Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001859/0.001859, allocations: 110.1 kB / 16.45 MB, free: 6.035 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00186/0.00186, allocations: 191.8 kB / 19.41 MB, free: 3.539 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.794/1.794, allocations: 225.6 MB / 247.8 MB, free: 13.93 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0-main/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0-main/package.mo): time 1.098/1.098, allocations: 94.59 MB / 397.3 MB, free: 276 kB / 302.1 MB " [Timeout remaining time 179] Using package ThermofluidStream with version 1.2.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream 1.2.0-main/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: "" <> buildModelFMU(ThermofluidStream.Processes.Tests.TransportDelay,fileNamePrefix="ThermofluidStream_ThermofluidStream_Processes_Tests_TransportDelay",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ThermofluidStream.Processes.Tests.TransportDelay,fileNamePrefix="ThermofluidStream_ThermofluidStream_Processes_Tests_TransportDelay",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 0.002676/0.002676, allocations: 84.05 kB / 0.5416 GB, free: 42.47 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1773/0.18, allocations: 71.85 MB / 0.6118 GB, free: 10.09 MB / 462.1 MB Notification: Performance of NFInst.instantiate(ThermofluidStream.Processes.Tests.TransportDelay): time 0.7831/0.9631, allocations: 189.9 MB / 0.7972 GB, free: 2.094 MB / 0.5762 GB Notification: Performance of NFInst.instExpressions: time 0.0112/0.9743, allocations: 7.388 MB / 0.8044 GB, free: 1.914 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001281/0.9755, allocations: 32.59 kB / 0.8044 GB, free: 1.914 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.001463/0.977, allocations: 372.4 kB / 0.8048 GB, free: 1.906 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.005366/0.9824, allocations: 1.331 MB / 0.8061 GB, free: 1.859 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.002805/0.9852, allocations: 0.6695 MB / 0.8067 GB, free: 1.84 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.00484/0.99, allocations: 2.432 MB / 0.8091 GB, free: 1.781 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004119/0.9904, allocations: 127.4 kB / 0.8092 GB, free: 1.746 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003864/0.9943, allocations: 1.665 MB / 0.8108 GB, free: 1.656 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00117/0.9955, allocations: 0.593 MB / 0.8114 GB, free: 1.551 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.0001287/0.9956, allocations: 56.81 kB / 0.8115 GB, free: 1.551 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00334/0.9989, allocations: 1.169 MB / 0.8126 GB, free: 1.523 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.0002429/0.9992, allocations: 155.5 kB / 0.8128 GB, free: 1.488 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.0005957/0.9998, allocations: 407.7 kB / 0.8132 GB, free: 1.355 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.003985/1.004, allocations: 1.495 MB / 0.8146 GB, free: 1.137 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 6.181e-06/1.004, allocations: 0.9375 kB / 0.8146 GB, free: 1.137 MB / 0.5762 GB Notification: Performance of FrontEnd: time 2.104e-06/1.004, allocations: 0 / 0.8146 GB, free: 1.137 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 1.399e-05/1.004, allocations: 0 / 0.8146 GB, free: 1.137 MB / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 118 * Number of variables: 118 Notification: Performance of Generate backend data structure: time 0.003451/1.007, allocations: 1.409 MB / 0.816 GB, free: 304 kB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 4.559e-05/1.007, allocations: 11.16 kB / 0.816 GB, free: 304 kB / 0.5762 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001609/1.007, allocations: 91.61 kB / 0.8161 GB, free: 16.25 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001116/1.009, allocations: 172.6 kB / 0.8163 GB, free: 16.2 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00123/1.01, allocations: 0.6716 MB / 0.8169 GB, free: 15.87 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.821e-05/1.01, allocations: 34.09 kB / 0.8169 GB, free: 15.87 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001129/1.01, allocations: 55.61 kB / 0.817 GB, free: 15.87 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001287/1.011, allocations: 0.5825 MB / 0.8176 GB, free: 15.79 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.314e-05/1.011, allocations: 0 / 0.8176 GB, free: 15.79 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.215e-05/1.011, allocations: 23.12 kB / 0.8176 GB, free: 15.79 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.399e-05/1.011, allocations: 13.47 kB / 0.8176 GB, free: 15.79 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001097/1.012, allocations: 464.7 kB / 0.818 GB, free: 15.79 MB / 0.5919 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.005161/1.018, allocations: 2.685 MB / 0.8207 GB, free: 14.08 MB / 0.5919 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001337/1.019, allocations: 422.8 kB / 0.8211 GB, free: 13.91 MB / 0.5919 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004983/1.019, allocations: 228.1 kB / 0.8213 GB, free: 13.83 MB / 0.5919 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003489/1.02, allocations: 265.7 kB / 0.8215 GB, free: 13.55 MB / 0.5919 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001191/1.021, allocations: 401.6 kB / 0.8219 GB, free: 13.39 MB / 0.5919 GB Notification: Performance of pre-optimization done (n=54): time 3.537e-06/1.021, allocations: 3.938 kB / 0.8219 GB, free: 13.39 MB / 0.5919 GB Notification: Performance of matching and sorting (n=54): time 0.003092/1.024, allocations: 1.032 MB / 0.8229 GB, free: 12.91 MB / 0.5919 GB Notification: Performance of inlineWhenForInitialization (initialization): time 9.257e-05/1.024, allocations: 88.7 kB / 0.823 GB, free: 12.81 MB / 0.5919 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007924/1.025, allocations: 0.5995 MB / 0.8236 GB, free: 12.55 MB / 0.5919 GB Notification: Performance of collectPreVariables (initialization): time 6.978e-05/1.025, allocations: 38.58 kB / 0.8236 GB, free: 12.51 MB / 0.5919 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003078/1.025, allocations: 352.8 kB / 0.824 GB, free: 12.23 MB / 0.5919 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001926/1.026, allocations: 188.4 kB / 0.8242 GB, free: 12.09 MB / 0.5919 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003979/1.026, allocations: 139.6 kB / 0.8243 GB, free: 12.03 MB / 0.5919 GB Notification: Performance of setup shared object (initialization): time 0.0001729/1.026, allocations: 323.4 kB / 0.8246 GB, free: 11.71 MB / 0.5919 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000492/1.027, allocations: 201.9 kB / 0.8248 GB, free: 11.66 MB / 0.5919 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007321/1.027, allocations: 260 kB / 0.825 GB, free: 11.54 MB / 0.5919 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001279/1.029, allocations: 0.5133 MB / 0.8255 GB, free: 11.27 MB / 0.5919 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.953e-06/1.029, allocations: 7.219 kB / 0.8256 GB, free: 11.27 MB / 0.5919 GB Notification: Performance of matching and sorting (n=68) (initialization): time 0.00218/1.031, allocations: 0.7665 MB / 0.8263 GB, free: 10.94 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 8.539e-05/1.031, allocations: 67.55 kB / 0.8264 GB, free: 10.87 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.671e-05/1.031, allocations: 19.02 kB / 0.8264 GB, free: 10.87 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003661/1.031, allocations: 83.25 kB / 0.8265 GB, free: 10.84 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004803/1.032, allocations: 124 kB / 0.8266 GB, free: 10.83 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003812/1.036, allocations: 3.05 MB / 0.8296 GB, free: 7.793 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008678/1.036, allocations: 65.42 kB / 0.8296 GB, free: 7.75 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001227/1.037, allocations: 61.8 kB / 0.8297 GB, free: 7.742 MB / 0.5919 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 6 * Number of states: 0 () * Number of discrete variables: 10 (sawTooth.count,$PRE.sawTooth.count,sawTooth.T_start,$PRE.sawTooth.T_start,$whenCondition2,sawTooth1.count,$PRE.sawTooth1.count,sawTooth1.T_start,$PRE.sawTooth1.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (60): * Single equations (assignments): 52 * Array equations: 0 * Algorithm blocks: 2 * Record equations: 4 * 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 {(1,3,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0006359/1.037, allocations: 195.2 kB / 0.8299 GB, free: 7.582 MB / 0.5919 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000197/1.037, allocations: 83.22 kB / 0.8299 GB, free: 7.535 MB / 0.5919 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00372/1.041, allocations: 1.292 MB / 0.8312 GB, free: 6.887 MB / 0.5919 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.332e-05/1.041, allocations: 8.219 kB / 0.8312 GB, free: 6.887 MB / 0.5919 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.754e-05/1.041, allocations: 0 / 0.8312 GB, free: 6.887 MB / 0.5919 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.227e-05/1.041, allocations: 8.516 kB / 0.8312 GB, free: 6.883 MB / 0.5919 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003745/1.045, allocations: 1.592 MB / 0.8328 GB, free: 5.797 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.877e-05/1.045, allocations: 14.45 kB / 0.8328 GB, free: 5.793 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005253/1.045, allocations: 114.2 kB / 0.8329 GB, free: 5.77 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000425/1.046, allocations: 87.42 kB / 0.833 GB, free: 5.715 MB / 0.5919 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 8.263e-05/1.046, allocations: 41.91 kB / 0.833 GB, free: 5.695 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003434/1.049, allocations: 3.058 MB / 0.836 GB, free: 2.637 MB / 0.5919 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.438e-06/1.049, allocations: 3.156 kB / 0.836 GB, free: 2.637 MB / 0.5919 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002625/1.052, allocations: 1.134 MB / 0.8371 GB, free: 1.965 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004368/1.052, allocations: 221.8 kB / 0.8373 GB, free: 1.766 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000109/1.053, allocations: 13.41 kB / 0.8373 GB, free: 1.758 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006079/1.053, allocations: 31.5 kB / 0.8374 GB, free: 1.742 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001977/1.053, allocations: 94.38 kB / 0.8375 GB, free: 1.695 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001067/1.054, allocations: 62.92 kB / 0.8375 GB, free: 1.684 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.0005963/1.054, allocations: 423.7 kB / 0.8379 GB, free: 1.441 MB / 0.5919 GB Notification: Performance of sort global known variables: time 1e-07/1.054, allocations: 3.188 kB / 0.8379 GB, free: 1.441 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.00146/1.056, allocations: 306.9 kB / 0.8382 GB, free: 1.359 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 4 (transportDelay1.x,flowResistance1.inlet.m_flow,transportDelay.x,flowResistance.inlet.m_flow) * Number of discrete variables: 6 ($whenCondition1,sawTooth1.T_start,sawTooth1.count,$whenCondition2,sawTooth.T_start,sawTooth.count) * Number of discrete states: 2 (sawTooth.count,sawTooth1.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (54): * Single equations (assignments): 44 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 4 * 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 {(1,3,100.0%), (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 0.00424/1.06, allocations: 1.991 MB / 0.8402 GB, free: 36 kB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.002554/1.062, allocations: 0.9572 MB / 0.8411 GB, free: 15.34 MB / 0.6075 GB Notification: Performance of simCode: created event and clocks part: time 3.887e-06/1.062, allocations: 0 / 0.8411 GB, free: 15.34 MB / 0.6075 GB Notification: Performance of simCode: created simulation system equations: time 0.001465/1.064, allocations: 0.6483 MB / 0.8417 GB, free: 14.66 MB / 0.6075 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001251/1.065, allocations: 219.9 kB / 0.8419 GB, free: 14.46 MB / 0.6075 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01233/1.077, allocations: 6.107 MB / 0.8479 GB, free: 8.227 MB / 0.6075 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006748/1.078, allocations: 0.9309 MB / 0.8488 GB, free: 7.27 MB / 0.6075 GB Notification: Performance of simCode: alias equations: time 0.00156/1.08, allocations: 0.6815 MB / 0.8495 GB, free: 6.605 MB / 0.6075 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007605/1.08, allocations: 363.3 kB / 0.8498 GB, free: 6.25 MB / 0.6075 GB Notification: Performance of SimCode: time 1.482e-06/1.08, allocations: 0 / 0.8498 GB, free: 6.25 MB / 0.6075 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1197/1.2, allocations: 23.27 MB / 0.8726 GB, free: 15.29 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.45/14.65, allocations: 11.28 kB / 0.8726 GB, free: 15.29 MB / 0.6387 GB " [Timeout remaining time 645] (rm -f ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay.pipe ; mkfifo ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay.pipe ; head -c 1048576 < ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay.pipe >> ../files/ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat --tempDir=temp_ThermofluidStream_ThermofluidStream_Processes_Tests_TransportDelay_fmu --startTime=0 --stopTime=2.5 --stepSize=0.0025 --timeout=1200 --tolerance=1e-06 ThermofluidStream_ThermofluidStream_Processes_Tests_TransportDelay.fmu > ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay.pipe 2>&1) [Timeout 1260.0] diffSimulationResults("ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat","/mnt/ReferenceFiles/ThermofluidStream-main-regression/ReferenceData/ThermofluidStream.Processes.Tests.TransportDelay_ref.mat","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork_2/OpenModelicaLibraryTesting/files/ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "Error: Could not read variable sawTooth.T_start in file ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat. Warning: Get data of variable sawTooth.T_start from file ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat failed! Error: Could not read variable sawTooth.count in file ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat. Warning: Get data of variable sawTooth.count from file ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat failed! Error: Could not read variable sawTooth1.T_start in file ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat. Warning: Get data of variable sawTooth1.T_start from file ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat failed! Error: Could not read variable sawTooth1.count in file ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat. Warning: Get data of variable sawTooth1.count from file ThermofluidStream_ThermofluidStream.Processes.Tests.TransportDelay_res.mat failed! " [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 19.471785749308765]