Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous.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 0.001503/0.001503, allocations: 117.8 kB / 17.13 MB, free: 6.004 MB / 14.72 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 0.001615/0.001615, allocations: 217.8 kB / 20.1 MB, free: 3.051 MB / 14.72 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 1.449/1.449, allocations: 230.6 MB / 253.5 MB, free: 15.09 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo): time 2.827/2.827, allocations: 0.49 GB / 0.7923 GB, free: 1.297 MB / 0.6231 GB " [Timeout remaining time 176] Using package Buildings with version 12.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-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.Movers.Examples.MoverContinuous,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|pump_dp.m_flow|pump_m_flow.m_flow|pump_y.m_flow",fileNamePrefix="Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous") translateModel(Buildings.Fluid.Movers.Examples.MoverContinuous,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|pump_dp.m_flow|pump_m_flow.m_flow|pump_y.m_flow",fileNamePrefix="Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous") [Timeout 300] "Notification: Buildings requested package Modelica of version 4.0.0. Modelica 4.1.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.00199/0.00199, allocations: 75.88 kB / 1.15 GB, free: 14.86 MB / 0.9356 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.9791/0.9811, allocations: 176.1 MB / 1.322 GB, free: 25.06 MB / 1.061 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Examples.MoverContinuous): time 0.08124/1.062, allocations: 76.55 MB / 1.397 GB, free: 2.289 MB / 1.092 GB Notification: Performance of NFInst.instExpressions: time 0.04602/1.108, allocations: 26.23 MB / 1.422 GB, free: 15.64 MB / 1.123 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.006573/1.115, allocations: 167.2 kB / 1.422 GB, free: 15.56 MB / 1.123 GB Notification: Performance of NFTyping.typeComponents: time 0.00907/1.124, allocations: 2.663 MB / 1.425 GB, free: 14.31 MB / 1.123 GB Notification: Performance of NFTyping.typeBindings: time 0.01399/1.138, allocations: 4.098 MB / 1.429 GB, free: 11.93 MB / 1.123 GB Notification: Performance of NFTyping.typeClassSections: time 0.009664/1.148, allocations: 3.301 MB / 1.432 GB, free: 10.3 MB / 1.123 GB Notification: Performance of NFFlatten.flatten: time 0.03105/1.179, allocations: 18.01 MB / 1.45 GB, free: 1.348 MB / 1.123 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004842/1.184, allocations: 2.227 MB / 1.452 GB, free: 15.71 MB / 1.139 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00847/1.192, allocations: 3.297 MB / 1.455 GB, free: 13.74 MB / 1.139 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004932/1.197, allocations: 2.465 MB / 1.458 GB, free: 12.14 MB / 1.139 GB Notification: Performance of NFPackage.collectConstants: time 0.001143/1.198, allocations: 343.7 kB / 1.458 GB, free: 12.14 MB / 1.139 GB Notification: Performance of NFFlatten.collectFunctions: time 0.007218/1.205, allocations: 2.603 MB / 1.461 GB, free: 10.8 MB / 1.139 GB Notification: Performance of NFScalarize.scalarize: time 0.002459/1.208, allocations: 1.691 MB / 1.462 GB, free: 9.676 MB / 1.139 GB Notification: Performance of NFVerifyModel.verify: time 0.004445/1.212, allocations: 2.463 MB / 1.465 GB, free: 7.375 MB / 1.139 GB Notification: Performance of NFConvertDAE.convert: time 0.01345/1.226, allocations: 7.531 MB / 1.472 GB, free: 15.82 MB / 1.154 GB Notification: Performance of FrontEnd - DAE generated: time 9.548e-06/1.226, allocations: 7.984 kB / 1.472 GB, free: 15.81 MB / 1.154 GB Notification: Performance of FrontEnd: time 2.204e-06/1.226, allocations: 7.938 kB / 1.472 GB, free: 15.8 MB / 1.154 GB Notification: Performance of Transformations before backend: time 0.0001757/1.226, allocations: 0 / 1.472 GB, free: 15.8 MB / 1.154 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 379 * Number of variables: 379 Notification: Performance of Generate backend data structure: time 0.01063/1.236, allocations: 5.455 MB / 1.477 GB, free: 10.24 MB / 1.154 GB Notification: Performance of prepare preOptimizeDAE: time 3.696e-05/1.237, allocations: 12.03 kB / 1.477 GB, free: 10.23 MB / 1.154 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.008919/1.245, allocations: 1.53 MB / 1.479 GB, free: 8.695 MB / 1.154 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01418/1.26, allocations: 7.208 MB / 1.486 GB, free: 1.422 MB / 1.154 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001576/1.26, allocations: 131 kB / 1.486 GB, free: 1.293 MB / 1.154 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004268/1.26, allocations: 180 kB / 1.486 GB, free: 1.117 MB / 1.154 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005417/1.266, allocations: 2.53 MB / 1.489 GB, free: 14.5 MB / 1.17 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.738e-05/1.266, allocations: 0 / 1.489 GB, free: 14.5 MB / 1.17 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001934/1.266, allocations: 68 kB / 1.489 GB, free: 14.44 MB / 1.17 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.286e-05/1.266, allocations: 36 kB / 1.489 GB, free: 14.4 MB / 1.17 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.005725/1.272, allocations: 2.009 MB / 1.491 GB, free: 12.39 MB / 1.17 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 0.01876/1.29, allocations: 11.16 MB / 1.502 GB, free: 0.6523 MB / 1.17 GB Notification: Performance of preOpt comSubExp (simulation): time 0.006447/1.297, allocations: 1.695 MB / 1.503 GB, free: 14.95 MB / 1.186 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002346/1.299, allocations: 0.7405 MB / 1.504 GB, free: 14.2 MB / 1.186 GB Notification: Performance of preOpt evalFunc (simulation): time 0.00761/1.307, allocations: 3.99 MB / 1.508 GB, free: 9.945 MB / 1.186 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.406e-05/1.307, allocations: 47.12 kB / 1.508 GB, free: 9.891 MB / 1.186 GB Notification: Performance of pre-optimization done (n=68): time 2.735e-06/1.307, allocations: 0 / 1.508 GB, free: 9.891 MB / 1.186 GB Notification: Performance of matching and sorting (n=68): time 0.008736/1.316, allocations: 2.581 MB / 1.51 GB, free: 7.305 MB / 1.186 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.169e-05/1.316, allocations: 55.97 kB / 1.51 GB, free: 7.238 MB / 1.186 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.009798/1.325, allocations: 5.44 MB / 1.516 GB, free: 1.816 MB / 1.186 GB Notification: Performance of collectPreVariables (initialization): time 0.0004214/1.326, allocations: 49.7 kB / 1.516 GB, free: 1.762 MB / 1.186 GB Notification: Performance of collectInitialEqns (initialization): time 0.002095/1.328, allocations: 1.93 MB / 1.518 GB, free: 15.82 MB / 1.201 GB Notification: Performance of collectInitialBindings (initialization): time 0.0005019/1.328, allocations: 273.8 kB / 1.518 GB, free: 15.55 MB / 1.201 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001184/1.33, allocations: 0.6774 MB / 1.519 GB, free: 14.86 MB / 1.201 GB Notification: Performance of setup shared object (initialization): time 0.0001397/1.33, allocations: 305.1 kB / 1.519 GB, free: 14.56 MB / 1.201 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004053/1.334, allocations: 2.042 MB / 1.521 GB, free: 12.51 MB / 1.201 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004975/1.339, allocations: 2.889 MB / 1.524 GB, free: 9.285 MB / 1.201 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.008678/1.347, allocations: 4.557 MB / 1.528 GB, free: 4.438 MB / 1.201 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.825e-05/1.347, allocations: 11.98 kB / 1.528 GB, free: 4.426 MB / 1.201 GB Notification: Performance of matching and sorting (n=383) (initialization): time 0.01152/1.359, allocations: 5.333 MB / 1.533 GB, free: 15.09 MB / 1.217 GB Notification: Performance of prepare postOptimizeDAE: time 3.119e-05/1.359, allocations: 12 kB / 1.533 GB, free: 15.07 MB / 1.217 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.687e-05/1.359, allocations: 24 kB / 1.533 GB, free: 15.05 MB / 1.217 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.664e-05/1.359, allocations: 32 kB / 1.534 GB, free: 15.02 MB / 1.217 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003689/1.363, allocations: 0.6322 MB / 1.534 GB, free: 14.39 MB / 1.217 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002571/1.365, allocations: 2.387 MB / 1.536 GB, free: 11.93 MB / 1.217 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003765/1.369, allocations: 413.6 kB / 1.537 GB, free: 11.52 MB / 1.217 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003617/1.37, allocations: 144 kB / 1.537 GB, free: 11.38 MB / 1.217 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.005412/1.375, allocations: 2.82 MB / 1.54 GB, free: 8.555 MB / 1.217 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.004637/1.38, allocations: 2.658 MB / 1.542 GB, free: 5.562 MB / 1.217 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.007391/1.387, allocations: 4.109 MB / 1.546 GB, free: 1.168 MB / 1.217 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.649e-05/1.387, allocations: 8 kB / 1.546 GB, free: 1.16 MB / 1.217 GB Notification: Performance of matching and sorting (n=383) (initialization_lambda0): time 0.009878/1.397, allocations: 4.881 MB / 1.551 GB, free: 12.26 MB / 1.232 GB Notification: Performance of prepare postOptimizeDAE: time 2.471e-05/1.397, allocations: 14.03 kB / 1.551 GB, free: 12.25 MB / 1.232 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.952e-05/1.397, allocations: 20 kB / 1.551 GB, free: 12.23 MB / 1.232 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.28e-05/1.397, allocations: 32 kB / 1.551 GB, free: 12.2 MB / 1.232 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003058/1.4, allocations: 0.6363 MB / 1.552 GB, free: 11.56 MB / 1.232 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.862e-05/1.4, allocations: 47.8 kB / 1.552 GB, free: 11.52 MB / 1.232 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003655/1.404, allocations: 326.9 kB / 1.552 GB, free: 11.2 MB / 1.232 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000349/1.404, allocations: 147.9 kB / 1.552 GB, free: 11.05 MB / 1.232 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 93 * 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 (266): * Single equations (assignments): 257 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 3 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 3 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 3 systems {1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0006319/1.405, allocations: 319.4 kB / 1.553 GB, free: 10.73 MB / 1.232 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001105/1.406, allocations: 437 kB / 1.553 GB, free: 10.3 MB / 1.232 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006957/1.413, allocations: 2.348 MB / 1.555 GB, free: 7.934 MB / 1.232 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.304e-05/1.413, allocations: 19.92 kB / 1.555 GB, free: 7.914 MB / 1.232 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.48e-06/1.413, allocations: 0 / 1.555 GB, free: 7.914 MB / 1.232 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.159e-05/1.413, allocations: 3.984 kB / 1.555 GB, free: 7.91 MB / 1.232 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01128/1.424, allocations: 4.902 MB / 1.56 GB, free: 2.938 MB / 1.232 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.55e-06/1.424, allocations: 0 / 1.56 GB, free: 2.938 MB / 1.232 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001734/1.426, allocations: 283.7 kB / 1.56 GB, free: 2.66 MB / 1.232 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000272/1.426, allocations: 100.8 kB / 1.56 GB, free: 2.559 MB / 1.232 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.753e-05/1.426, allocations: 39.95 kB / 1.561 GB, free: 2.52 MB / 1.232 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001755/1.428, allocations: 2.158 MB / 1.563 GB, free: 296 kB / 1.232 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.988e-06/1.428, allocations: 4.031 kB / 1.563 GB, free: 292 kB / 1.232 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006436/1.434, allocations: 2.283 MB / 1.565 GB, free: 13.97 MB / 1.248 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001881/1.436, allocations: 0.7359 MB / 1.566 GB, free: 13.21 MB / 1.248 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005883/1.437, allocations: 16 kB / 1.566 GB, free: 13.2 MB / 1.248 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002217/1.439, allocations: 163.8 kB / 1.566 GB, free: 13.04 MB / 1.248 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001227/1.439, allocations: 52.92 kB / 1.566 GB, free: 12.98 MB / 1.248 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001349/1.439, allocations: 59.94 kB / 1.566 GB, free: 12.93 MB / 1.248 GB Notification: Performance of sorting global known variables: time 0.006526/1.446, allocations: 3.692 MB / 1.569 GB, free: 9.254 MB / 1.248 GB Notification: Performance of sort global known variables: time 9.1e-08/1.446, allocations: 0 / 1.569 GB, free: 9.254 MB / 1.248 GB Notification: Performance of remove unused functions: time 0.005353/1.451, allocations: 1.767 MB / 1.571 GB, free: 7.488 MB / 1.248 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 (86): * Single equations (assignments): 75 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 8 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems 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 {(1,1)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001617/1.453, allocations: 0.6968 MB / 1.572 GB, free: 6.781 MB / 1.248 GB Notification: Performance of simCode: created initialization part: time 0.01256/1.465, allocations: 5.38 MB / 1.577 GB, free: 1.406 MB / 1.248 GB Notification: Performance of simCode: created event and clocks part: time 6.322e-06/1.465, allocations: 0 / 1.577 GB, free: 1.406 MB / 1.248 GB Notification: Performance of simCode: created simulation system equations: time 0.002824/1.468, allocations: 0.8493 MB / 1.578 GB, free: 0.5586 MB / 1.248 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00911/1.477, allocations: 2.255 MB / 1.58 GB, free: 14.37 MB / 1.264 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01405/1.491, allocations: 7.454 MB / 1.587 GB, free: 6.855 MB / 1.264 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002577/1.494, allocations: 2.528 MB / 1.59 GB, free: 4.297 MB / 1.264 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001415/1.495, allocations: 355.2 kB / 1.59 GB, free: 3.949 MB / 1.264 GB Notification: Performance of SimCode: time 1.372e-06/1.495, allocations: 0 / 1.59 GB, free: 3.949 MB / 1.264 GB Notification: Performance of Templates: time 0.1667/1.662, allocations: 127.4 MB / 1.715 GB, free: 5.07 MB / 1.389 GB " [Timeout remaining time 298] make -j1 -f Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous.makefile [Timeout 300] (rm -f Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous.pipe ; mkfifo Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous.pipe ; head -c 1048576 < Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous.pipe >> ../files/Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous.sim & ./Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous -abortSlowSimulation -alarm=400 -emit_protected -lv LOG_STATS > Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous.pipe 2>&1) [Timeout 400] diffSimulationResults("Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_Fluid_Movers_Examples_MoverContinuous.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_12_Buildings.Fluid.Movers.Examples.MoverContinuous.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: 29.562668836006196]