Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods.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 0.001308/0.001308, allocations: 80.88 kB / 19.94 MB, free: 4.547 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 0.001545/0.001545, allocations: 181 kB / 23.36 MB, free: 1.133 MB / 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 1.033/1.033, allocations: 177.1 MB / 203.8 MB, free: 5.488 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo): time 0.002465/0.002465, allocations: 241.6 kB / 260.5 MB, free: 12.7 MB / 250.7 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo): time 0.704/0.704, allocations: 138.4 MB / 402.2 MB, free: 0.5547 MB / 362.7 MB " [Timeout remaining time 179] Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 master/package.mo) 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(BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods") translateModel(BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.292e-06/1.292e-06, allocations: 0 / 462.4 MB, free: 0.8672 MB / 410.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 9.207e-06/1.05e-05, allocations: 2.859 kB / 462.4 MB, free: 0.8633 MB / 410.7 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods): time 0.00423/0.004241, allocations: 4.736 MB / 467.1 MB, free: 13.74 MB / 426.7 MB Notification: Performance of NFInst.instExpressions: time 0.007255/0.0115, allocations: 5.65 MB / 472.8 MB, free: 8.188 MB / 426.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005353/0.01203, allocations: 36.53 kB / 472.8 MB, free: 8.152 MB / 426.7 MB Notification: Performance of NFTyping.typeComponents: time 0.002274/0.0143, allocations: 1.307 MB / 474.1 MB, free: 6.848 MB / 426.7 MB Notification: Performance of NFTyping.typeBindings: time 0.001776/0.01608, allocations: 1.371 MB / 475.5 MB, free: 5.484 MB / 426.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.002075/0.01816, allocations: 1.574 MB / 477.1 MB, free: 3.914 MB / 426.7 MB Notification: Performance of NFFlatten.flatten: time 0.01838/0.03654, allocations: 20.74 MB / 497.8 MB, free: 15.29 MB / 458.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0003082/0.03684, allocations: 108.7 kB / 497.9 MB, free: 15.17 MB / 458.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.001744/0.03859, allocations: 1.193 MB / 499.1 MB, free: 13.97 MB / 458.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0008/0.03939, allocations: 0.7633 MB / 499.9 MB, free: 13.21 MB / 458.7 MB Notification: Performance of NFPackage.collectConstants: time 0.0004109/0.0398, allocations: 68 kB / 499.9 MB, free: 13.14 MB / 458.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0009045/0.0407, allocations: 0.5965 MB / 0.4888 GB, free: 12.54 MB / 458.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0006326/0.04134, allocations: 0.9662 MB / 0.4897 GB, free: 11.57 MB / 458.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0005448/0.04188, allocations: 0.6037 MB / 0.4903 GB, free: 10.97 MB / 458.7 MB Notification: Performance of NFConvertDAE.convert: time 0.001617/0.0435, allocations: 1.922 MB / 0.4922 GB, free: 9.039 MB / 458.7 MB Notification: Performance of FrontEnd - DAE generated: time 3.987e-06/0.0435, allocations: 0 / 0.4922 GB, free: 9.039 MB / 458.7 MB Notification: Performance of FrontEnd: time 1.172e-06/0.0435, allocations: 0 / 0.4922 GB, free: 9.039 MB / 458.7 MB Notification: Performance of Transformations before backend: time 3.314e-05/0.04354, allocations: 0 / 0.4922 GB, free: 9.039 MB / 458.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 75 * Number of variables: 75 Notification: Performance of Generate backend data structure: time 0.002212/0.04575, allocations: 2.526 MB / 0.4947 GB, free: 6.477 MB / 458.7 MB Notification: Performance of prepare preOptimizeDAE: time 3.584e-05/0.04578, allocations: 8.75 kB / 0.4947 GB, free: 6.469 MB / 458.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00208/0.04786, allocations: 0.6398 MB / 0.4953 GB, free: 5.828 MB / 458.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003024/0.05089, allocations: 3.116 MB / 0.4983 GB, free: 2.602 MB / 458.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.552e-05/0.05091, allocations: 32.64 kB / 0.4984 GB, free: 2.57 MB / 458.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 6.121e-05/0.05097, allocations: 43.94 kB / 0.4984 GB, free: 2.527 MB / 458.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.000584/0.05156, allocations: 440.3 kB / 0.4988 GB, free: 2.094 MB / 458.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.164e-05/0.05157, allocations: 5.938 kB / 0.4988 GB, free: 2.09 MB / 458.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.345e-05/0.0516, allocations: 8.844 kB / 0.4989 GB, free: 2.082 MB / 458.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.055e-06/0.05161, allocations: 8 kB / 0.4989 GB, free: 2.074 MB / 458.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0002477/0.05186, allocations: 176.5 kB / 0.499 GB, free: 1.902 MB / 458.7 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001441/0.0533, allocations: 0.8702 MB / 0.4999 GB, free: 1.012 MB / 458.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0005083/0.05381, allocations: 350.8 kB / 0.5002 GB, free: 0.6641 MB / 458.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 9.459e-05/0.0539, allocations: 72.78 kB / 0.5003 GB, free: 0.5898 MB / 458.7 MB Notification: Performance of preOpt evalFunc (simulation): time 3.193e-05/0.05393, allocations: 12 kB / 0.5003 GB, free: 0.5781 MB / 458.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.092e-05/0.05396, allocations: 42.55 kB / 0.5003 GB, free: 0.5273 MB / 458.7 MB Notification: Performance of pre-optimization done (n=31): time 1.513e-06/0.05396, allocations: 0 / 0.5003 GB, free: 0.5273 MB / 458.7 MB Notification: Performance of matching and sorting (n=31): time 0.0004805/0.05444, allocations: 341.4 kB / 0.5007 GB, free: 192 kB / 458.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 2.523e-05/0.05446, allocations: 55.41 kB / 0.5007 GB, free: 124 kB / 458.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00175/0.05621, allocations: 2.171 MB / 0.5028 GB, free: 13.93 MB / 474.7 MB Notification: Performance of collectPreVariables (initialization): time 4.235e-05/0.05626, allocations: 33.7 kB / 0.5029 GB, free: 13.89 MB / 474.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002766/0.05653, allocations: 491.3 kB / 0.5033 GB, free: 13.4 MB / 474.7 MB Notification: Performance of collectInitialBindings (initialization): time 6.487e-05/0.0566, allocations: 111 kB / 0.5034 GB, free: 13.29 MB / 474.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001511/0.05675, allocations: 150.1 kB / 0.5036 GB, free: 13.14 MB / 474.7 MB Notification: Performance of setup shared object (initialization): time 7.5e-05/0.05682, allocations: 329.9 kB / 0.5039 GB, free: 12.81 MB / 474.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001438/0.05697, allocations: 114.3 kB / 0.504 GB, free: 12.69 MB / 474.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002668/0.05723, allocations: 467.7 kB / 0.5045 GB, free: 12.09 MB / 474.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004161/0.05765, allocations: 498.8 kB / 0.5049 GB, free: 11.5 MB / 474.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.676e-06/0.05765, allocations: 0 / 0.5049 GB, free: 11.5 MB / 474.7 MB Notification: Performance of matching and sorting (n=73) (initialization): time 0.0005767/0.05823, allocations: 0.5331 MB / 0.5054 GB, free: 10.96 MB / 474.7 MB Notification: Performance of prepare postOptimizeDAE: time 1.419e-05/0.05824, allocations: 8 kB / 0.5055 GB, free: 10.95 MB / 474.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.819e-06/0.05825, allocations: 8 kB / 0.5055 GB, free: 10.95 MB / 474.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.791e-05/0.05827, allocations: 12 kB / 0.5055 GB, free: 10.93 MB / 474.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005129/0.05879, allocations: 220.9 kB / 0.5057 GB, free: 10.72 MB / 474.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.027e-05/0.0588, allocations: 12 kB / 0.5057 GB, free: 10.71 MB / 474.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004414/0.05924, allocations: 115.5 kB / 0.5058 GB, free: 10.59 MB / 474.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.043e-05/0.05931, allocations: 55.95 kB / 0.5059 GB, free: 10.54 MB / 474.7 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0002826/0.05959, allocations: 195 kB / 0.506 GB, free: 10.34 MB / 474.7 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.000255/0.05984, allocations: 458.7 kB / 0.5065 GB, free: 9.75 MB / 474.7 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0003721/0.06022, allocations: 481.9 kB / 0.5069 GB, free: 9.172 MB / 474.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.836e-06/0.06022, allocations: 4 kB / 0.5069 GB, free: 9.168 MB / 474.7 MB Notification: Performance of matching and sorting (n=73) (initialization_lambda0): time 0.0005358/0.06076, allocations: 0.5115 MB / 0.5074 GB, free: 8.648 MB / 474.7 MB Notification: Performance of prepare postOptimizeDAE: time 8.055e-06/0.06076, allocations: 11.94 kB / 0.5075 GB, free: 8.637 MB / 474.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.723e-06/0.06077, allocations: 10.34 kB / 0.5075 GB, free: 8.629 MB / 474.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 7.684e-06/0.06078, allocations: 12.53 kB / 0.5075 GB, free: 8.617 MB / 474.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004351/0.06121, allocations: 199.7 kB / 0.5077 GB, free: 8.422 MB / 474.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.178e-05/0.06122, allocations: 21.8 kB / 0.5077 GB, free: 8.402 MB / 474.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004398/0.06166, allocations: 103.7 kB / 0.5078 GB, free: 8.301 MB / 474.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.986e-05/0.06171, allocations: 51.97 kB / 0.5078 GB, free: 8.25 MB / 474.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 35 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (69): * Single equations (assignments): 65 * Array equations: 4 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0001223/0.06184, allocations: 224 kB / 0.5081 GB, free: 8.023 MB / 474.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001304/0.06197, allocations: 127.7 kB / 0.5082 GB, free: 7.898 MB / 474.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0005482/0.06252, allocations: 465.3 kB / 0.5086 GB, free: 7.441 MB / 474.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.426e-06/0.06252, allocations: 4 kB / 0.5086 GB, free: 7.438 MB / 474.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.482e-06/0.06252, allocations: 0 / 0.5086 GB, free: 7.438 MB / 474.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.416e-06/0.06252, allocations: 0 / 0.5086 GB, free: 7.438 MB / 474.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0008033/0.06333, allocations: 0.5885 MB / 0.5092 GB, free: 6.828 MB / 474.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.543e-06/0.06333, allocations: 0 / 0.5092 GB, free: 6.828 MB / 474.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002791/0.06361, allocations: 111.8 kB / 0.5093 GB, free: 6.719 MB / 474.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 4.117e-06/0.06361, allocations: 5.922 kB / 0.5093 GB, free: 6.715 MB / 474.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.226e-05/0.06363, allocations: 15.92 kB / 0.5093 GB, free: 6.699 MB / 474.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.884e-06/0.06364, allocations: 0 / 0.5093 GB, free: 6.699 MB / 474.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.322e-06/0.06364, allocations: 0.75 kB / 0.5093 GB, free: 6.699 MB / 474.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0003704/0.06401, allocations: 461 kB / 0.5098 GB, free: 6.23 MB / 474.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0002446/0.06425, allocations: 262.2 kB / 0.51 GB, free: 5.973 MB / 474.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001288/0.06438, allocations: 11.94 kB / 0.51 GB, free: 5.961 MB / 474.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003317/0.06471, allocations: 47.97 kB / 0.5101 GB, free: 5.914 MB / 474.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.46e-05/0.06476, allocations: 23.95 kB / 0.5101 GB, free: 5.891 MB / 474.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.771e-05/0.06478, allocations: 21.3 kB / 0.5101 GB, free: 5.871 MB / 474.7 MB Notification: Performance of sorting global known variables: time 0.0008594/0.06564, allocations: 1.148 MB / 0.5112 GB, free: 4.715 MB / 474.7 MB Notification: Performance of sort global known variables: time 1e-07/0.06564, allocations: 4 kB / 0.5112 GB, free: 4.711 MB / 474.7 MB Notification: Performance of remove unused functions: time 0.0008697/0.06651, allocations: 0.5502 MB / 0.5118 GB, free: 4.16 MB / 474.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * 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 (35): * Single equations (assignments): 35 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0003185/0.06683, allocations: 235.8 kB / 0.512 GB, free: 3.922 MB / 474.7 MB Notification: Performance of simCode: created initialization part: time 0.0006095/0.06744, allocations: 0.5332 MB / 0.5125 GB, free: 3.387 MB / 474.7 MB Notification: Performance of simCode: created event and clocks part: time 1.553e-05/0.06746, allocations: 31.56 kB / 0.5126 GB, free: 3.359 MB / 474.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0001373/0.06759, allocations: 115.7 kB / 0.5127 GB, free: 3.246 MB / 474.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002078/0.06967, allocations: 1.374 MB / 0.514 GB, free: 1.988 MB / 474.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006175/0.07585, allocations: 3.901 MB / 0.5178 GB, free: 14.03 MB / 490.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003812/0.07623, allocations: 0.5056 MB / 0.5183 GB, free: 13.49 MB / 490.7 MB Notification: Performance of simCode: alias equations: time 0.001565/0.07779, allocations: 0.6199 MB / 0.5189 GB, free: 12.96 MB / 490.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001925/0.07972, allocations: 1.019 MB / 0.5199 GB, free: 11.94 MB / 490.7 MB Notification: Performance of SimCode: time 2.304e-06/0.07972, allocations: 0 / 0.5199 GB, free: 11.94 MB / 490.7 MB Notification: Performance of Templates: time 0.05551/0.1352, allocations: 53.09 MB / 0.5718 GB, free: 8.32 MB / 0.5261 GB " [Timeout remaining time 660] make -j1 -f BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods.makefile [Timeout 660] (rm -f BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods.sim & ./BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods -abortSlowSimulation -alarm=240 -s gbode -gbm=radauIIA3 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.Movers.BaseClasses.Validation.TotalEfficiencyMethods.pipe 2>&1) [Timeout 240] [Calling sys.exit(0), Time elapsed: 4.616844669915736]