Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.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 0.001735/0.001735, allocations: 99.66 kB / 18.94 MB, free: 2.832 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 0.002197/0.002197, allocations: 219.6 kB / 22.25 MB, free: 5.105 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 1.541/1.541, allocations: 230.6 MB / 256 MB, free: 7.824 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings master/package.mo): time 3.349/3.349, allocations: 0.5107 GB / 0.8158 GB, free: 17.84 MB / 0.6231 GB " [Timeout remaining time 176] Using package Buildings with version 13.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 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: "" <> buildModelFMU(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow",fmuType="me",version="2.0",platforms={"static"}) [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 0.002022/0.002022, allocations: 76.53 kB / 1.186 GB, free: 13.84 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3487/0.3507, allocations: 181.9 MB / 1.363 GB, free: 14.13 MB / 1.061 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow): time 0.002569/0.3532, allocations: 1.082 MB / 1.364 GB, free: 13.04 MB / 1.061 GB Notification: Performance of NFInst.instExpressions: time 0.001558/0.3548, allocations: 1.049 MB / 1.366 GB, free: 11.98 MB / 1.061 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001282/0.3549, allocations: 4 kB / 1.366 GB, free: 11.98 MB / 1.061 GB Notification: Performance of NFTyping.typeComponents: time 7.457e-05/0.355, allocations: 27.66 kB / 1.366 GB, free: 11.95 MB / 1.061 GB Notification: Performance of NFTyping.typeBindings: time 0.0001559/0.3552, allocations: 35.73 kB / 1.366 GB, free: 11.91 MB / 1.061 GB Notification: Performance of NFTyping.typeClassSections: time 0.0003304/0.3555, allocations: 83.86 kB / 1.366 GB, free: 11.83 MB / 1.061 GB Notification: Performance of NFFlatten.flatten: time 0.0003046/0.3558, allocations: 232.2 kB / 1.366 GB, free: 11.6 MB / 1.061 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002382/0.356, allocations: 88.59 kB / 1.366 GB, free: 11.51 MB / 1.061 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0002646/0.3563, allocations: 103.6 kB / 1.366 GB, free: 11.41 MB / 1.061 GB Notification: Performance of NFSimplifyModel.simplify: time 0.000143/0.3564, allocations: 87.48 kB / 1.366 GB, free: 11.32 MB / 1.061 GB Notification: Performance of NFPackage.collectConstants: time 4.299e-05/0.3565, allocations: 24 kB / 1.366 GB, free: 11.3 MB / 1.061 GB Notification: Performance of NFFlatten.collectFunctions: time 6.552e-05/0.3566, allocations: 28 kB / 1.366 GB, free: 11.27 MB / 1.061 GB Notification: Performance of NFScalarize.scalarize: time 5.191e-05/0.3566, allocations: 55.83 kB / 1.366 GB, free: 11.22 MB / 1.061 GB Notification: Performance of NFVerifyModel.verify: time 8.429e-05/0.3567, allocations: 87.53 kB / 1.366 GB, free: 11.13 MB / 1.061 GB Notification: Performance of NFConvertDAE.convert: time 0.0003729/0.3571, allocations: 314.9 kB / 1.367 GB, free: 10.82 MB / 1.061 GB Notification: Performance of FrontEnd - DAE generated: time 4.699e-06/0.3571, allocations: 0 / 1.367 GB, free: 10.82 MB / 1.061 GB Notification: Performance of FrontEnd: time 1.493e-06/0.3571, allocations: 0 / 1.367 GB, free: 10.82 MB / 1.061 GB Notification: Performance of Transformations before backend: time 1.255e-05/0.3571, allocations: 0 / 1.367 GB, free: 10.82 MB / 1.061 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 52 * Number of variables: 52 Notification: Performance of Generate backend data structure: time 0.000787/0.3579, allocations: 429.8 kB / 1.367 GB, free: 10.37 MB / 1.061 GB Notification: Performance of prepare preOptimizeDAE: time 3.982e-05/0.3579, allocations: 8.031 kB / 1.367 GB, free: 10.36 MB / 1.061 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 6.151e-05/0.358, allocations: 54.73 kB / 1.367 GB, free: 10.3 MB / 1.061 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001638/0.3581, allocations: 32.78 kB / 1.367 GB, free: 10.27 MB / 1.061 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004946/0.3586, allocations: 226.4 kB / 1.367 GB, free: 10.02 MB / 1.061 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.85e-05/0.3587, allocations: 20.75 kB / 1.367 GB, free: 10 MB / 1.061 GB Notification: Performance of preOpt expandDerOperator (simulation): time 3.45e-05/0.3587, allocations: 20.38 kB / 1.367 GB, free: 9.984 MB / 1.061 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004346/0.3591, allocations: 195.8 kB / 1.368 GB, free: 9.789 MB / 1.061 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.373e-05/0.3591, allocations: 3.938 kB / 1.368 GB, free: 9.785 MB / 1.061 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.306e-05/0.3592, allocations: 8 kB / 1.368 GB, free: 9.777 MB / 1.061 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.083e-05/0.3592, allocations: 8 kB / 1.368 GB, free: 9.77 MB / 1.061 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0004155/0.3596, allocations: 161.6 kB / 1.368 GB, free: 9.613 MB / 1.061 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0008399/0.3604, allocations: 0.5065 MB / 1.368 GB, free: 9.062 MB / 1.061 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0003717/0.3608, allocations: 146.5 kB / 1.368 GB, free: 8.91 MB / 1.061 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001775/0.361, allocations: 60.81 kB / 1.368 GB, free: 8.848 MB / 1.061 GB Notification: Performance of preOpt evalFunc (simulation): time 2.312e-05/0.361, allocations: 3.906 kB / 1.368 GB, free: 8.844 MB / 1.061 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.804e-05/0.361, allocations: 38.56 kB / 1.368 GB, free: 8.797 MB / 1.061 GB Notification: Performance of pre-optimization done (n=17): time 3.396e-06/0.361, allocations: 3.984 kB / 1.368 GB, free: 8.793 MB / 1.061 GB Notification: Performance of matching and sorting (n=17): time 0.0006242/0.3617, allocations: 215.4 kB / 1.369 GB, free: 8.578 MB / 1.061 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.965e-05/0.3617, allocations: 55.41 kB / 1.369 GB, free: 8.512 MB / 1.061 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001723/0.3619, allocations: 182.7 kB / 1.369 GB, free: 8.324 MB / 1.061 GB Notification: Performance of collectPreVariables (initialization): time 2.685e-05/0.3619, allocations: 33.64 kB / 1.369 GB, free: 8.285 MB / 1.061 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001054/0.362, allocations: 152.4 kB / 1.369 GB, free: 8.133 MB / 1.061 GB Notification: Performance of collectInitialBindings (initialization): time 3.965e-05/0.362, allocations: 43.62 kB / 1.369 GB, free: 8.09 MB / 1.061 GB Notification: Performance of simplifyInitialFunctions (initialization): time 8.469e-05/0.3621, allocations: 61.64 kB / 1.369 GB, free: 8.023 MB / 1.061 GB Notification: Performance of setup shared object (initialization): time 0.0001675/0.3623, allocations: 322.8 kB / 1.369 GB, free: 7.699 MB / 1.061 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001742/0.3625, allocations: 59.95 kB / 1.37 GB, free: 7.641 MB / 1.061 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002071/0.3627, allocations: 97.02 kB / 1.37 GB, free: 7.527 MB / 1.061 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003402/0.363, allocations: 151 kB / 1.37 GB, free: 7.363 MB / 1.061 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.864e-06/0.363, allocations: 0 / 1.37 GB, free: 7.363 MB / 1.061 GB Notification: Performance of matching and sorting (n=22) (initialization): time 0.0004238/0.3634, allocations: 189.2 kB / 1.37 GB, free: 7.172 MB / 1.061 GB Notification: Performance of prepare postOptimizeDAE: time 1.469e-05/0.3635, allocations: 12.16 kB / 1.37 GB, free: 7.16 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.519e-06/0.3635, allocations: 0 / 1.37 GB, free: 7.16 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.547e-05/0.3635, allocations: 4 kB / 1.37 GB, free: 7.156 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001825/0.3637, allocations: 39.91 kB / 1.37 GB, free: 7.117 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 5.841e-06/0.3637, allocations: 0 / 1.37 GB, free: 7.117 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001077/0.3638, allocations: 19.88 kB / 1.37 GB, free: 7.098 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.629e-05/0.3638, allocations: 12 kB / 1.37 GB, free: 7.086 MB / 1.061 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 6 * Number of states: 0 () * Number of discrete variables: 15 (reaToInt2.y,actAirSet.or4.y,actAirSet.or2.y,actAirSet.or1.y,actAirSet.ifSetBac.y,actAirSet.ifWarUp.y,actAirSet.ifSetUp.y,actAirSet.ifCooDow.y,actAirSet.ifOcc.y,actAirSet.or3.y,actAirSet.warUpMod.y,actAirSet.setBacMod.y,actAirSet.setUpMod.y,actAirSet.cooDowMod.y,actAirSet.occMod.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (22): * Single equations (assignments): 22 * 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 0.0001776/0.364, allocations: 137.8 kB / 1.37 GB, free: 6.941 MB / 1.061 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 3.745e-05/0.364, allocations: 19.84 kB / 1.37 GB, free: 6.922 MB / 1.061 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 4.455e-05/0.3641, allocations: 25.8 kB / 1.37 GB, free: 6.898 MB / 1.061 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.994e-06/0.3641, allocations: 0 / 1.37 GB, free: 6.898 MB / 1.061 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.457e-06/0.3641, allocations: 0 / 1.37 GB, free: 6.898 MB / 1.061 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.906e-06/0.3641, allocations: 0 / 1.37 GB, free: 6.898 MB / 1.061 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0002924/0.3644, allocations: 232.6 kB / 1.37 GB, free: 6.629 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.496e-06/0.3644, allocations: 3.984 kB / 1.37 GB, free: 6.625 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001269/0.3645, allocations: 27.98 kB / 1.37 GB, free: 6.598 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.184e-06/0.3645, allocations: 4 kB / 1.37 GB, free: 6.594 MB / 1.061 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.076e-05/0.3645, allocations: 0 / 1.37 GB, free: 6.594 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.462e-06/0.3645, allocations: 4 kB / 1.37 GB, free: 6.59 MB / 1.061 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.01e-07/0.3645, allocations: 0 / 1.37 GB, free: 6.59 MB / 1.061 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004409/0.3649, allocations: 265.8 kB / 1.371 GB, free: 6.316 MB / 1.061 GB Notification: Performance of postOpt removeConstants (simulation): time 2.449e-05/0.365, allocations: 19.84 kB / 1.371 GB, free: 6.297 MB / 1.061 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 2.266e-05/0.365, allocations: 7.938 kB / 1.371 GB, free: 6.289 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000113/0.3651, allocations: 7.984 kB / 1.371 GB, free: 6.281 MB / 1.061 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.988e-05/0.3652, allocations: 27.88 kB / 1.371 GB, free: 6.254 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.256e-05/0.3652, allocations: 4 kB / 1.371 GB, free: 6.25 MB / 1.061 GB Notification: Performance of sorting global known variables: time 9.325e-05/0.3653, allocations: 123.2 kB / 1.371 GB, free: 6.129 MB / 1.061 GB Notification: Performance of sort global known variables: time 6e-08/0.3653, allocations: 0 / 1.371 GB, free: 6.129 MB / 1.061 GB Notification: Performance of remove unused functions: time 0.0002758/0.3656, allocations: 35.89 kB / 1.371 GB, free: 6.094 MB / 1.061 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 10 (actAirSet.or3.y,actAirSet.ifOcc.y,actAirSet.ifCooDow.y,actAirSet.ifSetUp.y,actAirSet.ifWarUp.y,actAirSet.ifSetBac.y,actAirSet.or1.y,actAirSet.or2.y,actAirSet.or4.y,reaToInt2.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (17): * Single equations (assignments): 17 * 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 Backend phase and start with SimCode phase: time 0.000795/0.3664, allocations: 0.8046 MB / 1.372 GB, free: 5.262 MB / 1.061 GB Notification: Performance of simCode: created initialization part: time 0.0004148/0.3668, allocations: 153.6 kB / 1.372 GB, free: 5.113 MB / 1.061 GB Notification: Performance of simCode: created event and clocks part: time 1.573e-06/0.3668, allocations: 0 / 1.372 GB, free: 5.113 MB / 1.061 GB Notification: Performance of simCode: created simulation system equations: time 0.0001797/0.367, allocations: 71.89 kB / 1.372 GB, free: 5.043 MB / 1.061 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002901/0.3672, allocations: 16 kB / 1.372 GB, free: 5.027 MB / 1.061 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002672/0.3699, allocations: 1.985 MB / 1.374 GB, free: 2.93 MB / 1.061 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001237/0.37, allocations: 121.2 kB / 1.374 GB, free: 2.793 MB / 1.061 GB Notification: Performance of simCode: alias equations: time 0.00011/0.3701, allocations: 33.39 kB / 1.374 GB, free: 2.758 MB / 1.061 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001171/0.3703, allocations: 63.42 kB / 1.374 GB, free: 2.695 MB / 1.061 GB Notification: Performance of SimCode: time 6.21e-07/0.3703, allocations: 0 / 1.374 GB, free: 2.695 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03116/0.4014, allocations: 3.832 MB / 1.378 GB, free: 15.07 MB / 1.076 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.39/11.79, allocations: 5.75 kB / 1.378 GB, free: 15.06 MB / 1.076 GB " [Timeout remaining time 288] (rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow_res.mat --tempDir=temp_Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow_fmu --startTime=0 --stopTime=3600 --stepSize=1.44 --timeout=800 --tolerance=1e-06 Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow.fmu > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.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: 18.662378028966486]