./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_preinc_02_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/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_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_preinc_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/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_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/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 c0898bce60d3b5ee6875cd987db5ed8fbfc9e5f445df6eb1b85df765e321d987 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 22:23:30,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 22:23:30,662 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Overflow-64bit-Kojak_Default.epf [2024-11-08 22:23:30,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 22:23:30,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 22:23:30,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 22:23:30,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 22:23:30,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 22:23:30,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 22:23:30,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 22:23:30,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 22:23:30,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 22:23:30,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 22:23:30,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 22:23:30,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 22:23:30,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 22:23:30,716 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 22:23:30,717 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 22:23:30,717 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 22:23:30,717 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 22:23:30,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 22:23:30,722 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 22:23:30,723 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 22:23:30,723 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 22:23:30,723 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 22:23:30,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 22:23:30,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:23:30,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 22:23:30,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 22:23:30,725 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 22:23:30,726 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 22:23:30,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 22:23:30,728 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_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0898bce60d3b5ee6875cd987db5ed8fbfc9e5f445df6eb1b85df765e321d987 [2024-11-08 22:23:31,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 22:23:31,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 22:23:31,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 22:23:31,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 22:23:31,111 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 22:23:31,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_preinc_02_bad.i Unable to find full path for "g++" [2024-11-08 22:23:33,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 22:23:33,584 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 22:23:33,587 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_preinc_02_bad.i [2024-11-08 22:23:33,625 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/data/b053f1d0a/177c1d0642454283b7147e86b6f71fa8/FLAG024bfbb08 [2024-11-08 22:23:33,733 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/data/b053f1d0a/177c1d0642454283b7147e86b6f71fa8 [2024-11-08 22:23:33,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 22:23:33,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 22:23:33,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 22:23:33,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 22:23:33,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 22:23:33,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:23:33" (1/1) ... [2024-11-08 22:23:33,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54474488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:33, skipping insertion in model container [2024-11-08 22:23:33,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:23:33" (1/1) ... [2024-11-08 22:23:33,824 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 22:23:35,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:23:35,100 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 22:23:35,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:23:35,339 INFO L204 MainTranslator]: Completed translation [2024-11-08 22:23:35,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35 WrapperNode [2024-11-08 22:23:35,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 22:23:35,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 22:23:35,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 22:23:35,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 22:23:35,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,408 INFO L138 Inliner]: procedures = 497, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2024-11-08 22:23:35,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 22:23:35,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 22:23:35,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 22:23:35,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 22:23:35,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 22:23:35,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 22:23:35,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 22:23:35,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 22:23:35,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:23:35,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 22:23:35,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 22:23:35,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 22:23:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 22:23:35,545 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 22:23:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 22:23:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 22:23:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 22:23:35,720 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 22:23:35,722 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 22:23:35,838 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-08 22:23:35,839 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 22:23:35,913 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 22:23:35,914 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 22:23:35,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:23:35 BoogieIcfgContainer [2024-11-08 22:23:35,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 22:23:35,915 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 22:23:35,916 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 22:23:35,926 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 22:23:35,927 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:23:35" (1/1) ... [2024-11-08 22:23:35,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 22:23:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:23:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2024-11-08 22:23:36,007 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-08 22:23:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-08 22:23:36,013 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:23:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:23:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:23:36,307 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 22:23:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:23:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-08 22:23:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-08 22:23:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 22:23:36,350 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:23:36,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 22:23:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:23:36,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:23:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:23:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:23:36,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:23:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:23:36,513 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-11-08 22:23:36,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 10:23:36 ImpRootNode [2024-11-08 22:23:36,552 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 22:23:36,553 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 22:23:36,553 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 22:23:36,553 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 22:23:36,555 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:23:35" (3/4) ... [2024-11-08 22:23:36,558 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 22:23:36,559 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 22:23:36,560 INFO L158 Benchmark]: Toolchain (without parser) took 2821.42ms. Allocated memory is still 148.9MB. Free memory was 113.9MB in the beginning and 82.9MB in the end (delta: 31.0MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2024-11-08 22:23:36,561 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:23:36,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1597.79ms. Allocated memory is still 148.9MB. Free memory was 113.3MB in the beginning and 93.4MB in the end (delta: 20.0MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2024-11-08 22:23:36,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.19ms. Allocated memory is still 148.9MB. Free memory was 93.4MB in the beginning and 91.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:23:36,564 INFO L158 Benchmark]: Boogie Preprocessor took 29.55ms. Allocated memory is still 148.9MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:23:36,566 INFO L158 Benchmark]: RCFGBuilder took 474.79ms. Allocated memory is still 148.9MB. Free memory was 89.2MB in the beginning and 103.9MB in the end (delta: -14.7MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2024-11-08 22:23:36,566 INFO L158 Benchmark]: CodeCheck took 636.83ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 82.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-08 22:23:36,568 INFO L158 Benchmark]: Witness Printer took 6.81ms. Allocated memory is still 148.9MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:23:36,572 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, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 4 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 35 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, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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: 1559]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1568. 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); [L1568] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={1:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1568] 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] [L1569] CALL CWE190_Integer_Overflow__int_max_preinc_02_bad() [L1550] int data; [L1551] data = 0 [L1554] data = 0x7fffffff VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1559] ++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 0.36ms. Allocated memory is still 111.1MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1597.79ms. Allocated memory is still 148.9MB. Free memory was 113.3MB in the beginning and 93.4MB in the end (delta: 20.0MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.19ms. Allocated memory is still 148.9MB. Free memory was 93.4MB in the beginning and 91.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.55ms. Allocated memory is still 148.9MB. Free memory was 91.3MB in the beginning and 89.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 474.79ms. Allocated memory is still 148.9MB. Free memory was 89.2MB in the beginning and 103.9MB in the end (delta: -14.7MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * CodeCheck took 636.83ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 82.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 6.81ms. Allocated memory is still 148.9MB. Free memory is still 82.9MB. 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 22:23:36,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/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_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_preinc_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/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_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/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 c0898bce60d3b5ee6875cd987db5ed8fbfc9e5f445df6eb1b85df765e321d987 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 22:23:39,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 22:23:39,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2024-11-08 22:23:39,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 22:23:39,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 22:23:39,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 22:23:39,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 22:23:39,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 22:23:39,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 22:23:39,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 22:23:39,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 22:23:39,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 22:23:39,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 22:23:39,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 22:23:39,387 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 22:23:39,389 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 22:23:39,390 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 22:23:39,393 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 22:23:39,393 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 22:23:39,394 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 22:23:39,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 22:23:39,394 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 22:23:39,395 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 22:23:39,395 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 22:23:39,395 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 22:23:39,396 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 22:23:39,396 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-11-08 22:23:39,396 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 22:23:39,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:23:39,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 22:23:39,397 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 22:23:39,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 22:23:39,398 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-08 22:23:39,401 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 22:23:39,401 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-11-08 22:23:39,401 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_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0898bce60d3b5ee6875cd987db5ed8fbfc9e5f445df6eb1b85df765e321d987 [2024-11-08 22:23:39,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 22:23:39,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 22:23:39,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 22:23:39,888 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 22:23:39,889 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 22:23:39,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_preinc_02_bad.i Unable to find full path for "g++" [2024-11-08 22:23:42,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 22:23:42,648 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 22:23:42,649 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_max_preinc_02_bad.i [2024-11-08 22:23:42,687 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/data/1de47dfd1/7433cad09fed4b0999ad31c905ef21d4/FLAGe9588affc [2024-11-08 22:23:42,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/data/1de47dfd1/7433cad09fed4b0999ad31c905ef21d4 [2024-11-08 22:23:42,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 22:23:42,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 22:23:42,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 22:23:42,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 22:23:42,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 22:23:42,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:23:42" (1/1) ... [2024-11-08 22:23:42,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a9cec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:42, skipping insertion in model container [2024-11-08 22:23:42,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:23:42" (1/1) ... [2024-11-08 22:23:42,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 22:23:43,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:23:44,004 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 22:23:44,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 22:23:44,259 INFO L204 MainTranslator]: Completed translation [2024-11-08 22:23:44,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44 WrapperNode [2024-11-08 22:23:44,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 22:23:44,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 22:23:44,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 22:23:44,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 22:23:44,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,341 INFO L138 Inliner]: procedures = 502, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2024-11-08 22:23:44,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 22:23:44,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 22:23:44,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 22:23:44,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 22:23:44,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 22:23:44,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 22:23:44,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 22:23:44,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 22:23:44,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 22:23:44,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 22:23:44,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 22:23:44,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 22:23:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 22:23:44,505 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 22:23:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 22:23:44,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 22:23:44,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 22:23:44,726 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 22:23:44,729 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 22:23:44,877 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-08 22:23:44,877 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 22:23:44,951 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 22:23:44,953 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 22:23:44,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:23:44 BoogieIcfgContainer [2024-11-08 22:23:44,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 22:23:44,954 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 22:23:44,955 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 22:23:44,964 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 22:23:44,964 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:23:44" (1/1) ... [2024-11-08 22:23:44,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 22:23:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:23:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2024-11-08 22:23:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-08 22:23:45,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-08 22:23:45,045 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:23:45,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 22:23:45,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 22:23:45,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 22:23:45,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-08 22:23:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:23:45,223 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-08 22:23:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 22:23:45,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 22:23:45,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 22:23:45,294 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 22:23:45,296 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2024-11-08 22:23:45,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-08 22:23:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 22:23:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-08 22:23:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-08 22:23:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 22:23:45,331 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 22:23:45,332 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 22:23:45,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 22:23:45,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 22:23:45,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-08 22:23:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:23:45,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:23:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:23:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:23:45,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 22:23:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 22:23:45,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-08 22:23:45,655 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-11-08 22:23:45,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 10:23:45 ImpRootNode [2024-11-08 22:23:45,702 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 22:23:45,703 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 22:23:45,703 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 22:23:45,704 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 22:23:45,705 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:23:44" (3/4) ... [2024-11-08 22:23:45,708 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 22:23:45,710 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 22:23:45,711 INFO L158 Benchmark]: Toolchain (without parser) took 2989.79ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 51.5MB in the beginning and 67.8MB in the end (delta: -16.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2024-11-08 22:23:45,712 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 79.7MB. Free memory was 55.4MB in the beginning and 55.3MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:23:45,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1535.85ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 51.3MB in the beginning and 50.5MB in the end (delta: 793.4kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2024-11-08 22:23:45,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.64ms. Allocated memory is still 100.7MB. Free memory was 50.5MB in the beginning and 47.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 22:23:45,716 INFO L158 Benchmark]: Boogie Preprocessor took 63.54ms. Allocated memory is still 100.7MB. Free memory was 47.6MB in the beginning and 45.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 22:23:45,717 INFO L158 Benchmark]: RCFGBuilder took 546.70ms. Allocated memory is still 100.7MB. Free memory was 45.5MB in the beginning and 58.5MB in the end (delta: -13.0MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2024-11-08 22:23:45,718 INFO L158 Benchmark]: CodeCheck took 747.44ms. Allocated memory is still 100.7MB. Free memory was 58.5MB in the beginning and 68.3MB in the end (delta: -9.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-08 22:23:45,719 INFO L158 Benchmark]: Witness Printer took 7.34ms. Allocated memory is still 100.7MB. Free memory was 68.3MB in the beginning and 67.8MB in the end (delta: 564.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 22:23:45,726 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, 13 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, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 5 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, 5 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 28 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: 1559]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1568. 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); [L1568] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={1:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1568] 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] [L1569] CALL CWE190_Integer_Overflow__int_max_preinc_02_bad() [L1550] int data; [L1551] data = 0 [L1554] data = 0x7fffffff VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1559] ++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 0.38ms. Allocated memory is still 79.7MB. Free memory was 55.4MB in the beginning and 55.3MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1535.85ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 51.3MB in the beginning and 50.5MB in the end (delta: 793.4kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.64ms. Allocated memory is still 100.7MB. Free memory was 50.5MB in the beginning and 47.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.54ms. Allocated memory is still 100.7MB. Free memory was 47.6MB in the beginning and 45.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 546.70ms. Allocated memory is still 100.7MB. Free memory was 45.5MB in the beginning and 58.5MB in the end (delta: -13.0MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * CodeCheck took 747.44ms. Allocated memory is still 100.7MB. Free memory was 58.5MB in the beginning and 68.3MB in the end (delta: -9.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 7.34ms. Allocated memory is still 100.7MB. Free memory was 68.3MB in the beginning and 67.8MB in the end (delta: 564.3kB). 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 22:23:45,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f2f324-fd26-4969-8a52-e3d0ebdea9f9/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