Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT.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 0.00127/0.00127, allocations: 95.64 kB / 18.95 MB, free: 2.691 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 0.001425/0.001425, allocations: 213 kB / 22.24 MB, free: 5.242 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: 7.793 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 2.963/2.963, allocations: 0.4892 GB / 0.7943 GB, free: 35.53 MB / 0.6231 GB " [Timeout remaining time 177] 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.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT,fileNamePrefix="Buildings_12_Buildings_HeatTransfer_Windows_BaseClasses_Validation_HeatCapacityVariableShadeDT",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT,fileNamePrefix="Buildings_12_Buildings_HeatTransfer_Windows_BaseClasses_Validation_HeatCapacityVariableShadeDT",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 0.002066/0.002066, allocations: 73.05 kB / 1.153 GB, free: 25.73 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3316/0.3337, allocations: 176.1 MB / 1.325 GB, free: 2.371 MB / 1.014 GB Notification: Performance of NFInst.instantiate(Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT): time 0.003562/0.3372, allocations: 2.168 MB / 1.327 GB, free: 196 kB / 1.014 GB Notification: Performance of NFInst.instExpressions: time 0.001181/0.3384, allocations: 0.7126 MB / 1.328 GB, free: 15.47 MB / 1.029 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001136/0.3385, allocations: 11.94 kB / 1.328 GB, free: 15.46 MB / 1.029 GB Notification: Performance of NFTyping.typeComponents: time 0.0004012/0.3389, allocations: 83.48 kB / 1.328 GB, free: 15.38 MB / 1.029 GB Notification: Performance of NFTyping.typeBindings: time 0.000119/0.339, allocations: 67.41 kB / 1.328 GB, free: 15.31 MB / 1.029 GB Notification: Performance of NFTyping.typeClassSections: time 8.75e-05/0.3391, allocations: 35.95 kB / 1.328 GB, free: 15.28 MB / 1.029 GB Notification: Performance of NFFlatten.flatten: time 0.0002487/0.3394, allocations: 215 kB / 1.328 GB, free: 15.07 MB / 1.029 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0001558/0.3395, allocations: 46.67 kB / 1.328 GB, free: 15.02 MB / 1.029 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000131/0.3397, allocations: 83.66 kB / 1.328 GB, free: 14.93 MB / 1.029 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001286/0.3398, allocations: 79.61 kB / 1.328 GB, free: 14.86 MB / 1.029 GB Notification: Performance of NFPackage.collectConstants: time 2.865e-05/0.3398, allocations: 16 kB / 1.329 GB, free: 14.84 MB / 1.029 GB Notification: Performance of NFFlatten.collectFunctions: time 3.619e-05/0.3398, allocations: 16 kB / 1.329 GB, free: 14.82 MB / 1.029 GB Notification: Performance of NFScalarize.scalarize: time 3.94e-05/0.3399, allocations: 39.78 kB / 1.329 GB, free: 14.79 MB / 1.029 GB Notification: Performance of NFVerifyModel.verify: time 8.112e-05/0.34, allocations: 71.61 kB / 1.329 GB, free: 14.71 MB / 1.029 GB Notification: Performance of NFConvertDAE.convert: time 0.0002635/0.3402, allocations: 191.2 kB / 1.329 GB, free: 14.53 MB / 1.029 GB Notification: Performance of FrontEnd - DAE generated: time 6.342e-06/0.3402, allocations: 0 / 1.329 GB, free: 14.53 MB / 1.029 GB Notification: Performance of FrontEnd: time 4.098e-06/0.3402, allocations: 4 kB / 1.329 GB, free: 14.52 MB / 1.029 GB Notification: Performance of Transformations before backend: time 9.017e-06/0.3403, allocations: 0 / 1.329 GB, free: 14.52 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: 37 * Number of variables: 37 Notification: Performance of Generate backend data structure: time 0.0007351/0.341, allocations: 417.4 kB / 1.329 GB, free: 14.09 MB / 1.029 GB Notification: Performance of prepare preOptimizeDAE: time 3.661e-05/0.341, allocations: 11.97 kB / 1.329 GB, free: 14.07 MB / 1.029 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.591e-05/0.3411, allocations: 50.73 kB / 1.329 GB, free: 14.02 MB / 1.029 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 4.787e-05/0.3411, allocations: 24.8 kB / 1.329 GB, free: 13.99 MB / 1.029 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0003605/0.3415, allocations: 191.7 kB / 1.329 GB, free: 13.78 MB / 1.029 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.808e-05/0.3415, allocations: 12.38 kB / 1.329 GB, free: 13.77 MB / 1.029 GB Notification: Performance of preOpt expandDerOperator (simulation): time 3.184e-05/0.3415, allocations: 20.38 kB / 1.33 GB, free: 13.75 MB / 1.029 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0003002/0.3418, allocations: 153.9 kB / 1.33 GB, free: 13.59 MB / 1.029 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.293e-05/0.3419, allocations: 0 / 1.33 GB, free: 13.59 MB / 1.029 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.672e-05/0.3419, allocations: 8 kB / 1.33 GB, free: 13.59 MB / 1.029 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.753e-06/0.3419, allocations: 4 kB / 1.33 GB, free: 13.58 MB / 1.029 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0002849/0.3422, allocations: 107.9 kB / 1.33 GB, free: 13.48 MB / 1.029 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0006854/0.3428, allocations: 451.2 kB / 1.33 GB, free: 12.99 MB / 1.029 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00041/0.3433, allocations: 150.8 kB / 1.33 GB, free: 12.84 MB / 1.029 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000155/0.3434, allocations: 64.83 kB / 1.33 GB, free: 12.77 MB / 1.029 GB Notification: Performance of preOpt evalFunc (simulation): time 1.554e-05/0.3434, allocations: 7.984 kB / 1.33 GB, free: 12.76 MB / 1.029 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.41e-05/0.3434, allocations: 34.55 kB / 1.33 GB, free: 12.72 MB / 1.029 GB Notification: Performance of pre-optimization done (n=15): time 1.142e-06/0.3435, allocations: 0 / 1.33 GB, free: 12.72 MB / 1.029 GB Notification: Performance of matching and sorting (n=15): time 0.0004966/0.3439, allocations: 191.8 kB / 1.331 GB, free: 12.53 MB / 1.029 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.267e-05/0.344, allocations: 59.34 kB / 1.331 GB, free: 12.46 MB / 1.029 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001442/0.3441, allocations: 155.3 kB / 1.331 GB, free: 12.29 MB / 1.029 GB Notification: Performance of collectPreVariables (initialization): time 1.894e-05/0.3442, allocations: 29.7 kB / 1.331 GB, free: 12.26 MB / 1.029 GB Notification: Performance of collectInitialEqns (initialization): time 8.023e-05/0.3442, allocations: 132.3 kB / 1.331 GB, free: 12.12 MB / 1.029 GB Notification: Performance of collectInitialBindings (initialization): time 5.232e-05/0.3443, allocations: 63.47 kB / 1.331 GB, free: 12.06 MB / 1.029 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.298e-05/0.3443, allocations: 33.7 kB / 1.331 GB, free: 12.02 MB / 1.029 GB Notification: Performance of setup shared object (initialization): time 0.0001379/0.3445, allocations: 326.8 kB / 1.331 GB, free: 11.7 MB / 1.029 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001295/0.3446, allocations: 51.97 kB / 1.331 GB, free: 11.64 MB / 1.029 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001173/0.3447, allocations: 45.69 kB / 1.331 GB, free: 11.6 MB / 1.029 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002475/0.345, allocations: 110.1 kB / 1.332 GB, free: 11.49 MB / 1.029 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.863e-06/0.345, allocations: 3.938 kB / 1.332 GB, free: 11.49 MB / 1.029 GB Notification: Performance of matching and sorting (n=18) (initialization): time 0.0003195/0.3453, allocations: 165.5 kB / 1.332 GB, free: 11.32 MB / 1.029 GB Notification: Performance of prepare postOptimizeDAE: time 1.389e-05/0.3453, allocations: 9.812 kB / 1.332 GB, free: 11.31 MB / 1.029 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.717e-06/0.3453, allocations: 8 kB / 1.332 GB, free: 11.3 MB / 1.029 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.235e-05/0.3453, allocations: 0 / 1.332 GB, free: 11.3 MB / 1.029 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001667/0.3455, allocations: 39.98 kB / 1.332 GB, free: 11.27 MB / 1.029 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.692e-06/0.3455, allocations: 3.984 kB / 1.332 GB, free: 11.26 MB / 1.029 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 8.813e-05/0.3456, allocations: 19.88 kB / 1.332 GB, free: 11.24 MB / 1.029 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.108e-05/0.3456, allocations: 4 kB / 1.332 GB, free: 11.24 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 (18): * Single equations (assignments): 18 * 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 0.0001034/0.3457, allocations: 133.7 kB / 1.332 GB, free: 11.1 MB / 1.029 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 3.229e-05/0.3457, allocations: 7.953 kB / 1.332 GB, free: 11.09 MB / 1.029 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 5.088e-05/0.3458, allocations: 21.45 kB / 1.332 GB, free: 11.06 MB / 1.029 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.597e-06/0.3458, allocations: 8 kB / 1.332 GB, free: 11.05 MB / 1.029 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.767e-06/0.3458, allocations: 0 / 1.332 GB, free: 11.05 MB / 1.029 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.685e-06/0.3458, allocations: 0 / 1.332 GB, free: 11.05 MB / 1.029 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.000254/0.346, allocations: 216.5 kB / 1.332 GB, free: 10.8 MB / 1.029 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.112e-06/0.346, allocations: 0 / 1.332 GB, free: 10.8 MB / 1.029 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001978/0.3462, allocations: 39.97 kB / 1.332 GB, free: 10.76 MB / 1.029 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.904e-06/0.3462, allocations: 0 / 1.332 GB, free: 10.76 MB / 1.029 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.326e-05/0.3463, allocations: 4 kB / 1.332 GB, free: 10.76 MB / 1.029 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.136e-06/0.3463, allocations: 4 kB / 1.332 GB, free: 10.75 MB / 1.029 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.41e-07/0.3463, allocations: 0 / 1.332 GB, free: 10.75 MB / 1.029 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0005091/0.3468, allocations: 319.2 kB / 1.333 GB, free: 10.43 MB / 1.029 GB Notification: Performance of postOpt removeConstants (simulation): time 5.067e-05/0.3468, allocations: 23.88 kB / 1.333 GB, free: 10.4 MB / 1.029 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 2.2e-05/0.3468, allocations: 4 kB / 1.333 GB, free: 10.4 MB / 1.029 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001091/0.347, allocations: 4 kB / 1.333 GB, free: 10.39 MB / 1.029 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.151e-05/0.347, allocations: 15.97 kB / 1.333 GB, free: 10.38 MB / 1.029 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.414e-06/0.347, allocations: 4 kB / 1.333 GB, free: 10.38 MB / 1.029 GB Notification: Performance of sorting global known variables: time 9.292e-05/0.3471, allocations: 120.9 kB / 1.333 GB, free: 10.26 MB / 1.029 GB Notification: Performance of sort global known variables: time 1.01e-07/0.3471, allocations: 0 / 1.333 GB, free: 10.26 MB / 1.029 GB Notification: Performance of remove unused functions: time 0.0002544/0.3474, allocations: 43.89 kB / 1.333 GB, free: 10.21 MB / 1.029 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 3 (heaCapGla.TUns,heaCapGla.TSha,heaCapSha.T) * 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 (15): * Single equations (assignments): 15 * 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 0.0007924/0.3481, allocations: 0.8543 MB / 1.334 GB, free: 9.336 MB / 1.029 GB Notification: Performance of simCode: created initialization part: time 0.0003021/0.3484, allocations: 115.9 kB / 1.334 GB, free: 9.223 MB / 1.029 GB Notification: Performance of simCode: created event and clocks part: time 1.523e-06/0.3484, allocations: 3.938 kB / 1.334 GB, free: 9.219 MB / 1.029 GB Notification: Performance of simCode: created simulation system equations: time 0.0001372/0.3486, allocations: 63.91 kB / 1.334 GB, free: 9.156 MB / 1.029 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003103/0.3489, allocations: 27.98 kB / 1.334 GB, free: 9.129 MB / 1.029 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002607/0.3515, allocations: 2.114 MB / 1.336 GB, free: 6.941 MB / 1.029 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001029/0.3516, allocations: 112.2 kB / 1.336 GB, free: 6.809 MB / 1.029 GB Notification: Performance of simCode: alias equations: time 6.778e-05/0.3517, allocations: 21.47 kB / 1.336 GB, free: 6.789 MB / 1.029 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 8.321e-05/0.3518, allocations: 51.42 kB / 1.336 GB, free: 6.738 MB / 1.029 GB Notification: Performance of SimCode: time 4.31e-07/0.3518, allocations: 3.938 kB / 1.336 GB, free: 6.734 MB / 1.029 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03218/0.3839, allocations: 4.004 MB / 1.34 GB, free: 2.895 MB / 1.029 GB Notification: Performance of buildModelFMU: Generate platform static: time 10.91/11.29, allocations: 1.5 kB / 1.34 GB, free: 2.895 MB / 1.029 GB " [Timeout remaining time 289] (rm -f Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT.pipe ; mkfifo Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT.pipe ; head -c 1048576 < Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT.pipe >> ../files/Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT.sim & python3 -m fmpy simulate --output-file Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv --start-time 0 --stop-time 600 --timeout 400 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.24 Buildings_12_Buildings_HeatTransfer_Windows_BaseClasses_Validation_HeatCapacityVariableShadeDT.fmu > Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT.pipe 2>&1) [Timeout 420.0] diffSimulationResults("Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_HeatTransfer_Windows_BaseClasses_Validation_HeatCapacityVariableShadeDT.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "Error: Could not read variable heaCapGla.portSha.T in file Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv. Warning: Get data of variable heaCapGla.portSha.T from file Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv failed! Error: Could not read variable heaCapGla.portUns.T in file Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv. Warning: Get data of variable heaCapGla.portUns.T from file Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv failed! Error: Could not read variable heaCapGla.portSha.Q_flow in file Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv. Warning: Get data of variable heaCapGla.portSha.Q_flow from file Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv failed! Error: Could not read variable heaCapGla.portUns.Q_flow in file Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv. Warning: Get data of variable heaCapGla.portUns.Q_flow from file Buildings_12_Buildings.HeatTransfer.Windows.BaseClasses.Validation.HeatCapacityVariableShadeDT_res.csv failed! " [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 17.65723938960582]