Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2.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 0.001446/0.001446, allocations: 123.4 kB / 17.79 MB, free: 5.266 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 0.001494/0.001494, allocations: 200.3 kB / 20.74 MB, free: 2.32 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 1.674/1.674, allocations: 230.6 MB / 254.1 MB, free: 15.1 MB / 206.1 MB " [Timeout remaining time 178] 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(Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5011,variableFilter="time|sample1.y|sample2.y|hold1.y",fileNamePrefix="Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2") translateModel(Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5011,variableFilter="time|sample1.y|sample2.y|hold1.y",fileNamePrefix="Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 0.001687/0.001687, allocations: 43.94 kB / 373.5 MB, free: 9.73 MB / 302.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1432/0.1449, allocations: 53.33 MB / 426.8 MB, free: 4.305 MB / 350.1 MB Notification: Performance of NFInst.instantiate(Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2): time 0.003553/0.1484, allocations: 1.617 MB / 428.4 MB, free: 2.68 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.0005987/0.149, allocations: 195.3 kB / 428.6 MB, free: 2.488 MB / 350.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001068/0.1491, allocations: 0 / 428.6 MB, free: 2.488 MB / 350.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0001386/0.1493, allocations: 15.8 kB / 428.6 MB, free: 2.473 MB / 350.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0001577/0.1494, allocations: 15.92 kB / 428.6 MB, free: 2.457 MB / 350.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0002584/0.1497, allocations: 55.83 kB / 428.7 MB, free: 2.402 MB / 350.1 MB Notification: Performance of NFFlatten.flatten: time 0.0001525/0.1498, allocations: 55.91 kB / 428.7 MB, free: 2.348 MB / 350.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0001651/0.15, allocations: 27.92 kB / 428.8 MB, free: 2.32 MB / 350.1 MB Notification: Performance of NFEvalConstants.evaluate: time 6.028e-05/0.1501, allocations: 31.91 kB / 428.8 MB, free: 2.289 MB / 350.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0001281/0.1502, allocations: 39.72 kB / 428.8 MB, free: 2.25 MB / 350.1 MB Notification: Performance of NFPackage.collectConstants: time 3.117e-05/0.1502, allocations: 8 kB / 428.8 MB, free: 2.242 MB / 350.1 MB Notification: Performance of NFFlatten.collectFunctions: time 1.867e-05/0.1502, allocations: 4 kB / 428.9 MB, free: 2.238 MB / 350.1 MB Notification: Performance of NFScalarize.scalarize: time 7.958e-05/0.1503, allocations: 27.91 kB / 428.9 MB, free: 2.211 MB / 350.1 MB Notification: Performance of NFVerifyModel.verify: time 6.985e-05/0.1504, allocations: 43.69 kB / 428.9 MB, free: 2.168 MB / 350.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0002188/0.1506, allocations: 91.52 kB / 429 MB, free: 2.078 MB / 350.1 MB Notification: Performance of FrontEnd - DAE generated: time 7.043e-06/0.1506, allocations: 0 / 429 MB, free: 2.078 MB / 350.1 MB Notification: Performance of FrontEnd: time 2.595e-06/0.1506, allocations: 0 / 429 MB, free: 2.078 MB / 350.1 MB Notification: Performance of Transformations before backend: time 7.023e-06/0.1506, allocations: 4 kB / 429 MB, free: 2.074 MB / 350.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 17 * Number of variables: 17 Notification: Performance of Generate backend data structure: time 0.0007994/0.1514, allocations: 406.9 kB / 429.4 MB, free: 1.625 MB / 350.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.847e-05/0.1515, allocations: 8.031 kB / 429.4 MB, free: 1.617 MB / 350.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 5.091e-05/0.1515, allocations: 16.83 kB / 429.4 MB, free: 1.602 MB / 350.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0003327/0.1519, allocations: 220.1 kB / 429.7 MB, free: 1.348 MB / 350.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.061e-05/0.1519, allocations: 8.375 kB / 429.7 MB, free: 1.34 MB / 350.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 1.81e-05/0.1519, allocations: 4.375 kB / 429.7 MB, free: 1.336 MB / 350.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0005026/0.1524, allocations: 215.1 kB / 429.9 MB, free: 1.109 MB / 350.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.12e-05/0.1524, allocations: 4.188 kB / 429.9 MB, free: 1.105 MB / 350.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.397e-05/0.1524, allocations: 7.938 kB / 429.9 MB, free: 1.098 MB / 350.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.963e-06/0.1524, allocations: 0 / 429.9 MB, free: 1.098 MB / 350.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001416/0.1526, allocations: 55.91 kB / 429.9 MB, free: 1.043 MB / 350.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0005729/0.1532, allocations: 389.8 kB / 430.3 MB, free: 0.6055 MB / 350.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0002156/0.1534, allocations: 127.8 kB / 430.4 MB, free: 464 kB / 350.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001356/0.1535, allocations: 70.59 kB / 430.5 MB, free: 384 kB / 350.1 MB Notification: Performance of preOpt evalFunc (simulation): time 2.996e-05/0.1535, allocations: 4 kB / 430.5 MB, free: 380 kB / 350.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.787e-05/0.1536, allocations: 42.5 kB / 430.6 MB, free: 328 kB / 350.1 MB Notification: Performance of pre-optimization done (n=12): time 1.122e-06/0.1536, allocations: 0 / 430.6 MB, free: 328 kB / 350.1 MB Notification: Performance of matching and sorting (n=12): time 0.000473/0.1541, allocations: 157.5 kB / 430.7 MB, free: 164 kB / 350.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 9.429e-05/0.1541, allocations: 114.8 kB / 430.8 MB, free: 24 kB / 350.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001814/0.1543, allocations: 161.2 kB / 431 MB, free: 15.86 MB / 366.1 MB Notification: Performance of collectPreVariables (initialization): time 2.483e-05/0.1544, allocations: 25.95 kB / 431 MB, free: 15.83 MB / 366.1 MB Notification: Performance of collectInitialEqns (initialization): time 9.593e-05/0.1544, allocations: 100.4 kB / 431.1 MB, free: 15.72 MB / 366.1 MB Notification: Performance of collectInitialBindings (initialization): time 2.253e-05/0.1545, allocations: 11.95 kB / 431.1 MB, free: 15.71 MB / 366.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 5.936e-05/0.1545, allocations: 33.64 kB / 431.2 MB, free: 15.67 MB / 366.1 MB Notification: Performance of setup shared object (initialization): time 0.0001629/0.1547, allocations: 322.8 kB / 431.5 MB, free: 15.35 MB / 366.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 6.62e-05/0.1548, allocations: 19.98 kB / 431.5 MB, free: 15.33 MB / 366.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001144/0.1549, allocations: 81.44 kB / 431.6 MB, free: 15.21 MB / 366.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0001771/0.1551, allocations: 121.2 kB / 431.7 MB, free: 15.06 MB / 366.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.941e-06/0.1551, allocations: 4.312 kB / 431.7 MB, free: 15.06 MB / 366.1 MB Notification: Performance of matching and sorting (n=12) (initialization): time 0.0002335/0.1553, allocations: 125.4 kB / 431.8 MB, free: 14.93 MB / 366.1 MB Notification: Performance of prepare postOptimizeDAE: time 2.011e-05/0.1553, allocations: 11.94 kB / 431.8 MB, free: 14.92 MB / 366.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.363e-06/0.1553, allocations: 0 / 431.8 MB, free: 14.92 MB / 366.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.894e-05/0.1553, allocations: 7.938 kB / 431.8 MB, free: 14.91 MB / 366.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001213/0.1555, allocations: 27.98 kB / 431.9 MB, free: 14.88 MB / 366.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 9.959e-06/0.1555, allocations: 4.344 kB / 431.9 MB, free: 14.88 MB / 366.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 5.846e-05/0.1555, allocations: 11.95 kB / 431.9 MB, free: 14.87 MB / 366.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.282e-05/0.1555, allocations: 4 kB / 431.9 MB, free: 14.86 MB / 366.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 11 * Number of states: 0 () * Number of discrete variables: 12 (sample1.u,integerConstant.y,sum2.y,sum2.u[2],sum2.u[1],sum1.y,sum1.u[2],sum1.u[1],sample2.y,hold1.y,hold1.u,sample1.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (12): * Single equations (assignments): 12 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0001717/0.1557, allocations: 145.7 kB / 432 MB, free: 14.71 MB / 366.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001825/0.1559, allocations: 101.6 kB / 432.1 MB, free: 14.61 MB / 366.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 6.238e-05/0.156, allocations: 20.7 kB / 432.1 MB, free: 14.58 MB / 366.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.605e-06/0.156, allocations: 0 / 432.1 MB, free: 14.58 MB / 366.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.147e-06/0.156, allocations: 4 kB / 432.1 MB, free: 14.58 MB / 366.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.218e-06/0.156, allocations: 4 kB / 432.1 MB, free: 14.57 MB / 366.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0002888/0.1563, allocations: 205.4 kB / 432.3 MB, free: 14.32 MB / 366.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.873e-06/0.1563, allocations: 0 / 432.3 MB, free: 14.32 MB / 366.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001167/0.1564, allocations: 23.98 kB / 432.4 MB, free: 14.3 MB / 366.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 2.425e-06/0.1564, allocations: 0 / 432.4 MB, free: 14.3 MB / 366.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.231e-05/0.1564, allocations: 7.938 kB / 432.4 MB, free: 14.29 MB / 366.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.563e-06/0.1564, allocations: 0 / 432.4 MB, free: 14.29 MB / 366.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.293e-06/0.1564, allocations: 3.938 kB / 432.4 MB, free: 14.29 MB / 366.1 MB [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/BackendDAETransform.mo:332:7-332:48:writable] Error: Internal error BackendDAETransform.analyseStrongComponentBlock failed (Purely discrete algebraic loops cannot be solved by iterative processes. Try to break them open using the delay() operator.) sum1.y sum2.u[2] sum2.y hold1.u hold1.y sample2.y sum1.u[2] sum1.y = sum1.k[1] * sum1.u[1] + sum1.k[2] * sum1.u[2] sum1.u[2] = sample2.y sample2.y = $getPart(hold1.y) hold1.y = $getPart(hold1.u) hold1.u = sum2.y sum2.y = sum2.k[1] * sum2.u[1] + sum2.k[2] * sum2.u[2] sum2.u[2] = sum1.y [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/BackendDAETransform.mo:342:7-342:48:writable] Error: Internal error BackendDAETransform.analyseStrongComponentBlock failed variables: sum1.y sum2.u[2] sum2.y hold1.u hold1.y sample2.y sum1.u[2] equations: sum1.y = sum1.k[1] * sum1.u[1] + sum1.k[2] * sum1.u[2] sum1.u[2] = sample2.y sample2.y = $getPart(hold1.y) hold1.y = $getPart(hold1.u) hold1.u = sum2.y sum2.y = sum2.k[1] * sum2.u[1] + sum2.k[2] * sum2.u[2] sum2.u[2] = sum1.y [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/BackendDAETransform.mo:346:7-346:90:writable] Error: Internal error function analyseStrongComponentBlock failed [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/BackendDAETransform.mo:196:5-196:89:writable] Error: Internal error function analyseStrongComponentScalar failed [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/BackendDAETransform.mo:107:7-107:113:writable] Error: Internal error function strongComponentsScalar failed (sorting strong components) [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/BackendDAEUtil.mo:8012:5-8012:89:writable] Error: Internal error Transformation module sort components failed Warning: The optimization module detectJacobianSparsePattern failed. This module will be skipped and the transformation process continued. Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0005441/0.1569, allocations: 376.9 kB / 432.8 MB, free: 13.9 MB / 366.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0001064/0.157, allocations: 105 kB / 432.9 MB, free: 13.78 MB / 366.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.997e-05/0.1571, allocations: 4 kB / 432.9 MB, free: 13.78 MB / 366.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001126/0.1572, allocations: 8 kB / 432.9 MB, free: 13.77 MB / 366.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.487e-05/0.1572, allocations: 7.969 kB / 432.9 MB, free: 13.76 MB / 366.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.506e-06/0.1572, allocations: 4 kB / 432.9 MB, free: 13.76 MB / 366.1 MB Notification: Performance of sorting global known variables: time 0.0001144/0.1573, allocations: 115.2 kB / 433 MB, free: 13.64 MB / 366.1 MB Notification: Performance of sort global known variables: time 8e-08/0.1573, allocations: 7.938 kB / 433 MB, free: 13.64 MB / 366.1 MB Notification: Performance of remove unused functions: time 0.0002994/0.1576, allocations: 12 kB / 433 MB, free: 13.62 MB / 366.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 0 () * Number of discrete variables: 12 (sample1.u,hold1.y,sample1.y,hold1.u,sample2.y,sum1.u[1],sum1.u[2],sum1.y,sum2.u[1],sum2.u[2],sum2.y,integerConstant.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (12): * Single equations (assignments): 12 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0001743/0.1578, allocations: 103.2 kB / 433.1 MB, free: 13.52 MB / 366.1 MB Notification: Performance of simCode: created initialization part: time 0.0002686/0.1581, allocations: 87.77 kB / 433.2 MB, free: 13.43 MB / 366.1 MB Notification: Performance of simCode: created event and clocks part: time 2.955e-06/0.1581, allocations: 0 / 433.2 MB, free: 13.43 MB / 366.1 MB Notification: Performance of simCode: created simulation system equations: time 4.789e-05/0.1581, allocations: 7.984 kB / 433.2 MB, free: 13.42 MB / 366.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004983/0.1586, allocations: 72.7 kB / 433.3 MB, free: 13.35 MB / 366.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0005522/0.1592, allocations: 255.5 kB / 433.5 MB, free: 13.07 MB / 366.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004257/0.1596, allocations: 0.7041 MB / 434.2 MB, free: 12.34 MB / 366.1 MB Notification: Performance of simCode: alias equations: time 3.263e-05/0.1597, allocations: 8.547 kB / 434.2 MB, free: 12.33 MB / 366.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 3.63e-05/0.1597, allocations: 15.44 kB / 434.3 MB, free: 12.31 MB / 366.1 MB Notification: Performance of SimCode: time 3.01e-07/0.1597, allocations: 0 / 434.3 MB, free: 12.31 MB / 366.1 MB Notification: Performance of Templates: time 0.004186/0.1639, allocations: 0.9512 MB / 435.2 MB, free: 11.37 MB / 366.1 MB " [Timeout remaining time 660] make -j1 -f Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2.makefile [Timeout 660] (rm -f Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2.pipe ; mkfifo Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2.pipe ; head -c 1048576 < Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2.pipe >> ../files/Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2.sim & ./Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2 -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2.pipe 2>&1) [Timeout 480] diffSimulationResults("Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.1.0/Modelica/Clocked/Examples/Elementary/IntegerSignals/Sample2/Sample2.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Modelica_4.1.0_Modelica.Clocked.Examples.Elementary.IntegerSignals.Sample2.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "" [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 5.227823298424482]