Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.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 0.001488/0.001488, allocations: 110.4 kB / 18.94 MB, free: 2.949 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 0.001585/0.001585, allocations: 221.7 kB / 22.26 MB, free: 5.125 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 1.534/1.534, allocations: 230.6 MB / 256 MB, free: 7.977 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.1-maint.11.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.1-maint.11.x/package.mo): time 2.849/2.849, allocations: 476.7 MB / 0.7706 GB, free: 4.266 MB / 0.6231 GB " [Timeout remaining time 176] Using package Buildings with version 11.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.1-maint.11.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: translateModel(Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|y1.y.1.|y1.y.2.|chi.m2_flow|chi.chi.m2_flow|TChiWatSupSet.y|chi.sta_a2.T|chi.sta_b2.T|chi.sta_a1.T|chi.sta_b1.T|chi.chi.PLR1|chi.chi.PLR2|dat.PLRMax|chi.chi.COP",fileNamePrefix="Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup") translateModel(Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|y1.y.1.|y1.y.2.|chi.m2_flow|chi.chi.m2_flow|TChiWatSupSet.y|chi.sta_a2.T|chi.sta_b2.T|chi.sta_a1.T|chi.sta_b1.T|chi.chi.PLR1|chi.chi.PLR2|dat.PLRMax|chi.chi.COP",fileNamePrefix="Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup") [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 0.002136/0.002136, allocations: 68.28 kB / 1.118 GB, free: 40.3 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4307/0.4329, allocations: 170 MB / 1.284 GB, free: 11.21 MB / 0.9825 GB Notification: Performance of NFInst.instantiate(Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup): time 0.2719/0.7048, allocations: 241.3 MB / 1.52 GB, free: 9.086 MB / 1.217 GB Notification: Performance of NFInst.instExpressions: time 0.07484/0.7797, allocations: 43.61 MB / 1.562 GB, free: 13.37 MB / 1.264 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.01222/0.7919, allocations: 321.2 kB / 1.562 GB, free: 13.05 MB / 1.264 GB Notification: Performance of NFTyping.typeComponents: time 0.01241/0.8043, allocations: 3.317 MB / 1.566 GB, free: 9.719 MB / 1.264 GB Notification: Performance of NFTyping.typeBindings: time 0.02899/0.8333, allocations: 8.32 MB / 1.574 GB, free: 1.371 MB / 1.264 GB Notification: Performance of NFTyping.typeClassSections: time 0.0173/0.8506, allocations: 5.944 MB / 1.58 GB, free: 11.47 MB / 1.279 GB Notification: Performance of NFFlatten.flatten: time 0.04806/0.8986, allocations: 27.16 MB / 1.606 GB, free: 256 kB / 1.295 GB Notification: Performance of NFFlatten.resolveConnections: time 1.034/1.932, allocations: 7.544 MB / 1.613 GB, free: 69.99 MB / 1.295 GB Notification: Performance of NFEvalConstants.evaluate: time 0.03148/1.964, allocations: 10.04 MB / 1.623 GB, free: 69.98 MB / 1.295 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0199/1.984, allocations: 7.231 MB / 1.63 GB, free: 68.84 MB / 1.295 GB Notification: Performance of NFPackage.collectConstants: time 0.006054/1.99, allocations: 1.064 MB / 1.631 GB, free: 68.84 MB / 1.295 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01709/2.007, allocations: 3.704 MB / 1.635 GB, free: 68.84 MB / 1.295 GB Notification: Performance of NFScalarize.scalarize: time 0.007134/2.014, allocations: 2.747 MB / 1.638 GB, free: 68.43 MB / 1.295 GB Notification: Performance of NFVerifyModel.verify: time 0.01699/2.031, allocations: 5.548 MB / 1.643 GB, free: 67.07 MB / 1.295 GB Notification: Performance of NFConvertDAE.convert: time 0.03376/2.065, allocations: 18.65 MB / 1.661 GB, free: 65.19 MB / 1.295 GB Notification: Performance of FrontEnd - DAE generated: time 6.372e-06/2.065, allocations: 0 / 1.661 GB, free: 65.19 MB / 1.295 GB Notification: Performance of FrontEnd: time 1.463e-06/2.065, allocations: 2.625 kB / 1.661 GB, free: 65.19 MB / 1.295 GB Notification: Performance of Transformations before backend: time 0.0006437/2.065, allocations: 0 / 1.661 GB, free: 65.19 MB / 1.295 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1244 * Number of variables: 1244 Notification: Performance of Generate backend data structure: time 0.04188/2.107, allocations: 10.58 MB / 1.672 GB, free: 61.14 MB / 1.295 GB Notification: Performance of prepare preOptimizeDAE: time 5.474e-05/2.107, allocations: 10 kB / 1.672 GB, free: 61.14 MB / 1.295 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01131/2.119, allocations: 1.467 MB / 1.673 GB, free: 60.61 MB / 1.295 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.02816/2.147, allocations: 11.03 MB / 1.684 GB, free: 59.08 MB / 1.295 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0008858/2.148, allocations: 0.5166 MB / 1.684 GB, free: 58.94 MB / 1.295 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.003377/2.151, allocations: 0.5223 MB / 1.685 GB, free: 58.94 MB / 1.295 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.02437/2.175, allocations: 7.333 MB / 1.692 GB, free: 58.37 MB / 1.295 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0003142/2.176, allocations: 17.56 kB / 1.692 GB, free: 58.36 MB / 1.295 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.002353/2.178, allocations: 203.9 kB / 1.692 GB, free: 58.36 MB / 1.295 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002527/2.178, allocations: 198.3 kB / 1.692 GB, free: 58.35 MB / 1.295 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01822/2.197, allocations: 6.352 MB / 1.699 GB, free: 58.28 MB / 1.295 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.06355/2.26, allocations: 33.92 MB / 1.732 GB, free: 40.58 MB / 1.295 GB Notification: Performance of preOpt comSubExp (simulation): time 0.004946/2.265, allocations: 2.335 MB / 1.734 GB, free: 40.18 MB / 1.295 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.003244/2.268, allocations: 1.731 MB / 1.736 GB, free: 39.87 MB / 1.295 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0009403/2.269, allocations: 250.7 kB / 1.736 GB, free: 39.81 MB / 1.295 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00348/2.273, allocations: 1.831 MB / 1.738 GB, free: 39.32 MB / 1.295 GB Notification: Performance of pre-optimization done (n=220): time 4.889e-06/2.273, allocations: 0 / 1.738 GB, free: 39.32 MB / 1.295 GB Notification: Performance of matching and sorting (n=220): time 0.01192/2.285, allocations: 4.984 MB / 1.743 GB, free: 37.06 MB / 1.295 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.218e-05/2.285, allocations: 86.12 kB / 1.743 GB, free: 36.99 MB / 1.295 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01829/2.303, allocations: 9.229 MB / 1.752 GB, free: 31.84 MB / 1.295 GB Notification: Performance of collectPreVariables (initialization): time 0.001207/2.304, allocations: 93.55 kB / 1.752 GB, free: 31.74 MB / 1.295 GB Notification: Performance of collectInitialEqns (initialization): time 0.004352/2.309, allocations: 3.829 MB / 1.756 GB, free: 27.91 MB / 1.295 GB Notification: Performance of collectInitialBindings (initialization): time 0.00158/2.31, allocations: 0.8126 MB / 1.756 GB, free: 27.11 MB / 1.295 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001362/2.311, allocations: 0.8004 MB / 1.757 GB, free: 26.3 MB / 1.295 GB Notification: Performance of setup shared object (initialization): time 4.668e-05/2.312, allocations: 309.1 kB / 1.757 GB, free: 26 MB / 1.295 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002867/2.314, allocations: 1.689 MB / 1.759 GB, free: 24.31 MB / 1.295 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003752/2.318, allocations: 3.31 MB / 1.762 GB, free: 20.39 MB / 1.295 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00594/2.324, allocations: 4.399 MB / 1.767 GB, free: 15.66 MB / 1.295 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.101e-05/2.324, allocations: 8 kB / 1.767 GB, free: 15.66 MB / 1.295 GB Notification: Performance of matching and sorting (n=414) (initialization): time 0.01123/2.335, allocations: 5.21 MB / 1.772 GB, free: 10.58 MB / 1.295 GB Notification: Performance of prepare postOptimizeDAE: time 3.761e-05/2.335, allocations: 16 kB / 1.772 GB, free: 10.56 MB / 1.295 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.147e-05/2.335, allocations: 33.02 kB / 1.772 GB, free: 10.53 MB / 1.295 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.647e-05/2.335, allocations: 48 kB / 1.772 GB, free: 10.48 MB / 1.295 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003179/2.339, allocations: 0.8447 MB / 1.773 GB, free: 9.688 MB / 1.295 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.364e-05/2.339, allocations: 72.2 kB / 1.773 GB, free: 9.633 MB / 1.295 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007872/2.347, allocations: 0.647 MB / 1.773 GB, free: 8.996 MB / 1.295 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006298/2.347, allocations: 164 kB / 1.773 GB, free: 8.836 MB / 1.295 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 140 * Number of states: 0 () * Number of discrete variables: 16 ($whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,chi.chi.tru.y,y1.intTimTab.idx,$PRE.y1.intTimTab.idx,y1.intTimTab.y[2],$PRE.y1.intTimTab.y[2],y1.intTimTab.y[1],$PRE.y1.intTimTab.y[1],y1.y[2],chi.com.y1One,chi.y1[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (414): * Single equations (assignments): 414 * 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 0.006576/2.354, allocations: 3.063 MB / 1.776 GB, free: 5.812 MB / 1.295 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.00332/2.357, allocations: 0.7663 MB / 1.777 GB, free: 5.043 MB / 1.295 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00877/2.366, allocations: 4.165 MB / 1.781 GB, free: 0.8906 MB / 1.295 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.034e-05/2.366, allocations: 31.92 kB / 1.781 GB, free: 0.8594 MB / 1.295 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.947e-06/2.366, allocations: 0 / 1.781 GB, free: 0.8594 MB / 1.295 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.006188/2.372, allocations: 3.247 MB / 1.784 GB, free: 13.56 MB / 1.311 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0289/2.401, allocations: 11.31 MB / 1.796 GB, free: 2.199 MB / 1.311 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.454e-05/2.401, allocations: 4.25 kB / 1.796 GB, free: 2.195 MB / 1.311 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002664/2.404, allocations: 0.5343 MB / 1.796 GB, free: 1.68 MB / 1.311 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.072e-05/2.404, allocations: 15.98 kB / 1.796 GB, free: 1.664 MB / 1.311 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002315/2.404, allocations: 83.94 kB / 1.796 GB, free: 1.582 MB / 1.311 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.316e-05/2.404, allocations: 11.38 kB / 1.796 GB, free: 1.574 MB / 1.311 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.608e-06/2.404, allocations: 4 kB / 1.796 GB, free: 1.57 MB / 1.311 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01388/2.418, allocations: 6.175 MB / 1.802 GB, free: 11.34 MB / 1.326 GB Notification: Performance of postOpt removeConstants (simulation): time 0.005637/2.423, allocations: 1.431 MB / 1.804 GB, free: 9.918 MB / 1.326 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.002566/2.426, allocations: 63.97 kB / 1.804 GB, free: 9.855 MB / 1.326 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.005131/2.431, allocations: 243.6 kB / 1.804 GB, free: 9.617 MB / 1.326 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003756/2.432, allocations: 161 kB / 1.804 GB, free: 9.461 MB / 1.326 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0003514/2.432, allocations: 119.5 kB / 1.804 GB, free: 9.348 MB / 1.326 GB Notification: Performance of sorting global known variables: time 0.01583/2.448, allocations: 6.572 MB / 1.811 GB, free: 2.801 MB / 1.326 GB Notification: Performance of sort global known variables: time 2.01e-07/2.448, allocations: 0 / 1.811 GB, free: 2.801 MB / 1.326 GB Notification: Performance of remove unused functions: time 0.01081/2.459, allocations: 2.109 MB / 1.813 GB, free: 0.6875 MB / 1.326 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 9 * Number of states: 20 (chi.chi.vol1.dynBal.U,chi.chi.vol2.dynBal.U,chi.valEva.junInl[1].vol.dynBal.U,chi.valEva.junInl[2].vol.dynBal.U,chi.valEva.junOut[1].vol.dynBal.U,chi.valEva.junOut[2].vol.dynBal.U,chi.valEva.val[1].filter.s[1],chi.valEva.val[1].filter.s[2],chi.valEva.val[2].filter.s[1],chi.valEva.val[2].filter.s[2],chi.valCon.junInl[1].vol.dynBal.U,chi.valCon.junInl[2].vol.dynBal.U,chi.valCon.junOut[1].vol.dynBal.U,chi.valCon.junOut[2].vol.dynBal.U,chi.valCon.val[1].filter.s[1],chi.valCon.val[1].filter.s[2],chi.valCon.val[2].filter.s[1],chi.valCon.val[2].filter.s[2],chi.temConLvg.T,chi.temEvaLvg.T) * Number of discrete variables: 12 ($whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,chi.y1[1],chi.com.y1One,y1.y[2],y1.intTimTab.y[1],y1.intTimTab.y[2],y1.intTimTab.idx) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (230): * Single equations (assignments): 217 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 10 * When equations: 3 * 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 0.002909/2.461, allocations: 1.086 MB / 1.814 GB, free: 15.73 MB / 1.342 GB Notification: Performance of simCode: created initialization part: time 0.009432/2.471, allocations: 3.749 MB / 1.817 GB, free: 12.09 MB / 1.342 GB Notification: Performance of simCode: created event and clocks part: time 1.327e-05/2.471, allocations: 8.25 kB / 1.817 GB, free: 12.08 MB / 1.342 GB Notification: Performance of simCode: created simulation system equations: time 0.003845/2.475, allocations: 1.595 MB / 1.819 GB, free: 10.54 MB / 1.342 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0279/2.503, allocations: 4.552 MB / 1.823 GB, free: 6.168 MB / 1.342 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.04295/2.546, allocations: 16.41 MB / 1.839 GB, free: 5.867 MB / 1.357 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.01098/2.557, allocations: 5.518 MB / 1.845 GB, free: 332 kB / 1.357 GB Notification: Performance of simCode: alias equations: time 0.01108/2.568, allocations: 2.155 MB / 1.847 GB, free: 14.21 MB / 1.373 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.003126/2.571, allocations: 0.5337 MB / 1.847 GB, free: 13.68 MB / 1.373 GB Notification: Performance of SimCode: time 1.473e-06/2.571, allocations: 0 / 1.847 GB, free: 13.68 MB / 1.373 GB Notification: Performance of Templates: time 0.28/2.851, allocations: 159.3 MB / 2.003 GB, free: 436 kB / 1.514 GB " [Timeout remaining time 296] make -j1 -f Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.makefile [Timeout 300] (rm -f Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.pipe ; mkfifo Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.pipe ; head -c 1048576 < Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.pipe >> ../files/Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.sim & ./Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup -abortSlowSimulation -alarm=400 -emit_protected -lv LOG_STATS > Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.pipe 2>&1) [Timeout 400] diffSimulationResults("Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_11.x/Buildings_DHC_Plants_Combined_Subsystems_Validation_ChillerGroup.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_11_Buildings.DHC.Plants.Combined.Subsystems.Validation.ChillerGroup.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: 16.317160092294216]