Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.HeatTransfer.Examples.ConductorSingleLayer.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 0.001762/0.001762, allocations: 97.92 kB / 19.73 MB, free: 2.133 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 0.002357/0.002357, allocations: 216.8 kB / 23.03 MB, free: 4.949 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 1.504/1.504, allocations: 230.6 MB / 256.8 MB, free: 7.797 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.1-maint.11.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.1-maint.11.x/package.mo): time 2.88/2.88, allocations: 476.8 MB / 0.7715 GB, free: 3.941 MB / 0.6231 GB " [Timeout remaining time 177] Using package Buildings with version 11.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.1-maint.11.x/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.HeatTransfer.Examples.ConductorSingleLayer,fileNamePrefix="Buildings_11_Buildings_HeatTransfer_Examples_ConductorSingleLayer",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.HeatTransfer.Examples.ConductorSingleLayer,fileNamePrefix="Buildings_11_Buildings_HeatTransfer_Examples_ConductorSingleLayer",fmuType="cs",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 0.002108/0.002108, allocations: 67.56 kB / 1.118 GB, free: 8.77 MB / 0.8419 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3838/0.3859, allocations: 169.9 MB / 1.284 GB, free: 3.398 MB / 0.9825 GB Notification: Performance of NFInst.instantiate(Buildings.HeatTransfer.Examples.ConductorSingleLayer): time 0.005513/0.3914, allocations: 3.432 MB / 1.287 GB, free: 15.94 MB / 0.9981 GB Notification: Performance of NFInst.instExpressions: time 0.00481/0.3962, allocations: 2.415 MB / 1.29 GB, free: 13.52 MB / 0.9981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006638/0.3969, allocations: 19.81 kB / 1.29 GB, free: 13.5 MB / 0.9981 GB Notification: Performance of NFTyping.typeComponents: time 0.0009752/0.3978, allocations: 238.4 kB / 1.29 GB, free: 13.27 MB / 0.9981 GB Notification: Performance of NFTyping.typeBindings: time 0.001791/0.3996, allocations: 0.5405 MB / 1.291 GB, free: 12.72 MB / 0.9981 GB Notification: Performance of NFTyping.typeClassSections: time 0.002209/0.4018, allocations: 0.5685 MB / 1.291 GB, free: 12.16 MB / 0.9981 GB Notification: Performance of NFFlatten.flatten: time 0.002769/0.4046, allocations: 1.398 MB / 1.292 GB, free: 10.75 MB / 0.9981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0003703/0.405, allocations: 93.73 kB / 1.293 GB, free: 10.66 MB / 0.9981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001131/0.4061, allocations: 462.4 kB / 1.293 GB, free: 10.2 MB / 0.9981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001146/0.4073, allocations: 0.5098 MB / 1.293 GB, free: 9.691 MB / 0.9981 GB Notification: Performance of NFPackage.collectConstants: time 0.0003324/0.4076, allocations: 56 kB / 1.294 GB, free: 9.637 MB / 0.9981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0004501/0.408, allocations: 64 kB / 1.294 GB, free: 9.574 MB / 0.9981 GB Notification: Performance of NFScalarize.scalarize: time 0.000674/0.4087, allocations: 378.9 kB / 1.294 GB, free: 9.203 MB / 0.9981 GB Notification: Performance of NFVerifyModel.verify: time 0.000888/0.4096, allocations: 378.2 kB / 1.294 GB, free: 8.832 MB / 0.9981 GB Notification: Performance of NFConvertDAE.convert: time 0.001465/0.4111, allocations: 0.9413 MB / 1.295 GB, free: 7.887 MB / 0.9981 GB Notification: Performance of FrontEnd - DAE generated: time 6.503e-06/0.4111, allocations: 0 / 1.295 GB, free: 7.887 MB / 0.9981 GB Notification: Performance of FrontEnd: time 2.504e-06/0.4111, allocations: 0 / 1.295 GB, free: 7.887 MB / 0.9981 GB Notification: Performance of Transformations before backend: time 4.372e-05/0.4111, allocations: 4 kB / 1.295 GB, free: 7.883 MB / 0.9981 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 80 * Number of variables: 80 Notification: Performance of Generate backend data structure: time 0.002938/0.4141, allocations: 1.212 MB / 1.296 GB, free: 6.637 MB / 0.9981 GB Notification: Performance of prepare preOptimizeDAE: time 5.006e-05/0.4141, allocations: 12.03 kB / 1.296 GB, free: 6.625 MB / 0.9981 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 2.785e-05/0.4141, allocations: 8.844 kB / 1.296 GB, free: 6.617 MB / 0.9981 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001015/0.4142, allocations: 70.72 kB / 1.297 GB, free: 6.539 MB / 0.9981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0004136/0.4147, allocations: 112.3 kB / 1.297 GB, free: 6.43 MB / 0.9981 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001431/0.4161, allocations: 0.6105 MB / 1.297 GB, free: 5.793 MB / 0.9981 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.455e-05/0.4161, allocations: 37.03 kB / 1.297 GB, free: 5.758 MB / 0.9981 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001005/0.4162, allocations: 63.89 kB / 1.297 GB, free: 5.695 MB / 0.9981 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007336/0.417, allocations: 402.9 kB / 1.298 GB, free: 5.266 MB / 0.9981 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.645e-05/0.417, allocations: 0 / 1.298 GB, free: 5.266 MB / 0.9981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.775e-05/0.417, allocations: 12 kB / 1.298 GB, free: 5.254 MB / 0.9981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.161e-05/0.417, allocations: 8 kB / 1.298 GB, free: 5.246 MB / 0.9981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0004534/0.4175, allocations: 230.4 kB / 1.298 GB, free: 5.023 MB / 0.9981 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 0.003405/0.4209, allocations: 1.864 MB / 1.3 GB, free: 3.082 MB / 0.9981 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001431/0.4223, allocations: 459.2 kB / 1.3 GB, free: 2.625 MB / 0.9981 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000276/0.4226, allocations: 145.2 kB / 1.3 GB, free: 2.48 MB / 0.9981 GB Notification: Performance of preOpt evalFunc (simulation): time 2.509e-05/0.4226, allocations: 8.234 kB / 1.3 GB, free: 2.473 MB / 0.9981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.307e-05/0.4227, allocations: 38.78 kB / 1.3 GB, free: 2.426 MB / 0.9981 GB Notification: Performance of pre-optimization done (n=28): time 2.074e-06/0.4227, allocations: 0 / 1.3 GB, free: 2.426 MB / 0.9981 GB Notification: Performance of matching and sorting (n=30): time 0.002652/0.4253, allocations: 1.065 MB / 1.301 GB, free: 1.324 MB / 0.9981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.701e-05/0.4254, allocations: 55.41 kB / 1.301 GB, free: 1.258 MB / 0.9981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001566/0.4269, allocations: 0.9271 MB / 1.302 GB, free: 324 kB / 0.9981 GB Notification: Performance of collectPreVariables (initialization): time 9.341e-05/0.427, allocations: 41.7 kB / 1.302 GB, free: 276 kB / 0.9981 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004181/0.4274, allocations: 377.4 kB / 1.303 GB, free: 15.89 MB / 1.014 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001579/0.4276, allocations: 119 kB / 1.303 GB, free: 15.78 MB / 1.014 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002583/0.4279, allocations: 166.6 kB / 1.303 GB, free: 15.61 MB / 1.014 GB Notification: Performance of setup shared object (initialization): time 0.0002236/0.4281, allocations: 394.8 kB / 1.303 GB, free: 15.21 MB / 1.014 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004355/0.4285, allocations: 225.8 kB / 1.304 GB, free: 14.99 MB / 1.014 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007769/0.4293, allocations: 0.6235 MB / 1.304 GB, free: 14.18 MB / 1.014 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: con.T[4] = con.T_a_start + (con.T_b_start - con.T_a_start) * con.UA * (con.RNod[1] + con.RNod[2] + con.RNod[3]) (TB.T = con.T_a_start + (con.T_b_start - con.T_a_start) * con.UA * (con.RNod[1] + con.RNod[2] + con.RNod[3])) Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: con2.T[2] = con2.T_a_start + (con2.T_b_start - con2.T_a_start) * con2.UA * (con2.RNod[1] + con2.RNod[2]) (TB1.T = con2.T_a_start + (con2.T_b_start - con2.T_a_start) * con2.UA * (con2.RNod[1] + con2.RNod[2])) Notification: Performance of analyzeInitialSystem (initialization): time 0.0034/0.4327, allocations: 1.622 MB / 1.306 GB, free: 12.36 MB / 1.014 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.684e-05/0.4327, allocations: 4 kB / 1.306 GB, free: 12.36 MB / 1.014 GB Notification: Performance of matching and sorting (n=98) (initialization): time 0.001822/0.4345, allocations: 0.912 MB / 1.307 GB, free: 11.44 MB / 1.014 GB Notification: Performance of prepare postOptimizeDAE: time 3.23e-05/0.4346, allocations: 8 kB / 1.307 GB, free: 11.43 MB / 1.014 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.108e-05/0.4346, allocations: 16 kB / 1.307 GB, free: 11.41 MB / 1.014 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002575/0.4349, allocations: 52.77 kB / 1.307 GB, free: 11.36 MB / 1.014 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007855/0.4356, allocations: 203.7 kB / 1.307 GB, free: 11.16 MB / 1.014 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001484/0.4371, allocations: 1.361 MB / 1.308 GB, free: 9.688 MB / 1.014 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001049/0.4382, allocations: 43.97 kB / 1.308 GB, free: 9.645 MB / 1.014 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001293/0.4383, allocations: 44 kB / 1.308 GB, free: 9.602 MB / 1.014 GB Warning: The initial conditions are over specified. The following 2 initial equations are redundant, so they are removed from the initialization system: con.T[4] = con.T_a_start + (con.T_b_start - con.T_a_start) * con.UA * (con.RNod[1] + con.RNod[2] + con.RNod[3]) con2.T[2] = con2.T_a_start + (con2.T_b_start - con2.T_a_start) * con2.UA * (con2.RNod[1] + con2.RNod[2]). Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 63 * 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 (97): * Single equations (assignments): 96 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0006524/0.439, allocations: 300.5 kB / 1.309 GB, free: 9.301 MB / 1.014 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002831/0.4392, allocations: 87.38 kB / 1.309 GB, free: 9.215 MB / 1.014 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0002324/0.4395, allocations: 84.67 kB / 1.309 GB, free: 9.125 MB / 1.014 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.562e-06/0.4395, allocations: 4 kB / 1.309 GB, free: 9.121 MB / 1.014 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.484e-06/0.4395, allocations: 0 / 1.309 GB, free: 9.121 MB / 1.014 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.35e-06/0.4395, allocations: 0 / 1.309 GB, free: 9.121 MB / 1.014 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002244/0.4417, allocations: 1.026 MB / 1.31 GB, free: 8.031 MB / 1.014 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.031e-06/0.4417, allocations: 0 / 1.31 GB, free: 8.031 MB / 1.014 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000468/0.4422, allocations: 88 kB / 1.31 GB, free: 7.945 MB / 1.014 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001972/0.4424, allocations: 28.84 kB / 1.31 GB, free: 7.914 MB / 1.014 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.971e-05/0.4425, allocations: 19.98 kB / 1.31 GB, free: 7.895 MB / 1.014 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001574/0.444, allocations: 1.326 MB / 1.311 GB, free: 6.457 MB / 1.014 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.817e-06/0.444, allocations: 4.062 kB / 1.311 GB, free: 6.453 MB / 1.014 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001386/0.4454, allocations: 0.6513 MB / 1.312 GB, free: 5.77 MB / 1.014 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005137/0.4459, allocations: 135.4 kB / 1.312 GB, free: 5.637 MB / 1.014 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002748/0.4462, allocations: 8 kB / 1.312 GB, free: 5.629 MB / 1.014 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006376/0.4469, allocations: 19.97 kB / 1.312 GB, free: 5.609 MB / 1.014 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.495e-05/0.447, allocations: 23.91 kB / 1.312 GB, free: 5.586 MB / 1.014 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.708e-05/0.447, allocations: 8 kB / 1.312 GB, free: 5.578 MB / 1.014 GB Notification: Performance of sorting global known variables: time 0.001205/0.4482, allocations: 0.6356 MB / 1.313 GB, free: 4.949 MB / 1.014 GB Notification: Performance of sort global known variables: time 9e-08/0.4482, allocations: 0 / 1.313 GB, free: 4.949 MB / 1.014 GB Notification: Performance of remove unused functions: time 0.001097/0.4493, allocations: 211.9 kB / 1.313 GB, free: 4.742 MB / 1.014 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 6 (con.T[1],con.T[2],con.T[3],con1.T[1],con1.T[2],con2.T[1]) * 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 (29): * Single equations (assignments): 28 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001705/0.451, allocations: 1.208 MB / 1.314 GB, free: 3.492 MB / 1.014 GB Notification: Performance of simCode: created initialization part: time 0.001569/0.4526, allocations: 0.6226 MB / 1.315 GB, free: 2.859 MB / 1.014 GB Notification: Performance of simCode: created event and clocks part: time 6.672e-06/0.4526, allocations: 0 / 1.315 GB, free: 2.859 MB / 1.014 GB Notification: Performance of simCode: created simulation system equations: time 0.0004682/0.453, allocations: 265.5 kB / 1.315 GB, free: 2.59 MB / 1.014 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001383/0.4544, allocations: 179.9 kB / 1.315 GB, free: 2.41 MB / 1.014 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01368/0.4681, allocations: 7.434 MB / 1.322 GB, free: 10.42 MB / 1.029 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005044/0.4686, allocations: 388.3 kB / 1.323 GB, free: 10.02 MB / 1.029 GB Notification: Performance of simCode: alias equations: time 0.0005149/0.4691, allocations: 153.8 kB / 1.323 GB, free: 9.863 MB / 1.029 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004861/0.4696, allocations: 299.3 kB / 1.323 GB, free: 9.57 MB / 1.029 GB Notification: Performance of SimCode: time 1.783e-06/0.4696, allocations: 0 / 1.323 GB, free: 9.57 MB / 1.029 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05841/0.528, allocations: 17.39 MB / 1.34 GB, free: 8.602 MB / 1.045 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.7/14.23, allocations: 13.75 kB / 1.34 GB, free: 8.594 MB / 1.045 GB " [Timeout remaining time 286] (rm -f Buildings_11_Buildings.HeatTransfer.Examples.ConductorSingleLayer.pipe ; mkfifo Buildings_11_Buildings.HeatTransfer.Examples.ConductorSingleLayer.pipe ; head -c 1048576 < Buildings_11_Buildings.HeatTransfer.Examples.ConductorSingleLayer.pipe >> ../files/Buildings_11_Buildings.HeatTransfer.Examples.ConductorSingleLayer.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_11_Buildings.HeatTransfer.Examples.ConductorSingleLayer_res.mat --tempDir=temp_Buildings_11_Buildings_HeatTransfer_Examples_ConductorSingleLayer_fmu --startTime=0 --stopTime=86400 --stepSize=34.56 --timeout=400 --tolerance=1e-06 Buildings_11_Buildings_HeatTransfer_Examples_ConductorSingleLayer.fmu > Buildings_11_Buildings.HeatTransfer.Examples.ConductorSingleLayer.pipe 2>&1) [Timeout 420.0] diffSimulationResults("Buildings_11_Buildings.HeatTransfer.Examples.ConductorSingleLayer_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_11.x/Buildings_HeatTransfer_Examples_ConductorSingleLayer.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_11_Buildings.HeatTransfer.Examples.ConductorSingleLayer.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: 21.26752142002806]