./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_18_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk --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 422d487fc4803915b884cfbccf45368b75597c3868b043f6ad0764f99b52e6a0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 23:30:42,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 23:30:42,916 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Overflow-64bit-Kojak_Default.epf [2024-11-08 23:30:42,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 23:30:42,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 23:30:42,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 23:30:42,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 23:30:42,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 23:30:42,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 23:30:42,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 23:30:42,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 23:30:42,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 23:30:42,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 23:30:42,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 23:30:42,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 23:30:42,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 23:30:42,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 23:30:42,961 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 23:30:42,961 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 23:30:42,961 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 23:30:42,962 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 23:30:42,967 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 23:30:42,967 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 23:30:42,968 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 23:30:42,968 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 23:30:42,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 23:30:42,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:30:42,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 23:30:42,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 23:30:42,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 23:30:42,970 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 23:30:42,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 23:30:42,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422d487fc4803915b884cfbccf45368b75597c3868b043f6ad0764f99b52e6a0 [2024-11-08 23:30:43,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 23:30:43,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 23:30:43,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 23:30:43,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 23:30:43,425 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 23:30:43,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_18_bad.i Unable to find full path for "g++" [2024-11-08 23:30:46,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 23:30:46,437 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 23:30:46,442 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_18_bad.i [2024-11-08 23:30:46,485 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/data/28f1593ce/9f13c155fe8549e580ae73b3e48d7cfe/FLAGad2212642 [2024-11-08 23:30:46,577 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/data/28f1593ce/9f13c155fe8549e580ae73b3e48d7cfe [2024-11-08 23:30:46,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 23:30:46,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 23:30:46,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 23:30:46,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 23:30:46,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 23:30:46,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:30:46" (1/1) ... [2024-11-08 23:30:46,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673e6bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:46, skipping insertion in model container [2024-11-08 23:30:46,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:30:46" (1/1) ... [2024-11-08 23:30:46,698 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 23:30:48,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:30:48,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 23:30:48,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:30:48,489 INFO L204 MainTranslator]: Completed translation [2024-11-08 23:30:48,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48 WrapperNode [2024-11-08 23:30:48,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 23:30:48,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 23:30:48,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 23:30:48,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 23:30:48,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,561 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-11-08 23:30:48,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 23:30:48,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 23:30:48,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 23:30:48,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 23:30:48,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 23:30:48,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 23:30:48,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 23:30:48,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 23:30:48,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:48" (1/1) ... [2024-11-08 23:30:48,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:30:48,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 23:30:48,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 23:30:48,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 23:30:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 23:30:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 23:30:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 23:30:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 23:30:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 23:30:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 23:30:48,915 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 23:30:48,917 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 23:30:49,108 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-08 23:30:49,109 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 23:30:49,168 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 23:30:49,169 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 23:30:49,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:30:49 BoogieIcfgContainer [2024-11-08 23:30:49,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 23:30:49,171 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 23:30:49,171 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 23:30:49,185 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 23:30:49,185 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:30:49" (1/1) ... [2024-11-08 23:30:49,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 23:30:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:30:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2024-11-08 23:30:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-08 23:30:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 23:30:49,278 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:30:49,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:30:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:30:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:30:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:30:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2024-11-08 23:30:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-08 23:30:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 23:30:49,784 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:30:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:30:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:30:49,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:30:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:30:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:30:49,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:30:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:30:49,991 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-11-08 23:30:50,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 11:30:50 ImpRootNode [2024-11-08 23:30:50,038 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 23:30:50,041 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 23:30:50,042 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 23:30:50,042 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 23:30:50,043 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:30:49" (3/4) ... [2024-11-08 23:30:50,046 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 23:30:50,048 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 23:30:50,049 INFO L158 Benchmark]: Toolchain (without parser) took 3465.55ms. Allocated memory is still 172.0MB. Free memory was 113.4MB in the beginning and 66.0MB in the end (delta: 47.4MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2024-11-08 23:30:50,050 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 125.8MB. Free memory was 96.0MB in the beginning and 96.0MB in the end (delta: 16.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:30:50,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1902.00ms. Allocated memory is still 172.0MB. Free memory was 113.1MB in the beginning and 110.0MB in the end (delta: 3.0MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2024-11-08 23:30:50,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.36ms. Allocated memory is still 172.0MB. Free memory was 110.0MB in the beginning and 107.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 23:30:50,053 INFO L158 Benchmark]: Boogie Preprocessor took 41.24ms. Allocated memory is still 172.0MB. Free memory was 107.1MB in the beginning and 105.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:30:50,055 INFO L158 Benchmark]: RCFGBuilder took 564.81ms. Allocated memory is still 172.0MB. Free memory was 105.8MB in the beginning and 91.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 23:30:50,056 INFO L158 Benchmark]: CodeCheck took 869.28ms. Allocated memory is still 172.0MB. Free memory was 91.2MB in the beginning and 66.6MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-08 23:30:50,057 INFO L158 Benchmark]: Witness Printer took 7.11ms. Allocated memory is still 172.0MB. Free memory was 66.6MB in the beginning and 66.0MB in the end (delta: 636.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:30:50,064 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 10 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 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 - UnprovableResult [Line: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1575, overapproximation of fgets at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1575] 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) [L1575] 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] [L1576] CALL CWE190_Integer_Overflow__int_fgets_add_18_bad() [L1550] int data; [L1551] data = 0 [L1555] 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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1568] 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 0.41ms. Allocated memory is still 125.8MB. Free memory was 96.0MB in the beginning and 96.0MB in the end (delta: 16.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1902.00ms. Allocated memory is still 172.0MB. Free memory was 113.1MB in the beginning and 110.0MB in the end (delta: 3.0MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.36ms. Allocated memory is still 172.0MB. Free memory was 110.0MB in the beginning and 107.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.24ms. Allocated memory is still 172.0MB. Free memory was 107.1MB in the beginning and 105.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 564.81ms. Allocated memory is still 172.0MB. Free memory was 105.8MB in the beginning and 91.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 869.28ms. Allocated memory is still 172.0MB. Free memory was 91.2MB in the beginning and 66.6MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 7.11ms. Allocated memory is still 172.0MB. Free memory was 66.6MB in the beginning and 66.0MB in the end (delta: 636.2kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 23:30:50,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk --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 422d487fc4803915b884cfbccf45368b75597c3868b043f6ad0764f99b52e6a0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 23:30:53,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 23:30:53,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2024-11-08 23:30:53,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 23:30:53,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 23:30:53,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 23:30:53,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 23:30:53,441 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 23:30:53,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 23:30:53,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 23:30:53,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 23:30:53,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 23:30:53,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 23:30:53,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 23:30:53,448 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 23:30:53,449 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 23:30:53,449 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 23:30:53,450 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 23:30:53,450 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 23:30:53,451 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 23:30:53,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 23:30:53,452 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 23:30:53,452 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 23:30:53,453 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 23:30:53,453 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 23:30:53,454 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 23:30:53,454 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-11-08 23:30:53,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 23:30:53,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:30:53,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 23:30:53,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 23:30:53,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 23:30:53,457 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-08 23:30:53,458 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 23:30:53,458 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-11-08 23:30:53,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422d487fc4803915b884cfbccf45368b75597c3868b043f6ad0764f99b52e6a0 [2024-11-08 23:30:54,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 23:30:54,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 23:30:54,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 23:30:54,064 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 23:30:54,065 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 23:30:54,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_18_bad.i Unable to find full path for "g++" [2024-11-08 23:30:56,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 23:30:57,294 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 23:30:57,297 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_add_18_bad.i [2024-11-08 23:30:57,337 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/data/818d44db9/18445758dab8460fb508dc82f8e337ee/FLAGf0b8a62e4 [2024-11-08 23:30:57,362 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/data/818d44db9/18445758dab8460fb508dc82f8e337ee [2024-11-08 23:30:57,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 23:30:57,367 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 23:30:57,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 23:30:57,371 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 23:30:57,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 23:30:57,379 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:30:57" (1/1) ... [2024-11-08 23:30:57,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd3be00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:57, skipping insertion in model container [2024-11-08 23:30:57,380 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:30:57" (1/1) ... [2024-11-08 23:30:57,468 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 23:30:58,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:30:58,797 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 23:30:58,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:30:59,085 INFO L204 MainTranslator]: Completed translation [2024-11-08 23:30:59,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59 WrapperNode [2024-11-08 23:30:59,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 23:30:59,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 23:30:59,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 23:30:59,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 23:30:59,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,183 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-11-08 23:30:59,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 23:30:59,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 23:30:59,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 23:30:59,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 23:30:59,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 23:30:59,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 23:30:59,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 23:30:59,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 23:30:59,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:30:59,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 23:30:59,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 23:30:59,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 23:30:59,316 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 23:30:59,316 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 23:30:59,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-08 23:30:59,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 23:30:59,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 23:30:59,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 23:30:59,545 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 23:30:59,548 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 23:30:59,727 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-08 23:30:59,728 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 23:30:59,788 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 23:30:59,788 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 23:30:59,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:30:59 BoogieIcfgContainer [2024-11-08 23:30:59,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 23:30:59,790 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 23:30:59,790 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 23:30:59,804 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 23:30:59,805 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:30:59" (1/1) ... [2024-11-08 23:30:59,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 23:30:59,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:30:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2024-11-08 23:30:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-08 23:30:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 23:30:59,900 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:30:59,900 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 23:30:59,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 23:30:59,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 23:30:59,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-08 23:31:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:31:00,119 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-08 23:31:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:31:00,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 23:31:00,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 23:31:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:31:00,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-08 23:31:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:31:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2024-11-08 23:31:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-08 23:31:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 23:31:00,257 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:31:00,257 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 23:31:00,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 23:31:00,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 23:31:00,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-08 23:31:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:31:00,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:31:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:31:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:31:00,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:31:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:31:00,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-08 23:31:00,553 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-11-08 23:31:00,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 11:31:00 ImpRootNode [2024-11-08 23:31:00,582 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 23:31:00,583 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 23:31:00,583 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 23:31:00,583 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 23:31:00,584 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:30:59" (3/4) ... [2024-11-08 23:31:00,588 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 23:31:00,589 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 23:31:00,591 INFO L158 Benchmark]: Toolchain (without parser) took 3223.40ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 33.0MB in the beginning and 52.9MB in the end (delta: -19.9MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2024-11-08 23:31:00,591 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:31:00,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1717.30ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 32.7MB in the beginning and 37.2MB in the end (delta: -4.5MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2024-11-08 23:31:00,593 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.98ms. Allocated memory is still 94.4MB. Free memory was 37.2MB in the beginning and 64.6MB in the end (delta: -27.4MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-11-08 23:31:00,594 INFO L158 Benchmark]: Boogie Preprocessor took 61.08ms. Allocated memory is still 94.4MB. Free memory was 64.6MB in the beginning and 63.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:31:00,598 INFO L158 Benchmark]: RCFGBuilder took 543.03ms. Allocated memory is still 94.4MB. Free memory was 62.5MB in the beginning and 45.2MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 23:31:00,599 INFO L158 Benchmark]: CodeCheck took 792.24ms. Allocated memory is still 94.4MB. Free memory was 45.2MB in the beginning and 52.9MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:31:00,599 INFO L158 Benchmark]: Witness Printer took 6.71ms. Allocated memory is still 94.4MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:31:00,606 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: 0.7s, 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, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 3 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, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 36 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1575, overapproximation of fgets at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1575] 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) [L1575] 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] [L1576] CALL CWE190_Integer_Overflow__int_fgets_add_18_bad() [L1550] int data; [L1551] data = 0 [L1555] 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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1568] 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 0.36ms. Allocated memory is still 60.8MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1717.30ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 32.7MB in the beginning and 37.2MB in the end (delta: -4.5MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.98ms. Allocated memory is still 94.4MB. Free memory was 37.2MB in the beginning and 64.6MB in the end (delta: -27.4MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.08ms. Allocated memory is still 94.4MB. Free memory was 64.6MB in the beginning and 63.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 543.03ms. Allocated memory is still 94.4MB. Free memory was 62.5MB in the beginning and 45.2MB in the end (delta: 17.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 792.24ms. Allocated memory is still 94.4MB. Free memory was 45.2MB in the beginning and 52.9MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.71ms. Allocated memory is still 94.4MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 23:31:00,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43e2e780-b0af-46f7-bb24-d339bf17154c/bin/ukojak-verify-ImItNfHLgk/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