Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl.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 0.001842/0.001842, 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 0.002481/0.002481, allocations: 214 kB / 22.25 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 1.448/1.448, allocations: 230.6 MB / 256 MB, free: 7.785 MB / 206.1 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 3.204/3.204, allocations: 0.5107 GB / 0.8158 GB, free: 17.86 MB / 0.6231 GB " [Timeout remaining time 176] Using package Buildings with version 13.0.0 (/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: "" <> buildModelFMU(Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl,fileNamePrefix="Buildings_latest_Buildings_Examples_ChillerPlant_BaseClasses_Controls_Examples_WSEControl",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl,fileNamePrefix="Buildings_latest_Buildings_Examples_ChillerPlant_BaseClasses_Controls_Examples_WSEControl",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 0.002037/0.002037, allocations: 68.69 kB / 1.186 GB, free: 13.79 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.347/0.349, allocations: 181.9 MB / 1.363 GB, free: 14.14 MB / 1.061 GB Notification: Performance of NFInst.instantiate(Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl): time 0.003397/0.3524, allocations: 1.986 MB / 1.365 GB, free: 12.14 MB / 1.061 GB Notification: Performance of NFInst.instExpressions: time 0.001249/0.3537, allocations: 0.6978 MB / 1.366 GB, free: 11.43 MB / 1.061 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001034/0.3538, allocations: 11.88 kB / 1.366 GB, free: 11.42 MB / 1.061 GB Notification: Performance of NFTyping.typeComponents: time 0.0001401/0.3539, allocations: 35.61 kB / 1.366 GB, free: 11.39 MB / 1.061 GB Notification: Performance of NFTyping.typeBindings: time 0.0001022/0.354, allocations: 39.59 kB / 1.366 GB, free: 11.35 MB / 1.061 GB Notification: Performance of NFTyping.typeClassSections: time 0.0004255/0.3544, allocations: 163.7 kB / 1.366 GB, free: 11.19 MB / 1.061 GB Notification: Performance of NFFlatten.flatten: time 0.0004864/0.3549, allocations: 407.3 kB / 1.367 GB, free: 10.79 MB / 1.061 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0003325/0.3553, allocations: 212.5 kB / 1.367 GB, free: 10.57 MB / 1.061 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0001788/0.3554, allocations: 131.6 kB / 1.367 GB, free: 10.45 MB / 1.061 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001856/0.3556, allocations: 135.3 kB / 1.367 GB, free: 10.31 MB / 1.061 GB Notification: Performance of NFPackage.collectConstants: time 5.811e-05/0.3557, allocations: 40 kB / 1.367 GB, free: 10.27 MB / 1.061 GB Notification: Performance of NFFlatten.collectFunctions: time 9.805e-05/0.3558, allocations: 43.94 kB / 1.367 GB, free: 10.23 MB / 1.061 GB Notification: Performance of NFScalarize.scalarize: time 9.139e-05/0.3559, allocations: 83.75 kB / 1.367 GB, free: 10.15 MB / 1.061 GB Notification: Performance of NFVerifyModel.verify: time 0.0001435/0.356, allocations: 123.5 kB / 1.367 GB, free: 10.03 MB / 1.061 GB Notification: Performance of NFConvertDAE.convert: time 0.0004938/0.3565, allocations: 438.4 kB / 1.368 GB, free: 9.598 MB / 1.061 GB Notification: Performance of FrontEnd - DAE generated: time 3.777e-06/0.3565, allocations: 0 / 1.368 GB, free: 9.598 MB / 1.061 GB Notification: Performance of FrontEnd: time 1.853e-06/0.3565, allocations: 0 / 1.368 GB, free: 9.598 MB / 1.061 GB Notification: Performance of Transformations before backend: time 1.065e-05/0.3565, allocations: 0 / 1.368 GB, free: 9.598 MB / 1.061 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 72 * Number of variables: 72 Notification: Performance of Generate backend data structure: time 0.0009559/0.3575, allocations: 0.539 MB / 1.368 GB, free: 9.027 MB / 1.061 GB Notification: Performance of prepare preOptimizeDAE: time 3.793e-05/0.3575, allocations: 12.03 kB / 1.368 GB, free: 9.016 MB / 1.061 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 7.293e-05/0.3576, allocations: 62.72 kB / 1.368 GB, free: 8.945 MB / 1.061 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002541/0.3578, allocations: 40.73 kB / 1.368 GB, free: 8.906 MB / 1.061 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0003801/0.3582, allocations: 214.1 kB / 1.369 GB, free: 8.672 MB / 1.061 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.937e-05/0.3583, allocations: 32.97 kB / 1.369 GB, free: 8.641 MB / 1.061 GB Notification: Performance of preOpt expandDerOperator (simulation): time 5.841e-05/0.3583, allocations: 36.38 kB / 1.369 GB, free: 8.605 MB / 1.061 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.000681/0.359, allocations: 329.2 kB / 1.369 GB, free: 8.27 MB / 1.061 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.204e-05/0.359, allocations: 0 / 1.369 GB, free: 8.27 MB / 1.061 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.33e-05/0.3591, allocations: 15.98 kB / 1.369 GB, free: 8.254 MB / 1.061 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.345e-05/0.3591, allocations: 8 kB / 1.369 GB, free: 8.246 MB / 1.061 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005916/0.3597, allocations: 246.4 kB / 1.369 GB, free: 8.008 MB / 1.061 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.00147/0.3611, allocations: 0.8276 MB / 1.37 GB, free: 7.129 MB / 1.061 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0006488/0.3618, allocations: 247 kB / 1.37 GB, free: 6.879 MB / 1.061 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002567/0.362, allocations: 100.8 kB / 1.37 GB, free: 6.777 MB / 1.061 GB Notification: Performance of preOpt evalFunc (simulation): time 2.221e-05/0.3621, allocations: 7.938 kB / 1.37 GB, free: 6.77 MB / 1.061 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004028/0.3625, allocations: 183.3 kB / 1.371 GB, free: 6.578 MB / 1.061 GB Notification: Performance of pre-optimization done (n=32): time 1.833e-06/0.3625, allocations: 0 / 1.371 GB, free: 6.578 MB / 1.061 GB Notification: Performance of matching and sorting (n=32): time 0.0008472/0.3633, allocations: 354.7 kB / 1.371 GB, free: 6.227 MB / 1.061 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.265e-05/0.3634, allocations: 59.41 kB / 1.371 GB, free: 6.156 MB / 1.061 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002082/0.3636, allocations: 207.4 kB / 1.371 GB, free: 5.938 MB / 1.061 GB Notification: Performance of collectPreVariables (initialization): time 5.355e-05/0.3636, allocations: 45.64 kB / 1.371 GB, free: 5.887 MB / 1.061 GB Notification: Performance of collectInitialEqns (initialization): time 0.000121/0.3638, allocations: 152.8 kB / 1.371 GB, free: 5.734 MB / 1.061 GB Notification: Performance of collectInitialBindings (initialization): time 8.862e-05/0.3638, allocations: 91.31 kB / 1.371 GB, free: 5.645 MB / 1.061 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001341/0.364, allocations: 82.12 kB / 1.372 GB, free: 5.559 MB / 1.061 GB Notification: Performance of setup shared object (initialization): time 0.0001657/0.3641, allocations: 338.8 kB / 1.372 GB, free: 5.219 MB / 1.061 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003041/0.3644, allocations: 138.5 kB / 1.372 GB, free: 5.078 MB / 1.061 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003312/0.3648, allocations: 195.2 kB / 1.372 GB, free: 4.863 MB / 1.061 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004981/0.3653, allocations: 263.1 kB / 1.372 GB, free: 4.582 MB / 1.061 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.555e-06/0.3653, allocations: 0 / 1.372 GB, free: 4.582 MB / 1.061 GB Notification: Performance of matching and sorting (n=48) (initialization): time 0.0007287/0.366, allocations: 396.7 kB / 1.373 GB, free: 4.176 MB / 1.061 GB Notification: Performance of prepare postOptimizeDAE: time 4.11e-05/0.366, allocations: 33.7 kB / 1.373 GB, free: 4.137 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.374e-06/0.3661, allocations: 7.938 kB / 1.373 GB, free: 4.129 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.635e-05/0.3661, allocations: 3.984 kB / 1.373 GB, free: 4.125 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001986/0.3663, allocations: 39.86 kB / 1.373 GB, free: 4.086 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 9.027e-06/0.3663, allocations: 4 kB / 1.373 GB, free: 4.082 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002814/0.3666, allocations: 67.84 kB / 1.373 GB, free: 4.016 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.788e-05/0.3666, allocations: 12 kB / 1.373 GB, free: 4.004 MB / 1.061 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 6 * Number of states: 0 () * Number of discrete variables: 36 ($PRE.wseCon.T1.enableFire,$PRE.wseCon.T2.enableFire,wseCon.stateGraphRoot.resume,wseCon.stateGraphRoot.suspend,wseCon.stateGraphRoot.activeSteps,wseCon.T2.t_start,$PRE.wseCon.T2.t_start,wseCon.T2.fire,wseCon.T2.enableFire,wseCon.T2.localCondition,wseCon.on.oldActive,$PRE.wseCon.on.oldActive,wseCon.on.newActive,$PRE.wseCon.on.newActive,wseCon.on.localActive,$PRE.wseCon.on.localActive,wseCon.on.active,wseCon.T1.t_start,$PRE.wseCon.T1.t_start,wseCon.T1.fire,wseCon.T1.enableFire,wseCon.T1.localCondition,wseCon.off.active,wseCon.off.oldActive,$PRE.wseCon.off.oldActive,wseCon.off.newActive,$PRE.wseCon.off.newActive,wseCon.off.localActive,$PRE.wseCon.off.localActive,wseCHWST.count,$PRE.wseCHWST.count,wseCHWST.T_start,$PRE.wseCHWST.T_start,$whenCondition1,$whenCondition2,$whenCondition3) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (47): * Single equations (assignments): 46 * 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 0.0001917/0.3668, allocations: 178.8 kB / 1.373 GB, free: 3.824 MB / 1.061 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.24e-05/0.3668, allocations: 15.91 kB / 1.373 GB, free: 3.809 MB / 1.061 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 6.542e-05/0.3669, allocations: 30.66 kB / 1.373 GB, free: 3.777 MB / 1.061 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.396e-06/0.3669, allocations: 11.98 kB / 1.373 GB, free: 3.766 MB / 1.061 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.24e-06/0.3669, allocations: 0 / 1.373 GB, free: 3.766 MB / 1.061 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.867e-06/0.3669, allocations: 0 / 1.373 GB, free: 3.766 MB / 1.061 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001149/0.3681, allocations: 0.6702 MB / 1.374 GB, free: 3.043 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.934e-06/0.3681, allocations: 0 / 1.374 GB, free: 3.043 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001302/0.3682, allocations: 27.92 kB / 1.374 GB, free: 3.016 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.1e-06/0.3682, allocations: 4 kB / 1.374 GB, free: 3.012 MB / 1.061 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.122e-05/0.3682, allocations: 7.938 kB / 1.374 GB, free: 3.004 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.867e-06/0.3682, allocations: 7.984 kB / 1.374 GB, free: 2.996 MB / 1.061 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.093e-06/0.3682, allocations: 0 / 1.374 GB, free: 2.996 MB / 1.061 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.000619/0.3688, allocations: 364.3 kB / 1.374 GB, free: 2.621 MB / 1.061 GB Notification: Performance of postOpt removeConstants (simulation): time 3.319e-05/0.3689, allocations: 23.73 kB / 1.374 GB, free: 2.598 MB / 1.061 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.879e-05/0.3689, allocations: 11.94 kB / 1.374 GB, free: 2.586 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002354/0.3691, allocations: 35.95 kB / 1.374 GB, free: 2.551 MB / 1.061 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001075/0.3693, allocations: 43.94 kB / 1.374 GB, free: 2.508 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.119e-05/0.3693, allocations: 11.94 kB / 1.374 GB, free: 2.496 MB / 1.061 GB Notification: Performance of sorting global known variables: time 0.0001261/0.3694, allocations: 133.2 kB / 1.374 GB, free: 2.367 MB / 1.061 GB Notification: Performance of sort global known variables: time 7e-08/0.3694, allocations: 0 / 1.374 GB, free: 2.367 MB / 1.061 GB Notification: Performance of remove unused functions: time 0.0003178/0.3697, allocations: 63.89 kB / 1.375 GB, free: 2.305 MB / 1.061 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 22 (wseCon.T1.enableFire,wseCon.T2.enableFire,wseCon.on.active,wseCon.off.active,$whenCondition3,$whenCondition2,$whenCondition1,wseCHWST.T_start,wseCHWST.count,wseCon.off.localActive,wseCon.off.newActive,wseCon.off.oldActive,wseCon.T1.localCondition,wseCon.T1.fire,wseCon.T1.t_start,wseCon.on.localActive,wseCon.on.newActive,wseCon.on.oldActive,wseCon.T2.localCondition,wseCon.T2.fire,wseCon.T2.t_start,wseCon.stateGraphRoot.activeSteps) * Number of discrete states: 3 (wseCHWST.count,wseCon.off.newActive,wseCon.on.newActive) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (32): * Single equations (assignments): 26 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 6 * 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 0.001018/0.3707, allocations: 0.9217 MB / 1.375 GB, free: 1.355 MB / 1.061 GB Notification: Performance of simCode: created initialization part: time 0.0006831/0.3714, allocations: 345.1 kB / 1.376 GB, free: 1 MB / 1.061 GB Notification: Performance of simCode: created event and clocks part: time 2.394e-06/0.3714, allocations: 0 / 1.376 GB, free: 1 MB / 1.061 GB Notification: Performance of simCode: created simulation system equations: time 0.0002712/0.3717, allocations: 119.8 kB / 1.376 GB, free: 0.8828 MB / 1.061 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003489/0.372, allocations: 47.83 kB / 1.376 GB, free: 0.8359 MB / 1.061 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003855/0.3759, allocations: 2.726 MB / 1.379 GB, free: 13.97 MB / 1.076 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001622/0.3761, allocations: 158.6 kB / 1.379 GB, free: 13.79 MB / 1.076 GB Notification: Performance of simCode: alias equations: time 0.0001191/0.3762, allocations: 26.28 kB / 1.379 GB, free: 13.77 MB / 1.076 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001584/0.3763, allocations: 79.41 kB / 1.379 GB, free: 13.69 MB / 1.076 GB Notification: Performance of SimCode: time 9.92e-07/0.3763, allocations: 0 / 1.379 GB, free: 13.69 MB / 1.076 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.0337/0.41, allocations: 6.152 MB / 1.385 GB, free: 7.703 MB / 1.076 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.64/12.05, allocations: 10.81 kB / 1.385 GB, free: 7.695 MB / 1.076 GB " [Timeout remaining time 288] (rm -f Buildings_latest_Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl.pipe ; mkfifo Buildings_latest_Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl.pipe ; head -c 1048576 < Buildings_latest_Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl.pipe >> ../files/Buildings_latest_Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_latest_Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl_res.mat --tempDir=temp_Buildings_latest_Buildings_Examples_ChillerPlant_BaseClasses_Controls_Examples_WSEControl_fmu --startTime=0 --stopTime=3600 --stepSize=1.44 --timeout=800 --tolerance=1e-06 Buildings_latest_Buildings_Examples_ChillerPlant_BaseClasses_Controls_Examples_WSEControl.fmu > Buildings_latest_Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Examples_ChillerPlant_BaseClasses_Controls_Examples_WSEControl.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Examples.ChillerPlant.BaseClasses.Controls.Examples.WSEControl.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: 18.757835358846933]