Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque.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 0.0009125/0.0009125, allocations: 80.92 kB / 21.49 MB, free: 2.996 MB / 18.57 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 0.001054/0.001054, allocations: 171.9 kB / 24.92 MB, free: 8.723 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 0.9792/0.9792, allocations: 177.1 MB / 205.3 MB, free: 5.105 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo): time 0.2517/0.2517, allocations: 32.81 MB / 294.6 MB, free: 1.191 MB / 266.7 MB " [Timeout remaining time 180] Using package ModelicaTest with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/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(ModelicaTest.MultiBody.Forces.Torque,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|Revolute1.phi|Revolute1.w|Revolute2.phi|Revolute2.w|Revolute3.phi|Revolute3.w|Revolute4.phi|Revolute4.w",fileNamePrefix="ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque") translateModel(ModelicaTest.MultiBody.Forces.Torque,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5002,variableFilter="time|Revolute1.phi|Revolute1.w|Revolute2.phi|Revolute2.w|Revolute3.phi|Revolute3.w|Revolute4.phi|Revolute4.w",fileNamePrefix="ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.373e-06/1.373e-06, allocations: 0 / 323.2 MB, free: 9.719 MB / 298.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 1.888e-05/2.026e-05, allocations: 7.953 kB / 323.2 MB, free: 9.711 MB / 298.7 MB Notification: Performance of NFInst.instantiate(ModelicaTest.MultiBody.Forces.Torque): time 0.01153/0.01155, allocations: 14.63 MB / 337.9 MB, free: 11.02 MB / 314.7 MB Notification: Performance of NFInst.instExpressions: time 0.009064/0.02062, allocations: 5.044 MB / 342.9 MB, free: 5.957 MB / 314.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001646/0.02226, allocations: 123.4 kB / 343 MB, free: 5.836 MB / 314.7 MB Notification: Performance of NFTyping.typeComponents: time 0.004944/0.02721, allocations: 5.366 MB / 348.4 MB, free: 464 kB / 314.7 MB Notification: Performance of NFTyping.typeBindings: time 0.004243/0.03145, allocations: 2.667 MB / 351.1 MB, free: 13.77 MB / 330.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.00166/0.03311, allocations: 1.189 MB / 352.2 MB, free: 12.58 MB / 330.7 MB Notification: Performance of NFFlatten.flatten: time 0.005935/0.03905, allocations: 7.598 MB / 359.8 MB, free: 4.973 MB / 330.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.004042/0.04309, allocations: 5.243 MB / 365.1 MB, free: 15.62 MB / 346.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.004166/0.04725, allocations: 4.659 MB / 369.7 MB, free: 10.96 MB / 346.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.002942/0.0502, allocations: 3.285 MB / 373 MB, free: 7.664 MB / 346.7 MB Notification: Performance of NFPackage.collectConstants: time 0.0006266/0.05082, allocations: 0.5078 MB / 373.5 MB, free: 7.156 MB / 346.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.001543/0.05237, allocations: 1.338 MB / 374.9 MB, free: 5.816 MB / 346.7 MB Notification: Performance of NFScalarize.scalarize: time 0.001941/0.05431, allocations: 3.187 MB / 378.1 MB, free: 2.621 MB / 346.7 MB Notification: Performance of NFVerifyModel.verify: time 0.001791/0.0561, allocations: 1.971 MB / 380 MB, free: 0.6445 MB / 346.7 MB Notification: Performance of NFConvertDAE.convert: time 0.00559/0.06169, allocations: 6.671 MB / 386.7 MB, free: 9.949 MB / 362.7 MB Notification: Performance of FrontEnd - DAE generated: time 5.1e-06/0.06169, allocations: 0 / 386.7 MB, free: 9.949 MB / 362.7 MB Notification: Performance of FrontEnd: time 2.274e-06/0.0617, allocations: 4 kB / 386.7 MB, free: 9.945 MB / 362.7 MB Notification: Performance of Transformations before backend: time 0.0001175/0.06181, allocations: 4 kB / 386.7 MB, free: 9.941 MB / 362.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2161 * Number of variables: 2161 Notification: Performance of Generate backend data structure: time 0.01066/0.07247, allocations: 6.93 MB / 393.6 MB, free: 2.941 MB / 362.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.27e-05/0.07252, allocations: 8.031 kB / 393.7 MB, free: 2.934 MB / 362.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004521/0.07704, allocations: 1.511 MB / 395.2 MB, free: 1.422 MB / 362.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004962/0.082, allocations: 3.018 MB / 398.2 MB, free: 14.32 MB / 378.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002223/0.08222, allocations: 365.5 kB / 398.5 MB, free: 13.96 MB / 378.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0008963/0.08312, allocations: 480.1 kB / 399 MB, free: 13.5 MB / 378.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01149/0.09461, allocations: 7.181 MB / 406.2 MB, free: 5.285 MB / 378.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001822/0.09479, allocations: 67.48 kB / 406.3 MB, free: 5.219 MB / 378.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0006155/0.09541, allocations: 219.8 kB / 406.5 MB, free: 5.004 MB / 378.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.001957/0.09736, allocations: 2.336 MB / 408.8 MB, free: 2.664 MB / 378.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.007756/0.1051, allocations: 3.564 MB / 412.4 MB, free: 15.03 MB / 394.7 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.2108/0.3159, allocations: 44.76 MB / 457.1 MB, free: 77.5 MB / 410.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.007331/0.3232, allocations: 2.458 MB / 459.6 MB, free: 77.21 MB / 410.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.001074/0.3243, allocations: 0.5156 MB / 460.1 MB, free: 77.16 MB / 410.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.008198/0.3325, allocations: 4.634 MB / 464.7 MB, free: 76.33 MB / 410.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.717e-05/0.3325, allocations: 60.8 kB / 464.8 MB, free: 76.29 MB / 410.7 MB Notification: Performance of pre-optimization done (n=176): time 6.202e-06/0.3325, allocations: 1.375 kB / 464.8 MB, free: 76.29 MB / 410.7 MB Notification: Performance of matching and sorting (n=185): time 0.02394/0.3565, allocations: 7.97 MB / 472.8 MB, free: 75.48 MB / 410.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 5.873e-05/0.3565, allocations: 228.9 kB / 473 MB, free: 75.23 MB / 410.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004717/0.3612, allocations: 4.76 MB / 477.8 MB, free: 72.12 MB / 410.7 MB Notification: Performance of collectPreVariables (initialization): time 0.0003365/0.3616, allocations: 55.27 kB / 477.8 MB, free: 72.09 MB / 410.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.001557/0.3631, allocations: 4.439 MB / 482.2 MB, free: 68.17 MB / 410.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0009104/0.364, allocations: 0.7975 MB / 483 MB, free: 67.48 MB / 410.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001238/0.3653, allocations: 1.633 MB / 484.7 MB, free: 66.34 MB / 410.7 MB Notification: Performance of setup shared object (initialization): time 3.399e-05/0.3653, allocations: 301.1 kB / 485 MB, free: 66.04 MB / 410.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001515/0.3668, allocations: 1.038 MB / 486 MB, free: 65.15 MB / 410.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002852/0.3697, allocations: 6.307 MB / 492.3 MB, free: 56.23 MB / 410.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.00583/0.3755, allocations: 8.064 MB / 0.4886 GB, free: 46.11 MB / 410.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001479/0.3757, allocations: 56 kB / 0.4887 GB, free: 46.05 MB / 410.7 MB Notification: Performance of matching and sorting (n=1111) (initialization): time 0.01045/0.3861, allocations: 6.017 MB / 0.4946 GB, free: 40.01 MB / 410.7 MB Notification: Performance of prepare postOptimizeDAE: time 7.944e-05/0.3862, allocations: 88 kB / 0.4947 GB, free: 39.93 MB / 410.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001571/0.3864, allocations: 192.1 kB / 0.4948 GB, free: 39.74 MB / 410.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001453/0.3878, allocations: 0.6093 MB / 0.4954 GB, free: 39.12 MB / 410.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003488/0.3913, allocations: 1.899 MB / 0.4973 GB, free: 37.22 MB / 410.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003438/0.3947, allocations: 4.216 MB / 0.5014 GB, free: 32.83 MB / 410.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004989/0.3997, allocations: 383.6 kB / 0.5018 GB, free: 32.45 MB / 410.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0008879/0.4006, allocations: 456 kB / 0.5022 GB, free: 32.01 MB / 410.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 874 * Number of states: 0 () * Number of discrete variables: 67 (torque2.torqueArrow.twoHeadedArrow,torque2.torqueArrow.headAtOrigin,torque1.torqueArrow.twoHeadedArrow,torque1.torqueArrow.headAtOrigin,fixed4.color[3],fixed4.color[2],fixed4.color[1],fixed2.color[3],fixed2.color[2],fixed2.color[1],Revolute4.cylinderColor[3],Revolute4.cylinderColor[2],Revolute4.cylinderColor[1],Revolute3.cylinderColor[3],Revolute3.cylinderColor[2],Revolute3.cylinderColor[1],Revolute2.cylinderColor[3],Revolute2.cylinderColor[2],Revolute2.cylinderColor[1],torque2.connectionLineColor[3],torque2.connectionLineColor[2],torque2.connectionLineColor[1],torque2.torqueColor[3],torque2.torqueColor[2],torque2.torqueColor[1],torque1.connectionLineColor[3],torque1.connectionLineColor[2],torque1.connectionLineColor[1],torque1.torqueColor[3],torque1.torqueColor[2],torque1.torqueColor[1],fixedRotation.color[3],fixedRotation.color[2],fixedRotation.color[1],fixed3.color[3],fixed3.color[2],fixed3.color[1],body2.color[3],body2.color[2],body2.color[1],body2.body.sphereColor[3],body2.body.sphereColor[2],body2.body.sphereColor[1],fixed1.color[3],fixed1.color[2],fixed1.color[1],body1.color[3],body1.color[2],body1.color[1],body1.body.sphereColor[3],body1.body.sphereColor[2],body1.body.sphereColor[1],Revolute1.cylinderColor[3],Revolute1.cylinderColor[2],Revolute1.cylinderColor[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[1],world.axisColor_x[3],world.axisColor_x[2],world.axisColor_x[1],world.groundColor[3],world.groundColor[2],world.groundColor[1],world.gravitySphereColor[3],world.gravitySphereColor[2],world.gravitySphereColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (1059): * Single equations (assignments): 1052 * Array equations: 5 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(2,8,100.0%), (2,8,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.001969/0.4026, allocations: 0.8303 MB / 0.503 GB, free: 31.16 MB / 410.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007751/0.4034, allocations: 299.7 kB / 0.5033 GB, free: 30.87 MB / 410.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001825/0.4052, allocations: 1.314 MB / 0.5046 GB, free: 29.54 MB / 410.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.054e-05/0.4052, allocations: 24 kB / 0.5046 GB, free: 29.52 MB / 410.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.284e-05/0.4052, allocations: 4 kB / 0.5046 GB, free: 29.52 MB / 410.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.141e-05/0.4052, allocations: 7.969 kB / 0.5046 GB, free: 29.51 MB / 410.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.008115/0.4133, allocations: 5.68 MB / 0.5102 GB, free: 23.68 MB / 410.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.258e-05/0.4133, allocations: 8 kB / 0.5102 GB, free: 23.67 MB / 410.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005962/0.4139, allocations: 255.6 kB / 0.5104 GB, free: 23.42 MB / 410.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.001337/0.4153, allocations: 0.6189 MB / 0.511 GB, free: 22.79 MB / 410.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001055/0.4154, allocations: 36 kB / 0.5111 GB, free: 22.76 MB / 410.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002881/0.4183, allocations: 3.823 MB / 0.5148 GB, free: 18.75 MB / 410.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.375e-06/0.4183, allocations: 11.94 kB / 0.5148 GB, free: 18.74 MB / 410.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003139/0.4214, allocations: 2.411 MB / 0.5172 GB, free: 16.21 MB / 410.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.001182/0.4226, allocations: 448.6 kB / 0.5176 GB, free: 15.77 MB / 410.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004364/0.423, allocations: 39.98 kB / 0.5176 GB, free: 15.73 MB / 410.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008395/0.4239, allocations: 40 kB / 0.5177 GB, free: 15.69 MB / 410.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000253/0.4241, allocations: 132.6 kB / 0.5178 GB, free: 15.56 MB / 410.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.254e-05/0.4242, allocations: 47.98 kB / 0.5178 GB, free: 15.51 MB / 410.7 MB Notification: Performance of sorting global known variables: time 0.00184/0.426, allocations: 1.77 MB / 0.5196 GB, free: 13.76 MB / 410.7 MB Notification: Performance of sort global known variables: time 7e-08/0.426, allocations: 0 / 0.5196 GB, free: 13.76 MB / 410.7 MB Notification: Performance of remove unused functions: time 0.005972/0.432, allocations: 1.476 MB / 0.521 GB, free: 12.29 MB / 410.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 32 * Number of states: 8 (Revolute1.phi,Revolute1.w,Revolute3.phi,Revolute3.w,Revolute2.phi,Revolute2.w,Revolute4.phi,Revolute4.w) * 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 (150): * Single equations (assignments): 145 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(2,8,100.0%), (2,8,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0004404/0.4325, allocations: 171.9 kB / 0.5212 GB, free: 12.11 MB / 410.7 MB Notification: Performance of simCode: created initialization part: time 0.004848/0.4373, allocations: 3.54 MB / 0.5246 GB, free: 8.582 MB / 410.7 MB Notification: Performance of simCode: created event and clocks part: time 0.0002451/0.4376, allocations: 121.1 kB / 0.5247 GB, free: 8.453 MB / 410.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0008776/0.4384, allocations: 0.7949 MB / 0.5255 GB, free: 7.633 MB / 410.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003348/0.4418, allocations: 0.8962 MB / 0.5264 GB, free: 6.77 MB / 410.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01471/0.4565, allocations: 10.67 MB / 0.5368 GB, free: 11.9 MB / 426.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00204/0.4585, allocations: 1.784 MB / 0.5386 GB, free: 10.09 MB / 426.7 MB Notification: Performance of simCode: alias equations: time 0.002226/0.4608, allocations: 0.6822 MB / 0.5392 GB, free: 9.41 MB / 426.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001123/0.4619, allocations: 0.7276 MB / 0.5399 GB, free: 8.68 MB / 426.7 MB Notification: Performance of SimCode: time 2.094e-06/0.4619, allocations: 0 / 0.5399 GB, free: 8.68 MB / 426.7 MB Notification: Performance of Templates: time 0.06914/0.531, allocations: 44.32 MB / 0.5832 GB, free: 12.8 MB / 474.7 MB " [Timeout remaining time 659] make -j1 -f ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque.makefile [Timeout 660] (rm -f ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque.pipe ; mkfifo ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque.pipe ; head -c 1048576 < ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque.pipe >> ../files/ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque.sim & ./ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque -abortSlowSimulation -alarm=240 -emit_protected -lv LOG_STATS > ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque.pipe 2>&1) [Timeout 240] diffSimulationResults("ModelicaTest_4.0.0_ModelicaTest.MultiBody.Forces.Torque_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.0.0/ModelicaTest/MultiBody/Forces/Torque/Torque.csv","",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 4.467008159961551]