Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary.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 0.001593/0.001593, 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 0.002087/0.002087, allocations: 217.6 kB / 22.25 MB, free: 5.121 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 1.473/1.473, allocations: 230.6 MB / 256 MB, free: 7.992 MB / 206.1 MB
"
[Timeout remaining time 178]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo): time 3.164/3.164, allocations: 0.49 GB / 0.7951 GB, free: 33.27 MB / 0.6231 GB
"
[Timeout remaining time 176]
Using package Buildings with version 12.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.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: "" <> buildModelFMU(Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary,fileNamePrefix="Buildings_12_Buildings_BoundaryConditions_WeatherData_Validation_DecemberToJanuary",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary,fileNamePrefix="Buildings_12_Buildings_BoundaryConditions_WeatherData_Validation_DecemberToJanuary",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 0.002019/0.002019, allocations: 63.02 kB / 1.154 GB, free: 25.75 MB / 0.9044 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3558/0.3578, allocations: 176.1 MB / 1.326 GB, free: 1.98 MB / 1.014 GB
Notification: Performance of NFInst.instantiate(Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary): time 0.006501/0.3643, allocations: 4.623 MB / 1.33 GB, free: 13.34 MB / 1.029 GB
Notification: Performance of NFInst.instExpressions: time 0.188/0.5523, allocations: 154.1 MB / 1.481 GB, free: 2.68 MB / 1.17 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0009376/0.5533, allocations: 23.81 kB / 1.481 GB, free: 2.656 MB / 1.17 GB
Notification: Performance of NFTyping.typeComponents: time 0.0006125/0.5539, allocations: 190.3 kB / 1.481 GB, free: 2.469 MB / 1.17 GB
Notification: Performance of NFTyping.typeBindings: time 0.001912/0.5558, allocations: 0.5133 MB / 1.482 GB, free: 1.957 MB / 1.17 GB
Notification: Performance of NFTyping.typeClassSections: time 0.001896/0.5577, allocations: 0.8012 MB / 1.482 GB, free: 1.16 MB / 1.17 GB
Notification: Performance of NFFlatten.flatten: time 0.001593/0.5593, allocations: 1.269 MB / 1.484 GB, free: 15.89 MB / 1.186 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0006655/0.5599, allocations: 349.2 kB / 1.484 GB, free: 15.53 MB / 1.186 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0007353/0.5607, allocations: 434.5 kB / 1.484 GB, free: 15.1 MB / 1.186 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0005764/0.5612, allocations: 442 kB / 1.485 GB, free: 14.67 MB / 1.186 GB
Notification: Performance of NFPackage.collectConstants: time 0.0001382/0.5614, allocations: 100 kB / 1.485 GB, free: 14.57 MB / 1.186 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0008377/0.5622, allocations: 423.6 kB / 1.485 GB, free: 14.16 MB / 1.186 GB
Notification: Performance of NFScalarize.scalarize: time 0.0002682/0.5625, allocations: 275.1 kB / 1.485 GB, free: 13.89 MB / 1.186 GB
Notification: Performance of NFVerifyModel.verify: time 0.0004457/0.5629, allocations: 0.4896 MB / 1.486 GB, free: 13.39 MB / 1.186 GB
Notification: Performance of NFConvertDAE.convert: time 0.001882/0.5648, allocations: 1.451 MB / 1.487 GB, free: 11.94 MB / 1.186 GB
Notification: Performance of FrontEnd - DAE generated: time 4.438e-06/0.5648, allocations: 0 / 1.487 GB, free: 11.94 MB / 1.186 GB
Notification: Performance of FrontEnd: time 1.723e-06/0.5648, allocations: 0 / 1.487 GB, free: 11.94 MB / 1.186 GB
Notification: Performance of Transformations before backend: time 2.33e-05/0.5648, allocations: 0 / 1.487 GB, free: 11.94 MB / 1.186 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 170
 * Number of variables: 170
Notification: Performance of Generate backend data structure: time 0.002718/0.5676, allocations: 1.274 MB / 1.489 GB, free: 10.62 MB / 1.186 GB
Notification: Performance of prepare preOptimizeDAE: time 5.347e-05/0.5676, allocations: 8.031 kB / 1.489 GB, free: 10.62 MB / 1.186 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001427/0.5678, allocations: 110.7 kB / 1.489 GB, free: 10.5 MB / 1.186 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007996/0.5686, allocations: 140.2 kB / 1.489 GB, free: 10.36 MB / 1.186 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001309/0.5699, allocations: 0.6666 MB / 1.49 GB, free: 9.668 MB / 1.186 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.657e-05/0.5699, allocations: 50 kB / 1.49 GB, free: 9.617 MB / 1.186 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 9.118e-05/0.57, allocations: 63.98 kB / 1.49 GB, free: 9.555 MB / 1.186 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001219/0.5712, allocations: 0.7799 MB / 1.49 GB, free: 8.723 MB / 1.186 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.23e-05/0.5713, allocations: 3.938 kB / 1.49 GB, free: 8.719 MB / 1.186 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.309e-05/0.5713, allocations: 28 kB / 1.49 GB, free: 8.691 MB / 1.186 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.017e-05/0.5713, allocations: 20 kB / 1.49 GB, free: 8.672 MB / 1.186 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001464/0.5728, allocations: 0.9689 MB / 1.491 GB, free: 7.703 MB / 1.186 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.003743/0.5766, allocations: 2.432 MB / 1.494 GB, free: 5.199 MB / 1.186 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.001189/0.5777, allocations: 0.643 MB / 1.494 GB, free: 4.535 MB / 1.186 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0003693/0.5781, allocations: 231.5 kB / 1.495 GB, free: 4.305 MB / 1.186 GB
Notification: Performance of preOpt evalFunc (simulation): time 7.884e-05/0.5782, allocations: 32.59 kB / 1.495 GB, free: 4.273 MB / 1.186 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00068/0.5789, allocations: 427.8 kB / 1.495 GB, free: 3.836 MB / 1.186 GB
Notification: Performance of pre-optimization done (n=70): time 2.575e-06/0.5789, allocations: 4 kB / 1.495 GB, free: 3.832 MB / 1.186 GB
Notification: Performance of matching and sorting (n=70): time 0.00161/0.5805, allocations: 0.841 MB / 1.496 GB, free: 2.984 MB / 1.186 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001481/0.5806, allocations: 247.9 kB / 1.496 GB, free: 2.688 MB / 1.186 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008487/0.5815, allocations: 0.6528 MB / 1.497 GB, free: 2.023 MB / 1.186 GB
Notification: Performance of collectPreVariables (initialization): time 5.533e-05/0.5815, allocations: 37.7 kB / 1.497 GB, free: 1.98 MB / 1.186 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0003192/0.5819, allocations: 373 kB / 1.497 GB, free: 1.609 MB / 1.186 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0001987/0.5821, allocations: 238 kB / 1.497 GB, free: 1.375 MB / 1.186 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001995/0.5822, allocations: 138.4 kB / 1.498 GB, free: 1.234 MB / 1.186 GB
Notification: Performance of setup shared object (initialization): time 0.000193/0.5824, allocations: 386.8 kB / 1.498 GB, free: 0.8477 MB / 1.186 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003355/0.5828, allocations: 201.2 kB / 1.498 GB, free: 0.6484 MB / 1.186 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005063/0.5833, allocations: 325.3 kB / 1.498 GB, free: 304 kB / 1.186 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0008079/0.5841, allocations: 0.4943 MB / 1.499 GB, free: 15.78 MB / 1.201 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.126e-06/0.5841, allocations: 0 / 1.499 GB, free: 15.78 MB / 1.201 GB
Notification: Performance of matching and sorting (n=80) (initialization): time 0.001079/0.5852, allocations: 0.649 MB / 1.499 GB, free: 15.12 MB / 1.201 GB
Notification: Performance of prepare postOptimizeDAE: time 1.798e-05/0.5852, allocations: 4 kB / 1.5 GB, free: 15.12 MB / 1.201 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.512e-06/0.5852, allocations: 0 / 1.5 GB, free: 15.12 MB / 1.201 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.849e-05/0.5852, allocations: 4 kB / 1.5 GB, free: 15.12 MB / 1.201 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005157/0.5857, allocations: 139.7 kB / 1.5 GB, free: 14.98 MB / 1.201 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.03e-05/0.5857, allocations: 7.938 kB / 1.5 GB, free: 14.97 MB / 1.201 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005041/0.5862, allocations: 83.52 kB / 1.5 GB, free: 14.89 MB / 1.201 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.916e-05/0.5863, allocations: 32.11 kB / 1.5 GB, free: 14.86 MB / 1.201 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 (weaDat.decAng.tNext,$PRE.weaDat.decAng.tNext,weaDat.eqnTim.tNext,$PRE.weaDat.eqnTim.tNext,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,weaDat.locTim.tNext,$PRE.weaDat.locTim.tNext,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (80):
 * Single equations (assignments): 80
 * 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 0.0003455/0.5866, allocations: 254.2 kB / 1.5 GB, free: 14.6 MB / 1.201 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001446/0.5868, allocations: 83.48 kB / 1.5 GB, free: 14.52 MB / 1.201 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001561/0.5883, allocations: 0.8527 MB / 1.501 GB, free: 13.66 MB / 1.201 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.066e-05/0.5884, allocations: 11.94 kB / 1.501 GB, free: 13.64 MB / 1.201 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 6.723e-06/0.5884, allocations: 4 kB / 1.501 GB, free: 13.64 MB / 1.201 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.939e-06/0.5884, allocations: 3.984 kB / 1.501 GB, free: 13.64 MB / 1.201 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001203/0.5896, allocations: 0.9511 MB / 1.502 GB, free: 12.64 MB / 1.201 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.935e-06/0.5896, allocations: 7.969 kB / 1.502 GB, free: 12.63 MB / 1.201 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004442/0.59, allocations: 127.8 kB / 1.502 GB, free: 12.5 MB / 1.201 GB
Notification: Performance of postOpt tearingSystem (simulation): time 7.464e-06/0.59, allocations: 4 kB / 1.502 GB, free: 12.5 MB / 1.201 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.817e-05/0.5901, allocations: 23.98 kB / 1.502 GB, free: 12.48 MB / 1.201 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 6.442e-06/0.5901, allocations: 4 kB / 1.502 GB, free: 12.47 MB / 1.201 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.482e-06/0.5901, allocations: 7.969 kB / 1.502 GB, free: 12.46 MB / 1.201 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00118/0.5913, allocations: 0.7397 MB / 1.503 GB, free: 11.7 MB / 1.201 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.000372/0.5916, allocations: 195 kB / 1.503 GB, free: 11.51 MB / 1.201 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001118/0.5918, allocations: 20 kB / 1.503 GB, free: 11.49 MB / 1.201 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000499/0.5923, allocations: 51.94 kB / 1.503 GB, free: 11.44 MB / 1.201 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001246/0.5924, allocations: 60.53 kB / 1.503 GB, free: 11.38 MB / 1.201 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.971e-05/0.5924, allocations: 31.98 kB / 1.503 GB, free: 11.35 MB / 1.201 GB
Notification: Performance of sorting global known variables: time 0.0005834/0.593, allocations: 475 kB / 1.504 GB, free: 10.89 MB / 1.201 GB
Notification: Performance of sort global known variables: time 1.01e-07/0.593, allocations: 4 kB / 1.504 GB, free: 10.89 MB / 1.201 GB
Notification: Performance of remove unused functions: time 0.0007289/0.5938, allocations: 267.4 kB / 1.504 GB, free: 10.62 MB / 1.201 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 2
 * Number of states: 0 ()
 * Number of discrete variables: 10 ($whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,weaDat.locTim.tNext,weaDat.conTimMin.tNext,weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.decAng.tNext)
 * Number of discrete states: 5 (weaDat.locTim.tNext,weaDat.conTimMin.tNext,weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.decAng.tNext)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (81):
 * Single equations (assignments): 76
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 5
 * 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 0.003404/0.5972, allocations: 1.799 MB / 1.506 GB, free: 8.977 MB / 1.201 GB
Notification: Performance of simCode: created initialization part: time 0.001018/0.5982, allocations: 0.5326 MB / 1.506 GB, free: 8.441 MB / 1.201 GB
Notification: Performance of simCode: created event and clocks part: time 3.096e-06/0.5982, allocations: 0 / 1.506 GB, free: 8.441 MB / 1.201 GB
Notification: Performance of simCode: created simulation system equations: time 0.0004745/0.5987, allocations: 299.6 kB / 1.506 GB, free: 8.152 MB / 1.201 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001135/0.5998, allocations: 272.6 kB / 1.507 GB, free: 7.906 MB / 1.201 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008193/0.608, allocations: 5.613 MB / 1.512 GB, free: 2.168 MB / 1.201 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006424/0.6086, allocations: 0.9837 MB / 1.513 GB, free: 1.16 MB / 1.201 GB
Notification: Performance of simCode: alias equations: time 0.000736/0.6094, allocations: 254.5 kB / 1.513 GB, free: 0.9062 MB / 1.201 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005033/0.6099, allocations: 331.3 kB / 1.514 GB, free: 0.5859 MB / 1.201 GB
Notification: Performance of SimCode: time 9.12e-07/0.6099, allocations: 4 kB / 1.514 GB, free: 0.582 MB / 1.201 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05537/0.6652, allocations: 19.57 MB / 1.533 GB, free: 13.2 MB / 1.232 GB
Notification: Performance of buildModelFMU: Generate platform static: time 11.75/12.42, allocations: 0 / 1.533 GB, free: 13.2 MB / 1.232 GB
"
[Timeout remaining time 287]
(rm -f Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary.pipe ; mkfifo Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary.pipe ; head -c 1048576 < Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary.pipe >> ../files/Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary.sim & python3 -m fmpy simulate  --output-file Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary_res.csv --start-time 3.09924e+07 --stop-time 3.186e+07 --timeout 400 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 3600 Buildings_12_Buildings_BoundaryConditions_WeatherData_Validation_DecemberToJanuary.fmu > Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary.pipe 2>&1) [Timeout 420.0]
diffSimulationResults("Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary_res.csv","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_BoundaryConditions_WeatherData_Validation_DecemberToJanuary.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300]
"Error: Could not read variable weaDat.weaBus.TDryBul in file Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary_res.csv.
Warning: Get data of variable weaDat.weaBus.TDryBul from file Buildings_12_Buildings.BoundaryConditions.WeatherData.Validation.DecemberToJanuary_res.csv failed!
"
[Timeout remaining time 300]
""

Variables in the reference:time,weaDat.weaBus.TDryBul,weaDat.weaBus.HDirNor,weaDat.weaBus.HDifHor

Variables in the result:time,weaDat.weaBus.HDifHor,weaDat.weaBus.HDirNor,weaDat.weaBus.HGloHor,weaDat.weaBus.HHorIR,weaDat.weaBus.TBlaSky
[Calling sys.exit(0), Time elapsed: 19.314155326999753]