./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 23:38:21,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 23:38:21,513 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Default.epf [2024-12-05 23:38:21,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 23:38:21,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 23:38:21,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 23:38:21,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 23:38:21,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 23:38:21,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 23:38:21,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 23:38:21,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 23:38:21,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 23:38:21,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 23:38:21,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 23:38:21,540 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 23:38:21,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 23:38:21,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 23:38:21,540 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-05 23:38:21,540 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-05 23:38:21,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 23:38:21,541 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 23:38:21,541 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 23:38:21,541 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 23:38:21,541 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 23:38:21,541 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 23:38:21,541 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 23:38:21,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:38:21,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 23:38:21,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 23:38:21,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 23:38:21,542 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 23:38:21,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 23:38:21,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 [2024-12-05 23:38:21,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 23:38:21,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 23:38:21,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 23:38:21,791 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 23:38:21,792 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 23:38:21,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2024-12-05 23:38:24,422 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data/db530a424/76315dec53ad41398f8ec13d58e61bb9/FLAGd06e671d8 [2024-12-05 23:38:24,715 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 23:38:24,715 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2024-12-05 23:38:24,733 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data/db530a424/76315dec53ad41398f8ec13d58e61bb9/FLAGd06e671d8 [2024-12-05 23:38:25,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data/db530a424/76315dec53ad41398f8ec13d58e61bb9 [2024-12-05 23:38:25,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 23:38:25,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 23:38:25,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 23:38:25,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 23:38:25,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 23:38:25,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb0f4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25, skipping insertion in model container [2024-12-05 23:38:25,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,046 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 23:38:25,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:38:25,628 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 23:38:25,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:38:25,804 INFO L204 MainTranslator]: Completed translation [2024-12-05 23:38:25,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25 WrapperNode [2024-12-05 23:38:25,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 23:38:25,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 23:38:25,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 23:38:25,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 23:38:25,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,856 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-12-05 23:38:25,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 23:38:25,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 23:38:25,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 23:38:25,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 23:38:25,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,870 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 23:38:25,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 23:38:25,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 23:38:25,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 23:38:25,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:25" (1/1) ... [2024-12-05 23:38:25,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:38:25,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 23:38:25,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 23:38:25,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 23:38:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-05 23:38:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-05 23:38:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 23:38:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 23:38:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 23:38:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 23:38:26,040 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 23:38:26,042 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 23:38:26,137 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-12-05 23:38:26,138 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 23:38:26,171 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 23:38:26,171 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-05 23:38:26,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:38:26 BoogieIcfgContainer [2024-12-05 23:38:26,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 23:38:26,172 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 23:38:26,173 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 23:38:26,181 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 23:38:26,182 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:38:26" (1/1) ... [2024-12-05 23:38:26,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 23:38:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:38:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2024-12-05 23:38:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-12-05 23:38:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-05 23:38:26,239 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:38:26,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:38:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:38:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:38:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:38:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2024-12-05 23:38:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-12-05 23:38:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-05 23:38:26,403 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:38:26,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:38:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:38:26,445 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:38:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:38:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:38:26,515 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:38:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:38:26,539 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-12-05 23:38:26,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 11:38:26 ImpRootNode [2024-12-05 23:38:26,560 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 23:38:26,561 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 23:38:26,561 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 23:38:26,561 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 23:38:26,562 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:38:26" (3/4) ... [2024-12-05 23:38:26,564 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-05 23:38:26,564 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 23:38:26,565 INFO L158 Benchmark]: Toolchain (without parser) took 1559.37ms. Allocated memory is still 142.6MB. Free memory was 113.8MB in the beginning and 73.6MB in the end (delta: 40.3MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2024-12-05 23:38:26,565 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:38:26,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 798.33ms. Allocated memory is still 142.6MB. Free memory was 113.7MB in the beginning and 53.6MB in the end (delta: 60.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-12-05 23:38:26,566 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.70ms. Allocated memory is still 142.6MB. Free memory was 53.6MB in the beginning and 112.9MB in the end (delta: -59.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2024-12-05 23:38:26,566 INFO L158 Benchmark]: Boogie Preprocessor took 18.10ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 111.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:38:26,567 INFO L158 Benchmark]: RCFGBuilder took 296.23ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 97.6MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 23:38:26,567 INFO L158 Benchmark]: CodeCheck took 388.09ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 73.6MB in the end (delta: 24.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 23:38:26,568 INFO L158 Benchmark]: Witness Printer took 3.25ms. Allocated memory is still 142.6MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:38:26,570 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 12 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 53 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 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, ConComCheckerStatistics: No data available - UnprovableResult [Line: 1570]: 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 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); [L1580] 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) [L1580] 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] [L1581] CALL CWE191_Integer_Underflow__int_fgets_postdec_16_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] 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) [L1570] 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 0.32ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 798.33ms. Allocated memory is still 142.6MB. Free memory was 113.7MB in the beginning and 53.6MB in the end (delta: 60.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.70ms. Allocated memory is still 142.6MB. Free memory was 53.6MB in the beginning and 112.9MB in the end (delta: -59.3MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.10ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 111.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.23ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 97.6MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 388.09ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 73.6MB in the end (delta: 24.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.25ms. Allocated memory is still 142.6MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-05 23:38:26,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 23:38:28,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 23:38:28,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2024-12-05 23:38:28,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 23:38:28,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 23:38:28,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 23:38:28,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 23:38:28,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 23:38:28,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 23:38:28,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 23:38:28,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 23:38:28,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 23:38:28,643 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 23:38:28,643 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-12-05 23:38:28,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:38:28,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-12-05 23:38:28,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 [2024-12-05 23:38:28,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 23:38:28,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 23:38:28,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 23:38:28,899 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 23:38:28,899 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 23:38:28,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2024-12-05 23:38:31,584 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data/5f97f5474/2393c8a47cba40ed851853cd94da0760/FLAG5ac65cf7c [2024-12-05 23:38:31,878 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 23:38:31,878 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2024-12-05 23:38:31,898 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data/5f97f5474/2393c8a47cba40ed851853cd94da0760/FLAG5ac65cf7c [2024-12-05 23:38:31,911 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/data/5f97f5474/2393c8a47cba40ed851853cd94da0760 [2024-12-05 23:38:31,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 23:38:31,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 23:38:31,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 23:38:31,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 23:38:31,919 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 23:38:31,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:38:31" (1/1) ... [2024-12-05 23:38:31,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d12e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:31, skipping insertion in model container [2024-12-05 23:38:31,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:38:31" (1/1) ... [2024-12-05 23:38:31,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 23:38:32,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:38:32,573 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 23:38:32,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:38:32,753 INFO L204 MainTranslator]: Completed translation [2024-12-05 23:38:32,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32 WrapperNode [2024-12-05 23:38:32,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 23:38:32,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 23:38:32,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 23:38:32,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 23:38:32,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,794 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-12-05 23:38:32,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 23:38:32,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 23:38:32,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 23:38:32,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 23:38:32,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,811 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 23:38:32,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 23:38:32,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 23:38:32,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 23:38:32,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:38:32" (1/1) ... [2024-12-05 23:38:32,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:38:32,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 23:38:32,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 23:38:32,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 23:38:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-05 23:38:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-05 23:38:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-12-05 23:38:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 23:38:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 23:38:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 23:38:32,982 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 23:38:32,983 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 23:38:33,088 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-12-05 23:38:33,088 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 23:38:33,126 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 23:38:33,126 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-05 23:38:33,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:38:33 BoogieIcfgContainer [2024-12-05 23:38:33,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 23:38:33,127 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 23:38:33,127 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 23:38:33,134 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 23:38:33,134 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:38:33" (1/1) ... [2024-12-05 23:38:33,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 23:38:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:38:33,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2024-12-05 23:38:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-12-05 23:38:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-05 23:38:33,178 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:38:33,179 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:38:33,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:38:33,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:38:33,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-12-05 23:38:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:38:33,280 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:38:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:38:33,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-05 23:38:33,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:38:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:38:33,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-12-05 23:38:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:38:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2024-12-05 23:38:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-12-05 23:38:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-05 23:38:33,354 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:38:33,355 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:38:33,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:38:33,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:38:33,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-12-05 23:38:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:38:33,488 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:38:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:38:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:38:33,574 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:38:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:38:33,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-12-05 23:38:33,606 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-12-05 23:38:33,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 11:38:33 ImpRootNode [2024-12-05 23:38:33,629 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 23:38:33,629 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 23:38:33,629 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 23:38:33,630 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 23:38:33,630 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:38:33" (3/4) ... [2024-12-05 23:38:33,632 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-05 23:38:33,633 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 23:38:33,634 INFO L158 Benchmark]: Toolchain (without parser) took 1719.88ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 45.6MB in the end (delta: 20.3MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2024-12-05 23:38:33,634 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:38:33,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 838.11ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 59.8MB in the end (delta: 5.8MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2024-12-05 23:38:33,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.03ms. Allocated memory is still 92.3MB. Free memory was 59.8MB in the beginning and 57.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:38:33,635 INFO L158 Benchmark]: Boogie Preprocessor took 25.81ms. Allocated memory is still 92.3MB. Free memory was 57.1MB in the beginning and 55.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:38:33,636 INFO L158 Benchmark]: RCFGBuilder took 304.65ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 39.5MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 23:38:33,636 INFO L158 Benchmark]: CodeCheck took 501.70ms. Allocated memory is still 92.3MB. Free memory was 39.5MB in the beginning and 46.1MB in the end (delta: -6.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:38:33,636 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 92.3MB. Free memory was 46.1MB in the beginning and 45.6MB in the end (delta: 536.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:38:33,638 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 12 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - UnprovableResult [Line: 1570]: 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 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); [L1580] 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) [L1580] 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] [L1581] CALL CWE191_Integer_Underflow__int_fgets_postdec_16_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] 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) [L1570] 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 0.30ms. Allocated memory is still 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 838.11ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 59.8MB in the end (delta: 5.8MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.03ms. Allocated memory is still 92.3MB. Free memory was 59.8MB in the beginning and 57.1MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.81ms. Allocated memory is still 92.3MB. Free memory was 57.1MB in the beginning and 55.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 304.65ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 39.5MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 501.70ms. Allocated memory is still 92.3MB. Free memory was 39.5MB in the beginning and 46.1MB in the end (delta: -6.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 92.3MB. Free memory was 46.1MB in the beginning and 45.6MB in the end (delta: 536.4kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-05 23:38:33,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274da5c2-0515-4375-b8ce-5ba9a1f2c68c/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample