Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.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 0.001905/0.001905, allocations: 79.58 kB / 19.18 MB, free: 2.527 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 0.002333/0.002333, allocations: 166.6 kB / 22.46 MB, free: 5.371 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 1.499/1.499, allocations: 177.1 MB / 202.8 MB, free: 9.18 MB / 190.1 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 2.917/2.917, allocations: 389 MB / 0.633 GB, free: 1.012 MB / 0.5919 GB " [Timeout remaining time 176] Using package Buildings with version 13.0.1 (/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.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|actAirSet.uOpeMod|actAirSet.VCooMax_flow|actAirSet.VOccMin_flow|actAirSet.VActCooMax_flow|actAirSet.VActMin_flow|actAirSet.VActHeaMax_flow",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow") translateModel(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|actAirSet.uOpeMod|actAirSet.VCooMax_flow|actAirSet.VOccMin_flow|actAirSet.VActCooMax_flow|actAirSet.VActMin_flow|actAirSet.VActHeaMax_flow",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow") [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 5.25e-06/5.25e-06, allocations: 3.984 kB / 1 GB, free: 7.297 MB / 0.9512 GB Notification: Performance of FrontEnd - Absyn->SCode: time 3.389e-05/3.914e-05, allocations: 10.22 kB / 1 GB, free: 7.285 MB / 0.9512 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow): time 0.002951/0.00299, allocations: 1.084 MB / 1.001 GB, free: 6.207 MB / 0.9512 GB Notification: Performance of NFInst.instExpressions: time 0.001916/0.004906, allocations: 1.046 MB / 1.002 GB, free: 5.148 MB / 0.9512 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001797/0.005086, allocations: 0 / 1.002 GB, free: 5.148 MB / 0.9512 GB Notification: Performance of NFTyping.typeComponents: time 9.666e-05/0.005182, allocations: 23.67 kB / 1.002 GB, free: 5.125 MB / 0.9512 GB Notification: Performance of NFTyping.typeBindings: time 0.0001832/0.005366, allocations: 39.66 kB / 1.002 GB, free: 5.086 MB / 0.9512 GB Notification: Performance of NFTyping.typeClassSections: time 0.0003676/0.005733, allocations: 87.78 kB / 1.002 GB, free: 5 MB / 0.9512 GB Notification: Performance of NFFlatten.flatten: time 0.0003328/0.006066, allocations: 228.2 kB / 1.003 GB, free: 4.773 MB / 0.9512 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002906/0.006357, allocations: 92.66 kB / 1.003 GB, free: 4.688 MB / 0.9512 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0003789/0.006736, allocations: 147.6 kB / 1.003 GB, free: 4.543 MB / 0.9512 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001568/0.006892, allocations: 79.7 kB / 1.003 GB, free: 4.465 MB / 0.9512 GB Notification: Performance of NFPackage.collectConstants: time 5.021e-05/0.006943, allocations: 24 kB / 1.003 GB, free: 4.441 MB / 0.9512 GB Notification: Performance of NFFlatten.collectFunctions: time 7.127e-05/0.007014, allocations: 31.98 kB / 1.003 GB, free: 4.41 MB / 0.9512 GB Notification: Performance of NFScalarize.scalarize: time 5.554e-05/0.007069, allocations: 51.83 kB / 1.003 GB, free: 4.359 MB / 0.9512 GB Notification: Performance of NFVerifyModel.verify: time 8.145e-05/0.007151, allocations: 71.83 kB / 1.003 GB, free: 4.289 MB / 0.9512 GB Notification: Performance of NFConvertDAE.convert: time 0.0004403/0.007591, allocations: 314.9 kB / 1.003 GB, free: 3.98 MB / 0.9512 GB Notification: Performance of FrontEnd - DAE generated: time 4.268e-06/0.007595, allocations: 0 / 1.003 GB, free: 3.98 MB / 0.9512 GB Notification: Performance of FrontEnd: time 1.082e-06/0.007597, allocations: 0 / 1.003 GB, free: 3.98 MB / 0.9512 GB Notification: Performance of Transformations before backend: time 8.365e-06/0.007605, allocations: 0 / 1.003 GB, free: 3.98 MB / 0.9512 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 52 * Number of variables: 52 Notification: Performance of Generate backend data structure: time 0.0009331/0.008538, allocations: 429.8 kB / 1.004 GB, free: 3.527 MB / 0.9512 GB Notification: Performance of prepare preOptimizeDAE: time 4.324e-05/0.008581, allocations: 12.03 kB / 1.004 GB, free: 3.516 MB / 0.9512 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001908/0.008772, allocations: 36.75 kB / 1.004 GB, free: 3.48 MB / 0.9512 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005215/0.009293, allocations: 221.8 kB / 1.004 GB, free: 3.238 MB / 0.9512 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.97e-05/0.009323, allocations: 16.88 kB / 1.004 GB, free: 3.223 MB / 0.9512 GB Notification: Performance of preOpt expandDerOperator (simulation): time 3.741e-05/0.009361, allocations: 20.38 kB / 1.004 GB, free: 3.203 MB / 0.9512 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004578/0.009818, allocations: 196.6 kB / 1.004 GB, free: 3.008 MB / 0.9512 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.339e-05/0.009832, allocations: 4.188 kB / 1.004 GB, free: 3.004 MB / 0.9512 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.481e-05/0.009857, allocations: 8.375 kB / 1.004 GB, free: 2.996 MB / 0.9512 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.909e-06/0.009867, allocations: 8.375 kB / 1.004 GB, free: 2.988 MB / 0.9512 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0004413/0.01031, allocations: 161.8 kB / 1.004 GB, free: 2.828 MB / 0.9512 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0008957/0.0112, allocations: 479.5 kB / 1.005 GB, free: 2.332 MB / 0.9512 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0003961/0.0116, allocations: 150.6 kB / 1.005 GB, free: 2.176 MB / 0.9512 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001841/0.01178, allocations: 60.83 kB / 1.005 GB, free: 2.113 MB / 0.9512 GB Notification: Performance of preOpt evalFunc (simulation): time 2.196e-05/0.01181, allocations: 4 kB / 1.005 GB, free: 2.109 MB / 0.9512 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.525e-05/0.01186, allocations: 38.5 kB / 1.005 GB, free: 2.062 MB / 0.9512 GB Notification: Performance of pre-optimization done (n=17): time 1.372e-06/0.01186, allocations: 0 / 1.005 GB, free: 2.062 MB / 0.9512 GB Notification: Performance of matching and sorting (n=17): time 0.0006903/0.01255, allocations: 215.4 kB / 1.005 GB, free: 1.848 MB / 0.9512 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.659e-05/0.0126, allocations: 51.41 kB / 1.005 GB, free: 1.785 MB / 0.9512 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002001/0.0128, allocations: 186.1 kB / 1.006 GB, free: 1.594 MB / 0.9512 GB Notification: Performance of collectPreVariables (initialization): time 2.912e-05/0.01283, allocations: 29.7 kB / 1.006 GB, free: 1.559 MB / 0.9512 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001173/0.01295, allocations: 144.4 kB / 1.006 GB, free: 1.414 MB / 0.9512 GB Notification: Performance of collectInitialBindings (initialization): time 4.735e-05/0.01299, allocations: 47.72 kB / 1.006 GB, free: 1.367 MB / 0.9512 GB Notification: Performance of simplifyInitialFunctions (initialization): time 8.583e-05/0.01308, allocations: 53.69 kB / 1.006 GB, free: 1.309 MB / 0.9512 GB Notification: Performance of setup shared object (initialization): time 0.0001624/0.01324, allocations: 326.8 kB / 1.006 GB, free: 0.9805 MB / 0.9512 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001782/0.01342, allocations: 55.95 kB / 1.006 GB, free: 0.9258 MB / 0.9512 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002086/0.01363, allocations: 103.5 kB / 1.006 GB, free: 0.8086 MB / 0.9512 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003718/0.014, allocations: 146.8 kB / 1.006 GB, free: 0.6484 MB / 0.9512 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.225e-06/0.014, allocations: 0 / 1.006 GB, free: 0.6484 MB / 0.9512 GB Notification: Performance of matching and sorting (n=22) (initialization): time 0.0004646/0.01447, allocations: 193.4 kB / 1.007 GB, free: 464 kB / 0.9512 GB Notification: Performance of prepare postOptimizeDAE: time 1.8e-05/0.01448, allocations: 4 kB / 1.007 GB, free: 460 kB / 0.9512 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.024e-05/0.01449, allocations: 8 kB / 1.007 GB, free: 452 kB / 0.9512 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.28e-05/0.01452, allocations: 3.938 kB / 1.007 GB, free: 448 kB / 0.9512 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001949/0.01471, allocations: 39.91 kB / 1.007 GB, free: 408 kB / 0.9512 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.224e-05/0.01472, allocations: 4 kB / 1.007 GB, free: 404 kB / 0.9512 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001194/0.01484, allocations: 23.88 kB / 1.007 GB, free: 380 kB / 0.9512 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.516e-05/0.01486, allocations: 8.156 kB / 1.007 GB, free: 372 kB / 0.9512 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 6 * Number of states: 0 () * Number of discrete variables: 15 (reaToInt2.y,actAirSet.or4.y,actAirSet.or2.y,actAirSet.or1.y,actAirSet.ifSetBac.y,actAirSet.ifWarUp.y,actAirSet.ifSetUp.y,actAirSet.ifCooDow.y,actAirSet.ifOcc.y,actAirSet.or3.y,actAirSet.warUpMod.y,actAirSet.setBacMod.y,actAirSet.setUpMod.y,actAirSet.cooDowMod.y,actAirSet.occMod.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (22): * Single equations (assignments): 22 * 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 0.0002103/0.01507, allocations: 146.9 kB / 1.007 GB, free: 216 kB / 0.9512 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.1e-05/0.01511, allocations: 11.91 kB / 1.007 GB, free: 204 kB / 0.9512 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 5.364e-05/0.01516, allocations: 25.73 kB / 1.007 GB, free: 168 kB / 0.9512 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.092e-06/0.01517, allocations: 7.938 kB / 1.007 GB, free: 160 kB / 0.9512 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.32e-06/0.01518, allocations: 0 / 1.007 GB, free: 160 kB / 0.9512 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.457e-06/0.01518, allocations: 0 / 1.007 GB, free: 160 kB / 0.9512 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0002716/0.01545, allocations: 193.1 kB / 1.007 GB, free: 15.93 MB / 0.9669 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.45e-06/0.01546, allocations: 4 kB / 1.007 GB, free: 15.93 MB / 0.9669 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001286/0.01558, allocations: 19.98 kB / 1.007 GB, free: 15.91 MB / 0.9669 GB Notification: Performance of postOpt tearingSystem (simulation): time 3.527e-06/0.01559, allocations: 4 kB / 1.007 GB, free: 15.91 MB / 0.9669 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.495e-05/0.01561, allocations: 7.984 kB / 1.007 GB, free: 15.9 MB / 0.9669 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.873e-06/0.01562, allocations: 0 / 1.007 GB, free: 15.9 MB / 0.9669 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.835e-06/0.01562, allocations: 3.938 kB / 1.007 GB, free: 15.89 MB / 0.9669 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.000464/0.01608, allocations: 257.2 kB / 1.007 GB, free: 15.63 MB / 0.9669 GB Notification: Performance of postOpt removeConstants (simulation): time 2.274e-05/0.0161, allocations: 15.91 kB / 1.007 GB, free: 15.61 MB / 0.9669 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 2.341e-05/0.01613, allocations: 3.984 kB / 1.007 GB, free: 15.61 MB / 0.9669 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001194/0.01625, allocations: 12 kB / 1.007 GB, free: 15.6 MB / 0.9669 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.773e-05/0.01634, allocations: 31.83 kB / 1.007 GB, free: 15.57 MB / 0.9669 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.161e-05/0.01635, allocations: 4 kB / 1.007 GB, free: 15.56 MB / 0.9669 GB Notification: Performance of sorting global known variables: time 0.0001039/0.01645, allocations: 124.2 kB / 1.008 GB, free: 15.44 MB / 0.9669 GB Notification: Performance of sort global known variables: time 1.1e-07/0.01645, allocations: 0 / 1.008 GB, free: 15.44 MB / 0.9669 GB Notification: Performance of remove unused functions: time 0.0002867/0.01674, allocations: 39.89 kB / 1.008 GB, free: 15.4 MB / 0.9669 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 10 (actAirSet.or3.y,actAirSet.ifOcc.y,actAirSet.ifCooDow.y,actAirSet.ifSetUp.y,actAirSet.ifWarUp.y,actAirSet.ifSetBac.y,actAirSet.or1.y,actAirSet.or2.y,actAirSet.or4.y,reaToInt2.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (17): * Single equations (assignments): 17 * 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 0.0001467/0.01688, allocations: 111.1 kB / 1.008 GB, free: 15.29 MB / 0.9669 GB Notification: Performance of simCode: created initialization part: time 0.0004616/0.01735, allocations: 147.8 kB / 1.008 GB, free: 15.14 MB / 0.9669 GB Notification: Performance of simCode: created event and clocks part: time 2.354e-06/0.01735, allocations: 0 / 1.008 GB, free: 15.14 MB / 0.9669 GB Notification: Performance of simCode: created simulation system equations: time 0.0001932/0.01754, allocations: 73.45 kB / 1.008 GB, free: 15.07 MB / 0.9669 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003109/0.01785, allocations: 20 kB / 1.008 GB, free: 15.05 MB / 0.9669 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0007431/0.0186, allocations: 338.6 kB / 1.008 GB, free: 14.7 MB / 0.9669 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001347/0.01873, allocations: 121.2 kB / 1.008 GB, free: 14.55 MB / 0.9669 GB Notification: Performance of simCode: alias equations: time 9.513e-05/0.01883, allocations: 17.48 kB / 1.008 GB, free: 14.54 MB / 0.9669 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 6.729e-05/0.01889, allocations: 24.5 kB / 1.008 GB, free: 14.52 MB / 0.9669 GB Notification: Performance of SimCode: time 5.61e-07/0.01889, allocations: 0 / 1.008 GB, free: 14.52 MB / 0.9669 GB Notification: Performance of Templates: time 0.00536/0.02425, allocations: 1.473 MB / 1.01 GB, free: 13.11 MB / 0.9669 GB " [Timeout remaining time 300] make -j1 -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.makefile [Timeout 300] (rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.sim & ./Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow -abortSlowSimulation -alarm=800 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.pipe 2>&1) [Timeout 800] diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConDischargeSensor_Subsequences_Validation_ActiveAirFlow.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConDischargeSensor.Subsequences.Validation.ActiveAirFlow.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: 8.270765237510204]