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 0.001251/0.001251, allocations: 78.97 kB / 21.42 MB, free: 3.078 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 0.001006/0.001006, allocations: 147.5 kB / 24.81 MB, free: 9.27 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 0.988/0.988, allocations: 173.4 MB / 201.4 MB, free: 9.199 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 1.573e-06/1.573e-06, allocations: 0 / 268.4 MB, free: 6.211 MB / 250.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 1.688e-05/1.845e-05, allocations: 2.312 kB / 268.4 MB, free: 6.207 MB / 250.7 MB Notification: Performance of NFInst.instantiate(Modelica.Fluid.Examples.TraceSubstances.RoomCO2): time 0.2944/0.2944, allocations: 145.6 MB / 414 MB, free: 7.492 MB / 362.7 MB Notification: Performance of NFInst.instExpressions: time 0.00644/0.3008, allocations: 5.664 MB / 419.7 MB, free: 1.84 MB / 362.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004977/0.3013, allocations: 27.75 kB / 419.7 MB, free: 1.812 MB / 362.7 MB Notification: Performance of NFTyping.typeComponents: time 0.0005819/0.3019, allocations: 238.3 kB / 419.9 MB, free: 1.578 MB / 362.7 MB Notification: Performance of NFTyping.typeBindings: time 0.004224/0.3061, allocations: 2.052 MB / 422 MB, free: 15.52 MB / 378.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.003233/0.3093, allocations: 2.04 MB / 424 MB, free: 13.47 MB / 378.7 MB Notification: Performance of NFFlatten.flatten: time 0.002254/0.3116, allocations: 2.578 MB / 426.6 MB, free: 10.88 MB / 378.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.000791/0.3124, allocations: 0.7083 MB / 427.3 MB, free: 10.16 MB / 378.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.00193/0.3143, allocations: 1.594 MB / 428.9 MB, free: 8.562 MB / 378.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0008995/0.3152, allocations: 0.982 MB / 429.9 MB, free: 7.578 MB / 378.7 MB Notification: Performance of NFPackage.collectConstants: time 0.0001385/0.3154, allocations: 120 kB / 430 MB, free: 7.461 MB / 378.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002819/0.3182, allocations: 2.199 MB / 432.2 MB, free: 5.258 MB / 378.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0003947/0.3186, allocations: 0.5845 MB / 432.8 MB, free: 4.672 MB / 378.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0003834/0.319, allocations: 487 kB / 433.3 MB, free: 4.195 MB / 378.7 MB Notification: Performance of NFConvertDAE.convert: time 0.002816/0.3218, allocations: 2.734 MB / 436 MB, free: 1.453 MB / 378.7 MB Notification: Performance of FrontEnd - DAE generated: time 3.236e-06/0.3218, allocations: 4 kB / 436 MB, free: 1.449 MB / 378.7 MB Notification: Performance of FrontEnd: time 1.502e-06/0.3218, allocations: 0 / 436 MB, free: 1.449 MB / 378.7 MB Notification: Performance of Transformations before backend: time 9.017e-06/0.3218, allocations: 0 / 436 MB, free: 1.449 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 0.1664/0.4881, allocations: 1.807 MB / 437.8 MB, free: 20.82 MB / 378.7 MB Notification: Performance of prepare preOptimizeDAE: time 3.937e-05/0.4882, allocations: 9.281 kB / 437.8 MB, free: 20.82 MB / 378.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0005484/0.4887, allocations: 220 kB / 438 MB, free: 20.76 MB / 378.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009957/0.4897, allocations: 0.6205 MB / 438.6 MB, free: 20.57 MB / 378.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001172/0.4898, allocations: 184.2 kB / 438.8 MB, free: 20.45 MB / 378.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001475/0.49, allocations: 94.3 kB / 438.9 MB, free: 20.45 MB / 378.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001376/0.4914, allocations: 1.349 MB / 440.3 MB, free: 19.6 MB / 378.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.481e-05/0.4914, allocations: 4.75 kB / 440.3 MB, free: 19.6 MB / 378.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.071e-05/0.4915, allocations: 39.94 kB / 440.3 MB, free: 19.6 MB / 378.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001012/0.4916, allocations: 70.78 kB / 440.4 MB, free: 19.6 MB / 378.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009771/0.4926, allocations: 0.5312 MB / 440.9 MB, free: 19.57 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 0.004516/0.4971, allocations: 4.572 MB / 445.5 MB, free: 17.13 MB / 378.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0008552/0.4979, allocations: 0.5068 MB / 446 MB, free: 17.07 MB / 378.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002651/0.4982, allocations: 192.2 kB / 446.2 MB, free: 17.05 MB / 378.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0002945/0.4985, allocations: 150 kB / 446.3 MB, free: 17.04 MB / 378.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.13e-05/0.4985, allocations: 49.55 kB / 446.4 MB, free: 17 MB / 378.7 MB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0002016/0.4987, allocations: 84.11 kB / 446.4 MB, free: 16.98 MB / 378.7 MB Notification: Performance of pre-optimization done (n=84): time 3.126e-06/0.4987, allocations: 3.906 kB / 446.5 MB, free: 16.98 MB / 378.7 MB Notification: Performance of matching and sorting (n=96): time 0.005907/0.5046, allocations: 2.692 MB / 449.1 MB, free: 16.66 MB / 378.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 3.131e-05/0.5047, allocations: 113.8 kB / 449.3 MB, free: 16.54 MB / 378.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003818/0.505, allocations: 0.612 MB / 449.9 MB, free: 16.33 MB / 378.7 MB Notification: Performance of collectPreVariables (initialization): time 6.528e-05/0.5051, allocations: 45.84 kB / 449.9 MB, free: 16.3 MB / 378.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002046/0.5053, allocations: 0.5184 MB / 450.4 MB, free: 16.03 MB / 378.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001774/0.5055, allocations: 360.1 kB / 450.8 MB, free: 15.83 MB / 378.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002689/0.5058, allocations: 264.6 kB / 451 MB, free: 15.8 MB / 378.7 MB Notification: Performance of setup shared object (initialization): time 0.0001175/0.5059, allocations: 0.5785 MB / 451.6 MB, free: 15.3 MB / 378.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002911/0.5062, allocations: 248.2 kB / 451.9 MB, free: 15.22 MB / 378.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004526/0.5066, allocations: 0.7753 MB / 452.6 MB, free: 14.52 MB / 378.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007819/0.5074, allocations: 0.9709 MB / 453.6 MB, free: 13.9 MB / 378.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.022e-06/0.5074, allocations: 1.906 kB / 453.6 MB, free: 13.9 MB / 378.7 MB Notification: Performance of matching and sorting (n=155) (initialization): time 0.002025/0.5094, allocations: 1.329 MB / 454.9 MB, free: 13.66 MB / 378.7 MB Notification: Performance of prepare postOptimizeDAE: time 3.577e-05/0.5095, allocations: 61.78 kB / 455 MB, free: 13.6 MB / 378.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.375e-05/0.5095, allocations: 13.23 kB / 455 MB, free: 13.6 MB / 378.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009967/0.5105, allocations: 388.5 kB / 455.4 MB, free: 13.58 MB / 378.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005366/0.511, allocations: 265.2 kB / 455.7 MB, free: 13.58 MB / 378.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001956/0.513, allocations: 2.584 MB / 458.2 MB, free: 11.6 MB / 378.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004169/0.5134, allocations: 50.56 kB / 458.3 MB, free: 11.6 MB / 378.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.203e-05/0.5135, allocations: 58.02 kB / 458.3 MB, free: 11.6 MB / 378.7 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0003808/0.5139, allocations: 389 kB / 458.7 MB, free: 11.41 MB / 378.7 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004157/0.5143, allocations: 0.7685 MB / 459.5 MB, free: 10.7 MB / 378.7 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007411/0.515, allocations: 0.9661 MB / 460.5 MB, free: 10.08 MB / 378.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.562e-06/0.515, allocations: 4 kB / 460.5 MB, free: 10.08 MB / 378.7 MB Notification: Performance of matching and sorting (n=155) (initialization_lambda0): time 0.001902/0.5169, allocations: 1.327 MB / 461.8 MB, free: 9.836 MB / 378.7 MB Notification: Performance of prepare postOptimizeDAE: time 2.491e-05/0.5169, allocations: 60.09 kB / 461.8 MB, free: 9.773 MB / 378.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.103e-05/0.517, allocations: 12.88 kB / 461.9 MB, free: 9.773 MB / 378.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009228/0.5179, allocations: 388.5 kB / 462.2 MB, free: 9.754 MB / 378.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005023/0.5184, allocations: 263.4 kB / 462.5 MB, free: 9.754 MB / 378.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001832/0.5202, allocations: 2.587 MB / 465.1 MB, free: 7.781 MB / 378.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003947/0.5206, allocations: 50.94 kB / 465.1 MB, free: 7.781 MB / 378.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.775e-05/0.5207, allocations: 58.91 kB / 465.2 MB, free: 7.781 MB / 378.7 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): 1 system {(2,6,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0002283/0.5209, allocations: 355.9 kB / 465.5 MB, free: 7.504 MB / 378.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001511/0.5211, allocations: 122.7 kB / 465.7 MB, free: 7.457 MB / 378.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001931/0.523, allocations: 1.401 MB / 467.1 MB, free: 7.293 MB / 378.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.688e-06/0.523, allocations: 11.84 kB / 467.1 MB, free: 7.293 MB / 378.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.308e-06/0.523, allocations: 2 kB / 467.1 MB, free: 7.293 MB / 378.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.647e-06/0.523, allocations: 6.734 kB / 467.1 MB, free: 7.293 MB / 378.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002394/0.5254, allocations: 1.842 MB / 468.9 MB, free: 6.887 MB / 378.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.912e-06/0.5254, allocations: 6.688 kB / 468.9 MB, free: 6.883 MB / 378.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003921/0.5258, allocations: 174.2 kB / 469.1 MB, free: 6.883 MB / 378.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.001044/0.5269, allocations: 449.3 kB / 469.5 MB, free: 6.859 MB / 378.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.184e-05/0.5269, allocations: 37.17 kB / 469.6 MB, free: 6.859 MB / 378.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00159/0.5285, allocations: 2.495 MB / 472.1 MB, free: 4.895 MB / 378.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.384e-06/0.5285, allocations: 3.938 kB / 472.1 MB, free: 4.891 MB / 378.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001772/0.5303, allocations: 1.341 MB / 473.4 MB, free: 4.512 MB / 378.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0002341/0.5305, allocations: 201.2 kB / 473.6 MB, free: 4.461 MB / 378.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.743e-05/0.5306, allocations: 28.94 kB / 473.6 MB, free: 4.461 MB / 378.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000347/0.5309, allocations: 47.75 kB / 473.7 MB, free: 4.457 MB / 378.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001149/0.5311, allocations: 83.11 kB / 473.8 MB, free: 4.457 MB / 378.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.736e-05/0.5311, allocations: 41.17 kB / 473.8 MB, free: 4.457 MB / 378.7 MB Notification: Performance of sorting global known variables: time 0.0001957/0.5313, allocations: 368.3 kB / 474.2 MB, free: 4.32 MB / 378.7 MB Notification: Performance of sort global known variables: time 6.1e-08/0.5313, allocations: 0.7812 kB / 474.2 MB, free: 4.32 MB / 378.7 MB Notification: Performance of remove unused functions: time 0.001873/0.5332, allocations: 0.9435 MB / 475.1 MB, free: 4.211 MB / 378.7 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): 1 system {(2,6,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001246/0.5344, allocations: 0.8289 MB / 475.9 MB, free: 4 MB / 378.7 MB Notification: Performance of simCode: created initialization part: time 0.001758/0.5362, allocations: 1.903 MB / 477.8 MB, free: 3.211 MB / 378.7 MB Notification: Performance of simCode: created event and clocks part: time 6.102e-06/0.5362, allocations: 4.75 kB / 477.8 MB, free: 3.211 MB / 378.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0005162/0.5367, allocations: 0.5477 MB / 478.4 MB, free: 3.016 MB / 378.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001154/0.5379, allocations: 487 kB / 478.9 MB, free: 2.957 MB / 378.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002947/0.5408, allocations: 2 MB / 480.9 MB, free: 2.148 MB / 378.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001894/0.541, allocations: 276 kB / 481.1 MB, free: 2.059 MB / 378.7 MB Notification: Performance of simCode: alias equations: time 0.000783/0.5418, allocations: 385.3 kB / 481.5 MB, free: 1.961 MB / 378.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008685/0.5427, allocations: 0.5286 MB / 482 MB, free: 1.895 MB / 378.7 MB Notification: Performance of SimCode: time 6.61e-07/0.5427, allocations: 0 / 482 MB, free: 1.895 MB / 378.7 MB Notification: Performance of Templates: time 0.03964/0.5823, allocations: 38.21 MB / 0.5081 GB, free: 4.629 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: 4.261137768626213]