Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.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 0.001745/0.001745, allocations: 101.5 kB / 19.73 MB, free: 2.23 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 0.00225/0.00225, allocations: 216.8 kB / 23.04 MB, free: 5.074 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 1.488/1.488, allocations: 230.6 MB / 256.8 MB, free: 7.969 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 2.796/2.796, allocations: 476.7 MB / 0.7714 GB, free: 4.262 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.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate,fileNamePrefix="Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate",fmuType="cs",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate,fileNamePrefix="Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate",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 0.002321/0.002321, allocations: 67.03 kB / 1.118 GB, free: 40.4 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3402/0.3425, allocations: 170 MB / 1.284 GB, free: 11.7 MB / 0.9825 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate): time 0.2355/0.578, allocations: 194.6 MB / 1.474 GB, free: 8.426 MB / 1.17 GB Notification: Performance of NFInst.instExpressions: time 0.01089/0.5889, allocations: 5.78 MB / 1.48 GB, free: 2.637 MB / 1.17 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001523/0.5904, allocations: 55.56 kB / 1.48 GB, free: 2.582 MB / 1.17 GB Notification: Performance of NFTyping.typeComponents: time 0.001743/0.5922, allocations: 0.6097 MB / 1.48 GB, free: 1.969 MB / 1.17 GB Notification: Performance of NFTyping.typeBindings: time 0.004406/0.5966, allocations: 1.715 MB / 1.482 GB, free: 252 kB / 1.17 GB Notification: Performance of NFTyping.typeClassSections: time 0.003758/0.6004, allocations: 1.262 MB / 1.483 GB, free: 14.99 MB / 1.186 GB Notification: Performance of NFFlatten.flatten: time 0.00423/0.6046, allocations: 2.624 MB / 1.486 GB, free: 12.36 MB / 1.186 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001339/0.6059, allocations: 0.6838 MB / 1.487 GB, free: 11.66 MB / 1.186 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002328/0.6082, allocations: 1.101 MB / 1.488 GB, free: 10.56 MB / 1.186 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002112/0.6104, allocations: 0.885 MB / 1.489 GB, free: 9.676 MB / 1.186 GB Notification: Performance of NFPackage.collectConstants: time 0.0002138/0.6106, allocations: 96 kB / 1.489 GB, free: 9.582 MB / 1.186 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003334/0.6139, allocations: 1.641 MB / 1.49 GB, free: 7.938 MB / 1.186 GB Notification: Performance of NFScalarize.scalarize: time 0.0005523/0.6145, allocations: 418.8 kB / 1.491 GB, free: 7.527 MB / 1.186 GB Notification: Performance of NFVerifyModel.verify: time 0.0008231/0.6153, allocations: 0.5794 MB / 1.491 GB, free: 6.945 MB / 1.186 GB Notification: Performance of NFConvertDAE.convert: time 0.003944/0.6192, allocations: 2.032 MB / 1.493 GB, free: 4.906 MB / 1.186 GB Notification: Performance of FrontEnd - DAE generated: time 5.45e-06/0.6192, allocations: 0 / 1.493 GB, free: 4.906 MB / 1.186 GB Notification: Performance of FrontEnd: time 1.363e-06/0.6192, allocations: 0 / 1.493 GB, free: 4.906 MB / 1.186 GB Notification: Performance of Transformations before backend: time 3.161e-05/0.6193, allocations: 0 / 1.493 GB, free: 4.906 MB / 1.186 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 187 * Number of variables: 187 Notification: Performance of Generate backend data structure: time 0.002918/0.6222, allocations: 1.391 MB / 1.495 GB, free: 3.48 MB / 1.186 GB Notification: Performance of prepare preOptimizeDAE: time 4.962e-05/0.6222, allocations: 12.03 kB / 1.495 GB, free: 3.469 MB / 1.186 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 3.669e-05/0.6223, allocations: 21.98 kB / 1.495 GB, free: 3.445 MB / 1.186 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001708/0.6224, allocations: 126.5 kB / 1.495 GB, free: 3.312 MB / 1.186 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002725/0.6252, allocations: 422.9 kB / 1.495 GB, free: 2.898 MB / 1.186 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001717/0.6269, allocations: 0.7363 MB / 1.496 GB, free: 2.141 MB / 1.186 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.105e-05/0.6269, allocations: 58 kB / 1.496 GB, free: 2.082 MB / 1.186 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000145/0.6271, allocations: 75.94 kB / 1.496 GB, free: 2.008 MB / 1.186 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002124/0.6292, allocations: 0.9827 MB / 1.497 GB, free: 1.008 MB / 1.186 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.187e-05/0.6292, allocations: 0 / 1.497 GB, free: 1.008 MB / 1.186 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.005e-05/0.6293, allocations: 36 kB / 1.497 GB, free: 0.9727 MB / 1.186 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.477e-05/0.6294, allocations: 30 kB / 1.497 GB, free: 0.9414 MB / 1.186 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002009/0.6314, allocations: 0.8743 MB / 1.498 GB, free: 68 kB / 1.186 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 0.007032/0.6384, allocations: 3.436 MB / 1.501 GB, free: 12.45 MB / 1.201 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001693/0.6401, allocations: 0.5851 MB / 1.502 GB, free: 11.85 MB / 1.201 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008176/0.6409, allocations: 325.3 kB / 1.502 GB, free: 11.53 MB / 1.201 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001747/0.6411, allocations: 32.3 kB / 1.502 GB, free: 11.5 MB / 1.201 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.923e-05/0.6411, allocations: 39.22 kB / 1.502 GB, free: 11.45 MB / 1.201 GB Notification: Performance of pre-optimization done (n=39): time 2.294e-06/0.6411, allocations: 0 / 1.502 GB, free: 11.45 MB / 1.201 GB Notification: Performance of matching and sorting (n=41): time 0.008172/0.6493, allocations: 2.255 MB / 1.504 GB, free: 9.156 MB / 1.201 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.654e-05/0.6494, allocations: 55.41 kB / 1.504 GB, free: 9.09 MB / 1.201 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001106/0.6505, allocations: 0.7941 MB / 1.505 GB, free: 8.289 MB / 1.201 GB Notification: Performance of collectPreVariables (initialization): time 9.072e-05/0.6506, allocations: 37.7 kB / 1.505 GB, free: 8.246 MB / 1.201 GB Notification: Performance of collectInitialEqns (initialization): time 0.000389/0.6509, allocations: 452.5 kB / 1.506 GB, free: 7.801 MB / 1.201 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001879/0.6511, allocations: 158.7 kB / 1.506 GB, free: 7.645 MB / 1.201 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002037/0.6513, allocations: 102.3 kB / 1.506 GB, free: 7.539 MB / 1.201 GB Notification: Performance of setup shared object (initialization): time 0.0001461/0.6515, allocations: 330 kB / 1.506 GB, free: 7.211 MB / 1.201 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008546/0.6523, allocations: 301.1 kB / 1.506 GB, free: 6.914 MB / 1.201 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009059/0.6532, allocations: 413 kB / 1.507 GB, free: 6.477 MB / 1.201 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: volDyn.dynBal.medium.p = volDyn.dynBal.p_start (bou.p = volDyn.dynBal.p_start) Notification: Performance of analyzeInitialSystem (initialization): time 0.005524/0.6588, allocations: 1.788 MB / 1.509 GB, free: 4.652 MB / 1.201 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.276e-06/0.6588, allocations: 0 / 1.509 GB, free: 4.652 MB / 1.201 GB Notification: Performance of matching and sorting (n=63) (initialization): time 0.003407/0.6622, allocations: 1.05 MB / 1.51 GB, free: 3.594 MB / 1.201 GB Notification: Performance of prepare postOptimizeDAE: time 2.428e-05/0.6622, allocations: 8 kB / 1.51 GB, free: 3.586 MB / 1.201 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.017e-05/0.6622, allocations: 0 / 1.51 GB, free: 3.586 MB / 1.201 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.00063/0.6628, allocations: 188.8 kB / 1.51 GB, free: 3.398 MB / 1.201 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007335/0.6636, allocations: 143.8 kB / 1.51 GB, free: 3.258 MB / 1.201 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004227/0.6678, allocations: 2.131 MB / 1.512 GB, free: 1.012 MB / 1.201 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001064/0.6689, allocations: 56 kB / 1.512 GB, free: 0.957 MB / 1.201 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.502e-05/0.6689, allocations: 20 kB / 1.512 GB, free: 0.9375 MB / 1.201 GB Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization system: volDyn.dynBal.medium.p = volDyn.dynBal.p_start. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 12 * 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 (59): * Single equations (assignments): 58 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,4)} Notification: Performance of prepare postOptimizeDAE: time 0.0005104/0.6694, allocations: 273.6 kB / 1.512 GB, free: 0.6602 MB / 1.201 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001836/0.6696, allocations: 91.44 kB / 1.512 GB, free: 0.5703 MB / 1.201 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0002064/0.6698, allocations: 100.2 kB / 1.513 GB, free: 480 kB / 1.201 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.771e-06/0.6698, allocations: 7.938 kB / 1.513 GB, free: 472 kB / 1.201 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.452e-06/0.6698, allocations: 4 kB / 1.513 GB, free: 468 kB / 1.201 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002894/0.6727, allocations: 0.9026 MB / 1.513 GB, free: 15.52 MB / 1.217 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005556/0.6783, allocations: 2.074 MB / 1.515 GB, free: 13.35 MB / 1.217 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.961e-06/0.6783, allocations: 0 / 1.515 GB, free: 13.35 MB / 1.217 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000656/0.679, allocations: 124.2 kB / 1.516 GB, free: 13.23 MB / 1.217 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005692/0.6795, allocations: 188.7 kB / 1.516 GB, free: 13.04 MB / 1.217 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.169e-05/0.6796, allocations: 20.05 kB / 1.516 GB, free: 13.02 MB / 1.217 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004005/0.6836, allocations: 2.087 MB / 1.518 GB, free: 10.82 MB / 1.217 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.264e-06/0.6836, allocations: 7.938 kB / 1.518 GB, free: 10.81 MB / 1.217 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004111/0.6877, allocations: 1.413 MB / 1.519 GB, free: 9.336 MB / 1.217 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005947/0.6883, allocations: 163.3 kB / 1.519 GB, free: 9.176 MB / 1.217 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001328/0.6884, allocations: 11.98 kB / 1.519 GB, free: 9.164 MB / 1.217 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008456/0.6893, allocations: 61.75 kB / 1.519 GB, free: 9.105 MB / 1.217 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000117/0.6894, allocations: 35.89 kB / 1.519 GB, free: 9.07 MB / 1.217 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.582e-05/0.6895, allocations: 27.97 kB / 1.52 GB, free: 9.043 MB / 1.217 GB Notification: Performance of sorting global known variables: time 0.0008685/0.6903, allocations: 0.5537 MB / 1.52 GB, free: 8.496 MB / 1.217 GB Notification: Performance of sort global known variables: time 1e-07/0.6903, allocations: 0 / 1.52 GB, free: 8.496 MB / 1.217 GB Notification: Performance of remove unused functions: time 0.0009798/0.6913, allocations: 275.9 kB / 1.52 GB, free: 8.227 MB / 1.217 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 14 * Number of states: 2 (volDyn.dynBal.medium.Xi[1],volDyn.dynBal.U) * 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 (37): * Single equations (assignments): 36 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,4)} Notification: Performance of Backend phase and start with SimCode phase: time 0.004722/0.696, allocations: 2.059 MB / 1.522 GB, free: 6.102 MB / 1.217 GB Notification: Performance of simCode: created initialization part: time 0.00216/0.6982, allocations: 0.7855 MB / 1.523 GB, free: 5.305 MB / 1.217 GB Notification: Performance of simCode: created event and clocks part: time 7.715e-06/0.6982, allocations: 4 kB / 1.523 GB, free: 5.301 MB / 1.217 GB Notification: Performance of simCode: created simulation system equations: time 0.001002/0.6992, allocations: 447.6 kB / 1.524 GB, free: 4.852 MB / 1.217 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002744/0.7019, allocations: 0.5476 MB / 1.524 GB, free: 4.309 MB / 1.217 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01638/0.7183, allocations: 7.685 MB / 1.532 GB, free: 12.34 MB / 1.232 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007618/0.7191, allocations: 1.036 MB / 1.533 GB, free: 11.27 MB / 1.232 GB Notification: Performance of simCode: alias equations: time 0.0008716/0.72, allocations: 199.2 kB / 1.533 GB, free: 11.07 MB / 1.232 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005005/0.7205, allocations: 327.3 kB / 1.533 GB, free: 10.75 MB / 1.232 GB Notification: Performance of SimCode: time 8.32e-07/0.7205, allocations: 0 / 1.533 GB, free: 10.75 MB / 1.232 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.06728/0.7877, allocations: 28.44 MB / 1.561 GB, free: 14.77 MB / 1.264 GB Notification: Performance of buildModelFMU: Generate platform static: time 15.07/15.86, allocations: 15.98 kB / 1.561 GB, free: 14.75 MB / 1.264 GB " [Timeout remaining time 283] (rm -f Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.pipe ; mkfifo Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.pipe ; head -c 1048576 < Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.pipe >> ../files/Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate_res.mat --tempDir=temp_Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate_fmu --startTime=0 --stopTime=10 --stepSize=0.004 --timeout=400 --tolerance=1e-06 Buildings_11_Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.fmu > Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.pipe 2>&1) [Timeout 420.0] diffSimulationResults("Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_11.x/Buildings_Fluid_MixingVolumes_Validation_MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_11_Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate.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: 23.02368744200794]