Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.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 0.000922/0.000922, allocations: 84 kB / 21.18 MB, free: 3.398 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 0.001839/0.001839, allocations: 145.1 kB / 24.54 MB, free: 48 kB / 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 0.972/0.972, allocations: 173.4 MB / 201.1 MB, free: 9.348 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: 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_4.0.0_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_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.964e-06/1.964e-06, allocations: 0 / 268 MB, free: 6.465 MB / 250.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 2.551e-05/2.747e-05, allocations: 10.25 kB / 268 MB, free: 6.453 MB / 250.7 MB Notification: Performance of NFInst.instantiate(Modelica.Fluid.Examples.TraceSubstances.RoomCO2): time 0.2709/0.2709, allocations: 148.4 MB / 416.4 MB, free: 5.102 MB / 362.7 MB Notification: Performance of NFInst.instExpressions: time 0.007246/0.2782, allocations: 5.739 MB / 422.1 MB, free: 15.38 MB / 378.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0007581/0.2789, allocations: 31.69 kB / 422.2 MB, free: 15.34 MB / 378.7 MB Notification: Performance of NFTyping.typeComponents: time 0.0007286/0.2797, allocations: 238.4 kB / 422.4 MB, free: 15.11 MB / 378.7 MB Notification: Performance of NFTyping.typeBindings: time 0.004169/0.2838, allocations: 2.052 MB / 424.4 MB, free: 13.05 MB / 378.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.003484/0.2873, allocations: 1.993 MB / 426.4 MB, free: 11.05 MB / 378.7 MB Notification: Performance of NFFlatten.flatten: time 0.002889/0.2902, allocations: 2.617 MB / 429.1 MB, free: 8.422 MB / 378.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001084/0.2913, allocations: 0.6927 MB / 429.7 MB, free: 7.715 MB / 378.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.002183/0.2935, allocations: 1.446 MB / 431.2 MB, free: 6.266 MB / 378.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.001522/0.295, allocations: 1.072 MB / 432.3 MB, free: 5.191 MB / 378.7 MB Notification: Performance of NFPackage.collectConstants: time 0.0003274/0.2953, allocations: 120 kB / 432.4 MB, free: 5.074 MB / 378.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.003847/0.2992, allocations: 2.203 MB / 434.6 MB, free: 2.867 MB / 378.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0005213/0.2997, allocations: 0.5806 MB / 435.2 MB, free: 2.285 MB / 378.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0006894/0.3004, allocations: 499 kB / 435.7 MB, free: 1.797 MB / 378.7 MB Notification: Performance of NFConvertDAE.convert: time 0.1854/0.4858, allocations: 2.726 MB / 438.4 MB, free: 9.77 MB / 378.7 MB Notification: Performance of FrontEnd - DAE generated: time 4.659e-06/0.4858, allocations: 0 / 438.4 MB, free: 9.77 MB / 378.7 MB Notification: Performance of FrontEnd: time 2.014e-06/0.4858, allocations: 0.7188 kB / 438.4 MB, free: 9.77 MB / 378.7 MB Notification: Performance of Transformations before backend: time 5.677e-05/0.4858, allocations: 1.094 kB / 438.4 MB, free: 9.77 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 0.004804/0.4906, allocations: 1.828 MB / 440.2 MB, free: 8.812 MB / 378.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.621e-05/0.4907, allocations: 11.05 kB / 440.2 MB, free: 8.812 MB / 378.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0006243/0.4913, allocations: 219.9 kB / 440.4 MB, free: 8.738 MB / 378.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001145/0.4925, allocations: 0.6534 MB / 441.1 MB, free: 8.52 MB / 378.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001307/0.4926, allocations: 183.2 kB / 441.3 MB, free: 8.391 MB / 378.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000176/0.4928, allocations: 97.17 kB / 441.4 MB, free: 8.391 MB / 378.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001742/0.4945, allocations: 1.437 MB / 442.8 MB, free: 7.543 MB / 378.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.76e-05/0.4945, allocations: 2.375 kB / 442.8 MB, free: 7.543 MB / 378.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.984e-05/0.4946, allocations: 36.81 kB / 442.8 MB, free: 7.543 MB / 378.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.721e-05/0.4947, allocations: 79.72 kB / 442.9 MB, free: 7.535 MB / 378.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001436/0.4962, allocations: 0.6655 MB / 443.6 MB, free: 7.527 MB / 378.7 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 0.005204/0.5014, allocations: 4.628 MB / 448.2 MB, free: 5.039 MB / 378.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001025/0.5024, allocations: 0.5499 MB / 448.8 MB, free: 4.996 MB / 378.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003696/0.5028, allocations: 231 kB / 449 MB, free: 4.977 MB / 378.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0003318/0.5031, allocations: 137 kB / 449.1 MB, free: 4.969 MB / 378.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.342e-05/0.5031, allocations: 49.77 kB / 449.2 MB, free: 4.926 MB / 378.7 MB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0002573/0.5034, allocations: 84.59 kB / 449.3 MB, free: 4.887 MB / 378.7 MB Notification: Performance of pre-optimization done (n=84): time 3.667e-06/0.5034, allocations: 0 / 449.3 MB, free: 4.887 MB / 378.7 MB Notification: Performance of matching and sorting (n=96): time 0.006243/0.5096, allocations: 2.777 MB / 452 MB, free: 4.461 MB / 378.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.134e-05/0.5097, allocations: 117.4 kB / 452.1 MB, free: 4.332 MB / 378.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005347/0.5102, allocations: 0.6218 MB / 452.8 MB, free: 4.113 MB / 378.7 MB Notification: Performance of collectPreVariables (initialization): time 8.138e-05/0.5103, allocations: 47.95 kB / 452.8 MB, free: 4.082 MB / 378.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0003873/0.5107, allocations: 0.5092 MB / 453.3 MB, free: 19.76 MB / 394.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001807/0.5109, allocations: 356.6 kB / 453.7 MB, free: 19.54 MB / 394.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000287/0.5111, allocations: 263.2 kB / 453.9 MB, free: 19.5 MB / 394.7 MB Notification: Performance of setup shared object (initialization): time 0.00017/0.5113, allocations: 0.571 MB / 454.5 MB, free: 19 MB / 394.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004433/0.5118, allocations: 300.9 kB / 454.8 MB, free: 18.93 MB / 394.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005565/0.5123, allocations: 0.828 MB / 455.6 MB, free: 18.22 MB / 394.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001013/0.5133, allocations: 1.06 MB / 456.7 MB, free: 17.6 MB / 394.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.605e-06/0.5133, allocations: 5.531 kB / 456.7 MB, free: 17.6 MB / 394.7 MB Notification: Performance of matching and sorting (n=155) (initialization): time 0.001537/0.5149, allocations: 1.203 MB / 457.9 MB, free: 17.36 MB / 394.7 MB Notification: Performance of prepare postOptimizeDAE: time 4.851e-05/0.5149, allocations: 64.39 kB / 457.9 MB, free: 17.3 MB / 394.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.423e-05/0.5149, allocations: 16.98 kB / 458 MB, free: 17.3 MB / 394.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005232/0.5155, allocations: 174.3 kB / 458.1 MB, free: 17.29 MB / 394.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005508/0.516, allocations: 266.2 kB / 458.4 MB, free: 17.29 MB / 394.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005698/0.5166, allocations: 0.9063 MB / 459.3 MB, free: 16.48 MB / 394.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004502/0.517, allocations: 51.94 kB / 459.4 MB, free: 16.48 MB / 394.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.382e-05/0.5171, allocations: 72.77 kB / 459.4 MB, free: 16.48 MB / 394.7 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005551/0.5177, allocations: 438.3 kB / 459.9 MB, free: 16.29 MB / 394.7 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005231/0.5182, allocations: 0.8193 MB / 460.7 MB, free: 15.59 MB / 394.7 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.000983/0.5192, allocations: 1.049 MB / 461.7 MB, free: 14.97 MB / 394.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.642e-06/0.5192, allocations: 3.156 kB / 461.7 MB, free: 14.97 MB / 394.7 MB Notification: Performance of matching and sorting (n=155) (initialization_lambda0): time 0.001486/0.5207, allocations: 1.197 MB / 462.9 MB, free: 14.73 MB / 394.7 MB Notification: Performance of prepare postOptimizeDAE: time 3.559e-05/0.5207, allocations: 73.47 kB / 463 MB, free: 14.67 MB / 394.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.016e-05/0.5207, allocations: 13.14 kB / 463 MB, free: 14.66 MB / 394.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004528/0.5212, allocations: 171 kB / 463.2 MB, free: 14.65 MB / 394.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005195/0.5217, allocations: 274.2 kB / 463.4 MB, free: 14.65 MB / 394.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.000518/0.5222, allocations: 0.8994 MB / 464.3 MB, free: 13.86 MB / 394.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004491/0.5227, allocations: 50.83 kB / 464.4 MB, free: 13.86 MB / 394.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.113e-05/0.5227, allocations: 67.31 kB / 464.5 MB, free: 13.86 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 0.0003314/0.5231, allocations: 357.6 kB / 464.8 MB, free: 13.58 MB / 394.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001713/0.5232, allocations: 119 kB / 464.9 MB, free: 13.54 MB / 394.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001514/0.5248, allocations: 1.256 MB / 466.2 MB, free: 13.36 MB / 394.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.878e-06/0.5248, allocations: 13.16 kB / 466.2 MB, free: 13.36 MB / 394.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.975e-06/0.5248, allocations: 0 / 466.2 MB, free: 13.36 MB / 394.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.648e-06/0.5248, allocations: 9.984 kB / 466.2 MB, free: 13.36 MB / 394.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002311/0.5271, allocations: 1.848 MB / 468 MB, free: 12.93 MB / 394.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.088e-06/0.5271, allocations: 0.9688 kB / 468 MB, free: 12.93 MB / 394.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003936/0.5275, allocations: 176.2 kB / 468.2 MB, free: 12.93 MB / 394.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.000616/0.5281, allocations: 249.8 kB / 468.5 MB, free: 12.91 MB / 394.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.178e-05/0.5282, allocations: 38.09 kB / 468.5 MB, free: 12.91 MB / 394.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0004693/0.5286, allocations: 0.8786 MB / 469.4 MB, free: 12.11 MB / 394.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.795e-06/0.5287, allocations: 3.844 kB / 469.4 MB, free: 12.11 MB / 394.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002075/0.5307, allocations: 1.447 MB / 470.8 MB, free: 11.74 MB / 394.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0003183/0.531, allocations: 216 kB / 471 MB, free: 11.69 MB / 394.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.287e-05/0.5311, allocations: 31.12 kB / 471.1 MB, free: 11.69 MB / 394.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003609/0.5315, allocations: 44.72 kB / 471.1 MB, free: 11.69 MB / 394.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001073/0.5316, allocations: 76.77 kB / 471.2 MB, free: 11.68 MB / 394.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.319e-05/0.5317, allocations: 56.05 kB / 471.2 MB, free: 11.68 MB / 394.7 MB Notification: Performance of sorting global known variables: time 0.0005908/0.5323, allocations: 390.7 kB / 471.6 MB, free: 11.55 MB / 394.7 MB Notification: Performance of sort global known variables: time 5e-08/0.5323, allocations: 0.8125 kB / 471.6 MB, free: 11.55 MB / 394.7 MB Notification: Performance of remove unused functions: time 0.00215/0.5344, allocations: 0.9294 MB / 472.6 MB, free: 11.44 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 0.001605/0.536, allocations: 0.8139 MB / 473.4 MB, free: 11.23 MB / 394.7 MB Notification: Performance of simCode: created initialization part: time 0.002221/0.5382, allocations: 1.661 MB / 475 MB, free: 10.8 MB / 394.7 MB Notification: Performance of simCode: created event and clocks part: time 5.961e-06/0.5383, allocations: 3.906 kB / 475 MB, free: 10.79 MB / 394.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0005388/0.5388, allocations: 407.2 kB / 475.4 MB, free: 10.77 MB / 394.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00126/0.54, allocations: 0.4888 MB / 475.9 MB, free: 10.71 MB / 394.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003667/0.5437, allocations: 2.005 MB / 477.9 MB, free: 9.91 MB / 394.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001679/0.5439, allocations: 264.3 kB / 478.2 MB, free: 9.828 MB / 394.7 MB Notification: Performance of simCode: alias equations: time 0.001057/0.5449, allocations: 0.5878 MB / 478.8 MB, free: 9.773 MB / 394.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002295/0.5452, allocations: 100.5 kB / 478.9 MB, free: 9.766 MB / 394.7 MB Notification: Performance of SimCode: time 1.503e-06/0.5452, allocations: 0 / 478.9 MB, free: 9.766 MB / 394.7 MB Notification: Performance of Templates: time 0.0341/0.5793, allocations: 31.81 MB / 0.4987 GB, free: 8.984 MB / 410.7 MB " [Timeout remaining time 659] make -j1 -f Modelica_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.makefile [Timeout 660] (rm -f Modelica_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.pipe ; mkfifo Modelica_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.pipe ; head -c 1048576 < Modelica_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.pipe >> ../files/Modelica_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.sim & ./Modelica_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2 -abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS > Modelica_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2.pipe 2>&1) [Timeout 240] diffSimulationResults("Modelica_4.0.0_Modelica.Fluid.Examples.TraceSubstances.RoomCO2_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.0.0/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: 4.261948086321354]