Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC.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 0.001368/0.001368, allocations: 111.1 kB / 20.44 MB, free: 1.184 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 0.002373/0.002373, allocations: 209.2 kB / 23.73 MB, free: 4.387 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 1.418/1.418, allocations: 230.6 MB / 257.5 MB, free: 7.742 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo): time 0.2128/0.2128, allocations: 44.94 MB / 358.8 MB, free: 6.039 MB / 286.1 MB " [Timeout remaining time 180] Using package ModelicaTest with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/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(ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC,fileNamePrefix="ModelicaTest_4_0_0_ModelicaTest_Fluid_Dissipation_Verifications_HeatTransfer_HeatExchanger_kc_roundTube_KC",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC,fileNamePrefix="ModelicaTest_4_0_0_ModelicaTest_Fluid_Dissipation_Verifications_HeatTransfer_HeatExchanger_kc_roundTube_KC",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: ModelicaTest 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 0.002115/0.002115, allocations: 75.89 kB / 0.4931 GB, free: 10.48 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3032/0.3053, allocations: 65.47 MB / 0.557 GB, free: 7.332 MB / 398.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC): time 0.003981/0.3093, allocations: 2.516 MB / 0.5595 GB, free: 4.98 MB / 398.1 MB Notification: Performance of NFInst.instExpressions: time 0.002327/0.3116, allocations: 1.351 MB / 0.5608 GB, free: 3.625 MB / 398.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001172/0.3117, allocations: 3.938 kB / 0.5608 GB, free: 3.621 MB / 398.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0003102/0.312, allocations: 103.2 kB / 0.5609 GB, free: 3.52 MB / 398.1 MB Notification: Performance of NFTyping.typeBindings: time 0.000369/0.3124, allocations: 142.9 kB / 0.561 GB, free: 3.379 MB / 398.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0005712/0.313, allocations: 271 kB / 0.5613 GB, free: 3.113 MB / 398.1 MB Notification: Performance of NFFlatten.flatten: time 0.0002995/0.3133, allocations: 270.2 kB / 0.5615 GB, free: 2.848 MB / 398.1 MB Notification: Performance of NFFlatten.resolveConnections: time 6.347e-05/0.3133, allocations: 12.94 kB / 0.5616 GB, free: 2.832 MB / 398.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0001373/0.3135, allocations: 107.3 kB / 0.5617 GB, free: 2.727 MB / 398.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.00018/0.3137, allocations: 119.2 kB / 0.5618 GB, free: 2.609 MB / 398.1 MB Notification: Performance of NFPackage.collectConstants: time 2.426e-05/0.3137, allocations: 12 kB / 0.5618 GB, free: 2.598 MB / 398.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0008044/0.3145, allocations: 447.4 kB / 0.5622 GB, free: 2.16 MB / 398.1 MB Notification: Performance of NFScalarize.scalarize: time 6.683e-05/0.3145, allocations: 43.66 kB / 0.5623 GB, free: 2.117 MB / 398.1 MB Notification: Performance of NFVerifyModel.verify: time 0.000116/0.3147, allocations: 107.2 kB / 0.5624 GB, free: 2.012 MB / 398.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0006432/0.3153, allocations: 0.5289 MB / 0.5629 GB, free: 1.48 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 3.476e-06/0.3153, allocations: 0 / 0.5629 GB, free: 1.48 MB / 398.1 MB Notification: Performance of FrontEnd: time 1.193e-06/0.3153, allocations: 0 / 0.5629 GB, free: 1.48 MB / 398.1 MB Notification: Performance of Transformations before backend: time 5.35e-06/0.3153, allocations: 0 / 0.5629 GB, free: 1.48 MB / 398.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 90 * Number of variables: 90 Notification: Performance of Generate backend data structure: time 0.0007811/0.3161, allocations: 0.5752 MB / 0.5634 GB, free: 0.8711 MB / 398.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.452e-05/0.3161, allocations: 8.031 kB / 0.5634 GB, free: 0.8633 MB / 398.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 7.329e-05/0.3162, allocations: 70.72 kB / 0.5635 GB, free: 0.7852 MB / 398.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 6.385e-05/0.3163, allocations: 40.7 kB / 0.5635 GB, free: 0.7461 MB / 398.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0002542/0.3165, allocations: 190.1 kB / 0.5637 GB, free: 0.5352 MB / 398.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.797e-05/0.3166, allocations: 29.38 kB / 0.5638 GB, free: 0.5078 MB / 398.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 5.334e-05/0.3166, allocations: 39.94 kB / 0.5638 GB, free: 480 kB / 398.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007719/0.3174, allocations: 0.5802 MB / 0.5644 GB, free: 15.76 MB / 414.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.731e-05/0.3174, allocations: 7.938 kB / 0.5644 GB, free: 15.75 MB / 414.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.041e-05/0.3174, allocations: 20 kB / 0.5644 GB, free: 15.73 MB / 414.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.526e-05/0.3174, allocations: 12 kB / 0.5644 GB, free: 15.72 MB / 414.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005561/0.318, allocations: 341 kB / 0.5647 GB, free: 15.39 MB / 414.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002806/0.3208, allocations: 3.984 MB / 0.5686 GB, free: 11.21 MB / 414.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0002748/0.3211, allocations: 90.66 kB / 0.5687 GB, free: 11.11 MB / 414.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001401/0.3212, allocations: 36.83 kB / 0.5687 GB, free: 11.07 MB / 414.1 MB Notification: Performance of preOpt evalFunc (simulation): time 2.449e-05/0.3212, allocations: 0 / 0.5687 GB, free: 11.07 MB / 414.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.555e-05/0.3213, allocations: 38.55 kB / 0.5688 GB, free: 11.02 MB / 414.1 MB Notification: Performance of pre-optimization done (n=7): time 1.022e-06/0.3213, allocations: 3.938 kB / 0.5688 GB, free: 11.02 MB / 414.1 MB Notification: Performance of matching and sorting (n=7): time 0.0005195/0.3218, allocations: 161.4 kB / 0.5689 GB, free: 10.86 MB / 414.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.012e-05/0.3218, allocations: 51.41 kB / 0.569 GB, free: 10.79 MB / 414.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004473/0.3223, allocations: 429.7 kB / 0.5694 GB, free: 10.37 MB / 414.1 MB Notification: Performance of collectPreVariables (initialization): time 2.141e-05/0.3223, allocations: 25.7 kB / 0.5694 GB, free: 10.34 MB / 414.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002019/0.3225, allocations: 259.5 kB / 0.5697 GB, free: 10.08 MB / 414.1 MB Notification: Performance of collectInitialBindings (initialization): time 3.018e-05/0.3225, allocations: 27.78 kB / 0.5697 GB, free: 10.05 MB / 414.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001034/0.3226, allocations: 73.92 kB / 0.5698 GB, free: 9.969 MB / 414.1 MB Notification: Performance of setup shared object (initialization): time 0.0001662/0.3228, allocations: 350.7 kB / 0.5701 GB, free: 9.617 MB / 414.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000165/0.323, allocations: 60.61 kB / 0.5702 GB, free: 9.559 MB / 414.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000328/0.3233, allocations: 262.3 kB / 0.5704 GB, free: 9.199 MB / 414.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.000516/0.3238, allocations: 355.9 kB / 0.5707 GB, free: 8.75 MB / 414.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.336e-06/0.3238, allocations: 3.938 kB / 0.5707 GB, free: 8.746 MB / 414.1 MB Notification: Performance of matching and sorting (n=39) (initialization): time 0.0006452/0.3245, allocations: 353.4 kB / 0.5711 GB, free: 8.395 MB / 414.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.828e-05/0.3245, allocations: 8 kB / 0.5711 GB, free: 8.387 MB / 414.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.089e-05/0.3245, allocations: 8 kB / 0.5711 GB, free: 8.379 MB / 414.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 2.224e-05/0.3245, allocations: 11.94 kB / 0.5711 GB, free: 8.367 MB / 414.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004665/0.325, allocations: 111.8 kB / 0.5712 GB, free: 8.258 MB / 414.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0008384/0.3258, allocations: 1.219 MB / 0.5724 GB, free: 6.992 MB / 414.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002949/0.3261, allocations: 71.61 kB / 0.5725 GB, free: 6.922 MB / 414.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.905e-05/0.3261, allocations: 19.98 kB / 0.5725 GB, free: 6.902 MB / 414.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 33 * Number of states: 0 () * Number of discrete variables: 5 (m_flow_IN_con_4.N,m_flow_IN_con_4.geometry,m_flow_IN_con_1.geometry,m_flow_IN_con_3.geometry,m_flow_IN_con_2.geometry) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (39): * Single equations (assignments): 37 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0001598/0.3263, allocations: 145.7 kB / 0.5726 GB, free: 6.75 MB / 414.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.119e-05/0.3264, allocations: 47.59 kB / 0.5727 GB, free: 6.703 MB / 414.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0004479/0.3268, allocations: 172.9 kB / 0.5728 GB, free: 6.531 MB / 414.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.886e-06/0.3268, allocations: 0 / 0.5728 GB, free: 6.531 MB / 414.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.741e-06/0.3268, allocations: 4 kB / 0.5728 GB, free: 6.527 MB / 414.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.715e-06/0.3268, allocations: 0 / 0.5728 GB, free: 6.527 MB / 414.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0003118/0.3271, allocations: 240.5 kB / 0.5731 GB, free: 6.25 MB / 414.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.783e-06/0.3271, allocations: 0 / 0.5731 GB, free: 6.25 MB / 414.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002841/0.3274, allocations: 55.97 kB / 0.5731 GB, free: 6.195 MB / 414.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 2.745e-06/0.3274, allocations: 0 / 0.5731 GB, free: 6.195 MB / 414.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.287e-05/0.3274, allocations: 8 kB / 0.5731 GB, free: 6.188 MB / 414.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0007583/0.3282, allocations: 1.203 MB / 0.5743 GB, free: 4.938 MB / 414.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.102e-06/0.3282, allocations: 0 / 0.5743 GB, free: 4.938 MB / 414.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.000386/0.3286, allocations: 247.6 kB / 0.5745 GB, free: 4.68 MB / 414.1 MB Notification: Performance of postOpt removeConstants (simulation): time 6.821e-05/0.3287, allocations: 35.75 kB / 0.5746 GB, free: 4.645 MB / 414.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.413e-05/0.3287, allocations: 3.938 kB / 0.5746 GB, free: 4.641 MB / 414.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001846/0.3289, allocations: 16.17 kB / 0.5746 GB, free: 4.625 MB / 414.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.063e-05/0.3289, allocations: 4 kB / 0.5746 GB, free: 4.621 MB / 414.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.336e-06/0.3289, allocations: 0 / 0.5746 GB, free: 4.621 MB / 414.1 MB Notification: Performance of sorting global known variables: time 0.0002883/0.3292, allocations: 279.1 kB / 0.5749 GB, free: 4.348 MB / 414.1 MB Notification: Performance of sort global known variables: time 8e-08/0.3292, allocations: 0 / 0.5749 GB, free: 4.348 MB / 414.1 MB Notification: Performance of remove unused functions: time 0.0005206/0.3297, allocations: 115.9 kB / 0.575 GB, free: 4.234 MB / 414.1 MB 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 (7): * Single equations (assignments): 5 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0009605/0.3307, allocations: 0.8525 MB / 0.5758 GB, free: 3.352 MB / 414.1 MB Notification: Performance of simCode: created initialization part: time 0.0005967/0.3313, allocations: 196.5 kB / 0.576 GB, free: 3.16 MB / 414.1 MB Notification: Performance of simCode: created event and clocks part: time 4.328e-06/0.3313, allocations: 7.938 kB / 0.576 GB, free: 3.152 MB / 414.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0002783/0.3316, allocations: 75.95 kB / 0.5761 GB, free: 3.078 MB / 414.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00042/0.332, allocations: 39.02 kB / 0.5761 GB, free: 3.043 MB / 414.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004505/0.3365, allocations: 3.409 MB / 0.5794 GB, free: 15.35 MB / 430.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001529/0.3367, allocations: 161.2 kB / 0.5796 GB, free: 15.18 MB / 430.1 MB Notification: Performance of simCode: alias equations: time 0.000162/0.3368, allocations: 34.95 kB / 0.5796 GB, free: 15.14 MB / 430.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001522/0.337, allocations: 99.41 kB / 0.5797 GB, free: 15.05 MB / 430.1 MB Notification: Performance of SimCode: time 8.22e-07/0.337, allocations: 0 / 0.5797 GB, free: 15.05 MB / 430.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.04195/0.3789, allocations: 10.82 MB / 0.5903 GB, free: 4.449 MB / 430.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 12.91/13.29, allocations: 7.234 kB / 0.5903 GB, free: 4.445 MB / 430.1 MB " [Timeout remaining time 647] (rm -f ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC.pipe ; mkfifo ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC.pipe ; head -c 1048576 < ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC.pipe >> ../files/ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC_res.mat --tempDir=temp_ModelicaTest_4_0_0_ModelicaTest_Fluid_Dissipation_Verifications_HeatTransfer_HeatExchanger_kc_roundTube_KC_fmu --startTime=0 --stopTime=1.01 --stepSize=0.000201879 --timeout=50 --tolerance=1e-06 ModelicaTest_4_0_0_ModelicaTest_Fluid_Dissipation_Verifications_HeatTransfer_HeatExchanger_kc_roundTube_KC.fmu > ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC.pipe 2>&1) [Timeout 52.5] diffSimulationResults("ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC_res.mat","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.0.0/ModelicaTest/Fluid/Dissipation/Verifications/HeatTransfer/HeatExchanger/kc_roundTube_KC/kc_roundTube_KC.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.HeatExchanger.kc_roundTube_KC.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 16.25041472958401]