./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_multiply_41_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_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/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_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_multiply_41_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/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_ebad6668-3013-44ad-9c09-9d0a054f1c50/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 4761737d1c864680c527da1efdc24c3e2fd5d6a77a87f00b58d8b2880696b1dd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 05:18:51,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 05:18:51,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Default.epf [2024-12-06 05:18:51,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 05:18:51,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 05:18:51,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 05:18:51,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 05:18:51,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 05:18:51,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 05:18:51,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 05:18:51,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 05:18:51,549 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 05:18:51,550 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 05:18:51,550 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 05:18:51,550 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 05:18:51,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 05:18:51,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:18:51,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 05:18:51,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 05:18:51,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 05:18:51,550 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 05:18:51,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 05:18:51,550 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_ebad6668-3013-44ad-9c09-9d0a054f1c50/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 -> 4761737d1c864680c527da1efdc24c3e2fd5d6a77a87f00b58d8b2880696b1dd [2024-12-06 05:18:51,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 05:18:51,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 05:18:51,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 05:18:51,809 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 05:18:51,809 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 05:18:51,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_multiply_41_bad.i [2024-12-06 05:18:54,446 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data/e71fca383/b79755b55bc34260aa14bbb95648b90d/FLAGfe4aecd00 [2024-12-06 05:18:54,745 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 05:18:54,745 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_multiply_41_bad.i [2024-12-06 05:18:54,764 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data/e71fca383/b79755b55bc34260aa14bbb95648b90d/FLAGfe4aecd00 [2024-12-06 05:18:55,026 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data/e71fca383/b79755b55bc34260aa14bbb95648b90d [2024-12-06 05:18:55,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 05:18:55,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 05:18:55,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 05:18:55,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 05:18:55,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 05:18:55,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8af512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55, skipping insertion in model container [2024-12-06 05:18:55,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,075 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 05:18:55,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:18:55,684 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 05:18:55,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:18:55,863 INFO L204 MainTranslator]: Completed translation [2024-12-06 05:18:55,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55 WrapperNode [2024-12-06 05:18:55,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 05:18:55,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 05:18:55,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 05:18:55,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 05:18:55,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,910 INFO L138 Inliner]: procedures = 499, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2024-12-06 05:18:55,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 05:18:55,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 05:18:55,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 05:18:55,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 05:18:55,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,924 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 05:18:55,929 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 05:18:55,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 05:18:55,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 05:18:55,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:18:55" (1/1) ... [2024-12-06 05:18:55,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:18:55,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 05:18:55,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 05:18:55,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 05:18:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-06 05:18:55,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-06 05:18:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 05:18:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 05:18:55,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 05:18:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 05:18:56,083 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 05:18:56,085 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 05:18:56,186 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-12-06 05:18:56,186 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 05:18:56,216 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 05:18:56,216 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-06 05:18:56,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:18:56 BoogieIcfgContainer [2024-12-06 05:18:56,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 05:18:56,217 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 05:18:56,217 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 05:18:56,227 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 05:18:56,227 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:18:56" (1/1) ... [2024-12-06 05:18:56,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 05:18:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:18:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2024-12-06 05:18:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-12-06 05:18:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 05:18:56,285 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:18:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:18:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:18:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:18:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:18:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 16 states and 19 transitions. [2024-12-06 05:18:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-12-06 05:18:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-06 05:18:56,541 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:18:56,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:18:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:18:56,573 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:18:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:18:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:18:56,644 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:18:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:18:56,671 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-12-06 05:18:56,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 05:18:56 ImpRootNode [2024-12-06 05:18:56,692 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 05:18:56,692 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 05:18:56,692 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 05:18:56,692 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 05:18:56,693 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:18:56" (3/4) ... [2024-12-06 05:18:56,694 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-06 05:18:56,695 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 05:18:56,695 INFO L158 Benchmark]: Toolchain (without parser) took 1666.38ms. Allocated memory is still 142.6MB. Free memory was 113.6MB in the beginning and 68.6MB in the end (delta: 45.0MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2024-12-06 05:18:56,696 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:18:56,696 INFO L158 Benchmark]: CACSL2BoogieTranslator took 833.94ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 54.3MB in the end (delta: 59.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-12-06 05:18:56,696 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.98ms. Allocated memory is still 142.6MB. Free memory was 54.3MB in the beginning and 113.5MB in the end (delta: -59.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-12-06 05:18:56,697 INFO L158 Benchmark]: Boogie Preprocessor took 16.86ms. Allocated memory is still 142.6MB. Free memory was 113.5MB in the beginning and 112.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:18:56,697 INFO L158 Benchmark]: RCFGBuilder took 287.95ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 98.1MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 05:18:56,697 INFO L158 Benchmark]: CodeCheck took 474.20ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 68.6MB in the end (delta: 29.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-06 05:18:56,698 INFO L158 Benchmark]: Witness Printer took 2.90ms. Allocated memory is still 142.6MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:18:56,700 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 12 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 58 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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: 1552]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1564, overapproximation of fgets at line 1562. 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); [L1576] 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) [L1576] 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] [L1577] CALL CWE190_Integer_Overflow__int_fgets_multiply_41_bad() [L1558] int data; [L1559] data = 0 [L1561] 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] [L1562] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1564] data = atoi(inputBuffer) [L1571] CALL badSink(data) [L1550] COND TRUE data > 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=1073741824, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] data * 2 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 0.27ms. Allocated memory is still 142.6MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 833.94ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 54.3MB in the end (delta: 59.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.98ms. Allocated memory is still 142.6MB. Free memory was 54.3MB in the beginning and 113.5MB in the end (delta: -59.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.86ms. Allocated memory is still 142.6MB. Free memory was 113.5MB in the beginning and 112.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 287.95ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 98.1MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 474.20ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 68.6MB in the end (delta: 29.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.90ms. Allocated memory is still 142.6MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-06 05:18:56,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/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_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/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_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_multiply_41_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/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_ebad6668-3013-44ad-9c09-9d0a054f1c50/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 4761737d1c864680c527da1efdc24c3e2fd5d6a77a87f00b58d8b2880696b1dd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 05:18:58,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 05:18:58,712 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2024-12-06 05:18:58,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 05:18:58,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 05:18:58,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 05:18:58,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 05:18:58,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 05:18:58,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 05:18:58,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 05:18:58,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 05:18:58,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 05:18:58,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 05:18:58,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 05:18:58,737 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-06 05:18:58,738 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-06 05:18:58,738 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-06 05:18:58,738 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-06 05:18:58,738 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 05:18:58,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 05:18:58,738 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 05:18:58,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 05:18:58,738 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 05:18:58,738 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 05:18:58,739 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 05:18:58,739 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-12-06 05:18:58,739 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-12-06 05:18:58,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 05:18:58,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:18:58,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 05:18:58,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 05:18:58,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 05:18:58,739 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-12-06 05:18:58,740 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-06 05:18:58,740 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-12-06 05:18:58,740 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_ebad6668-3013-44ad-9c09-9d0a054f1c50/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 -> 4761737d1c864680c527da1efdc24c3e2fd5d6a77a87f00b58d8b2880696b1dd [2024-12-06 05:18:58,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 05:18:58,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 05:18:58,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 05:18:58,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 05:18:58,974 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 05:18:58,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_multiply_41_bad.i [2024-12-06 05:19:01,639 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data/2d2a8f802/2b910fa6088c41d3a0136b54750f9102/FLAG131cbd934 [2024-12-06 05:19:01,908 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 05:19:01,908 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_multiply_41_bad.i [2024-12-06 05:19:01,926 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data/2d2a8f802/2b910fa6088c41d3a0136b54750f9102/FLAG131cbd934 [2024-12-06 05:19:02,185 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/data/2d2a8f802/2b910fa6088c41d3a0136b54750f9102 [2024-12-06 05:19:02,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 05:19:02,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 05:19:02,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 05:19:02,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 05:19:02,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 05:19:02,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:19:02" (1/1) ... [2024-12-06 05:19:02,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db167d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:02, skipping insertion in model container [2024-12-06 05:19:02,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:19:02" (1/1) ... [2024-12-06 05:19:02,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 05:19:02,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:19:02,874 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 05:19:02,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:19:03,060 INFO L204 MainTranslator]: Completed translation [2024-12-06 05:19:03,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03 WrapperNode [2024-12-06 05:19:03,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 05:19:03,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 05:19:03,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 05:19:03,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 05:19:03,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,101 INFO L138 Inliner]: procedures = 504, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2024-12-06 05:19:03,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 05:19:03,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 05:19:03,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 05:19:03,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 05:19:03,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,117 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,118 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 05:19:03,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 05:19:03,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 05:19:03,127 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 05:19:03,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:19:03,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 05:19:03,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 05:19:03,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 05:19:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-06 05:19:03,175 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-06 05:19:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-12-06 05:19:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 05:19:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 05:19:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 05:19:03,287 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 05:19:03,289 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 05:19:03,400 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-12-06 05:19:03,400 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 05:19:03,435 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 05:19:03,435 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-06 05:19:03,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:19:03 BoogieIcfgContainer [2024-12-06 05:19:03,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 05:19:03,436 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 05:19:03,436 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 05:19:03,444 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 05:19:03,444 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:19:03" (1/1) ... [2024-12-06 05:19:03,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 05:19:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:19:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2024-12-06 05:19:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-12-06 05:19:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 05:19:03,489 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:19:03,489 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-06 05:19:03,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-06 05:19:03,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-06 05:19:03,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-12-06 05:19:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:19:03,640 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-06 05:19:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:19:03,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-06 05:19:03,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-06 05:19:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:19:03,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-12-06 05:19:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:19:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 16 states and 19 transitions. [2024-12-06 05:19:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-12-06 05:19:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-06 05:19:03,753 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:19:03,753 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-06 05:19:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-06 05:19:03,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-06 05:19:03,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-12-06 05:19:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:19:03,899 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:19:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:19:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:19:03,998 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:19:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:19:04,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-12-06 05:19:04,029 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-12-06 05:19:04,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 05:19:04 ImpRootNode [2024-12-06 05:19:04,053 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 05:19:04,054 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 05:19:04,054 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 05:19:04,054 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 05:19:04,054 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:19:03" (3/4) ... [2024-12-06 05:19:04,057 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-06 05:19:04,057 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 05:19:04,058 INFO L158 Benchmark]: Toolchain (without parser) took 1870.78ms. Allocated memory is still 92.3MB. Free memory was 66.7MB in the beginning and 40.6MB in the end (delta: 26.1MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2024-12-06 05:19:04,059 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:19:04,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 872.50ms. Allocated memory is still 92.3MB. Free memory was 66.5MB in the beginning and 60.6MB in the end (delta: 6.0MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2024-12-06 05:19:04,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.09ms. Allocated memory is still 92.3MB. Free memory was 60.6MB in the beginning and 57.9MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:19:04,060 INFO L158 Benchmark]: Boogie Preprocessor took 23.90ms. Allocated memory is still 92.3MB. Free memory was 57.9MB in the beginning and 56.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:19:04,060 INFO L158 Benchmark]: RCFGBuilder took 309.14ms. Allocated memory is still 92.3MB. Free memory was 56.1MB in the beginning and 40.4MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 05:19:04,060 INFO L158 Benchmark]: CodeCheck took 616.87ms. Allocated memory is still 92.3MB. Free memory was 39.9MB in the beginning and 40.6MB in the end (delta: -708.5kB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2024-12-06 05:19:04,061 INFO L158 Benchmark]: Witness Printer took 3.96ms. Allocated memory is still 92.3MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:19:04,063 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 12 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 64 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 2 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: 1552]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1564, overapproximation of fgets at line 1562. 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); [L1576] 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) [L1576] 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] [L1577] CALL CWE190_Integer_Overflow__int_fgets_multiply_41_bad() [L1558] int data; [L1559] data = 0 [L1561] 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] [L1562] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1564] data = atoi(inputBuffer) [L1571] CALL badSink(data) [L1550] COND TRUE data > 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] data * 2 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 0.28ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 872.50ms. Allocated memory is still 92.3MB. Free memory was 66.5MB in the beginning and 60.6MB in the end (delta: 6.0MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.09ms. Allocated memory is still 92.3MB. Free memory was 60.6MB in the beginning and 57.9MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.90ms. Allocated memory is still 92.3MB. Free memory was 57.9MB in the beginning and 56.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 309.14ms. Allocated memory is still 92.3MB. Free memory was 56.1MB in the beginning and 40.4MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 616.87ms. Allocated memory is still 92.3MB. Free memory was 39.9MB in the beginning and 40.6MB in the end (delta: -708.5kB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Witness Printer took 3.96ms. Allocated memory is still 92.3MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-06 05:19:04,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebad6668-3013-44ad-9c09-9d0a054f1c50/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