Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.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 0.00132/0.00132, allocations: 83.75 kB / 21.19 MB, free: 3.375 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 0.001434/0.001434, allocations: 165 kB / 24.56 MB, free: 12 kB / 18.57 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 0.9581/0.9581, allocations: 177.2 MB / 205 MB, free: 5.289 MB / 186.7 MB " [Timeout remaining time 179] 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(Modelica.Fluid.Examples.TraceSubstances.RoomCO2,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|volume.medium.T|volume.medium.Xi.[0-9,]+.|volume.medium.p",fileNamePrefix="Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2") translateModel(Modelica.Fluid.Examples.TraceSubstances.RoomCO2,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|volume.medium.T|volume.medium.Xi.[0-9,]+.|volume.medium.p",fileNamePrefix="Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.733e-06/1.733e-06, allocations: 0 / 273 MB, free: 1.41 MB / 250.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 2.082e-05/2.255e-05, allocations: 5.828 kB / 273 MB, free: 1.406 MB / 250.7 MB Notification: Performance of NFInst.instantiate(Modelica.Fluid.Examples.TraceSubstances.RoomCO2): time 0.2764/0.2765, allocations: 151.3 MB / 424.3 MB, free: 10.3 MB / 378.7 MB Notification: Performance of NFInst.instExpressions: time 0.009059/0.2855, allocations: 5.734 MB / 430 MB, free: 4.586 MB / 378.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005739/0.2861, allocations: 27.75 kB / 430 MB, free: 4.559 MB / 378.7 MB Notification: Performance of NFTyping.typeComponents: time 0.000623/0.2867, allocations: 262.2 kB / 430.3 MB, free: 4.301 MB / 378.7 MB Notification: Performance of NFTyping.typeBindings: time 0.003775/0.2905, allocations: 2.04 MB / 432.3 MB, free: 2.25 MB / 378.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.003113/0.2936, allocations: 1.977 MB / 434.3 MB, free: 276 kB / 378.7 MB Notification: Performance of NFFlatten.flatten: time 0.1717/0.4653, allocations: 2.609 MB / 436.9 MB, free: 4.109 MB / 378.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001356/0.4667, allocations: 0.6894 MB / 437.6 MB, free: 4.078 MB / 378.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.002988/0.4696, allocations: 1.477 MB / 439.1 MB, free: 4.078 MB / 378.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.001887/0.4715, allocations: 1.064 MB / 440.2 MB, free: 4.078 MB / 378.7 MB Notification: Performance of NFPackage.collectConstants: time 0.000377/0.4719, allocations: 119.8 kB / 440.3 MB, free: 4.078 MB / 378.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.004319/0.4762, allocations: 2.239 MB / 442.5 MB, free: 4.078 MB / 378.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0005882/0.4768, allocations: 0.5779 MB / 443.1 MB, free: 4.078 MB / 378.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0008157/0.4776, allocations: 493.3 kB / 443.6 MB, free: 4.078 MB / 378.7 MB Notification: Performance of NFConvertDAE.convert: time 0.003829/0.4815, allocations: 2.76 MB / 446.3 MB, free: 3.938 MB / 378.7 MB Notification: Performance of FrontEnd - DAE generated: time 4.498e-06/0.4815, allocations: 0.9375 kB / 446.3 MB, free: 3.938 MB / 378.7 MB Notification: Performance of FrontEnd: time 1.042e-06/0.4815, allocations: 0 / 446.3 MB, free: 3.938 MB / 378.7 MB Notification: Performance of Transformations before backend: time 2.645e-05/0.4815, allocations: 0.9062 kB / 446.3 MB, free: 3.938 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: 228 * Number of variables: 228 Notification: Performance of Generate backend data structure: time 0.003145/0.4846, allocations: 1.842 MB / 448.2 MB, free: 18.98 MB / 394.7 MB Notification: Performance of prepare preOptimizeDAE: time 3.8e-05/0.4847, allocations: 10.38 kB / 448.2 MB, free: 18.98 MB / 394.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0004619/0.4851, allocations: 215.5 kB / 448.4 MB, free: 18.91 MB / 394.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009028/0.486, allocations: 0.6609 MB / 449.1 MB, free: 18.68 MB / 394.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001191/0.4862, allocations: 182.1 kB / 449.2 MB, free: 18.56 MB / 394.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001487/0.4863, allocations: 96.36 kB / 449.3 MB, free: 18.56 MB / 394.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00147/0.4878, allocations: 1.406 MB / 450.7 MB, free: 17.74 MB / 394.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.353e-05/0.4878, allocations: 3.188 kB / 450.7 MB, free: 17.74 MB / 394.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.223e-05/0.4879, allocations: 41.5 kB / 450.8 MB, free: 17.74 MB / 394.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.182e-05/0.488, allocations: 75.59 kB / 450.9 MB, free: 17.73 MB / 394.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00118/0.4892, allocations: 0.6697 MB / 451.5 MB, free: 17.72 MB / 394.7 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 0.004916/0.4941, allocations: 4.627 MB / 456.2 MB, free: 15.21 MB / 394.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0009867/0.4951, allocations: 0.5573 MB / 456.7 MB, free: 15.16 MB / 394.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003701/0.4954, allocations: 227.7 kB / 456.9 MB, free: 15.14 MB / 394.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0002779/0.4957, allocations: 137.5 kB / 457.1 MB, free: 15.14 MB / 394.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.384e-05/0.4958, allocations: 56.38 kB / 457.1 MB, free: 15.1 MB / 394.7 MB Notification: Performance of preOpt simplifyInStream (simulation): time 0.000215/0.496, allocations: 81.42 kB / 457.2 MB, free: 15.06 MB / 394.7 MB Notification: Performance of pre-optimization done (n=84): time 3.216e-06/0.496, allocations: 0 / 457.2 MB, free: 15.06 MB / 394.7 MB Notification: Performance of matching and sorting (n=96): time 0.00662/0.5026, allocations: 2.774 MB / 460 MB, free: 14.63 MB / 394.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 5.582e-05/0.5027, allocations: 114.4 kB / 460.1 MB, free: 14.51 MB / 394.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005136/0.5032, allocations: 0.627 MB / 460.7 MB, free: 14.29 MB / 394.7 MB Notification: Performance of collectPreVariables (initialization): time 7.328e-05/0.5032, allocations: 45.52 kB / 460.8 MB, free: 14.26 MB / 394.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002304/0.5035, allocations: 0.5152 MB / 461.3 MB, free: 13.94 MB / 394.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001802/0.5037, allocations: 356.1 kB / 461.6 MB, free: 13.71 MB / 394.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000313/0.504, allocations: 256.1 kB / 461.9 MB, free: 13.68 MB / 394.7 MB Notification: Performance of setup shared object (initialization): time 0.0002158/0.5042, allocations: 0.5766 MB / 462.4 MB, free: 13.18 MB / 394.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005021/0.5047, allocations: 297.5 kB / 462.7 MB, free: 13.11 MB / 394.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006673/0.5054, allocations: 0.8271 MB / 463.6 MB, free: 12.4 MB / 394.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001173/0.5065, allocations: 1.059 MB / 464.6 MB, free: 11.78 MB / 394.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.031e-06/0.5065, allocations: 5.875 kB / 464.6 MB, free: 11.78 MB / 394.7 MB Notification: Performance of matching and sorting (n=155) (initialization): time 0.001848/0.5084, allocations: 1.207 MB / 465.8 MB, free: 11.54 MB / 394.7 MB Notification: Performance of prepare postOptimizeDAE: time 5.113e-05/0.5084, allocations: 71.42 kB / 465.9 MB, free: 11.48 MB / 394.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.323e-05/0.5084, allocations: 12.16 kB / 465.9 MB, free: 11.48 MB / 394.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006339/0.5091, allocations: 168.2 kB / 466.1 MB, free: 11.47 MB / 394.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007282/0.5098, allocations: 267.2 kB / 466.3 MB, free: 11.47 MB / 394.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006466/0.5105, allocations: 0.9145 MB / 467.3 MB, free: 10.66 MB / 394.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005193/0.511, allocations: 54.36 kB / 467.3 MB, free: 10.66 MB / 394.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001103/0.5111, allocations: 66.89 kB / 467.4 MB, free: 10.66 MB / 394.7 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0006273/0.5117, allocations: 438.4 kB / 467.8 MB, free: 10.47 MB / 394.7 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0008182/0.5125, allocations: 0.8195 MB / 468.6 MB, free: 9.77 MB / 394.7 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001228/0.5138, allocations: 1.055 MB / 469.7 MB, free: 9.145 MB / 394.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.012e-06/0.5138, allocations: 3.031 kB / 469.7 MB, free: 9.145 MB / 394.7 MB Notification: Performance of matching and sorting (n=155) (initialization_lambda0): time 0.001792/0.5156, allocations: 1.197 MB / 470.9 MB, free: 8.91 MB / 394.7 MB Notification: Performance of prepare postOptimizeDAE: time 3.961e-05/0.5156, allocations: 74.95 kB / 471 MB, free: 8.844 MB / 394.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.797e-06/0.5156, allocations: 9.344 kB / 471 MB, free: 8.844 MB / 394.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005505/0.5162, allocations: 173 kB / 471.1 MB, free: 8.828 MB / 394.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006963/0.5169, allocations: 269.3 kB / 471.4 MB, free: 8.828 MB / 394.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005861/0.5174, allocations: 0.9027 MB / 472.3 MB, free: 8.031 MB / 394.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000523/0.518, allocations: 53.44 kB / 472.4 MB, free: 8.031 MB / 394.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001027/0.5181, allocations: 67.58 kB / 472.4 MB, free: 8.031 MB / 394.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 46 * Number of states: 0 () * Number of discrete variables: 6 (traceVolume.ind,traceSource.ind,volume.regularFlow[1],volume.regularFlow[2],volume.inFlow[2],volume.inFlow[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (148): * Single equations (assignments): 145 * Array equations: 0 * Algorithm blocks: 2 * Record equations: 0 * 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 {(2,6)} Notification: Performance of prepare postOptimizeDAE: time 0.0002531/0.5183, allocations: 355.7 kB / 472.8 MB, free: 7.754 MB / 394.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001988/0.5185, allocations: 123.1 kB / 472.9 MB, free: 7.707 MB / 394.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001949/0.5205, allocations: 1.253 MB / 474.1 MB, free: 7.543 MB / 394.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.115e-05/0.5205, allocations: 10.75 kB / 474.1 MB, free: 7.543 MB / 394.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.11e-06/0.5205, allocations: 1 kB / 474.1 MB, free: 7.543 MB / 394.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.709e-06/0.5205, allocations: 5.953 kB / 474.2 MB, free: 7.543 MB / 394.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002669/0.5232, allocations: 1.836 MB / 476 MB, free: 7.113 MB / 394.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.568e-06/0.5232, allocations: 3.5 kB / 476 MB, free: 7.113 MB / 394.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000554/0.5237, allocations: 177.4 kB / 476.2 MB, free: 7.113 MB / 394.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0008194/0.5245, allocations: 256.9 kB / 476.4 MB, free: 7.09 MB / 394.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.46e-05/0.5246, allocations: 38.28 kB / 476.5 MB, free: 7.09 MB / 394.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0007192/0.5253, allocations: 0.8741 MB / 477.3 MB, free: 6.297 MB / 394.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.025e-06/0.5253, allocations: 5.969 kB / 477.3 MB, free: 6.297 MB / 394.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002713/0.528, allocations: 1.447 MB / 478.8 MB, free: 5.922 MB / 394.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0003688/0.5284, allocations: 216.3 kB / 479 MB, free: 5.871 MB / 394.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001145/0.5285, allocations: 27.14 kB / 479 MB, free: 5.871 MB / 394.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004967/0.529, allocations: 46.88 kB / 479.1 MB, free: 5.871 MB / 394.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000135/0.5292, allocations: 78.22 kB / 479.1 MB, free: 5.863 MB / 394.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.896e-05/0.5293, allocations: 48.36 kB / 479.2 MB, free: 5.863 MB / 394.7 MB Notification: Performance of sorting global known variables: time 0.000366/0.5296, allocations: 393.2 kB / 479.6 MB, free: 5.727 MB / 394.7 MB Notification: Performance of sort global known variables: time 8e-08/0.5296, allocations: 0 / 479.6 MB, free: 5.727 MB / 394.7 MB Notification: Performance of remove unused functions: time 0.001952/0.5316, allocations: 0.9514 MB / 480.5 MB, free: 5.613 MB / 394.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 4 (volume.medium.p,volume.medium.Xi[1],volume.medium.T,volume.mC_scaled[1]) * 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 (97): * Single equations (assignments): 94 * Array equations: 0 * 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 {(2,6)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001452/0.533, allocations: 0.8306 MB / 481.4 MB, free: 5.395 MB / 394.7 MB Notification: Performance of simCode: created initialization part: time 0.002117/0.5351, allocations: 1.657 MB / 483 MB, free: 4.965 MB / 394.7 MB Notification: Performance of simCode: created event and clocks part: time 3.907e-06/0.5351, allocations: 2.906 kB / 483 MB, free: 4.965 MB / 394.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0005818/0.5357, allocations: 409.7 kB / 483.4 MB, free: 4.941 MB / 394.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001211/0.5369, allocations: 491.2 kB / 483.9 MB, free: 4.895 MB / 394.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003177/0.5401, allocations: 1.994 MB / 485.9 MB, free: 4.09 MB / 394.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001831/0.5403, allocations: 263.2 kB / 486.1 MB, free: 4.012 MB / 394.7 MB Notification: Performance of simCode: alias equations: time 0.001048/0.5413, allocations: 0.5992 MB / 486.7 MB, free: 3.941 MB / 394.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002386/0.5416, allocations: 103.1 kB / 486.8 MB, free: 3.934 MB / 394.7 MB Notification: Performance of SimCode: time 1.122e-06/0.5416, allocations: 0 / 486.8 MB, free: 3.934 MB / 394.7 MB Notification: Performance of Templates: time 0.03257/0.5742, allocations: 31.96 MB / 0.5066 GB, free: 10.75 MB / 426.7 MB " [Timeout remaining time 659] make -j1 -f Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.makefile [Timeout 660] (rm -f Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.pipe ; mkfifo Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.pipe ; head -c 1048576 < Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.pipe >> ../files/Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.sim & ./Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2 -abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS > Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.pipe 2>&1) [Timeout 240] diffSimulationResults("Modelica_4.1.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.1.0/Modelica/Fluid/Examples/TraceSubstances/RoomCO2/RoomCO2.csv","",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 4.146127477753907]