Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.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 0.0008174/0.0008174, allocations: 76.08 kB / 20.67 MB, free: 3.891 MB / 18.57 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 0.0007797/0.0007797, allocations: 157 kB / 23.93 MB, free: 0.6289 MB / 18.57 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 0.833/0.833, allocations: 173.4 MB / 200.4 MB, free: 9.441 MB / 186.7 MB " [Timeout remaining time 179] 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: "" <> buildModelFMU(Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b,fileNamePrefix="Modelica_4_0_0_Modelica_Mechanics_MultiBody_Examples_Loops_Engine1b",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b,fileNamePrefix="Modelica_4_0_0_Modelica_Mechanics_MultiBody_Examples_Loops_Engine1b",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.392e-06/1.392e-06, allocations: 0 / 318.5 MB, free: 6.328 MB / 282.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 1.71e-05/1.849e-05, allocations: 2.281 kB / 318.5 MB, free: 6.324 MB / 282.7 MB Notification: Performance of NFInst.instantiate(Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b): time 0.01261/0.01263, allocations: 17.72 MB / 336.2 MB, free: 4.523 MB / 298.7 MB Notification: Performance of NFInst.instExpressions: time 0.01099/0.02362, allocations: 5.992 MB / 342.2 MB, free: 14.51 MB / 314.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.003134/0.02675, allocations: 202.8 kB / 342.4 MB, free: 14.31 MB / 314.7 MB Notification: Performance of NFTyping.typeComponents: time 0.006377/0.03313, allocations: 6.514 MB / 348.9 MB, free: 7.773 MB / 314.7 MB Notification: Performance of NFTyping.typeBindings: time 0.006761/0.03989, allocations: 3.661 MB / 352.6 MB, free: 4.098 MB / 314.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.003326/0.04322, allocations: 1.899 MB / 354.5 MB, free: 2.195 MB / 314.7 MB Notification: Performance of NFFlatten.flatten: time 0.01385/0.05706, allocations: 14.56 MB / 369 MB, free: 3.609 MB / 330.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.009158/0.06622, allocations: 7.822 MB / 376.8 MB, free: 11.7 MB / 346.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.01097/0.07719, allocations: 5.808 MB / 382.6 MB, free: 5.875 MB / 346.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.007103/0.08429, allocations: 5.83 MB / 388.5 MB, free: 32 kB / 346.7 MB Notification: Performance of NFPackage.collectConstants: time 0.002463/0.08675, allocations: 0.7774 MB / 389.3 MB, free: 15.25 MB / 362.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.004133/0.09089, allocations: 1.705 MB / 391 MB, free: 13.55 MB / 362.7 MB Notification: Performance of NFScalarize.scalarize: time 0.005393/0.09628, allocations: 4.816 MB / 395.8 MB, free: 8.719 MB / 362.7 MB Notification: Performance of NFVerifyModel.verify: time 0.005112/0.1014, allocations: 3.202 MB / 399 MB, free: 5.508 MB / 362.7 MB Notification: Performance of NFConvertDAE.convert: time 0.01394/0.1153, allocations: 15.29 MB / 414.3 MB, free: 6.164 MB / 378.7 MB Notification: Performance of FrontEnd - DAE generated: time 6.382e-06/0.1153, allocations: 0 / 414.3 MB, free: 6.164 MB / 378.7 MB Notification: Performance of FrontEnd: time 1.854e-06/0.1153, allocations: 0 / 414.3 MB, free: 6.164 MB / 378.7 MB Notification: Performance of Transformations before backend: time 0.0004615/0.1158, allocations: 3.938 kB / 414.3 MB, free: 6.16 MB / 378.7 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 0.02373/0.1395, allocations: 11.19 MB / 425.5 MB, free: 10.88 MB / 394.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.696e-05/0.1396, allocations: 12.92 kB / 425.5 MB, free: 10.87 MB / 394.7 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.002493/0.1421, allocations: 1.193 MB / 426.7 MB, free: 9.664 MB / 394.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.1303/0.2724, allocations: 25.55 MB / 452.2 MB, free: 80 kB / 410.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.2618/0.5342, allocations: 8.243 MB / 460.5 MB, free: 111.7 MB / 410.8 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002135/0.5344, allocations: 449.3 kB / 460.9 MB, free: 111.6 MB / 410.8 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001285/0.5357, allocations: 0.6068 MB / 461.5 MB, free: 111.4 MB / 410.8 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01741/0.5531, allocations: 17.08 MB / 478.6 MB, free: 95.51 MB / 410.8 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001839/0.5533, allocations: 99.3 kB / 478.7 MB, free: 95.41 MB / 410.8 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004827/0.5537, allocations: 283.5 kB / 479 MB, free: 95.18 MB / 410.8 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.00196/0.5557, allocations: 2.853 MB / 481.8 MB, free: 92.34 MB / 410.8 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01575/0.5715, allocations: 13.26 MB / 495.1 MB, free: 79.09 MB / 410.8 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 0.05285/0.6243, allocations: 64.68 MB / 0.5466 GB, free: 13.52 MB / 410.8 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01076/0.6351, allocations: 7.498 MB / 0.554 GB, free: 6.031 MB / 410.8 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.003241/0.6383, allocations: 4.062 MB / 0.5579 GB, free: 1.957 MB / 410.8 MB Notification: Performance of preOpt evalFunc (simulation): time 0.01537/0.6537, allocations: 10.97 MB / 0.5686 GB, free: 7.102 MB / 426.8 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.125e-05/0.6537, allocations: 64.56 kB / 0.5687 GB, free: 7.031 MB / 426.8 MB Notification: Performance of pre-optimization done (n=294): time 6.392e-06/0.6537, allocations: 0 / 0.5687 GB, free: 7.031 MB / 426.8 MB Notification: Performance of matching and sorting (n=360): time 0.1072/0.761, allocations: 52.48 MB / 0.62 GB, free: 3 MB / 474.8 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001401/0.7611, allocations: 406.2 kB / 0.6203 GB, free: 2.516 MB / 474.8 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.1534/0.9145, allocations: 8.666 MB / 0.6288 GB, free: 163.2 MB / 474.8 MB Notification: Performance of collectPreVariables (initialization): time 0.0007811/0.9153, allocations: 81.48 kB / 0.6289 GB, free: 163.2 MB / 474.8 MB Notification: Performance of collectInitialEqns (initialization): time 0.002374/0.9177, allocations: 5.485 MB / 0.6342 GB, free: 160.6 MB / 474.8 MB Notification: Performance of collectInitialBindings (initialization): time 0.001386/0.919, allocations: 1.354 MB / 0.6356 GB, free: 159.7 MB / 474.8 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.00194/0.921, allocations: 1.692 MB / 0.6372 GB, free: 158.8 MB / 474.8 MB Notification: Performance of setup shared object (initialization): time 3.35e-05/0.921, allocations: 301.1 kB / 0.6375 GB, free: 158.5 MB / 474.8 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003754/0.9248, allocations: 4.128 MB / 0.6415 GB, free: 157.1 MB / 474.8 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004819/0.9296, allocations: 9.091 MB / 0.6504 GB, free: 149 MB / 474.8 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.009937/0.9395, allocations: 13.95 MB / 0.664 GB, free: 135.2 MB / 474.8 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001307/0.9397, allocations: 48 kB / 0.6641 GB, free: 135.2 MB / 474.8 MB Notification: Performance of matching and sorting (n=1107) (initialization): time 0.02245/0.9621, allocations: 17.83 MB / 0.6815 GB, free: 119.4 MB / 474.8 MB Notification: Performance of prepare postOptimizeDAE: time 7.363e-05/0.9622, allocations: 72 kB / 0.6816 GB, free: 119.3 MB / 474.8 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001151/0.9623, allocations: 164 kB / 0.6817 GB, free: 119.2 MB / 474.8 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.009269/0.9716, allocations: 6.072 MB / 0.6876 GB, free: 113.1 MB / 474.8 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003669/0.9752, allocations: 1.821 MB / 0.6894 GB, free: 111.2 MB / 474.8 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02378/0.999, allocations: 32.32 MB / 0.721 GB, free: 78.59 MB / 474.8 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005607/1.005, allocations: 0.6554 MB / 0.7216 GB, free: 77.94 MB / 474.8 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0009436/1.006, allocations: 488 kB / 0.7221 GB, free: 77.46 MB / 474.8 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 743 * 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],b2.cylinderColor[3],b2.cylinderColor[2],b2.cylinderColor[1],b1.cylinderColor[3],b1.cylinderColor[2],b1.cylinderColor[1],cylPosition.color[3],cylPosition.color[2],cylPosition.color[1],mid.color[3],mid.color[2],mid.color[1],crank4.color[3],crank4.color[2],crank4.color[1],crank4.body.sphereColor[3],crank4.body.sphereColor[2],crank4.body.sphereColor[1],crank3.color[3],crank3.color[2],crank3.color[1],crank3.body.sphereColor[3],crank3.body.sphereColor[2],crank3.body.sphereColor[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],bearing.cylinderColor[3],bearing.cylinderColor[2],bearing.cylinderColor[1],connectingRod.color[3],connectingRod.color[2],connectingRod.color[1],connectingRod.body.sphereColor[3],connectingRod.body.sphereColor[2],connectingRod.body.sphereColor[1],piston.color[3],piston.color[2],piston.color[1],piston.body.sphereColor[3],piston.body.sphereColor[2],piston.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]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (968): * Single equations (assignments): 962 * 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 {(8,96,51.6%), (3,5,88.9%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(2,4)} Notification: Performance of prepare postOptimizeDAE: time 0.004463/1.01, allocations: 3.579 MB / 0.7256 GB, free: 73.87 MB / 474.8 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001352/1.011, allocations: 0.7143 MB / 0.7263 GB, free: 73.15 MB / 474.8 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01352/1.025, allocations: 12.02 MB / 0.738 GB, free: 61.07 MB / 474.8 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.478e-05/1.025, allocations: 39.66 kB / 0.7381 GB, free: 61.03 MB / 474.8 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.317e-05/1.025, allocations: 23.94 kB / 0.7381 GB, free: 61.01 MB / 474.8 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.996e-05/1.025, allocations: 15.94 kB / 0.7381 GB, free: 60.99 MB / 474.8 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02998/1.055, allocations: 25.05 MB / 0.7626 GB, free: 35.55 MB / 474.8 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.753e-05/1.055, allocations: 8 kB / 0.7626 GB, free: 35.54 MB / 474.8 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001254/1.056, allocations: 474.7 kB / 0.763 GB, free: 35.08 MB / 474.8 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.008875/1.065, allocations: 5.702 MB / 0.7686 GB, free: 29.37 MB / 474.8 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0004807/1.066, allocations: 60 kB / 0.7687 GB, free: 29.31 MB / 474.8 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.1814/1.247, allocations: 31.15 MB / 0.7991 GB, free: 143.5 MB / 474.8 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.849e-06/1.247, allocations: 11.5 kB / 0.7991 GB, free: 143.5 MB / 474.8 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01917/1.266, allocations: 17.36 MB / 0.816 GB, free: 138.3 MB / 474.8 MB Notification: Performance of postOpt removeConstants (simulation): time 0.003667/1.27, allocations: 1.449 MB / 0.8175 GB, free: 138 MB / 474.8 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001635/1.272, allocations: 64.34 kB / 0.8175 GB, free: 137.9 MB / 474.8 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003102/1.275, allocations: 385.6 kB / 0.8179 GB, free: 137.9 MB / 474.8 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0007273/1.275, allocations: 266.4 kB / 0.8181 GB, free: 137.8 MB / 474.8 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001986/1.276, allocations: 98.78 kB / 0.8182 GB, free: 137.8 MB / 474.8 MB Notification: Performance of sorting global known variables: time 0.006101/1.282, allocations: 5.544 MB / 0.8236 GB, free: 136 MB / 474.8 MB Notification: Performance of sort global known variables: time 1.91e-07/1.282, allocations: 0 / 0.8236 GB, free: 136 MB / 474.8 MB Notification: Performance of remove unused functions: time 0.007786/1.289, allocations: 2.374 MB / 0.826 GB, free: 135 MB / 474.8 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 26 * 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 (232): * Single equations (assignments): 226 * 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 {(7,90,55.1%), (2,4,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(2,6)} Notification: Performance of Backend phase and start with SimCode phase: time 0.01809/1.308, allocations: 18.1 MB / 0.8436 GB, free: 120.1 MB / 474.8 MB Notification: Performance of simCode: created initialization part: time 0.01057/1.318, allocations: 10.52 MB / 0.8539 GB, free: 109.6 MB / 474.8 MB Notification: Performance of simCode: created event and clocks part: time 1.016e-05/1.318, allocations: 1.422 kB / 0.8539 GB, free: 109.6 MB / 474.8 MB Notification: Performance of simCode: created simulation system equations: time 0.004565/1.323, allocations: 4.624 MB / 0.8584 GB, free: 105 MB / 474.8 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004731/1.327, allocations: 1.123 MB / 0.8595 GB, free: 103.9 MB / 474.8 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1065/1.434, allocations: 98.89 MB / 0.9561 GB, free: 13.56 MB / 490.8 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.004587/1.439, allocations: 5.278 MB / 0.9612 GB, free: 8.246 MB / 490.8 MB Notification: Performance of simCode: alias equations: time 0.004201/1.443, allocations: 2.752 MB / 0.9639 GB, free: 5.488 MB / 490.8 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.1393/1.582, allocations: 3.936 MB / 0.9678 GB, free: 156.4 MB / 490.8 MB Notification: Performance of SimCode: time 1.172e-06/1.582, allocations: 1.531 kB / 0.9678 GB, free: 156.4 MB / 490.8 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1552/1.737, allocations: 174.7 MB / 1.138 GB, free: 6.309 MB / 490.8 MB Notification: Performance of buildModelFMU: Generate platform static: time 16.36/18.09, allocations: 7.969 kB / 1.138 GB, free: 6.301 MB / 490.8 MB " [Timeout remaining time 642] (rm -f Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.pipe ; mkfifo Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.pipe ; head -c 1048576 < Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.pipe >> ../files/Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b_res.mat --tempDir=temp_Modelica_4_0_0_Modelica_Mechanics_MultiBody_Examples_Loops_Engine1b_fmu --startTime=0 --stopTime=0.5 --stepSize=9.94431e-05 --timeout=50 --tolerance=1e-06 Modelica_4_0_0_Modelica_Mechanics_MultiBody_Examples_Loops_Engine1b.fmu > Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.pipe 2>&1) [Timeout 52.5] diffSimulationResults("Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.0.0/Modelica/Mechanics/MultiBody/Examples/Loops/Engine1b/Engine1b.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 659] Reference file matches [Calling sys.exit(0), Time elapsed: 21.252052450552583]