Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1.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 0.001924/0.001924, allocations: 102.7 kB / 16.45 MB, free: 6.504 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 0.002211/0.002211, allocations: 212.9 kB / 19.43 MB, free: 3.656 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 1.508/1.508, allocations: 230.6 MB / 252.8 MB, free: 8.965 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.x/package.mo): time 3.285/3.285, allocations: 0.49 GB / 0.7916 GB, free: 33.62 MB / 0.6231 GB " [Timeout remaining time 176] Using package Buildings with version 12.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.1.1-maint.12.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.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1,fileNamePrefix="Buildings_12_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase1",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1,fileNamePrefix="Buildings_12_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase1",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 0.002085/0.002085, allocations: 74.95 kB / 1.149 GB, free: 26.29 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3812/0.3832, allocations: 176.1 MB / 1.321 GB, free: 3.336 MB / 1.014 GB Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1): time 0.2091/0.5924, allocations: 160.3 MB / 1.477 GB, free: 2.402 MB / 1.17 GB Notification: Performance of NFInst.instExpressions: time 0.03/0.6224, allocations: 21.89 MB / 1.499 GB, free: 12.45 MB / 1.201 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002115/0.6245, allocations: 71.44 kB / 1.499 GB, free: 12.38 MB / 1.201 GB Notification: Performance of NFTyping.typeComponents: time 0.001863/0.6263, allocations: 1.169 MB / 1.5 GB, free: 11.21 MB / 1.201 GB Notification: Performance of NFTyping.typeBindings: time 0.001842/0.6282, allocations: 0.9068 MB / 1.501 GB, free: 10.3 MB / 1.201 GB Notification: Performance of NFTyping.typeClassSections: time 0.001108/0.6293, allocations: 378.9 kB / 1.501 GB, free: 9.926 MB / 1.201 GB Notification: Performance of NFFlatten.flatten: time 0.001561/0.6308, allocations: 1.282 MB / 1.502 GB, free: 8.637 MB / 1.201 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007748/0.6316, allocations: 0.5699 MB / 1.503 GB, free: 8.059 MB / 1.201 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0007604/0.6324, allocations: 0.5685 MB / 1.504 GB, free: 7.488 MB / 1.201 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001251/0.6336, allocations: 0.9995 MB / 1.505 GB, free: 6.484 MB / 1.201 GB Notification: Performance of NFPackage.collectConstants: time 0.0001162/0.6338, allocations: 68 kB / 1.505 GB, free: 6.418 MB / 1.201 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0002801/0.634, allocations: 116 kB / 1.505 GB, free: 6.305 MB / 1.201 GB Notification: Performance of NFScalarize.scalarize: time 0.0003405/0.6344, allocations: 324.6 kB / 1.505 GB, free: 5.988 MB / 1.201 GB Notification: Performance of NFVerifyModel.verify: time 0.0005257/0.6349, allocations: 492.8 kB / 1.505 GB, free: 5.504 MB / 1.201 GB Notification: Performance of NFConvertDAE.convert: time 0.001507/0.6364, allocations: 1.221 MB / 1.507 GB, free: 4.277 MB / 1.201 GB Notification: Performance of FrontEnd - DAE generated: time 5.34e-06/0.6364, allocations: 4 kB / 1.507 GB, free: 4.273 MB / 1.201 GB Notification: Performance of FrontEnd: time 1.673e-06/0.6364, allocations: 0 / 1.507 GB, free: 4.273 MB / 1.201 GB Notification: Performance of Transformations before backend: time 1.814e-05/0.6364, allocations: 0 / 1.507 GB, free: 4.273 MB / 1.201 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 107 * Number of variables: 107 Notification: Performance of Generate backend data structure: time 0.002579/0.639, allocations: 1.529 MB / 1.508 GB, free: 2.691 MB / 1.201 GB Notification: Performance of prepare preOptimizeDAE: time 4.903e-05/0.6391, allocations: 19.97 kB / 1.508 GB, free: 2.672 MB / 1.201 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.000112/0.6392, allocations: 78.72 kB / 1.508 GB, free: 2.586 MB / 1.201 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002078/0.6394, allocations: 144 kB / 1.508 GB, free: 2.445 MB / 1.201 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009652/0.6403, allocations: 0.6913 MB / 1.509 GB, free: 1.703 MB / 1.201 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001364/0.6405, allocations: 70.69 kB / 1.509 GB, free: 1.629 MB / 1.201 GB Notification: Performance of preOpt expandDerOperator (simulation): time 8.729e-05/0.6406, allocations: 48 kB / 1.509 GB, free: 1.582 MB / 1.201 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001002/0.6416, allocations: 0.5145 MB / 1.51 GB, free: 1.051 MB / 1.201 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.017e-05/0.6416, allocations: 7.938 kB / 1.51 GB, free: 1.043 MB / 1.201 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.373e-05/0.6416, allocations: 23.98 kB / 1.51 GB, free: 1.02 MB / 1.201 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.116e-05/0.6417, allocations: 8 kB / 1.51 GB, free: 1.012 MB / 1.201 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009049/0.6426, allocations: 415.7 kB / 1.51 GB, free: 0.6094 MB / 1.201 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 0.003868/0.6464, allocations: 2.74 MB / 1.513 GB, free: 13.63 MB / 1.217 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001005/0.6474, allocations: 414.1 kB / 1.513 GB, free: 13.22 MB / 1.217 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007047/0.6481, allocations: 294.2 kB / 1.513 GB, free: 12.93 MB / 1.217 GB Notification: Performance of preOpt evalFunc (simulation): time 3.912e-05/0.6482, allocations: 4.328 kB / 1.513 GB, free: 12.93 MB / 1.217 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005787/0.6488, allocations: 280 kB / 1.514 GB, free: 12.64 MB / 1.217 GB Notification: Performance of pre-optimization done (n=44): time 2.014e-06/0.6488, allocations: 3.938 kB / 1.514 GB, free: 12.64 MB / 1.217 GB Notification: Performance of matching and sorting (n=44): time 0.002861/0.6516, allocations: 1.149 MB / 1.515 GB, free: 11.44 MB / 1.217 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.94e-05/0.6517, allocations: 59.41 kB / 1.515 GB, free: 11.37 MB / 1.217 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002099/0.6538, allocations: 1.785 MB / 1.517 GB, free: 9.574 MB / 1.217 GB Notification: Performance of collectPreVariables (initialization): time 6.05e-05/0.6538, allocations: 41.7 kB / 1.517 GB, free: 9.527 MB / 1.217 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005001/0.6543, allocations: 0.5255 MB / 1.517 GB, free: 9 MB / 1.217 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001654/0.6545, allocations: 150.7 kB / 1.517 GB, free: 8.852 MB / 1.217 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000171/0.6547, allocations: 106.2 kB / 1.517 GB, free: 8.742 MB / 1.217 GB Notification: Performance of setup shared object (initialization): time 0.0001503/0.6548, allocations: 322 kB / 1.518 GB, free: 8.422 MB / 1.217 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005147/0.6553, allocations: 221 kB / 1.518 GB, free: 8.207 MB / 1.217 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006048/0.6559, allocations: 339.1 kB / 1.518 GB, free: 7.824 MB / 1.217 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001023/0.657, allocations: 0.5076 MB / 1.519 GB, free: 7.27 MB / 1.217 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.412e-06/0.657, allocations: 8 kB / 1.519 GB, free: 7.262 MB / 1.217 GB Notification: Performance of matching and sorting (n=69) (initialization): time 0.001722/0.6587, allocations: 0.8094 MB / 1.52 GB, free: 6.441 MB / 1.217 GB Notification: Performance of prepare postOptimizeDAE: time 2.148e-05/0.6587, allocations: 8 kB / 1.52 GB, free: 6.434 MB / 1.217 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.05e-05/0.6587, allocations: 4.219 kB / 1.52 GB, free: 6.43 MB / 1.217 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004495/0.6592, allocations: 132.8 kB / 1.52 GB, free: 6.297 MB / 1.217 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000457/0.6596, allocations: 99.88 kB / 1.52 GB, free: 6.199 MB / 1.217 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003236/0.6629, allocations: 2.606 MB / 1.522 GB, free: 3.457 MB / 1.217 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004956/0.6634, allocations: 75.52 kB / 1.522 GB, free: 3.383 MB / 1.217 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.566e-05/0.6634, allocations: 28.06 kB / 1.522 GB, free: 3.355 MB / 1.217 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * Number of states: 0 () * Number of discrete variables: 19 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition5,$PRE.intGai.nextTimeEvent,$whenCondition4,$PRE.reference.nextTimeEvent,$whenCondition3,$whenCondition1,mean.y_last,$PRE.mean.y_last,assEqu.satisfied,$PRE.assEqu.satisfied,reference.nextTimeEventScaled,$PRE.reference.nextTimeEventScaled,reference.nextTimeEvent,$whenCondition2,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,intGai.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (54): * Single equations (assignments): 53 * 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 {(1,15,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0005543/0.664, allocations: 391.2 kB / 1.523 GB, free: 2.961 MB / 1.217 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001654/0.6641, allocations: 135.1 kB / 1.523 GB, free: 2.828 MB / 1.217 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0002485/0.6644, allocations: 140.1 kB / 1.523 GB, free: 2.688 MB / 1.217 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.949e-06/0.6644, allocations: 4 kB / 1.523 GB, free: 2.684 MB / 1.217 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.691e-05/0.6644, allocations: 8 kB / 1.523 GB, free: 2.676 MB / 1.217 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.805e-06/0.6644, allocations: 3.984 kB / 1.523 GB, free: 2.672 MB / 1.217 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002599/0.667, allocations: 1.489 MB / 1.525 GB, free: 1.125 MB / 1.217 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.266e-06/0.667, allocations: 0 / 1.525 GB, free: 1.125 MB / 1.217 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002371/0.6672, allocations: 47.95 kB / 1.525 GB, free: 1.078 MB / 1.217 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004322/0.6677, allocations: 161.5 kB / 1.525 GB, free: 0.9141 MB / 1.217 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.657e-05/0.6677, allocations: 12 kB / 1.525 GB, free: 0.9023 MB / 1.217 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004235/0.672, allocations: 4.03 MB / 1.529 GB, free: 12.59 MB / 1.232 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.392e-06/0.672, allocations: 0 / 1.529 GB, free: 12.59 MB / 1.232 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001886/0.6738, allocations: 0.994 MB / 1.53 GB, free: 11.58 MB / 1.232 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002953/0.6741, allocations: 220.2 kB / 1.53 GB, free: 11.35 MB / 1.232 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.039e-05/0.6742, allocations: 12 kB / 1.53 GB, free: 11.34 MB / 1.232 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003235/0.6745, allocations: 27.97 kB / 1.53 GB, free: 11.31 MB / 1.232 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001462/0.6747, allocations: 59.8 kB / 1.53 GB, free: 11.25 MB / 1.232 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.561e-05/0.6747, allocations: 23.98 kB / 1.53 GB, free: 11.23 MB / 1.232 GB Notification: Performance of sorting global known variables: time 0.001566/0.6763, allocations: 1.301 MB / 1.531 GB, free: 9.922 MB / 1.232 GB Notification: Performance of sort global known variables: time 8e-08/0.6763, allocations: 0 / 1.531 GB, free: 9.922 MB / 1.232 GB Notification: Performance of remove unused functions: time 0.0007761/0.6771, allocations: 203.7 kB / 1.531 GB, free: 9.723 MB / 1.232 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 4 (thermalZoneTwoElements.extWallRC.thermCapExt[1].T,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,assEqu.diff,mean.x) * Number of discrete variables: 12 ($whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,intGai.nextTimeEvent,intGai.nextTimeEventScaled,reference.nextTimeEvent,reference.nextTimeEventScaled,assEqu.satisfied,assEqu.nFai,mean.y_last) * Number of discrete states: 7 (intGai.nextTimeEvent,reference.nextTimeEvent,mean.x,assEqu.satisfied,assEqu.nFai,reference.nextTimeEventScaled,intGai.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (28): * Single equations (assignments): 20 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 6 * 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 {(2,12,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.003932/0.681, allocations: 1.899 MB / 1.533 GB, free: 7.98 MB / 1.232 GB Notification: Performance of simCode: created initialization part: time 0.001512/0.6825, allocations: 0.6409 MB / 1.534 GB, free: 7.328 MB / 1.232 GB Notification: Performance of simCode: created event and clocks part: time 3.186e-06/0.6825, allocations: 4.312 kB / 1.534 GB, free: 7.324 MB / 1.232 GB Notification: Performance of simCode: created simulation system equations: time 0.0008998/0.6834, allocations: 0.5125 MB / 1.534 GB, free: 6.785 MB / 1.232 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001022/0.6845, allocations: 211.8 kB / 1.535 GB, free: 6.59 MB / 1.232 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0134/0.6979, allocations: 8.595 MB / 1.543 GB, free: 13.76 MB / 1.248 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009773/0.6988, allocations: 1.157 MB / 1.544 GB, free: 12.57 MB / 1.248 GB Notification: Performance of simCode: alias equations: time 0.0003527/0.6992, allocations: 88.83 kB / 1.544 GB, free: 12.49 MB / 1.248 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000531/0.6997, allocations: 411.3 kB / 1.545 GB, free: 12.09 MB / 1.248 GB Notification: Performance of SimCode: time 1.412e-06/0.6997, allocations: 0 / 1.545 GB, free: 12.09 MB / 1.248 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.06491/0.7646, allocations: 21.17 MB / 1.565 GB, free: 7.168 MB / 1.264 GB Notification: Performance of buildModelFMU: Generate platform static: time 12.37/13.13, allocations: 8.062 kB / 1.565 GB, free: 7.16 MB / 1.264 GB " [Timeout remaining time 287] (rm -f Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1.pipe ; mkfifo Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1.pipe ; head -c 1048576 < Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1.pipe >> ../files/Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1_res.mat --tempDir=temp_Buildings_12_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase1_fmu --startTime=0 --stopTime=5.184e+06 --stepSize=60 --timeout=400 --tolerance=1e-06 Buildings_12_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase1.fmu > Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1.pipe 2>&1) [Timeout 420.0] diffSimulationResults("Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_12.x/Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase1.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_12_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase1.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] "" [Timeout remaining time 299] Reference file matches [Calling sys.exit(0), Time elapsed: 23.751975603867322]