Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.001541/0.001541, allocations: 114.3 kB / 18.94 MB, free: 2.957 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo): time 0.001711/0.001711, allocations: 216 kB / 22.25 MB, free: 5.113 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo): time 1.384/1.384, allocations: 230.6 MB / 256 MB, free: 8.027 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/package.mo): time 3.007/3.007, allocations: 0.5096 GB / 0.8147 GB, free: 17.51 MB / 0.6231 GB " [Timeout remaining time 177] Using package Buildings with version 13.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/package.mo) Using package Modelica with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo) Using package Complex with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo) Using package ModelicaServices with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo) Running command: translateModel(Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|vol.p|vol1.p|vol.T|vol1.T",fileNamePrefix="Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater") translateModel(Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|vol.p|vol1.p|vol.T|vol1.T",fileNamePrefix="Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater") [Timeout 300] "Notification: Buildings requested package Modelica of version 4.0.0. Modelica 4.1.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.002157/0.002157, allocations: 68.94 kB / 1.184 GB, free: 14.32 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3107/0.3129, allocations: 181.4 MB / 1.361 GB, free: 240 kB / 1.045 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater): time 0.02986/0.3427, allocations: 26.93 MB / 1.388 GB, free: 5.199 MB / 1.076 GB Notification: Performance of NFInst.instExpressions: time 0.01031/0.3531, allocations: 7.188 MB / 1.395 GB, free: 13.99 MB / 1.092 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001001/0.3541, allocations: 51.56 kB / 1.395 GB, free: 13.94 MB / 1.092 GB Notification: Performance of NFTyping.typeComponents: time 0.001129/0.3552, allocations: 405.4 kB / 1.395 GB, free: 13.54 MB / 1.092 GB Notification: Performance of NFTyping.typeBindings: time 0.003099/0.3583, allocations: 1.19 MB / 1.396 GB, free: 12.35 MB / 1.092 GB Notification: Performance of NFTyping.typeClassSections: time 0.002476/0.3608, allocations: 0.9956 MB / 1.397 GB, free: 11.36 MB / 1.092 GB Notification: Performance of NFFlatten.flatten: time 0.002835/0.3636, allocations: 2.165 MB / 1.399 GB, free: 9.195 MB / 1.092 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007296/0.3643, allocations: 493.2 kB / 1.4 GB, free: 8.699 MB / 1.092 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001964/0.3663, allocations: 0.8668 MB / 1.401 GB, free: 7.836 MB / 1.092 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0008782/0.3672, allocations: 0.5794 MB / 1.401 GB, free: 7.254 MB / 1.092 GB Notification: Performance of NFPackage.collectConstants: time 0.0001086/0.3673, allocations: 56 kB / 1.401 GB, free: 7.199 MB / 1.092 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001581/0.3689, allocations: 0.8695 MB / 1.402 GB, free: 6.328 MB / 1.092 GB Notification: Performance of NFScalarize.scalarize: time 0.0002052/0.3691, allocations: 179.2 kB / 1.402 GB, free: 6.152 MB / 1.092 GB Notification: Performance of NFVerifyModel.verify: time 0.0004574/0.3695, allocations: 382.2 kB / 1.403 GB, free: 5.777 MB / 1.092 GB Notification: Performance of NFConvertDAE.convert: time 0.001825/0.3713, allocations: 1.261 MB / 1.404 GB, free: 4.512 MB / 1.092 GB Notification: Performance of FrontEnd - DAE generated: time 3.326e-06/0.3713, allocations: 0 / 1.404 GB, free: 4.512 MB / 1.092 GB Notification: Performance of FrontEnd: time 1.062e-06/0.3713, allocations: 0 / 1.404 GB, free: 4.512 MB / 1.092 GB Notification: Performance of Transformations before backend: time 2.555e-05/0.3714, allocations: 0 / 1.404 GB, free: 4.512 MB / 1.092 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 110 * Number of variables: 110 Notification: Performance of Generate backend data structure: time 0.00166/0.373, allocations: 1.014 MB / 1.405 GB, free: 3.465 MB / 1.092 GB Notification: Performance of prepare preOptimizeDAE: time 3.782e-05/0.3731, allocations: 12.03 kB / 1.405 GB, free: 3.453 MB / 1.092 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0003267/0.3734, allocations: 92.41 kB / 1.405 GB, free: 3.363 MB / 1.092 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0013/0.3747, allocations: 0.6813 MB / 1.406 GB, free: 2.652 MB / 1.092 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.473e-05/0.3747, allocations: 32.94 kB / 1.406 GB, free: 2.621 MB / 1.092 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.923e-05/0.3748, allocations: 48 kB / 1.406 GB, free: 2.574 MB / 1.092 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007947/0.3756, allocations: 0.5001 MB / 1.406 GB, free: 2.039 MB / 1.092 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.863e-05/0.3756, allocations: 0 / 1.406 GB, free: 2.039 MB / 1.092 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.496e-05/0.3757, allocations: 20 kB / 1.406 GB, free: 2.02 MB / 1.092 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.33e-05/0.3757, allocations: 16 kB / 1.406 GB, free: 2.004 MB / 1.092 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005291/0.3762, allocations: 315.7 kB / 1.407 GB, free: 1.699 MB / 1.092 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.003055/0.3793, allocations: 2.854 MB / 1.409 GB, free: 14.58 MB / 1.107 GB Notification: Performance of preOpt comSubExp (simulation): time 0.000304/0.3796, allocations: 174.5 kB / 1.41 GB, free: 14.4 MB / 1.107 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001488/0.3797, allocations: 96.83 kB / 1.41 GB, free: 14.3 MB / 1.107 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001716/0.3799, allocations: 35.95 kB / 1.41 GB, free: 14.27 MB / 1.107 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.719e-05/0.3799, allocations: 42.81 kB / 1.41 GB, free: 14.21 MB / 1.107 GB Notification: Performance of pre-optimization done (n=22): time 1.333e-06/0.3799, allocations: 4 kB / 1.41 GB, free: 14.21 MB / 1.107 GB Notification: Performance of matching and sorting (n=22): time 0.0006006/0.3805, allocations: 315.5 kB / 1.41 GB, free: 13.9 MB / 1.107 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.981e-05/0.3806, allocations: 51.41 kB / 1.41 GB, free: 13.84 MB / 1.107 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006336/0.3812, allocations: 0.5265 MB / 1.411 GB, free: 13.3 MB / 1.107 GB Notification: Performance of collectPreVariables (initialization): time 3.207e-05/0.3812, allocations: 29.7 kB / 1.411 GB, free: 13.26 MB / 1.107 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002721/0.3815, allocations: 352.1 kB / 1.411 GB, free: 12.91 MB / 1.107 GB Notification: Performance of collectInitialBindings (initialization): time 8.036e-05/0.3816, allocations: 91.25 kB / 1.411 GB, free: 12.82 MB / 1.107 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001143/0.3817, allocations: 81.64 kB / 1.411 GB, free: 12.73 MB / 1.107 GB Notification: Performance of setup shared object (initialization): time 0.0001687/0.3819, allocations: 366.8 kB / 1.412 GB, free: 12.37 MB / 1.107 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001579/0.382, allocations: 88.81 kB / 1.412 GB, free: 12.28 MB / 1.107 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002675/0.3823, allocations: 238.6 kB / 1.412 GB, free: 11.98 MB / 1.107 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004351/0.3827, allocations: 341.4 kB / 1.412 GB, free: 11.59 MB / 1.107 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.935e-06/0.3827, allocations: 0 / 1.412 GB, free: 11.59 MB / 1.107 GB Notification: Performance of matching and sorting (n=44) (initialization): time 0.0005979/0.3833, allocations: 396.3 kB / 1.413 GB, free: 11.2 MB / 1.107 GB Notification: Performance of prepare postOptimizeDAE: time 1.402e-05/0.3834, allocations: 4 kB / 1.413 GB, free: 11.2 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.965e-06/0.3834, allocations: 7.938 kB / 1.413 GB, free: 11.19 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.297e-05/0.3834, allocations: 12.55 kB / 1.413 GB, free: 11.18 MB / 1.107 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000267/0.3837, allocations: 79.91 kB / 1.413 GB, free: 11.1 MB / 1.107 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.321e-05/0.3837, allocations: 11.94 kB / 1.413 GB, free: 11.09 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003211/0.384, allocations: 43.66 kB / 1.413 GB, free: 11.04 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.147e-05/0.384, allocations: 20 kB / 1.413 GB, free: 11.02 MB / 1.107 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.000319/0.3843, allocations: 252 kB / 1.413 GB, free: 10.77 MB / 1.107 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0002685/0.3846, allocations: 230 kB / 1.413 GB, free: 10.48 MB / 1.107 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0004067/0.385, allocations: 332 kB / 1.413 GB, free: 10.1 MB / 1.107 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.083e-06/0.385, allocations: 4 kB / 1.413 GB, free: 10.1 MB / 1.107 GB Notification: Performance of matching and sorting (n=44) (initialization_lambda0): time 0.0005782/0.3856, allocations: 393.4 kB / 1.414 GB, free: 9.707 MB / 1.107 GB Notification: Performance of prepare postOptimizeDAE: time 9.568e-06/0.3856, allocations: 4 kB / 1.414 GB, free: 9.703 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.992e-06/0.3856, allocations: 8.031 kB / 1.414 GB, free: 9.695 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (initialization): time 9.437e-06/0.3856, allocations: 8 kB / 1.414 GB, free: 9.688 MB / 1.107 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002443/0.3859, allocations: 79.89 kB / 1.414 GB, free: 9.609 MB / 1.107 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.141e-05/0.3859, allocations: 15.88 kB / 1.414 GB, free: 9.594 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002995/0.3862, allocations: 31.83 kB / 1.414 GB, free: 9.562 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.584e-05/0.3862, allocations: 16 kB / 1.414 GB, free: 9.547 MB / 1.107 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 19 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (44): * Single equations (assignments): 44 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0001377/0.3863, allocations: 200.1 kB / 1.414 GB, free: 9.344 MB / 1.107 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001055/0.3864, allocations: 63.67 kB / 1.414 GB, free: 9.281 MB / 1.107 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0004732/0.3869, allocations: 284.9 kB / 1.415 GB, free: 8.996 MB / 1.107 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.933e-06/0.3869, allocations: 3.938 kB / 1.415 GB, free: 8.992 MB / 1.107 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.787e-06/0.3869, allocations: 3.938 kB / 1.415 GB, free: 8.988 MB / 1.107 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0003873/0.3873, allocations: 381.4 kB / 1.415 GB, free: 8.566 MB / 1.107 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001441/0.3888, allocations: 0.9573 MB / 1.416 GB, free: 7.531 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.895e-06/0.3888, allocations: 0 / 1.416 GB, free: 7.531 MB / 1.107 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002122/0.389, allocations: 51.91 kB / 1.416 GB, free: 7.48 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.951e-06/0.389, allocations: 4 kB / 1.416 GB, free: 7.477 MB / 1.107 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.141e-05/0.389, allocations: 12.28 kB / 1.416 GB, free: 7.465 MB / 1.107 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.25e-06/0.389, allocations: 8 kB / 1.416 GB, free: 7.457 MB / 1.107 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.38e-06/0.389, allocations: 7.938 kB / 1.416 GB, free: 7.449 MB / 1.107 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006537/0.3897, allocations: 0.5236 MB / 1.416 GB, free: 6.883 MB / 1.107 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002157/0.3899, allocations: 103.5 kB / 1.417 GB, free: 6.781 MB / 1.107 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.131e-05/0.3899, allocations: 8 kB / 1.417 GB, free: 6.773 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003138/0.3903, allocations: 7.984 kB / 1.417 GB, free: 6.766 MB / 1.107 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 3.765e-05/0.3903, allocations: 27.97 kB / 1.417 GB, free: 6.738 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.892e-05/0.3903, allocations: 19.98 kB / 1.417 GB, free: 6.719 MB / 1.107 GB Notification: Performance of sorting global known variables: time 0.0004819/0.3908, allocations: 411.1 kB / 1.417 GB, free: 6.32 MB / 1.107 GB Notification: Performance of sort global known variables: time 9e-08/0.3908, allocations: 0 / 1.417 GB, free: 6.32 MB / 1.107 GB Notification: Performance of remove unused functions: time 0.0009631/0.3918, allocations: 359.2 kB / 1.417 GB, free: 5.969 MB / 1.107 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 10 * Number of states: 2 (vol.dynBal.U,vol1.dynBal.U) * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (25): * Single equations (assignments): 24 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0004972/0.3923, allocations: 297.2 kB / 1.418 GB, free: 5.672 MB / 1.107 GB Notification: Performance of simCode: created initialization part: time 0.0006262/0.3929, allocations: 390 kB / 1.418 GB, free: 5.293 MB / 1.107 GB Notification: Performance of simCode: created event and clocks part: time 2.665e-06/0.3929, allocations: 3.938 kB / 1.418 GB, free: 5.289 MB / 1.107 GB Notification: Performance of simCode: created simulation system equations: time 0.0001476/0.393, allocations: 96.7 kB / 1.418 GB, free: 5.195 MB / 1.107 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001589/0.3946, allocations: 376.2 kB / 1.418 GB, free: 4.836 MB / 1.107 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001634/0.3963, allocations: 1.107 MB / 1.42 GB, free: 3.676 MB / 1.107 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005174/0.3968, allocations: 0.8981 MB / 1.42 GB, free: 2.75 MB / 1.107 GB Notification: Performance of simCode: alias equations: time 0.0004451/0.3972, allocations: 153.1 kB / 1.421 GB, free: 2.598 MB / 1.107 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001088/0.3973, allocations: 55.42 kB / 1.421 GB, free: 2.543 MB / 1.107 GB Notification: Performance of SimCode: time 3.81e-07/0.3973, allocations: 4 kB / 1.421 GB, free: 2.539 MB / 1.107 GB Notification: Performance of Templates: time 0.02239/0.4197, allocations: 13.29 MB / 1.434 GB, free: 5.418 MB / 1.123 GB " [Timeout remaining time 300] make -j1 -f Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater.makefile [Timeout 300] (rm -f Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater.pipe ; mkfifo Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater.pipe >> ../files/Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater.sim & ./Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater -abortSlowSimulation -alarm=800 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater.pipe 2>&1) [Timeout 800] diffSimulationResults("Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_MixingVolumes_Validation_CoupledVolumesWater.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesWater.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "" [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 8.589106059167534]