Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves.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 0.001317/0.001317, allocations: 102.1 kB / 19.7 MB, free: 2.254 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 0.001507/0.001507, allocations: 219.3 kB / 23.01 MB, free: 4.609 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 1.419/1.419, allocations: 230.6 MB / 256.8 MB, free: 8.055 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 3.187/3.187, allocations: 0.505 GB / 0.8108 GB, free: 22.1 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: translateModel(Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|valLin.res1.phi|valLin.res3.phi|valEquPerLin.res1.phi|valEquPerLin.res3.phi|valTab.res1.phi|valTab.res3.phi",fileNamePrefix="Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves") translateModel(Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|valLin.res1.phi|valLin.res3.phi|valEquPerLin.res1.phi|valEquPerLin.res3.phi|valTab.res1.phi|valTab.res3.phi",fileNamePrefix="Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves") [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 0.002065/0.002065, allocations: 68.05 kB / 1.178 GB, free: 16.89 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3383/0.3404, allocations: 180.2 MB / 1.354 GB, free: 8.016 MB / 1.045 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves): time 0.1277/0.468, allocations: 115 MB / 1.466 GB, free: 4.645 MB / 1.154 GB Notification: Performance of NFInst.instExpressions: time 0.03429/0.5023, allocations: 20.27 MB / 1.486 GB, free: 340 kB / 1.17 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.005142/0.5075, allocations: 154.6 kB / 1.486 GB, free: 184 kB / 1.17 GB Notification: Performance of NFTyping.typeComponents: time 0.004607/0.5121, allocations: 1.32 MB / 1.488 GB, free: 14.85 MB / 1.186 GB Notification: Performance of NFTyping.typeBindings: time 0.01258/0.5247, allocations: 3.971 MB / 1.491 GB, free: 10.87 MB / 1.186 GB Notification: Performance of NFTyping.typeClassSections: time 0.008928/0.5336, allocations: 3.221 MB / 1.495 GB, free: 7.684 MB / 1.186 GB Notification: Performance of NFFlatten.flatten: time 0.01256/0.5461, allocations: 7.325 MB / 1.502 GB, free: 344 kB / 1.186 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004075/0.5502, allocations: 1.983 MB / 1.504 GB, free: 14.29 MB / 1.201 GB Notification: Performance of NFEvalConstants.evaluate: time 0.008722/0.5589, allocations: 3.133 MB / 1.507 GB, free: 11.15 MB / 1.201 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004692/0.5636, allocations: 2.174 MB / 1.509 GB, free: 8.965 MB / 1.201 GB Notification: Performance of NFPackage.collectConstants: time 0.000739/0.5644, allocations: 256 kB / 1.509 GB, free: 8.715 MB / 1.201 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004493/0.5689, allocations: 1.747 MB / 1.511 GB, free: 6.965 MB / 1.201 GB Notification: Performance of NFScalarize.scalarize: time 0.0008737/0.5697, allocations: 0.7198 MB / 1.512 GB, free: 6.242 MB / 1.201 GB Notification: Performance of NFVerifyModel.verify: time 0.002318/0.5721, allocations: 1.504 MB / 1.513 GB, free: 4.73 MB / 1.201 GB Notification: Performance of NFConvertDAE.convert: time 0.007308/0.5794, allocations: 4.468 MB / 1.517 GB, free: 252 kB / 1.201 GB Notification: Performance of FrontEnd - DAE generated: time 6.072e-06/0.5794, allocations: 0 / 1.517 GB, free: 252 kB / 1.201 GB Notification: Performance of FrontEnd: time 2.334e-06/0.5794, allocations: 0 / 1.517 GB, free: 252 kB / 1.201 GB Notification: Performance of Transformations before backend: time 7.565e-05/0.5795, allocations: 0 / 1.517 GB, free: 252 kB / 1.201 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 379 * Number of variables: 379 Notification: Performance of Generate backend data structure: time 0.006869/0.5863, allocations: 3.218 MB / 1.521 GB, free: 12.97 MB / 1.217 GB Notification: Performance of prepare preOptimizeDAE: time 5.986e-05/0.5864, allocations: 16.02 kB / 1.521 GB, free: 12.96 MB / 1.217 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001133/0.5875, allocations: 334.3 kB / 1.521 GB, free: 12.63 MB / 1.217 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.005183/0.5927, allocations: 2.138 MB / 1.523 GB, free: 10.41 MB / 1.217 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001094/0.5928, allocations: 127 kB / 1.523 GB, free: 10.29 MB / 1.217 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002483/0.5931, allocations: 164 kB / 1.523 GB, free: 10.13 MB / 1.217 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002959/0.596, allocations: 1.612 MB / 1.525 GB, free: 8.453 MB / 1.217 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.137e-05/0.5961, allocations: 7.891 kB / 1.525 GB, free: 8.445 MB / 1.217 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000133/0.5962, allocations: 71.98 kB / 1.525 GB, free: 8.375 MB / 1.217 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.286e-05/0.5962, allocations: 47.94 kB / 1.525 GB, free: 8.328 MB / 1.217 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002102/0.5983, allocations: 1.143 MB / 1.526 GB, free: 7.18 MB / 1.217 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 0.01249/0.6108, allocations: 8.045 MB / 1.534 GB, free: 14.58 MB / 1.233 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0008512/0.6117, allocations: 449.6 kB / 1.534 GB, free: 14.13 MB / 1.233 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000524/0.6122, allocations: 294.8 kB / 1.535 GB, free: 13.84 MB / 1.233 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003483/0.6126, allocations: 84.42 kB / 1.535 GB, free: 13.75 MB / 1.233 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.608e-05/0.6126, allocations: 39.06 kB / 1.535 GB, free: 13.7 MB / 1.233 GB Notification: Performance of pre-optimization done (n=60): time 5.099e-06/0.6126, allocations: 4 kB / 1.535 GB, free: 13.7 MB / 1.233 GB Notification: Performance of matching and sorting (n=60): time 0.002276/0.6149, allocations: 0.9992 MB / 1.536 GB, free: 12.7 MB / 1.233 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.798e-05/0.6149, allocations: 55.91 kB / 1.536 GB, free: 12.63 MB / 1.233 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003405/0.6184, allocations: 2.314 MB / 1.538 GB, free: 10.31 MB / 1.233 GB Notification: Performance of collectPreVariables (initialization): time 0.0001533/0.6185, allocations: 45.7 kB / 1.538 GB, free: 10.26 MB / 1.233 GB Notification: Performance of collectInitialEqns (initialization): time 0.001155/0.6197, allocations: 1.163 MB / 1.539 GB, free: 9.086 MB / 1.233 GB Notification: Performance of collectInitialBindings (initialization): time 0.000262/0.6199, allocations: 226.1 kB / 1.539 GB, free: 8.863 MB / 1.233 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003872/0.6203, allocations: 258.8 kB / 1.54 GB, free: 8.602 MB / 1.233 GB Notification: Performance of setup shared object (initialization): time 0.0001792/0.6205, allocations: 345.9 kB / 1.54 GB, free: 8.258 MB / 1.233 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006917/0.6212, allocations: 361.9 kB / 1.54 GB, free: 7.902 MB / 1.233 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001096/0.6223, allocations: 0.7502 MB / 1.541 GB, free: 6.996 MB / 1.233 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00157/0.6238, allocations: 0.9744 MB / 1.542 GB, free: 5.906 MB / 1.233 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.575e-06/0.6239, allocations: 7.938 kB / 1.542 GB, free: 5.898 MB / 1.233 GB Notification: Performance of matching and sorting (n=141) (initialization): time 0.002593/0.6264, allocations: 1.308 MB / 1.543 GB, free: 4.586 MB / 1.233 GB Notification: Performance of prepare postOptimizeDAE: time 2.453e-05/0.6265, allocations: 8 kB / 1.543 GB, free: 4.578 MB / 1.233 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.748e-05/0.6265, allocations: 12 kB / 1.543 GB, free: 4.566 MB / 1.233 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.164e-05/0.6265, allocations: 12 kB / 1.543 GB, free: 4.555 MB / 1.233 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001007/0.6275, allocations: 251.6 kB / 1.544 GB, free: 4.309 MB / 1.233 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.847e-05/0.6276, allocations: 23.86 kB / 1.544 GB, free: 4.285 MB / 1.233 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001531/0.6291, allocations: 175.2 kB / 1.544 GB, free: 4.113 MB / 1.233 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.444e-05/0.6292, allocations: 51.98 kB / 1.544 GB, free: 4.062 MB / 1.233 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001492/0.6307, allocations: 0.7563 MB / 1.545 GB, free: 3.301 MB / 1.233 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001028/0.6317, allocations: 0.7387 MB / 1.545 GB, free: 2.398 MB / 1.233 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.00147/0.6332, allocations: 0.9523 MB / 1.546 GB, free: 1.324 MB / 1.233 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.132e-06/0.6332, allocations: 4 kB / 1.546 GB, free: 1.32 MB / 1.233 GB Notification: Performance of matching and sorting (n=141) (initialization_lambda0): time 0.002469/0.6356, allocations: 1.267 MB / 1.547 GB, free: 48 kB / 1.233 GB Notification: Performance of prepare postOptimizeDAE: time 1.964e-05/0.6357, allocations: 8 kB / 1.547 GB, free: 40 kB / 1.233 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.344e-05/0.6357, allocations: 12 kB / 1.547 GB, free: 28 kB / 1.233 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.713e-05/0.6357, allocations: 15.94 kB / 1.547 GB, free: 12 kB / 1.233 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009595/0.6367, allocations: 252.3 kB / 1.548 GB, free: 15.77 MB / 1.248 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.58e-05/0.6367, allocations: 23.92 kB / 1.548 GB, free: 15.74 MB / 1.248 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001522/0.6382, allocations: 123.4 kB / 1.548 GB, free: 15.62 MB / 1.248 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.891e-05/0.6383, allocations: 55.92 kB / 1.548 GB, free: 15.57 MB / 1.248 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 37 * 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 (141): * Single equations (assignments): 141 * 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 0.0003514/0.6386, allocations: 251.8 kB / 1.548 GB, free: 15.31 MB / 1.248 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003923/0.639, allocations: 250.4 kB / 1.548 GB, free: 15.07 MB / 1.248 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00188/0.6409, allocations: 0.8837 MB / 1.549 GB, free: 14.16 MB / 1.248 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.797e-05/0.6409, allocations: 11.98 kB / 1.549 GB, free: 14.15 MB / 1.248 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.412e-06/0.6409, allocations: 4 kB / 1.549 GB, free: 14.15 MB / 1.248 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001103/0.642, allocations: 0.6836 MB / 1.55 GB, free: 13.43 MB / 1.248 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004384/0.6464, allocations: 2.562 MB / 1.552 GB, free: 10.81 MB / 1.248 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.07e-06/0.6464, allocations: 0 / 1.552 GB, free: 10.81 MB / 1.248 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005547/0.647, allocations: 124 kB / 1.553 GB, free: 10.69 MB / 1.248 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.455e-05/0.647, allocations: 7.984 kB / 1.553 GB, free: 10.68 MB / 1.248 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.301e-05/0.647, allocations: 16 kB / 1.553 GB, free: 10.66 MB / 1.248 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 7.364e-06/0.6471, allocations: 3.938 kB / 1.553 GB, free: 10.66 MB / 1.248 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.077e-06/0.6471, allocations: 4 kB / 1.553 GB, free: 10.66 MB / 1.248 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002258/0.6493, allocations: 1.329 MB / 1.554 GB, free: 9.305 MB / 1.248 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008268/0.6501, allocations: 342.2 kB / 1.554 GB, free: 8.969 MB / 1.248 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002287/0.6504, allocations: 16 kB / 1.554 GB, free: 8.953 MB / 1.248 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008704/0.6512, allocations: 51.94 kB / 1.554 GB, free: 8.902 MB / 1.248 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001007/0.6513, allocations: 52.23 kB / 1.554 GB, free: 8.852 MB / 1.248 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.819e-05/0.6514, allocations: 31.97 kB / 1.554 GB, free: 8.82 MB / 1.248 GB Notification: Performance of sorting global known variables: time 0.002386/0.6538, allocations: 1.553 MB / 1.556 GB, free: 7.262 MB / 1.248 GB Notification: Performance of sort global known variables: time 7.1e-08/0.6538, allocations: 0 / 1.556 GB, free: 7.262 MB / 1.248 GB Notification: Performance of remove unused functions: time 0.003056/0.6569, allocations: 1.115 MB / 1.557 GB, free: 6.145 MB / 1.248 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 3 (valLin.vol.dynBal.U,valEquPerLin.vol.dynBal.U,valTab.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 (64): * Single equations (assignments): 61 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * 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 0.002102/0.659, allocations: 0.7309 MB / 1.558 GB, free: 5.543 MB / 1.248 GB Notification: Performance of simCode: created initialization part: time 0.002639/0.6616, allocations: 1.277 MB / 1.559 GB, free: 4.273 MB / 1.248 GB Notification: Performance of simCode: created event and clocks part: time 1.328e-05/0.6616, allocations: 4.625 kB / 1.559 GB, free: 4.27 MB / 1.248 GB Notification: Performance of simCode: created simulation system equations: time 0.0005419/0.6622, allocations: 306.8 kB / 1.559 GB, free: 3.969 MB / 1.248 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005626/0.6678, allocations: 1.383 MB / 1.561 GB, free: 2.629 MB / 1.248 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006447/0.6742, allocations: 3.79 MB / 1.564 GB, free: 14.78 MB / 1.264 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00144/0.6757, allocations: 1.578 MB / 1.566 GB, free: 13.16 MB / 1.264 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005808/0.6763, allocations: 187.3 kB / 1.566 GB, free: 12.98 MB / 1.264 GB Notification: Performance of SimCode: time 9.92e-07/0.6763, allocations: 4 kB / 1.566 GB, free: 12.98 MB / 1.264 GB Notification: Performance of Templates: time 0.06925/0.7455, allocations: 39.93 MB / 1.605 GB, free: 5.312 MB / 1.295 GB " [Timeout remaining time 299] make -j1 -f Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves.makefile [Timeout 300] (rm -f Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves.pipe ; mkfifo Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves.pipe >> ../files/Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves.sim & ./Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves -abortSlowSimulation -alarm=800 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves.pipe 2>&1) [Timeout 800] diffSimulationResults("Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_Actuators_Valves_Examples_ThreeWayValves.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.Actuators.Valves.Examples.ThreeWayValves.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: 20.763937359995907]