Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves.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 0.001398/0.001398, allocations: 84.22 kB / 20.95 MB, free: 3.605 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 0.0009851/0.0009851, allocations: 169 kB / 24.25 MB, free: 308 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 0.9682/0.9682, allocations: 177.1 MB / 204.6 MB, free: 5.637 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo): time 0.5855/0.5855, allocations: 115 MB / 376 MB, free: 7.68 MB / 346.7 MB " [Timeout remaining time 179] Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 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(IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves") translateModel(IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.413e-06/1.413e-06, allocations: 0 / 481.5 MB, free: 11.88 MB / 410.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 2.108e-05/2.249e-05, allocations: 8.375 kB / 481.5 MB, free: 11.87 MB / 410.7 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves): time 0.08616/0.08619, allocations: 110.1 MB / 0.5777 GB, free: 10.13 MB / 0.4948 GB Notification: Performance of NFInst.instExpressions: time 0.04302/0.1292, allocations: 36.31 MB / 0.6132 GB, free: 5.73 MB / 0.5261 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.005061/0.1343, allocations: 226.1 kB / 0.6134 GB, free: 5.508 MB / 0.5261 GB Notification: Performance of NFTyping.typeComponents: time 0.005835/0.1401, allocations: 2.971 MB / 0.6163 GB, free: 2.52 MB / 0.5261 GB Notification: Performance of NFTyping.typeBindings: time 0.01104/0.1511, allocations: 6.086 MB / 0.6222 GB, free: 12.4 MB / 0.5417 GB Notification: Performance of NFTyping.typeClassSections: time 0.007083/0.1582, allocations: 4.337 MB / 0.6265 GB, free: 8.062 MB / 0.5417 GB Notification: Performance of NFFlatten.flatten: time 0.3039/0.4622, allocations: 43.66 MB / 0.6691 GB, free: 37.87 MB / 0.5573 GB Notification: Performance of NFFlatten.resolveConnections: time 0.005795/0.468, allocations: 3.135 MB / 0.6722 GB, free: 37.7 MB / 0.5573 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01202/0.48, allocations: 6.128 MB / 0.6782 GB, free: 37.28 MB / 0.5573 GB Notification: Performance of NFSimplifyModel.simplify: time 0.005024/0.485, allocations: 3.052 MB / 0.6811 GB, free: 36.92 MB / 0.5573 GB Notification: Performance of NFPackage.collectConstants: time 0.0008561/0.4858, allocations: 400.3 kB / 0.6815 GB, free: 36.92 MB / 0.5573 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004083/0.4899, allocations: 2.27 MB / 0.6837 GB, free: 36.82 MB / 0.5573 GB Notification: Performance of NFScalarize.scalarize: time 0.001163/0.4911, allocations: 1.994 MB / 0.6857 GB, free: 36.52 MB / 0.5573 GB Notification: Performance of NFVerifyModel.verify: time 0.002291/0.4934, allocations: 1.877 MB / 0.6875 GB, free: 36.25 MB / 0.5573 GB Notification: Performance of NFConvertDAE.convert: time 0.006967/0.5004, allocations: 5.59 MB / 0.693 GB, free: 35.51 MB / 0.5573 GB Notification: Performance of FrontEnd - DAE generated: time 4.829e-06/0.5004, allocations: 0 / 0.693 GB, free: 35.51 MB / 0.5573 GB Notification: Performance of FrontEnd: time 1.433e-06/0.5004, allocations: 3.656 kB / 0.693 GB, free: 35.51 MB / 0.5573 GB Notification: Performance of Transformations before backend: time 0.000186/0.5005, allocations: 0 / 0.693 GB, free: 35.51 MB / 0.5573 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 545 * Number of variables: 545 Notification: Performance of Generate backend data structure: time 0.006708/0.5073, allocations: 6.68 MB / 0.6995 GB, free: 32.16 MB / 0.5573 GB Notification: Performance of prepare preOptimizeDAE: time 3.934e-05/0.5073, allocations: 13 kB / 0.6995 GB, free: 32.16 MB / 0.5573 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0044/0.5117, allocations: 1.793 MB / 0.7013 GB, free: 31.76 MB / 0.5573 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008202/0.5199, allocations: 7.615 MB / 0.7087 GB, free: 30.34 MB / 0.5573 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.491e-05/0.52, allocations: 184.4 kB / 0.7089 GB, free: 30.33 MB / 0.5573 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002675/0.5203, allocations: 244.5 kB / 0.7091 GB, free: 30.33 MB / 0.5573 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002805/0.5231, allocations: 2.214 MB / 0.7113 GB, free: 29.74 MB / 0.5573 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.557e-05/0.5231, allocations: 6.25 kB / 0.7113 GB, free: 29.74 MB / 0.5573 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001854/0.5233, allocations: 87.81 kB / 0.7114 GB, free: 29.74 MB / 0.5573 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.682e-05/0.5233, allocations: 57.56 kB / 0.7114 GB, free: 29.74 MB / 0.5573 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001725/0.525, allocations: 1.099 MB / 0.7125 GB, free: 29.68 MB / 0.5573 GB 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 0.009957/0.535, allocations: 11.09 MB / 0.7233 GB, free: 24.51 MB / 0.5573 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00168/0.5367, allocations: 1.067 MB / 0.7244 GB, free: 24.31 MB / 0.5573 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000571/0.5373, allocations: 417.8 kB / 0.7248 GB, free: 24.24 MB / 0.5573 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003641/0.5409, allocations: 2.565 MB / 0.7273 GB, free: 23.26 MB / 0.5573 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.13e-05/0.5409, allocations: 53.17 kB / 0.7273 GB, free: 23.22 MB / 0.5573 GB Notification: Performance of pre-optimization done (n=115): time 2.545e-06/0.5409, allocations: 0 / 0.7273 GB, free: 23.22 MB / 0.5573 GB Notification: Performance of matching and sorting (n=115): time 0.003965/0.5449, allocations: 2.188 MB / 0.7295 GB, free: 22.54 MB / 0.5573 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.595e-05/0.5449, allocations: 66.53 kB / 0.7295 GB, free: 22.47 MB / 0.5573 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003655/0.5486, allocations: 4.563 MB / 0.734 GB, free: 20.71 MB / 0.5573 GB Notification: Performance of collectPreVariables (initialization): time 0.0001293/0.5487, allocations: 60.95 kB / 0.734 GB, free: 20.66 MB / 0.5573 GB Notification: Performance of collectInitialEqns (initialization): time 0.001346/0.5501, allocations: 2.758 MB / 0.7367 GB, free: 18.32 MB / 0.5573 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002418/0.5503, allocations: 416.3 kB / 0.7371 GB, free: 17.97 MB / 0.5573 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004684/0.5508, allocations: 0.4884 MB / 0.7376 GB, free: 17.7 MB / 0.5573 GB Notification: Performance of setup shared object (initialization): time 3.834e-05/0.5508, allocations: 476.8 kB / 0.7381 GB, free: 17.23 MB / 0.5573 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006949/0.5515, allocations: 479.8 kB / 0.7385 GB, free: 17.09 MB / 0.5573 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00111/0.5526, allocations: 1.898 MB / 0.7404 GB, free: 15.11 MB / 0.5573 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001687/0.5543, allocations: 1.773 MB / 0.7421 GB, free: 13.82 MB / 0.5573 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.704e-06/0.5543, allocations: 3.562 kB / 0.7421 GB, free: 13.82 MB / 0.5573 GB Notification: Performance of matching and sorting (n=239) (initialization): time 0.002933/0.5572, allocations: 2.341 MB / 0.7444 GB, free: 12.66 MB / 0.5573 GB Notification: Performance of prepare postOptimizeDAE: time 2.394e-05/0.5573, allocations: 13.25 kB / 0.7444 GB, free: 12.64 MB / 0.5573 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.623e-05/0.5573, allocations: 16 kB / 0.7444 GB, free: 12.63 MB / 0.5573 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0007977/0.5581, allocations: 328.1 kB / 0.7447 GB, free: 12.3 MB / 0.5573 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009566/0.559, allocations: 469.1 kB / 0.7452 GB, free: 11.86 MB / 0.5573 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0009909/0.56, allocations: 3.538 MB / 0.7486 GB, free: 8.215 MB / 0.5573 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001481/0.5615, allocations: 255.1 kB / 0.7489 GB, free: 7.965 MB / 0.5573 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001916/0.5617, allocations: 231.9 kB / 0.7491 GB, free: 7.738 MB / 0.5573 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001101/0.5628, allocations: 0.5604 MB / 0.7496 GB, free: 7.18 MB / 0.5573 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0008598/0.5637, allocations: 1.842 MB / 0.7514 GB, free: 4.816 MB / 0.5573 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001387/0.565, allocations: 1.663 MB / 0.7531 GB, free: 2.898 MB / 0.5573 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.783e-06/0.565, allocations: 4 kB / 0.7531 GB, free: 2.895 MB / 0.5573 GB Notification: Performance of matching and sorting (n=239) (initialization_lambda0): time 0.002897/0.5679, allocations: 2.31 MB / 0.7553 GB, free: 0.7031 MB / 0.5573 GB Notification: Performance of prepare postOptimizeDAE: time 1.587e-05/0.568, allocations: 12 kB / 0.7553 GB, free: 0.6914 MB / 0.5573 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.211e-05/0.568, allocations: 16 kB / 0.7554 GB, free: 0.6758 MB / 0.5573 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001436/0.5694, allocations: 0.6009 MB / 0.7559 GB, free: 60 kB / 0.5573 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009037/0.5703, allocations: 433.3 kB / 0.7564 GB, free: 15.66 MB / 0.573 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007552/0.5779, allocations: 10.28 MB / 0.7664 GB, free: 4.875 MB / 0.573 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001823/0.5797, allocations: 238.4 kB / 0.7666 GB, free: 4.645 MB / 0.573 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001927/0.5799, allocations: 167.9 kB / 0.7668 GB, free: 4.48 MB / 0.573 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 81 * 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 (203): * Single equations (assignments): 195 * Array equations: 4 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * 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): 4 systems {(1,4), (1,4), (1,4), (1,4)} Notification: Performance of prepare postOptimizeDAE: time 0.0005861/0.5805, allocations: 382.2 kB / 0.7671 GB, free: 4.125 MB / 0.573 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005378/0.581, allocations: 0.5395 MB / 0.7677 GB, free: 3.582 MB / 0.573 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003346/0.5843, allocations: 2.277 MB / 0.7699 GB, free: 1.363 MB / 0.573 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.665e-05/0.5844, allocations: 19.98 kB / 0.7699 GB, free: 1.344 MB / 0.573 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.094e-06/0.5844, allocations: 4 kB / 0.7699 GB, free: 1.34 MB / 0.573 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.104e-05/0.5844, allocations: 7.922 kB / 0.7699 GB, free: 1.332 MB / 0.573 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005584/0.59, allocations: 4.658 MB / 0.7745 GB, free: 12.66 MB / 0.5886 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.28e-06/0.59, allocations: 0 / 0.7745 GB, free: 12.66 MB / 0.5886 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007014/0.5907, allocations: 278.1 kB / 0.7747 GB, free: 12.39 MB / 0.5886 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000652/0.5913, allocations: 353.6 kB / 0.7751 GB, free: 12.04 MB / 0.5886 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 8.777e-05/0.5914, allocations: 59.94 kB / 0.7751 GB, free: 11.98 MB / 0.5886 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001186/0.5926, allocations: 3.429 MB / 0.7785 GB, free: 8.426 MB / 0.5886 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.403e-06/0.5926, allocations: 0 / 0.7785 GB, free: 8.426 MB / 0.5886 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002454/0.595, allocations: 2.068 MB / 0.7805 GB, free: 6.348 MB / 0.5886 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007775/0.5958, allocations: 0.6971 MB / 0.7812 GB, free: 5.648 MB / 0.5886 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000306/0.5961, allocations: 24 kB / 0.7812 GB, free: 5.625 MB / 0.5886 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008489/0.597, allocations: 87.94 kB / 0.7813 GB, free: 5.539 MB / 0.5886 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001358/0.5971, allocations: 107.9 kB / 0.7814 GB, free: 5.438 MB / 0.5886 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001234/0.5972, allocations: 119.9 kB / 0.7815 GB, free: 5.32 MB / 0.5886 GB Notification: Performance of sorting global known variables: time 0.00247/0.5997, allocations: 2.464 MB / 0.7839 GB, free: 2.859 MB / 0.5886 GB Notification: Performance of sort global known variables: time 9e-08/0.5997, allocations: 0 / 0.7839 GB, free: 2.859 MB / 0.5886 GB Notification: Performance of remove unused functions: time 0.003697/0.6034, allocations: 2 MB / 0.7859 GB, free: 0.8555 MB / 0.5886 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * 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 (121): * Single equations (assignments): 107 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 10 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * 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): 4 systems {(1,5), (1,5), (1,5), (1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001205/0.6046, allocations: 0.6766 MB / 0.7865 GB, free: 236 kB / 0.5886 GB Notification: Performance of simCode: created initialization part: time 0.003963/0.6086, allocations: 3.017 MB / 0.7895 GB, free: 13.29 MB / 0.6042 GB Notification: Performance of simCode: created event and clocks part: time 3.286e-06/0.6086, allocations: 0 / 0.7895 GB, free: 13.29 MB / 0.6042 GB Notification: Performance of simCode: created simulation system equations: time 0.0008315/0.6094, allocations: 0.6464 MB / 0.7901 GB, free: 12.67 MB / 0.6042 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005624/0.615, allocations: 2.98 MB / 0.793 GB, free: 9.828 MB / 0.6042 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009046/0.6241, allocations: 7.462 MB / 0.8003 GB, free: 2.312 MB / 0.6042 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009514/0.625, allocations: 1.028 MB / 0.8013 GB, free: 1.262 MB / 0.6042 GB Notification: Performance of simCode: alias equations: time 0.003269/0.6283, allocations: 1.282 MB / 0.8025 GB, free: 0 / 0.6042 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007895/0.6291, allocations: 456.3 kB / 0.803 GB, free: 15.55 MB / 0.6198 GB Notification: Performance of SimCode: time 1.753e-06/0.6291, allocations: 3.938 kB / 0.803 GB, free: 15.55 MB / 0.6198 GB Notification: Performance of Templates: time 0.2981/0.9272, allocations: 109.9 MB / 0.9103 GB, free: 290.9 MB / 0.698 GB " [Timeout remaining time 659] make -j1 -f IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves.makefile [Timeout 660] (rm -f IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves.sim & ./IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves -abortSlowSimulation -alarm=240 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves.pipe 2>&1) [Timeout 240] [Calling sys.exit(0), Time elapsed: 6.269771562889218]