Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001678/0.001678, allocations: 118.7 kB / 17.13 MB, free: 5.758 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002279/0.002279, allocations: 193.2 kB / 20.08 MB, free: 2.848 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.46/1.46, allocations: 225.6 MB / 248.5 MB, free: 3.648 MB / 190.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.x/package.mo): time 2.529/2.529, allocations: 443.5 MB / 0.7293 GB, free: 14.5 MB / 0.5763 GB " [Timeout remaining time 177] Using package Buildings with version 10.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.x/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: translateModel(Buildings.Fluid.Movers.Validation.Pump_stratos,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|gain.u|floMacSta.dpMachine|floMacDyn.dpMachine|floMacSta.VMachine_flow|floMacDyn.VMachine_flow",fileNamePrefix="Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos") translateModel(Buildings.Fluid.Movers.Validation.Pump_stratos,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|gain.u|floMacSta.dpMachine|floMacDyn.dpMachine|floMacSta.VMachine_flow|floMacDyn.VMachine_flow",fileNamePrefix="Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos") [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 0.003121/0.003121, allocations: 71.89 kB / 1.057 GB, free: 1.973 MB / 0.795 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3714/0.3745, allocations: 160.7 MB / 1.214 GB, free: 0.9414 MB / 0.9513 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Validation.Pump_stratos): time 0.7867/1.161, allocations: 104 MB / 1.316 GB, free: 9.621 MB / 1.014 GB Notification: Performance of NFInst.instExpressions: time 0.03895/1.2, allocations: 20.72 MB / 1.336 GB, free: 10.95 MB / 1.029 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.005535/1.206, allocations: 91.28 kB / 1.336 GB, free: 10.92 MB / 1.029 GB Notification: Performance of NFTyping.typeComponents: time 0.008763/1.214, allocations: 2.332 MB / 1.338 GB, free: 9.863 MB / 1.029 GB Notification: Performance of NFTyping.typeBindings: time 0.0121/1.227, allocations: 3.266 MB / 1.341 GB, free: 7.969 MB / 1.029 GB Notification: Performance of NFTyping.typeClassSections: time 0.008037/1.235, allocations: 2.369 MB / 1.344 GB, free: 6.707 MB / 1.029 GB Notification: Performance of NFFlatten.flatten: time 0.03358/1.268, allocations: 17.42 MB / 1.361 GB, free: 0.6289 MB / 1.029 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004494/1.273, allocations: 1.644 MB / 1.362 GB, free: 15.43 MB / 1.045 GB Notification: Performance of NFEvalConstants.evaluate: time 0.008128/1.281, allocations: 2.485 MB / 1.365 GB, free: 13.94 MB / 1.045 GB Notification: Performance of NFSimplifyModel.simplify: time 0.005291/1.286, allocations: 2.108 MB / 1.367 GB, free: 12.58 MB / 1.045 GB Notification: Performance of NFPackage.collectConstants: time 0.00154/1.288, allocations: 282.7 kB / 1.367 GB, free: 12.58 MB / 1.045 GB Notification: Performance of NFFlatten.collectFunctions: time 0.007285/1.295, allocations: 2.35 MB / 1.369 GB, free: 11.37 MB / 1.045 GB Notification: Performance of NFScalarize.scalarize: time 0.002359/1.297, allocations: 1.406 MB / 1.371 GB, free: 10.43 MB / 1.045 GB Notification: Performance of NFVerifyModel.verify: time 0.005455/1.303, allocations: 2.005 MB / 1.373 GB, free: 9.047 MB / 1.045 GB Notification: Performance of NFConvertDAE.convert: time 0.01393/1.317, allocations: 6.204 MB / 1.379 GB, free: 4.812 MB / 1.045 GB Notification: Performance of FrontEnd - DAE generated: time 7.323e-06/1.317, allocations: 2.688 kB / 1.379 GB, free: 4.812 MB / 1.045 GB Notification: Performance of FrontEnd: time 2.064e-06/1.317, allocations: 0 / 1.379 GB, free: 4.812 MB / 1.045 GB Notification: Performance of Transformations before backend: time 0.0002179/1.317, allocations: 0 / 1.379 GB, free: 4.812 MB / 1.045 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 296 * Number of variables: 296 Notification: Performance of Generate backend data structure: time 0.01464/1.331, allocations: 4.636 MB / 1.383 GB, free: 1.387 MB / 1.045 GB Notification: Performance of prepare preOptimizeDAE: time 5.009e-05/1.332, allocations: 8.344 kB / 1.383 GB, free: 1.387 MB / 1.045 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00664/1.338, allocations: 1.065 MB / 1.384 GB, free: 0.8906 MB / 1.045 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01398/1.352, allocations: 5.628 MB / 1.39 GB, free: 13.27 MB / 1.061 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001645/1.352, allocations: 106 kB / 1.39 GB, free: 13.22 MB / 1.061 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0006108/1.353, allocations: 143.7 kB / 1.39 GB, free: 13.18 MB / 1.061 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005002/1.358, allocations: 1.949 MB / 1.392 GB, free: 11.16 MB / 1.061 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.968e-05/1.358, allocations: 4 kB / 1.392 GB, free: 11.16 MB / 1.061 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002029/1.358, allocations: 51.94 kB / 1.392 GB, free: 11.11 MB / 1.061 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.466e-05/1.358, allocations: 39.94 kB / 1.392 GB, free: 11.07 MB / 1.061 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004057/1.362, allocations: 1.43 MB / 1.394 GB, free: 9.629 MB / 1.061 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 0.01701/1.379, allocations: 9.023 MB / 1.402 GB, free: 52 kB / 1.061 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003704/1.383, allocations: 1.188 MB / 1.403 GB, free: 14.86 MB / 1.076 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001669/1.385, allocations: 0.6347 MB / 1.404 GB, free: 14.21 MB / 1.076 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 evalFunc (simulation): time 0.006396/1.391, allocations: 3.158 MB / 1.407 GB, free: 10.87 MB / 1.076 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.471e-05/1.391, allocations: 47.11 kB / 1.407 GB, free: 10.82 MB / 1.076 GB Notification: Performance of pre-optimization done (n=61): time 2.294e-06/1.391, allocations: 0 / 1.407 GB, free: 10.82 MB / 1.076 GB Notification: Performance of matching and sorting (n=61): time 0.008229/1.399, allocations: 2.467 MB / 1.41 GB, free: 8.301 MB / 1.076 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.891e-05/1.399, allocations: 63.91 kB / 1.41 GB, free: 8.227 MB / 1.076 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.009007/1.408, allocations: 4.272 MB / 1.414 GB, free: 3.938 MB / 1.076 GB Notification: Performance of collectPreVariables (initialization): time 0.0003807/1.409, allocations: 45.7 kB / 1.414 GB, free: 3.887 MB / 1.076 GB Notification: Performance of collectInitialEqns (initialization): time 0.001924/1.411, allocations: 1.524 MB / 1.415 GB, free: 2.352 MB / 1.076 GB Notification: Performance of collectInitialBindings (initialization): time 0.0004769/1.411, allocations: 242 kB / 1.416 GB, free: 2.113 MB / 1.076 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001214/1.412, allocations: 0.4918 MB / 1.416 GB, free: 1.613 MB / 1.076 GB Notification: Performance of setup shared object (initialization): time 0.0001358/1.413, allocations: 301.1 kB / 1.416 GB, free: 1.316 MB / 1.076 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002953/1.415, allocations: 1.559 MB / 1.418 GB, free: 15.75 MB / 1.092 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003522/1.419, allocations: 2.202 MB / 1.42 GB, free: 13.3 MB / 1.092 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.005979/1.425, allocations: 3.457 MB / 1.423 GB, free: 9.645 MB / 1.092 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.706e-05/1.425, allocations: 8 kB / 1.423 GB, free: 9.637 MB / 1.092 GB Notification: Performance of matching and sorting (n=276) (initialization): time 0.009293/1.434, allocations: 4.458 MB / 1.428 GB, free: 5.16 MB / 1.092 GB Notification: Performance of prepare postOptimizeDAE: time 4.228e-05/1.434, allocations: 12 kB / 1.428 GB, free: 5.148 MB / 1.092 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.513e-05/1.434, allocations: 15.94 kB / 1.428 GB, free: 5.133 MB / 1.092 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001957/1.436, allocations: 0.7656 MB / 1.429 GB, free: 4.367 MB / 1.092 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00171/1.438, allocations: 375.4 kB / 1.429 GB, free: 4 MB / 1.092 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002179/1.44, allocations: 1.749 MB / 1.431 GB, free: 2.199 MB / 1.092 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003488/1.444, allocations: 266.7 kB / 1.431 GB, free: 1.938 MB / 1.092 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004385/1.444, allocations: 112 kB / 1.431 GB, free: 1.828 MB / 1.092 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.004913/1.449, allocations: 2.159 MB / 1.433 GB, free: 15.66 MB / 1.108 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003472/1.453, allocations: 1.985 MB / 1.435 GB, free: 13.43 MB / 1.108 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.005481/1.458, allocations: 3.072 MB / 1.438 GB, free: 10.16 MB / 1.108 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.33e-05/1.458, allocations: 4 kB / 1.438 GB, free: 10.16 MB / 1.108 GB Notification: Performance of matching and sorting (n=276) (initialization_lambda0): time 0.009231/1.467, allocations: 4.122 MB / 1.442 GB, free: 6.016 MB / 1.108 GB Notification: Performance of prepare postOptimizeDAE: time 2.893e-05/1.467, allocations: 14.03 kB / 1.442 GB, free: 6.004 MB / 1.108 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.521e-05/1.467, allocations: 13.12 kB / 1.442 GB, free: 5.992 MB / 1.108 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002184/1.469, allocations: 0.802 MB / 1.443 GB, free: 5.184 MB / 1.108 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00159/1.471, allocations: 363.4 kB / 1.443 GB, free: 4.828 MB / 1.108 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01705/1.488, allocations: 11.42 MB / 1.454 GB, free: 9.023 MB / 1.123 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003397/1.492, allocations: 215.1 kB / 1.455 GB, free: 8.812 MB / 1.123 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004737/1.492, allocations: 104 kB / 1.455 GB, free: 8.711 MB / 1.123 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 63 * 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 (182): * Single equations (assignments): 176 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 2 * 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 {(1,6), (1,6)} Notification: Performance of prepare postOptimizeDAE: time 0.0006976/1.493, allocations: 267.8 kB / 1.455 GB, free: 8.441 MB / 1.123 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001271/1.494, allocations: 345.5 kB / 1.455 GB, free: 8.102 MB / 1.123 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005768/1.5, allocations: 2 MB / 1.457 GB, free: 6.082 MB / 1.123 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.957e-05/1.5, allocations: 8 kB / 1.457 GB, free: 6.074 MB / 1.123 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.202e-06/1.5, allocations: 3.938 kB / 1.457 GB, free: 6.07 MB / 1.123 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003904/1.504, allocations: 1.737 MB / 1.459 GB, free: 4.258 MB / 1.123 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01055/1.514, allocations: 4.095 MB / 1.463 GB, free: 92 kB / 1.123 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.1e-05/1.514, allocations: 4 kB / 1.463 GB, free: 88 kB / 1.123 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001038/1.515, allocations: 163.8 kB / 1.463 GB, free: 15.93 MB / 1.139 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0008213/1.516, allocations: 325.4 kB / 1.463 GB, free: 15.6 MB / 1.139 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 8.571e-05/1.516, allocations: 27.97 kB / 1.463 GB, free: 15.57 MB / 1.139 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001692/1.518, allocations: 1.62 MB / 1.465 GB, free: 13.9 MB / 1.139 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.815e-06/1.518, allocations: 0 / 1.465 GB, free: 13.9 MB / 1.139 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006749/1.525, allocations: 2.729 MB / 1.468 GB, free: 11.14 MB / 1.139 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001898/1.527, allocations: 0.5805 MB / 1.468 GB, free: 10.54 MB / 1.139 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001059/1.528, allocations: 19.92 kB / 1.468 GB, free: 10.52 MB / 1.139 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002321/1.53, allocations: 87.97 kB / 1.468 GB, free: 10.43 MB / 1.139 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001429/1.53, allocations: 48.59 kB / 1.468 GB, free: 10.39 MB / 1.139 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001341/1.53, allocations: 39.91 kB / 1.468 GB, free: 10.35 MB / 1.139 GB Notification: Performance of sorting global known variables: time 0.006785/1.537, allocations: 2.925 MB / 1.471 GB, free: 7.414 MB / 1.139 GB Notification: Performance of sort global known variables: time 2.1e-07/1.537, allocations: 0 / 1.471 GB, free: 7.414 MB / 1.139 GB Notification: Performance of remove unused functions: time 0.007152/1.544, allocations: 1.575 MB / 1.473 GB, free: 5.836 MB / 1.139 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 1 (floMacDyn.vol.dynBal.U) * 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 (60): * Single equations (assignments): 53 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 5 * 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 {(1,7), (1,7)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002348/1.546, allocations: 0.756 MB / 1.474 GB, free: 5.078 MB / 1.139 GB Notification: Performance of simCode: created initialization part: time 0.009036/1.556, allocations: 4.174 MB / 1.478 GB, free: 0.8906 MB / 1.139 GB Notification: Performance of simCode: created event and clocks part: time 5.831e-06/1.556, allocations: 0 / 1.478 GB, free: 0.8906 MB / 1.139 GB Notification: Performance of simCode: created simulation system equations: time 0.00178/1.557, allocations: 0.6133 MB / 1.478 GB, free: 284 kB / 1.139 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.008693/1.566, allocations: 1.819 MB / 1.48 GB, free: 14.5 MB / 1.154 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01256/1.579, allocations: 5.88 MB / 1.486 GB, free: 8.574 MB / 1.154 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002501/1.581, allocations: 2.147 MB / 1.488 GB, free: 6.398 MB / 1.154 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001186/1.582, allocations: 259.3 kB / 1.488 GB, free: 6.145 MB / 1.154 GB Notification: Performance of SimCode: time 1.002e-06/1.582, allocations: 0 / 1.488 GB, free: 6.145 MB / 1.154 GB Notification: Performance of Templates: time 0.1244/1.707, allocations: 89.64 MB / 1.576 GB, free: 13 MB / 1.248 GB " [Timeout remaining time 298] make -j1 -f Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos.makefile [Timeout 300] (rm -f Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos.pipe ; mkfifo Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos.pipe ; head -c 1048576 < Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos.pipe >> ../files/Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos.sim & ./Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos -abortSlowSimulation -alarm=400 -emit_protected -lv LOG_STATS > Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos.pipe 2>&1) [Timeout 400] diffSimulationResults("Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_10.0.x/Buildings_Fluid_Movers_Validation_Pump_stratos.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork_2/OpenModelicaLibraryTesting/files/Buildings_10_Buildings.Fluid.Movers.Validation.Pump_stratos.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: 27.353931872174144]