Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.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 0.001502/0.001502, allocations: 110.2 kB / 19.69 MB, free: 2.254 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 0.00172/0.00172, allocations: 217.3 kB / 23.01 MB, free: 4.566 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 1.348/1.348, allocations: 230.6 MB / 256.8 MB, free: 8.004 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 2.994/2.994, allocations: 0.505 GB / 0.8108 GB, free: 22.05 MB / 0.6231 GB " [Timeout remaining time 177] 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: translateModel(Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|pumFixDp.m_flow|pumFixM_flow.dp",fileNamePrefix="Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear") translateModel(Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|pumFixDp.m_flow|pumFixM_flow.dp",fileNamePrefix="Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear") [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 0.001897/0.001897, allocations: 67.39 kB / 1.178 GB, free: 16.83 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3112/0.3131, allocations: 180.2 MB / 1.354 GB, free: 7.961 MB / 1.045 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear): time 0.0621/0.3752, allocations: 59.86 MB / 1.413 GB, free: 11.89 MB / 1.107 GB Notification: Performance of NFInst.instExpressions: time 0.03224/0.4075, allocations: 20.15 MB / 1.432 GB, free: 7.688 MB / 1.123 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002953/0.4104, allocations: 119 kB / 1.432 GB, free: 7.57 MB / 1.123 GB Notification: Performance of NFTyping.typeComponents: time 0.005442/0.4159, allocations: 2.113 MB / 1.434 GB, free: 5.449 MB / 1.123 GB Notification: Performance of NFTyping.typeBindings: time 0.007508/0.4234, allocations: 3.15 MB / 1.437 GB, free: 2.285 MB / 1.123 GB Notification: Performance of NFTyping.typeClassSections: time 0.005557/0.4289, allocations: 2.429 MB / 1.44 GB, free: 15.87 MB / 1.139 GB Notification: Performance of NFFlatten.flatten: time 0.02162/0.4506, allocations: 14.97 MB / 1.454 GB, free: 0.875 MB / 1.139 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00271/0.4533, allocations: 1.491 MB / 1.456 GB, free: 15.34 MB / 1.154 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005103/0.4584, allocations: 2.308 MB / 1.458 GB, free: 13.03 MB / 1.154 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002758/0.4611, allocations: 1.646 MB / 1.46 GB, free: 11.38 MB / 1.154 GB Notification: Performance of NFPackage.collectConstants: time 0.0004403/0.4616, allocations: 212 kB / 1.46 GB, free: 11.17 MB / 1.154 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004754/0.4663, allocations: 2.511 MB / 1.462 GB, free: 8.656 MB / 1.154 GB Notification: Performance of NFScalarize.scalarize: time 0.000949/0.4673, allocations: 0.9305 MB / 1.463 GB, free: 7.723 MB / 1.154 GB Notification: Performance of NFVerifyModel.verify: time 0.00161/0.4689, allocations: 1.422 MB / 1.465 GB, free: 6.293 MB / 1.154 GB Notification: Performance of NFConvertDAE.convert: time 0.006473/0.4754, allocations: 4.776 MB / 1.469 GB, free: 1.5 MB / 1.154 GB Notification: Performance of FrontEnd - DAE generated: time 4.148e-06/0.4754, allocations: 0 / 1.469 GB, free: 1.5 MB / 1.154 GB Notification: Performance of FrontEnd: time 1.783e-06/0.4754, allocations: 0 / 1.469 GB, free: 1.5 MB / 1.154 GB Notification: Performance of Transformations before backend: time 4.954e-05/0.4754, allocations: 0 / 1.469 GB, free: 1.5 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: 266 * Number of variables: 266 Notification: Performance of Generate backend data structure: time 0.005605/0.481, allocations: 3.298 MB / 1.473 GB, free: 14.14 MB / 1.17 GB Notification: Performance of prepare preOptimizeDAE: time 3.901e-05/0.4811, allocations: 8.031 kB / 1.473 GB, free: 14.13 MB / 1.17 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005206/0.4863, allocations: 0.9503 MB / 1.474 GB, free: 13.18 MB / 1.17 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.007729/0.494, allocations: 3.508 MB / 1.477 GB, free: 9.598 MB / 1.17 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.356e-05/0.4941, allocations: 98.03 kB / 1.477 GB, free: 9.5 MB / 1.17 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000201/0.4943, allocations: 116 kB / 1.477 GB, free: 9.387 MB / 1.17 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002916/0.4972, allocations: 1.522 MB / 1.479 GB, free: 7.793 MB / 1.17 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.305e-05/0.4972, allocations: 0 / 1.479 GB, free: 7.793 MB / 1.17 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001097/0.4973, allocations: 44 kB / 1.479 GB, free: 7.75 MB / 1.17 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.393e-05/0.4974, allocations: 24 kB / 1.479 GB, free: 7.727 MB / 1.17 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003161/0.5005, allocations: 1.347 MB / 1.48 GB, free: 6.379 MB / 1.17 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 0.01024/0.5108, allocations: 7.383 MB / 1.487 GB, free: 14.5 MB / 1.186 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002587/0.5133, allocations: 0.9832 MB / 1.488 GB, free: 13.5 MB / 1.186 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001145/0.5145, allocations: 490 kB / 1.489 GB, free: 13.02 MB / 1.186 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003545/0.518, allocations: 1.96 MB / 1.491 GB, free: 11.04 MB / 1.186 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.505e-05/0.5181, allocations: 47 kB / 1.491 GB, free: 10.98 MB / 1.186 GB Notification: Performance of pre-optimization done (n=58): time 2.084e-06/0.5181, allocations: 0 / 1.491 GB, free: 10.98 MB / 1.186 GB Notification: Performance of matching and sorting (n=58): time 0.004454/0.5225, allocations: 1.64 MB / 1.492 GB, free: 9.336 MB / 1.186 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.946e-05/0.5226, allocations: 63.91 kB / 1.492 GB, free: 9.262 MB / 1.186 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003566/0.5261, allocations: 2.667 MB / 1.495 GB, free: 6.578 MB / 1.186 GB Notification: Performance of collectPreVariables (initialization): time 0.0001127/0.5263, allocations: 45.7 kB / 1.495 GB, free: 6.527 MB / 1.186 GB Notification: Performance of collectInitialEqns (initialization): time 0.0009364/0.5272, allocations: 1.054 MB / 1.496 GB, free: 5.465 MB / 1.186 GB Notification: Performance of collectInitialBindings (initialization): time 0.000226/0.5274, allocations: 226.1 kB / 1.496 GB, free: 5.242 MB / 1.186 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0005936/0.528, allocations: 447.2 kB / 1.497 GB, free: 4.801 MB / 1.186 GB Notification: Performance of setup shared object (initialization): time 0.0001198/0.5281, allocations: 309.1 kB / 1.497 GB, free: 4.496 MB / 1.186 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002012/0.5301, allocations: 1.16 MB / 1.498 GB, free: 3.332 MB / 1.186 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002378/0.5325, allocations: 1.582 MB / 1.5 GB, free: 1.602 MB / 1.186 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003992/0.5365, allocations: 2.488 MB / 1.502 GB, free: 15 MB / 1.201 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.586e-06/0.5365, allocations: 4 kB / 1.502 GB, free: 15 MB / 1.201 GB Notification: Performance of matching and sorting (n=234) (initialization): time 0.005354/0.5419, allocations: 3.082 MB / 1.505 GB, free: 11.9 MB / 1.201 GB Notification: Performance of prepare postOptimizeDAE: time 2.195e-05/0.5419, allocations: 8 kB / 1.505 GB, free: 11.89 MB / 1.201 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.541e-05/0.5419, allocations: 8 kB / 1.505 GB, free: 11.89 MB / 1.201 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004142/0.5423, allocations: 108.8 kB / 1.505 GB, free: 11.78 MB / 1.201 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001362/0.5437, allocations: 347.6 kB / 1.505 GB, free: 11.44 MB / 1.201 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005173/0.5442, allocations: 0.6148 MB / 1.506 GB, free: 10.8 MB / 1.201 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001742/0.5459, allocations: 242.7 kB / 1.506 GB, free: 10.56 MB / 1.201 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001701/0.5461, allocations: 99.95 kB / 1.506 GB, free: 10.46 MB / 1.201 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002536/0.5486, allocations: 1.515 MB / 1.508 GB, free: 8.941 MB / 1.201 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002079/0.5507, allocations: 1.387 MB / 1.509 GB, free: 7.402 MB / 1.201 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003294/0.554, allocations: 2.109 MB / 1.511 GB, free: 5.18 MB / 1.201 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.207e-06/0.554, allocations: 4 kB / 1.511 GB, free: 5.176 MB / 1.201 GB Notification: Performance of matching and sorting (n=234) (initialization_lambda0): time 0.004919/0.5589, allocations: 2.71 MB / 1.514 GB, free: 2.457 MB / 1.201 GB Notification: Performance of prepare postOptimizeDAE: time 1.865e-05/0.559, allocations: 11.94 kB / 1.514 GB, free: 2.445 MB / 1.201 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.345e-05/0.559, allocations: 8 kB / 1.514 GB, free: 2.438 MB / 1.201 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000495/0.5595, allocations: 125.2 kB / 1.514 GB, free: 2.312 MB / 1.201 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001221/0.5607, allocations: 323.5 kB / 1.514 GB, free: 1.996 MB / 1.201 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004146/0.5648, allocations: 2.734 MB / 1.517 GB, free: 15.07 MB / 1.217 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001799/0.5666, allocations: 191.9 kB / 1.517 GB, free: 14.88 MB / 1.217 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001533/0.5668, allocations: 83.95 kB / 1.517 GB, free: 14.8 MB / 1.217 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 37 * 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 (164): * Single equations (assignments): 159 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,4)} Notification: Performance of prepare postOptimizeDAE: time 0.0003919/0.5672, allocations: 255.8 kB / 1.518 GB, free: 14.54 MB / 1.217 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003705/0.5676, allocations: 246.3 kB / 1.518 GB, free: 14.3 MB / 1.217 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003743/0.5713, allocations: 1.604 MB / 1.519 GB, free: 12.68 MB / 1.217 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.679e-05/0.5713, allocations: 12 kB / 1.519 GB, free: 12.67 MB / 1.217 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.204e-06/0.5713, allocations: 0 / 1.519 GB, free: 12.67 MB / 1.217 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.748e-06/0.5713, allocations: 3.984 kB / 1.519 GB, free: 12.67 MB / 1.217 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005837/0.5772, allocations: 3.141 MB / 1.522 GB, free: 9.441 MB / 1.217 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.18e-06/0.5772, allocations: 0 / 1.522 GB, free: 9.441 MB / 1.217 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008702/0.578, allocations: 172 kB / 1.523 GB, free: 9.273 MB / 1.217 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002255/0.5783, allocations: 64.81 kB / 1.523 GB, free: 9.207 MB / 1.217 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.777e-05/0.5783, allocations: 31.97 kB / 1.523 GB, free: 9.176 MB / 1.217 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0004358/0.5788, allocations: 0.5991 MB / 1.523 GB, free: 8.551 MB / 1.217 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.257e-06/0.5788, allocations: 4.031 kB / 1.523 GB, free: 8.547 MB / 1.217 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003234/0.582, allocations: 1.557 MB / 1.525 GB, free: 6.941 MB / 1.217 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008868/0.5829, allocations: 381.9 kB / 1.525 GB, free: 6.566 MB / 1.217 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002442/0.5831, allocations: 15.98 kB / 1.525 GB, free: 6.551 MB / 1.217 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001068/0.5842, allocations: 75.92 kB / 1.525 GB, free: 6.477 MB / 1.217 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001143/0.5843, allocations: 60.48 kB / 1.525 GB, free: 6.418 MB / 1.217 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.929e-05/0.5844, allocations: 43.97 kB / 1.525 GB, free: 6.375 MB / 1.217 GB Notification: Performance of sorting global known variables: time 0.002653/0.5871, allocations: 1.784 MB / 1.527 GB, free: 4.59 MB / 1.217 GB Notification: Performance of sort global known variables: time 1.6e-07/0.5871, allocations: 0 / 1.527 GB, free: 4.59 MB / 1.217 GB Notification: Performance of remove unused functions: time 0.003023/0.5901, allocations: 1.263 MB / 1.528 GB, free: 3.324 MB / 1.217 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 9 * 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 (69): * Single equations (assignments): 60 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 8 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001474/0.5916, allocations: 0.7529 MB / 1.529 GB, free: 2.562 MB / 1.217 GB Notification: Performance of simCode: created initialization part: time 0.006246/0.5978, allocations: 3.233 MB / 1.532 GB, free: 15.32 MB / 1.232 GB Notification: Performance of simCode: created event and clocks part: time 4.058e-06/0.5978, allocations: 0 / 1.532 GB, free: 15.32 MB / 1.232 GB Notification: Performance of simCode: created simulation system equations: time 0.001382/0.5992, allocations: 0.5674 MB / 1.533 GB, free: 14.75 MB / 1.232 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004276/0.6035, allocations: 1.233 MB / 1.534 GB, free: 13.57 MB / 1.232 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00744/0.6109, allocations: 4.332 MB / 1.538 GB, free: 9.16 MB / 1.232 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001395/0.6123, allocations: 1.705 MB / 1.54 GB, free: 7.426 MB / 1.232 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007092/0.613, allocations: 211.3 kB / 1.54 GB, free: 7.219 MB / 1.232 GB Notification: Performance of SimCode: time 9.12e-07/0.613, allocations: 4 kB / 1.54 GB, free: 7.215 MB / 1.232 GB Notification: Performance of Templates: time 0.07533/0.6883, allocations: 55.57 MB / 1.594 GB, free: 15.86 MB / 1.295 GB " [Timeout remaining time 299] make -j1 -f Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.makefile [Timeout 300] (rm -f Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe ; mkfifo Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe >> ../files/Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.sim & ./Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear -abortSlowSimulation -alarm=800 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.pipe 2>&1) [Timeout 800] diffSimulationResults("Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_Movers_Validation_SpeedControlled_y_linear.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear.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: 18.902623644011328]