Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Chemical_Chemical.Boundaries.Tests.TestSubstance.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 0.00174/0.00174, allocations: 85.48 kB / 19.44 MB, free: 340 kB / 13.93 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 0.001942/0.001942, allocations: 173.2 kB / 22.76 MB, free: 1.66 MB / 18.57 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 1.572/1.572, allocations: 177.1 MB / 203.1 MB, free: 5.598 MB / 186.7 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 2.0.0/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 2.0.0/package.mo): time 0.189/0.189, allocations: 17.37 MB / 276.9 MB, free: 11.67 MB / 266.7 MB " [Timeout remaining time 180] Using package Chemical with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 2.0.0/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: translateModel(Chemical.Boundaries.Tests.TestSubstance,tolerance=1e-06,outputFormat="empty",numberOfIntervals=500,variableFilter="",fileNamePrefix="Chemical_Chemical.Boundaries.Tests.TestSubstance") translateModel(Chemical.Boundaries.Tests.TestSubstance,tolerance=1e-06,outputFormat="empty",numberOfIntervals=500,variableFilter="",fileNamePrefix="Chemical_Chemical.Boundaries.Tests.TestSubstance") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.653e-06/1.653e-06, allocations: 0 / 352.7 MB, free: 10.33 MB / 282.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 3.312e-05/3.478e-05, allocations: 4.844 kB / 352.7 MB, free: 10.32 MB / 282.7 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 2.0.0/Interfaces.mo:1564:5-1564:64:writable] Warning: An inner declaration for outer component system could not be found and was automatically generated. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 2.0.0/Interfaces.mo:1564:5-1564:64:writable] Notification: The diagnostics message for the missing inner is: Your model is using an outer \"system\" component but an inner \"system\" component is not defined. For simulation drag Modelica.Fluid.System into your model to specify system properties. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 2.0.0/Boundaries.mo:644:5-644:47:writable] Warning: An inner declaration for outer component dropOfCommons could not be found and was automatically generated. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 2.0.0/Boundaries.mo:644:5-644:47:writable] Notification: The diagnostics message for the missing inner is: Your model is using an outer \"dropOfCommons\" component but an inner \"dropOfCommons\" component is not defined. Use Chemical.DropOfCommons in your model to specify system properties. Notification: Performance of NFInst.instantiate(Chemical.Boundaries.Tests.TestSubstance): time 0.08069/0.08072, allocations: 57.48 MB / 410.2 MB, free: 0.8555 MB / 330.7 MB Notification: Performance of NFInst.instExpressions: time 0.1868/0.2675, allocations: 14.11 MB / 424.3 MB, free: 32.75 MB / 330.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.009239/0.2768, allocations: 108.1 kB / 424.4 MB, free: 32.71 MB / 330.7 MB Notification: Performance of NFTyping.typeComponents: time 0.007782/0.2845, allocations: 2.254 MB / 426.7 MB, free: 31.81 MB / 330.7 MB Notification: Performance of NFTyping.typeBindings: time 0.0116/0.2961, allocations: 3.147 MB / 429.8 MB, free: 30.32 MB / 330.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.007202/0.3033, allocations: 2.142 MB / 431.9 MB, free: 29.12 MB / 330.7 MB Notification: Performance of NFFlatten.flatten: time 0.01212/0.3155, allocations: 9.078 MB / 441 MB, free: 23.68 MB / 330.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.003232/0.3187, allocations: 1.95 MB / 443 MB, free: 22.62 MB / 330.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.01059/0.3293, allocations: 5.327 MB / 448.3 MB, free: 19.29 MB / 330.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.006829/0.3361, allocations: 3.015 MB / 451.3 MB, free: 17.63 MB / 330.7 MB Notification: Performance of NFPackage.collectConstants: time 0.002695/0.3388, allocations: 0.9196 MB / 452.2 MB, free: 17.22 MB / 330.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.008584/0.3474, allocations: 1.855 MB / 454.1 MB, free: 15.38 MB / 330.7 MB Notification: Performance of NFScalarize.scalarize: time 0.003092/0.3505, allocations: 2.811 MB / 456.9 MB, free: 12.7 MB / 330.7 MB Notification: Performance of NFVerifyModel.verify: time 0.008187/0.3587, allocations: 3.202 MB / 460.1 MB, free: 9.633 MB / 330.7 MB Notification: Performance of NFConvertDAE.convert: time 0.01595/0.3746, allocations: 9.481 MB / 469.6 MB, free: 0.9102 MB / 330.7 MB Notification: Performance of FrontEnd - DAE generated: time 4.348e-06/0.3746, allocations: 0 / 469.6 MB, free: 0.9102 MB / 330.7 MB Notification: Performance of FrontEnd: time 1.322e-06/0.3746, allocations: 2.688 kB / 469.6 MB, free: 0.9102 MB / 330.7 MB Notification: Performance of Transformations before backend: time 0.0004083/0.375, allocations: 0 / 469.6 MB, free: 0.9102 MB / 330.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2855 * Number of variables: 2855 Notification: Performance of Generate backend data structure: time 0.02126/0.3963, allocations: 11.28 MB / 480.9 MB, free: 5.648 MB / 346.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.815e-05/0.3963, allocations: 10.69 kB / 480.9 MB, free: 5.641 MB / 346.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009865/0.4062, allocations: 4.387 MB / 485.3 MB, free: 1.289 MB / 346.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008703/0.4149, allocations: 3.93 MB / 489.2 MB, free: 13.39 MB / 362.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.002067/0.417, allocations: 1.614 MB / 490.8 MB, free: 11.69 MB / 362.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00167/0.4187, allocations: 0.9011 MB / 491.7 MB, free: 10.81 MB / 362.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.02786/0.4465, allocations: 13.55 MB / 0.4934 GB, free: 12.98 MB / 378.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001709/0.4467, allocations: 15.06 kB / 0.4934 GB, free: 12.97 MB / 378.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0007568/0.4474, allocations: 381.8 kB / 0.4938 GB, free: 12.62 MB / 378.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.001932/0.4494, allocations: 1.485 MB / 0.4952 GB, free: 11.12 MB / 378.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0341/0.4835, allocations: 16.42 MB / 0.5113 GB, free: 10.66 MB / 394.7 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.114/0.5975, allocations: 55.91 MB / 0.5659 GB, free: 2.621 MB / 442.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.3492/0.9467, allocations: 2.841 MB / 0.5687 GB, free: 149.1 MB / 442.8 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.007107/0.9538, allocations: 1.448 MB / 0.5701 GB, free: 149.1 MB / 442.8 MB Notification: Performance of preOpt evalFunc (simulation): time 0.002604/0.9564, allocations: 0.7301 MB / 0.5708 GB, free: 149 MB / 442.8 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0001054/0.9566, allocations: 79.88 kB / 0.5709 GB, free: 149 MB / 442.8 MB Notification: Performance of pre-optimization done (n=402): time 8.817e-06/0.9566, allocations: 3.844 kB / 0.5709 GB, free: 149 MB / 442.8 MB Notification: Performance of matching and sorting (n=576): time 0.2382/1.195, allocations: 46.75 MB / 0.6165 GB, free: 123.7 MB / 442.8 MB Error: Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singular and cannot be handled because the number of unassigned equations is larger than the number of states. Use -d=bltdump to get more information. Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed! Notification: Performance of inlineWhenForInitialization (initialization): time 0.02134/1.216, allocations: 14.68 MB / 0.6308 GB, free: 108.2 MB / 442.8 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004642/1.221, allocations: 3.765 MB / 0.6345 GB, free: 104.5 MB / 442.8 MB Notification: Performance of collectPreVariables (initialization): time 0.002593/1.223, allocations: 117.7 kB / 0.6346 GB, free: 104.3 MB / 442.8 MB Notification: Performance of collectInitialEqns (initialization): time 0.002964/1.226, allocations: 4.932 MB / 0.6395 GB, free: 100 MB / 442.8 MB Notification: Performance of collectInitialBindings (initialization): time 0.004196/1.23, allocations: 1.999 MB / 0.6414 GB, free: 98.07 MB / 442.8 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.006077/1.237, allocations: 1.784 MB / 0.6431 GB, free: 96.28 MB / 442.8 MB Notification: Performance of setup shared object (initialization): time 6.447e-05/1.237, allocations: 476.8 kB / 0.6436 GB, free: 95.81 MB / 442.8 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.008122/1.245, allocations: 2.45 MB / 0.646 GB, free: 93.36 MB / 442.8 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.008894/1.254, allocations: 3.43 MB / 0.6493 GB, free: 89.59 MB / 442.8 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.02271/1.276, allocations: 8.542 MB / 0.6577 GB, free: 80.7 MB / 442.8 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.116e-05/1.276, allocations: 4 kB / 0.6577 GB, free: 80.69 MB / 442.8 MB Notification: Performance of matching and sorting (n=684) (initialization): time 0.04369/1.32, allocations: 10.06 MB / 0.6675 GB, free: 70.54 MB / 442.8 MB Notification: Performance of prepare postOptimizeDAE: time 4.503e-05/1.32, allocations: 18.59 kB / 0.6675 GB, free: 70.52 MB / 442.8 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.798e-05/1.32, allocations: 16 kB / 0.6675 GB, free: 70.51 MB / 442.8 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.03711/1.357, allocations: 8.214 MB / 0.6756 GB, free: 62.28 MB / 442.8 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.02442/1.382, allocations: 3.477 MB / 0.679 GB, free: 58.82 MB / 442.8 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04226/1.424, allocations: 45.8 MB / 0.7237 GB, free: 10.46 MB / 442.8 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01173/1.436, allocations: 0.5367 MB / 0.7242 GB, free: 9.953 MB / 442.8 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.003209/1.439, allocations: 1.37 MB / 0.7255 GB, free: 8.582 MB / 442.8 MB Warning: Assuming fixed start value for the following 9 variables: boundaryRear4.fore.n_flow:VARIABLE(flow=true unit = \"mol/s\" fixed = true ) \"Molar change of the substance\" type: Real boundaryFore3.rear.n_flow:VARIABLE(flow=true unit = \"mol/s\" fixed = true ) \"Molar change of the substance\" type: Real boundaryRear3.fore.n_flow:VARIABLE(flow=true unit = \"mol/s\" fixed = true ) \"Molar change of the substance\" type: Real boundaryRear2.fore.n_flow:VARIABLE(flow=true unit = \"mol/s\" fixed = true ) \"Molar change of the substance\" type: Real boundaryFore.rear.n_flow:VARIABLE(flow=true unit = \"mol/s\" fixed = true ) \"Molar change of the substance\" type: Real boundaryFore1.rear.n_flow:VARIABLE(flow=true unit = \"mol/s\" fixed = true ) \"Molar change of the substance\" type: Real boundaryFore2.rear.n_flow:VARIABLE(flow=true unit = \"mol/s\" fixed = true ) \"Molar change of the substance\" type: Real boundaryRear1.fore.n_flow:VARIABLE(flow=true unit = \"mol/s\" fixed = true ) \"Molar change of the substance\" type: Real boundaryRear.fore.n_flow:VARIABLE(flow=true unit = \"mol/s\" fixed = true ) \"Molar change of the substance\" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 77 * 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 (586): * Single equations (assignments): 562 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 22 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 20 systems {(1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (8,5,34.4%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(10,38), (8,5)} Notification: Performance of prepare postOptimizeDAE: time 0.005707/1.445, allocations: 486.3 kB / 0.726 GB, free: 8.105 MB / 442.8 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.004217/1.449, allocations: 0.727 MB / 0.7267 GB, free: 7.375 MB / 442.8 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.2335/1.682, allocations: 15.35 MB / 0.7417 GB, free: 124 MB / 442.8 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.02737/1.71, allocations: 5.932 MB / 0.7475 GB, free: 123.8 MB / 442.8 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.902e-05/1.71, allocations: 11.62 kB / 0.7475 GB, free: 123.8 MB / 442.8 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.000199/1.71, allocations: 26.06 kB / 0.7475 GB, free: 123.8 MB / 442.8 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.06933/1.779, allocations: 26.77 MB / 0.7737 GB, free: 116.5 MB / 442.8 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.02e-05/1.779, allocations: 25.84 kB / 0.7737 GB, free: 116.5 MB / 442.8 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.01154/1.791, allocations: 1.422 MB / 0.7751 GB, free: 115.4 MB / 442.8 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.04843/1.839, allocations: 7.275 MB / 0.7822 GB, free: 108.7 MB / 442.8 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001158/1.84, allocations: 243.8 kB / 0.7824 GB, free: 108.5 MB / 442.8 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.04428/1.885, allocations: 44.6 MB / 0.826 GB, free: 61.85 MB / 442.8 MB Error: Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singular and cannot be handled because the number of unassigned equations is larger than the number of states. Use -d=bltdump to get more information. Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed! Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.01513/1.9, allocations: 12.16 MB / 0.8379 GB, free: 49.13 MB / 442.8 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03996/1.94, allocations: 10.78 MB / 0.8484 GB, free: 37.89 MB / 442.8 MB Notification: Performance of postOpt removeConstants (simulation): time 0.001851/1.942, allocations: 0.5942 MB / 0.849 GB, free: 37.6 MB / 442.8 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.003071/1.945, allocations: 155.5 kB / 0.8491 GB, free: 37.46 MB / 442.8 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.007094/1.952, allocations: 264.5 kB / 0.8494 GB, free: 37.22 MB / 442.8 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.002599/1.954, allocations: 0.6368 MB / 0.85 GB, free: 36.58 MB / 442.8 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.001285/1.956, allocations: 395.8 kB / 0.8504 GB, free: 36.19 MB / 442.8 MB Notification: Performance of sorting global known variables: time 0.007449/1.963, allocations: 4.402 MB / 0.8547 GB, free: 31.8 MB / 442.8 MB Notification: Performance of sort global known variables: time 1.6e-07/1.963, allocations: 2.219 kB / 0.8547 GB, free: 31.8 MB / 442.8 MB Notification: Performance of remove unused functions: time 0.01415/1.977, allocations: 3.486 MB / 0.8581 GB, free: 28.33 MB / 442.8 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 109 * Number of states: 19 ($STATESET6.x,boundaryRear4.fore.n_flow,$STATESET5.x,$STATESET4.x[5],$STATESET4.x[4],$STATESET4.x[3],$STATESET4.x[2],$STATESET4.x[1],boundaryFore.rear.n_flow,boundaryRear2.fore.n_flow,boundaryRear3.fore.n_flow,boundaryFore3.rear.n_flow,$STATESET3.x,boundaryFore1.rear.n_flow,$STATESET2.x,boundaryRear1.fore.n_flow,boundaryFore2.rear.n_flow,$STATESET1.x,boundaryRear.fore.n_flow) * Number of discrete variables: 9 ($cse135,$cse124,$cse105,$cse98,$cse91,$cse84,$cse73,$cse65,$cse51) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (419): * Single equations (assignments): 397 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 22 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 15 systems {(1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (8,5,34.4%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 7 systems {(3,3), (3,3), (10,42), (17,21), (3,3), (3,3), (3,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002258/1.98, allocations: 0.5618 MB / 0.8586 GB, free: 27.88 MB / 442.8 MB Notification: Performance of simCode: created initialization part: time 0.02352/2.003, allocations: 9.087 MB / 0.8675 GB, free: 18.46 MB / 442.8 MB Notification: Performance of simCode: created event and clocks part: time 2.828e-05/2.003, allocations: 4 kB / 0.8675 GB, free: 18.46 MB / 442.8 MB Notification: Performance of simCode: created simulation system equations: time 0.01386/2.017, allocations: 6.725 MB / 0.8741 GB, free: 11.44 MB / 442.8 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01158/2.029, allocations: 1.689 MB / 0.8757 GB, free: 9.965 MB / 442.8 MB [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/SimCode/SimCodeUtil.mo:4690:9-4690:59:writable] Error: Internal error function createStateSetsSets failed. [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/SimCode/SimCodeUtil.mo:851:5-851:146:writable] Error: Internal error function createSimCode failed [Transformation from optimised DAE to simulation code structure failed] " [Timeout remaining time 658] [Calling sys.exit(0), Time elapsed: 4.460799372056499]