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 0.001741/0.001741, 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 0.001963/0.001963, allocations: 213.4 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 1.477/1.477, allocations: 230.6 MB / 256.8 MB, free: 7.789 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 3.269/3.269, allocations: 0.5107 GB / 0.8166 GB, free: 17.83 MB / 0.6231 GB " [Timeout remaining time 176] 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 0.002099/0.002099, allocations: 70.42 kB / 1.187 GB, free: 13.39 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3813/0.3834, allocations: 181.9 MB / 1.365 GB, free: 13.63 MB / 1.061 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Validation.SpeedControlled_y_linear): time 0.06371/0.4472, allocations: 53.96 MB / 1.417 GB, free: 7.48 MB / 1.107 GB Notification: Performance of NFInst.instExpressions: time 0.03309/0.4802, allocations: 18.65 MB / 1.436 GB, free: 4.785 MB / 1.123 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003953/0.4842, allocations: 119 kB / 1.436 GB, free: 4.668 MB / 1.123 GB Notification: Performance of NFTyping.typeComponents: time 0.007001/0.4912, allocations: 2.036 MB / 1.438 GB, free: 2.625 MB / 1.123 GB Notification: Performance of NFTyping.typeBindings: time 0.009941/0.5011, allocations: 3.135 MB / 1.441 GB, free: 15.47 MB / 1.139 GB Notification: Performance of NFTyping.typeClassSections: time 0.007118/0.5083, allocations: 2.377 MB / 1.443 GB, free: 13.11 MB / 1.139 GB Notification: Performance of NFFlatten.flatten: time 0.02377/0.532, allocations: 14.91 MB / 1.458 GB, free: 14.17 MB / 1.154 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003454/0.5355, allocations: 1.495 MB / 1.459 GB, free: 12.64 MB / 1.154 GB Notification: Performance of NFEvalConstants.evaluate: time 0.006762/0.5422, allocations: 2.365 MB / 1.461 GB, free: 10.27 MB / 1.154 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003565/0.5458, allocations: 1.556 MB / 1.463 GB, free: 8.707 MB / 1.154 GB Notification: Performance of NFPackage.collectConstants: time 0.000557/0.5464, allocations: 192 kB / 1.463 GB, free: 8.52 MB / 1.154 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004653/0.551, allocations: 1.977 MB / 1.465 GB, free: 6.539 MB / 1.154 GB Notification: Performance of NFScalarize.scalarize: time 0.00109/0.5521, allocations: 0.8837 MB / 1.466 GB, free: 5.652 MB / 1.154 GB Notification: Performance of NFVerifyModel.verify: time 0.001689/0.5538, allocations: 1.073 MB / 1.467 GB, free: 4.574 MB / 1.154 GB Notification: Performance of NFConvertDAE.convert: time 0.007524/0.5613, allocations: 4.542 MB / 1.471 GB, free: 16 kB / 1.154 GB Notification: Performance of FrontEnd - DAE generated: time 5.931e-06/0.5613, allocations: 0 / 1.471 GB, free: 16 kB / 1.154 GB Notification: Performance of FrontEnd: time 1.993e-06/0.5613, allocations: 0 / 1.471 GB, free: 16 kB / 1.154 GB Notification: Performance of Transformations before backend: time 9.151e-05/0.5614, allocations: 0 / 1.471 GB, free: 16 kB / 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 0.005996/0.5674, allocations: 3.238 MB / 1.474 GB, free: 12.71 MB / 1.17 GB Notification: Performance of prepare preOptimizeDAE: time 4.082e-05/0.5675, allocations: 8.031 kB / 1.474 GB, free: 12.71 MB / 1.17 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00524/0.5727, allocations: 0.9542 MB / 1.475 GB, free: 11.75 MB / 1.17 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008303/0.581, allocations: 3.361 MB / 1.479 GB, free: 8.312 MB / 1.17 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001187/0.5811, allocations: 94.09 kB / 1.479 GB, free: 8.219 MB / 1.17 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002857/0.5814, allocations: 120 kB / 1.479 GB, free: 8.102 MB / 1.17 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003231/0.5846, allocations: 1.557 MB / 1.48 GB, free: 6.461 MB / 1.17 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.669e-05/0.5847, allocations: 4 kB / 1.48 GB, free: 6.457 MB / 1.17 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001144/0.5848, allocations: 40 kB / 1.48 GB, free: 6.418 MB / 1.17 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.871e-05/0.5848, allocations: 28 kB / 1.48 GB, free: 6.391 MB / 1.17 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003417/0.5882, allocations: 1.343 MB / 1.482 GB, free: 5.051 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 0.0102/0.5984, allocations: 5.332 MB / 1.487 GB, free: 15.59 MB / 1.186 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002834/0.6013, allocations: 0.9715 MB / 1.488 GB, free: 14.61 MB / 1.186 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001224/0.6025, allocations: 485.8 kB / 1.488 GB, free: 14.14 MB / 1.186 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003894/0.6064, allocations: 1.711 MB / 1.49 GB, free: 12.4 MB / 1.186 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.882e-05/0.6064, allocations: 43.05 kB / 1.49 GB, free: 12.35 MB / 1.186 GB Notification: Performance of pre-optimization done (n=58): time 2.415e-06/0.6064, allocations: 0 / 1.49 GB, free: 12.35 MB / 1.186 GB Notification: Performance of matching and sorting (n=58): time 0.004924/0.6113, allocations: 1.628 MB / 1.492 GB, free: 10.71 MB / 1.186 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.599e-05/0.6114, allocations: 59.91 kB / 1.492 GB, free: 10.64 MB / 1.186 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003915/0.6153, allocations: 2.552 MB / 1.494 GB, free: 8.066 MB / 1.186 GB Notification: Performance of collectPreVariables (initialization): time 0.0001839/0.6155, allocations: 53.62 kB / 1.494 GB, free: 8.008 MB / 1.186 GB Notification: Performance of collectInitialEqns (initialization): time 0.000989/0.6165, allocations: 1.08 MB / 1.495 GB, free: 6.914 MB / 1.186 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002743/0.6167, allocations: 218.2 kB / 1.496 GB, free: 6.699 MB / 1.186 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006319/0.6174, allocations: 439.2 kB / 1.496 GB, free: 6.266 MB / 1.186 GB Notification: Performance of setup shared object (initialization): time 0.00014/0.6175, allocations: 309.1 kB / 1.496 GB, free: 5.961 MB / 1.186 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002112/0.6196, allocations: 1.133 MB / 1.497 GB, free: 4.824 MB / 1.186 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002615/0.6222, allocations: 1.912 MB / 1.499 GB, free: 2.684 MB / 1.186 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004156/0.6264, allocations: 2.437 MB / 1.502 GB, free: 140 kB / 1.186 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.354e-06/0.6264, allocations: 3.938 kB / 1.502 GB, free: 136 kB / 1.186 GB Notification: Performance of matching and sorting (n=234) (initialization): time 0.005631/0.632, allocations: 3.019 MB / 1.505 GB, free: 13.1 MB / 1.201 GB Notification: Performance of prepare postOptimizeDAE: time 3.104e-05/0.6321, allocations: 8.438 kB / 1.505 GB, free: 13.09 MB / 1.201 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.933e-05/0.6321, allocations: 12 kB / 1.505 GB, free: 13.08 MB / 1.201 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004343/0.6325, allocations: 96.78 kB / 1.505 GB, free: 12.98 MB / 1.201 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001395/0.6339, allocations: 355.5 kB / 1.505 GB, free: 12.63 MB / 1.201 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005864/0.6345, allocations: 0.6031 MB / 1.506 GB, free: 12 MB / 1.201 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00189/0.6364, allocations: 214.8 kB / 1.506 GB, free: 11.79 MB / 1.201 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001852/0.6366, allocations: 99.95 kB / 1.506 GB, free: 11.7 MB / 1.201 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002727/0.6393, allocations: 1.499 MB / 1.507 GB, free: 10.19 MB / 1.201 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002321/0.6416, allocations: 1.713 MB / 1.509 GB, free: 8.246 MB / 1.201 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003643/0.6453, allocations: 2.066 MB / 1.511 GB, free: 6.066 MB / 1.201 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.66e-06/0.6453, allocations: 4 kB / 1.511 GB, free: 6.062 MB / 1.201 GB Notification: Performance of matching and sorting (n=234) (initialization_lambda0): time 0.005312/0.6506, allocations: 2.648 MB / 1.514 GB, free: 3.41 MB / 1.201 GB Notification: Performance of prepare postOptimizeDAE: time 2.669e-05/0.6506, allocations: 8.438 kB / 1.514 GB, free: 3.402 MB / 1.201 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.197e-05/0.6506, allocations: 8 kB / 1.514 GB, free: 3.395 MB / 1.201 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006153/0.6513, allocations: 120.7 kB / 1.514 GB, free: 3.273 MB / 1.201 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001308/0.6526, allocations: 335.5 kB / 1.514 GB, free: 2.945 MB / 1.201 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004372/0.6569, allocations: 2.574 MB / 1.517 GB, free: 204 kB / 1.201 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002069/0.659, allocations: 191.6 kB / 1.517 GB, free: 12 kB / 1.201 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001925/0.6592, allocations: 87.97 kB / 1.517 GB, free: 15.93 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 0.0004345/0.6596, allocations: 248 kB / 1.517 GB, free: 15.68 MB / 1.217 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004149/0.66, allocations: 246.2 kB / 1.517 GB, free: 15.43 MB / 1.217 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003986/0.664, allocations: 1.58 MB / 1.519 GB, free: 13.84 MB / 1.217 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.957e-05/0.6641, allocations: 11.98 kB / 1.519 GB, free: 13.83 MB / 1.217 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.076e-06/0.6641, allocations: 3.938 kB / 1.519 GB, free: 13.83 MB / 1.217 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.034e-05/0.6641, allocations: 3.984 kB / 1.519 GB, free: 13.82 MB / 1.217 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006185/0.6702, allocations: 2.823 MB / 1.522 GB, free: 10.93 MB / 1.217 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.786e-06/0.6703, allocations: 4 kB / 1.522 GB, free: 10.93 MB / 1.217 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008857/0.6711, allocations: 168 kB / 1.522 GB, free: 10.77 MB / 1.217 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.00022/0.6714, allocations: 64.81 kB / 1.522 GB, free: 10.7 MB / 1.217 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.848e-05/0.6714, allocations: 31.97 kB / 1.522 GB, free: 10.67 MB / 1.217 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0004523/0.6719, allocations: 0.5952 MB / 1.523 GB, free: 10.05 MB / 1.217 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.579e-06/0.6719, allocations: 4 kB / 1.523 GB, free: 10.04 MB / 1.217 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003425/0.6753, allocations: 1.526 MB / 1.524 GB, free: 8.465 MB / 1.217 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008725/0.6762, allocations: 362 kB / 1.524 GB, free: 8.109 MB / 1.217 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002343/0.6764, allocations: 15.98 kB / 1.524 GB, free: 8.094 MB / 1.217 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001094/0.6775, allocations: 83.92 kB / 1.524 GB, free: 8.012 MB / 1.217 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000112/0.6776, allocations: 60.48 kB / 1.525 GB, free: 7.953 MB / 1.217 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.317e-05/0.6777, allocations: 51.97 kB / 1.525 GB, free: 7.902 MB / 1.217 GB Notification: Performance of sorting global known variables: time 0.002642/0.6804, allocations: 1.695 MB / 1.526 GB, free: 6.203 MB / 1.217 GB Notification: Performance of sort global known variables: time 9e-08/0.6804, allocations: 0 / 1.526 GB, free: 6.203 MB / 1.217 GB Notification: Performance of remove unused functions: time 0.003043/0.6834, allocations: 1.263 MB / 1.527 GB, free: 4.938 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 0.001563/0.685, allocations: 0.7531 MB / 1.528 GB, free: 4.176 MB / 1.217 GB Notification: Performance of simCode: created initialization part: time 0.00685/0.6918, allocations: 3.167 MB / 1.531 GB, free: 1 MB / 1.217 GB Notification: Performance of simCode: created event and clocks part: time 9.117e-06/0.6918, allocations: 7.938 kB / 1.531 GB, free: 0.9922 MB / 1.217 GB Notification: Performance of simCode: created simulation system equations: time 0.001576/0.6934, allocations: 0.5624 MB / 1.532 GB, free: 440 kB / 1.217 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004872/0.6983, allocations: 1.132 MB / 1.533 GB, free: 15.34 MB / 1.232 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008549/0.7068, allocations: 4.317 MB / 1.537 GB, free: 10.95 MB / 1.232 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001369/0.7082, allocations: 1.134 MB / 1.538 GB, free: 9.785 MB / 1.232 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008445/0.709, allocations: 211.2 kB / 1.538 GB, free: 9.578 MB / 1.232 GB Notification: Performance of SimCode: time 1.072e-06/0.709, allocations: 3.938 kB / 1.538 GB, free: 9.574 MB / 1.232 GB Notification: Performance of Templates: time 0.08177/0.7908, allocations: 55.11 MB / 1.592 GB, free: 2.707 MB / 1.279 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: 21.67086717672646]