Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.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 0.001427/0.001427, allocations: 99.64 kB / 18.94 MB, free: 2.551 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 0.001463/0.001463, allocations: 217.1 kB / 22.25 MB, free: 4.852 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 1.48/1.48, allocations: 230.6 MB / 256 MB, free: 7.781 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 3.531/3.531, allocations: 0.5107 GB / 0.8158 GB, free: 17.78 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.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctSnapActing_Subsequences_Validation_ActiveAirFlow",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctSnapActing_Subsequences_Validation_ActiveAirFlow",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: 63.19 kB / 1.186 GB, free: 13.71 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4054/0.4074, allocations: 181.9 MB / 1.363 GB, free: 14.04 MB / 1.061 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow): time 0.002662/0.4101, allocations: 1.068 MB / 1.364 GB, free: 12.97 MB / 1.061 GB Notification: Performance of NFInst.instExpressions: time 0.001431/0.4115, allocations: 1.046 MB / 1.365 GB, free: 11.91 MB / 1.061 GB Notification: Performance of NFInst.updateImplicitVariability: time 9.051e-05/0.4116, allocations: 8 kB / 1.366 GB, free: 11.9 MB / 1.061 GB Notification: Performance of NFTyping.typeComponents: time 6.733e-05/0.4117, allocations: 23.67 kB / 1.366 GB, free: 11.88 MB / 1.061 GB Notification: Performance of NFTyping.typeBindings: time 0.0001327/0.4118, allocations: 31.73 kB / 1.366 GB, free: 11.85 MB / 1.061 GB Notification: Performance of NFTyping.typeClassSections: time 0.0003075/0.4121, allocations: 87.84 kB / 1.366 GB, free: 11.76 MB / 1.061 GB Notification: Performance of NFFlatten.flatten: time 0.0002794/0.4124, allocations: 228.2 kB / 1.366 GB, free: 11.54 MB / 1.061 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002223/0.4126, allocations: 84.59 kB / 1.366 GB, free: 11.45 MB / 1.061 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0002321/0.4129, allocations: 107.6 kB / 1.366 GB, free: 11.34 MB / 1.061 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001393/0.413, allocations: 83.55 kB / 1.366 GB, free: 11.26 MB / 1.061 GB Notification: Performance of NFPackage.collectConstants: time 4.012e-05/0.413, allocations: 28 kB / 1.366 GB, free: 11.23 MB / 1.061 GB Notification: Performance of NFFlatten.collectFunctions: time 6.748e-05/0.4131, allocations: 35.88 kB / 1.366 GB, free: 11.2 MB / 1.061 GB Notification: Performance of NFScalarize.scalarize: time 5.178e-05/0.4132, allocations: 51.84 kB / 1.366 GB, free: 11.15 MB / 1.061 GB Notification: Performance of NFVerifyModel.verify: time 9.696e-05/0.4133, allocations: 83.52 kB / 1.366 GB, free: 11.07 MB / 1.061 GB Notification: Performance of NFConvertDAE.convert: time 0.000382/0.4136, allocations: 318.9 kB / 1.367 GB, free: 10.75 MB / 1.061 GB Notification: Performance of FrontEnd - DAE generated: time 4.689e-06/0.4137, allocations: 0 / 1.367 GB, free: 10.75 MB / 1.061 GB Notification: Performance of FrontEnd: time 1.453e-06/0.4137, allocations: 0 / 1.367 GB, free: 10.75 MB / 1.061 GB Notification: Performance of Transformations before backend: time 1.097e-05/0.4137, allocations: 3.984 kB / 1.367 GB, free: 10.75 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: 52 * Number of variables: 52 Notification: Performance of Generate backend data structure: time 0.0007728/0.4144, allocations: 425.8 kB / 1.367 GB, free: 10.3 MB / 1.061 GB Notification: Performance of prepare preOptimizeDAE: time 4.36e-05/0.4145, allocations: 11.97 kB / 1.367 GB, free: 10.29 MB / 1.061 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 6.738e-05/0.4145, allocations: 58.73 kB / 1.367 GB, free: 10.22 MB / 1.061 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001787/0.4147, allocations: 32.78 kB / 1.367 GB, free: 10.19 MB / 1.061 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005076/0.4152, allocations: 218.4 kB / 1.367 GB, free: 9.953 MB / 1.061 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.794e-05/0.4153, allocations: 16.81 kB / 1.367 GB, free: 9.938 MB / 1.061 GB Notification: Performance of preOpt expandDerOperator (simulation): time 4.747e-05/0.4153, allocations: 20.38 kB / 1.367 GB, free: 9.918 MB / 1.061 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004331/0.4157, allocations: 199.8 kB / 1.368 GB, free: 9.719 MB / 1.061 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.411e-05/0.4158, allocations: 3.938 kB / 1.368 GB, free: 9.715 MB / 1.061 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.339e-05/0.4158, allocations: 15.98 kB / 1.368 GB, free: 9.699 MB / 1.061 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.805e-06/0.4158, allocations: 8 kB / 1.368 GB, free: 9.691 MB / 1.061 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0004245/0.4162, allocations: 153.7 kB / 1.368 GB, free: 9.543 MB / 1.061 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0009153/0.4171, allocations: 0.5065 MB / 1.368 GB, free: 8.992 MB / 1.061 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0003854/0.4175, allocations: 154.5 kB / 1.368 GB, free: 8.832 MB / 1.061 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001894/0.4177, allocations: 64.81 kB / 1.368 GB, free: 8.766 MB / 1.061 GB Notification: Performance of preOpt evalFunc (simulation): time 2.459e-05/0.4177, allocations: 3.906 kB / 1.368 GB, free: 8.762 MB / 1.061 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.327e-05/0.4178, allocations: 34.56 kB / 1.368 GB, free: 8.719 MB / 1.061 GB Notification: Performance of pre-optimization done (n=17): time 1.413e-06/0.4178, allocations: 0 / 1.368 GB, free: 8.719 MB / 1.061 GB Notification: Performance of matching and sorting (n=17): time 0.0006357/0.4184, allocations: 211.2 kB / 1.369 GB, free: 8.508 MB / 1.061 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.967e-05/0.4184, allocations: 63.39 kB / 1.369 GB, free: 8.434 MB / 1.061 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001858/0.4186, allocations: 186.7 kB / 1.369 GB, free: 8.242 MB / 1.061 GB Notification: Performance of collectPreVariables (initialization): time 2.164e-05/0.4187, allocations: 25.7 kB / 1.369 GB, free: 8.211 MB / 1.061 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001192/0.4188, allocations: 148.4 kB / 1.369 GB, free: 8.062 MB / 1.061 GB Notification: Performance of collectInitialBindings (initialization): time 4.669e-05/0.4188, allocations: 43.69 kB / 1.369 GB, free: 8.02 MB / 1.061 GB Notification: Performance of simplifyInitialFunctions (initialization): time 8.349e-05/0.4189, allocations: 57.64 kB / 1.369 GB, free: 7.957 MB / 1.061 GB Notification: Performance of setup shared object (initialization): time 0.0001572/0.4191, allocations: 326.8 kB / 1.369 GB, free: 7.629 MB / 1.061 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001818/0.4192, allocations: 59.95 kB / 1.37 GB, free: 7.57 MB / 1.061 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002008/0.4194, allocations: 98.14 kB / 1.37 GB, free: 7.457 MB / 1.061 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003545/0.4198, allocations: 151 kB / 1.37 GB, free: 7.293 MB / 1.061 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.024e-06/0.4198, allocations: 0 / 1.37 GB, free: 7.293 MB / 1.061 GB Notification: Performance of matching and sorting (n=22) (initialization): time 0.0004751/0.4203, allocations: 197.2 kB / 1.37 GB, free: 7.094 MB / 1.061 GB Notification: Performance of prepare postOptimizeDAE: time 1.928e-05/0.4203, allocations: 8 kB / 1.37 GB, free: 7.086 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.911e-06/0.4203, allocations: 3.938 kB / 1.37 GB, free: 7.082 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.786e-05/0.4203, allocations: 4 kB / 1.37 GB, free: 7.078 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001816/0.4205, allocations: 31.92 kB / 1.37 GB, free: 7.047 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.482e-05/0.4205, allocations: 7.969 kB / 1.37 GB, free: 7.039 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001116/0.4206, allocations: 19.89 kB / 1.37 GB, free: 7.02 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.593e-05/0.4206, allocations: 8.156 kB / 1.37 GB, free: 7.012 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: 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 0.0002151/0.4209, allocations: 145.8 kB / 1.37 GB, free: 6.859 MB / 1.061 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.255e-05/0.4209, allocations: 15.91 kB / 1.37 GB, free: 6.844 MB / 1.061 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 4.569e-05/0.4209, allocations: 21.81 kB / 1.37 GB, free: 6.824 MB / 1.061 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.395e-06/0.4209, allocations: 0 / 1.37 GB, free: 6.824 MB / 1.061 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.31e-06/0.421, allocations: 3.938 kB / 1.37 GB, free: 6.82 MB / 1.061 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.19e-06/0.421, allocations: 7.922 kB / 1.37 GB, free: 6.812 MB / 1.061 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0003195/0.4213, allocations: 232.6 kB / 1.37 GB, free: 6.543 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.627e-06/0.4213, allocations: 3.984 kB / 1.37 GB, free: 6.539 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001458/0.4214, allocations: 27.98 kB / 1.37 GB, free: 6.512 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.856e-06/0.4214, allocations: 4 kB / 1.37 GB, free: 6.508 MB / 1.061 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.152e-05/0.4214, allocations: 0 / 1.37 GB, free: 6.508 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.408e-06/0.4214, allocations: 3.984 kB / 1.37 GB, free: 6.504 MB / 1.061 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.82e-07/0.4214, allocations: 0 / 1.37 GB, free: 6.504 MB / 1.061 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004542/0.4219, allocations: 261.3 kB / 1.371 GB, free: 6.234 MB / 1.061 GB Notification: Performance of postOpt removeConstants (simulation): time 3.407e-05/0.4219, allocations: 19.84 kB / 1.371 GB, free: 6.215 MB / 1.061 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 2.39e-05/0.422, allocations: 4 kB / 1.371 GB, free: 6.211 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001149/0.4221, allocations: 11.98 kB / 1.371 GB, free: 6.199 MB / 1.061 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.446e-05/0.4222, allocations: 27.88 kB / 1.371 GB, free: 6.172 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.612e-05/0.4222, allocations: 11.98 kB / 1.371 GB, free: 6.16 MB / 1.061 GB Notification: Performance of sorting global known variables: time 9.567e-05/0.4223, allocations: 119.2 kB / 1.371 GB, free: 6.043 MB / 1.061 GB Notification: Performance of sort global known variables: time 9e-08/0.4223, allocations: 0 / 1.371 GB, free: 6.043 MB / 1.061 GB Notification: Performance of remove unused functions: time 0.0002683/0.4225, allocations: 35.89 kB / 1.371 GB, free: 6.008 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: 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 0.0008165/0.4234, allocations: 0.8114 MB / 1.372 GB, free: 5.172 MB / 1.061 GB Notification: Performance of simCode: created initialization part: time 0.000429/0.4238, allocations: 135.8 kB / 1.372 GB, free: 5.039 MB / 1.061 GB Notification: Performance of simCode: created event and clocks part: time 5.219e-06/0.4238, allocations: 4 kB / 1.372 GB, free: 5.035 MB / 1.061 GB Notification: Performance of simCode: created simulation system equations: time 0.0001889/0.424, allocations: 71.89 kB / 1.372 GB, free: 4.965 MB / 1.061 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002933/0.4243, allocations: 21.08 kB / 1.372 GB, free: 4.945 MB / 1.061 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002738/0.427, allocations: 1.984 MB / 1.374 GB, free: 2.848 MB / 1.061 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001232/0.4271, allocations: 121.2 kB / 1.374 GB, free: 2.711 MB / 1.061 GB Notification: Performance of simCode: alias equations: time 0.0001098/0.4272, allocations: 21.47 kB / 1.374 GB, free: 2.688 MB / 1.061 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001202/0.4274, allocations: 67.41 kB / 1.374 GB, free: 2.621 MB / 1.061 GB Notification: Performance of SimCode: time 6.21e-07/0.4274, allocations: 4 kB / 1.374 GB, free: 2.617 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03268/0.46, allocations: 3.819 MB / 1.378 GB, free: 14.99 MB / 1.076 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.53/11.99, allocations: 12.33 kB / 1.378 GB, free: 14.98 MB / 1.076 GB " [Timeout remaining time 288] (rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow_res.mat --tempDir=temp_Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctSnapActing_Subsequences_Validation_ActiveAirFlow_fmu --startTime=0 --stopTime=3600 --stepSize=1.44 --timeout=800 --tolerance=1e-06 Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctSnapActing_Subsequences_Validation_ActiveAirFlow.fmu > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.Subsequences.Validation.ActiveAirFlow_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctSnapActing_Subsequences_Validation_ActiveAirFlow.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctSnapActing.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: 19.075845963321626]