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 0.001905/0.001905, allocations: 101.3 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 0.002292/0.002292, allocations: 214.5 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 1.53/1.53, allocations: 230.6 MB / 256.8 MB, free: 7.793 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 2.99/2.99, allocations: 476.8 MB / 0.7715 GB, free: 3.91 MB / 0.6231 GB " [Timeout remaining time 176] 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 0.002267/0.002267, allocations: 65.22 kB / 1.118 GB, free: 39.66 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3676/0.3698, allocations: 170 MB / 1.284 GB, free: 10.61 MB / 0.9825 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.Validation.MixingVolumeHeatReverseFlowPrescribedHeatFlowRate): time 0.2405/0.6103, allocations: 168.4 MB / 1.449 GB, free: 1.617 MB / 1.139 GB Notification: Performance of NFInst.instExpressions: time 0.01173/0.622, allocations: 5.425 MB / 1.454 GB, free: 12.18 MB / 1.154 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001449/0.6235, allocations: 59.5 kB / 1.454 GB, free: 12.12 MB / 1.154 GB Notification: Performance of NFTyping.typeComponents: time 0.00189/0.6254, allocations: 0.5591 MB / 1.454 GB, free: 11.56 MB / 1.154 GB Notification: Performance of NFTyping.typeBindings: time 0.004785/0.6302, allocations: 1.696 MB / 1.456 GB, free: 9.859 MB / 1.154 GB Notification: Performance of NFTyping.typeClassSections: time 0.003647/0.6338, allocations: 1.238 MB / 1.457 GB, free: 8.629 MB / 1.154 GB Notification: Performance of NFFlatten.flatten: time 0.004258/0.6381, allocations: 2.624 MB / 1.46 GB, free: 5.996 MB / 1.154 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001398/0.6395, allocations: 0.6877 MB / 1.461 GB, free: 5.297 MB / 1.154 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002531/0.642, allocations: 1.113 MB / 1.462 GB, free: 4.18 MB / 1.154 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00248/0.6445, allocations: 0.8655 MB / 1.462 GB, free: 3.316 MB / 1.154 GB Notification: Performance of NFPackage.collectConstants: time 0.0003771/0.6449, allocations: 96 kB / 1.463 GB, free: 3.223 MB / 1.154 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003715/0.6486, allocations: 1.309 MB / 1.464 GB, free: 1.91 MB / 1.154 GB Notification: Performance of NFScalarize.scalarize: time 0.0009053/0.6495, allocations: 422.7 kB / 1.464 GB, free: 1.496 MB / 1.154 GB Notification: Performance of NFVerifyModel.verify: time 0.001401/0.6509, allocations: 494 kB / 1.465 GB, free: 1.012 MB / 1.154 GB Notification: Performance of NFConvertDAE.convert: time 0.005108/0.656, allocations: 1.997 MB / 1.467 GB, free: 15.01 MB / 1.17 GB Notification: Performance of FrontEnd - DAE generated: time 6.883e-06/0.656, allocations: 0 / 1.467 GB, free: 15.01 MB / 1.17 GB Notification: Performance of FrontEnd: time 1.883e-06/0.656, allocations: 0 / 1.467 GB, free: 15.01 MB / 1.17 GB Notification: Performance of Transformations before backend: time 5.568e-05/0.6561, allocations: 0 / 1.467 GB, free: 15.01 MB / 1.17 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 0.00365/0.6597, allocations: 1.387 MB / 1.468 GB, free: 13.59 MB / 1.17 GB Notification: Performance of prepare preOptimizeDAE: time 4.992e-05/0.6598, allocations: 8.031 kB / 1.468 GB, free: 13.58 MB / 1.17 GB Notification: Performance of preOpt introduceOutputRealDerivatives (simulation): time 4.307e-05/0.6598, allocations: 26 kB / 1.468 GB, free: 13.55 MB / 1.17 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002132/0.66, allocations: 126.6 kB / 1.468 GB, free: 13.42 MB / 1.17 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003143/0.6632, allocations: 418.9 kB / 1.469 GB, free: 13.01 MB / 1.17 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002131/0.6653, allocations: 0.7362 MB / 1.469 GB, free: 12.25 MB / 1.17 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.439e-05/0.6654, allocations: 58 kB / 1.469 GB, free: 12.19 MB / 1.17 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002178/0.6656, allocations: 75.94 kB / 1.469 GB, free: 12.12 MB / 1.17 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0027/0.6683, allocations: 1.359 MB / 1.471 GB, free: 10.65 MB / 1.17 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.111e-05/0.6683, allocations: 4 kB / 1.471 GB, free: 10.64 MB / 1.17 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001139/0.6684, allocations: 35.98 kB / 1.471 GB, free: 10.61 MB / 1.17 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.923e-05/0.6685, allocations: 33.98 kB / 1.471 GB, free: 10.57 MB / 1.17 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002437/0.671, allocations: 0.8665 MB / 1.472 GB, free: 9.707 MB / 1.17 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 0.008565/0.6795, allocations: 2.776 MB / 1.474 GB, free: 6.852 MB / 1.17 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001899/0.6814, allocations: 0.5813 MB / 1.475 GB, free: 6.262 MB / 1.17 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008689/0.6823, allocations: 329.2 kB / 1.475 GB, free: 5.938 MB / 1.17 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001844/0.6825, allocations: 24.31 kB / 1.475 GB, free: 5.914 MB / 1.17 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.594e-05/0.6825, allocations: 39.22 kB / 1.475 GB, free: 5.867 MB / 1.17 GB Notification: Performance of pre-optimization done (n=39): time 2.905e-06/0.6825, allocations: 0 / 1.475 GB, free: 5.867 MB / 1.17 GB Notification: Performance of matching and sorting (n=41): time 0.009201/0.6917, allocations: 2.255 MB / 1.478 GB, free: 3.57 MB / 1.17 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.613e-05/0.6918, allocations: 59.41 kB / 1.478 GB, free: 3.5 MB / 1.17 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001424/0.6932, allocations: 0.7902 MB / 1.478 GB, free: 2.703 MB / 1.17 GB Notification: Performance of collectPreVariables (initialization): time 0.0001668/0.6934, allocations: 37.7 kB / 1.478 GB, free: 2.66 MB / 1.17 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004408/0.6938, allocations: 456.4 kB / 1.479 GB, free: 2.211 MB / 1.17 GB Notification: Performance of collectInitialBindings (initialization): time 0.000255/0.6941, allocations: 154.7 kB / 1.479 GB, free: 2.059 MB / 1.17 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002388/0.6943, allocations: 106.3 kB / 1.479 GB, free: 1.949 MB / 1.17 GB Notification: Performance of setup shared object (initialization): time 0.0001599/0.6945, allocations: 322 kB / 1.479 GB, free: 1.629 MB / 1.17 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008765/0.6953, allocations: 309.1 kB / 1.48 GB, free: 1.324 MB / 1.17 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009908/0.6963, allocations: 456.5 kB / 1.48 GB, free: 0.832 MB / 1.17 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 0.005939/0.7023, allocations: 1.805 MB / 1.482 GB, free: 14.99 MB / 1.186 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.612e-06/0.7023, allocations: 4 kB / 1.482 GB, free: 14.99 MB / 1.186 GB Notification: Performance of matching and sorting (n=63) (initialization): time 0.003789/0.7061, allocations: 1.039 MB / 1.483 GB, free: 13.94 MB / 1.186 GB Notification: Performance of prepare postOptimizeDAE: time 3.325e-05/0.7061, allocations: 8 kB / 1.483 GB, free: 13.93 MB / 1.186 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.554e-05/0.7061, allocations: 4 kB / 1.483 GB, free: 13.93 MB / 1.186 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0007069/0.7068, allocations: 196.8 kB / 1.483 GB, free: 13.73 MB / 1.186 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008149/0.7076, allocations: 143.8 kB / 1.483 GB, free: 13.59 MB / 1.186 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004635/0.7123, allocations: 2.094 MB / 1.485 GB, free: 11.38 MB / 1.186 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001135/0.7134, allocations: 51.95 kB / 1.485 GB, free: 11.33 MB / 1.186 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001096/0.7135, allocations: 23.98 kB / 1.485 GB, free: 11.31 MB / 1.186 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 0.000614/0.7141, allocations: 272.2 kB / 1.486 GB, free: 11.04 MB / 1.186 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002841/0.7144, allocations: 95.38 kB / 1.486 GB, free: 10.94 MB / 1.186 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0002705/0.7147, allocations: 100.4 kB / 1.486 GB, free: 10.84 MB / 1.186 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.893e-06/0.7147, allocations: 4 kB / 1.486 GB, free: 10.84 MB / 1.186 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.963e-06/0.7147, allocations: 4 kB / 1.486 GB, free: 10.83 MB / 1.186 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003167/0.7179, allocations: 0.8948 MB / 1.487 GB, free: 9.902 MB / 1.186 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006292/0.7242, allocations: 1.953 MB / 1.489 GB, free: 7.855 MB / 1.186 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.259e-05/0.7242, allocations: 4 kB / 1.489 GB, free: 7.852 MB / 1.186 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007225/0.7249, allocations: 128.2 kB / 1.489 GB, free: 7.727 MB / 1.186 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0006451/0.7255, allocations: 192.7 kB / 1.489 GB, free: 7.535 MB / 1.186 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.032e-05/0.7256, allocations: 12 kB / 1.489 GB, free: 7.523 MB / 1.186 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004094/0.7297, allocations: 2.06 MB / 1.491 GB, free: 5.348 MB / 1.186 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.177e-06/0.7297, allocations: 15.91 kB / 1.491 GB, free: 5.332 MB / 1.186 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00434/0.734, allocations: 1.405 MB / 1.492 GB, free: 3.863 MB / 1.186 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006164/0.7347, allocations: 167.4 kB / 1.492 GB, free: 3.699 MB / 1.186 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002315/0.7349, allocations: 12 kB / 1.492 GB, free: 3.688 MB / 1.186 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001089/0.736, allocations: 59.22 kB / 1.493 GB, free: 3.633 MB / 1.186 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001291/0.7361, allocations: 43.81 kB / 1.493 GB, free: 3.59 MB / 1.186 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000101/0.7362, allocations: 31.98 kB / 1.493 GB, free: 3.559 MB / 1.186 GB Notification: Performance of sorting global known variables: time 0.0009366/0.7372, allocations: 0.5498 MB / 1.493 GB, free: 3.016 MB / 1.186 GB Notification: Performance of sort global known variables: time 1.01e-07/0.7372, allocations: 0 / 1.493 GB, free: 3.016 MB / 1.186 GB Notification: Performance of remove unused functions: time 0.001099/0.7382, allocations: 279.9 kB / 1.493 GB, free: 2.742 MB / 1.186 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 0.00495/0.7432, allocations: 2.05 MB / 1.495 GB, free: 0.6289 MB / 1.186 GB Notification: Performance of simCode: created initialization part: time 0.002361/0.7456, allocations: 0.7818 MB / 1.496 GB, free: 15.84 MB / 1.201 GB Notification: Performance of simCode: created event and clocks part: time 9.678e-06/0.7456, allocations: 7.938 kB / 1.496 GB, free: 15.83 MB / 1.201 GB Notification: Performance of simCode: created simulation system equations: time 0.001148/0.7467, allocations: 447.5 kB / 1.497 GB, free: 15.38 MB / 1.201 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003306/0.75, allocations: 0.546 MB / 1.497 GB, free: 14.84 MB / 1.201 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01863/0.7687, allocations: 7.685 MB / 1.505 GB, free: 6.863 MB / 1.201 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000561/0.7692, allocations: 454.5 kB / 1.505 GB, free: 6.391 MB / 1.201 GB Notification: Performance of simCode: alias equations: time 0.0009066/0.7701, allocations: 207.2 kB / 1.505 GB, free: 6.184 MB / 1.201 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005498/0.7707, allocations: 315.3 kB / 1.506 GB, free: 5.875 MB / 1.201 GB Notification: Performance of SimCode: time 9.02e-07/0.7707, allocations: 0 / 1.506 GB, free: 5.875 MB / 1.201 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.07285/0.8435, allocations: 29.89 MB / 1.535 GB, free: 8.719 MB / 1.232 GB Notification: Performance of buildModelFMU: Generate platform static: time 15.37/16.22, allocations: 20.03 kB / 1.535 GB, free: 8.699 MB / 1.232 GB " [Timeout remaining time 284] (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: 23.620465705054812]