Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_3.2.3_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.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 0.0008294/0.0008294, allocations: 87.62 kB / 21.43 MB, free: 3.133 MB / 18.57 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 0.003973/0.003973, allocations: 162 kB / 24.69 MB, free: 8.891 MB / 18.57 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 0.8226/0.8226, allocations: 158.6 MB / 186.5 MB, free: 3.039 MB / 170.7 MB " [Timeout remaining time 179] Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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: "" <> buildModelFMU(Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b,fileNamePrefix="Modelica_3_2_3_Modelica_Mechanics_MultiBody_Examples_Loops_Engine1b",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b,fileNamePrefix="Modelica_3_2_3_Modelica_Mechanics_MultiBody_Examples_Loops_Engine1b",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.512e-06/1.512e-06, allocations: 0 / 298.5 MB, free: 3.488 MB / 282.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 1.552e-05/1.703e-05, allocations: 2.281 kB / 298.5 MB, free: 3.484 MB / 282.7 MB Notification: Performance of NFInst.instantiate(Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b): time 0.1354/0.1354, allocations: 17.78 MB / 316.3 MB, free: 5.355 MB / 282.7 MB Notification: Performance of NFInst.instExpressions: time 0.01128/0.1467, allocations: 6.027 MB / 322.3 MB, free: 1.434 MB / 282.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.00244/0.1492, allocations: 200.5 kB / 322.5 MB, free: 1.363 MB / 282.7 MB Notification: Performance of NFTyping.typeComponents: time 0.006561/0.1557, allocations: 6.524 MB / 329 MB, free: 13.71 MB / 298.7 MB Notification: Performance of NFTyping.typeBindings: time 0.006294/0.162, allocations: 3.678 MB / 332.7 MB, free: 10.99 MB / 298.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.002315/0.1643, allocations: 1.898 MB / 334.6 MB, free: 9.66 MB / 298.7 MB Notification: Performance of NFFlatten.flatten: time 0.009721/0.174, allocations: 13.57 MB / 348.1 MB, free: 12.94 MB / 314.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.007503/0.1816, allocations: 7.854 MB / 356 MB, free: 5 MB / 314.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.006168/0.1877, allocations: 5.832 MB / 361.8 MB, free: 15.16 MB / 330.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.005387/0.1931, allocations: 5.858 MB / 367.7 MB, free: 9.285 MB / 330.7 MB Notification: Performance of NFPackage.collectConstants: time 0.001304/0.1944, allocations: 0.7812 MB / 368.5 MB, free: 8.504 MB / 330.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002323/0.1967, allocations: 1.705 MB / 370.2 MB, free: 6.797 MB / 330.7 MB Notification: Performance of NFScalarize.scalarize: time 0.002918/0.1997, allocations: 4.847 MB / 375 MB, free: 1.938 MB / 330.7 MB Notification: Performance of NFVerifyModel.verify: time 0.003058/0.2027, allocations: 3.222 MB / 378.2 MB, free: 14.71 MB / 346.7 MB Notification: Performance of NFConvertDAE.convert: time 0.01067/0.2134, allocations: 15.37 MB / 393.6 MB, free: 15.29 MB / 362.7 MB Notification: Performance of FrontEnd - DAE generated: time 4.418e-06/0.2134, allocations: 4 kB / 393.6 MB, free: 15.29 MB / 362.7 MB Notification: Performance of FrontEnd: time 1.373e-06/0.2134, allocations: 0 / 393.6 MB, free: 15.29 MB / 362.7 MB Notification: Performance of Transformations before backend: time 0.0002533/0.2136, allocations: 0 / 393.6 MB, free: 15.29 MB / 362.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2489 * Number of variables: 2489 Notification: Performance of Generate backend data structure: time 0.01561/0.2292, allocations: 11.28 MB / 404.9 MB, free: 3.918 MB / 362.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.421e-05/0.2293, allocations: 15.98 kB / 404.9 MB, free: 3.902 MB / 362.7 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.001173/0.2305, allocations: 1.197 MB / 406.1 MB, free: 2.695 MB / 362.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.1319/0.3623, allocations: 25.56 MB / 431.7 MB, free: 9.102 MB / 394.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01708/0.3794, allocations: 9.284 MB / 441 MB, free: 15.7 MB / 410.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003224/0.3797, allocations: 447.9 kB / 441.4 MB, free: 15.27 MB / 410.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002217/0.3819, allocations: 0.6171 MB / 442 MB, free: 14.65 MB / 410.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0254/0.4073, allocations: 17.08 MB / 459.1 MB, free: 12.45 MB / 426.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0003417/0.4077, allocations: 103.2 kB / 459.2 MB, free: 12.34 MB / 426.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001195/0.4089, allocations: 279.8 kB / 459.5 MB, free: 12.07 MB / 426.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.002834/0.4117, allocations: 2.854 MB / 462.3 MB, free: 9.211 MB / 426.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.2636/0.6753, allocations: 13.26 MB / 475.6 MB, free: 127.5 MB / 426.8 MB 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 0.06787/0.7432, allocations: 64.42 MB / 0.5273 GB, free: 81.7 MB / 426.8 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01075/0.7539, allocations: 6.739 MB / 0.5339 GB, free: 74.95 MB / 426.8 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.003413/0.7573, allocations: 3.889 MB / 0.5377 GB, free: 71.05 MB / 426.8 MB Notification: Performance of preOpt evalFunc (simulation): time 0.01374/0.7711, allocations: 10.71 MB / 0.5482 GB, free: 60.52 MB / 426.8 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.986e-05/0.7711, allocations: 68.5 kB / 0.5482 GB, free: 60.45 MB / 426.8 MB Notification: Performance of pre-optimization done (n=293): time 6.262e-06/0.7711, allocations: 0 / 0.5482 GB, free: 60.45 MB / 426.8 MB Notification: Performance of matching and sorting (n=365): time 0.07987/0.851, allocations: 43.39 MB / 0.5906 GB, free: 17.71 MB / 426.8 MB Notification: Performance of inlineWhenForInitialization (initialization): time 8.114e-05/0.8511, allocations: 402.3 kB / 0.591 GB, free: 17.23 MB / 426.8 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.009022/0.8601, allocations: 9.029 MB / 0.5998 GB, free: 8.434 MB / 426.8 MB Notification: Performance of collectPreVariables (initialization): time 0.0007797/0.8609, allocations: 85.7 kB / 0.5999 GB, free: 8.344 MB / 426.8 MB Notification: Performance of collectInitialEqns (initialization): time 0.002429/0.8633, allocations: 5.532 MB / 0.6053 GB, free: 2.965 MB / 426.8 MB Notification: Performance of collectInitialBindings (initialization): time 0.001369/0.8647, allocations: 1.377 MB / 0.6066 GB, free: 1.605 MB / 426.8 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001745/0.8664, allocations: 1.708 MB / 0.6083 GB, free: 15.88 MB / 442.8 MB Notification: Performance of setup shared object (initialization): time 7.813e-05/0.8665, allocations: 309.1 kB / 0.6086 GB, free: 15.57 MB / 442.8 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004493/0.871, allocations: 3.694 MB / 0.6122 GB, free: 11.88 MB / 442.8 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.007845/0.8788, allocations: 8.738 MB / 0.6207 GB, free: 0.7109 MB / 442.8 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.01222/0.8911, allocations: 13.18 MB / 0.6336 GB, free: 1.172 MB / 458.8 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001171/0.8912, allocations: 49.31 kB / 0.6337 GB, free: 1.125 MB / 458.8 MB Notification: Performance of matching and sorting (n=1124) (initialization): time 0.1622/1.053, allocations: 15.38 MB / 0.6487 GB, free: 144.2 MB / 458.8 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001101/1.054, allocations: 78.14 kB / 0.6488 GB, free: 144.2 MB / 458.8 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0002091/1.054, allocations: 164.9 kB / 0.6489 GB, free: 144.2 MB / 458.8 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.007792/1.062, allocations: 4.026 MB / 0.6528 GB, free: 143.4 MB / 458.8 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003984/1.065, allocations: 1.836 MB / 0.6546 GB, free: 143.2 MB / 458.8 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02261/1.088, allocations: 27 MB / 0.681 GB, free: 128.2 MB / 458.8 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006463/1.095, allocations: 0.6435 MB / 0.6816 GB, free: 127.6 MB / 458.8 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001501/1.096, allocations: 492 kB / 0.6821 GB, free: 127.1 MB / 458.8 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 756 * Number of states: 0 () * Number of discrete variables: 72 (Rod3.color[3],Rod3.color[2],Rod3.color[1],Rod1.color[3],Rod1.color[2],Rod1.color[1],Cylinder.boxColor[3],Cylinder.boxColor[2],Cylinder.boxColor[1],B1.cylinderColor[3],B1.cylinderColor[2],B1.cylinderColor[1],B2.cylinderColor[3],B2.cylinderColor[2],B2.cylinderColor[1],cylPosition.color[3],cylPosition.color[2],cylPosition.color[1],Mid.color[3],Mid.color[2],Mid.color[1],Crank2.color[3],Crank2.color[2],Crank2.color[1],Crank2.body.sphereColor[3],Crank2.body.sphereColor[2],Crank2.body.sphereColor[1],Crank1.color[3],Crank1.color[2],Crank1.color[1],Crank1.body.sphereColor[3],Crank1.body.sphereColor[2],Crank1.body.sphereColor[1],Crank3.color[3],Crank3.color[2],Crank3.color[1],Crank3.body.sphereColor[3],Crank3.body.sphereColor[2],Crank3.body.sphereColor[1],Crank4.color[3],Crank4.color[2],Crank4.color[1],Crank4.body.sphereColor[3],Crank4.body.sphereColor[2],Crank4.body.sphereColor[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[1],world.axisColor_x[3],world.axisColor_x[2],world.axisColor_x[1],world.groundColor[3],world.groundColor[2],world.groundColor[1],world.gravitySphereColor[3],world.gravitySphereColor[2],world.gravitySphereColor[1],Bearing.cylinderColor[3],Bearing.cylinderColor[2],Bearing.cylinderColor[1],Rod2.color[3],Rod2.color[2],Rod2.color[1],Rod2.body.sphereColor[3],Rod2.body.sphereColor[2],Rod2.body.sphereColor[1],Piston.color[3],Piston.color[2],Piston.color[1],Piston.body.sphereColor[3],Piston.body.sphereColor[2],Piston.body.sphereColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (988): * Single equations (assignments): 982 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(5,101,72.0%), (1,4,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,3)} Notification: Performance of prepare postOptimizeDAE: time 0.00549/1.102, allocations: 3.61 MB / 0.6856 GB, free: 123.6 MB / 458.8 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001518/1.103, allocations: 0.7221 MB / 0.6863 GB, free: 123.2 MB / 458.8 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01087/1.114, allocations: 9.358 MB / 0.6955 GB, free: 113.8 MB / 458.8 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.709e-05/1.114, allocations: 36.88 kB / 0.6955 GB, free: 113.8 MB / 458.8 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.501e-05/1.114, allocations: 20 kB / 0.6955 GB, free: 113.8 MB / 458.8 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.617e-05/1.114, allocations: 23.36 kB / 0.6955 GB, free: 113.8 MB / 458.8 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02829/1.142, allocations: 19.55 MB / 0.7146 GB, free: 94.24 MB / 458.8 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.526e-05/1.142, allocations: 8 kB / 0.7146 GB, free: 94.23 MB / 458.8 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001439/1.144, allocations: 455.3 kB / 0.7151 GB, free: 93.79 MB / 458.8 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.006351/1.15, allocations: 3.806 MB / 0.7188 GB, free: 89.97 MB / 458.8 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006281/1.151, allocations: 68 kB / 0.7189 GB, free: 89.91 MB / 458.8 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02107/1.172, allocations: 26.31 MB / 0.7446 GB, free: 63.47 MB / 458.8 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.486e-06/1.172, allocations: 20.03 kB / 0.7446 GB, free: 63.45 MB / 458.8 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01495/1.187, allocations: 14.15 MB / 0.7584 GB, free: 49.29 MB / 458.8 MB Notification: Performance of postOpt removeConstants (simulation): time 0.003407/1.19, allocations: 1.394 MB / 0.7598 GB, free: 47.89 MB / 458.8 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001481/1.192, allocations: 75.89 kB / 0.7598 GB, free: 47.82 MB / 458.8 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003096/1.195, allocations: 357.4 kB / 0.7602 GB, free: 47.48 MB / 458.8 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.00068/1.196, allocations: 282.5 kB / 0.7604 GB, free: 47.2 MB / 458.8 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001746/1.196, allocations: 100 kB / 0.7605 GB, free: 47.1 MB / 458.8 MB Notification: Performance of sorting global known variables: time 0.006533/1.202, allocations: 5.803 MB / 0.7662 GB, free: 41.34 MB / 458.8 MB Notification: Performance of sort global known variables: time 4e-08/1.202, allocations: 0 / 0.7662 GB, free: 41.34 MB / 458.8 MB Notification: Performance of remove unused functions: time 0.008341/1.211, allocations: 2.37 MB / 0.7685 GB, free: 38.98 MB / 458.8 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 35 * Number of states: 2 (Inertia.phi,Inertia.w) * 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 (241): * Single equations (assignments): 235 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(9,92,69.1%), (1,4,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.01483/1.225, allocations: 14.89 MB / 0.783 GB, free: 23.88 MB / 458.8 MB Notification: Performance of simCode: created initialization part: time 0.01068/1.236, allocations: 9.329 MB / 0.7922 GB, free: 14.53 MB / 458.8 MB Notification: Performance of simCode: created event and clocks part: time 1.126e-05/1.236, allocations: 4.375 kB / 0.7922 GB, free: 14.53 MB / 458.8 MB Notification: Performance of simCode: created simulation system equations: time 0.004226/1.24, allocations: 4.063 MB / 0.7961 GB, free: 10.41 MB / 458.8 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004804/1.245, allocations: 1.126 MB / 0.7972 GB, free: 9.301 MB / 458.8 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.2564/1.501, allocations: 93.92 MB / 0.889 GB, free: 77.95 MB / 458.8 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.006103/1.508, allocations: 5.319 MB / 0.8941 GB, free: 72.62 MB / 458.8 MB Notification: Performance of simCode: alias equations: time 0.005369/1.513, allocations: 2.812 MB / 0.8969 GB, free: 69.86 MB / 458.8 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.004534/1.517, allocations: 3.988 MB / 0.9008 GB, free: 65.86 MB / 458.8 MB Notification: Performance of SimCode: time 1.533e-06/1.517, allocations: 0.7656 kB / 0.9008 GB, free: 65.86 MB / 458.8 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.323/1.84, allocations: 171.2 MB / 1.068 GB, free: 77.94 MB / 474.8 MB Notification: Performance of buildModelFMU: Generate platform static: time 17.64/19.48, allocations: 7.922 kB / 1.068 GB, free: 77.93 MB / 474.8 MB " [Timeout remaining time 640] (rm -f Modelica_3.2.3_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.pipe ; mkfifo Modelica_3.2.3_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.pipe ; head -c 1048576 < Modelica_3.2.3_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.pipe >> ../files/Modelica_3.2.3_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.sim & python3 -m fmpy simulate --output-file Modelica_3.2.3_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b_res.csv --start-time 0 --stop-time 0.5 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 9.87752e-05 Modelica_3_2_3_Modelica_Mechanics_MultiBody_Examples_Loops_Engine1b.fmu > Modelica_3.2.3_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.pipe 2>&1) [Timeout 52.5] diffSimulationResults("Modelica_3.2.3_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b_res.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v3.2.3+build.4/Modelica/Mechanics/MultiBody/Examples/Loops/Engine1b/Engine1b.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Modelica_3.2.3_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 21.397846774198115]