Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.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 0.0009688/0.0009688, allocations: 88.23 kB / 20.45 MB, free: 4.117 MB / 18.57 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 0.0009355/0.0009355, allocations: 161 kB / 23.82 MB, free: 0.75 MB / 18.57 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 0.9221/0.9221, allocations: 177.1 MB / 204.2 MB, free: 5.605 MB / 186.7 MB
"
[Timeout remaining time 179]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/package.mo", uses=false) [Timeout 180]
"[/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo.
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/package.mo): time 0.581/0.581, allocations: 110.3 MB / 371 MB, free: 12.52 MB / 346.7 MB
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:44:3-56:20:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:58:3-65:19:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:67:3-72:20:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:74:3-79:20:writable] Warning: External function annotation should occur on the external-clause, not on the function.
"
[Timeout remaining time 179]
Using package BuildSysPro with version 3.6.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/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(BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance")
translateModel(BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance") [Timeout 660]
"Notification: Performance of FrontEnd - loaded program: time 1.233e-06/1.233e-06, allocations: 0.875 kB / 475.2 MB, free: 15.2 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 1.528e-05/1.651e-05, allocations: 2.312 kB / 475.2 MB, free: 15.19 MB / 410.7 MB
Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance): time 0.1284/0.1285, allocations: 150.8 MB / 0.6113 GB, free: 8.09 MB / 0.5261 GB
Notification: Performance of NFInst.instExpressions: time 0.005299/0.1338, allocations: 3.824 MB / 0.615 GB, free: 4.258 MB / 0.5261 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0007404/0.1345, allocations: 55.56 kB / 0.6151 GB, free: 4.203 MB / 0.5261 GB
Notification: Performance of NFTyping.typeComponents: time 0.0007252/0.1352, allocations: 285.9 kB / 0.6154 GB, free: 3.922 MB / 0.5261 GB
Notification: Performance of NFTyping.typeBindings: time 0.001675/0.1369, allocations: 1.061 MB / 0.6164 GB, free: 2.855 MB / 0.5261 GB
Notification: Performance of NFTyping.typeClassSections: time 0.001521/0.1384, allocations: 0.9831 MB / 0.6174 GB, free: 1.871 MB / 0.5261 GB
Notification: Performance of NFFlatten.flatten: time 0.002162/0.1406, allocations: 2.538 MB / 0.6198 GB, free: 15.33 MB / 0.5417 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0008699/0.1415, allocations: 0.732 MB / 0.6206 GB, free: 14.58 MB / 0.5417 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.001199/0.1426, allocations: 1.192 MB / 0.6217 GB, free: 13.38 MB / 0.5417 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.001061/0.1437, allocations: 0.7941 MB / 0.6225 GB, free: 12.6 MB / 0.5417 GB
Notification: Performance of NFPackage.collectConstants: time 0.0001173/0.1438, allocations: 104 kB / 0.6226 GB, free: 12.5 MB / 0.5417 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0009111/0.1447, allocations: 0.7209 MB / 0.6233 GB, free: 11.77 MB / 0.5417 GB
Notification: Performance of NFScalarize.scalarize: time 0.000338/0.1451, allocations: 0.526 MB / 0.6238 GB, free: 11.25 MB / 0.5417 GB
Notification: Performance of NFVerifyModel.verify: time 0.0003744/0.1455, allocations: 451 kB / 0.6242 GB, free: 10.8 MB / 0.5417 GB
Notification: Performance of NFConvertDAE.convert: time 0.001249/0.1467, allocations: 1.382 MB / 0.6256 GB, free: 9.418 MB / 0.5417 GB
Notification: Performance of FrontEnd - DAE generated: time 3.276e-06/0.1467, allocations: 0 / 0.6256 GB, free: 9.418 MB / 0.5417 GB
Notification: Performance of FrontEnd: time 1.032e-06/0.1467, allocations: 0 / 0.6256 GB, free: 9.418 MB / 0.5417 GB
Notification: Performance of Transformations before backend: time 1.472e-05/0.1467, allocations: 0 / 0.6256 GB, free: 9.418 MB / 0.5417 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 212
 * Number of variables: 212
Notification: Performance of Generate backend data structure: time 0.001457/0.1482, allocations: 1.503 MB / 0.6271 GB, free: 7.871 MB / 0.5417 GB
Notification: Performance of prepare preOptimizeDAE: time 3.43e-05/0.1482, allocations: 8.625 kB / 0.6271 GB, free: 7.863 MB / 0.5417 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001067/0.1493, allocations: 435.5 kB / 0.6275 GB, free: 7.438 MB / 0.5417 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0008564/0.1501, allocations: 0.7591 MB / 0.6282 GB, free: 6.656 MB / 0.5417 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.314e-05/0.1502, allocations: 70.06 kB / 0.6283 GB, free: 6.586 MB / 0.5417 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 9.978e-05/0.1503, allocations: 95.98 kB / 0.6284 GB, free: 6.492 MB / 0.5417 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001047/0.1513, allocations: 1.202 MB / 0.6296 GB, free: 5.125 MB / 0.5417 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.921e-05/0.1513, allocations: 0 / 0.6296 GB, free: 5.125 MB / 0.5417 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.473e-05/0.1514, allocations: 40 kB / 0.6296 GB, free: 5.086 MB / 0.5417 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.076e-05/0.1514, allocations: 37.98 kB / 0.6296 GB, free: 5.047 MB / 0.5417 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005696/0.152, allocations: 351.6 kB / 0.63 GB, free: 4.707 MB / 0.5417 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 0.002962/0.155, allocations: 3.355 MB / 0.6332 GB, free: 1.25 MB / 0.5417 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0003371/0.1553, allocations: 215.3 kB / 0.6335 GB, free: 1.031 MB / 0.5417 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0001331/0.1555, allocations: 97.89 kB / 0.6335 GB, free: 0.9375 MB / 0.5417 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0001104/0.1556, allocations: 31.98 kB / 0.6336 GB, free: 0.9062 MB / 0.5417 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.129e-05/0.1556, allocations: 41.39 kB / 0.6336 GB, free: 0.8555 MB / 0.5417 GB
Notification: Performance of pre-optimization done (n=36): time 1.974e-06/0.1556, allocations: 0 / 0.6336 GB, free: 0.8555 MB / 0.5417 GB
Notification: Performance of matching and sorting (n=38): time 0.001458/0.1571, allocations: 0.859 MB / 0.6345 GB, free: 15.96 MB / 0.5573 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 2.929e-05/0.1571, allocations: 55.41 kB / 0.6345 GB, free: 15.89 MB / 0.5573 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006058/0.1577, allocations: 0.6829 MB / 0.6352 GB, free: 15.19 MB / 0.5573 GB
Notification: Performance of collectPreVariables (initialization): time 3.154e-05/0.1577, allocations: 37.64 kB / 0.6352 GB, free: 15.15 MB / 0.5573 GB
Notification: Performance of collectInitialEqns (initialization): time 0.000265/0.158, allocations: 0.5803 MB / 0.6358 GB, free: 14.56 MB / 0.5573 GB
Notification: Performance of collectInitialBindings (initialization): time 8.741e-05/0.1581, allocations: 146.8 kB / 0.6359 GB, free: 14.41 MB / 0.5573 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001367/0.1582, allocations: 131.9 kB / 0.636 GB, free: 14.28 MB / 0.5573 GB
Notification: Performance of setup shared object (initialization): time 0.0001643/0.1584, allocations: 0.5547 MB / 0.6366 GB, free: 13.71 MB / 0.5573 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001476/0.1585, allocations: 77.25 kB / 0.6367 GB, free: 13.63 MB / 0.5573 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002744/0.1588, allocations: 394 kB / 0.637 GB, free: 13.14 MB / 0.5573 GB
Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: volDyn.dynBal.medium.p = volDyn.dynBal.p_start (bou.p = volDyn.dynBal.p_start)
Notification: Performance of analyzeInitialSystem (initialization): time 0.000697/0.1595, allocations: 0.5779 MB / 0.6376 GB, free: 12.46 MB / 0.5573 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.966e-06/0.1595, allocations: 0 / 0.6376 GB, free: 12.46 MB / 0.5573 GB
Notification: Performance of matching and sorting (n=74) (initialization): time 0.000585/0.1601, allocations: 477 kB / 0.6381 GB, free: 11.98 MB / 0.5573 GB
Notification: Performance of prepare postOptimizeDAE: time 2.022e-05/0.1601, allocations: 11.94 kB / 0.6381 GB, free: 11.97 MB / 0.5573 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.748e-06/0.1601, allocations: 4 kB / 0.6381 GB, free: 11.97 MB / 0.5573 GB
Notification: Performance of postOpt tearingSystem (initialization): time 2.458e-05/0.1601, allocations: 15.98 kB / 0.6381 GB, free: 11.95 MB / 0.5573 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003286/0.1605, allocations: 139.8 kB / 0.6382 GB, free: 11.82 MB / 0.5573 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.141e-05/0.1605, allocations: 12 kB / 0.6382 GB, free: 11.8 MB / 0.5573 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003406/0.1608, allocations: 43.95 kB / 0.6383 GB, free: 11.76 MB / 0.5573 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.702e-05/0.1609, allocations: 24 kB / 0.6383 GB, free: 11.74 MB / 0.5573 GB
Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization system:
         volDyn.dynBal.medium.p = volDyn.dynBal.p_start.
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 25
 * 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 initialization (74):
 * Single equations (assignments): 74
 * 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 0.0001904/0.161, allocations: 205.7 kB / 0.6385 GB, free: 11.53 MB / 0.5573 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 9.34e-05/0.1611, allocations: 91.53 kB / 0.6386 GB, free: 11.44 MB / 0.5573 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 8.211e-05/0.1612, allocations: 78.94 kB / 0.6386 GB, free: 11.36 MB / 0.5573 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.549e-06/0.1612, allocations: 4 kB / 0.6387 GB, free: 11.36 MB / 0.5573 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 5.901e-06/0.1612, allocations: 0 / 0.6387 GB, free: 11.36 MB / 0.5573 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0003538/0.1616, allocations: 0.5095 MB / 0.6392 GB, free: 10.76 MB / 0.5573 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001338/0.1629, allocations: 1.218 MB / 0.6403 GB, free: 9.434 MB / 0.5573 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.07e-06/0.1629, allocations: 8 kB / 0.6403 GB, free: 9.426 MB / 0.5573 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002162/0.1631, allocations: 84.39 kB / 0.6404 GB, free: 9.344 MB / 0.5573 GB
Notification: Performance of postOpt tearingSystem (simulation): time 8.065e-06/0.1631, allocations: 12 kB / 0.6404 GB, free: 9.332 MB / 0.5573 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.612e-05/0.1632, allocations: 12 kB / 0.6405 GB, free: 9.32 MB / 0.5573 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 6.151e-06/0.1632, allocations: 7.938 kB / 0.6405 GB, free: 9.312 MB / 0.5573 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.769e-06/0.1632, allocations: 7.938 kB / 0.6405 GB, free: 9.305 MB / 0.5573 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0005901/0.1638, allocations: 0.6311 MB / 0.6411 GB, free: 8.59 MB / 0.5573 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0001819/0.164, allocations: 131.5 kB / 0.6412 GB, free: 8.461 MB / 0.5573 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.852e-05/0.164, allocations: 23.92 kB / 0.6412 GB, free: 8.438 MB / 0.5573 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002836/0.1643, allocations: 31.94 kB / 0.6413 GB, free: 8.406 MB / 0.5573 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 4.286e-05/0.1643, allocations: 43.83 kB / 0.6413 GB, free: 8.363 MB / 0.5573 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.625e-05/0.1644, allocations: 23.98 kB / 0.6413 GB, free: 8.34 MB / 0.5573 GB
Notification: Performance of sorting global known variables: time 0.0003327/0.1647, allocations: 430.9 kB / 0.6417 GB, free: 7.922 MB / 0.5573 GB
Notification: Performance of sort global known variables: time 6e-08/0.1647, allocations: 0 / 0.6417 GB, free: 7.922 MB / 0.5573 GB
Notification: Performance of remove unused functions: time 0.0006143/0.1653, allocations: 255.9 kB / 0.642 GB, free: 7.672 MB / 0.5573 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 17
 * Number of states: 3 (volDyn.dynBal.medium.Xi[1],volDyn.dynBal.U,volDyn.dynBal.mC[1])
 * 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 (38):
 * Single equations (assignments): 38
 * 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 0.0002768/0.1656, allocations: 167 kB / 0.6421 GB, free: 7.496 MB / 0.5573 GB
Notification: Performance of simCode: created initialization part: time 0.000415/0.166, allocations: 281.3 kB / 0.6424 GB, free: 7.219 MB / 0.5573 GB
Notification: Performance of simCode: created event and clocks part: time 3.557e-06/0.166, allocations: 384 / 0.6424 GB, free: 7.219 MB / 0.5573 GB
Notification: Performance of simCode: created simulation system equations: time 0.0001261/0.1661, allocations: 127.4 kB / 0.6425 GB, free: 7.09 MB / 0.5573 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0011/0.1672, allocations: 452.5 kB / 0.643 GB, free: 6.668 MB / 0.5573 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002033/0.1693, allocations: 1.618 MB / 0.6445 GB, free: 4.945 MB / 0.5573 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001612/0.1694, allocations: 242.9 kB / 0.6448 GB, free: 4.688 MB / 0.5573 GB
Notification: Performance of simCode: alias equations: time 0.0004404/0.1699, allocations: 186.3 kB / 0.645 GB, free: 4.5 MB / 0.5573 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001212/0.17, allocations: 64.5 kB / 0.645 GB, free: 4.438 MB / 0.5573 GB
Notification: Performance of SimCode: time 1.363e-06/0.17, allocations: 0 / 0.645 GB, free: 4.438 MB / 0.5573 GB
Notification: Performance of Templates: time 0.2213/0.3913, allocations: 15.48 MB / 0.6601 GB, free: 49.8 MB / 0.5573 GB
"
[Timeout remaining time 660]
make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.makefile [Timeout 660]
(rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.sim & ./BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance -abortSlowSimulation -alarm=240  -lv LOG_STATS > BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolumeTraceSubstance.pipe 2>&1) [Timeout 240]
[Calling sys.exit(0), Time elapsed: 4.215715387836099]