./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/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_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/config/KojakReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fce4586b8eef73581e64836a69ff6e42e806935f8b2eeda884def60b5efa303d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 05:24:43,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 05:24:43,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-25 05:24:43,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 05:24:43,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 05:24:43,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 05:24:43,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-25 05:24:43,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-25 05:24:43,941 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 05:24:43,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 05:24:43,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 05:24:43,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 05:24:43,942 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 05:24:43,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 05:24:43,943 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 05:24:43,943 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 05:24:43,943 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 05:24:43,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 05:24:43,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 05:24:43,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 05:24:43,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 05:24:43,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-25 05:24:43,947 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 05:24:43,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 05:24:43,947 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_93fdc99d-047c-4f74-bef3-f179af540a02/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 ! call(reach_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fce4586b8eef73581e64836a69ff6e42e806935f8b2eeda884def60b5efa303d [2024-11-25 05:24:44,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 05:24:44,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 05:24:44,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 05:24:44,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 05:24:44,304 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 05:24:44,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-56.i [2024-11-25 05:24:47,392 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/data/4a227aabf/dd76dffcfa3f40f9bcaa3ba1c3255cb2/FLAGc9a684212 [2024-11-25 05:24:47,780 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 05:24:47,781 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-56.i [2024-11-25 05:24:47,796 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/data/4a227aabf/dd76dffcfa3f40f9bcaa3ba1c3255cb2/FLAGc9a684212 [2024-11-25 05:24:47,828 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/data/4a227aabf/dd76dffcfa3f40f9bcaa3ba1c3255cb2 [2024-11-25 05:24:47,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 05:24:47,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 05:24:47,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 05:24:47,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 05:24:47,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 05:24:47,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:24:47" (1/1) ... [2024-11-25 05:24:47,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1062051d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:47, skipping insertion in model container [2024-11-25 05:24:47,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:24:47" (1/1) ... [2024-11-25 05:24:47,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 05:24:48,118 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-56.i[919,932] [2024-11-25 05:24:48,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 05:24:48,332 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 05:24:48,348 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-56.i[919,932] [2024-11-25 05:24:48,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 05:24:48,475 INFO L204 MainTranslator]: Completed translation [2024-11-25 05:24:48,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48 WrapperNode [2024-11-25 05:24:48,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 05:24:48,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 05:24:48,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 05:24:48,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 05:24:48,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,578 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 284 [2024-11-25 05:24:48,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 05:24:48,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 05:24:48,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 05:24:48,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 05:24:48,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,641 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,643 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 05:24:48,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 05:24:48,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 05:24:48,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 05:24:48,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:24:48" (1/1) ... [2024-11-25 05:24:48,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 05:24:48,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 05:24:48,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 05:24:48,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 05:24:48,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 05:24:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-25 05:24:48,763 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-25 05:24:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 05:24:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 05:24:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 05:24:48,906 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 05:24:48,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 05:24:49,745 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-25 05:24:49,745 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 05:24:50,208 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 05:24:50,208 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-25 05:24:50,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:24:50 BoogieIcfgContainer [2024-11-25 05:24:50,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 05:24:50,210 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 05:24:50,211 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 05:24:50,224 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 05:24:50,224 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:24:50" (1/1) ... [2024-11-25 05:24:50,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 05:24:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 05:24:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 92 states and 146 transitions. [2024-11-25 05:24:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 146 transitions. [2024-11-25 05:24:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-25 05:24:50,339 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 05:24:50,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 05:24:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 05:24:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2024-11-25 05:24:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 05:24:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 89 states and 142 transitions. [2024-11-25 05:24:59,795 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 142 transitions. [2024-11-25 05:24:59,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-25 05:24:59,800 WARN L417 CodeCheckObserver]: This Program is SAFE, Check terminated with 2 iterations. [2024-11-25 05:24:59,810 INFO L726 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2024-11-25 05:24:59,938 INFO L77 FloydHoareUtils]: At program point L184(line 184) the Hoare annotation is: true [2024-11-25 05:24:59,938 INFO L77 FloydHoareUtils]: At program point L151(line 151) the Hoare annotation is: true [2024-11-25 05:24:59,938 INFO L77 FloydHoareUtils]: At program point L184-1(line 184) the Hoare annotation is: true [2024-11-25 05:24:59,938 INFO L77 FloydHoareUtils]: At program point L151-1(line 151) the Hoare annotation is: true [2024-11-25 05:24:59,939 INFO L77 FloydHoareUtils]: At program point L19(line 19) the Hoare annotation is: (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) [2024-11-25 05:24:59,939 INFO L75 FloydHoareUtils]: For program point L19-1(line 19) no Hoare annotation was computed. [2024-11-25 05:24:59,939 INFO L77 FloydHoareUtils]: At program point L19-3(line 19) the Hoare annotation is: true [2024-11-25 05:24:59,939 INFO L77 FloydHoareUtils]: At program point L201(line 201) the Hoare annotation is: true [2024-11-25 05:24:59,939 INFO L77 FloydHoareUtils]: At program point L201-1(line 201) the Hoare annotation is: true [2024-11-25 05:24:59,939 INFO L77 FloydHoareUtils]: At program point L234-2(lines 234 240) the Hoare annotation is: true [2024-11-25 05:24:59,939 INFO L77 FloydHoareUtils]: At program point L218(line 218) the Hoare annotation is: true [2024-11-25 05:24:59,940 INFO L77 FloydHoareUtils]: At program point L185(line 185) the Hoare annotation is: true [2024-11-25 05:24:59,940 INFO L77 FloydHoareUtils]: At program point L218-1(line 218) the Hoare annotation is: true [2024-11-25 05:24:59,940 INFO L77 FloydHoareUtils]: At program point L152(line 152) the Hoare annotation is: true [2024-11-25 05:24:59,940 INFO L77 FloydHoareUtils]: At program point L202(line 202) the Hoare annotation is: true [2024-11-25 05:24:59,940 INFO L77 FloydHoareUtils]: At program point L169(line 169) the Hoare annotation is: true [2024-11-25 05:24:59,940 INFO L77 FloydHoareUtils]: At program point L169-1(line 169) the Hoare annotation is: true [2024-11-25 05:24:59,940 INFO L77 FloydHoareUtils]: At program point L170(line 170) the Hoare annotation is: true [2024-11-25 05:24:59,940 INFO L77 FloydHoareUtils]: At program point L220(line 220) the Hoare annotation is: true [2024-11-25 05:24:59,940 INFO L77 FloydHoareUtils]: At program point L187(line 187) the Hoare annotation is: true [2024-11-25 05:24:59,941 INFO L77 FloydHoareUtils]: At program point L220-1(line 220) the Hoare annotation is: true [2024-11-25 05:24:59,941 INFO L77 FloydHoareUtils]: At program point L154(line 154) the Hoare annotation is: true [2024-11-25 05:24:59,941 INFO L77 FloydHoareUtils]: At program point L187-1(line 187) the Hoare annotation is: true [2024-11-25 05:24:59,941 INFO L77 FloydHoareUtils]: At program point L154-1(line 154) the Hoare annotation is: true [2024-11-25 05:24:59,941 INFO L77 FloydHoareUtils]: At program point L204(line 204) the Hoare annotation is: true [2024-11-25 05:24:59,941 INFO L77 FloydHoareUtils]: At program point L204-1(line 204) the Hoare annotation is: true [2024-11-25 05:24:59,941 INFO L77 FloydHoareUtils]: At program point L188(line 188) the Hoare annotation is: true [2024-11-25 05:24:59,941 INFO L77 FloydHoareUtils]: At program point L155(line 155) the Hoare annotation is: true [2024-11-25 05:24:59,942 INFO L77 FloydHoareUtils]: At program point L205(line 205) the Hoare annotation is: true [2024-11-25 05:24:59,942 INFO L77 FloydHoareUtils]: At program point L172(line 172) the Hoare annotation is: true [2024-11-25 05:24:59,942 INFO L77 FloydHoareUtils]: At program point L172-1(line 172) the Hoare annotation is: true [2024-11-25 05:24:59,942 INFO L77 FloydHoareUtils]: At program point L222(line 222) the Hoare annotation is: true [2024-11-25 05:24:59,942 INFO L77 FloydHoareUtils]: At program point L222-1(line 222) the Hoare annotation is: true [2024-11-25 05:24:59,942 INFO L77 FloydHoareUtils]: At program point L173(line 173) the Hoare annotation is: true [2024-11-25 05:24:59,942 INFO L75 FloydHoareUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2024-11-25 05:24:59,942 INFO L77 FloydHoareUtils]: At program point L223(lines 140 224) the Hoare annotation is: true [2024-11-25 05:24:59,943 INFO L77 FloydHoareUtils]: At program point L190(line 190) the Hoare annotation is: true [2024-11-25 05:24:59,943 INFO L77 FloydHoareUtils]: At program point L157(line 157) the Hoare annotation is: true [2024-11-25 05:24:59,943 INFO L77 FloydHoareUtils]: At program point L190-1(line 190) the Hoare annotation is: true [2024-11-25 05:24:59,943 INFO L77 FloydHoareUtils]: At program point L157-1(line 157) the Hoare annotation is: true [2024-11-25 05:24:59,943 INFO L77 FloydHoareUtils]: At program point L207(line 207) the Hoare annotation is: true [2024-11-25 05:24:59,943 INFO L77 FloydHoareUtils]: At program point L207-1(line 207) the Hoare annotation is: true [2024-11-25 05:24:59,943 INFO L77 FloydHoareUtils]: At program point L191(line 191) the Hoare annotation is: true [2024-11-25 05:24:59,944 INFO L77 FloydHoareUtils]: At program point L158(line 158) the Hoare annotation is: true [2024-11-25 05:24:59,944 INFO L77 FloydHoareUtils]: At program point L208(line 208) the Hoare annotation is: true [2024-11-25 05:24:59,944 INFO L77 FloydHoareUtils]: At program point L175(line 175) the Hoare annotation is: true [2024-11-25 05:24:59,944 INFO L77 FloydHoareUtils]: At program point L142(line 142) the Hoare annotation is: true [2024-11-25 05:24:59,944 INFO L77 FloydHoareUtils]: At program point L175-1(line 175) the Hoare annotation is: true [2024-11-25 05:24:59,944 INFO L77 FloydHoareUtils]: At program point L142-1(line 142) the Hoare annotation is: true [2024-11-25 05:24:59,944 INFO L77 FloydHoareUtils]: At program point L176(line 176) the Hoare annotation is: true [2024-11-25 05:24:59,944 INFO L77 FloydHoareUtils]: At program point L143(line 143) the Hoare annotation is: true [2024-11-25 05:24:59,945 INFO L77 FloydHoareUtils]: At program point L193(line 193) the Hoare annotation is: true [2024-11-25 05:24:59,945 INFO L77 FloydHoareUtils]: At program point L160(line 160) the Hoare annotation is: true [2024-11-25 05:24:59,945 INFO L77 FloydHoareUtils]: At program point L193-1(line 193) the Hoare annotation is: true [2024-11-25 05:24:59,945 INFO L77 FloydHoareUtils]: At program point L160-1(line 160) the Hoare annotation is: true [2024-11-25 05:24:59,945 INFO L77 FloydHoareUtils]: At program point L210(line 210) the Hoare annotation is: true [2024-11-25 05:24:59,945 INFO L77 FloydHoareUtils]: At program point L210-1(line 210) the Hoare annotation is: true [2024-11-25 05:24:59,945 INFO L77 FloydHoareUtils]: At program point L194(line 194) the Hoare annotation is: true [2024-11-25 05:24:59,946 INFO L77 FloydHoareUtils]: At program point L161(line 161) the Hoare annotation is: true [2024-11-25 05:24:59,946 INFO L77 FloydHoareUtils]: At program point L211(line 211) the Hoare annotation is: true [2024-11-25 05:24:59,946 INFO L77 FloydHoareUtils]: At program point L178(line 178) the Hoare annotation is: true [2024-11-25 05:24:59,946 INFO L77 FloydHoareUtils]: At program point L145(line 145) the Hoare annotation is: true [2024-11-25 05:24:59,946 INFO L77 FloydHoareUtils]: At program point L178-1(line 178) the Hoare annotation is: true [2024-11-25 05:24:59,946 INFO L77 FloydHoareUtils]: At program point L145-1(line 145) the Hoare annotation is: true [2024-11-25 05:24:59,946 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2024-11-25 05:24:59,946 INFO L77 FloydHoareUtils]: At program point L179(line 179) the Hoare annotation is: true [2024-11-25 05:24:59,947 INFO L77 FloydHoareUtils]: At program point L146(line 146) the Hoare annotation is: true [2024-11-25 05:24:59,947 INFO L77 FloydHoareUtils]: At program point L196(line 196) the Hoare annotation is: true [2024-11-25 05:24:59,947 INFO L77 FloydHoareUtils]: At program point L163(line 163) the Hoare annotation is: true [2024-11-25 05:24:59,947 INFO L77 FloydHoareUtils]: At program point L196-1(line 196) the Hoare annotation is: true [2024-11-25 05:24:59,947 INFO L77 FloydHoareUtils]: At program point L163-1(line 163) the Hoare annotation is: true [2024-11-25 05:24:59,947 INFO L77 FloydHoareUtils]: At program point L213(line 213) the Hoare annotation is: true [2024-11-25 05:24:59,947 INFO L77 FloydHoareUtils]: At program point L213-1(line 213) the Hoare annotation is: true [2024-11-25 05:24:59,947 INFO L77 FloydHoareUtils]: At program point L197(line 197) the Hoare annotation is: true [2024-11-25 05:24:59,948 INFO L77 FloydHoareUtils]: At program point L164(line 164) the Hoare annotation is: true [2024-11-25 05:24:59,948 INFO L75 FloydHoareUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2024-11-25 05:24:59,948 INFO L77 FloydHoareUtils]: At program point L214(line 214) the Hoare annotation is: true [2024-11-25 05:24:59,948 INFO L77 FloydHoareUtils]: At program point L181(line 181) the Hoare annotation is: true [2024-11-25 05:24:59,948 INFO L77 FloydHoareUtils]: At program point L148(line 148) the Hoare annotation is: true [2024-11-25 05:24:59,948 INFO L77 FloydHoareUtils]: At program point L181-1(line 181) the Hoare annotation is: true [2024-11-25 05:24:59,948 INFO L77 FloydHoareUtils]: At program point L148-1(line 148) the Hoare annotation is: true [2024-11-25 05:24:59,948 INFO L77 FloydHoareUtils]: At program point L182(line 182) the Hoare annotation is: true [2024-11-25 05:24:59,949 INFO L77 FloydHoareUtils]: At program point L149(line 149) the Hoare annotation is: true [2024-11-25 05:24:59,949 INFO L77 FloydHoareUtils]: At program point L199(line 199) the Hoare annotation is: true [2024-11-25 05:24:59,949 INFO L77 FloydHoareUtils]: At program point L166(line 166) the Hoare annotation is: true [2024-11-25 05:24:59,949 INFO L77 FloydHoareUtils]: At program point L199-1(line 199) the Hoare annotation is: true [2024-11-25 05:24:59,949 INFO L77 FloydHoareUtils]: At program point L166-1(line 166) the Hoare annotation is: true [2024-11-25 05:24:59,949 INFO L77 FloydHoareUtils]: At program point L216(line 216) the Hoare annotation is: true [2024-11-25 05:24:59,949 INFO L77 FloydHoareUtils]: At program point L216-1(line 216) the Hoare annotation is: true [2024-11-25 05:24:59,950 INFO L77 FloydHoareUtils]: At program point L167(line 167) the Hoare annotation is: true [2024-11-25 05:24:59,950 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2024-11-25 05:24:59,950 INFO L77 FloydHoareUtils]: At program point assume_abort_if_notEXIT(line 20) the Hoare annotation is: true [2024-11-25 05:24:59,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 05:24:59 ImpRootNode [2024-11-25 05:24:59,971 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 05:24:59,973 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 05:24:59,973 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 05:24:59,973 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 05:24:59,974 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:24:50" (3/4) ... [2024-11-25 05:24:59,976 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-25 05:24:59,980 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-25 05:24:59,992 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-11-25 05:24:59,993 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-25 05:24:59,994 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-25 05:24:59,994 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-25 05:25:00,101 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-25 05:25:00,101 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-25 05:25:00,101 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 05:25:00,102 INFO L158 Benchmark]: Toolchain (without parser) took 12267.74ms. Allocated memory was 142.6MB in the beginning and 520.1MB in the end (delta: 377.5MB). Free memory was 118.9MB in the beginning and 423.2MB in the end (delta: -304.3MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2024-11-25 05:25:00,102 INFO L158 Benchmark]: CDTParser took 0.92ms. Allocated memory is still 142.6MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 05:25:00,103 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.10ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 101.1MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-25 05:25:00,103 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.24ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 94.6MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 05:25:00,103 INFO L158 Benchmark]: Boogie Preprocessor took 87.49ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 91.9MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 05:25:00,104 INFO L158 Benchmark]: RCFGBuilder took 1541.97ms. Allocated memory is still 142.6MB. Free memory was 91.9MB in the beginning and 62.2MB in the end (delta: 29.7MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2024-11-25 05:25:00,104 INFO L158 Benchmark]: CodeCheck took 9761.69ms. Allocated memory was 142.6MB in the beginning and 520.1MB in the end (delta: 377.5MB). Free memory was 62.2MB in the beginning and 431.5MB in the end (delta: -369.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2024-11-25 05:25:00,105 INFO L158 Benchmark]: Witness Printer took 128.76ms. Allocated memory is still 520.1MB. Free memory was 431.5MB in the beginning and 423.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 05:25:00,107 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, 92 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 338 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 138 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 877 GetRequests, 875 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, 1.3s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2862/2862 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (((((((((((((((((((((((((((((((((((((((((((((isInitial == \old(isInitial)) && (var_1_1 == \old(var_1_1))) && (var_1_2 == \old(var_1_2))) && (var_1_3 == \old(var_1_3))) && (var_1_4 == \old(var_1_4))) && (var_1_5 == \old(var_1_5))) && (var_1_6 == \old(var_1_6))) && (var_1_10 == \old(var_1_10))) && (var_1_12 == \old(var_1_12))) && (var_1_13 == \old(var_1_13))) && (var_1_14 == \old(var_1_14))) && (var_1_15 == \old(var_1_15))) && (var_1_16 == \old(var_1_16))) && (var_1_17 == \old(var_1_17))) && (var_1_18 == \old(var_1_18))) && (var_1_19 == \old(var_1_19))) && (var_1_20 == \old(var_1_20))) && (var_1_21 == \old(var_1_21))) && (var_1_22 == \old(var_1_22))) && (var_1_23 == \old(var_1_23))) && (var_1_24 == \old(var_1_24))) && (var_1_25 == \old(var_1_25))) && (var_1_26 == \old(var_1_26))) && (var_1_27 == \old(var_1_27))) && (var_1_28 == \old(var_1_28))) && (var_1_29 == \old(var_1_29))) && (var_1_30 == \old(var_1_30))) && (var_1_31 == \old(var_1_31))) && (var_1_32 == \old(var_1_32))) && (var_1_33 == \old(var_1_33))) && (var_1_34 == \old(var_1_34))) && (var_1_35 == \old(var_1_35))) && (var_1_36 == \old(var_1_36))) && (var_1_37 == \old(var_1_37))) && (var_1_38 == \old(var_1_38))) && (var_1_39 == \old(var_1_39))) && (var_1_40 == \old(var_1_40))) && (var_1_41 == \old(var_1_41))) && (var_1_42 == \old(var_1_42))) && (var_1_43 == \old(var_1_43))) && (var_1_44 == \old(var_1_44))) && (var_1_45 == \old(var_1_45))) && (var_1_46 == \old(var_1_46))) && (var_1_47 == \old(var_1_47))) && (var_1_48 == \old(var_1_48))) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92ms. Allocated memory is still 142.6MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.10ms. Allocated memory is still 142.6MB. Free memory was 118.7MB in the beginning and 101.1MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.24ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 94.6MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.49ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 91.9MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1541.97ms. Allocated memory is still 142.6MB. Free memory was 91.9MB in the beginning and 62.2MB in the end (delta: 29.7MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. * CodeCheck took 9761.69ms. Allocated memory was 142.6MB in the beginning and 520.1MB in the end (delta: 377.5MB). Free memory was 62.2MB in the beginning and 431.5MB in the end (delta: -369.4MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Witness Printer took 128.76ms. Allocated memory is still 520.1MB. Free memory was 431.5MB in the beginning and 423.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2024-11-25 05:25:00,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fdc99d-047c-4f74-bef3-f179af540a02/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: TRUE