Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow.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 0.001484/0.001484, allocations: 116.1 kB / 17.16 MB, free: 6.023 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 0.001667/0.001667, allocations: 205.5 kB / 20.13 MB, free: 3.078 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 1.509/1.509, allocations: 230.6 MB / 253.5 MB, free: 15.1 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 2.949/2.949, allocations: 0.5003 GB / 0.8026 GB, free: 6.891 MB / 0.6387 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.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_AHUs_MultiZone_VAV_SetPoints_OutdoorAirFlow_Title24_Validation_OutdoorAirFlow",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_AHUs_MultiZone_VAV_SetPoints_OutdoorAirFlow_Title24_Validation_OutdoorAirFlow",fmuType="cs",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 0.00214/0.00214, allocations: 71.89 kB / 1.165 GB, free: 436 kB / 0.9356 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.9859/0.9881, allocations: 179 MB / 1.34 GB, free: 16.34 MB / 1.061 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow): time 0.003005/0.9911, allocations: 1.548 MB / 1.342 GB, free: 15.26 MB / 1.061 GB Notification: Performance of NFInst.instExpressions: time 0.0006933/0.9918, allocations: 312.2 kB / 1.342 GB, free: 15.03 MB / 1.061 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001706/0.992, allocations: 14.53 kB / 1.342 GB, free: 15.02 MB / 1.061 GB Notification: Performance of NFTyping.typeComponents: time 0.0002925/0.9922, allocations: 77.77 kB / 1.342 GB, free: 14.97 MB / 1.061 GB Notification: Performance of NFTyping.typeBindings: time 0.0001967/0.9924, allocations: 57.31 kB / 1.342 GB, free: 14.93 MB / 1.061 GB Notification: Performance of NFTyping.typeClassSections: time 0.0002557/0.9927, allocations: 113.2 kB / 1.342 GB, free: 14.86 MB / 1.061 GB Notification: Performance of NFFlatten.flatten: time 0.000497/0.9932, allocations: 428.8 kB / 1.343 GB, free: 14.66 MB / 1.061 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0005453/0.9937, allocations: 364.6 kB / 1.343 GB, free: 14.5 MB / 1.061 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000174/0.9939, allocations: 186.6 kB / 1.343 GB, free: 14.4 MB / 1.061 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0002726/0.9942, allocations: 245.5 kB / 1.343 GB, free: 14.27 MB / 1.061 GB Notification: Performance of NFPackage.collectConstants: time 8.303e-05/0.9943, allocations: 54.12 kB / 1.344 GB, free: 14.27 MB / 1.061 GB Notification: Performance of NFFlatten.collectFunctions: time 7.827e-05/0.9944, allocations: 53.19 kB / 1.344 GB, free: 14.27 MB / 1.061 GB Notification: Performance of NFScalarize.scalarize: time 0.000185/0.9945, allocations: 183.5 kB / 1.344 GB, free: 14.18 MB / 1.061 GB Notification: Performance of NFVerifyModel.verify: time 0.0002147/0.9948, allocations: 269.6 kB / 1.344 GB, free: 13.99 MB / 1.061 GB Notification: Performance of NFConvertDAE.convert: time 0.0009905/0.9957, allocations: 0.8865 MB / 1.345 GB, free: 13.69 MB / 1.061 GB Notification: Performance of FrontEnd - DAE generated: time 5.511e-06/0.9957, allocations: 4.797 kB / 1.345 GB, free: 13.69 MB / 1.061 GB Notification: Performance of FrontEnd: time 1.472e-06/0.9957, allocations: 0 / 1.345 GB, free: 13.69 MB / 1.061 GB Notification: Performance of Transformations before backend: time 1.232e-05/0.9958, allocations: 0 / 1.345 GB, free: 13.69 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: 127 * Number of variables: 127 Notification: Performance of Generate backend data structure: time 0.001304/0.9971, allocations: 0.873 MB / 1.346 GB, free: 13.04 MB / 1.061 GB Notification: Performance of prepare preOptimizeDAE: time 5.315e-05/0.9971, allocations: 10.23 kB / 1.346 GB, free: 13.04 MB / 1.061 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 3.178e-05/0.9972, allocations: 13.88 kB / 1.346 GB, free: 13.04 MB / 1.061 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001062/0.9973, allocations: 96.91 kB / 1.346 GB, free: 12.97 MB / 1.061 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000108/0.9974, allocations: 66.77 kB / 1.346 GB, free: 12.93 MB / 1.061 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006274/0.998, allocations: 471.1 kB / 1.346 GB, free: 12.61 MB / 1.061 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.723e-05/0.998, allocations: 38.28 kB / 1.346 GB, free: 12.59 MB / 1.061 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.55e-05/0.9981, allocations: 52.22 kB / 1.346 GB, free: 12.57 MB / 1.061 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009063/0.999, allocations: 0.5303 MB / 1.347 GB, free: 12.36 MB / 1.061 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.752e-05/0.999, allocations: 0 / 1.347 GB, free: 12.36 MB / 1.061 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.444e-05/0.9991, allocations: 20.84 kB / 1.347 GB, free: 12.35 MB / 1.061 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.468e-05/0.9991, allocations: 16.34 kB / 1.347 GB, free: 12.34 MB / 1.061 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.000857/0.9999, allocations: 0.5063 MB / 1.347 GB, free: 12.18 MB / 1.061 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002626/1.003, allocations: 1.834 MB / 1.349 GB, free: 11.09 MB / 1.061 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0004156/1.003, allocations: 125.1 kB / 1.349 GB, free: 11.03 MB / 1.061 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001072/1.003, allocations: 66.27 kB / 1.349 GB, free: 11 MB / 1.061 GB Notification: Performance of preOpt evalFunc (simulation): time 2.617e-05/1.003, allocations: 1.703 kB / 1.349 GB, free: 11 MB / 1.061 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.883e-05/1.003, allocations: 40.58 kB / 1.35 GB, free: 10.95 MB / 1.061 GB Notification: Performance of pre-optimization done (n=12): time 1.824e-06/1.003, allocations: 3.938 kB / 1.35 GB, free: 10.95 MB / 1.061 GB Notification: Performance of matching and sorting (n=12): time 0.0004346/1.004, allocations: 227.8 kB / 1.35 GB, free: 10.84 MB / 1.061 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.726e-05/1.004, allocations: 53.14 kB / 1.35 GB, free: 10.77 MB / 1.061 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007747/1.004, allocations: 0.5671 MB / 1.35 GB, free: 10.54 MB / 1.061 GB Notification: Performance of collectPreVariables (initialization): time 1.353e-05/1.004, allocations: 25.7 kB / 1.35 GB, free: 10.51 MB / 1.061 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002109/1.005, allocations: 365.8 kB / 1.351 GB, free: 10.21 MB / 1.061 GB Notification: Performance of collectInitialBindings (initialization): time 3.865e-05/1.005, allocations: 48.27 kB / 1.351 GB, free: 10.18 MB / 1.061 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000138/1.005, allocations: 81.45 kB / 1.351 GB, free: 10.13 MB / 1.061 GB Notification: Performance of setup shared object (initialization): time 0.0001148/1.005, allocations: 357.6 kB / 1.351 GB, free: 9.797 MB / 1.061 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002048/1.005, allocations: 115.7 kB / 1.351 GB, free: 9.766 MB / 1.061 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003122/1.005, allocations: 312.9 kB / 1.352 GB, free: 9.473 MB / 1.061 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004703/1.006, allocations: 432.2 kB / 1.352 GB, free: 9.113 MB / 1.061 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.739e-06/1.006, allocations: 6.25 kB / 1.352 GB, free: 9.109 MB / 1.061 GB Notification: Performance of matching and sorting (n=45) (initialization): time 0.0007572/1.007, allocations: 467.8 kB / 1.352 GB, free: 8.918 MB / 1.061 GB Notification: Performance of prepare postOptimizeDAE: time 2.479e-05/1.007, allocations: 8.875 kB / 1.352 GB, free: 8.918 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.638e-05/1.007, allocations: 6.625 kB / 1.352 GB, free: 8.918 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.893e-05/1.007, allocations: 13.11 kB / 1.352 GB, free: 8.914 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003037/1.007, allocations: 85.53 kB / 1.353 GB, free: 8.902 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.886e-05/1.007, allocations: 9.984 kB / 1.353 GB, free: 8.902 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002747/1.007, allocations: 57.72 kB / 1.353 GB, free: 8.871 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.501e-05/1.007, allocations: 21.03 kB / 1.353 GB, free: 8.867 MB / 1.061 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 30 * Number of states: 0 () * Number of discrete variables: 6 (opeMod[2].y,opeMod[1].y,zonToAhu.occMod[2].y,zonToAhu.occMod[1].y,zonToAhu.intEqu1[1].y,zonToAhu.intEqu1[2].y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (45): * Single equations (assignments): 45 * 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 0.0002999/1.008, allocations: 253.8 kB / 1.353 GB, free: 8.695 MB / 1.061 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.751e-05/1.008, allocations: 36.17 kB / 1.353 GB, free: 8.676 MB / 1.061 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0003626/1.008, allocations: 203.5 kB / 1.353 GB, free: 8.566 MB / 1.061 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.819e-06/1.008, allocations: 1.719 kB / 1.353 GB, free: 8.566 MB / 1.061 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.759e-05/1.008, allocations: 0.9688 kB / 1.353 GB, free: 8.566 MB / 1.061 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.699e-06/1.008, allocations: 0.75 kB / 1.353 GB, free: 8.566 MB / 1.061 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001259/1.009, allocations: 1.003 MB / 1.354 GB, free: 7.887 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.299e-06/1.009, allocations: 3.406 kB / 1.354 GB, free: 7.887 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 9.841e-05/1.009, allocations: 30.44 kB / 1.354 GB, free: 7.879 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.45e-06/1.009, allocations: 3.812 kB / 1.354 GB, free: 7.879 MB / 1.061 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.539e-05/1.009, allocations: 4.422 kB / 1.354 GB, free: 7.879 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.841e-06/1.009, allocations: 3.594 kB / 1.354 GB, free: 7.879 MB / 1.061 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.083e-06/1.009, allocations: 8.156 kB / 1.354 GB, free: 7.875 MB / 1.061 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0003099/1.01, allocations: 280.9 kB / 1.354 GB, free: 7.645 MB / 1.061 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001202/1.01, allocations: 131.8 kB / 1.355 GB, free: 7.523 MB / 1.061 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.452e-05/1.01, allocations: 5.516 kB / 1.355 GB, free: 7.523 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001234/1.01, allocations: 15.72 kB / 1.355 GB, free: 7.516 MB / 1.061 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 3.914e-05/1.01, allocations: 13.28 kB / 1.355 GB, free: 7.512 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.198e-05/1.01, allocations: 6.281 kB / 1.355 GB, free: 7.512 MB / 1.061 GB Notification: Performance of sorting global known variables: time 0.0005286/1.011, allocations: 405.5 kB / 1.355 GB, free: 7.34 MB / 1.061 GB Notification: Performance of sort global known variables: time 9.1e-08/1.011, allocations: 0 / 1.355 GB, free: 7.34 MB / 1.061 GB Notification: Performance of remove unused functions: time 0.0004599/1.011, allocations: 95.23 kB / 1.355 GB, free: 7.309 MB / 1.061 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 12 * 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 (12): * Single equations (assignments): 12 * 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 0.0006233/1.012, allocations: 0.8255 MB / 1.356 GB, free: 6.543 MB / 1.061 GB Notification: Performance of simCode: created initialization part: time 0.0004908/1.012, allocations: 256.1 kB / 1.356 GB, free: 6.457 MB / 1.061 GB Notification: Performance of simCode: created event and clocks part: time 5.29e-06/1.012, allocations: 0.9688 kB / 1.356 GB, free: 6.457 MB / 1.061 GB Notification: Performance of simCode: created simulation system equations: time 0.0001097/1.012, allocations: 69.75 kB / 1.356 GB, free: 6.43 MB / 1.061 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004334/1.013, allocations: 58 kB / 1.356 GB, free: 6.398 MB / 1.061 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005652/1.018, allocations: 4.413 MB / 1.361 GB, free: 3.641 MB / 1.061 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004673/1.019, allocations: 0.9081 MB / 1.361 GB, free: 2.91 MB / 1.061 GB Notification: Performance of simCode: alias equations: time 0.0003039/1.019, allocations: 102.6 kB / 1.362 GB, free: 2.895 MB / 1.061 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002172/1.019, allocations: 167.5 kB / 1.362 GB, free: 2.766 MB / 1.061 GB Notification: Performance of SimCode: time 8.82e-07/1.019, allocations: 0 / 1.362 GB, free: 2.766 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.02659/1.046, allocations: 7.269 MB / 1.369 GB, free: 1.973 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate platform static: time 9.327/10.37, allocations: 11.08 kB / 1.369 GB, free: 1.969 MB / 1.061 GB " [Timeout remaining time 290] (rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow_res.mat --tempDir=temp_Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_AHUs_MultiZone_VAV_SetPoints_OutdoorAirFlow_Title24_Validation_OutdoorAirFlow_fmu --startTime=0 --stopTime=3600 --stepSize=1.44 --timeout=800 --tolerance=1e-06 Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_AHUs_MultiZone_VAV_SetPoints_OutdoorAirFlow_Title24_Validation_OutdoorAirFlow.fmu > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_AHUs_MultiZone_VAV_SetPoints_OutdoorAirFlow_Title24_Validation_OutdoorAirFlow.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.Validation.OutdoorAirFlow.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: 16.987112263042945]