Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil.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 0.001547/0.001547, allocations: 102.5 kB / 16.45 MB, free: 6.504 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 0.0016/0.0016, allocations: 212.9 kB / 19.43 MB, free: 3.652 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 1.57/1.57, allocations: 230.6 MB / 252.8 MB, free: 8.957 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 3.412/3.412, allocations: 0.505 GB / 0.8066 GB, free: 23.02 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.HeatExchangers.BaseClasses.Examples.HADryCoil,fileNamePrefix="Buildings_latest_Buildings_Fluid_HeatExchangers_BaseClasses_Examples_HADryCoil",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil,fileNamePrefix="Buildings_latest_Buildings_Fluid_HeatExchangers_BaseClasses_Examples_HADryCoil",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 0.002144/0.002144, allocations: 71.75 kB / 1.172 GB, free: 17.42 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3607/0.3629, allocations: 180.2 MB / 1.348 GB, free: 9.895 MB / 1.045 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil): time 0.004382/0.3672, allocations: 2.17 MB / 1.35 GB, free: 7.715 MB / 1.045 GB Notification: Performance of NFInst.instExpressions: time 0.002285/0.3695, allocations: 1.095 MB / 1.351 GB, free: 6.617 MB / 1.045 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000224/0.3698, allocations: 11.94 kB / 1.351 GB, free: 6.605 MB / 1.045 GB Notification: Performance of NFTyping.typeComponents: time 8.643e-05/0.3698, allocations: 23.67 kB / 1.351 GB, free: 6.582 MB / 1.045 GB Notification: Performance of NFTyping.typeBindings: time 0.0003873/0.3702, allocations: 79.28 kB / 1.351 GB, free: 6.504 MB / 1.045 GB Notification: Performance of NFTyping.typeClassSections: time 0.0005394/0.3708, allocations: 198.5 kB / 1.351 GB, free: 6.312 MB / 1.045 GB Notification: Performance of NFFlatten.flatten: time 0.0003671/0.3711, allocations: 294.8 kB / 1.352 GB, free: 6.023 MB / 1.045 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0001799/0.3713, allocations: 52.92 kB / 1.352 GB, free: 5.965 MB / 1.045 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0001513/0.3715, allocations: 107.6 kB / 1.352 GB, free: 5.859 MB / 1.045 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0002453/0.3717, allocations: 139.3 kB / 1.352 GB, free: 5.723 MB / 1.045 GB Notification: Performance of NFPackage.collectConstants: time 3.646e-05/0.3717, allocations: 20 kB / 1.352 GB, free: 5.703 MB / 1.045 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0004471/0.3722, allocations: 295.7 kB / 1.352 GB, free: 5.414 MB / 1.045 GB Notification: Performance of NFScalarize.scalarize: time 5.418e-05/0.3722, allocations: 55.77 kB / 1.352 GB, free: 5.359 MB / 1.045 GB Notification: Performance of NFVerifyModel.verify: time 0.0001192/0.3724, allocations: 123.3 kB / 1.352 GB, free: 5.238 MB / 1.045 GB Notification: Performance of NFConvertDAE.convert: time 0.0004571/0.3728, allocations: 326.5 kB / 1.353 GB, free: 4.918 MB / 1.045 GB Notification: Performance of FrontEnd - DAE generated: time 5.3e-06/0.3728, allocations: 0 / 1.353 GB, free: 4.918 MB / 1.045 GB Notification: Performance of FrontEnd: time 1.643e-06/0.3728, allocations: 0 / 1.353 GB, free: 4.918 MB / 1.045 GB Notification: Performance of Transformations before backend: time 6.632e-06/0.3728, allocations: 0 / 1.353 GB, free: 4.918 MB / 1.045 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 34 * Number of variables: 34 Notification: Performance of Generate backend data structure: time 0.001179/0.374, allocations: 0.6439 MB / 1.353 GB, free: 4.223 MB / 1.045 GB Notification: Performance of prepare preOptimizeDAE: time 4.41e-05/0.3741, allocations: 11.98 kB / 1.353 GB, free: 4.211 MB / 1.045 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.454e-05/0.3741, allocations: 50.67 kB / 1.353 GB, free: 4.152 MB / 1.045 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002147/0.3743, allocations: 36.75 kB / 1.353 GB, free: 4.117 MB / 1.045 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004417/0.3748, allocations: 291.7 kB / 1.354 GB, free: 3.793 MB / 1.045 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.689e-05/0.3748, allocations: 12.41 kB / 1.354 GB, free: 3.781 MB / 1.045 GB Notification: Performance of preOpt expandDerOperator (simulation): time 3.042e-05/0.3748, allocations: 16 kB / 1.354 GB, free: 3.766 MB / 1.045 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0005676/0.3754, allocations: 236.6 kB / 1.354 GB, free: 3.512 MB / 1.045 GB Notification: Performance of preOpt findStateOrder (simulation): time 9.187e-06/0.3754, allocations: 0 / 1.354 GB, free: 3.512 MB / 1.045 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.935e-05/0.3754, allocations: 4 kB / 1.354 GB, free: 3.508 MB / 1.045 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.735e-06/0.3754, allocations: 4 kB / 1.354 GB, free: 3.504 MB / 1.045 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006967/0.3761, allocations: 195.8 kB / 1.354 GB, free: 3.312 MB / 1.045 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001255/0.3774, allocations: 0.9423 MB / 1.355 GB, free: 2.301 MB / 1.045 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0008148/0.3782, allocations: 233.4 kB / 1.355 GB, free: 2.055 MB / 1.045 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003579/0.3785, allocations: 105.7 kB / 1.355 GB, free: 1.945 MB / 1.045 GB Notification: Performance of preOpt evalFunc (simulation): time 2.972e-05/0.3786, allocations: 4 kB / 1.355 GB, free: 1.941 MB / 1.045 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.259e-05/0.3786, allocations: 34.56 kB / 1.355 GB, free: 1.898 MB / 1.045 GB Notification: Performance of pre-optimization done (n=16): time 1.323e-06/0.3786, allocations: 0 / 1.355 GB, free: 1.898 MB / 1.045 GB Notification: Performance of matching and sorting (n=16): time 0.001257/0.3799, allocations: 341.2 kB / 1.356 GB, free: 1.559 MB / 1.045 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.204e-05/0.3799, allocations: 81.11 kB / 1.356 GB, free: 1.461 MB / 1.045 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003031/0.3802, allocations: 267 kB / 1.356 GB, free: 1.191 MB / 1.045 GB Notification: Performance of collectPreVariables (initialization): time 3.775e-05/0.3803, allocations: 33.64 kB / 1.356 GB, free: 1.152 MB / 1.045 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001304/0.3804, allocations: 160.3 kB / 1.356 GB, free: 0.9922 MB / 1.045 GB Notification: Performance of collectInitialBindings (initialization): time 5.316e-05/0.3805, allocations: 55.53 kB / 1.356 GB, free: 0.9375 MB / 1.045 GB Notification: Performance of simplifyInitialFunctions (initialization): time 7.577e-05/0.3805, allocations: 37.7 kB / 1.356 GB, free: 0.8945 MB / 1.045 GB Notification: Performance of setup shared object (initialization): time 0.0001565/0.3807, allocations: 342.8 kB / 1.357 GB, free: 0.5508 MB / 1.045 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003485/0.381, allocations: 91.91 kB / 1.357 GB, free: 472 kB / 1.045 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003763/0.3814, allocations: 138.9 kB / 1.357 GB, free: 312 kB / 1.045 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007116/0.3821, allocations: 241.7 kB / 1.357 GB, free: 48 kB / 1.045 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.807e-06/0.3821, allocations: 0 / 1.357 GB, free: 48 kB / 1.045 GB Notification: Performance of matching and sorting (n=23) (initialization): time 0.0009528/0.3831, allocations: 297.8 kB / 1.357 GB, free: 15.75 MB / 1.061 GB Notification: Performance of prepare postOptimizeDAE: time 2.041e-05/0.3831, allocations: 4 kB / 1.357 GB, free: 15.75 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.192e-05/0.3831, allocations: 4 kB / 1.357 GB, free: 15.74 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.108e-05/0.3831, allocations: 7.938 kB / 1.357 GB, free: 15.73 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003176/0.3835, allocations: 55.94 kB / 1.357 GB, free: 15.68 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.095e-05/0.3835, allocations: 8.125 kB / 1.357 GB, free: 15.67 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002552/0.3837, allocations: 35.86 kB / 1.357 GB, free: 15.64 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.52e-05/0.3838, allocations: 12.06 kB / 1.357 GB, free: 15.62 MB / 1.061 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 7 * 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 (23): * Single equations (assignments): 23 * 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 0.0001466/0.3839, allocations: 137.7 kB / 1.358 GB, free: 15.48 MB / 1.061 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001282/0.384, allocations: 27.81 kB / 1.358 GB, free: 15.45 MB / 1.061 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0009426/0.385, allocations: 299.2 kB / 1.358 GB, free: 15.15 MB / 1.061 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.474e-06/0.385, allocations: 4 kB / 1.358 GB, free: 15.15 MB / 1.061 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.541e-06/0.385, allocations: 0 / 1.358 GB, free: 15.15 MB / 1.061 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.218e-06/0.385, allocations: 0 / 1.358 GB, free: 15.15 MB / 1.061 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0004441/0.3854, allocations: 305.3 kB / 1.358 GB, free: 14.8 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.367e-06/0.3854, allocations: 0 / 1.358 GB, free: 14.8 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002836/0.3857, allocations: 55.88 kB / 1.358 GB, free: 14.75 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.963e-06/0.3857, allocations: 4 kB / 1.358 GB, free: 14.74 MB / 1.061 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.708e-05/0.3857, allocations: 4 kB / 1.358 GB, free: 14.74 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.284e-06/0.3857, allocations: 0 / 1.358 GB, free: 14.74 MB / 1.061 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.39e-06/0.3858, allocations: 8 kB / 1.358 GB, free: 14.73 MB / 1.061 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009508/0.3867, allocations: 442.3 kB / 1.359 GB, free: 14.28 MB / 1.061 GB Notification: Performance of postOpt removeConstants (simulation): time 9.789e-05/0.3868, allocations: 108.8 kB / 1.359 GB, free: 14.16 MB / 1.061 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.707e-05/0.3868, allocations: 4 kB / 1.359 GB, free: 14.15 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002811/0.3871, allocations: 31.97 kB / 1.359 GB, free: 14.12 MB / 1.061 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.7e-05/0.3872, allocations: 19.97 kB / 1.359 GB, free: 14.1 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.361e-05/0.3872, allocations: 4 kB / 1.359 GB, free: 14.1 MB / 1.061 GB Notification: Performance of sorting global known variables: time 0.0002032/0.3874, allocations: 190 kB / 1.359 GB, free: 13.91 MB / 1.061 GB Notification: Performance of sort global known variables: time 8e-08/0.3874, allocations: 0 / 1.359 GB, free: 13.91 MB / 1.061 GB Notification: Performance of remove unused functions: time 0.0003808/0.3878, allocations: 55.94 kB / 1.359 GB, free: 13.86 MB / 1.061 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * 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 (20): * Single equations (assignments): 20 * 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 0.001387/0.3892, allocations: 0.9905 MB / 1.36 GB, free: 12.84 MB / 1.061 GB Notification: Performance of simCode: created initialization part: time 0.0008267/0.39, allocations: 220.1 kB / 1.36 GB, free: 12.63 MB / 1.061 GB Notification: Performance of simCode: created event and clocks part: time 2.524e-06/0.39, allocations: 4.062 kB / 1.36 GB, free: 12.62 MB / 1.061 GB Notification: Performance of simCode: created simulation system equations: time 0.0003928/0.3904, allocations: 115.8 kB / 1.36 GB, free: 12.51 MB / 1.061 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0006011/0.391, allocations: 79.62 kB / 1.36 GB, free: 12.43 MB / 1.061 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004658/0.3957, allocations: 2.716 MB / 1.363 GB, free: 9.594 MB / 1.061 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004478/0.3961, allocations: 0.7519 MB / 1.364 GB, free: 8.816 MB / 1.061 GB Notification: Performance of simCode: alias equations: time 0.000156/0.3963, allocations: 34.28 kB / 1.364 GB, free: 8.785 MB / 1.061 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001592/0.3964, allocations: 83.41 kB / 1.364 GB, free: 8.703 MB / 1.061 GB Notification: Performance of SimCode: time 6.71e-07/0.3964, allocations: 0 / 1.364 GB, free: 8.703 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.036/0.4324, allocations: 6.601 MB / 1.37 GB, free: 2.297 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate platform static: time 8.68/9.113, allocations: 3.984 kB / 1.37 GB, free: 2.293 MB / 1.061 GB " [Timeout remaining time 291] (rm -f Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil.pipe ; mkfifo Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil.pipe >> ../files/Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil.sim & python3 -m fmpy simulate --output-file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv --start-time 0 --stop-time 80 --timeout 800 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.032 Buildings_latest_Buildings_Fluid_HeatExchangers_BaseClasses_Examples_HADryCoil.fmu > Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_HeatExchangers_BaseClasses_Examples_HADryCoil.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "Error: Could not read variable TAir.y in file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv. Warning: Get data of variable TAir.y from file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv failed! Error: Could not read variable mWat_flow.y in file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv. Warning: Get data of variable mWat_flow.y from file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv failed! Error: Could not read variable mAir_flow.y in file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv. Warning: Get data of variable mAir_flow.y from file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv failed! Error: Could not read variable hADryCoiAir.hA_1 in file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv. Warning: Get data of variable hADryCoiAir.hA_1 from file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv failed! Error: Could not read variable hADryCoiWat.hA_1 in file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv. Warning: Get data of variable hADryCoiWat.hA_1 from file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv failed! Error: Could not read variable hADryCoiWat.hA_2 in file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv. Warning: Get data of variable hADryCoiWat.hA_2 from file Buildings_latest_Buildings.Fluid.HeatExchangers.BaseClasses.Examples.HADryCoil_res.csv failed! " [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 16.244172567036003]