Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.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 0.001293/0.001293, allocations: 110.4 kB / 18.94 MB, free: 2.949 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 0.001554/0.001554, allocations: 218.9 kB / 22.26 MB, free: 5.121 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 1.513/1.513, allocations: 230.6 MB / 256 MB, free: 7.957 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 3.515/3.515, allocations: 0.505 GB / 0.8101 GB, free: 22.04 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.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow,fileNamePrefix="Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow",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 0.00204/0.00204, allocations: 60.78 kB / 1.177 GB, free: 17.06 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3285/0.3306, allocations: 180.2 MB / 1.353 GB, free: 8.469 MB / 1.045 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow): time 0.002681/0.3333, allocations: 1.129 MB / 1.354 GB, free: 7.34 MB / 1.045 GB Notification: Performance of NFInst.instExpressions: time 0.001518/0.3348, allocations: 1.073 MB / 1.355 GB, free: 6.254 MB / 1.045 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000137/0.3349, allocations: 4 kB / 1.355 GB, free: 6.25 MB / 1.045 GB Notification: Performance of NFTyping.typeComponents: time 7.859e-05/0.335, allocations: 23.67 kB / 1.355 GB, free: 6.227 MB / 1.045 GB Notification: Performance of NFTyping.typeBindings: time 0.0001453/0.3351, allocations: 35.67 kB / 1.355 GB, free: 6.191 MB / 1.045 GB Notification: Performance of NFTyping.typeClassSections: time 0.0002852/0.3354, allocations: 83.91 kB / 1.355 GB, free: 6.109 MB / 1.045 GB Notification: Performance of NFFlatten.flatten: time 0.0002842/0.3357, allocations: 232.2 kB / 1.355 GB, free: 5.883 MB / 1.045 GB Notification: Performance of NFFlatten.resolveConnections: time 0.000223/0.3359, allocations: 96.59 kB / 1.356 GB, free: 5.789 MB / 1.045 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0002645/0.3362, allocations: 103.5 kB / 1.356 GB, free: 5.688 MB / 1.045 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001597/0.3364, allocations: 103.5 kB / 1.356 GB, free: 5.586 MB / 1.045 GB Notification: Performance of NFPackage.collectConstants: time 3.803e-05/0.3364, allocations: 24 kB / 1.356 GB, free: 5.562 MB / 1.045 GB Notification: Performance of NFFlatten.collectFunctions: time 6.379e-05/0.3365, allocations: 28 kB / 1.356 GB, free: 5.535 MB / 1.045 GB Notification: Performance of NFScalarize.scalarize: time 5.048e-05/0.3365, allocations: 51.84 kB / 1.356 GB, free: 5.484 MB / 1.045 GB Notification: Performance of NFVerifyModel.verify: time 0.0001013/0.3366, allocations: 107.4 kB / 1.356 GB, free: 5.379 MB / 1.045 GB Notification: Performance of NFConvertDAE.convert: time 0.0003874/0.337, allocations: 310.9 kB / 1.356 GB, free: 5.074 MB / 1.045 GB Notification: Performance of FrontEnd - DAE generated: time 5.4e-06/0.337, allocations: 4 kB / 1.356 GB, free: 5.07 MB / 1.045 GB Notification: Performance of FrontEnd: time 1.522e-06/0.337, allocations: 0 / 1.356 GB, free: 5.07 MB / 1.045 GB Notification: Performance of Transformations before backend: time 8.917e-06/0.337, allocations: 0 / 1.356 GB, free: 5.07 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: 52 * Number of variables: 52 Notification: Performance of Generate backend data structure: time 0.0007622/0.3378, allocations: 429.7 kB / 1.357 GB, free: 4.617 MB / 1.045 GB Notification: Performance of prepare preOptimizeDAE: time 4.225e-05/0.3378, allocations: 12.03 kB / 1.357 GB, free: 4.605 MB / 1.045 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 7.397e-05/0.3379, allocations: 58.67 kB / 1.357 GB, free: 4.539 MB / 1.045 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001606/0.338, allocations: 32.78 kB / 1.357 GB, free: 4.508 MB / 1.045 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005057/0.3386, allocations: 219.5 kB / 1.357 GB, free: 4.27 MB / 1.045 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.937e-05/0.3386, allocations: 16.81 kB / 1.357 GB, free: 4.254 MB / 1.045 GB Notification: Performance of preOpt expandDerOperator (simulation): time 2.75e-05/0.3386, allocations: 20.38 kB / 1.357 GB, free: 4.234 MB / 1.045 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004243/0.339, allocations: 195.8 kB / 1.357 GB, free: 4.035 MB / 1.045 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.218e-05/0.339, allocations: 3.938 kB / 1.357 GB, free: 4.031 MB / 1.045 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.319e-05/0.3391, allocations: 15.98 kB / 1.357 GB, free: 4.016 MB / 1.045 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.235e-06/0.3391, allocations: 4 kB / 1.357 GB, free: 4.012 MB / 1.045 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0004256/0.3395, allocations: 161.6 kB / 1.357 GB, free: 3.852 MB / 1.045 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0009202/0.3404, allocations: 0.5494 MB / 1.358 GB, free: 3.258 MB / 1.045 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0003889/0.3408, allocations: 156 kB / 1.358 GB, free: 3.098 MB / 1.045 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000175/0.341, allocations: 56.83 kB / 1.358 GB, free: 3.039 MB / 1.045 GB Notification: Performance of preOpt evalFunc (simulation): time 2.889e-05/0.341, allocations: 11.84 kB / 1.358 GB, free: 3.027 MB / 1.045 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.128e-05/0.341, allocations: 34.56 kB / 1.358 GB, free: 2.984 MB / 1.045 GB Notification: Performance of pre-optimization done (n=17): time 1.403e-06/0.341, allocations: 0 / 1.358 GB, free: 2.984 MB / 1.045 GB Notification: Performance of matching and sorting (n=17): time 0.0006211/0.3417, allocations: 215.8 kB / 1.358 GB, free: 2.77 MB / 1.045 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.373e-05/0.3417, allocations: 51.41 kB / 1.358 GB, free: 2.707 MB / 1.045 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001844/0.3419, allocations: 186.2 kB / 1.359 GB, free: 2.512 MB / 1.045 GB Notification: Performance of collectPreVariables (initialization): time 3.102e-05/0.3419, allocations: 25.7 kB / 1.359 GB, free: 2.48 MB / 1.045 GB Notification: Performance of collectInitialEqns (initialization): time 0.000112/0.3421, allocations: 148.4 kB / 1.359 GB, free: 2.332 MB / 1.045 GB Notification: Performance of collectInitialBindings (initialization): time 4.538e-05/0.3421, allocations: 43.7 kB / 1.359 GB, free: 2.289 MB / 1.045 GB Notification: Performance of simplifyInitialFunctions (initialization): time 8.857e-05/0.3422, allocations: 53.69 kB / 1.359 GB, free: 2.23 MB / 1.045 GB Notification: Performance of setup shared object (initialization): time 0.000202/0.3424, allocations: 326.8 kB / 1.359 GB, free: 1.902 MB / 1.045 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001698/0.3426, allocations: 51.95 kB / 1.359 GB, free: 1.852 MB / 1.045 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002064/0.3428, allocations: 110.3 kB / 1.359 GB, free: 1.727 MB / 1.045 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003274/0.3431, allocations: 141 kB / 1.359 GB, free: 1.57 MB / 1.045 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.973e-06/0.3431, allocations: 0 / 1.359 GB, free: 1.57 MB / 1.045 GB Notification: Performance of matching and sorting (n=22) (initialization): time 0.0004425/0.3435, allocations: 203.7 kB / 1.36 GB, free: 1.367 MB / 1.045 GB Notification: Performance of prepare postOptimizeDAE: time 1.619e-05/0.3436, allocations: 8.156 kB / 1.36 GB, free: 1.359 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.721e-06/0.3436, allocations: 0 / 1.36 GB, free: 1.359 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.531e-05/0.3436, allocations: 4 kB / 1.36 GB, free: 1.355 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001978/0.3438, allocations: 35.91 kB / 1.36 GB, free: 1.32 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.623e-06/0.3438, allocations: 0 / 1.36 GB, free: 1.32 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001133/0.3439, allocations: 23.89 kB / 1.36 GB, free: 1.297 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.707e-05/0.3439, allocations: 7.984 kB / 1.36 GB, free: 1.289 MB / 1.045 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 6 * Number of states: 0 () * Number of discrete variables: 15 (reaToInt2.y,actAirSet.or4.y,actAirSet.or2.y,actAirSet.or1.y,actAirSet.ifSetBac.y,actAirSet.ifWarUp.y,actAirSet.ifSetUp.y,actAirSet.ifCooDow.y,actAirSet.ifOcc.y,actAirSet.or3.y,actAirSet.warUpMod.y,actAirSet.setBacMod.y,actAirSet.setUpMod.y,actAirSet.cooDowMod.y,actAirSet.occMod.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (22): * Single equations (assignments): 22 * 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 0.000199/0.3441, allocations: 153.6 kB / 1.36 GB, free: 1.129 MB / 1.045 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.225e-05/0.3441, allocations: 15.91 kB / 1.36 GB, free: 1.113 MB / 1.045 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 4.981e-05/0.3442, allocations: 21.81 kB / 1.36 GB, free: 1.09 MB / 1.045 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.454e-06/0.3442, allocations: 0 / 1.36 GB, free: 1.09 MB / 1.045 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.089e-06/0.3442, allocations: 0 / 1.36 GB, free: 1.09 MB / 1.045 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.607e-05/0.3442, allocations: 7.984 kB / 1.36 GB, free: 1.082 MB / 1.045 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0003187/0.3445, allocations: 256.5 kB / 1.36 GB, free: 0.7891 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.234e-06/0.3445, allocations: 0 / 1.36 GB, free: 0.7891 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001315/0.3447, allocations: 23.98 kB / 1.36 GB, free: 0.7656 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.555e-06/0.3447, allocations: 4 kB / 1.36 GB, free: 0.7617 MB / 1.045 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.046e-05/0.3447, allocations: 0 / 1.36 GB, free: 0.7617 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.673e-06/0.3447, allocations: 0 / 1.36 GB, free: 0.7617 MB / 1.045 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.959e-06/0.3447, allocations: 7.938 kB / 1.36 GB, free: 0.7539 MB / 1.045 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004317/0.3451, allocations: 259.2 kB / 1.36 GB, free: 496 kB / 1.045 GB Notification: Performance of postOpt removeConstants (simulation): time 2.453e-05/0.3452, allocations: 19.84 kB / 1.36 GB, free: 476 kB / 1.045 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 2.455e-05/0.3452, allocations: 8 kB / 1.36 GB, free: 468 kB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001163/0.3453, allocations: 7.984 kB / 1.36 GB, free: 460 kB / 1.045 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.396e-05/0.3454, allocations: 27.88 kB / 1.36 GB, free: 432 kB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.628e-06/0.3454, allocations: 4 kB / 1.36 GB, free: 428 kB / 1.045 GB Notification: Performance of sorting global known variables: time 0.0001063/0.3455, allocations: 128.2 kB / 1.361 GB, free: 300 kB / 1.045 GB Notification: Performance of sort global known variables: time 1e-07/0.3455, allocations: 0 / 1.361 GB, free: 300 kB / 1.045 GB Notification: Performance of remove unused functions: time 0.0002769/0.3458, allocations: 35.89 kB / 1.361 GB, free: 264 kB / 1.045 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 10 (actAirSet.or3.y,actAirSet.ifOcc.y,actAirSet.ifCooDow.y,actAirSet.ifSetUp.y,actAirSet.ifWarUp.y,actAirSet.ifSetBac.y,actAirSet.or1.y,actAirSet.or2.y,actAirSet.or4.y,reaToInt2.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (17): * Single equations (assignments): 17 * 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 0.0007868/0.3465, allocations: 0.8068 MB / 1.361 GB, free: 15.43 MB / 1.061 GB Notification: Performance of simCode: created initialization part: time 0.000406/0.347, allocations: 144.1 kB / 1.362 GB, free: 15.29 MB / 1.061 GB Notification: Performance of simCode: created event and clocks part: time 2.013e-06/0.347, allocations: 7.875 kB / 1.362 GB, free: 15.28 MB / 1.061 GB Notification: Performance of simCode: created simulation system equations: time 0.0001837/0.3471, allocations: 69.36 kB / 1.362 GB, free: 15.21 MB / 1.061 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002946/0.3474, allocations: 19.94 kB / 1.362 GB, free: 15.19 MB / 1.061 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002842/0.3503, allocations: 1.986 MB / 1.364 GB, free: 13.1 MB / 1.061 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004108/0.3507, allocations: 0.7358 MB / 1.364 GB, free: 12.34 MB / 1.061 GB Notification: Performance of simCode: alias equations: time 0.0001021/0.3508, allocations: 25.47 kB / 1.364 GB, free: 12.31 MB / 1.061 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001155/0.3509, allocations: 63.42 kB / 1.364 GB, free: 12.25 MB / 1.061 GB Notification: Performance of SimCode: time 3.41e-07/0.3509, allocations: 0 / 1.364 GB, free: 12.25 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03139/0.3823, allocations: 3.444 MB / 1.368 GB, free: 8.992 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.4/11.79, allocations: 4.25 kB / 1.368 GB, free: 8.992 MB / 1.061 GB " [Timeout remaining time 288] (rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow_res.mat --tempDir=temp_Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow_fmu --startTime=0 --stopTime=3600 --stepSize=1.44 --timeout=800 --tolerance=1e-06 Buildings_latest_Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow.fmu > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.pipe 2>&1) [Timeout 840.0] diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctMixConInletSensor_Subsequences_Validation_ActiveAirFlow.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctMixConInletSensor.Subsequences.Validation.ActiveAirFlow.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: 18.88429883401841]