Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe.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 0.001062/0.001062, allocations: 73.97 kB / 20.66 MB, free: 3.844 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 0.001205/0.001205, allocations: 169 kB / 24.06 MB, free: 456 kB / 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 0.982/0.982, allocations: 177.1 MB / 204.5 MB, free: 5.512 MB / 186.7 MB
"
[Timeout remaining time 179]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo", uses=false) [Timeout 180]
"[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-545:108:writable] Warning: Lexer treating \\ as \\\\, since \\e is not a valid Modelica escape sequence.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-545:116:writable] Warning: Lexer treating \\ as \\\\, since \\< is not a valid Modelica escape sequence.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Media/Refrigerants/R410A/package.order:0:0-0:0:readonly] Warning: Found duplicate names in package.order file: A, B, C.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Media/Refrigerants/R410A/package.mo:2:1-70:10:writable] Warning: C was referenced in the package.order file, but was not found in package.mo, C/package.mo or C.mo.
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo): time 0.7621/0.7621, allocations: 154.6 MB / 415.6 MB, free: 0.5156 MB / 378.7 MB
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/Cryptographics/BaseClasses/sha.mo:2:1-19:8:writable] Warning: External function annotation should occur on the external-clause, not on the function.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/File/sha2.mo:2:1-9:9:writable] Warning: External function annotation should occur on the external-clause, not on the function.
"
[Timeout remaining time 179]
Using package IDEAS with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/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(IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe")
translateModel(IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe") [Timeout 660]
"Notification: Performance of FrontEnd - loaded program: time 2.094e-06/2.094e-06, allocations: 0 / 0.5216 GB, free: 1.801 MB / 490.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 3.561e-05/3.77e-05, allocations: 2.312 kB / 0.5216 GB, free: 1.797 MB / 490.7 MB
Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe): time 0.00315/0.003187, allocations: 1.406 MB / 0.523 GB, free: 408 kB / 490.7 MB
Notification: Performance of NFInst.instExpressions: time 0.002089/0.005276, allocations: 1.082 MB / 0.5241 GB, free: 15.31 MB / 0.4948 GB
Notification: Performance of NFInst.updateImplicitVariability: time 5.981e-05/0.005336, allocations: 5.031 kB / 0.5241 GB, free: 15.31 MB / 0.4948 GB
Notification: Performance of NFTyping.typeComponents: time 2.657e-05/0.005363, allocations: 0 / 0.5241 GB, free: 15.31 MB / 0.4948 GB
Notification: Performance of NFTyping.typeBindings: time 7.603e-05/0.005439, allocations: 7.875 kB / 0.5241 GB, free: 15.3 MB / 0.4948 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0008831/0.006322, allocations: 229.6 kB / 0.5243 GB, free: 15.08 MB / 0.4948 GB
Notification: Performance of NFFlatten.flatten: time 7.864e-05/0.0064, allocations: 35.84 kB / 0.5243 GB, free: 15.04 MB / 0.4948 GB
Notification: Performance of NFFlatten.resolveConnections: time 5.295e-05/0.006453, allocations: 0.6875 kB / 0.5243 GB, free: 15.04 MB / 0.4948 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0001405/0.006594, allocations: 25.2 kB / 0.5243 GB, free: 15.02 MB / 0.4948 GB
Notification: Performance of NFSimplifyModel.simplify: time 7.06e-05/0.006664, allocations: 7.984 kB / 0.5244 GB, free: 15.01 MB / 0.4948 GB
Notification: Performance of NFPackage.collectConstants: time 1.527e-05/0.00668, allocations: 0 / 0.5244 GB, free: 15.01 MB / 0.4948 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0006583/0.007338, allocations: 408.5 kB / 0.5247 GB, free: 14.61 MB / 0.4948 GB
Notification: Performance of NFScalarize.scalarize: time 2.265e-05/0.007361, allocations: 11.94 kB / 0.5248 GB, free: 14.6 MB / 0.4948 GB
Notification: Performance of NFVerifyModel.verify: time 2.617e-05/0.007387, allocations: 4 kB / 0.5248 GB, free: 14.6 MB / 0.4948 GB
Notification: Performance of NFConvertDAE.convert: time 0.0004191/0.007806, allocations: 248.1 kB / 0.525 GB, free: 14.36 MB / 0.4948 GB
Notification: Performance of FrontEnd - DAE generated: time 4.388e-06/0.00781, allocations: 0 / 0.525 GB, free: 14.36 MB / 0.4948 GB
Notification: Performance of FrontEnd: time 3.026e-06/0.007813, allocations: 4.828 kB / 0.525 GB, free: 14.35 MB / 0.4948 GB
Notification: Performance of Transformations before backend: time 6.002e-06/0.007819, allocations: 0 / 0.525 GB, free: 14.35 MB / 0.4948 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 4
 * Number of variables: 4
Notification: Performance of Generate backend data structure: time 0.0005171/0.008336, allocations: 422.5 kB / 0.5254 GB, free: 13.91 MB / 0.4948 GB
Notification: Performance of prepare preOptimizeDAE: time 4.559e-05/0.008382, allocations: 12.03 kB / 0.5254 GB, free: 13.89 MB / 0.4948 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 3.717e-05/0.008419, allocations: 0.9375 kB / 0.5254 GB, free: 13.89 MB / 0.4948 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0001009/0.00852, allocations: 112.6 kB / 0.5255 GB, free: 13.76 MB / 0.4948 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.222e-05/0.008532, allocations: 384 / 0.5255 GB, free: 13.76 MB / 0.4948 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 8.936e-06/0.008541, allocations: 8.375 kB / 0.5255 GB, free: 13.75 MB / 0.4948 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 8.13e-05/0.008623, allocations: 34.25 kB / 0.5256 GB, free: 13.71 MB / 0.4948 GB
Notification: Performance of preOpt findStateOrder (simulation): time 7.083e-06/0.00863, allocations: 0.875 kB / 0.5256 GB, free: 13.71 MB / 0.4948 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.626e-06/0.008638, allocations: 384 / 0.5256 GB, free: 13.71 MB / 0.4948 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.941e-06/0.008644, allocations: 5.125 kB / 0.5256 GB, free: 13.71 MB / 0.4948 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 2.817e-05/0.008672, allocations: 15.92 kB / 0.5256 GB, free: 13.69 MB / 0.4948 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0001372/0.00881, allocations: 101.2 kB / 0.5257 GB, free: 13.57 MB / 0.4948 GB
Notification: Performance of preOpt comSubExp (simulation): time 7.253e-05/0.008882, allocations: 39.66 kB / 0.5257 GB, free: 13.52 MB / 0.4948 GB
Notification: Performance of preOpt resolveLoops (simulation): time 2.162e-05/0.008904, allocations: 13.22 kB / 0.5257 GB, free: 13.5 MB / 0.4948 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.000331/0.009235, allocations: 98.27 kB / 0.5258 GB, free: 13.41 MB / 0.4948 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.457e-05/0.009259, allocations: 38.02 kB / 0.5259 GB, free: 13.36 MB / 0.4948 GB
Notification: Performance of pre-optimization done (n=4): time 1.783e-06/0.009261, allocations: 0 / 0.5259 GB, free: 13.36 MB / 0.4948 GB
Notification: Performance of matching and sorting (n=4): time 0.0001504/0.009412, allocations: 62.84 kB / 0.5259 GB, free: 13.29 MB / 0.4948 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.319e-05/0.009445, allocations: 51.41 kB / 0.526 GB, free: 13.23 MB / 0.4948 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 7.929e-05/0.009524, allocations: 170.6 kB / 0.5261 GB, free: 13.05 MB / 0.4948 GB
Notification: Performance of collectPreVariables (initialization): time 1.054e-05/0.009535, allocations: 25.7 kB / 0.5262 GB, free: 13.02 MB / 0.4948 GB
Notification: Performance of collectInitialEqns (initialization): time 4.301e-05/0.009578, allocations: 129.9 kB / 0.5263 GB, free: 12.89 MB / 0.4948 GB
Notification: Performance of collectInitialBindings (initialization): time 4.679e-05/0.009624, allocations: 23.83 kB / 0.5263 GB, free: 12.86 MB / 0.4948 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 3.305e-05/0.009657, allocations: 27.3 kB / 0.5263 GB, free: 12.83 MB / 0.4948 GB
Notification: Performance of setup shared object (initialization): time 0.0001401/0.009798, allocations: 492.1 kB / 0.5268 GB, free: 12.34 MB / 0.4948 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 1.607e-05/0.009814, allocations: 4 kB / 0.5268 GB, free: 12.33 MB / 0.4948 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 1.192e-05/0.009825, allocations: 4 kB / 0.5268 GB, free: 12.33 MB / 0.4948 GB
Notification: Performance of analyzeInitialSystem (initialization): time 3.785e-05/0.009863, allocations: 27.59 kB / 0.5268 GB, free: 12.3 MB / 0.4948 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.873e-06/0.009865, allocations: 0 / 0.5268 GB, free: 12.3 MB / 0.4948 GB
Notification: Performance of matching and sorting (n=4) (initialization): time 7.675e-05/0.009942, allocations: 49.69 kB / 0.5269 GB, free: 12.24 MB / 0.4948 GB
Notification: Performance of prepare postOptimizeDAE: time 1.573e-05/0.009958, allocations: 6.438 kB / 0.5269 GB, free: 12.24 MB / 0.4948 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.089e-06/0.009963, allocations: 0 / 0.5269 GB, free: 12.24 MB / 0.4948 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.002e-05/0.009973, allocations: 0 / 0.5269 GB, free: 12.24 MB / 0.4948 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 8.397e-05/0.01006, allocations: 12 kB / 0.5269 GB, free: 12.23 MB / 0.4948 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.298e-06/0.01006, allocations: 320 / 0.5269 GB, free: 12.23 MB / 0.4948 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 1.523e-05/0.01008, allocations: 7.938 kB / 0.5269 GB, free: 12.22 MB / 0.4948 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.639e-06/0.01008, allocations: 1.25 kB / 0.5269 GB, free: 12.22 MB / 0.4948 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 1
 * 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 (4):
 * Single equations (assignments): 4
 * 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 7.7e-05/0.01016, allocations: 156.6 kB / 0.5271 GB, free: 12.05 MB / 0.4948 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 9.588e-06/0.01017, allocations: 7.953 kB / 0.5271 GB, free: 12.05 MB / 0.4948 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001046/0.01027, allocations: 58.5 kB / 0.5271 GB, free: 11.98 MB / 0.4948 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.314e-06/0.01027, allocations: 0 / 0.5271 GB, free: 11.98 MB / 0.4948 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 2.855e-06/0.01028, allocations: 5.156 kB / 0.5271 GB, free: 11.98 MB / 0.4948 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.21e-06/0.01028, allocations: 3.938 kB / 0.5271 GB, free: 11.98 MB / 0.4948 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 8.092e-05/0.01036, allocations: 97.25 kB / 0.5272 GB, free: 11.86 MB / 0.4948 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.31e-07/0.01036, allocations: 0.5 kB / 0.5272 GB, free: 11.86 MB / 0.4948 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 4.28e-05/0.01041, allocations: 14.88 kB / 0.5272 GB, free: 11.84 MB / 0.4948 GB
Notification: Performance of postOpt tearingSystem (simulation): time 2.034e-06/0.01041, allocations: 0 / 0.5272 GB, free: 11.84 MB / 0.4948 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.931e-06/0.01042, allocations: 4 kB / 0.5272 GB, free: 11.84 MB / 0.4948 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.824e-06/0.01042, allocations: 8 kB / 0.5272 GB, free: 11.83 MB / 0.4948 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.883e-06/0.01042, allocations: 0 / 0.5272 GB, free: 11.83 MB / 0.4948 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0002098/0.01063, allocations: 88.3 kB / 0.5273 GB, free: 11.72 MB / 0.4948 GB
Notification: Performance of postOpt removeConstants (simulation): time 1.56e-05/0.01064, allocations: 7.953 kB / 0.5273 GB, free: 11.71 MB / 0.4948 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.979e-06/0.01065, allocations: 4 kB / 0.5273 GB, free: 11.71 MB / 0.4948 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 1.084e-05/0.01066, allocations: 3.031 kB / 0.5273 GB, free: 11.71 MB / 0.4948 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 1.579e-05/0.01068, allocations: 4 kB / 0.5273 GB, free: 11.71 MB / 0.4948 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.447e-06/0.01068, allocations: 0 / 0.5273 GB, free: 11.71 MB / 0.4948 GB
Notification: Performance of sorting global known variables: time 4.826e-05/0.01073, allocations: 135.1 kB / 0.5275 GB, free: 11.57 MB / 0.4948 GB
Notification: Performance of sort global known variables: time 5e-08/0.01073, allocations: 0 / 0.5275 GB, free: 11.57 MB / 0.4948 GB
Notification: Performance of remove unused functions: time 0.0001732/0.01091, allocations: 43.81 kB / 0.5275 GB, free: 11.53 MB / 0.4948 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * 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 simulation (4):
 * Single equations (assignments): 4
 * 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 0.0002291/0.01113, allocations: 172.3 kB / 0.5277 GB, free: 11.35 MB / 0.4948 GB
Notification: Performance of simCode: created initialization part: time 7.343e-05/0.01121, allocations: 23.62 kB / 0.5277 GB, free: 11.32 MB / 0.4948 GB
Notification: Performance of simCode: created event and clocks part: time 1.883e-06/0.01121, allocations: 3.938 kB / 0.5277 GB, free: 11.32 MB / 0.4948 GB
Notification: Performance of simCode: created simulation system equations: time 1.283e-05/0.01122, allocations: 16 kB / 0.5277 GB, free: 11.3 MB / 0.4948 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0001564/0.01138, allocations: 12.73 kB / 0.5277 GB, free: 11.29 MB / 0.4948 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0002649/0.01164, allocations: 152.6 kB / 0.5279 GB, free: 11.12 MB / 0.4948 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 3.01e-05/0.01167, allocations: 51.36 kB / 0.5279 GB, free: 11.05 MB / 0.4948 GB
Notification: Performance of simCode: alias equations: time 3.208e-05/0.01171, allocations: 12.94 kB / 0.5279 GB, free: 11.04 MB / 0.4948 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 5.487e-05/0.01176, allocations: 74.2 kB / 0.528 GB, free: 10.96 MB / 0.4948 GB
Notification: Performance of SimCode: time 8.02e-07/0.01176, allocations: 0 / 0.528 GB, free: 10.96 MB / 0.4948 GB
Notification: Performance of Templates: time 0.003532/0.01529, allocations: 1.445 MB / 0.5294 GB, free: 9.656 MB / 0.4948 GB
"
[Timeout remaining time 660]
make -j1 -f IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe.makefile [Timeout 660]
(rm -f IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe.pipe ; mkfifo IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe.pipe >> ../files/IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe.sim & ./IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe -abortSlowSimulation -alarm=240  -lv LOG_STATS > IDEAS_IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.ConvectionResistanceCircularPipe.pipe 2>&1) [Timeout 240]
[Calling sys.exit(0), Time elapsed: 3.956814388744533]