Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.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 0.001064/0.001064, allocations: 92.22 kB / 19.65 MB, free: 280 kB / 13.93 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 0.001373/0.001373, allocations: 173 kB / 23.02 MB, free: 1.551 MB / 18.57 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 0.9763/0.9763, allocations: 177.1 MB / 203.4 MB, free: 5.648 MB / 186.7 MB " [Timeout remaining time 179] 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 2.085/2.085, allocations: 429.5 MB / 0.6732 GB, free: 4.047 MB / 0.6355 GB " [Timeout remaining time 177] Using package Buildings with version 14.0.0 (/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.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|actAirSet.uOpeMod|actAirSet.VCooMax_flow|actAirSet.VOccMin_flow|actAirSet.VActCooMax_flow|actAirSet.VActMin_flow|actAirSet.VActHeaMax_flow",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow") translateModel(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow,tolerance=1e-06,outputFormat="mat",numberOfIntervals=2500,variableFilter="time|actAirSet.uOpeMod|actAirSet.VCooMax_flow|actAirSet.VOccMin_flow|actAirSet.VActCooMax_flow|actAirSet.VActMin_flow|actAirSet.VActHeaMax_flow",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow") [Timeout 300] "Notification: Performance of FrontEnd - loaded program: time 2.295e-06/2.295e-06, allocations: 0 / 0.8782 GB, free: 6.293 MB / 0.8386 GB Notification: Performance of FrontEnd - Absyn->SCode: time 2.851e-05/3.081e-05, allocations: 5.266 kB / 0.8782 GB, free: 6.289 MB / 0.8386 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow): time 0.003044/0.003075, allocations: 1.306 MB / 0.8795 GB, free: 5.008 MB / 0.8386 GB Notification: Performance of NFInst.instExpressions: time 0.001258/0.004333, allocations: 1.132 MB / 0.8806 GB, free: 3.863 MB / 0.8386 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001615/0.004495, allocations: 11.94 kB / 0.8806 GB, free: 3.852 MB / 0.8386 GB Notification: Performance of NFTyping.typeComponents: time 0.0001572/0.004652, allocations: 39.53 kB / 0.8806 GB, free: 3.812 MB / 0.8386 GB Notification: Performance of NFTyping.typeBindings: time 8.429e-05/0.004736, allocations: 44.61 kB / 0.8807 GB, free: 3.77 MB / 0.8386 GB Notification: Performance of NFTyping.typeClassSections: time 0.0002944/0.005031, allocations: 116.8 kB / 0.8808 GB, free: 3.656 MB / 0.8386 GB Notification: Performance of NFFlatten.flatten: time 0.0002597/0.00529, allocations: 300.3 kB / 0.8811 GB, free: 3.363 MB / 0.8386 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002022/0.005493, allocations: 118.5 kB / 0.8812 GB, free: 3.246 MB / 0.8386 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0002943/0.005787, allocations: 203.4 kB / 0.8814 GB, free: 3.047 MB / 0.8386 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001009/0.005888, allocations: 75.77 kB / 0.8815 GB, free: 2.973 MB / 0.8386 GB Notification: Performance of NFPackage.collectConstants: time 3.292e-05/0.005921, allocations: 28.97 kB / 0.8815 GB, free: 2.945 MB / 0.8386 GB Notification: Performance of NFFlatten.collectFunctions: time 5.353e-05/0.005974, allocations: 31.94 kB / 0.8815 GB, free: 2.914 MB / 0.8386 GB Notification: Performance of NFScalarize.scalarize: time 3.405e-05/0.006008, allocations: 60.53 kB / 0.8816 GB, free: 2.855 MB / 0.8386 GB Notification: Performance of NFVerifyModel.verify: time 5.831e-05/0.006067, allocations: 75.77 kB / 0.8816 GB, free: 2.781 MB / 0.8386 GB Notification: Performance of NFConvertDAE.convert: time 0.0002462/0.006313, allocations: 204.7 kB / 0.8818 GB, free: 2.582 MB / 0.8386 GB Notification: Performance of FrontEnd - DAE generated: time 2.866e-06/0.006316, allocations: 0 / 0.8818 GB, free: 2.582 MB / 0.8386 GB Notification: Performance of FrontEnd: time 9.52e-07/0.006317, allocations: 0 / 0.8818 GB, free: 2.582 MB / 0.8386 GB Notification: Performance of Transformations before backend: time 5.881e-06/0.006322, allocations: 0 / 0.8818 GB, free: 2.582 MB / 0.8386 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 64 * Number of variables: 64 Notification: Performance of Generate backend data structure: time 0.000564/0.006886, allocations: 0.5668 MB / 0.8824 GB, free: 1.977 MB / 0.8386 GB Notification: Performance of prepare preOptimizeDAE: time 4.049e-05/0.006927, allocations: 13.91 kB / 0.8824 GB, free: 1.965 MB / 0.8386 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001661/0.007093, allocations: 56.75 kB / 0.8825 GB, free: 1.91 MB / 0.8386 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0002591/0.007352, allocations: 244.8 kB / 0.8827 GB, free: 1.641 MB / 0.8386 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.87e-05/0.007381, allocations: 18.22 kB / 0.8827 GB, free: 1.625 MB / 0.8386 GB Notification: Performance of preOpt expandDerOperator (simulation): time 2.587e-05/0.007407, allocations: 32.38 kB / 0.8827 GB, free: 1.594 MB / 0.8386 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.000307/0.007714, allocations: 218.7 kB / 0.883 GB, free: 1.363 MB / 0.8386 GB Notification: Performance of preOpt findStateOrder (simulation): time 8.536e-06/0.007722, allocations: 192 / 0.883 GB, free: 1.363 MB / 0.8386 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.132e-05/0.007744, allocations: 12.38 kB / 0.883 GB, free: 1.352 MB / 0.8386 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.458e-06/0.007753, allocations: 4.375 kB / 0.883 GB, free: 1.348 MB / 0.8386 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001466/0.0079, allocations: 98.28 kB / 0.8831 GB, free: 1.258 MB / 0.8386 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.000696/0.008596, allocations: 0.6013 MB / 0.8836 GB, free: 0.6172 MB / 0.8386 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0002415/0.008837, allocations: 123.2 kB / 0.8838 GB, free: 496 kB / 0.8386 GB Notification: Performance of preOpt resolveLoops (simulation): time 5.854e-05/0.008896, allocations: 45.73 kB / 0.8838 GB, free: 448 kB / 0.8386 GB Notification: Performance of preOpt evalFunc (simulation): time 1.659e-05/0.008912, allocations: 0 / 0.8838 GB, free: 448 kB / 0.8386 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.628e-05/0.008939, allocations: 45.33 kB / 0.8839 GB, free: 392 kB / 0.8386 GB Notification: Performance of pre-optimization done (n=19): time 1.273e-06/0.00894, allocations: 0 / 0.8839 GB, free: 392 kB / 0.8386 GB Notification: Performance of matching and sorting (n=19): time 0.0002708/0.009211, allocations: 155.9 kB / 0.884 GB, free: 232 kB / 0.8386 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.838e-05/0.009239, allocations: 63.41 kB / 0.8841 GB, free: 156 kB / 0.8386 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001548/0.009394, allocations: 262.6 kB / 0.8843 GB, free: 15.88 MB / 0.8542 GB Notification: Performance of collectPreVariables (initialization): time 2.192e-05/0.009416, allocations: 37.64 kB / 0.8843 GB, free: 15.83 MB / 0.8542 GB Notification: Performance of collectInitialEqns (initialization): time 9.48e-05/0.00951, allocations: 211.3 kB / 0.8845 GB, free: 15.62 MB / 0.8542 GB Notification: Performance of collectInitialBindings (initialization): time 3.081e-05/0.009541, allocations: 55.64 kB / 0.8846 GB, free: 15.57 MB / 0.8542 GB Notification: Performance of simplifyInitialFunctions (initialization): time 7.086e-05/0.009612, allocations: 71.53 kB / 0.8847 GB, free: 15.48 MB / 0.8542 GB Notification: Performance of setup shared object (initialization): time 0.0001138/0.009726, allocations: 0.4962 MB / 0.8852 GB, free: 14.98 MB / 0.8542 GB Notification: Performance of preBalanceInitialSystem (initialization): time 5.694e-05/0.009783, allocations: 32.44 kB / 0.8852 GB, free: 14.95 MB / 0.8542 GB Notification: Performance of partitionIndependentBlocks (initialization): time 8.572e-05/0.009869, allocations: 107.6 kB / 0.8853 GB, free: 14.81 MB / 0.8542 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0001366/0.01001, allocations: 139.2 kB / 0.8854 GB, free: 14.64 MB / 0.8542 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.667e-06/0.01001, allocations: 4 kB / 0.8854 GB, free: 14.64 MB / 0.8542 GB Notification: Performance of matching and sorting (n=27) (initialization): time 0.0003436/0.01035, allocations: 177.5 kB / 0.8856 GB, free: 14.46 MB / 0.8542 GB Notification: Performance of prepare postOptimizeDAE: time 1.642e-05/0.01037, allocations: 11.94 kB / 0.8856 GB, free: 14.45 MB / 0.8542 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.911e-06/0.01037, allocations: 0 / 0.8856 GB, free: 14.45 MB / 0.8542 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.449e-05/0.01039, allocations: 4 kB / 0.8856 GB, free: 14.44 MB / 0.8542 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001087/0.0105, allocations: 35.91 kB / 0.8856 GB, free: 14.41 MB / 0.8542 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.304e-06/0.01051, allocations: 4 kB / 0.8856 GB, free: 14.4 MB / 0.8542 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 6.35e-05/0.01057, allocations: 23.84 kB / 0.8857 GB, free: 14.38 MB / 0.8542 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.352e-05/0.01058, allocations: 11.98 kB / 0.8857 GB, free: 14.37 MB / 0.8542 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 17 (reaToInt2.y,actAirSet.or4.y,actAirSet.or2.y,actAirSet.gre.greHys.y,$PRE.actAirSet.gre.greHys.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 (27): * Single equations (assignments): 27 * 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 9.576e-05/0.01068, allocations: 176.6 kB / 0.8859 GB, free: 14.18 MB / 0.8542 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 3.33e-05/0.01071, allocations: 27.84 kB / 0.8859 GB, free: 14.16 MB / 0.8542 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 3.429e-05/0.01075, allocations: 21.81 kB / 0.8859 GB, free: 14.13 MB / 0.8542 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.988e-06/0.01075, allocations: 7.984 kB / 0.8859 GB, free: 14.12 MB / 0.8542 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.829e-06/0.01075, allocations: 0 / 0.8859 GB, free: 14.12 MB / 0.8542 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.036e-06/0.01076, allocations: 0 / 0.8859 GB, free: 14.12 MB / 0.8542 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0001809/0.01094, allocations: 212.4 kB / 0.8861 GB, free: 13.88 MB / 0.8542 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.543e-06/0.01094, allocations: 0 / 0.8861 GB, free: 13.88 MB / 0.8542 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 6.184e-05/0.011, allocations: 23.98 kB / 0.8861 GB, free: 13.86 MB / 0.8542 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.845e-06/0.011, allocations: 0 / 0.8861 GB, free: 13.86 MB / 0.8542 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.123e-05/0.01102, allocations: 11.88 kB / 0.8861 GB, free: 13.85 MB / 0.8542 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.503e-06/0.01102, allocations: 0 / 0.8861 GB, free: 13.85 MB / 0.8542 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.934e-06/0.01102, allocations: 7.984 kB / 0.8861 GB, free: 13.84 MB / 0.8542 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0001969/0.01122, allocations: 281.6 kB / 0.8864 GB, free: 13.55 MB / 0.8542 GB Notification: Performance of postOpt removeConstants (simulation): time 2.185e-05/0.01124, allocations: 19.83 kB / 0.8864 GB, free: 13.53 MB / 0.8542 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 2.305e-05/0.01126, allocations: 11.94 kB / 0.8864 GB, free: 13.52 MB / 0.8542 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 5.665e-05/0.01132, allocations: 8 kB / 0.8865 GB, free: 13.51 MB / 0.8542 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.9e-05/0.01139, allocations: 23.95 kB / 0.8865 GB, free: 13.48 MB / 0.8542 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.158e-05/0.0114, allocations: 11.98 kB / 0.8865 GB, free: 13.47 MB / 0.8542 GB Notification: Performance of sorting global known variables: time 7.174e-05/0.01147, allocations: 165.4 kB / 0.8866 GB, free: 13.31 MB / 0.8542 GB Notification: Performance of sort global known variables: time 6e-08/0.01147, allocations: 8 kB / 0.8867 GB, free: 13.3 MB / 0.8542 GB Notification: Performance of remove unused functions: time 0.0001965/0.01167, allocations: 47.84 kB / 0.8867 GB, free: 13.26 MB / 0.8542 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 11 (actAirSet.or3.y,actAirSet.ifOcc.y,actAirSet.ifCooDow.y,actAirSet.ifSetUp.y,actAirSet.ifWarUp.y,actAirSet.ifSetBac.y,actAirSet.or1.y,actAirSet.gre.greHys.y,actAirSet.or2.y,actAirSet.or4.y,reaToInt2.y) * Number of discrete states: 1 (actAirSet.gre.greHys.y) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (19): * Single equations (assignments): 19 * 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 0.0001061/0.01177, allocations: 119.2 kB / 0.8868 GB, free: 13.13 MB / 0.8542 GB Notification: Performance of simCode: created initialization part: time 0.0001974/0.01197, allocations: 114 kB / 0.8869 GB, free: 13.02 MB / 0.8542 GB Notification: Performance of simCode: created event and clocks part: time 1.533e-06/0.01197, allocations: 0 / 0.8869 GB, free: 13.02 MB / 0.8542 GB Notification: Performance of simCode: created simulation system equations: time 6.884e-05/0.01204, allocations: 67.97 kB / 0.887 GB, free: 12.95 MB / 0.8542 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002248/0.01227, allocations: 35.94 kB / 0.887 GB, free: 12.91 MB / 0.8542 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0007136/0.01298, allocations: 392.3 kB / 0.8874 GB, free: 12.5 MB / 0.8542 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 5.243e-05/0.01303, allocations: 85.05 kB / 0.8875 GB, free: 12.4 MB / 0.8542 GB Notification: Performance of simCode: alias equations: time 8.438e-05/0.01312, allocations: 29.94 kB / 0.8875 GB, free: 12.37 MB / 0.8542 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 5.741e-05/0.01317, allocations: 24.5 kB / 0.8875 GB, free: 12.35 MB / 0.8542 GB Notification: Performance of SimCode: time 8.41e-07/0.01317, allocations: 0 / 0.8875 GB, free: 12.35 MB / 0.8542 GB Notification: Performance of Templates: time 0.004306/0.01748, allocations: 2.082 MB / 0.8896 GB, free: 10.36 MB / 0.8542 GB " [Timeout remaining time 300] make -j1 -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow.makefile [Timeout 300] (rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow.sim & ./Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow -abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow.pipe 2>&1) [Timeout 240] diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.ActiveAirFlow_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctColdDuctMin_Subsequences_Validation_ActiveAirFlow.csv","",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "" [Timeout remaining time 300] Reference file matches [Calling sys.exit(0), Time elapsed: 5.270707204937935]