Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset.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 0.001768/0.001768, allocations: 99.64 kB / 18.95 MB, free: 2.668 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 0.002058/0.002058, allocations: 213.4 kB / 22.24 MB, free: 5.262 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 1.508/1.508, allocations: 230.6 MB / 256 MB, free: 7.781 MB / 206.1 MB
"
[Timeout remaining time 178]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo): time 3.374/3.374, allocations: 0.4892 GB / 0.7943 GB, free: 35.66 MB / 0.6231 GB
"
[Timeout remaining time 176]
Using package Buildings with version 12.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/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: "" <> buildModelFMU(Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset,fileNamePrefix="Buildings_12_Buildings_Controls_OBC_Utilities_SetPoints_Validation_SupplyReturnTemperatureReset",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset,fileNamePrefix="Buildings_12_Buildings_Controls_OBC_Utilities_SetPoints_Validation_SupplyReturnTemperatureReset",fmuType="me",version="2.0",platforms={"static"}) [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 0.00214/0.00214, allocations: 73.59 kB / 1.153 GB, free: 25.78 MB / 0.9044 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3419/0.3441, allocations: 176.1 MB / 1.325 GB, free: 2.344 MB / 1.014 GB
Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset): time 0.004061/0.3481, allocations: 1.935 MB / 1.327 GB, free: 420 kB / 1.014 GB
Notification: Performance of NFInst.instExpressions: time 0.002972/0.3511, allocations: 1.564 MB / 1.328 GB, free: 14.83 MB / 1.029 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0004305/0.3515, allocations: 15.88 kB / 1.328 GB, free: 14.82 MB / 1.029 GB
Notification: Performance of NFTyping.typeComponents: time 0.0002296/0.3518, allocations: 55.27 kB / 1.329 GB, free: 14.76 MB / 1.029 GB
Notification: Performance of NFTyping.typeBindings: time 0.0004383/0.3522, allocations: 99.08 kB / 1.329 GB, free: 14.66 MB / 1.029 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0009835/0.3532, allocations: 304.9 kB / 1.329 GB, free: 14.37 MB / 1.029 GB
Notification: Performance of NFFlatten.flatten: time 0.0009587/0.3542, allocations: 0.6409 MB / 1.33 GB, free: 13.72 MB / 1.029 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0004848/0.3546, allocations: 246.4 kB / 1.33 GB, free: 13.47 MB / 1.029 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.000315/0.355, allocations: 235.2 kB / 1.33 GB, free: 13.24 MB / 1.029 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0002929/0.3552, allocations: 226.7 kB / 1.33 GB, free: 13.02 MB / 1.029 GB
Notification: Performance of NFPackage.collectConstants: time 9.049e-05/0.3553, allocations: 72 kB / 1.33 GB, free: 12.95 MB / 1.029 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0001677/0.3555, allocations: 91.98 kB / 1.33 GB, free: 12.86 MB / 1.029 GB
Notification: Performance of NFScalarize.scalarize: time 0.0001235/0.3556, allocations: 123.6 kB / 1.331 GB, free: 12.73 MB / 1.029 GB
Notification: Performance of NFVerifyModel.verify: time 0.0002429/0.3559, allocations: 238.9 kB / 1.331 GB, free: 12.5 MB / 1.029 GB
Notification: Performance of NFConvertDAE.convert: time 0.000896/0.3568, allocations: 0.8094 MB / 1.332 GB, free: 11.69 MB / 1.029 GB
Notification: Performance of FrontEnd - DAE generated: time 5.159e-06/0.3568, allocations: 4 kB / 1.332 GB, free: 11.68 MB / 1.029 GB
Notification: Performance of FrontEnd: time 2.044e-06/0.3568, allocations: 4 kB / 1.332 GB, free: 11.68 MB / 1.029 GB
Notification: Performance of Transformations before backend: time 1.422e-05/0.3568, allocations: 0 / 1.332 GB, free: 11.68 MB / 1.029 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 139
 * Number of variables: 139
Notification: Performance of Generate backend data structure: time 0.001328/0.3581, allocations: 0.7486 MB / 1.332 GB, free: 10.89 MB / 1.029 GB
Notification: Performance of prepare preOptimizeDAE: time 4.748e-05/0.3582, allocations: 8.031 kB / 1.332 GB, free: 10.88 MB / 1.029 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001292/0.3583, allocations: 102.7 kB / 1.332 GB, free: 10.77 MB / 1.029 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002592/0.3586, allocations: 68.56 kB / 1.332 GB, free: 10.7 MB / 1.029 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004878/0.359, allocations: 298 kB / 1.333 GB, free: 10.39 MB / 1.029 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.362e-05/0.3591, allocations: 45.69 kB / 1.333 GB, free: 10.34 MB / 1.029 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 9.406e-05/0.3592, allocations: 56.38 kB / 1.333 GB, free: 10.29 MB / 1.029 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009073/0.3601, allocations: 0.5033 MB / 1.333 GB, free: 9.77 MB / 1.029 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.016e-05/0.3601, allocations: 3.938 kB / 1.333 GB, free: 9.766 MB / 1.029 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.097e-05/0.3602, allocations: 23.98 kB / 1.333 GB, free: 9.742 MB / 1.029 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.924e-05/0.3602, allocations: 12 kB / 1.333 GB, free: 9.73 MB / 1.029 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007287/0.3609, allocations: 365 kB / 1.334 GB, free: 9.371 MB / 1.029 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002078/0.363, allocations: 1.26 MB / 1.335 GB, free: 8.062 MB / 1.029 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0005836/0.3636, allocations: 265.4 kB / 1.335 GB, free: 7.785 MB / 1.029 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0004175/0.364, allocations: 173.6 kB / 1.335 GB, free: 7.609 MB / 1.029 GB
Notification: Performance of preOpt evalFunc (simulation): time 3.04e-05/0.364, allocations: 4 kB / 1.335 GB, free: 7.605 MB / 1.029 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004899/0.3645, allocations: 210.7 kB / 1.336 GB, free: 7.379 MB / 1.029 GB
Notification: Performance of pre-optimization done (n=34): time 1.924e-06/0.3645, allocations: 0 / 1.336 GB, free: 7.379 MB / 1.029 GB
Notification: Performance of matching and sorting (n=34): time 0.0008757/0.3654, allocations: 397.3 kB / 1.336 GB, free: 6.988 MB / 1.029 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 6.058e-05/0.3655, allocations: 81.11 kB / 1.336 GB, free: 6.891 MB / 1.029 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004945/0.3659, allocations: 417.6 kB / 1.336 GB, free: 6.477 MB / 1.029 GB
Notification: Performance of collectPreVariables (initialization): time 4.187e-05/0.366, allocations: 33.7 kB / 1.336 GB, free: 6.438 MB / 1.029 GB
Notification: Performance of collectInitialEqns (initialization): time 0.000225/0.3662, allocations: 272.4 kB / 1.337 GB, free: 6.164 MB / 1.029 GB
Notification: Performance of collectInitialBindings (initialization): time 9.669e-05/0.3663, allocations: 111.1 kB / 1.337 GB, free: 6.055 MB / 1.029 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001402/0.3665, allocations: 86.08 kB / 1.337 GB, free: 5.965 MB / 1.029 GB
Notification: Performance of setup shared object (initialization): time 0.0001816/0.3666, allocations: 358.7 kB / 1.337 GB, free: 5.605 MB / 1.029 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003419/0.367, allocations: 166.5 kB / 1.337 GB, free: 5.438 MB / 1.029 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003716/0.3673, allocations: 236.8 kB / 1.338 GB, free: 5.18 MB / 1.029 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.000592/0.3679, allocations: 341.5 kB / 1.338 GB, free: 4.82 MB / 1.029 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.605e-06/0.3679, allocations: 0 / 1.338 GB, free: 4.82 MB / 1.029 GB
Notification: Performance of matching and sorting (n=50) (initialization): time 0.0009392/0.3689, allocations: 0.5057 MB / 1.338 GB, free: 4.297 MB / 1.029 GB
Notification: Performance of prepare postOptimizeDAE: time 4.738e-05/0.3689, allocations: 37.7 kB / 1.338 GB, free: 4.254 MB / 1.029 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.927e-06/0.3689, allocations: 4 kB / 1.338 GB, free: 4.25 MB / 1.029 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.973e-05/0.369, allocations: 4 kB / 1.338 GB, free: 4.246 MB / 1.029 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003277/0.3693, allocations: 79.89 kB / 1.339 GB, free: 4.168 MB / 1.029 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.484e-05/0.3693, allocations: 15.86 kB / 1.339 GB, free: 4.152 MB / 1.029 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003679/0.3697, allocations: 75.77 kB / 1.339 GB, free: 4.078 MB / 1.029 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.833e-05/0.3697, allocations: 20 kB / 1.339 GB, free: 4.059 MB / 1.029 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 8
 * Number of states: 0 ()
 * Number of discrete variables: 4 ($whenCondition1,$whenCondition2,TRoo1.booPul.y,$PRE.TRoo1.booPul.y)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (48):
 * Single equations (assignments): 47
 * Array equations: 0
 * Algorithm blocks: 1
 * 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 0.0002029/0.3699, allocations: 173.7 kB / 1.339 GB, free: 3.879 MB / 1.029 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 6.573e-05/0.37, allocations: 43.7 kB / 1.339 GB, free: 3.836 MB / 1.029 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0006865/0.3707, allocations: 322.7 kB / 1.339 GB, free: 3.512 MB / 1.029 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.861e-06/0.3707, allocations: 7.938 kB / 1.339 GB, free: 3.504 MB / 1.029 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 6.472e-06/0.3707, allocations: 8 kB / 1.339 GB, free: 3.496 MB / 1.029 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.829e-06/0.3707, allocations: 0 / 1.339 GB, free: 3.496 MB / 1.029 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001299/0.372, allocations: 0.8814 MB / 1.34 GB, free: 2.547 MB / 1.029 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.36e-06/0.372, allocations: 4 kB / 1.34 GB, free: 2.543 MB / 1.029 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002431/0.3722, allocations: 63.89 kB / 1.34 GB, free: 2.48 MB / 1.029 GB
Notification: Performance of postOpt tearingSystem (simulation): time 5.971e-06/0.3722, allocations: 8.125 kB / 1.34 GB, free: 2.473 MB / 1.029 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.036e-05/0.3723, allocations: 12 kB / 1.34 GB, free: 2.461 MB / 1.029 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.08e-06/0.3723, allocations: 4 kB / 1.34 GB, free: 2.457 MB / 1.029 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.828e-06/0.3723, allocations: 3.938 kB / 1.34 GB, free: 2.453 MB / 1.029 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.000701/0.373, allocations: 0.5056 MB / 1.341 GB, free: 1.91 MB / 1.029 GB
Notification: Performance of postOpt removeConstants (simulation): time 8.119e-05/0.373, allocations: 51.64 kB / 1.341 GB, free: 1.859 MB / 1.029 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.678e-05/0.3731, allocations: 8 kB / 1.341 GB, free: 1.852 MB / 1.029 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002282/0.3733, allocations: 27.92 kB / 1.341 GB, free: 1.824 MB / 1.029 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 7.205e-05/0.3734, allocations: 39.77 kB / 1.341 GB, free: 1.785 MB / 1.029 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.715e-05/0.3734, allocations: 8 kB / 1.341 GB, free: 1.777 MB / 1.029 GB
Notification: Performance of sorting global known variables: time 0.0003422/0.3738, allocations: 291.2 kB / 1.341 GB, free: 1.496 MB / 1.029 GB
Notification: Performance of sort global known variables: time 1e-07/0.3738, allocations: 0 / 1.341 GB, free: 1.496 MB / 1.029 GB
Notification: Performance of remove unused functions: time 0.0004655/0.3742, allocations: 107.8 kB / 1.341 GB, free: 1.391 MB / 1.029 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 8
 * Number of states: 0 ()
 * Number of discrete variables: 3 ($whenCondition1,$whenCondition2,TRoo1.booPul.y)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (34):
 * Single equations (assignments): 33
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 1
 * 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 0.001109/0.3753, allocations: 1.062 MB / 1.342 GB, free: 292 kB / 1.029 GB
Notification: Performance of simCode: created initialization part: time 0.000798/0.3761, allocations: 389.3 kB / 1.343 GB, free: 15.89 MB / 1.045 GB
Notification: Performance of simCode: created event and clocks part: time 2.585e-06/0.3761, allocations: 0 / 1.343 GB, free: 15.89 MB / 1.045 GB
Notification: Performance of simCode: created simulation system equations: time 0.0002757/0.3764, allocations: 138.1 kB / 1.343 GB, free: 15.75 MB / 1.045 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005897/0.377, allocations: 66.16 kB / 1.343 GB, free: 15.69 MB / 1.045 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005632/0.3826, allocations: 3.901 MB / 1.347 GB, free: 11.59 MB / 1.045 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002662/0.3829, allocations: 220.7 kB / 1.347 GB, free: 11.35 MB / 1.045 GB
Notification: Performance of simCode: alias equations: time 0.0001719/0.3831, allocations: 43.27 kB / 1.347 GB, free: 11.31 MB / 1.045 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002392/0.3833, allocations: 159.4 kB / 1.347 GB, free: 11.15 MB / 1.045 GB
Notification: Performance of SimCode: time 6.62e-07/0.3833, allocations: 0 / 1.347 GB, free: 11.15 MB / 1.045 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.04107/0.4244, allocations: 8.033 MB / 1.355 GB, free: 3.328 MB / 1.045 GB
Notification: Performance of buildModelFMU: Generate platform static: time 11.82/12.24, allocations: 4 kB / 1.355 GB, free: 3.324 MB / 1.045 GB
"
[Timeout remaining time 288]
(rm -f Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset.pipe ; mkfifo Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset.pipe ; head -c 1048576 < Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset.pipe >> ../files/Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset.sim & python3 -m fmpy simulate  --output-file Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset_res.csv --start-time 0 --stop-time 1 --timeout 400 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 Buildings_12_Buildings_Controls_OBC_Utilities_SetPoints_Validation_SupplyReturnTemperatureReset.fmu > Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset.pipe 2>&1) [Timeout 420.0]
diffSimulationResults("Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset_res.csv","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_Controls_OBC_Utilities_SetPoints_Validation_SupplyReturnTemperatureReset.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300]
"Error: Could not read variable heaCur.TOut in file Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset_res.csv.
Warning: Get data of variable heaCur.TOut from file Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset_res.csv failed!
Error: Could not read variable heaCur1.TSetZon in file Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset_res.csv.
Warning: Get data of variable heaCur1.TSetZon from file Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset_res.csv failed!
Error: Could not read variable heaCur1.TSup in file Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset_res.csv.
Warning: Get data of variable heaCur1.TSup from file Buildings_12_Buildings.Controls.OBC.Utilities.SetPoints.Validation.SupplyReturnTemperatureReset_res.csv failed!
"
[Timeout remaining time 300]
Reference file matches
[Calling sys.exit(0), Time elapsed: 19.31774239335209]