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, 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 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 815.73ms. Allocated memory is still 142.6MB. Free memory was 115.3MB in the beginning and 54.0MB in the end (delta: 61.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.50ms. Allocated memory is still 142.6MB. Free memory was 54.0MB in the beginning and 113.2MB in the end (delta: -59.2MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.76ms. Allocated memory is still 142.6MB. Free memory was 113.2MB in the beginning and 112.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 299.09ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 97.9MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 597.90ms. Allocated memory is still 142.6MB. Free memory was 97.9MB in the beginning and 58.7MB in the end (delta: 39.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 142.6MB. Free memory was 58.7MB in the beginning and 58.1MB in the end (delta: 601.4kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-06 01:42:44,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b --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 67ffb06f55f3e3a0d5de3e3e30d88dbb86aea47b00f25ab682eaebca9ddb1d73 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 01:42:46,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 01:42:46,606 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2024-12-06 01:42:46,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 01:42:46,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 01:42:46,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 01:42:46,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 01:42:46,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 01:42:46,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 01:42:46,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 01:42:46,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 01:42:46,632 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 01:42:46,633 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 01:42:46,633 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 01:42:46,633 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 01:42:46,633 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 01:42:46,633 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-12-06 01:42:46,633 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-12-06 01:42:46,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 01:42:46,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 01:42:46,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 01:42:46,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 01:42:46,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 01:42:46,634 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-12-06 01:42:46,634 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-06 01:42:46,634 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-12-06 01:42:46,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b 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 -> 67ffb06f55f3e3a0d5de3e3e30d88dbb86aea47b00f25ab682eaebca9ddb1d73 [2024-12-06 01:42:46,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 01:42:46,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 01:42:46,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 01:42:46,871 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 01:42:46,871 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 01:42:46,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i [2024-12-06 01:42:49,530 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data/5c64e1c8e/09fcb58614bc4059967218779ff02cb4/FLAG635a378bf [2024-12-06 01:42:49,813 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 01:42:49,814 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_54_bad.i [2024-12-06 01:42:49,834 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data/5c64e1c8e/09fcb58614bc4059967218779ff02cb4/FLAG635a378bf [2024-12-06 01:42:49,848 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/data/5c64e1c8e/09fcb58614bc4059967218779ff02cb4 [2024-12-06 01:42:49,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 01:42:49,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 01:42:49,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 01:42:49,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 01:42:49,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 01:42:49,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 01:42:49" (1/1) ... [2024-12-06 01:42:49,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfa94a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:49, skipping insertion in model container [2024-12-06 01:42:49,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 01:42:49" (1/1) ... [2024-12-06 01:42:49,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 01:42:50,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 01:42:50,544 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 01:42:50,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 01:42:50,736 INFO L204 MainTranslator]: Completed translation [2024-12-06 01:42:50,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50 WrapperNode [2024-12-06 01:42:50,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 01:42:50,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 01:42:50,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 01:42:50,737 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 01:42:50,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,779 INFO L138 Inliner]: procedures = 507, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 65 [2024-12-06 01:42:50,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 01:42:50,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 01:42:50,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 01:42:50,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 01:42:50,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,796 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 01:42:50,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 01:42:50,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 01:42:50,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 01:42:50,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:42:50" (1/1) ... [2024-12-06 01:42:50,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 01:42:50,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 01:42:50,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 01:42:50,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 01:42:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-06 01:42:50,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-06 01:42:50,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-12-06 01:42:50,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 01:42:50,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 01:42:50,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 01:42:50,973 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 01:42:50,974 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 01:42:51,083 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-12-06 01:42:51,084 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 01:42:51,118 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 01:42:51,118 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-06 01:42:51,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:42:51 BoogieIcfgContainer [2024-12-06 01:42:51,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 01:42:51,119 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 01:42:51,119 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 01:42:51,128 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 01:42:51,129 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:42:51" (1/1) ... [2024-12-06 01:42:51,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 01:42:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:42:51,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2024-12-06 01:42:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-12-06 01:42:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 01:42:51,183 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:42:51,184 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-06 01:42:51,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-06 01:42:51,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-06 01:42:51,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-12-06 01:42:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:42:51,330 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-06 01:42:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:42:51,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-06 01:42:51,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-06 01:42:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 01:42:51,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-12-06 01:42:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:42:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2024-12-06 01:42:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-12-06 01:42:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 01:42:51,414 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:42:51,414 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-06 01:42:51,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-06 01:42:51,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-06 01:42:51,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-12-06 01:42:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:42:51,568 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 01:42:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:42:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:42:51,676 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 01:42:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:42:51,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-12-06 01:42:51,708 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-12-06 01:42:51,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 01:42:51 ImpRootNode [2024-12-06 01:42:51,734 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 01:42:51,734 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 01:42:51,734 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 01:42:51,735 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 01:42:51,735 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:42:51" (3/4) ... [2024-12-06 01:42:51,738 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-06 01:42:51,739 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 01:42:51,740 INFO L158 Benchmark]: Toolchain (without parser) took 1888.15ms. Allocated memory was 92.3MB in the beginning and 159.4MB in the end (delta: 67.1MB). Free memory was 65.8MB in the beginning and 105.7MB in the end (delta: -39.9MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2024-12-06 01:42:51,740 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:42:51,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 884.09ms. Allocated memory is still 92.3MB. Free memory was 65.7MB in the beginning and 58.7MB in the end (delta: 6.9MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2024-12-06 01:42:51,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.76ms. Allocated memory is still 92.3MB. Free memory was 58.7MB in the beginning and 56.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:42:51,741 INFO L158 Benchmark]: Boogie Preprocessor took 25.19ms. Allocated memory is still 92.3MB. Free memory was 56.1MB in the beginning and 54.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 01:42:51,742 INFO L158 Benchmark]: RCFGBuilder took 313.10ms. Allocated memory is still 92.3MB. Free memory was 54.3MB in the beginning and 37.9MB in the end (delta: 16.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 01:42:51,742 INFO L158 Benchmark]: CodeCheck took 614.87ms. Allocated memory was 92.3MB in the beginning and 159.4MB in the end (delta: 67.1MB). Free memory was 37.9MB in the beginning and 106.2MB in the end (delta: -68.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2024-12-06 01:42:51,743 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 159.4MB. Free memory was 106.2MB in the beginning and 105.7MB in the end (delta: 531.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:42:51,745 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 58 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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, ConComCheckerStatistics: No data available - UnprovableResult [Line: 1592]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE190_Integer_Overflow__int_fgets_add_54_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE190_Integer_Overflow__int_fgets_add_54b_badSink(data) [L1577] CALL CWE190_Integer_Overflow__int_fgets_add_54c_badSink(data) [L1582] CALL CWE190_Integer_Overflow__int_fgets_add_54d_badSink(data) [L1587] CALL CWE190_Integer_Overflow__int_fgets_add_54e_badSink(data) [L1592] data + 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, 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 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 884.09ms. Allocated memory is still 92.3MB. Free memory was 65.7MB in the beginning and 58.7MB in the end (delta: 6.9MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.76ms. Allocated memory is still 92.3MB. Free memory was 58.7MB in the beginning and 56.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.19ms. Allocated memory is still 92.3MB. Free memory was 56.1MB in the beginning and 54.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 313.10ms. Allocated memory is still 92.3MB. Free memory was 54.3MB in the beginning and 37.9MB in the end (delta: 16.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 614.87ms. Allocated memory was 92.3MB in the beginning and 159.4MB in the end (delta: 67.1MB). Free memory was 37.9MB in the beginning and 106.2MB in the end (delta: -68.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 159.4MB. Free memory was 106.2MB in the beginning and 105.7MB in the end (delta: 531.4kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-06 01:42:51,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77771832-66cc-408d-b949-1f3fb7152441/bin/ukojak-verify-CZk0znPC7b/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