Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.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 0.0009546/0.0009546, allocations: 80.8 kB / 20.75 MB, free: 3.742 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 0.001097/0.001097, allocations: 161 kB / 24.17 MB, free: 328 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 0.9859/0.9859, allocations: 177.1 MB / 204.6 MB, free: 5.004 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 13.0.2-maint.13.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 13.0.2-maint.13.x/package.mo): time 1.88/1.88, allocations: 389.6 MB / 0.6354 GB, free: 12.3 MB / 0.6042 GB " [Timeout remaining time 178] Using package Buildings with version 13.0.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 13.0.2-maint.13.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.HeatExchangers.Examples.WaterHeater_u,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u") translateModel(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u") [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 1.162e-06/1.162e-06, allocations: 0 / 0.7752 GB, free: 5.379 MB / 0.7292 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.705e-05/1.821e-05, allocations: 5.078 kB / 0.7752 GB, free: 5.375 MB / 0.7292 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u): time 0.01541/0.01542, allocations: 20.35 MB / 0.7951 GB, free: 0.9844 MB / 0.7448 GB Notification: Performance of NFInst.instExpressions: time 0.01467/0.03009, allocations: 10.4 MB / 0.8052 GB, free: 6.641 MB / 0.7605 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001915/0.03201, allocations: 130.9 kB / 0.8053 GB, free: 6.512 MB / 0.7605 GB Notification: Performance of NFTyping.typeComponents: time 0.003053/0.03506, allocations: 1.652 MB / 0.807 GB, free: 4.859 MB / 0.7605 GB Notification: Performance of NFTyping.typeBindings: time 0.003994/0.03906, allocations: 2.364 MB / 0.8093 GB, free: 2.504 MB / 0.7605 GB Notification: Performance of NFTyping.typeClassSections: time 0.003499/0.04255, allocations: 2.327 MB / 0.8115 GB, free: 192 kB / 0.7605 GB Notification: Performance of NFFlatten.flatten: time 0.008256/0.05081, allocations: 8.831 MB / 0.8202 GB, free: 7.371 MB / 0.7761 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001729/0.05254, allocations: 1.577 MB / 0.8217 GB, free: 5.734 MB / 0.7761 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003837/0.05638, allocations: 3.028 MB / 0.8247 GB, free: 2.734 MB / 0.7761 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001388/0.05777, allocations: 1.293 MB / 0.8259 GB, free: 1.438 MB / 0.7761 GB Notification: Performance of NFPackage.collectConstants: time 0.0002234/0.05799, allocations: 191.9 kB / 0.8261 GB, free: 1.25 MB / 0.7761 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001448/0.05944, allocations: 1.088 MB / 0.8272 GB, free: 164 kB / 0.7761 GB Notification: Performance of NFScalarize.scalarize: time 0.000478/0.05991, allocations: 0.7239 MB / 0.8279 GB, free: 15.43 MB / 0.7917 GB Notification: Performance of NFVerifyModel.verify: time 0.0007364/0.06065, allocations: 0.8338 MB / 0.8287 GB, free: 14.6 MB / 0.7917 GB Notification: Performance of NFConvertDAE.convert: time 0.002541/0.06319, allocations: 2.472 MB / 0.8311 GB, free: 12.12 MB / 0.7917 GB Notification: Performance of FrontEnd - DAE generated: time 3.747e-06/0.0632, allocations: 0 / 0.8311 GB, free: 12.12 MB / 0.7917 GB Notification: Performance of FrontEnd: time 8.12e-07/0.0632, allocations: 0 / 0.8311 GB, free: 12.12 MB / 0.7917 GB Notification: Performance of Transformations before backend: time 2.236e-05/0.06322, allocations: 4 kB / 0.8311 GB, free: 12.11 MB / 0.7917 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 311 * Number of variables: 311 Notification: Performance of Generate backend data structure: time 0.002898/0.06612, allocations: 2.874 MB / 0.8339 GB, free: 9.176 MB / 0.7917 GB Notification: Performance of prepare preOptimizeDAE: time 3.221e-05/0.06615, allocations: 12.58 kB / 0.8339 GB, free: 9.164 MB / 0.7917 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008123/0.06696, allocations: 435.4 kB / 0.8343 GB, free: 8.738 MB / 0.7917 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002211/0.06917, allocations: 1.915 MB / 0.8362 GB, free: 6.727 MB / 0.7917 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.135e-05/0.06923, allocations: 98.45 kB / 0.8363 GB, free: 6.629 MB / 0.7917 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001354/0.06937, allocations: 140 kB / 0.8364 GB, free: 6.492 MB / 0.7917 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001354/0.07072, allocations: 1.216 MB / 0.8376 GB, free: 5.129 MB / 0.7917 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.507e-05/0.07075, allocations: 0 / 0.8376 GB, free: 5.129 MB / 0.7917 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.085e-05/0.07082, allocations: 56 kB / 0.8377 GB, free: 5.074 MB / 0.7917 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.941e-05/0.07085, allocations: 32 kB / 0.8377 GB, free: 5.043 MB / 0.7917 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005077/0.07136, allocations: 384 kB / 0.8381 GB, free: 4.648 MB / 0.7917 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 0.003901/0.07526, allocations: 4.326 MB / 0.8423 GB, free: 180 kB / 0.7917 GB Notification: Performance of preOpt comSubExp (simulation): time 0.000605/0.07586, allocations: 483.3 kB / 0.8428 GB, free: 15.7 MB / 0.8073 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002076/0.07607, allocations: 166.1 kB / 0.8429 GB, free: 15.53 MB / 0.8073 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001995/0.07806, allocations: 1.131 MB / 0.844 GB, free: 14.38 MB / 0.8073 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0003816/0.07845, allocations: 486 kB / 0.8445 GB, free: 13.84 MB / 0.8073 GB Notification: Performance of pre-optimization done (n=60): time 2.114e-06/0.07845, allocations: 0 / 0.8445 GB, free: 13.84 MB / 0.8073 GB Notification: Performance of matching and sorting (n=60): time 0.0007388/0.07919, allocations: 489.5 kB / 0.845 GB, free: 13.35 MB / 0.8073 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.167e-05/0.07923, allocations: 111.3 kB / 0.8451 GB, free: 13.22 MB / 0.8073 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001156/0.08038, allocations: 1.634 MB / 0.8467 GB, free: 11.55 MB / 0.8073 GB Notification: Performance of collectPreVariables (initialization): time 4.942e-05/0.08043, allocations: 37.7 kB / 0.8467 GB, free: 11.51 MB / 0.8073 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003664/0.0808, allocations: 0.7238 MB / 0.8474 GB, free: 10.77 MB / 0.8073 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001239/0.08092, allocations: 226.1 kB / 0.8476 GB, free: 10.55 MB / 0.8073 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001769/0.0811, allocations: 190.5 kB / 0.8478 GB, free: 10.36 MB / 0.8073 GB Notification: Performance of setup shared object (initialization): time 8.145e-05/0.08118, allocations: 353.9 kB / 0.8481 GB, free: 10.01 MB / 0.8073 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002267/0.08141, allocations: 153.3 kB / 0.8483 GB, free: 9.848 MB / 0.8073 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004312/0.08184, allocations: 0.7498 MB / 0.849 GB, free: 8.875 MB / 0.8073 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0005873/0.08243, allocations: 0.6728 MB / 0.8497 GB, free: 8.051 MB / 0.8073 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.244e-06/0.08243, allocations: 7.938 kB / 0.8497 GB, free: 8.043 MB / 0.8073 GB Notification: Performance of matching and sorting (n=118) (initialization): time 0.0007494/0.08318, allocations: 0.7042 MB / 0.8504 GB, free: 7.316 MB / 0.8073 GB Notification: Performance of prepare postOptimizeDAE: time 0.000273/0.08346, allocations: 37.7 kB / 0.8504 GB, free: 7.273 MB / 0.8073 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.26e-05/0.08347, allocations: 12 kB / 0.8504 GB, free: 7.262 MB / 0.8073 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.082e-05/0.08349, allocations: 16 kB / 0.8504 GB, free: 7.246 MB / 0.8073 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004434/0.08393, allocations: 223.6 kB / 0.8506 GB, free: 7.027 MB / 0.8073 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.287e-05/0.08395, allocations: 24.17 kB / 0.8507 GB, free: 7.004 MB / 0.8073 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004739/0.08442, allocations: 131.2 kB / 0.8508 GB, free: 6.875 MB / 0.8073 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.08e-05/0.08447, allocations: 39.98 kB / 0.8508 GB, free: 6.836 MB / 0.8073 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0003964/0.08487, allocations: 253.4 kB / 0.8511 GB, free: 6.574 MB / 0.8073 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004127/0.08528, allocations: 0.7381 MB / 0.8518 GB, free: 5.613 MB / 0.8073 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0005621/0.08584, allocations: 0.6818 MB / 0.8525 GB, free: 4.773 MB / 0.8073 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.567e-06/0.08585, allocations: 0 / 0.8525 GB, free: 4.773 MB / 0.8073 GB Notification: Performance of matching and sorting (n=118) (initialization_lambda0): time 0.0007253/0.08657, allocations: 0.7191 MB / 0.8532 GB, free: 4.031 MB / 0.8073 GB Notification: Performance of prepare postOptimizeDAE: time 2.282e-05/0.08659, allocations: 38.61 kB / 0.8532 GB, free: 3.988 MB / 0.8073 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.096e-06/0.0866, allocations: 12 kB / 0.8532 GB, free: 3.977 MB / 0.8073 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.066e-05/0.08661, allocations: 20 kB / 0.8532 GB, free: 3.957 MB / 0.8073 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004139/0.08703, allocations: 219.6 kB / 0.8534 GB, free: 3.742 MB / 0.8073 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.284e-05/0.08704, allocations: 23.92 kB / 0.8535 GB, free: 3.719 MB / 0.8073 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004595/0.0875, allocations: 111.5 kB / 0.8536 GB, free: 3.609 MB / 0.8073 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.792e-05/0.08755, allocations: 43.97 kB / 0.8536 GB, free: 3.566 MB / 0.8073 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 47 * Number of states: 0 () * Number of discrete variables: 6 (TSet.count,$PRE.TSet.count,TSet.T_start,$PRE.TSet.T_start,$whenCondition1,conPI.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (116): * Single equations (assignments): 114 * Array equations: 1 * Algorithm blocks: 1 * 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 0.0001516/0.0877, allocations: 251.8 kB / 0.8538 GB, free: 3.312 MB / 0.8073 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001362/0.08784, allocations: 135.8 kB / 0.854 GB, free: 3.18 MB / 0.8073 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.000698/0.08853, allocations: 0.5729 MB / 0.8545 GB, free: 2.598 MB / 0.8073 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.416e-06/0.08854, allocations: 8 kB / 0.8545 GB, free: 2.59 MB / 0.8073 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.398e-06/0.08855, allocations: 4 kB / 0.8545 GB, free: 2.586 MB / 0.8073 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.000297/0.08884, allocations: 295.8 kB / 0.8548 GB, free: 2.281 MB / 0.8073 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001713/0.09056, allocations: 1.778 MB / 0.8566 GB, free: 448 kB / 0.8073 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.406e-06/0.09056, allocations: 0 / 0.8566 GB, free: 448 kB / 0.8073 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003182/0.09088, allocations: 131.8 kB / 0.8567 GB, free: 316 kB / 0.8073 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001163/0.09099, allocations: 37.03 kB / 0.8567 GB, free: 276 kB / 0.8073 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.299e-05/0.09103, allocations: 19.98 kB / 0.8567 GB, free: 256 kB / 0.8073 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0008834/0.09191, allocations: 1.198 MB / 0.8579 GB, free: 14.97 MB / 0.823 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.154e-06/0.09191, allocations: 3.938 kB / 0.8579 GB, free: 14.96 MB / 0.823 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0007203/0.09263, allocations: 0.7532 MB / 0.8587 GB, free: 14.16 MB / 0.823 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003206/0.09295, allocations: 258.2 kB / 0.8589 GB, free: 13.91 MB / 0.823 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001244/0.09308, allocations: 16 kB / 0.8589 GB, free: 13.89 MB / 0.823 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003991/0.09348, allocations: 47.95 kB / 0.859 GB, free: 13.85 MB / 0.823 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.407e-05/0.09355, allocations: 60.48 kB / 0.859 GB, free: 13.79 MB / 0.823 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.991e-05/0.09359, allocations: 23.97 kB / 0.859 GB, free: 13.77 MB / 0.823 GB Notification: Performance of sorting global known variables: time 0.0006725/0.09426, allocations: 0.8479 MB / 0.8599 GB, free: 12.9 MB / 0.823 GB Notification: Performance of sort global known variables: time 5e-08/0.09426, allocations: 0 / 0.8599 GB, free: 12.9 MB / 0.823 GB Notification: Performance of remove unused functions: time 0.00134/0.0956, allocations: 0.9198 MB / 0.8608 GB, free: 11.98 MB / 0.823 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 5 (vol.dynBal.U,mov.motSpe.y,conPI.I.y,THeaOut.T,hea.vol.dynBal.U) * Number of discrete variables: 3 ($whenCondition1,TSet.T_start,TSet.count) * Number of discrete states: 1 (TSet.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (70): * Single equations (assignments): 63 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 2 * 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 {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0003982/0.096, allocations: 253.9 kB / 0.861 GB, free: 11.72 MB / 0.823 GB Notification: Performance of simCode: created initialization part: time 0.0009244/0.09693, allocations: 0.9128 MB / 0.8619 GB, free: 10.77 MB / 0.823 GB Notification: Performance of simCode: created event and clocks part: time 1.995e-05/0.09695, allocations: 28.56 kB / 0.8619 GB, free: 10.74 MB / 0.823 GB Notification: Performance of simCode: created simulation system equations: time 0.0003303/0.09728, allocations: 320.3 kB / 0.8622 GB, free: 10.42 MB / 0.823 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002047/0.09932, allocations: 1.132 MB / 0.8633 GB, free: 9.309 MB / 0.823 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003463/0.1028, allocations: 3.143 MB / 0.8664 GB, free: 6.086 MB / 0.823 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002816/0.1031, allocations: 406.5 kB / 0.8668 GB, free: 5.656 MB / 0.823 GB Notification: Performance of simCode: alias equations: time 0.000926/0.104, allocations: 421.2 kB / 0.8672 GB, free: 5.242 MB / 0.823 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001381/0.1054, allocations: 0.7877 MB / 0.868 GB, free: 4.438 MB / 0.823 GB Notification: Performance of SimCode: time 8.21e-07/0.1054, allocations: 0 / 0.868 GB, free: 4.438 MB / 0.823 GB Notification: Performance of Templates: time 0.05111/0.1565, allocations: 42.94 MB / 0.9099 GB, free: 10.6 MB / 0.8698 GB " [Timeout remaining time 300] make -j1 -f Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.makefile [Timeout 300] (rm -f Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe ; mkfifo Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe ; head -c 1048576 < Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe >> ../files/Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.sim & ./Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u -abortSlowSimulation -alarm=240 -lv LOG_STATS > Buildings_13_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe 2>&1) [Timeout 240] [Calling sys.exit(0), Time elapsed: 5.793383097276092]