Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T.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 0.00143/0.00143, allocations: 72.83 kB / 20.72 MB, free: 3.77 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 0.001253/0.001253, allocations: 169 kB / 24.14 MB, free: 360 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 1.025/1.025, allocations: 177.2 MB / 204.6 MB, free: 5.504 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 0.6828/0.6828, allocations: 115 MB / 376 MB, free: 7.492 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.HeatExchangers.Examples.AirHeater_T,tolerance=1e-08,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T") translateModel(IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T,tolerance=1e-08,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 2.064e-06/2.064e-06, allocations: 0 / 428.8 MB, free: 2.734 MB / 394.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 2.044e-05/2.25e-05, allocations: 2.312 kB / 428.8 MB, free: 2.73 MB / 394.7 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T): time 0.3721/0.3722, allocations: 156.9 MB / 0.572 GB, free: 8.73 MB / 0.5105 GB Notification: Performance of NFInst.instExpressions: time 0.01492/0.3871, allocations: 11.19 MB / 0.5829 GB, free: 13.54 MB / 0.5261 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001308/0.3884, allocations: 126.9 kB / 0.583 GB, free: 13.41 MB / 0.5261 GB Notification: Performance of NFTyping.typeComponents: time 0.002623/0.391, allocations: 1.657 MB / 0.5847 GB, free: 11.75 MB / 0.5261 GB Notification: Performance of NFTyping.typeBindings: time 0.002833/0.3938, allocations: 2.465 MB / 0.5871 GB, free: 9.273 MB / 0.5261 GB Notification: Performance of NFTyping.typeClassSections: time 0.003209/0.3971, allocations: 2.586 MB / 0.5896 GB, free: 6.691 MB / 0.5261 GB Notification: Performance of NFFlatten.flatten: time 0.006263/0.4033, allocations: 8.528 MB / 0.5979 GB, free: 14.14 MB / 0.5417 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001655/0.405, allocations: 1.547 MB / 0.5994 GB, free: 12.56 MB / 0.5417 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002884/0.4079, allocations: 2.987 MB / 0.6024 GB, free: 9.602 MB / 0.5417 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001322/0.4092, allocations: 1.365 MB / 0.6037 GB, free: 8.238 MB / 0.5417 GB Notification: Performance of NFPackage.collectConstants: time 0.0002278/0.4094, allocations: 200 kB / 0.6039 GB, free: 8.043 MB / 0.5417 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001878/0.4113, allocations: 1.306 MB / 0.6052 GB, free: 6.734 MB / 0.5417 GB Notification: Performance of NFScalarize.scalarize: time 0.0005802/0.4119, allocations: 0.9502 MB / 0.6061 GB, free: 5.781 MB / 0.5417 GB Notification: Performance of NFVerifyModel.verify: time 0.0006789/0.4125, allocations: 0.8923 MB / 0.607 GB, free: 4.887 MB / 0.5417 GB Notification: Performance of NFConvertDAE.convert: time 0.002447/0.415, allocations: 2.726 MB / 0.6096 GB, free: 2.152 MB / 0.5417 GB Notification: Performance of FrontEnd - DAE generated: time 3.798e-06/0.415, allocations: 0 / 0.6096 GB, free: 2.152 MB / 0.5417 GB Notification: Performance of FrontEnd: time 9.91e-07/0.415, allocations: 3.938 kB / 0.6096 GB, free: 2.148 MB / 0.5417 GB Notification: Performance of Transformations before backend: time 1.724e-05/0.415, allocations: 0 / 0.6096 GB, free: 2.148 MB / 0.5417 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 334 * Number of variables: 334 Notification: Performance of Generate backend data structure: time 0.002604/0.4176, allocations: 3.055 MB / 0.6126 GB, free: 15.04 MB / 0.5573 GB Notification: Performance of prepare preOptimizeDAE: time 3.274e-05/0.4176, allocations: 12.03 kB / 0.6126 GB, free: 15.03 MB / 0.5573 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003171/0.4208, allocations: 1.1 MB / 0.6137 GB, free: 13.93 MB / 0.5573 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002299/0.4231, allocations: 2.031 MB / 0.6157 GB, free: 11.8 MB / 0.5573 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.711e-05/0.4232, allocations: 110.6 kB / 0.6158 GB, free: 11.7 MB / 0.5573 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001604/0.4233, allocations: 148 kB / 0.6159 GB, free: 11.55 MB / 0.5573 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001542/0.4249, allocations: 1.426 MB / 0.6173 GB, free: 10 MB / 0.5573 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.592e-05/0.4249, allocations: 8 kB / 0.6173 GB, free: 9.996 MB / 0.5573 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.643e-05/0.425, allocations: 52 kB / 0.6174 GB, free: 9.945 MB / 0.5573 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.014e-05/0.425, allocations: 47.17 kB / 0.6174 GB, free: 9.898 MB / 0.5573 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008172/0.4259, allocations: 0.5207 MB / 0.6179 GB, free: 9.363 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 0.005397/0.4313, allocations: 4.827 MB / 0.6226 GB, free: 4.398 MB / 0.5573 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0009646/0.4322, allocations: 0.6546 MB / 0.6233 GB, free: 3.742 MB / 0.5573 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002882/0.4325, allocations: 237.7 kB / 0.6235 GB, free: 3.512 MB / 0.5573 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001913/0.4327, allocations: 68.59 kB / 0.6236 GB, free: 3.441 MB / 0.5573 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004492/0.4331, allocations: 0.5128 MB / 0.6241 GB, free: 2.879 MB / 0.5573 GB Notification: Performance of pre-optimization done (n=80): time 3.066e-06/0.4332, allocations: 0 / 0.6241 GB, free: 2.879 MB / 0.5573 GB Notification: Performance of matching and sorting (n=80): time 0.001263/0.4344, allocations: 0.7402 MB / 0.6248 GB, free: 2.133 MB / 0.5573 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.528e-05/0.4344, allocations: 60.06 kB / 0.6248 GB, free: 2.062 MB / 0.5573 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001289/0.4357, allocations: 1.774 MB / 0.6266 GB, free: 272 kB / 0.5573 GB Notification: Performance of collectPreVariables (initialization): time 6.483e-05/0.4358, allocations: 45.7 kB / 0.6266 GB, free: 220 kB / 0.5573 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003819/0.4362, allocations: 0.7374 MB / 0.6273 GB, free: 15.46 MB / 0.573 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001697/0.4364, allocations: 297.4 kB / 0.6276 GB, free: 15.17 MB / 0.573 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002349/0.4366, allocations: 234.7 kB / 0.6279 GB, free: 14.93 MB / 0.573 GB Notification: Performance of setup shared object (initialization): time 8.723e-05/0.4367, allocations: 353.8 kB / 0.6282 GB, free: 14.58 MB / 0.573 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002579/0.4369, allocations: 208 kB / 0.6284 GB, free: 14.37 MB / 0.573 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004872/0.4374, allocations: 0.8661 MB / 0.6292 GB, free: 13.25 MB / 0.573 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006889/0.4381, allocations: 0.8446 MB / 0.6301 GB, free: 12.22 MB / 0.573 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.751e-06/0.4381, allocations: 4 kB / 0.6301 GB, free: 12.22 MB / 0.573 GB Notification: Performance of matching and sorting (n=147) (initialization): time 0.0009192/0.439, allocations: 0.8697 MB / 0.6309 GB, free: 11.33 MB / 0.573 GB Notification: Performance of prepare postOptimizeDAE: time 3.583e-05/0.4391, allocations: 45.64 kB / 0.631 GB, free: 11.28 MB / 0.573 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.318e-05/0.4391, allocations: 13.58 kB / 0.631 GB, free: 11.27 MB / 0.573 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.177e-05/0.4391, allocations: 20 kB / 0.631 GB, free: 11.25 MB / 0.573 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008166/0.4399, allocations: 351.4 kB / 0.6313 GB, free: 10.9 MB / 0.573 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.477e-05/0.4399, allocations: 27.92 kB / 0.6313 GB, free: 10.88 MB / 0.573 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007636/0.4407, allocations: 203 kB / 0.6315 GB, free: 10.68 MB / 0.573 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001719/0.4409, allocations: 51.92 kB / 0.6316 GB, free: 10.62 MB / 0.573 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0004545/0.4413, allocations: 312.2 kB / 0.6319 GB, free: 10.31 MB / 0.573 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004835/0.4418, allocations: 0.8712 MB / 0.6327 GB, free: 9.184 MB / 0.573 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006551/0.4425, allocations: 0.8268 MB / 0.6335 GB, free: 8.176 MB / 0.573 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.891e-06/0.4425, allocations: 8.844 kB / 0.6336 GB, free: 8.168 MB / 0.573 GB Notification: Performance of matching and sorting (n=147) (initialization_lambda0): time 0.0008878/0.4434, allocations: 0.8746 MB / 0.6344 GB, free: 7.273 MB / 0.573 GB Notification: Performance of prepare postOptimizeDAE: time 2.287e-05/0.4434, allocations: 40.02 kB / 0.6344 GB, free: 7.23 MB / 0.573 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.055e-05/0.4434, allocations: 19.94 kB / 0.6345 GB, free: 7.211 MB / 0.573 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.015e-05/0.4434, allocations: 20 kB / 0.6345 GB, free: 7.191 MB / 0.573 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007821/0.4442, allocations: 355.4 kB / 0.6348 GB, free: 6.844 MB / 0.573 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.431e-05/0.4442, allocations: 23.94 kB / 0.6348 GB, free: 6.82 MB / 0.573 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006912/0.4449, allocations: 190.3 kB / 0.635 GB, free: 6.637 MB / 0.573 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.71e-05/0.445, allocations: 47.98 kB / 0.6351 GB, free: 6.59 MB / 0.573 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 58 * 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 (145): * Single equations (assignments): 143 * 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 0.0001778/0.4451, allocations: 259.9 kB / 0.6353 GB, free: 6.328 MB / 0.573 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001658/0.4453, allocations: 151.8 kB / 0.6355 GB, free: 6.18 MB / 0.573 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0008786/0.4462, allocations: 0.6886 MB / 0.6361 GB, free: 5.48 MB / 0.573 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.46e-06/0.4462, allocations: 8 kB / 0.6361 GB, free: 5.473 MB / 0.573 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.126e-06/0.4462, allocations: 0 / 0.6361 GB, free: 5.473 MB / 0.573 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0005585/0.4467, allocations: 0.7048 MB / 0.6368 GB, free: 4.68 MB / 0.573 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002039/0.4488, allocations: 1.696 MB / 0.6385 GB, free: 2.93 MB / 0.573 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.747e-06/0.4488, allocations: 4 kB / 0.6385 GB, free: 2.926 MB / 0.573 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006742/0.4495, allocations: 243.7 kB / 0.6387 GB, free: 2.688 MB / 0.573 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002299/0.4497, allocations: 119 kB / 0.6388 GB, free: 2.566 MB / 0.573 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.941e-05/0.4497, allocations: 27.97 kB / 0.6389 GB, free: 2.539 MB / 0.573 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0006483/0.4504, allocations: 1.239 MB / 0.6401 GB, free: 1.207 MB / 0.573 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.055e-06/0.4504, allocations: 7.875 kB / 0.6401 GB, free: 1.199 MB / 0.573 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001011/0.4514, allocations: 0.9526 MB / 0.641 GB, free: 212 kB / 0.573 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003469/0.4518, allocations: 270.3 kB / 0.6413 GB, free: 15.94 MB / 0.5886 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001427/0.4519, allocations: 23.98 kB / 0.6413 GB, free: 15.91 MB / 0.5886 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005979/0.4525, allocations: 98.5 kB / 0.6414 GB, free: 15.82 MB / 0.5886 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.879e-05/0.4526, allocations: 56.55 kB / 0.6414 GB, free: 15.77 MB / 0.5886 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.855e-05/0.4526, allocations: 27.97 kB / 0.6415 GB, free: 15.74 MB / 0.5886 GB Notification: Performance of sorting global known variables: time 0.0006067/0.4532, allocations: 0.8267 MB / 0.6423 GB, free: 14.9 MB / 0.5886 GB Notification: Performance of sort global known variables: time 9.1e-08/0.4532, allocations: 0 / 0.6423 GB, free: 14.9 MB / 0.5886 GB Notification: Performance of remove unused functions: time 0.001468/0.4547, allocations: 1.017 MB / 0.6433 GB, free: 13.88 MB / 0.5886 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 7 (vol.dynBal.medium.Xi[1],vol.dynBal.U,vol.dynBal.m,mov.motSpe.y,conPI.I.y,THeaOut.T,hea.outCon.T) * 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 (80): * Single equations (assignments): 77 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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 0.001217/0.4559, allocations: 0.5594 MB / 0.6438 GB, free: 13.58 MB / 0.5886 GB Notification: Performance of simCode: created initialization part: time 0.001211/0.4571, allocations: 1.177 MB / 0.645 GB, free: 12.37 MB / 0.5886 GB Notification: Performance of simCode: created event and clocks part: time 2.239e-05/0.4572, allocations: 24.5 kB / 0.645 GB, free: 12.35 MB / 0.5886 GB Notification: Performance of simCode: created simulation system equations: time 0.0005114/0.4577, allocations: 400.3 kB / 0.6454 GB, free: 11.94 MB / 0.5886 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002156/0.4598, allocations: 1.201 MB / 0.6465 GB, free: 10.8 MB / 0.5886 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004244/0.4641, allocations: 3.6 MB / 0.6501 GB, free: 7.129 MB / 0.5886 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003371/0.4644, allocations: 475.8 kB / 0.6505 GB, free: 6.641 MB / 0.5886 GB Notification: Performance of simCode: alias equations: time 0.001274/0.4657, allocations: 474.8 kB / 0.651 GB, free: 6.172 MB / 0.5886 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001564/0.4672, allocations: 0.8015 MB / 0.6518 GB, free: 5.352 MB / 0.5886 GB Notification: Performance of SimCode: time 1.452e-06/0.4672, allocations: 0 / 0.6518 GB, free: 5.352 MB / 0.5886 GB Notification: Performance of Templates: time 0.2768/0.7441, allocations: 46.33 MB / 0.697 GB, free: 69.11 MB / 0.5886 GB " [Timeout remaining time 659] make -j1 -f IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T.makefile [Timeout 660] (rm -f IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T.sim & ./IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T -abortSlowSimulation -alarm=240 -s gbode -gbm=radauIIA3 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.HeatExchangers.Examples.AirHeater_T.pipe 2>&1) [Timeout 240] [Calling sys.exit(0), Time elapsed: 4.950882654637098]