Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries.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 0.001628/0.001628, 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 0.001809/0.001809, allocations: 213.8 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 1.51/1.51, allocations: 230.6 MB / 256.8 MB, free: 7.805 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 3.34/3.34, allocations: 0.5107 GB / 0.8166 GB, free: 17.82 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.Examples.PumpsSeries,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|floMac1.y|floMac1.dp|floMac2.dp|floMac1.m_flow|floMac2.m_flow",fileNamePrefix="Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries") translateModel(Buildings.Fluid.Movers.Examples.PumpsSeries,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|floMac1.y|floMac1.dp|floMac2.dp|floMac1.m_flow|floMac2.m_flow",fileNamePrefix="Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries") [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 0.002091/0.002091, allocations: 69.83 kB / 1.187 GB, free: 13.49 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3608/0.3629, allocations: 181.9 MB / 1.365 GB, free: 13.57 MB / 1.061 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Examples.PumpsSeries): time 0.05735/0.4203, allocations: 47.45 MB / 1.411 GB, free: 13.95 MB / 1.107 GB Notification: Performance of NFInst.instExpressions: time 0.02988/0.4501, allocations: 16.97 MB / 1.428 GB, free: 12.93 MB / 1.123 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003381/0.4535, allocations: 103.1 kB / 1.428 GB, free: 12.83 MB / 1.123 GB Notification: Performance of NFTyping.typeComponents: time 0.006616/0.4601, allocations: 1.931 MB / 1.429 GB, free: 10.89 MB / 1.123 GB Notification: Performance of NFTyping.typeBindings: time 0.00847/0.4686, allocations: 2.885 MB / 1.432 GB, free: 7.996 MB / 1.123 GB Notification: Performance of NFTyping.typeClassSections: time 0.005687/0.4743, allocations: 2.105 MB / 1.434 GB, free: 5.898 MB / 1.123 GB Notification: Performance of NFFlatten.flatten: time 0.02231/0.4966, allocations: 14.49 MB / 1.449 GB, free: 7.383 MB / 1.139 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002843/0.4994, allocations: 1.409 MB / 1.45 GB, free: 5.934 MB / 1.139 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005417/0.5049, allocations: 2.129 MB / 1.452 GB, free: 3.805 MB / 1.139 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002887/0.5077, allocations: 1.463 MB / 1.453 GB, free: 2.336 MB / 1.139 GB Notification: Performance of NFPackage.collectConstants: time 0.0004932/0.5082, allocations: 195.9 kB / 1.454 GB, free: 2.145 MB / 1.139 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003769/0.512, allocations: 1.618 MB / 1.455 GB, free: 0.5234 MB / 1.139 GB Notification: Performance of NFScalarize.scalarize: time 0.0009512/0.513, allocations: 0.8603 MB / 1.456 GB, free: 15.66 MB / 1.154 GB Notification: Performance of NFVerifyModel.verify: time 0.001446/0.5144, allocations: 1.03 MB / 1.457 GB, free: 14.62 MB / 1.154 GB Notification: Performance of NFConvertDAE.convert: time 0.006404/0.5208, allocations: 4.262 MB / 1.461 GB, free: 10.35 MB / 1.154 GB Notification: Performance of FrontEnd - DAE generated: time 5.039e-06/0.5208, allocations: 0 / 1.461 GB, free: 10.35 MB / 1.154 GB Notification: Performance of FrontEnd: time 3.256e-06/0.5208, allocations: 7.938 kB / 1.461 GB, free: 10.34 MB / 1.154 GB Notification: Performance of Transformations before backend: time 6.401e-05/0.5209, allocations: 0 / 1.461 GB, free: 10.34 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: 249 * Number of variables: 249 Notification: Performance of Generate backend data structure: time 0.006039/0.5269, allocations: 3.082 MB / 1.464 GB, free: 7.199 MB / 1.154 GB Notification: Performance of prepare preOptimizeDAE: time 4.752e-05/0.527, allocations: 8.031 kB / 1.464 GB, free: 7.191 MB / 1.154 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005474/0.5324, allocations: 0.9348 MB / 1.465 GB, free: 6.254 MB / 1.154 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008555/0.541, allocations: 3.282 MB / 1.468 GB, free: 2.895 MB / 1.154 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001138/0.5411, allocations: 85.94 kB / 1.468 GB, free: 2.812 MB / 1.154 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002935/0.5414, allocations: 116 kB / 1.469 GB, free: 2.699 MB / 1.154 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003156/0.5446, allocations: 1.505 MB / 1.47 GB, free: 1.133 MB / 1.154 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.571e-05/0.5446, allocations: 0 / 1.47 GB, free: 1.133 MB / 1.154 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001134/0.5447, allocations: 44 kB / 1.47 GB, free: 1.09 MB / 1.154 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.113e-05/0.5447, allocations: 27.94 kB / 1.47 GB, free: 1.062 MB / 1.154 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003284/0.548, allocations: 1.292 MB / 1.471 GB, free: 15.77 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 0.009968/0.558, allocations: 5.214 MB / 1.476 GB, free: 10.43 MB / 1.17 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003233/0.5612, allocations: 0.9956 MB / 1.477 GB, free: 9.434 MB / 1.17 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001252/0.5625, allocations: 474.1 kB / 1.478 GB, free: 8.969 MB / 1.17 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003675/0.5661, allocations: 1.672 MB / 1.479 GB, free: 7.273 MB / 1.17 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.805e-05/0.5662, allocations: 47 kB / 1.48 GB, free: 7.219 MB / 1.17 GB Notification: Performance of pre-optimization done (n=56): time 2.604e-06/0.5662, allocations: 0 / 1.48 GB, free: 7.219 MB / 1.17 GB Notification: Performance of matching and sorting (n=56): time 0.005237/0.5714, allocations: 1.66 MB / 1.481 GB, free: 5.551 MB / 1.17 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.774e-05/0.5715, allocations: 55.91 kB / 1.481 GB, free: 5.48 MB / 1.17 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003746/0.5752, allocations: 2.476 MB / 1.484 GB, free: 2.992 MB / 1.17 GB Notification: Performance of collectPreVariables (initialization): time 0.000141/0.5754, allocations: 45.7 kB / 1.484 GB, free: 2.941 MB / 1.17 GB Notification: Performance of collectInitialEqns (initialization): time 0.0009975/0.5764, allocations: 1.017 MB / 1.485 GB, free: 1.914 MB / 1.17 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002573/0.5766, allocations: 218.2 kB / 1.485 GB, free: 1.699 MB / 1.17 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006235/0.5773, allocations: 422.5 kB / 1.485 GB, free: 1.281 MB / 1.17 GB Notification: Performance of setup shared object (initialization): time 0.0001426/0.5774, allocations: 301.1 kB / 1.486 GB, free: 0.9844 MB / 1.17 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002147/0.5795, allocations: 1.139 MB / 1.487 GB, free: 15.84 MB / 1.186 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002626/0.5822, allocations: 1.747 MB / 1.488 GB, free: 13.9 MB / 1.186 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004323/0.5865, allocations: 2.421 MB / 1.491 GB, free: 11.37 MB / 1.186 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.184e-06/0.5865, allocations: 4 kB / 1.491 GB, free: 11.36 MB / 1.186 GB Notification: Performance of matching and sorting (n=232) (initialization): time 0.005716/0.5922, allocations: 3.003 MB / 1.494 GB, free: 8.352 MB / 1.186 GB Notification: Performance of prepare postOptimizeDAE: time 2.706e-05/0.5922, allocations: 8 kB / 1.494 GB, free: 8.344 MB / 1.186 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.825e-05/0.5923, allocations: 8 kB / 1.494 GB, free: 8.336 MB / 1.186 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005017/0.5928, allocations: 128.7 kB / 1.494 GB, free: 8.207 MB / 1.186 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00139/0.5941, allocations: 343.9 kB / 1.494 GB, free: 7.871 MB / 1.186 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006582/0.5948, allocations: 0.646 MB / 1.495 GB, free: 7.199 MB / 1.186 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001855/0.5967, allocations: 214.9 kB / 1.495 GB, free: 6.988 MB / 1.186 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001736/0.5968, allocations: 99.89 kB / 1.495 GB, free: 6.891 MB / 1.186 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002708/0.5995, allocations: 1.475 MB / 1.496 GB, free: 5.41 MB / 1.186 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002258/0.6018, allocations: 1.558 MB / 1.498 GB, free: 3.66 MB / 1.186 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003603/0.6054, allocations: 2.05 MB / 1.5 GB, free: 1.496 MB / 1.186 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.122e-06/0.6054, allocations: 4 kB / 1.5 GB, free: 1.492 MB / 1.186 GB Notification: Performance of matching and sorting (n=232) (initialization_lambda0): time 0.005394/0.6108, allocations: 2.656 MB / 1.503 GB, free: 14.82 MB / 1.201 GB Notification: Performance of prepare postOptimizeDAE: time 2.052e-05/0.6108, allocations: 11.94 kB / 1.503 GB, free: 14.81 MB / 1.201 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.531e-05/0.6108, allocations: 8 kB / 1.503 GB, free: 14.8 MB / 1.201 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0008692/0.6117, allocations: 185 kB / 1.503 GB, free: 14.62 MB / 1.201 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001268/0.613, allocations: 327.5 kB / 1.503 GB, free: 14.3 MB / 1.201 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005739/0.6187, allocations: 3.107 MB / 1.506 GB, free: 11.02 MB / 1.201 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001983/0.6207, allocations: 183.2 kB / 1.506 GB, free: 10.84 MB / 1.201 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001908/0.6209, allocations: 75.97 kB / 1.506 GB, free: 10.77 MB / 1.201 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 (161): * Single equations (assignments): 156 * 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 {(1,5)} Notification: Performance of prepare postOptimizeDAE: time 0.000408/0.6213, allocations: 251.8 kB / 1.507 GB, free: 10.52 MB / 1.201 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004191/0.6217, allocations: 226.5 kB / 1.507 GB, free: 10.29 MB / 1.201 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004234/0.626, allocations: 1.563 MB / 1.508 GB, free: 8.715 MB / 1.201 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.705e-05/0.626, allocations: 12 kB / 1.508 GB, free: 8.703 MB / 1.201 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.14e-06/0.626, allocations: 3.938 kB / 1.508 GB, free: 8.699 MB / 1.201 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.02e-05/0.626, allocations: 3.984 kB / 1.508 GB, free: 8.695 MB / 1.201 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006221/0.6322, allocations: 2.72 MB / 1.511 GB, free: 5.922 MB / 1.201 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.6e-06/0.6322, allocations: 0 / 1.511 GB, free: 5.922 MB / 1.201 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0009271/0.6331, allocations: 167.8 kB / 1.511 GB, free: 5.758 MB / 1.201 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003288/0.6335, allocations: 100.7 kB / 1.511 GB, free: 5.656 MB / 1.201 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.357e-05/0.6335, allocations: 35.91 kB / 1.511 GB, free: 5.621 MB / 1.201 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0005284/0.6341, allocations: 0.6109 MB / 1.512 GB, free: 4.984 MB / 1.201 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.304e-06/0.6341, allocations: 0 / 1.512 GB, free: 4.984 MB / 1.201 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005272/0.6393, allocations: 2.132 MB / 1.514 GB, free: 2.82 MB / 1.201 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001139/0.6405, allocations: 350.1 kB / 1.514 GB, free: 2.477 MB / 1.201 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002475/0.6407, allocations: 15.98 kB / 1.514 GB, free: 2.461 MB / 1.201 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001101/0.6418, allocations: 83.97 kB / 1.514 GB, free: 2.379 MB / 1.201 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001032/0.6419, allocations: 52.5 kB / 1.515 GB, free: 2.324 MB / 1.201 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.055e-05/0.642, allocations: 39.97 kB / 1.515 GB, free: 2.285 MB / 1.201 GB Notification: Performance of sorting global known variables: time 0.002709/0.6447, allocations: 1.642 MB / 1.516 GB, free: 0.6367 MB / 1.201 GB Notification: Performance of sort global known variables: time 1e-07/0.6447, allocations: 4 kB / 1.516 GB, free: 0.6328 MB / 1.201 GB Notification: Performance of remove unused functions: time 0.003227/0.648, allocations: 1.189 MB / 1.517 GB, free: 15.44 MB / 1.217 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 2 (floMac1.motSpe.y,floMac2.motSpe.y) * 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 (63): * Single equations (assignments): 56 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 6 * 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 {(1,7)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001517/0.6495, allocations: 0.6927 MB / 1.518 GB, free: 14.74 MB / 1.217 GB Notification: Performance of simCode: created initialization part: time 0.006771/0.6562, allocations: 3.186 MB / 1.521 GB, free: 11.55 MB / 1.217 GB Notification: Performance of simCode: created event and clocks part: time 8.386e-06/0.6563, allocations: 4 kB / 1.521 GB, free: 11.54 MB / 1.217 GB Notification: Performance of simCode: created simulation system equations: time 0.001522/0.6578, allocations: 0.5395 MB / 1.522 GB, free: 11 MB / 1.217 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004495/0.6623, allocations: 1.105 MB / 1.523 GB, free: 9.941 MB / 1.217 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008519/0.6708, allocations: 4.354 MB / 1.527 GB, free: 5.531 MB / 1.217 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001297/0.6721, allocations: 1.092 MB / 1.528 GB, free: 4.402 MB / 1.217 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007323/0.6728, allocations: 199.3 kB / 1.528 GB, free: 4.207 MB / 1.217 GB Notification: Performance of SimCode: time 6.91e-07/0.6728, allocations: 0 / 1.528 GB, free: 4.207 MB / 1.217 GB Notification: Performance of Templates: time 0.0799/0.7527, allocations: 52.88 MB / 1.58 GB, free: 15.58 MB / 1.279 GB " [Timeout remaining time 299] make -j1 -f Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries.makefile [Timeout 300] (rm -f Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe ; mkfifo Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe >> ../files/Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries.sim & ./Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries -abortSlowSimulation -alarm=800 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe 2>&1) [Timeout 800] diffSimulationResults("Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_Movers_Examples_PumpsSeries.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.Movers.Examples.PumpsSeries.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: 21.832414079923183]