Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance.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 0.001564/0.001564, allocations: 99.75 kB / 18.95 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 0.001859/0.001859, allocations: 218.1 kB / 22.25 MB, free: 5.102 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 1.39/1.39, allocations: 230.6 MB / 256 MB, free: 7.805 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 3.003/3.003, allocations: 0.49 GB / 0.7951 GB, free: 35.46 MB / 0.6231 GB " [Timeout remaining time 177] 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: "" <> buildModelFMU(Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance,fileNamePrefix="Buildings_12_Buildings_ThermalZones_Detailed_BaseClasses_Examples_MixedAirHeatMassBalance",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance,fileNamePrefix="Buildings_12_Buildings_ThermalZones_Detailed_BaseClasses_Examples_MixedAirHeatMassBalance",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 0.003066/0.003066, allocations: 68.05 kB / 1.154 GB, free: 25.45 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3492/0.3523, allocations: 176.1 MB / 1.326 GB, free: 1.477 MB / 1.014 GB Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance): time 0.1856/0.5379, allocations: 158 MB / 1.48 GB, free: 2.914 MB / 1.17 GB Notification: Performance of NFInst.instExpressions: time 0.01623/0.5541, allocations: 10.15 MB / 1.49 GB, free: 8.738 MB / 1.186 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002828/0.557, allocations: 127 kB / 1.49 GB, free: 8.613 MB / 1.186 GB Notification: Performance of NFTyping.typeComponents: time 0.005549/0.5625, allocations: 1.884 MB / 1.492 GB, free: 6.719 MB / 1.186 GB Notification: Performance of NFTyping.typeBindings: time 0.004919/0.5674, allocations: 1.69 MB / 1.494 GB, free: 5.02 MB / 1.186 GB Notification: Performance of NFTyping.typeClassSections: time 0.00245/0.5699, allocations: 0.8098 MB / 1.495 GB, free: 4.215 MB / 1.186 GB Notification: Performance of NFFlatten.flatten: time 0.004694/0.5746, allocations: 3.187 MB / 1.498 GB, free: 1.02 MB / 1.186 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001557/0.5761, allocations: 0.9651 MB / 1.499 GB, free: 24 kB / 1.186 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00242/0.5786, allocations: 1.346 MB / 1.5 GB, free: 14.67 MB / 1.201 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002323/0.5809, allocations: 1.131 MB / 1.501 GB, free: 13.54 MB / 1.201 GB Notification: Performance of NFPackage.collectConstants: time 0.000324/0.5812, allocations: 128 kB / 1.501 GB, free: 13.41 MB / 1.201 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001814/0.583, allocations: 0.7795 MB / 1.502 GB, free: 12.63 MB / 1.201 GB Notification: Performance of NFScalarize.scalarize: time 0.0005395/0.5836, allocations: 497.8 kB / 1.502 GB, free: 12.14 MB / 1.201 GB Notification: Performance of NFVerifyModel.verify: time 0.001072/0.5846, allocations: 0.8196 MB / 1.503 GB, free: 11.32 MB / 1.201 GB Notification: Performance of NFConvertDAE.convert: time 0.00452/0.5892, allocations: 3.498 MB / 1.507 GB, free: 7.809 MB / 1.201 GB Notification: Performance of FrontEnd - DAE generated: time 5.44e-06/0.5892, allocations: 0 / 1.507 GB, free: 7.809 MB / 1.201 GB Notification: Performance of FrontEnd: time 1.734e-06/0.5892, allocations: 3.938 kB / 1.507 GB, free: 7.805 MB / 1.201 GB Notification: Performance of Transformations before backend: time 5.069e-05/0.5892, allocations: 0 / 1.507 GB, free: 7.805 MB / 1.201 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 191 * Number of variables: 191 Notification: Performance of Generate backend data structure: time 0.00444/0.5937, allocations: 2.826 MB / 1.509 GB, free: 4.93 MB / 1.201 GB Notification: Performance of prepare preOptimizeDAE: time 4.73e-05/0.5937, allocations: 11.97 kB / 1.509 GB, free: 4.918 MB / 1.201 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001561/0.5939, allocations: 126.7 kB / 1.509 GB, free: 4.785 MB / 1.201 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001436/0.5953, allocations: 390 kB / 1.51 GB, free: 4.402 MB / 1.201 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003587/0.5989, allocations: 1.951 MB / 1.512 GB, free: 2.395 MB / 1.201 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.366e-05/0.5989, allocations: 54 kB / 1.512 GB, free: 2.34 MB / 1.201 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000122/0.5991, allocations: 79.98 kB / 1.512 GB, free: 2.262 MB / 1.201 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00149/0.6005, allocations: 1.045 MB / 1.513 GB, free: 1.148 MB / 1.201 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.452e-05/0.6006, allocations: 0 / 1.513 GB, free: 1.148 MB / 1.201 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.762e-05/0.6006, allocations: 35.94 kB / 1.513 GB, free: 1.113 MB / 1.201 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.205e-05/0.6007, allocations: 28.94 kB / 1.513 GB, free: 1.086 MB / 1.201 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001069/0.6017, allocations: 0.6869 MB / 1.514 GB, free: 408 kB / 1.201 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 0.005764/0.6075, allocations: 3.661 MB / 1.517 GB, free: 12.65 MB / 1.217 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0004962/0.608, allocations: 302.6 kB / 1.517 GB, free: 12.34 MB / 1.217 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002512/0.6083, allocations: 178.8 kB / 1.518 GB, free: 12.17 MB / 1.217 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001398/0.6084, allocations: 16 kB / 1.518 GB, free: 12.15 MB / 1.217 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.636e-05/0.6084, allocations: 42.55 kB / 1.518 GB, free: 12.1 MB / 1.217 GB Notification: Performance of pre-optimization done (n=30): time 4.258e-06/0.6084, allocations: 4 kB / 1.518 GB, free: 12.1 MB / 1.217 GB Notification: Performance of matching and sorting (n=32): time 0.003012/0.6115, allocations: 1.593 MB / 1.519 GB, free: 10.46 MB / 1.217 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.548e-05/0.6115, allocations: 59.34 kB / 1.519 GB, free: 10.39 MB / 1.217 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003832/0.6153, allocations: 2.961 MB / 1.522 GB, free: 7.414 MB / 1.217 GB Notification: Performance of collectPreVariables (initialization): time 5.261e-05/0.6154, allocations: 33.7 kB / 1.522 GB, free: 7.375 MB / 1.217 GB Notification: Performance of collectInitialEqns (initialization): time 0.001004/0.6164, allocations: 1.067 MB / 1.523 GB, free: 6.301 MB / 1.217 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001312/0.6165, allocations: 119 kB / 1.523 GB, free: 6.184 MB / 1.217 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001696/0.6167, allocations: 114.2 kB / 1.524 GB, free: 6.062 MB / 1.217 GB Notification: Performance of setup shared object (initialization): time 0.0001386/0.6168, allocations: 326 kB / 1.524 GB, free: 5.738 MB / 1.217 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002467/0.6171, allocations: 161.1 kB / 1.524 GB, free: 5.582 MB / 1.217 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004443/0.6175, allocations: 447.7 kB / 1.524 GB, free: 5.043 MB / 1.217 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: air.vol.dynBal.medium.p = air.vol.dynBal.p_start (boundary.p = air.vol.dynBal.p_start) Notification: Performance of analyzeInitialSystem (initialization): time 0.002039/0.6196, allocations: 0.9989 MB / 1.525 GB, free: 3.957 MB / 1.217 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.166e-05/0.6196, allocations: 8 kB / 1.525 GB, free: 3.949 MB / 1.217 GB Notification: Performance of matching and sorting (n=62) (initialization): time 0.001304/0.6209, allocations: 0.8058 MB / 1.526 GB, free: 3.133 MB / 1.217 GB Notification: Performance of prepare postOptimizeDAE: time 2.193e-05/0.6209, allocations: 9.562 kB / 1.526 GB, free: 3.125 MB / 1.217 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.141e-05/0.6209, allocations: 8 kB / 1.526 GB, free: 3.117 MB / 1.217 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001949/0.6211, allocations: 56.83 kB / 1.526 GB, free: 3.059 MB / 1.217 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003452/0.6214, allocations: 107.8 kB / 1.526 GB, free: 2.953 MB / 1.217 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001646/0.6231, allocations: 1.758 MB / 1.528 GB, free: 1.086 MB / 1.217 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008838/0.624, allocations: 31.88 kB / 1.528 GB, free: 1.055 MB / 1.217 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.256e-05/0.624, allocations: 24 kB / 1.528 GB, free: 1.031 MB / 1.217 GB Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization system: air.vol.dynBal.medium.p = air.vol.dynBal.p_start. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 28 * 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 (58): * Single equations (assignments): 57 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * 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 {(1,4,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.001121/0.6251, allocations: 0.7949 MB / 1.529 GB, free: 232 kB / 1.217 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003235/0.6255, allocations: 250.5 kB / 1.529 GB, free: 15.98 MB / 1.232 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0003737/0.6258, allocations: 251.7 kB / 1.529 GB, free: 15.73 MB / 1.232 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.829e-06/0.6258, allocations: 8.062 kB / 1.529 GB, free: 15.72 MB / 1.232 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.232e-06/0.6258, allocations: 0 / 1.529 GB, free: 15.72 MB / 1.232 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0006924/0.6265, allocations: 0.5968 MB / 1.53 GB, free: 15.05 MB / 1.232 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003034/0.6296, allocations: 1.873 MB / 1.532 GB, free: 13.08 MB / 1.232 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.072e-06/0.6296, allocations: 4 kB / 1.532 GB, free: 13.08 MB / 1.232 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002959/0.6299, allocations: 71.97 kB / 1.532 GB, free: 13.01 MB / 1.232 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001501/0.63, allocations: 56.83 kB / 1.532 GB, free: 12.95 MB / 1.232 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.359e-05/0.63, allocations: 8 kB / 1.532 GB, free: 12.94 MB / 1.232 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00155/0.6316, allocations: 1.766 MB / 1.534 GB, free: 11.06 MB / 1.232 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.552e-06/0.6316, allocations: 4 kB / 1.534 GB, free: 11.05 MB / 1.232 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001215/0.6328, allocations: 0.9357 MB / 1.535 GB, free: 10.06 MB / 1.232 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008027/0.6336, allocations: 343.5 kB / 1.535 GB, free: 9.719 MB / 1.232 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001888/0.6338, allocations: 11.98 kB / 1.535 GB, free: 9.707 MB / 1.232 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005429/0.6344, allocations: 24.7 kB / 1.535 GB, free: 9.684 MB / 1.232 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.496e-05/0.6344, allocations: 31.89 kB / 1.535 GB, free: 9.652 MB / 1.232 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.608e-05/0.6344, allocations: 20.11 kB / 1.535 GB, free: 9.633 MB / 1.232 GB Notification: Performance of sorting global known variables: time 0.002897/0.6373, allocations: 2.083 MB / 1.537 GB, free: 7.547 MB / 1.232 GB Notification: Performance of sort global known variables: time 1.11e-07/0.6373, allocations: 4 kB / 1.537 GB, free: 7.543 MB / 1.232 GB Notification: Performance of remove unused functions: time 0.001043/0.6384, allocations: 296 kB / 1.537 GB, free: 7.254 MB / 1.232 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 14 * Number of states: 2 (air.vol.dynBal.medium.Xi[1],air.vol.dynBal.U) * 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 (29): * Single equations (assignments): 28 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * 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 {(1,4,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0017/0.6401, allocations: 1.538 MB / 1.539 GB, free: 5.645 MB / 1.232 GB Notification: Performance of simCode: created initialization part: time 0.0009049/0.641, allocations: 0.5074 MB / 1.539 GB, free: 5.125 MB / 1.232 GB Notification: Performance of simCode: created event and clocks part: time 3.777e-06/0.641, allocations: 0 / 1.539 GB, free: 5.125 MB / 1.232 GB Notification: Performance of simCode: created simulation system equations: time 0.0003872/0.6414, allocations: 303.1 kB / 1.54 GB, free: 4.816 MB / 1.232 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003416/0.6448, allocations: 0.9464 MB / 1.541 GB, free: 3.895 MB / 1.232 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02427/0.6691, allocations: 17.13 MB / 1.557 GB, free: 2.344 MB / 1.248 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001489/0.6706, allocations: 1.388 MB / 1.559 GB, free: 0.9102 MB / 1.248 GB Notification: Performance of simCode: alias equations: time 0.001107/0.6717, allocations: 346.8 kB / 1.559 GB, free: 0.5664 MB / 1.248 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009776/0.6726, allocations: 0.8 MB / 1.56 GB, free: 15.76 MB / 1.264 GB Notification: Performance of SimCode: time 8.32e-07/0.6726, allocations: 0 / 1.56 GB, free: 15.76 MB / 1.264 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.7095/1.382, allocations: 55.77 MB / 1.614 GB, free: 276.1 MB / 1.295 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.12/14.51, allocations: 12.72 kB / 1.614 GB, free: 276.1 MB / 1.295 GB " [Timeout remaining time 285] (rm -f Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance.pipe ; mkfifo Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance.pipe ; head -c 1048576 < Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance.pipe >> ../files/Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance.sim & python3 -m fmpy simulate --output-file Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance_res.csv --start-time 0 --stop-time 3600 --timeout 400 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 1.44 Buildings_12_Buildings_ThermalZones_Detailed_BaseClasses_Examples_MixedAirHeatMassBalance.fmu > Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance.pipe 2>&1) [Timeout 420.0] diffSimulationResults("Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance_res.csv","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_ThermalZones_Detailed_BaseClasses_Examples_MixedAirHeatMassBalance.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "Error: Could not read variable air.vol.T in file Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance_res.csv. Warning: Get data of variable air.vol.T from file Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance_res.csv failed! Error: Could not read variable air.vol.Xi[1] in file Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance_res.csv. Warning: Get data of variable air.vol.Xi[1] from file Buildings_12_Buildings.ThermalZones.Detailed.BaseClasses.Examples.MixedAirHeatMassBalance_res.csv failed! " [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 20.951417756004957]