./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_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_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3 --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 f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 02:16:31,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 02:16:31,174 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Overflow-64bit-Kojak_Default.epf [2024-11-25 02:16:31,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 02:16:31,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 02:16:31,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 02:16:31,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-25 02:16:31,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-25 02:16:31,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 02:16:31,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 02:16:31,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 02:16:31,217 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 02:16:31,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 02:16:31,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 02:16:31,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 02:16:31,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 02:16:31,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 02:16:31,218 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-25 02:16:31,218 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-25 02:16:31,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 02:16:31,219 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 02:16:31,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 02:16:31,219 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 02:16:31,219 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 02:16:31,219 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 02:16:31,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 02:16:31,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:16:31,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 02:16:31,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 02:16:31,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-25 02:16:31,220 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 02:16:31,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 02:16:31,220 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_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3 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 -> f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc [2024-11-25 02:16:31,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 02:16:31,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 02:16:31,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 02:16:31,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 02:16:31,569 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 02:16:31,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2024-11-25 02:16:34,727 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data/0d279af56/1835ef0bbb004c62b0d1a90afc0f12ec/FLAG6c717eb68 [2024-11-25 02:16:35,188 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 02:16:35,189 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2024-11-25 02:16:35,214 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data/0d279af56/1835ef0bbb004c62b0d1a90afc0f12ec/FLAG6c717eb68 [2024-11-25 02:16:35,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data/0d279af56/1835ef0bbb004c62b0d1a90afc0f12ec [2024-11-25 02:16:35,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 02:16:35,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 02:16:35,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 02:16:35,290 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 02:16:35,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 02:16:35,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:16:35" (1/1) ... [2024-11-25 02:16:35,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e81847c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:35, skipping insertion in model container [2024-11-25 02:16:35,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:16:35" (1/1) ... [2024-11-25 02:16:35,355 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 02:16:36,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:16:36,392 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 02:16:36,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:16:36,673 INFO L204 MainTranslator]: Completed translation [2024-11-25 02:16:36,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36 WrapperNode [2024-11-25 02:16:36,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 02:16:36,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 02:16:36,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 02:16:36,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 02:16:36,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,746 INFO L138 Inliner]: procedures = 498, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2024-11-25 02:16:36,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 02:16:36,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 02:16:36,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 02:16:36,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 02:16:36,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,766 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 02:16:36,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 02:16:36,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 02:16:36,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 02:16:36,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:36" (1/1) ... [2024-11-25 02:16:36,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:16:36,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 02:16:36,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 02:16:36,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 02:16:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-25 02:16:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-25 02:16:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 02:16:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 02:16:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 02:16:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 02:16:37,034 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 02:16:37,036 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 02:16:37,208 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-25 02:16:37,208 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 02:16:37,271 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 02:16:37,271 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-25 02:16:37,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:16:37 BoogieIcfgContainer [2024-11-25 02:16:37,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 02:16:37,272 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 02:16:37,274 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 02:16:37,284 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 02:16:37,285 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:16:37" (1/1) ... [2024-11-25 02:16:37,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 02:16:37,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 02:16:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 23 states and 31 transitions. [2024-11-25 02:16:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2024-11-25 02:16:37,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-25 02:16:37,361 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 02:16:37,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 02:16:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 02:16:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 02:16:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 02:16:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 21 states and 26 transitions. [2024-11-25 02:16:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-11-25 02:16:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-25 02:16:37,575 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 02:16:37,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 02:16:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:16:37,612 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 02:16:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:16:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:16:37,731 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 02:16:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:16:37,777 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-11-25 02:16:37,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 02:16:37 ImpRootNode [2024-11-25 02:16:37,842 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 02:16:37,843 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 02:16:37,844 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 02:16:37,844 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 02:16:37,845 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:16:37" (3/4) ... [2024-11-25 02:16:37,847 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-25 02:16:37,848 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 02:16:37,849 INFO L158 Benchmark]: Toolchain (without parser) took 2560.77ms. Allocated memory was 117.4MB in the beginning and 335.5MB in the end (delta: 218.1MB). Free memory was 90.6MB in the beginning and 304.7MB in the end (delta: -214.1MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-11-25 02:16:37,852 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:16:37,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1384.20ms. Allocated memory is still 117.4MB. Free memory was 90.3MB in the beginning and 80.0MB in the end (delta: 10.3MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2024-11-25 02:16:37,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.11ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 77.3MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 02:16:37,853 INFO L158 Benchmark]: Boogie Preprocessor took 40.26ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 76.7MB in the end (delta: 582.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:16:37,853 INFO L158 Benchmark]: RCFGBuilder took 484.44ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 61.7MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-25 02:16:37,853 INFO L158 Benchmark]: CodeCheck took 570.07ms. Allocated memory was 117.4MB in the beginning and 335.5MB in the end (delta: 218.1MB). Free memory was 61.7MB in the beginning and 304.7MB in the end (delta: -243.1MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2024-11-25 02:16:37,856 INFO L158 Benchmark]: Witness Printer took 4.98ms. Allocated memory is still 335.5MB. Free memory was 304.7MB in the beginning and 304.7MB in the end (delta: 11.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:16:37,858 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, 23 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, 30 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 19 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 76 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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: 1575]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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); [L1588] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1588] 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] [L1589] CALL CWE191_Integer_Underflow__int_fgets_postdec_15_bad() [L1550] int data; [L1551] data = 0 [L1554] case 6: 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] [L1554] case 6: [L1556] 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] [L1554] case 6: [L1559] data = atoi(inputBuffer) [L1573] case 7: [L1575] 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 0.43ms. Allocated memory is still 167.8MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1384.20ms. Allocated memory is still 117.4MB. Free memory was 90.3MB in the beginning and 80.0MB in the end (delta: 10.3MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.11ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 77.3MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.26ms. Allocated memory is still 117.4MB. Free memory was 77.3MB in the beginning and 76.7MB in the end (delta: 582.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 484.44ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 61.7MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 570.07ms. Allocated memory was 117.4MB in the beginning and 335.5MB in the end (delta: 218.1MB). Free memory was 61.7MB in the beginning and 304.7MB in the end (delta: -243.1MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * Witness Printer took 4.98ms. Allocated memory is still 335.5MB. Free memory was 304.7MB in the beginning and 304.7MB in the end (delta: 11.7kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-25 02:16:37,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/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_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3 --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 f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 02:16:40,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 02:16:40,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2024-11-25 02:16:40,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 02:16:40,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-25 02:16:40,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-25 02:16:40,615 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 02:16:40,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 02:16:40,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 02:16:40,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 02:16:40,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 02:16:40,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 02:16:40,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 02:16:40,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 02:16:40,618 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-25 02:16:40,618 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-25 02:16:40,618 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-25 02:16:40,619 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-25 02:16:40,619 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-25 02:16:40,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 02:16:40,620 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 02:16:40,620 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 02:16:40,620 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 02:16:40,620 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 02:16:40,621 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 02:16:40,621 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-11-25 02:16:40,621 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-11-25 02:16:40,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 02:16:40,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:16:40,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 02:16:40,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 02:16:40,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-25 02:16:40,622 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-25 02:16:40,622 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-25 02:16:40,622 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-11-25 02:16:40,623 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_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3 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 -> f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc [2024-11-25 02:16:40,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 02:16:40,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 02:16:40,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 02:16:40,925 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 02:16:40,925 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 02:16:40,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2024-11-25 02:16:44,052 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data/a3acae339/42415e18dffb4d1f81ac4bed55dcbe0a/FLAG6470f5340 [2024-11-25 02:16:44,579 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 02:16:44,580 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2024-11-25 02:16:44,603 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data/a3acae339/42415e18dffb4d1f81ac4bed55dcbe0a/FLAG6470f5340 [2024-11-25 02:16:44,623 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/data/a3acae339/42415e18dffb4d1f81ac4bed55dcbe0a [2024-11-25 02:16:44,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 02:16:44,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 02:16:44,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 02:16:44,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 02:16:44,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 02:16:44,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:16:44" (1/1) ... [2024-11-25 02:16:44,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de68718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:44, skipping insertion in model container [2024-11-25 02:16:44,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:16:44" (1/1) ... [2024-11-25 02:16:44,703 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 02:16:45,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:16:45,899 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 02:16:46,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:16:46,274 INFO L204 MainTranslator]: Completed translation [2024-11-25 02:16:46,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46 WrapperNode [2024-11-25 02:16:46,276 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 02:16:46,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 02:16:46,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 02:16:46,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 02:16:46,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,367 INFO L138 Inliner]: procedures = 503, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2024-11-25 02:16:46,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 02:16:46,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 02:16:46,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 02:16:46,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 02:16:46,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,385 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,401 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 02:16:46,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 02:16:46,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 02:16:46,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 02:16:46,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:16:46,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 02:16:46,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 02:16:46,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 02:16:46,494 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-25 02:16:46,495 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-25 02:16:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-25 02:16:46,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 02:16:46,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 02:16:46,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 02:16:46,709 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 02:16:46,711 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 02:16:46,896 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-25 02:16:46,896 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 02:16:46,967 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 02:16:46,967 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-25 02:16:46,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:16:46 BoogieIcfgContainer [2024-11-25 02:16:46,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 02:16:46,969 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 02:16:46,969 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 02:16:46,980 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 02:16:46,980 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:16:46" (1/1) ... [2024-11-25 02:16:46,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 02:16:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 02:16:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 23 states and 31 transitions. [2024-11-25 02:16:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2024-11-25 02:16:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-25 02:16:47,052 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 02:16:47,053 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-25 02:16:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/cvc4 [2024-11-25 02:16:47,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-25 02:16:47,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-25 02:16:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 02:16:47,251 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-25 02:16:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 02:16:47,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-25 02:16:47,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-25 02:16:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 02:16:47,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-25 02:16:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 02:16:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 21 states and 26 transitions. [2024-11-25 02:16:47,399 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-11-25 02:16:47,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-25 02:16:47,400 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 02:16:47,400 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-25 02:16:47,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/cvc4 [2024-11-25 02:16:47,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-25 02:16:47,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-25 02:16:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:16:47,602 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 02:16:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:16:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:16:47,789 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 02:16:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:16:47,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-25 02:16:47,837 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-11-25 02:16:47,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 02:16:47 ImpRootNode [2024-11-25 02:16:47,876 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 02:16:47,877 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 02:16:47,877 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 02:16:47,878 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 02:16:47,880 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:16:46" (3/4) ... [2024-11-25 02:16:47,882 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-25 02:16:47,883 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 02:16:47,885 INFO L158 Benchmark]: Toolchain (without parser) took 3255.33ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 87.7MB in the beginning and 191.5MB in the end (delta: -103.8MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2024-11-25 02:16:47,886 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:16:47,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1646.60ms. Allocated memory is still 117.4MB. Free memory was 87.7MB in the beginning and 64.8MB in the end (delta: 22.8MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2024-11-25 02:16:47,891 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.50ms. Allocated memory is still 117.4MB. Free memory was 64.8MB in the beginning and 61.7MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:16:47,891 INFO L158 Benchmark]: Boogie Preprocessor took 52.02ms. Allocated memory is still 117.4MB. Free memory was 61.7MB in the beginning and 60.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 02:16:47,892 INFO L158 Benchmark]: RCFGBuilder took 545.74ms. Allocated memory is still 117.4MB. Free memory was 59.8MB in the beginning and 42.6MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 02:16:47,892 INFO L158 Benchmark]: CodeCheck took 908.04ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 42.6MB in the beginning and 191.5MB in the end (delta: -148.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:16:47,892 INFO L158 Benchmark]: Witness Printer took 6.12ms. Allocated memory is still 243.3MB. Free memory was 191.5MB in the beginning and 191.5MB in the end (delta: 52.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:16:47,895 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 19 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 82 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 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: 1575]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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); [L1588] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1588] 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] [L1589] CALL CWE191_Integer_Underflow__int_fgets_postdec_15_bad() [L1550] int data; [L1551] data = 0 [L1554] case 6: 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] [L1554] case 6: [L1556] 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] [L1554] case 6: [L1559] data = atoi(inputBuffer) [L1573] case 7: [L1575] 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 0.27ms. Allocated memory is still 117.4MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1646.60ms. Allocated memory is still 117.4MB. Free memory was 87.7MB in the beginning and 64.8MB in the end (delta: 22.8MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.50ms. Allocated memory is still 117.4MB. Free memory was 64.8MB in the beginning and 61.7MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.02ms. Allocated memory is still 117.4MB. Free memory was 61.7MB in the beginning and 60.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 545.74ms. Allocated memory is still 117.4MB. Free memory was 59.8MB in the beginning and 42.6MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 908.04ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 42.6MB in the beginning and 191.5MB in the end (delta: -148.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.12ms. Allocated memory is still 243.3MB. Free memory was 191.5MB in the beginning and 191.5MB in the end (delta: 52.9kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-25 02:16:47,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08c71430-4633-4e08-84a1-be18766a6010/bin/ukojak-verify-ENZ3QT5qd3/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