Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water.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 0.001403/0.001403, allocations: 90.58 kB / 20.23 MB, free: 4.176 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 0.00155/0.00155, allocations: 169.2 kB / 23.55 MB, free: 0.8555 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 1.494/1.494, allocations: 177.1 MB / 203.9 MB, free: 5.598 MB / 186.7 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.2-maint.12.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.2-maint.12.x/package.mo): time 2.884/2.884, allocations: 377.8 MB / 0.6232 GB, free: 8.52 MB / 0.5886 GB " [Timeout remaining time 176] Using package Buildings with version 12.1.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.2-maint.12.x/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(Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|heaHigPow.mWat_flow|cooLimPow.mWat_flow|heaCooUnl.mWat_flow|steSta.mWat_flow|THeaHigPowIn.T|THeaHigPowOut.T|TCooLimPowIn.T|TCooLimPowOut.T|THeaCooUnlIn.T|THeaCooUnlOut.T|TSteStaIn.T|TSteStaOut.T|heaHigPow.Q_flow|cooLimPow.Q_flow|heaCooUnl.Q_flow|steSta.Q_flow",fileNamePrefix="Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water") translateModel(Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|heaHigPow.mWat_flow|cooLimPow.mWat_flow|heaCooUnl.mWat_flow|steSta.mWat_flow|THeaHigPowIn.T|THeaHigPowOut.T|TCooLimPowIn.T|TCooLimPowOut.T|THeaCooUnlIn.T|THeaCooUnlOut.T|TSteStaIn.T|TSteStaOut.T|heaHigPow.Q_flow|cooLimPow.Q_flow|heaCooUnl.Q_flow|steSta.Q_flow",fileNamePrefix="Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water") [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 1.894e-06/1.894e-06, allocations: 0 / 0.8108 GB, free: 2.055 MB / 0.7605 GB Notification: Performance of FrontEnd - Absyn->SCode: time 3.315e-05/3.505e-05, allocations: 3.375 kB / 0.8109 GB, free: 2.051 MB / 0.7605 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water): time 0.06888/0.06892, allocations: 50 MB / 0.8597 GB, free: 15.96 MB / 0.823 GB Notification: Performance of NFInst.instExpressions: time 0.01809/0.08701, allocations: 9.752 MB / 0.8692 GB, free: 6.188 MB / 0.823 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002467/0.08948, allocations: 95.12 kB / 0.8693 GB, free: 6.094 MB / 0.823 GB Notification: Performance of NFTyping.typeComponents: time 0.002681/0.09216, allocations: 0.9238 MB / 0.8702 GB, free: 5.164 MB / 0.823 GB Notification: Performance of NFTyping.typeBindings: time 0.006692/0.09885, allocations: 2.125 MB / 0.8723 GB, free: 3.027 MB / 0.823 GB Notification: Performance of NFTyping.typeClassSections: time 0.006305/0.1052, allocations: 2.134 MB / 0.8744 GB, free: 0.8867 MB / 0.823 GB Notification: Performance of NFFlatten.flatten: time 0.006746/0.1119, allocations: 3.846 MB / 0.8781 GB, free: 13.02 MB / 0.8386 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002377/0.1143, allocations: 1.022 MB / 0.8791 GB, free: 11.98 MB / 0.8386 GB Notification: Performance of NFEvalConstants.evaluate: time 0.006772/0.1211, allocations: 2.457 MB / 0.8815 GB, free: 9.516 MB / 0.8386 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002512/0.1236, allocations: 1.067 MB / 0.8826 GB, free: 8.445 MB / 0.8386 GB Notification: Performance of NFPackage.collectConstants: time 0.000423/0.124, allocations: 108 kB / 0.8827 GB, free: 8.34 MB / 0.8386 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003193/0.1272, allocations: 1.048 MB / 0.8837 GB, free: 7.289 MB / 0.8386 GB Notification: Performance of NFScalarize.scalarize: time 0.0005601/0.1277, allocations: 414.1 kB / 0.8841 GB, free: 6.883 MB / 0.8386 GB Notification: Performance of NFVerifyModel.verify: time 0.001087/0.1288, allocations: 0.5727 MB / 0.8846 GB, free: 6.309 MB / 0.8386 GB Notification: Performance of NFConvertDAE.convert: time 0.004135/0.133, allocations: 2.441 MB / 0.887 GB, free: 3.859 MB / 0.8386 GB Notification: Performance of FrontEnd - DAE generated: time 4.248e-06/0.133, allocations: 0 / 0.887 GB, free: 3.859 MB / 0.8386 GB Notification: Performance of FrontEnd: time 1.372e-06/0.133, allocations: 0 / 0.887 GB, free: 3.859 MB / 0.8386 GB Notification: Performance of Transformations before backend: time 2.03e-05/0.133, allocations: 0 / 0.887 GB, free: 3.859 MB / 0.8386 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 272 * Number of variables: 272 Notification: Performance of Generate backend data structure: time 0.003975/0.137, allocations: 2.11 MB / 0.8891 GB, free: 1.699 MB / 0.8386 GB Notification: Performance of prepare preOptimizeDAE: time 4.37e-05/0.137, allocations: 8.031 kB / 0.8891 GB, free: 1.691 MB / 0.8386 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004334/0.1413, allocations: 0.7441 MB / 0.8898 GB, free: 0.9453 MB / 0.8386 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002434/0.1438, allocations: 1.154 MB / 0.8909 GB, free: 15.74 MB / 0.8542 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001175/0.1439, allocations: 82.14 kB / 0.891 GB, free: 15.66 MB / 0.8542 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003244/0.1442, allocations: 111.9 kB / 0.8911 GB, free: 15.55 MB / 0.8542 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004015/0.1482, allocations: 1.504 MB / 0.8926 GB, free: 13.89 MB / 0.8542 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.89e-05/0.1483, allocations: 11.94 kB / 0.8926 GB, free: 13.88 MB / 0.8542 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001275/0.1484, allocations: 47.98 kB / 0.8926 GB, free: 13.83 MB / 0.8542 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.103e-05/0.1484, allocations: 31.94 kB / 0.8927 GB, free: 13.8 MB / 0.8542 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004158/0.1526, allocations: 1.237 MB / 0.8939 GB, free: 12.56 MB / 0.8542 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0107/0.1633, allocations: 6.43 MB / 0.9002 GB, free: 5.914 MB / 0.8542 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003886/0.1672, allocations: 1.07 MB / 0.9012 GB, free: 4.844 MB / 0.8542 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001956/0.1691, allocations: 0.5336 MB / 0.9017 GB, free: 4.309 MB / 0.8542 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001094/0.1702, allocations: 290.2 kB / 0.902 GB, free: 4.023 MB / 0.8542 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.002069/0.1723, allocations: 0.6801 MB / 0.9027 GB, free: 3.336 MB / 0.8542 GB Notification: Performance of pre-optimization done (n=85): time 3.046e-06/0.1723, allocations: 0 / 0.9027 GB, free: 3.336 MB / 0.8542 GB Notification: Performance of matching and sorting (n=85): time 0.006375/0.1787, allocations: 1.834 MB / 0.9045 GB, free: 1.492 MB / 0.8542 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.294e-05/0.1787, allocations: 60.41 kB / 0.9045 GB, free: 1.422 MB / 0.8542 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002389/0.1811, allocations: 1.404 MB / 0.9059 GB, free: 0 / 0.8542 GB Notification: Performance of collectPreVariables (initialization): time 0.0001191/0.1812, allocations: 41.7 kB / 0.9059 GB, free: 15.95 MB / 0.8698 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008875/0.1821, allocations: 0.8146 MB / 0.9067 GB, free: 15.13 MB / 0.8698 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003771/0.1825, allocations: 309.4 kB / 0.907 GB, free: 14.82 MB / 0.8698 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004089/0.1829, allocations: 218.8 kB / 0.9072 GB, free: 14.61 MB / 0.8698 GB Notification: Performance of setup shared object (initialization): time 0.0002286/0.1831, allocations: 353.9 kB / 0.9076 GB, free: 14.25 MB / 0.8698 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001789/0.1849, allocations: 0.5295 MB / 0.9081 GB, free: 13.72 MB / 0.8698 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00239/0.1873, allocations: 1.133 MB / 0.9092 GB, free: 12.38 MB / 0.8698 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004207/0.1915, allocations: 1.422 MB / 0.9106 GB, free: 10.8 MB / 0.8698 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.306e-05/0.1915, allocations: 4 kB / 0.9106 GB, free: 10.8 MB / 0.8698 GB Notification: Performance of matching and sorting (n=140) (initialization): time 0.004944/0.1965, allocations: 1.667 MB / 0.9122 GB, free: 9.121 MB / 0.8698 GB Notification: Performance of prepare postOptimizeDAE: time 3.001e-05/0.1965, allocations: 12 kB / 0.9122 GB, free: 9.109 MB / 0.8698 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.269e-05/0.1965, allocations: 12 kB / 0.9122 GB, free: 9.098 MB / 0.8698 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.194e-05/0.1966, allocations: 16.75 kB / 0.9123 GB, free: 9.082 MB / 0.8698 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001583/0.1982, allocations: 351.4 kB / 0.9126 GB, free: 8.738 MB / 0.8698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.747e-05/0.1982, allocations: 23.92 kB / 0.9126 GB, free: 8.715 MB / 0.8698 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001555/0.1997, allocations: 211 kB / 0.9128 GB, free: 8.508 MB / 0.8698 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001679/0.1999, allocations: 67.95 kB / 0.9129 GB, free: 8.441 MB / 0.8698 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 50 * Number of states: 0 () * Number of discrete variables: 15 ($PRE.setHeaHigPow.nextTimeEvent,$whenCondition3,$PRE.setCooLimPow.nextTimeEvent,$whenCondition2,$PRE.setHeaCooUnl.nextTimeEvent,$whenCondition1,setHeaCooUnl.nextTimeEventScaled,$PRE.setHeaCooUnl.nextTimeEventScaled,setHeaCooUnl.nextTimeEvent,setCooLimPow.nextTimeEventScaled,$PRE.setCooLimPow.nextTimeEventScaled,setCooLimPow.nextTimeEvent,setHeaHigPow.nextTimeEventScaled,$PRE.setHeaHigPow.nextTimeEventScaled,setHeaHigPow.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (140): * Single equations (assignments): 140 * 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 prepare postOptimizeDAE: time 0.0006731/0.2006, allocations: 347.3 kB / 0.9132 GB, free: 8.094 MB / 0.8698 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004619/0.201, allocations: 183 kB / 0.9134 GB, free: 7.914 MB / 0.8698 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005851/0.2069, allocations: 2.181 MB / 0.9155 GB, free: 5.719 MB / 0.8698 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.058e-05/0.2069, allocations: 19.98 kB / 0.9155 GB, free: 5.699 MB / 0.8698 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.975e-06/0.2069, allocations: 3.938 kB / 0.9155 GB, free: 5.695 MB / 0.8698 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.635e-05/0.207, allocations: 7.969 kB / 0.9155 GB, free: 5.688 MB / 0.8698 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00796/0.2149, allocations: 3.118 MB / 0.9186 GB, free: 2.508 MB / 0.8698 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.205e-05/0.2149, allocations: 4 kB / 0.9186 GB, free: 2.504 MB / 0.8698 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001274/0.2162, allocations: 235.8 kB / 0.9188 GB, free: 2.273 MB / 0.8698 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.058e-05/0.2162, allocations: 8 kB / 0.9188 GB, free: 2.266 MB / 0.8698 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001004/0.2163, allocations: 31.97 kB / 0.9189 GB, free: 2.234 MB / 0.8698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 9.197e-06/0.2163, allocations: 4 kB / 0.9189 GB, free: 2.23 MB / 0.8698 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.337e-06/0.2164, allocations: 15.92 kB / 0.9189 GB, free: 2.215 MB / 0.8698 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.007424/0.2238, allocations: 2.837 MB / 0.9216 GB, free: 15.34 MB / 0.8855 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007252/0.2245, allocations: 318.3 kB / 0.9219 GB, free: 15.03 MB / 0.8855 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000241/0.2247, allocations: 24 kB / 0.922 GB, free: 15 MB / 0.8855 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001253/0.226, allocations: 123.8 kB / 0.9221 GB, free: 14.88 MB / 0.8855 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001799/0.2262, allocations: 84.78 kB / 0.9222 GB, free: 14.8 MB / 0.8855 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001257/0.2263, allocations: 51.95 kB / 0.9222 GB, free: 14.75 MB / 0.8855 GB Notification: Performance of sorting global known variables: time 0.001621/0.2279, allocations: 0.9365 MB / 0.9231 GB, free: 13.82 MB / 0.8855 GB Notification: Performance of sort global known variables: time 9e-08/0.2279, allocations: 3.938 kB / 0.9231 GB, free: 13.81 MB / 0.8855 GB Notification: Performance of remove unused functions: time 0.001854/0.2298, allocations: 0.5651 MB / 0.9237 GB, free: 13.25 MB / 0.8855 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 7 * Number of states: 3 (heaHigPow.T,cooLimPow.T,heaCooUnl.T) * Number of discrete variables: 9 ($whenCondition3,$whenCondition2,$whenCondition1,setHeaHigPow.nextTimeEvent,setHeaHigPow.nextTimeEventScaled,setCooLimPow.nextTimeEvent,setCooLimPow.nextTimeEventScaled,setHeaCooUnl.nextTimeEvent,setHeaCooUnl.nextTimeEventScaled) * Number of discrete states: 6 (setHeaHigPow.nextTimeEvent,setCooLimPow.nextTimeEvent,setHeaCooUnl.nextTimeEvent,setHeaCooUnl.nextTimeEventScaled,setCooLimPow.nextTimeEventScaled,setHeaHigPow.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (116): * Single equations (assignments): 85 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 25 * When equations: 6 * 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 0.003437/0.2332, allocations: 0.8678 MB / 0.9245 GB, free: 12.56 MB / 0.8855 GB Notification: Performance of simCode: created initialization part: time 0.004457/0.2377, allocations: 1.457 MB / 0.926 GB, free: 11.1 MB / 0.8855 GB Notification: Performance of simCode: created event and clocks part: time 3.026e-06/0.2377, allocations: 192 / 0.926 GB, free: 11.1 MB / 0.8855 GB Notification: Performance of simCode: created simulation system equations: time 0.002252/0.2399, allocations: 0.7791 MB / 0.9267 GB, free: 10.33 MB / 0.8855 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002948/0.2429, allocations: 0.6443 MB / 0.9273 GB, free: 9.699 MB / 0.8855 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007651/0.2505, allocations: 3.189 MB / 0.9305 GB, free: 6.441 MB / 0.8855 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00143/0.252, allocations: 0.7306 MB / 0.9312 GB, free: 5.676 MB / 0.8855 GB Notification: Performance of simCode: alias equations: time 0.001753/0.2537, allocations: 351.4 kB / 0.9315 GB, free: 5.328 MB / 0.8855 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000851/0.2546, allocations: 156.4 kB / 0.9317 GB, free: 5.176 MB / 0.8855 GB Notification: Performance of SimCode: time 2.365e-06/0.2546, allocations: 0 / 0.9317 GB, free: 5.176 MB / 0.8855 GB Notification: Performance of Templates: time 0.05904/0.3136, allocations: 30.57 MB / 0.9615 GB, free: 7.285 MB / 0.9167 GB " [Timeout remaining time 300] make -j1 -f Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water.makefile [Timeout 300] (rm -f Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water.pipe ; mkfifo Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water.pipe ; head -c 1048576 < Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water.pipe >> ../files/Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water.sim & ./Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water -abortSlowSimulation -alarm=400 -emit_protected -lv LOG_STATS > Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water.pipe 2>&1) [Timeout 400] diffSimulationResults("Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_Fluid_Interfaces_Examples_PrescribedOutlet_Water.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_12_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_Water.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "" [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 9.201827590935864]