Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot.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 0.001375/0.001375, allocations: 104.4 kB / 19.7 MB, free: 2.125 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 0.001978/0.001978, allocations: 214 kB / 22.99 MB, free: 4.945 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 1.456/1.456, allocations: 230.6 MB / 256.8 MB, free: 7.801 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 2.773/2.773, allocations: 476 MB / 0.7707 GB, free: 4.715 MB / 0.6231 GB
"
[Timeout remaining time 177]
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.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|chi_TEva.COP_nominal|chi_TEva.COP|chi_TEva.m1_flow|chi_TEva.m2_flow|chi_TEva.m1_flow_nominal|chi_TEva.m2_flow_nominal|chi_TEva.TCon_nominal|chi_TEva.TEva_nominal|chi_TEva.sta_b1.T|chi_TEva.sta_b2.T|chi_TEva.sta_a1.T|chi_TEva.sta_a2.T|chi_y.COP_nominal|chi_y.COP|chi_y.m1_flow_nominal|chi_y.m2_flow_nominal|chi_y.m2_flow|chi_y.m1_flow|chi_y.TCon_nominal|chi_y.TEva_nominal|chi_y.sta_a1.T|chi_y.sta_b1.T|chi_y.sta_a2.T|chi_y.sta_b2.T",fileNamePrefix="Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot")
translateModel(Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|chi_TEva.COP_nominal|chi_TEva.COP|chi_TEva.m1_flow|chi_TEva.m2_flow|chi_TEva.m1_flow_nominal|chi_TEva.m2_flow_nominal|chi_TEva.TCon_nominal|chi_TEva.TEva_nominal|chi_TEva.sta_b1.T|chi_TEva.sta_b2.T|chi_TEva.sta_a1.T|chi_TEva.sta_a2.T|chi_y.COP_nominal|chi_y.COP|chi_y.m1_flow_nominal|chi_y.m2_flow_nominal|chi_y.m2_flow|chi_y.m1_flow|chi_y.TCon_nominal|chi_y.TEva_nominal|chi_y.sta_a1.T|chi_y.sta_b1.T|chi_y.sta_a2.T|chi_y.sta_b2.T",fileNamePrefix="Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot") [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 0.002155/0.002155, allocations: 66.78 kB / 1.118 GB, free: 41.02 MB / 0.9044 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3925/0.3947, allocations: 170 MB / 1.284 GB, free: 11.9 MB / 0.9825 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot): time 0.1393/0.534, allocations: 121.6 MB / 1.403 GB, free: 1.871 MB / 1.092 GB
Notification: Performance of NFInst.instExpressions: time 0.04033/0.5743, allocations: 21.61 MB / 1.424 GB, free: 12.2 MB / 1.123 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.005841/0.5802, allocations: 174.5 kB / 1.424 GB, free: 12.03 MB / 1.123 GB
Notification: Performance of NFTyping.typeComponents: time 0.00524/0.5854, allocations: 1.483 MB / 1.425 GB, free: 10.54 MB / 1.123 GB
Notification: Performance of NFTyping.typeBindings: time 0.01417/0.5996, allocations: 4.352 MB / 1.43 GB, free: 6.168 MB / 1.123 GB
Notification: Performance of NFTyping.typeClassSections: time 0.006531/0.6061, allocations: 2.202 MB / 1.432 GB, free: 3.984 MB / 1.123 GB
Notification: Performance of NFFlatten.flatten: time 0.01097/0.6171, allocations: 6.586 MB / 1.438 GB, free: 13.38 MB / 1.139 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.003966/0.6211, allocations: 1.809 MB / 1.44 GB, free: 11.52 MB / 1.139 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.008054/0.6291, allocations: 2.908 MB / 1.443 GB, free: 8.602 MB / 1.139 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.004562/0.6337, allocations: 1.862 MB / 1.445 GB, free: 6.734 MB / 1.139 GB
Notification: Performance of NFPackage.collectConstants: time 0.000754/0.6344, allocations: 244 kB / 1.445 GB, free: 6.496 MB / 1.139 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.005118/0.6396, allocations: 1.598 MB / 1.446 GB, free: 4.895 MB / 1.139 GB
Notification: Performance of NFScalarize.scalarize: time 0.000871/0.6404, allocations: 0.6185 MB / 1.447 GB, free: 4.273 MB / 1.139 GB
Notification: Performance of NFVerifyModel.verify: time 0.002417/0.6428, allocations: 1.159 MB / 1.448 GB, free: 3.109 MB / 1.139 GB
Notification: Performance of NFConvertDAE.convert: time 0.008603/0.6514, allocations: 4.375 MB / 1.452 GB, free: 14.71 MB / 1.154 GB
Notification: Performance of FrontEnd - DAE generated: time 6.051e-06/0.6515, allocations: 0 / 1.452 GB, free: 14.71 MB / 1.154 GB
Notification: Performance of FrontEnd: time 1.203e-06/0.6515, allocations: 0 / 1.452 GB, free: 14.71 MB / 1.154 GB
Notification: Performance of Transformations before backend: time 7.618e-05/0.6515, allocations: 7.938 kB / 1.452 GB, free: 14.71 MB / 1.154 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 388
 * Number of variables: 388
Notification: Performance of Generate backend data structure: time 0.006957/0.6585, allocations: 3.195 MB / 1.455 GB, free: 11.44 MB / 1.154 GB
Notification: Performance of prepare preOptimizeDAE: time 5.438e-05/0.6585, allocations: 12.03 kB / 1.455 GB, free: 11.43 MB / 1.154 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004498/0.663, allocations: 0.8574 MB / 1.456 GB, free: 10.57 MB / 1.154 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.005474/0.6685, allocations: 2.257 MB / 1.459 GB, free: 8.227 MB / 1.154 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001345/0.6686, allocations: 123 kB / 1.459 GB, free: 8.105 MB / 1.154 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002804/0.6689, allocations: 164 kB / 1.459 GB, free: 7.945 MB / 1.154 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.004383/0.6733, allocations: 2.002 MB / 1.461 GB, free: 5.859 MB / 1.154 GB
Notification: Performance of preOpt findStateOrder (simulation): time 3.72e-05/0.6733, allocations: 4 kB / 1.461 GB, free: 5.855 MB / 1.154 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001469/0.6735, allocations: 60 kB / 1.461 GB, free: 5.797 MB / 1.154 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.667e-05/0.6735, allocations: 43.94 kB / 1.461 GB, free: 5.754 MB / 1.154 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004709/0.6782, allocations: 1.796 MB / 1.463 GB, free: 3.957 MB / 1.154 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 0.01264/0.6909, allocations: 6.154 MB / 1.469 GB, free: 13.67 MB / 1.17 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.004353/0.6952, allocations: 1.154 MB / 1.47 GB, free: 12.5 MB / 1.17 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.001196/0.6964, allocations: 438.8 kB / 1.47 GB, free: 12.06 MB / 1.17 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0006178/0.697, allocations: 155.9 kB / 1.47 GB, free: 11.91 MB / 1.17 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.299e-05/0.6971, allocations: 42.56 kB / 1.47 GB, free: 11.86 MB / 1.17 GB
Notification: Performance of pre-optimization done (n=76): time 4.468e-06/0.6971, allocations: 4 kB / 1.47 GB, free: 11.86 MB / 1.17 GB
Notification: Performance of matching and sorting (n=76): time 0.009178/0.7063, allocations: 2.148 MB / 1.472 GB, free: 9.691 MB / 1.17 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 6.526e-05/0.7064, allocations: 89.09 kB / 1.473 GB, free: 9.586 MB / 1.17 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003701/0.7101, allocations: 1.988 MB / 1.474 GB, free: 7.562 MB / 1.17 GB
Notification: Performance of collectPreVariables (initialization): time 0.0002118/0.7103, allocations: 45.7 kB / 1.475 GB, free: 7.512 MB / 1.17 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0009961/0.7113, allocations: 1.09 MB / 1.476 GB, free: 6.41 MB / 1.17 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0003381/0.7116, allocations: 277.6 kB / 1.476 GB, free: 6.137 MB / 1.17 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004493/0.7121, allocations: 262.7 kB / 1.476 GB, free: 5.875 MB / 1.17 GB
Notification: Performance of setup shared object (initialization): time 0.0001745/0.7122, allocations: 341.9 kB / 1.476 GB, free: 5.535 MB / 1.17 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.001708/0.7139, allocations: 0.5764 MB / 1.477 GB, free: 4.957 MB / 1.17 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.002534/0.7165, allocations: 1.611 MB / 1.479 GB, free: 3.035 MB / 1.17 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.003089/0.7196, allocations: 1.248 MB / 1.48 GB, free: 1.68 MB / 1.17 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.053e-05/0.7196, allocations: 4 kB / 1.48 GB, free: 1.676 MB / 1.17 GB
Notification: Performance of matching and sorting (n=133) (initialization): time 0.006687/0.7263, allocations: 1.979 MB / 1.482 GB, free: 15.68 MB / 1.186 GB
Notification: Performance of prepare postOptimizeDAE: time 3.547e-05/0.7263, allocations: 14.75 kB / 1.482 GB, free: 15.67 MB / 1.186 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.677e-05/0.7263, allocations: 8 kB / 1.482 GB, free: 15.66 MB / 1.186 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001893/0.7282, allocations: 0.4886 MB / 1.482 GB, free: 15.17 MB / 1.186 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001178/0.7294, allocations: 279.5 kB / 1.482 GB, free: 14.9 MB / 1.186 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002324/0.7317, allocations: 1.511 MB / 1.484 GB, free: 13.34 MB / 1.186 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002557/0.7343, allocations: 299.1 kB / 1.484 GB, free: 13.04 MB / 1.186 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001445/0.7344, allocations: 59.97 kB / 1.484 GB, free: 12.98 MB / 1.186 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 35
 * 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 (111):
 * Single equations (assignments): 109
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 2
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 0 systems
 * Non-linear torn systems (#iteration vars, #inner vars): 2 systems
   {(1,14), (1,8)}
Notification: Performance of prepare postOptimizeDAE: time 0.001079/0.7355, allocations: 457.5 kB / 1.485 GB, free: 12.53 MB / 1.186 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000445/0.7359, allocations: 206.7 kB / 1.485 GB, free: 12.32 MB / 1.186 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003658/0.7396, allocations: 1.475 MB / 1.486 GB, free: 10.84 MB / 1.186 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.061e-05/0.7396, allocations: 8 kB / 1.486 GB, free: 10.83 MB / 1.186 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 6.392e-06/0.7396, allocations: 0 / 1.486 GB, free: 10.83 MB / 1.186 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.306e-05/0.7396, allocations: 7.984 kB / 1.486 GB, free: 10.82 MB / 1.186 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.007535/0.7472, allocations: 3.172 MB / 1.489 GB, free: 7.562 MB / 1.186 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.21e-05/0.7472, allocations: 4 kB / 1.49 GB, free: 7.559 MB / 1.186 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006066/0.7478, allocations: 127.8 kB / 1.49 GB, free: 7.434 MB / 1.186 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.001656/0.7494, allocations: 493.1 kB / 1.49 GB, free: 6.945 MB / 1.186 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.715e-05/0.7495, allocations: 27.98 kB / 1.49 GB, free: 6.918 MB / 1.186 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002754/0.7523, allocations: 1.581 MB / 1.492 GB, free: 5.285 MB / 1.186 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.448e-06/0.7523, allocations: 7.938 kB / 1.492 GB, free: 5.277 MB / 1.186 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006212/0.7585, allocations: 1.895 MB / 1.494 GB, free: 3.316 MB / 1.186 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0013/0.7598, allocations: 376.1 kB / 1.494 GB, free: 2.949 MB / 1.186 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002588/0.76, allocations: 16.19 kB / 1.494 GB, free: 2.934 MB / 1.186 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001425/0.7615, allocations: 123.8 kB / 1.494 GB, free: 2.812 MB / 1.186 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001073/0.7616, allocations: 71.7 kB / 1.494 GB, free: 2.742 MB / 1.186 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.888e-05/0.7617, allocations: 39.97 kB / 1.494 GB, free: 2.703 MB / 1.186 GB
Notification: Performance of sorting global known variables: time 0.002566/0.7642, allocations: 1.396 MB / 1.495 GB, free: 1.289 MB / 1.186 GB
Notification: Performance of sort global known variables: time 1.01e-07/0.7642, allocations: 0 / 1.495 GB, free: 1.289 MB / 1.186 GB
Notification: Performance of remove unused functions: time 0.002405/0.7666, allocations: 0.7403 MB / 1.496 GB, free: 0.5469 MB / 1.186 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 14
 * 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 (62):
 * Single equations (assignments): 52
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 8
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 2
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 0 systems
 * Non-linear torn systems (#iteration vars, #inner vars): 2 systems
   {(1,16), (1,9)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.001154/0.7678, allocations: 0.5955 MB / 1.497 GB, free: 15.94 MB / 1.201 GB
Notification: Performance of simCode: created initialization part: time 0.004207/0.772, allocations: 1.307 MB / 1.498 GB, free: 14.63 MB / 1.201 GB
Notification: Performance of simCode: created event and clocks part: time 9.177e-06/0.772, allocations: 0 / 1.498 GB, free: 14.63 MB / 1.201 GB
Notification: Performance of simCode: created simulation system equations: time 0.002371/0.7744, allocations: 0.6583 MB / 1.499 GB, free: 13.98 MB / 1.201 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004362/0.7787, allocations: 0.8714 MB / 1.5 GB, free: 13.12 MB / 1.201 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007448/0.7862, allocations: 3.58 MB / 1.503 GB, free: 9.457 MB / 1.201 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001081/0.7873, allocations: 0.9155 MB / 1.504 GB, free: 8.508 MB / 1.201 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00068/0.7879, allocations: 159.3 kB / 1.504 GB, free: 8.352 MB / 1.201 GB
Notification: Performance of SimCode: time 1.463e-06/0.7879, allocations: 0 / 1.504 GB, free: 8.352 MB / 1.201 GB
Notification: Performance of Templates: time 0.08218/0.8701, allocations: 58.39 MB / 1.561 GB, free: 14.22 MB / 1.264 GB
"
[Timeout remaining time 299]
make -j1 -f Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot.makefile [Timeout 300]
(rm -f Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot.pipe ; mkfifo Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot.pipe ; head -c 1048576 < Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot.pipe >> ../files/Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot.sim & ./Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot  -abortSlowSimulation -alarm=400  -emit_protected -lv LOG_STATS > Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot.pipe 2>&1) [Timeout 400]
diffSimulationResults("Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_11.x/Buildings_Fluid_Chillers_Validation_CarnotVerifyEtaCarnot.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_11_Buildings.Fluid.Chillers.Validation.CarnotVerifyEtaCarnot.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: 17.29875534400344]