Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent.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 0.001545/0.001545, allocations: 95.77 kB / 18.94 MB, free: 2.844 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 0.001784/0.001784, allocations: 220.3 kB / 22.25 MB, free: 5.098 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 1.406/1.406, allocations: 230.6 MB / 256 MB, free: 7.824 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 3.266/3.266, allocations: 0.49 GB / 0.7951 GB, free: 35.59 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.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent,fileNamePrefix="Buildings_12_Buildings_Fluid_Geothermal_Borefields_BaseClasses_HeatTransfer_ThermalResponseFactors_Validation_FiniteLineSource_Integrand_Equivalent",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent,fileNamePrefix="Buildings_12_Buildings_Fluid_Geothermal_Borefields_BaseClasses_HeatTransfer_ThermalResponseFactors_Validation_FiniteLineSource_Integrand_Equivalent",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 0.002177/0.002177, allocations: 68.72 kB / 1.154 GB, free: 25.48 MB / 0.9044 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3736/0.3758, allocations: 176.1 MB / 1.326 GB, free: 1.512 MB / 1.014 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent): time 0.002736/0.3785, allocations: 1.387 MB / 1.327 GB, free: 120 kB / 1.014 GB
Notification: Performance of NFInst.instExpressions: time 0.001479/0.38, allocations: 0.7363 MB / 1.328 GB, free: 15.38 MB / 1.029 GB
Notification: Performance of NFInst.updateImplicitVariability: time 2.883e-05/0.38, allocations: 0 / 1.328 GB, free: 15.38 MB / 1.029 GB
Notification: Performance of NFTyping.typeComponents: time 4.737e-05/0.38, allocations: 7.984 kB / 1.328 GB, free: 15.37 MB / 1.029 GB
Notification: Performance of NFTyping.typeBindings: time 0.0001892/0.3802, allocations: 11.88 kB / 1.328 GB, free: 15.36 MB / 1.029 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0005283/0.3808, allocations: 175.5 kB / 1.328 GB, free: 15.18 MB / 1.029 GB
Notification: Performance of NFFlatten.flatten: time 8.236e-05/0.3808, allocations: 35.86 kB / 1.328 GB, free: 15.15 MB / 1.029 GB
Notification: Performance of NFFlatten.resolveConnections: time 6.312e-05/0.3809, allocations: 8.203 kB / 1.328 GB, free: 15.14 MB / 1.029 GB
Notification: Performance of NFEvalConstants.evaluate: time 4.963e-05/0.381, allocations: 23.92 kB / 1.328 GB, free: 15.12 MB / 1.029 GB
Notification: Performance of NFSimplifyModel.simplify: time 6.342e-05/0.381, allocations: 27.91 kB / 1.328 GB, free: 15.09 MB / 1.029 GB
Notification: Performance of NFPackage.collectConstants: time 1.193e-05/0.381, allocations: 0 / 1.328 GB, free: 15.09 MB / 1.029 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0007866/0.3818, allocations: 219.6 kB / 1.328 GB, free: 14.88 MB / 1.029 GB
Notification: Performance of NFScalarize.scalarize: time 5.832e-05/0.3819, allocations: 7.984 kB / 1.328 GB, free: 14.87 MB / 1.029 GB
Notification: Performance of NFVerifyModel.verify: time 3.254e-05/0.3819, allocations: 19.81 kB / 1.329 GB, free: 14.85 MB / 1.029 GB
Notification: Performance of NFConvertDAE.convert: time 0.0002942/0.3822, allocations: 171.4 kB / 1.329 GB, free: 14.68 MB / 1.029 GB
Notification: Performance of FrontEnd - DAE generated: time 4.448e-06/0.3822, allocations: 4 kB / 1.329 GB, free: 14.68 MB / 1.029 GB
Notification: Performance of FrontEnd: time 1.433e-06/0.3822, allocations: 0 / 1.329 GB, free: 14.68 MB / 1.029 GB
Notification: Performance of Transformations before backend: time 5.901e-06/0.3822, allocations: 0 / 1.329 GB, free: 14.68 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: 4
 * Number of variables: 4
Notification: Performance of Generate backend data structure: time 0.0004334/0.3827, allocations: 301.9 kB / 1.329 GB, free: 14.35 MB / 1.029 GB
Notification: Performance of prepare preOptimizeDAE: time 4.841e-05/0.3827, allocations: 12.03 kB / 1.329 GB, free: 14.34 MB / 1.029 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 4.138e-05/0.3827, allocations: 30.75 kB / 1.329 GB, free: 14.3 MB / 1.029 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 3.049e-05/0.3828, allocations: 4.891 kB / 1.329 GB, free: 14.3 MB / 1.029 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0001375/0.3829, allocations: 122.4 kB / 1.329 GB, free: 14.15 MB / 1.029 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.175e-05/0.3829, allocations: 4.375 kB / 1.329 GB, free: 14.15 MB / 1.029 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 1.365e-05/0.3829, allocations: 384 / 1.329 GB, free: 14.15 MB / 1.029 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0001411/0.3831, allocations: 57.75 kB / 1.329 GB, free: 14.09 MB / 1.029 GB
Notification: Performance of preOpt findStateOrder (simulation): time 9.238e-06/0.3831, allocations: 0 / 1.329 GB, free: 14.09 MB / 1.029 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.697e-06/0.3831, allocations: 0 / 1.329 GB, free: 14.09 MB / 1.029 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.268e-06/0.3831, allocations: 0 / 1.329 GB, free: 14.09 MB / 1.029 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 8.167e-05/0.3832, allocations: 39.97 kB / 1.329 GB, free: 14.05 MB / 1.029 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0002042/0.3834, allocations: 148.8 kB / 1.329 GB, free: 13.86 MB / 1.029 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0001034/0.3835, allocations: 50.56 kB / 1.329 GB, free: 13.8 MB / 1.029 GB
Notification: Performance of preOpt resolveLoops (simulation): time 4.825e-05/0.3835, allocations: 24.94 kB / 1.329 GB, free: 13.77 MB / 1.029 GB
Notification: Performance of preOpt evalFunc (simulation): time 4.037e-05/0.3836, allocations: 8 kB / 1.329 GB, free: 13.77 MB / 1.029 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.717e-05/0.3836, allocations: 42.44 kB / 1.329 GB, free: 13.71 MB / 1.029 GB
Notification: Performance of pre-optimization done (n=4): time 2.845e-06/0.3836, allocations: 3.984 kB / 1.329 GB, free: 13.71 MB / 1.029 GB
Notification: Performance of matching and sorting (n=4): time 0.000337/0.384, allocations: 93.61 kB / 1.33 GB, free: 13.61 MB / 1.029 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.896e-05/0.384, allocations: 51.41 kB / 1.33 GB, free: 13.55 MB / 1.029 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001146/0.3841, allocations: 117.8 kB / 1.33 GB, free: 13.43 MB / 1.029 GB
Notification: Performance of collectPreVariables (initialization): time 1.738e-05/0.3841, allocations: 29.7 kB / 1.33 GB, free: 13.39 MB / 1.029 GB
Notification: Performance of collectInitialEqns (initialization): time 4.74e-05/0.3842, allocations: 84.14 kB / 1.33 GB, free: 13.3 MB / 1.029 GB
Notification: Performance of collectInitialBindings (initialization): time 3.315e-05/0.3842, allocations: 15.88 kB / 1.33 GB, free: 13.29 MB / 1.029 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 3.632e-05/0.3842, allocations: 17.72 kB / 1.33 GB, free: 13.27 MB / 1.029 GB
Notification: Performance of setup shared object (initialization): time 0.0001458/0.3844, allocations: 314.8 kB / 1.33 GB, free: 12.95 MB / 1.029 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 4.23e-05/0.3844, allocations: 19.98 kB / 1.33 GB, free: 12.93 MB / 1.029 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 2.982e-05/0.3845, allocations: 19.92 kB / 1.33 GB, free: 12.91 MB / 1.029 GB
Notification: Performance of analyzeInitialSystem (initialization): time 7.133e-05/0.3845, allocations: 40.84 kB / 1.33 GB, free: 12.87 MB / 1.029 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.144e-06/0.3845, allocations: 0 / 1.33 GB, free: 12.87 MB / 1.029 GB
Notification: Performance of matching and sorting (n=4) (initialization): time 0.0001382/0.3847, allocations: 81.56 kB / 1.33 GB, free: 12.78 MB / 1.029 GB
Notification: Performance of prepare postOptimizeDAE: time 1.33e-05/0.3847, allocations: 8 kB / 1.33 GB, free: 12.77 MB / 1.029 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.838e-06/0.3847, allocations: 0 / 1.33 GB, free: 12.77 MB / 1.029 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.886e-05/0.3847, allocations: 4 kB / 1.33 GB, free: 12.77 MB / 1.029 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 6.743e-05/0.3848, allocations: 7.938 kB / 1.33 GB, free: 12.76 MB / 1.029 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.629e-06/0.3848, allocations: 0 / 1.33 GB, free: 12.76 MB / 1.029 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 1.721e-05/0.3848, allocations: 8 kB / 1.33 GB, free: 12.75 MB / 1.029 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.915e-06/0.3848, allocations: 7.938 kB / 1.33 GB, free: 12.75 MB / 1.029 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 1
 * 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 (4):
 * Single equations (assignments): 4
 * 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 8.711e-05/0.3849, allocations: 118.3 kB / 1.33 GB, free: 12.62 MB / 1.029 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 1.541e-05/0.3849, allocations: 11.89 kB / 1.33 GB, free: 12.61 MB / 1.029 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001947/0.3851, allocations: 87.78 kB / 1.331 GB, free: 12.51 MB / 1.029 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.989e-06/0.3851, allocations: 4 kB / 1.331 GB, free: 12.5 MB / 1.029 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 5.05e-06/0.3851, allocations: 7.984 kB / 1.331 GB, free: 12.5 MB / 1.029 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.575e-06/0.3851, allocations: 0 / 1.331 GB, free: 12.5 MB / 1.029 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.000159/0.3853, allocations: 148.7 kB / 1.331 GB, free: 12.31 MB / 1.029 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.052e-06/0.3853, allocations: 0 / 1.331 GB, free: 12.31 MB / 1.029 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 3.122e-05/0.3853, allocations: 7.938 kB / 1.331 GB, free: 12.3 MB / 1.029 GB
Notification: Performance of postOpt tearingSystem (simulation): time 1.473e-06/0.3853, allocations: 4 kB / 1.331 GB, free: 12.3 MB / 1.029 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 8.897e-06/0.3853, allocations: 0 / 1.331 GB, free: 12.3 MB / 1.029 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.06e-06/0.3853, allocations: 3.984 kB / 1.331 GB, free: 12.29 MB / 1.029 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.337e-06/0.3853, allocations: 3.938 kB / 1.331 GB, free: 12.29 MB / 1.029 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0001491/0.3855, allocations: 105.1 kB / 1.331 GB, free: 12.17 MB / 1.029 GB
Notification: Performance of postOpt removeConstants (simulation): time 1.238e-05/0.3855, allocations: 11.89 kB / 1.331 GB, free: 12.16 MB / 1.029 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.229e-05/0.3855, allocations: 0 / 1.331 GB, free: 12.16 MB / 1.029 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 1.245e-05/0.3855, allocations: 0 / 1.331 GB, free: 12.16 MB / 1.029 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 1.888e-05/0.3855, allocations: 4.422 kB / 1.331 GB, free: 12.15 MB / 1.029 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.151e-06/0.3855, allocations: 4 kB / 1.331 GB, free: 12.15 MB / 1.029 GB
Notification: Performance of sorting global known variables: time 6.558e-05/0.3856, allocations: 91.27 kB / 1.331 GB, free: 12.06 MB / 1.029 GB
Notification: Performance of sort global known variables: time 7e-08/0.3856, allocations: 0 / 1.331 GB, free: 12.06 MB / 1.029 GB
Notification: Performance of remove unused functions: time 0.0002658/0.3859, allocations: 55.8 kB / 1.331 GB, free: 12 MB / 1.029 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * 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 simulation (4):
 * Single equations (assignments): 4
 * 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 Backend phase and start with SimCode phase: time 0.0007068/0.3866, allocations: 0.7074 MB / 1.332 GB, free: 11.27 MB / 1.029 GB
Notification: Performance of simCode: created initialization part: time 0.0002109/0.3868, allocations: 47.92 kB / 1.332 GB, free: 11.22 MB / 1.029 GB
Notification: Performance of simCode: created event and clocks part: time 1.136e-05/0.3868, allocations: 0 / 1.332 GB, free: 11.22 MB / 1.029 GB
Notification: Performance of simCode: created simulation system equations: time 0.000131/0.3869, allocations: 23.92 kB / 1.332 GB, free: 11.2 MB / 1.029 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.000275/0.3872, allocations: 22.11 kB / 1.332 GB, free: 11.18 MB / 1.029 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0005101/0.3877, allocations: 187.8 kB / 1.332 GB, free: 10.96 MB / 1.029 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 7.107e-05/0.3878, allocations: 63.34 kB / 1.332 GB, free: 10.88 MB / 1.029 GB
Notification: Performance of simCode: alias equations: time 3.826e-05/0.3878, allocations: 16.22 kB / 1.332 GB, free: 10.86 MB / 1.029 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 4.252e-05/0.3879, allocations: 23.42 kB / 1.332 GB, free: 10.84 MB / 1.029 GB
Notification: Performance of SimCode: time 3e-07/0.3879, allocations: 0 / 1.332 GB, free: 10.84 MB / 1.029 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03237/0.4202, allocations: 3.339 MB / 1.335 GB, free: 7.703 MB / 1.029 GB
Notification: Performance of buildModelFMU: Generate platform static: time 11.23/11.65, allocations: 15.86 kB / 1.335 GB, free: 7.688 MB / 1.029 GB
"
[Timeout remaining time 288]
(rm -f Buildings_12_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent.pipe ; mkfifo Buildings_12_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent.pipe ; head -c 1048576 < Buildings_12_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent.pipe >> ../files/Buildings_12_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_12_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent_res.mat --tempDir=temp_Buildings_12_Buildings_Fluid_Geothermal_Borefields_BaseClasses_HeatTransfer_ThermalResponseFactors_Validation_FiniteLineSource_Integrand_Equivalent_fmu --startTime=0.01 --stopTime=1 --stepSize=0.000396 --timeout=400 --tolerance=1e-06 Buildings_12_Buildings_Fluid_Geothermal_Borefields_BaseClasses_HeatTransfer_ThermalResponseFactors_Validation_FiniteLineSource_Integrand_Equivalent.fmu > Buildings_12_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent.pipe 2>&1) [Timeout 420.0]
diffSimulationResults("Buildings_12_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_Fluid_Geothermal_Borefields_BaseClasses_HeatTransfer_ThermalResponseFactors_Validation_FiniteLineSource_Integrand_Equivalent.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_12_Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.FiniteLineSource_Integrand_Equivalent.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: 18.510888260992942]