./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_64_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm --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 69fdb971886e5b8539bd7c91c2ed2613ec546f694a2601ecdfc5a8a5474e7fce --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 22:22:37,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 22:22:37,133 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-64bit-Kojak_Default.epf [2024-11-13 22:22:37,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 22:22:37,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 22:22:37,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 22:22:37,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 22:22:37,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 22:22:37,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 22:22:37,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 22:22:37,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 22:22:37,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 22:22:37,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 22:22:37,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 22:22:37,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 22:22:37,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 22:22:37,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 22:22:37,164 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 22:22:37,164 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 22:22:37,164 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 22:22:37,165 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 22:22:37,165 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 22:22:37,165 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 22:22:37,165 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 22:22:37,165 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 22:22:37,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 22:22:37,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:22:37,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 22:22:37,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 22:22:37,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 22:22:37,169 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 22:22:37,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 22:22:37,169 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_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm 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 -> 69fdb971886e5b8539bd7c91c2ed2613ec546f694a2601ecdfc5a8a5474e7fce [2024-11-13 22:22:37,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 22:22:37,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 22:22:37,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 22:22:37,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 22:22:37,497 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 22:22:37,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_64_bad.i Unable to find full path for "g++" [2024-11-13 22:22:40,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 22:22:40,609 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 22:22:40,609 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_64_bad.i [2024-11-13 22:22:40,637 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/data/0e9618b04/11f17fd9eb3d4a049fbbd357d2f44651/FLAG2d56c568f [2024-11-13 22:22:40,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/data/0e9618b04/11f17fd9eb3d4a049fbbd357d2f44651 [2024-11-13 22:22:40,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 22:22:40,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 22:22:40,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 22:22:40,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 22:22:40,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 22:22:40,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:22:40" (1/1) ... [2024-11-13 22:22:40,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463c3262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:40, skipping insertion in model container [2024-11-13 22:22:40,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:22:40" (1/1) ... [2024-11-13 22:22:40,728 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 22:22:41,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:22:41,962 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 22:22:42,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:22:42,348 INFO L204 MainTranslator]: Completed translation [2024-11-13 22:22:42,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42 WrapperNode [2024-11-13 22:22:42,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 22:22:42,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 22:22:42,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 22:22:42,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 22:22:42,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,406 INFO L138 Inliner]: procedures = 499, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-11-13 22:22:42,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 22:22:42,407 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 22:22:42,407 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 22:22:42,407 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 22:22:42,416 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 22:22:42,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 22:22:42,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 22:22:42,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 22:22:42,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:22:42,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 22:22:42,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 22:22:42,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 22:22:42,516 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-13 22:22:42,516 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-13 22:22:42,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 22:22:42,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 22:22:42,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 22:22:42,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 22:22:42,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 22:22:42,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 22:22:42,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 22:22:42,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 22:22:42,706 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 22:22:42,708 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 22:22:42,909 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-13 22:22:42,909 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 22:22:42,956 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 22:22:42,956 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 22:22:42,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:22:42 BoogieIcfgContainer [2024-11-13 22:22:42,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 22:22:42,961 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 22:22:42,961 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 22:22:42,979 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 22:22:42,980 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:22:42" (1/1) ... [2024-11-13 22:22:42,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 22:22:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:22:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2024-11-13 22:22:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-13 22:22:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 22:22:43,056 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:22:43,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:22:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:22:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:22:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:22:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2024-11-13 22:22:43,992 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-13 22:22:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 22:22:43,993 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:22:43,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 22:22:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:22:44,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:22:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:22:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:22:44,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:22:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:22:44,313 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-11-13 22:22:44,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 10:22:44 ImpRootNode [2024-11-13 22:22:44,365 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 22:22:44,366 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 22:22:44,366 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 22:22:44,367 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 22:22:44,368 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:22:42" (3/4) ... [2024-11-13 22:22:44,371 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 22:22:44,372 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 22:22:44,373 INFO L158 Benchmark]: Toolchain (without parser) took 3712.39ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 45.3MB in the end (delta: 45.7MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2024-11-13 22:22:44,373 INFO L158 Benchmark]: CDTParser took 1.00ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:22:44,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1687.08ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 80.9MB in the end (delta: 9.7MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2024-11-13 22:22:44,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.69ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 78.6MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 22:22:44,379 INFO L158 Benchmark]: Boogie Preprocessor took 27.96ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 77.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:22:44,380 INFO L158 Benchmark]: RCFGBuilder took 522.27ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 62.5MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 22:22:44,380 INFO L158 Benchmark]: CodeCheck took 1404.57ms. Allocated memory is still 117.4MB. Free memory was 62.5MB in the beginning and 45.3MB in the end (delta: 17.2MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2024-11-13 22:22:44,381 INFO L158 Benchmark]: Witness Printer took 5.71ms. Allocated memory is still 117.4MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 9.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:22:44,387 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, 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, 0.6s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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 - UnprovableResult [Line: 1579]: 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 large string literal at line 1569, 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_postinc_64_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={12832:0}, 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_postinc_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1579] data++ 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 1.00ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1687.08ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 80.9MB in the end (delta: 9.7MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.69ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 78.6MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.96ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 77.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 522.27ms. Allocated memory is still 117.4MB. Free memory was 77.4MB in the beginning and 62.5MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1404.57ms. Allocated memory is still 117.4MB. Free memory was 62.5MB in the beginning and 45.3MB in the end (delta: 17.2MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Witness Printer took 5.71ms. Allocated memory is still 117.4MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 9.8kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 22:22:44,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/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_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm --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 69fdb971886e5b8539bd7c91c2ed2613ec546f694a2601ecdfc5a8a5474e7fce --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 22:22:47,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 22:22:47,964 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2024-11-13 22:22:48,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 22:22:48,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 22:22:48,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 22:22:48,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 22:22:48,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 22:22:48,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 22:22:48,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 22:22:48,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 22:22:48,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 22:22:48,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 22:22:48,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 22:22:48,007 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 22:22:48,007 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 22:22:48,007 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 22:22:48,007 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 22:22:48,008 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 22:22:48,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 22:22:48,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 22:22:48,008 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 22:22:48,008 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 22:22:48,008 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 22:22:48,008 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 22:22:48,009 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 22:22:48,009 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-11-13 22:22:48,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 22:22:48,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:22:48,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 22:22:48,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 22:22:48,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 22:22:48,010 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-13 22:22:48,010 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 22:22:48,010 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-11-13 22:22:48,010 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_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm 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 -> 69fdb971886e5b8539bd7c91c2ed2613ec546f694a2601ecdfc5a8a5474e7fce [2024-11-13 22:22:48,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 22:22:48,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 22:22:48,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 22:22:48,415 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 22:22:48,416 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 22:22:48,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_64_bad.i Unable to find full path for "g++" [2024-11-13 22:22:50,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 22:22:50,872 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 22:22:50,876 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_64_bad.i [2024-11-13 22:22:50,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/data/3aee81766/bf23558a8bf049b082ccd6b3134bfd49/FLAGac5466456 [2024-11-13 22:22:50,987 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/data/3aee81766/bf23558a8bf049b082ccd6b3134bfd49 [2024-11-13 22:22:50,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 22:22:50,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 22:22:50,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 22:22:50,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 22:22:51,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 22:22:51,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:22:50" (1/1) ... [2024-11-13 22:22:51,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1daf874f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:51, skipping insertion in model container [2024-11-13 22:22:51,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 10:22:50" (1/1) ... [2024-11-13 22:22:51,073 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 22:22:51,993 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 22:22:51,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:22:52,016 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 22:22:52,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 22:22:52,295 INFO L204 MainTranslator]: Completed translation [2024-11-13 22:22:52,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52 WrapperNode [2024-11-13 22:22:52,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 22:22:52,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 22:22:52,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 22:22:52,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 22:22:52,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,358 INFO L138 Inliner]: procedures = 504, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2024-11-13 22:22:52,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 22:22:52,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 22:22:52,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 22:22:52,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 22:22:52,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,378 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 22:22:52,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 22:22:52,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 22:22:52,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 22:22:52,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 22:22:52,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 22:22:52,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 22:22:52,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 22:22:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-13 22:22:52,455 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-13 22:22:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 22:22:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-13 22:22:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 22:22:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 22:22:52,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 22:22:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-13 22:22:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 22:22:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-13 22:22:52,633 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 22:22:52,635 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 22:22:52,852 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-13 22:22:52,852 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 22:22:52,900 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 22:22:52,900 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 22:22:52,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:22:52 BoogieIcfgContainer [2024-11-13 22:22:52,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 22:22:52,903 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 22:22:52,903 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 22:22:52,922 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 22:22:52,923 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:22:52" (1/1) ... [2024-11-13 22:22:52,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 22:22:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:22:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2024-11-13 22:22:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-13 22:22:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 22:22:52,980 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:22:52,981 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 22:22:52,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/cvc4 [2024-11-13 22:22:52,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 22:22:52,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-13 22:22:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:22:53,172 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-13 22:22:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 22:22:53,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 22:22:53,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 22:22:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 22:22:53,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-13 22:22:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 22:22:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2024-11-13 22:22:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-13 22:22:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 22:22:53,305 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 22:22:53,305 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 22:22:53,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/cvc4 [2024-11-13 22:22:53,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 22:22:53,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-13 22:22:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:22:53,586 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:22:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:22:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:22:53,856 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 22:22:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 22:22:53,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-13 22:22:53,942 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-11-13 22:22:53,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 10:22:53 ImpRootNode [2024-11-13 22:22:53,977 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 22:22:53,978 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 22:22:53,978 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 22:22:53,978 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 22:22:53,979 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 10:22:52" (3/4) ... [2024-11-13 22:22:53,982 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 22:22:53,982 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 22:22:53,985 INFO L158 Benchmark]: Toolchain (without parser) took 2990.77ms. Allocated memory is still 83.9MB. Free memory was 57.7MB in the beginning and 38.7MB in the end (delta: 19.0MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2024-11-13 22:22:53,985 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:22:53,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1301.39ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 52.3MB in the end (delta: 5.2MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. [2024-11-13 22:22:53,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.96ms. Allocated memory is still 83.9MB. Free memory was 52.3MB in the beginning and 49.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:22:53,990 INFO L158 Benchmark]: Boogie Preprocessor took 27.56ms. Allocated memory is still 83.9MB. Free memory was 49.2MB in the beginning and 47.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:22:53,991 INFO L158 Benchmark]: RCFGBuilder took 514.10ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 29.6MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 22:22:53,991 INFO L158 Benchmark]: CodeCheck took 1074.09ms. Allocated memory is still 83.9MB. Free memory was 29.6MB in the beginning and 39.2MB in the end (delta: -9.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:22:53,991 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 83.9MB. Free memory was 39.2MB in the beginning and 38.7MB in the end (delta: 455.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 22:22:53,993 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, 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, 12 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, 12 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 82 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 - UnprovableResult [Line: 1579]: 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 large string literal at line 1569, 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_postinc_64_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={5:0}, 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_postinc_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1579] data++ 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 0.41ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1301.39ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 52.3MB in the end (delta: 5.2MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.96ms. Allocated memory is still 83.9MB. Free memory was 52.3MB in the beginning and 49.5MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.56ms. Allocated memory is still 83.9MB. Free memory was 49.2MB in the beginning and 47.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 514.10ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 29.6MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1074.09ms. Allocated memory is still 83.9MB. Free memory was 29.6MB in the beginning and 39.2MB in the end (delta: -9.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 83.9MB. Free memory was 39.2MB in the beginning and 38.7MB in the end (delta: 455.7kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 22:22:54,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb8590d5-8f93-440d-8850-ccd2be08dfc9/bin/ukojak-verify-EEHR8qb7sm/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