Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.Delays.Examples.Delay.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 0.001308/0.001308, allocations: 106.4 kB / 18.94 MB, free: 2.957 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 0.001498/0.001498, allocations: 222.9 kB / 22.26 MB, free: 5.125 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 1.473/1.473, allocations: 230.6 MB / 256 MB, free: 8.004 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 3.278/3.278, allocations: 0.505 GB / 0.8101 GB, free: 22.07 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.Fluid.Delays.Examples.Delay,fileNamePrefix="Buildings_latest_Buildings_Fluid_Delays_Examples_Delay",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Delays.Examples.Delay,fileNamePrefix="Buildings_latest_Buildings_Fluid_Delays_Examples_Delay",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 0.002771/0.002771, allocations: 64.53 kB / 1.177 GB, free: 17.16 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4039/0.4067, allocations: 180.2 MB / 1.353 GB, free: 8.492 MB / 1.045 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Delays.Examples.Delay): time 0.2239/0.6306, allocations: 187.2 MB / 1.536 GB, free: 12.64 MB / 1.232 GB Notification: Performance of NFInst.instExpressions: time 0.008406/0.639, allocations: 4.916 MB / 1.54 GB, free: 7.711 MB / 1.232 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0009289/0.6399, allocations: 47.62 kB / 1.54 GB, free: 7.664 MB / 1.232 GB Notification: Performance of NFTyping.typeComponents: time 0.001212/0.6411, allocations: 449.3 kB / 1.541 GB, free: 7.223 MB / 1.232 GB Notification: Performance of NFTyping.typeBindings: time 0.003595/0.6447, allocations: 1.492 MB / 1.542 GB, free: 5.727 MB / 1.232 GB Notification: Performance of NFTyping.typeClassSections: time 0.002164/0.6469, allocations: 0.8136 MB / 1.543 GB, free: 4.918 MB / 1.232 GB Notification: Performance of NFFlatten.flatten: time 0.00275/0.6496, allocations: 1.905 MB / 1.545 GB, free: 3.012 MB / 1.232 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0008375/0.6505, allocations: 472.9 kB / 1.545 GB, free: 2.539 MB / 1.232 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002471/0.6529, allocations: 1.137 MB / 1.547 GB, free: 1.398 MB / 1.232 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001317/0.6543, allocations: 0.5665 MB / 1.547 GB, free: 0.832 MB / 1.232 GB Notification: Performance of NFPackage.collectConstants: time 0.0001307/0.6544, allocations: 56 kB / 1.547 GB, free: 0.7773 MB / 1.232 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002825/0.6572, allocations: 1.493 MB / 1.549 GB, free: 15.28 MB / 1.248 GB Notification: Performance of NFScalarize.scalarize: time 0.0003374/0.6576, allocations: 275.1 kB / 1.549 GB, free: 15.01 MB / 1.248 GB Notification: Performance of NFVerifyModel.verify: time 0.0005109/0.6581, allocations: 398.1 kB / 1.549 GB, free: 14.62 MB / 1.248 GB Notification: Performance of NFConvertDAE.convert: time 0.002681/0.6607, allocations: 1.429 MB / 1.551 GB, free: 13.19 MB / 1.248 GB Notification: Performance of FrontEnd - DAE generated: time 4.769e-06/0.6608, allocations: 0 / 1.551 GB, free: 13.19 MB / 1.248 GB Notification: Performance of FrontEnd: time 4.468e-06/0.6608, allocations: 4 kB / 1.551 GB, free: 13.18 MB / 1.248 GB Notification: Performance of Transformations before backend: time 1.642e-05/0.6608, allocations: 4 kB / 1.551 GB, free: 13.18 MB / 1.248 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 113 * Number of variables: 113 Notification: Performance of Generate backend data structure: time 0.002055/0.6628, allocations: 1.048 MB / 1.552 GB, free: 12.09 MB / 1.248 GB Notification: Performance of prepare preOptimizeDAE: time 4.972e-05/0.6629, allocations: 12.03 kB / 1.552 GB, free: 12.08 MB / 1.248 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.000111/0.663, allocations: 82.53 kB / 1.552 GB, free: 11.99 MB / 1.248 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001334/0.6643, allocations: 223.2 kB / 1.552 GB, free: 11.77 MB / 1.248 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001172/0.6655, allocations: 0.5524 MB / 1.553 GB, free: 11.19 MB / 1.248 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.279e-05/0.6655, allocations: 33 kB / 1.553 GB, free: 11.16 MB / 1.248 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.286e-05/0.6656, allocations: 55.94 kB / 1.553 GB, free: 11.11 MB / 1.248 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009061/0.6665, allocations: 498.3 kB / 1.553 GB, free: 10.62 MB / 1.248 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.038e-05/0.6666, allocations: 4 kB / 1.553 GB, free: 10.61 MB / 1.248 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.652e-05/0.6666, allocations: 20 kB / 1.553 GB, free: 10.59 MB / 1.248 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.017e-05/0.6666, allocations: 20.94 kB / 1.553 GB, free: 10.57 MB / 1.248 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008164/0.6675, allocations: 439.7 kB / 1.554 GB, free: 10.14 MB / 1.248 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 0.003123/0.6706, allocations: 2.041 MB / 1.556 GB, free: 7.906 MB / 1.248 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0006544/0.6712, allocations: 345.9 kB / 1.556 GB, free: 7.562 MB / 1.248 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003478/0.6716, allocations: 190.3 kB / 1.556 GB, free: 7.375 MB / 1.248 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002309/0.6718, allocations: 48.19 kB / 1.556 GB, free: 7.328 MB / 1.248 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.495e-05/0.6718, allocations: 38.84 kB / 1.556 GB, free: 7.281 MB / 1.248 GB Notification: Performance of pre-optimization done (n=33): time 1.663e-06/0.6718, allocations: 0 / 1.556 GB, free: 7.281 MB / 1.248 GB Notification: Performance of matching and sorting (n=33): time 0.001281/0.6731, allocations: 0.546 MB / 1.557 GB, free: 6.73 MB / 1.248 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.501e-05/0.6732, allocations: 63.28 kB / 1.557 GB, free: 6.656 MB / 1.248 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006263/0.6738, allocations: 0.5108 MB / 1.557 GB, free: 6.133 MB / 1.248 GB Notification: Performance of collectPreVariables (initialization): time 4.85e-05/0.6738, allocations: 37.7 kB / 1.557 GB, free: 6.09 MB / 1.248 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002677/0.6741, allocations: 308.6 kB / 1.558 GB, free: 5.785 MB / 1.248 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001252/0.6742, allocations: 122.9 kB / 1.558 GB, free: 5.664 MB / 1.248 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001172/0.6744, allocations: 66.03 kB / 1.558 GB, free: 5.594 MB / 1.248 GB Notification: Performance of setup shared object (initialization): time 0.0001829/0.6745, allocations: 374.8 kB / 1.558 GB, free: 5.219 MB / 1.248 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002873/0.6748, allocations: 138.1 kB / 1.558 GB, free: 5.082 MB / 1.248 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003593/0.6752, allocations: 219.6 kB / 1.558 GB, free: 4.844 MB / 1.248 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0005978/0.6758, allocations: 335.7 kB / 1.559 GB, free: 4.504 MB / 1.248 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.24e-06/0.6758, allocations: 3.984 kB / 1.559 GB, free: 4.5 MB / 1.248 GB Notification: Performance of matching and sorting (n=39) (initialization): time 0.0007738/0.6766, allocations: 432.8 kB / 1.559 GB, free: 4.07 MB / 1.248 GB Notification: Performance of prepare postOptimizeDAE: time 2.066e-05/0.6766, allocations: 8.031 kB / 1.559 GB, free: 4.062 MB / 1.248 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.957e-06/0.6766, allocations: 3.984 kB / 1.559 GB, free: 4.059 MB / 1.248 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.366e-05/0.6766, allocations: 4 kB / 1.559 GB, free: 4.055 MB / 1.248 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003504/0.677, allocations: 83.89 kB / 1.559 GB, free: 3.973 MB / 1.248 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.254e-06/0.677, allocations: 0 / 1.559 GB, free: 3.973 MB / 1.248 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004416/0.6774, allocations: 39.77 kB / 1.559 GB, free: 3.934 MB / 1.248 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.21e-05/0.6774, allocations: 12 kB / 1.559 GB, free: 3.922 MB / 1.248 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0004938/0.6779, allocations: 315.9 kB / 1.56 GB, free: 3.609 MB / 1.248 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003302/0.6783, allocations: 202.8 kB / 1.56 GB, free: 3.387 MB / 1.248 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.000567/0.6788, allocations: 339.3 kB / 1.56 GB, free: 3.043 MB / 1.248 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.223e-06/0.6788, allocations: 0 / 1.56 GB, free: 3.043 MB / 1.248 GB Notification: Performance of matching and sorting (n=39) (initialization_lambda0): time 0.0007302/0.6796, allocations: 424.9 kB / 1.561 GB, free: 2.621 MB / 1.248 GB Notification: Performance of prepare postOptimizeDAE: time 1.07e-05/0.6796, allocations: 8 kB / 1.561 GB, free: 2.613 MB / 1.248 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.887e-06/0.6796, allocations: 3.984 kB / 1.561 GB, free: 2.609 MB / 1.248 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.216e-06/0.6796, allocations: 96 / 1.561 GB, free: 2.609 MB / 1.248 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003157/0.6799, allocations: 71.91 kB / 1.561 GB, free: 2.539 MB / 1.248 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.163e-06/0.6799, allocations: 7.938 kB / 1.561 GB, free: 2.531 MB / 1.248 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004182/0.6803, allocations: 35.83 kB / 1.561 GB, free: 2.496 MB / 1.248 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.749e-05/0.6804, allocations: 11.98 kB / 1.561 GB, free: 2.484 MB / 1.248 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 4 * 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 (39): * Single equations (assignments): 39 * 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 0.0001588/0.6805, allocations: 201.5 kB / 1.561 GB, free: 2.281 MB / 1.248 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001065/0.6806, allocations: 59.62 kB / 1.561 GB, free: 2.223 MB / 1.248 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0008258/0.6814, allocations: 419.1 kB / 1.561 GB, free: 1.809 MB / 1.248 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.466e-06/0.6815, allocations: 7.938 kB / 1.561 GB, free: 1.801 MB / 1.248 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.189e-06/0.6815, allocations: 0 / 1.561 GB, free: 1.801 MB / 1.248 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0007201/0.6822, allocations: 437.6 kB / 1.562 GB, free: 1.344 MB / 1.248 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00218/0.6844, allocations: 1.147 MB / 1.563 GB, free: 132 kB / 1.248 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.638e-06/0.6844, allocations: 3.938 kB / 1.563 GB, free: 128 kB / 1.248 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004469/0.6848, allocations: 83.89 kB / 1.563 GB, free: 44 kB / 1.248 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.095e-05/0.6848, allocations: 4.188 kB / 1.563 GB, free: 40 kB / 1.248 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.268e-05/0.6849, allocations: 15.98 kB / 1.563 GB, free: 24 kB / 1.248 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 7.534e-06/0.6849, allocations: 4 kB / 1.563 GB, free: 20 kB / 1.248 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.645e-06/0.6849, allocations: 0 / 1.563 GB, free: 20 kB / 1.248 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001247/0.6861, allocations: 0.7151 MB / 1.564 GB, free: 15.27 MB / 1.264 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002984/0.6864, allocations: 99.52 kB / 1.564 GB, free: 15.17 MB / 1.264 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.318e-05/0.6865, allocations: 8 kB / 1.564 GB, free: 15.16 MB / 1.264 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004401/0.6869, allocations: 27.97 kB / 1.564 GB, free: 15.14 MB / 1.264 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.772e-05/0.687, allocations: 27.95 kB / 1.564 GB, free: 15.11 MB / 1.264 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.231e-05/0.687, allocations: 15.94 kB / 1.564 GB, free: 15.09 MB / 1.264 GB Notification: Performance of sorting global known variables: time 0.0004769/0.6875, allocations: 366.8 kB / 1.564 GB, free: 14.74 MB / 1.264 GB Notification: Performance of sort global known variables: time 8e-08/0.6875, allocations: 0 / 1.564 GB, free: 14.74 MB / 1.264 GB Notification: Performance of remove unused functions: time 0.0008876/0.6884, allocations: 327.3 kB / 1.565 GB, free: 14.42 MB / 1.264 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 7 * Number of states: 3 (del.dynBal.medium.Xi[1],del.dynBal.U,del.dynBal.m) * 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 (33): * Single equations (assignments): 33 * 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 0.001705/0.6901, allocations: 1.322 MB / 1.566 GB, free: 13.05 MB / 1.264 GB Notification: Performance of simCode: created initialization part: time 0.001038/0.6911, allocations: 0.4956 MB / 1.566 GB, free: 12.55 MB / 1.264 GB Notification: Performance of simCode: created event and clocks part: time 7.014e-06/0.6911, allocations: 4 kB / 1.566 GB, free: 12.55 MB / 1.264 GB Notification: Performance of simCode: created simulation system equations: time 0.0003133/0.6915, allocations: 167.8 kB / 1.566 GB, free: 12.39 MB / 1.264 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001604/0.6931, allocations: 356.3 kB / 1.567 GB, free: 12.04 MB / 1.264 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006751/0.6998, allocations: 4.671 MB / 1.571 GB, free: 7.219 MB / 1.264 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005992/0.7004, allocations: 0.9334 MB / 1.572 GB, free: 6.254 MB / 1.264 GB Notification: Performance of simCode: alias equations: time 0.0005905/0.701, allocations: 180.8 kB / 1.572 GB, free: 6.078 MB / 1.264 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000324/0.7013, allocations: 219.4 kB / 1.573 GB, free: 5.867 MB / 1.264 GB Notification: Performance of SimCode: time 7.51e-07/0.7013, allocations: 0 / 1.573 GB, free: 5.867 MB / 1.264 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.04932/0.7507, allocations: 17.27 MB / 1.59 GB, free: 4.871 MB / 1.279 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.93/12.68, allocations: 6.672 kB / 1.59 GB, free: 4.867 MB / 1.279 GB " [Timeout remaining time 287] (rm -f Buildings_latest_Buildings.Fluid.Delays.Examples.Delay.pipe ; mkfifo Buildings_latest_Buildings.Fluid.Delays.Examples.Delay.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.Delays.Examples.Delay.pipe >> ../files/Buildings_latest_Buildings.Fluid.Delays.Examples.Delay.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_latest_Buildings.Fluid.Delays.Examples.Delay_res.mat --tempDir=temp_Buildings_latest_Buildings_Fluid_Delays_Examples_Delay_fmu --startTime=0 --stopTime=300 --stepSize=0.12 --timeout=800 --tolerance=1e-06 Buildings_latest_Buildings_Fluid_Delays_Examples_Delay.fmu > Buildings_latest_Buildings.Fluid.Delays.Examples.Delay.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Fluid.Delays.Examples.Delay_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_Delays_Examples_Delay.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.Delays.Examples.Delay.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: 19.560587587067857]