Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2.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 0.0008874/0.0008874, allocations: 80.48 kB / 19.93 MB, free: 4.629 MB / 18.57 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 0.00106/0.00106, allocations: 173.9 kB / 23.21 MB, free: 1.352 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 0.9116/0.9116, allocations: 177.1 MB / 203.5 MB, free: 5.723 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/package.mo): time 0.5679/0.5679, allocations: 114.9 MB / 374.9 MB, free: 7.727 MB / 346.7 MB " [Timeout remaining time 179] Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA master/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(IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_BaseClasses_FlowModels_Validation_PowerLaw_dp_DerivativeCheck2",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_BaseClasses_FlowModels_Validation_PowerLaw_dp_DerivativeCheck2",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.493e-06/1.493e-06, allocations: 0 / 0.5559 GB, free: 0.9375 MB / 0.5105 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.981e-05/2.13e-05, allocations: 6.219 kB / 0.5559 GB, free: 0.9297 MB / 0.5105 GB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2): time 0.001711/0.001732, allocations: 1.359 MB / 0.5572 GB, free: 15.56 MB / 0.5261 GB Notification: Performance of NFInst.instExpressions: time 0.0008826/0.002615, allocations: 0.8638 MB / 0.5581 GB, free: 14.7 MB / 0.5261 GB Notification: Performance of NFInst.updateImplicitVariability: time 3.567e-05/0.002651, allocations: 0 / 0.5581 GB, free: 14.7 MB / 0.5261 GB Notification: Performance of NFTyping.typeComponents: time 1.922e-05/0.00267, allocations: 7.938 kB / 0.5581 GB, free: 14.69 MB / 0.5261 GB Notification: Performance of NFTyping.typeBindings: time 4.756e-05/0.002717, allocations: 11.86 kB / 0.5581 GB, free: 14.68 MB / 0.5261 GB Notification: Performance of NFTyping.typeClassSections: time 0.0005377/0.003255, allocations: 222.8 kB / 0.5583 GB, free: 14.46 MB / 0.5261 GB Notification: Performance of NFFlatten.flatten: time 8.587e-05/0.003341, allocations: 51.78 kB / 0.5583 GB, free: 14.41 MB / 0.5261 GB Notification: Performance of NFFlatten.resolveConnections: time 4.068e-05/0.003382, allocations: 4 kB / 0.5583 GB, free: 14.4 MB / 0.5261 GB Notification: Performance of NFEvalConstants.evaluate: time 5.22e-05/0.003434, allocations: 35.89 kB / 0.5584 GB, free: 14.37 MB / 0.5261 GB Notification: Performance of NFSimplifyModel.simplify: time 5.28e-05/0.003487, allocations: 15.98 kB / 0.5584 GB, free: 14.35 MB / 0.5261 GB Notification: Performance of NFPackage.collectConstants: time 1.43e-05/0.003501, allocations: 7.938 kB / 0.5584 GB, free: 14.34 MB / 0.5261 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0005197/0.004021, allocations: 379.4 kB / 0.5588 GB, free: 13.97 MB / 0.5261 GB Notification: Performance of NFScalarize.scalarize: time 1.919e-05/0.00404, allocations: 15.92 kB / 0.5588 GB, free: 13.96 MB / 0.5261 GB Notification: Performance of NFVerifyModel.verify: time 2.469e-05/0.004064, allocations: 11.98 kB / 0.5588 GB, free: 13.95 MB / 0.5261 GB Notification: Performance of NFConvertDAE.convert: time 0.0003074/0.004372, allocations: 315 kB / 0.5591 GB, free: 13.64 MB / 0.5261 GB Notification: Performance of FrontEnd - DAE generated: time 2.926e-06/0.004375, allocations: 3.938 kB / 0.5591 GB, free: 13.63 MB / 0.5261 GB Notification: Performance of FrontEnd: time 1.373e-06/0.004376, allocations: 0 / 0.5591 GB, free: 13.63 MB / 0.5261 GB Notification: Performance of Transformations before backend: time 4.668e-06/0.004381, allocations: 0 / 0.5591 GB, free: 13.63 MB / 0.5261 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 7 * Number of variables: 7 Notification: Performance of Generate backend data structure: time 0.0003971/0.004778, allocations: 353.3 kB / 0.5594 GB, free: 13.26 MB / 0.5261 GB Notification: Performance of prepare preOptimizeDAE: time 4.288e-05/0.004821, allocations: 8.031 kB / 0.5594 GB, free: 13.25 MB / 0.5261 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 3.29e-05/0.004854, allocations: 38.75 kB / 0.5595 GB, free: 13.2 MB / 0.5261 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001709/0.005025, allocations: 24.86 kB / 0.5595 GB, free: 13.18 MB / 0.5261 GB Notification: Performance of preOpt evaluateParameters (simulation): time 8.042e-05/0.005105, allocations: 109.8 kB / 0.5596 GB, free: 13.05 MB / 0.5261 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.257e-05/0.005128, allocations: 8.312 kB / 0.5596 GB, free: 13.04 MB / 0.5261 GB Notification: Performance of preOpt expandDerOperator (simulation): time 2.171e-05/0.005149, allocations: 8.359 kB / 0.5596 GB, free: 13.03 MB / 0.5261 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.000155/0.005304, allocations: 117.4 kB / 0.5597 GB, free: 12.9 MB / 0.5261 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.091e-05/0.005315, allocations: 0 / 0.5597 GB, free: 12.9 MB / 0.5261 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.051e-05/0.005326, allocations: 0 / 0.5597 GB, free: 12.9 MB / 0.5261 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.679e-06/0.00533, allocations: 0 / 0.5597 GB, free: 12.9 MB / 0.5261 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 8.467e-05/0.005415, allocations: 35.97 kB / 0.5598 GB, free: 12.86 MB / 0.5261 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0001395/0.005555, allocations: 152.6 kB / 0.5599 GB, free: 12.67 MB / 0.5261 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0001579/0.005712, allocations: 78.48 kB / 0.56 GB, free: 12.59 MB / 0.5261 GB Notification: Performance of preOpt resolveLoops (simulation): time 5.909e-05/0.005772, allocations: 36.83 kB / 0.56 GB, free: 12.55 MB / 0.5261 GB Notification: Performance of preOpt evalFunc (simulation): time 1.463e-05/0.005786, allocations: 4 kB / 0.56 GB, free: 12.54 MB / 0.5261 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.069e-05/0.005807, allocations: 34.73 kB / 0.5601 GB, free: 12.5 MB / 0.5261 GB Notification: Performance of pre-optimization done (n=7): time 9.22e-07/0.005808, allocations: 0 / 0.5601 GB, free: 12.5 MB / 0.5261 GB Warning: Some equations could not be differentiated for following variables having attribute stateSelect=StateSelect.prefer. They will be treated as if they had stateSelect=StateSelect.default ======================================== 1: dp Please use -d=bltdump for more information. Notification: Performance of matching and sorting (n=11): time 0.00284/0.008648, allocations: 0.9813 MB / 0.561 GB, free: 11.47 MB / 0.5261 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.637e-05/0.008674, allocations: 51.41 kB / 0.5611 GB, free: 11.41 MB / 0.5261 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 8.252e-05/0.008756, allocations: 121.8 kB / 0.5612 GB, free: 11.28 MB / 0.5261 GB Notification: Performance of collectPreVariables (initialization): time 1.808e-05/0.008775, allocations: 25.7 kB / 0.5612 GB, free: 11.25 MB / 0.5261 GB Notification: Performance of collectInitialEqns (initialization): time 3.004e-05/0.008805, allocations: 88.42 kB / 0.5613 GB, free: 11.15 MB / 0.5261 GB Notification: Performance of collectInitialBindings (initialization): time 3.651e-05/0.008841, allocations: 39.64 kB / 0.5613 GB, free: 11.11 MB / 0.5261 GB Notification: Performance of simplifyInitialFunctions (initialization): time 6.26e-05/0.008904, allocations: 41.69 kB / 0.5614 GB, free: 11.07 MB / 0.5261 GB Notification: Performance of setup shared object (initialization): time 7.131e-05/0.008975, allocations: 322.8 kB / 0.5617 GB, free: 10.74 MB / 0.5261 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001521/0.009127, allocations: 91.94 kB / 0.5618 GB, free: 10.65 MB / 0.5261 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001414/0.009268, allocations: 95.89 kB / 0.5618 GB, free: 10.56 MB / 0.5261 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002822/0.009551, allocations: 192.3 kB / 0.562 GB, free: 10.37 MB / 0.5261 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.92e-07/0.009552, allocations: 96 / 0.562 GB, free: 10.37 MB / 0.5261 GB Notification: Performance of matching and sorting (n=22) (initialization): time 0.0003633/0.009915, allocations: 256.1 kB / 0.5623 GB, free: 10.12 MB / 0.5261 GB Notification: Performance of prepare postOptimizeDAE: time 1.583e-05/0.009931, allocations: 8 kB / 0.5623 GB, free: 10.11 MB / 0.5261 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.424e-05/0.009945, allocations: 0 / 0.5623 GB, free: 10.11 MB / 0.5261 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.307e-05/0.009958, allocations: 0 / 0.5623 GB, free: 10.11 MB / 0.5261 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001492/0.01011, allocations: 43.95 kB / 0.5623 GB, free: 10.07 MB / 0.5261 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 5.56e-06/0.01011, allocations: 3.938 kB / 0.5623 GB, free: 10.06 MB / 0.5261 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 7.656e-05/0.01019, allocations: 12 kB / 0.5623 GB, free: 10.05 MB / 0.5261 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.499e-05/0.0102, allocations: 7.984 kB / 0.5623 GB, free: 10.04 MB / 0.5261 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * 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 (14): * Single equations (assignments): 13 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 1 * 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 7.137e-05/0.01028, allocations: 109.8 kB / 0.5625 GB, free: 9.926 MB / 0.5261 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 1.955e-05/0.0103, allocations: 11.89 kB / 0.5625 GB, free: 9.914 MB / 0.5261 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 3.795e-05/0.01033, allocations: 16.42 kB / 0.5625 GB, free: 9.898 MB / 0.5261 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.854e-06/0.01034, allocations: 4 kB / 0.5625 GB, free: 9.895 MB / 0.5261 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.958e-06/0.01034, allocations: 0 / 0.5625 GB, free: 9.895 MB / 0.5261 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.785e-06/0.01034, allocations: 4 kB / 0.5625 GB, free: 9.891 MB / 0.5261 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0005627/0.0109, allocations: 425.4 kB / 0.5629 GB, free: 9.426 MB / 0.5261 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.685e-06/0.01091, allocations: 3.984 kB / 0.5629 GB, free: 9.422 MB / 0.5261 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001357/0.01104, allocations: 27.97 kB / 0.5629 GB, free: 9.395 MB / 0.5261 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.895e-06/0.01105, allocations: 7.938 kB / 0.5629 GB, free: 9.387 MB / 0.5261 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.437e-05/0.01106, allocations: 7.984 kB / 0.5629 GB, free: 9.379 MB / 0.5261 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.783e-06/0.01106, allocations: 0 / 0.5629 GB, free: 9.379 MB / 0.5261 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.282e-06/0.01106, allocations: 0 / 0.5629 GB, free: 9.379 MB / 0.5261 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004961/0.01156, allocations: 367.2 kB / 0.5633 GB, free: 9.004 MB / 0.5261 GB Notification: Performance of postOpt removeConstants (simulation): time 9.157e-06/0.01157, allocations: 7.938 kB / 0.5633 GB, free: 8.996 MB / 0.5261 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 2.909e-05/0.0116, allocations: 8.031 kB / 0.5633 GB, free: 8.988 MB / 0.5261 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000101/0.0117, allocations: 7.984 kB / 0.5633 GB, free: 8.98 MB / 0.5261 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 2.704e-05/0.01173, allocations: 11.97 kB / 0.5633 GB, free: 8.969 MB / 0.5261 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.223e-05/0.01174, allocations: 8 kB / 0.5633 GB, free: 8.961 MB / 0.5261 GB Notification: Performance of sorting global known variables: time 3.391e-05/0.01177, allocations: 95.09 kB / 0.5634 GB, free: 8.871 MB / 0.5261 GB Notification: Performance of sort global known variables: time 8e-08/0.01177, allocations: 8 kB / 0.5634 GB, free: 8.863 MB / 0.5261 GB Notification: Performance of remove unused functions: time 0.0002043/0.01198, allocations: 36 kB / 0.5635 GB, free: 8.828 MB / 0.5261 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 2 (m_flow_comp,der_m_flow_comp) * 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 (11): * Single equations (assignments): 11 * 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 0.0007602/0.01274, allocations: 0.9113 MB / 0.5644 GB, free: 7.891 MB / 0.5261 GB Notification: Performance of simCode: created initialization part: time 0.0003668/0.0131, allocations: 209.5 kB / 0.5646 GB, free: 7.68 MB / 0.5261 GB Notification: Performance of simCode: created event and clocks part: time 2.014e-06/0.01311, allocations: 4.062 kB / 0.5646 GB, free: 7.676 MB / 0.5261 GB Notification: Performance of simCode: created simulation system equations: time 0.0001309/0.01324, allocations: 75.89 kB / 0.5646 GB, free: 7.602 MB / 0.5261 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002659/0.0135, allocations: 13 kB / 0.5646 GB, free: 7.59 MB / 0.5261 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00243/0.01593, allocations: 2.018 MB / 0.5666 GB, free: 5.48 MB / 0.5261 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 5.024e-05/0.01598, allocations: 83.27 kB / 0.5667 GB, free: 5.379 MB / 0.5261 GB Notification: Performance of simCode: alias equations: time 8.785e-05/0.01607, allocations: 20.72 kB / 0.5667 GB, free: 5.359 MB / 0.5261 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 8.35e-05/0.01615, allocations: 24.48 kB / 0.5667 GB, free: 5.336 MB / 0.5261 GB Notification: Performance of SimCode: time 6.31e-07/0.01615, allocations: 0 / 0.5667 GB, free: 5.336 MB / 0.5261 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.01972/0.03588, allocations: 4.285 MB / 0.5709 GB, free: 1.27 MB / 0.5261 GB Notification: Performance of buildModelFMU: Generate platform static: time 6.886/6.922, allocations: 7.594 kB / 0.5709 GB, free: 1.27 MB / 0.5261 GB " [Timeout remaining time 653] (rm -f IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_OMSimulator.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_OMSimulator.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_OMSimulator.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IBPSA_latest_IBPSA_Fluid_BaseClasses_FlowModels_Validation_PowerLaw_dp_DerivativeCheck2_OMSimulator_fmu --startTime=-2 --stopTime=2 --stepSize=0.0016 --timeout=50 --tolerance=1e-08 IBPSA_latest_IBPSA_Fluid_BaseClasses_FlowModels_Validation_PowerLaw_dp_DerivativeCheck2.fmu > IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_OMSimulator.pipe 2>&1) [Timeout 52.5] OMSimulator failed or timed out simulating the FMU; the other simulators still get to run it (rm -f IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_fmpy.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_fmpy.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_fmpy.pipe >> /var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_fmpy.sim & python3 -m fmpy simulate --output-file IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_fmpy_res.csv --start-time -2 --stop-time 2 --timeout 50 --relative-tolerance 1e-08 --interface-type ModelExchange --solver CVode --output-interval 0.0016 IBPSA_latest_IBPSA_Fluid_BaseClasses_FlowModels_Validation_PowerLaw_dp_DerivativeCheck2.fmu > IBPSA_latest_IBPSA.Fluid.BaseClasses.FlowModels.Validation.PowerLaw_dp_DerivativeCheck2_fmpy.pipe 2>&1) [Timeout 52.5] fmpy timed out simulating the FMU [Calling sys.exit(0), Time elapsed: 9.52110687601089]