Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo", uses=false) Using package OpenIPSL with version 3.1.0-dev (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/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) 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) Running command: translateModel(OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=200000,variableFilter="",fileNamePrefix="OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1") translateModel(OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=200000,variableFilter="",fileNamePrefix="OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001562/0.001563, allocations: 175.9 kB / 15.78 MB, free: 6.352 MB / 13.93 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.57/1.57, allocations: 223.2 MB / 239.8 MB, free: 15.97 MB / 202.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.000734/0.000734, allocations: 98 kB / 290.9 MB, free: 4.645 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo): time 0.5236/0.5236, allocations: 78.62 MB / 420.7 MB, free: 36.48 MB / 346.7 MB Notification: Performance of FrontEnd - loaded program: time 0.0003941/0.0003941, allocations: 12 kB / 0.4888 GB, free: 7.234 MB / 362.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1605/0.161, allocations: 69.36 MB / 0.5565 GB, free: 1.816 MB / 426.7 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1): time 0.005213/0.1662, allocations: 4.782 MB / 0.5612 GB, free: 13.01 MB / 442.7 MB Notification: Performance of NFInst.instExpressions: time 0.003175/0.1694, allocations: 1.678 MB / 0.5628 GB, free: 11.33 MB / 442.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003247/0.1698, allocations: 8 kB / 0.5629 GB, free: 11.32 MB / 442.7 MB Notification: Performance of NFTyping.typeComponents: time 0.0003193/0.1701, allocations: 123.1 kB / 0.563 GB, free: 11.2 MB / 442.7 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/Electrical/Branches/PSAT/TwoWindingTransformer.mo:44:3-44:83:writable] Warning: In relation twoWindingTransformer.m <> 1.0, <> on Real numbers is only allowed inside functions. Notification: Performance of NFTyping.typeBindings: time 0.001268/0.1714, allocations: 0.5246 MB / 0.5635 GB, free: 10.68 MB / 442.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.0008231/0.1722, allocations: 390.6 kB / 0.5639 GB, free: 10.3 MB / 442.7 MB Notification: Performance of NFFlatten.flatten: time 0.001095/0.1733, allocations: 1.066 MB / 0.5649 GB, free: 9.227 MB / 442.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0003333/0.1737, allocations: 190.8 kB / 0.5651 GB, free: 9.016 MB / 442.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0004597/0.1741, allocations: 402.2 kB / 0.5655 GB, free: 8.621 MB / 442.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0006201/0.1748, allocations: 0.5134 MB / 0.566 GB, free: 8.105 MB / 442.7 MB Notification: Performance of NFPackage.collectConstants: time 0.0001065/0.1749, allocations: 48 kB / 0.566 GB, free: 8.059 MB / 442.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0003681/0.1753, allocations: 175.8 kB / 0.5662 GB, free: 7.887 MB / 442.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0001615/0.1754, allocations: 183.1 kB / 0.5664 GB, free: 7.707 MB / 442.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0001608/0.1756, allocations: 177.2 kB / 0.5665 GB, free: 7.527 MB / 442.7 MB Notification: Performance of NFConvertDAE.convert: time 0.001034/0.1766, allocations: 1.095 MB / 0.5676 GB, free: 6.43 MB / 442.7 MB Notification: Performance of FrontEnd - DAE generated: time 5.34e-06/0.1767, allocations: 8 kB / 0.5676 GB, free: 6.422 MB / 442.7 MB Notification: Performance of FrontEnd: time 3.387e-06/0.1767, allocations: 3.984 kB / 0.5676 GB, free: 6.418 MB / 442.7 MB Notification: Performance of Transformations before backend: time 1.198e-05/0.1767, allocations: 0 / 0.5676 GB, free: 6.418 MB / 442.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 132 * Number of variables: 132 Notification: Performance of Generate backend data structure: time 0.005308/0.182, allocations: 1.718 MB / 0.5693 GB, free: 4.648 MB / 442.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.06e-05/0.182, allocations: 8.031 kB / 0.5693 GB, free: 4.641 MB / 442.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003291/0.1853, allocations: 0.5296 MB / 0.5698 GB, free: 4.109 MB / 442.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001054/0.1864, allocations: 0.6476 MB / 0.5704 GB, free: 3.418 MB / 442.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002011/0.1866, allocations: 150.4 kB / 0.5706 GB, free: 3.254 MB / 442.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00013/0.1868, allocations: 67.89 kB / 0.5706 GB, free: 3.188 MB / 442.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001689/0.1885, allocations: 0.8227 MB / 0.5714 GB, free: 2.352 MB / 442.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.352e-05/0.1885, allocations: 0 / 0.5714 GB, free: 2.352 MB / 442.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.63e-05/0.1886, allocations: 24 kB / 0.5715 GB, free: 2.328 MB / 442.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.405e-05/0.1886, allocations: 12 kB / 0.5715 GB, free: 2.316 MB / 442.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0015/0.1901, allocations: 0.7274 MB / 0.5722 GB, free: 1.59 MB / 442.7 MB 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 0.3039/0.494, allocations: 2.937 MB / 0.5751 GB, free: 43.91 MB / 442.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01409/0.5082, allocations: 3.951 MB / 0.5789 GB, free: 43.64 MB / 442.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.001238/0.5094, allocations: 0.5269 MB / 0.5794 GB, free: 43.63 MB / 442.7 MB Notification: Performance of preOpt evalFunc (simulation): time 8.045e-05/0.5095, allocations: 9.625 kB / 0.5794 GB, free: 43.63 MB / 442.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.464e-05/0.5095, allocations: 38.44 kB / 0.5795 GB, free: 43.59 MB / 442.7 MB Notification: Performance of pre-optimization done (n=64): time 1.774e-06/0.5096, allocations: 0 / 0.5795 GB, free: 43.59 MB / 442.7 MB Notification: Performance of matching and sorting (n=64): time 0.01446/0.524, allocations: 4.358 MB / 0.5837 GB, free: 43.09 MB / 442.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.965e-05/0.5241, allocations: 83.52 kB / 0.5838 GB, free: 42.99 MB / 442.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001234/0.5254, allocations: 0.7818 MB / 0.5846 GB, free: 42.87 MB / 442.7 MB Notification: Performance of collectPreVariables (initialization): time 0.0001694/0.5255, allocations: 40.42 kB / 0.5846 GB, free: 42.84 MB / 442.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002621/0.5258, allocations: 376.1 kB / 0.585 GB, free: 42.71 MB / 442.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0002273/0.526, allocations: 239.2 kB / 0.5852 GB, free: 42.59 MB / 442.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 6.771e-05/0.5261, allocations: 17.16 kB / 0.5852 GB, free: 42.59 MB / 442.7 MB Notification: Performance of setup shared object (initialization): time 0.0001038/0.5262, allocations: 348.1 kB / 0.5856 GB, free: 42.28 MB / 442.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001168/0.5274, allocations: 0.5777 MB / 0.5861 GB, free: 42.27 MB / 442.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001347/0.5288, allocations: 0.6931 MB / 0.5868 GB, free: 42.19 MB / 442.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001203/0.53, allocations: 0.6348 MB / 0.5874 GB, free: 42.17 MB / 442.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.94e-06/0.53, allocations: 1.969 kB / 0.5874 GB, free: 42.17 MB / 442.7 MB Notification: Performance of matching and sorting (n=125) (initialization): time 0.008384/0.5384, allocations: 2.867 MB / 0.5902 GB, free: 41.93 MB / 442.7 MB Notification: Performance of prepare postOptimizeDAE: time 8.89e-05/0.5385, allocations: 142.1 kB / 0.5903 GB, free: 41.79 MB / 442.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.878e-06/0.5385, allocations: 1.656 kB / 0.5904 GB, free: 41.79 MB / 442.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.005221/0.5437, allocations: 1.257 MB / 0.5916 GB, free: 41.7 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001086/0.5449, allocations: 168.3 kB / 0.5917 GB, free: 41.7 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01113/0.556, allocations: 5.381 MB / 0.597 GB, free: 39.4 MB / 442.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001414/0.5575, allocations: 144.3 kB / 0.5971 GB, free: 39.34 MB / 442.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.468e-05/0.5576, allocations: 33.14 kB / 0.5972 GB, free: 39.33 MB / 442.7 MB Notification: Performance of prepare postOptimizeDAE: time 1.484e-05/0.5576, allocations: 6.062 kB / 0.5972 GB, free: 39.33 MB / 442.7 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.007594/0.5652, allocations: 2.738 MB / 0.5998 GB, free: 38.57 MB / 442.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.095e-05/0.5652, allocations: 0 / 0.5998 GB, free: 38.57 MB / 442.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.004539/0.5698, allocations: 1.261 MB / 0.6011 GB, free: 38.34 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009452/0.5707, allocations: 167.2 kB / 0.6012 GB, free: 38.32 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0106/0.5813, allocations: 5.372 MB / 0.6065 GB, free: 35.57 MB / 442.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001336/0.5827, allocations: 128.2 kB / 0.6066 GB, free: 35.52 MB / 442.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001689/0.5829, allocations: 32.8 kB / 0.6066 GB, free: 35.51 MB / 442.7 MB Warning: Assuming fixed start value for the following 2 variables: G1.aVRtypeIII.vref:VARIABLE(unit = "1" fixed = true protected = true ) type: Real G1.order6.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 7 * 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 (103): * Single equations (assignments): 100 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 2 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 2 {(2,100.0%),(2,100.0%)} * Non-linear Jacobian: 0 * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {8 13} Notification: Performance of prepare postOptimizeDAE: time 0.0005986/0.5835, allocations: 310.3 kB / 0.6069 GB, free: 35.24 MB / 442.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002244/0.5837, allocations: 87.31 kB / 0.607 GB, free: 35.19 MB / 442.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006659/0.5904, allocations: 2.39 MB / 0.6093 GB, free: 34.54 MB / 442.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.977e-06/0.5904, allocations: 6.641 kB / 0.6094 GB, free: 34.54 MB / 442.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.56e-05/0.5904, allocations: 9.781 kB / 0.6094 GB, free: 34.54 MB / 442.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.533e-05/0.5905, allocations: 7.375 kB / 0.6094 GB, free: 34.54 MB / 442.7 MB 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 postOpt removeSimpleEquations (simulation): time 0.008796/0.5993, allocations: 3.684 MB / 0.613 GB, free: 33.11 MB / 442.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.471e-06/0.5993, allocations: 1.5 kB / 0.613 GB, free: 33.11 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005964/0.5999, allocations: 85.47 kB / 0.613 GB, free: 33.1 MB / 442.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.003617/0.6035, allocations: 1.084 MB / 0.6141 GB, free: 32.89 MB / 442.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001354/0.6037, allocations: 14.59 kB / 0.6141 GB, free: 32.89 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.009343/0.6131, allocations: 4.138 MB / 0.6182 GB, free: 30.61 MB / 442.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.097e-06/0.6131, allocations: 1.188 kB / 0.6182 GB, free: 30.61 MB / 442.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.008671/0.6218, allocations: 3.068 MB / 0.6212 GB, free: 29.61 MB / 442.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0004526/0.6223, allocations: 185.4 kB / 0.6213 GB, free: 29.44 MB / 442.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003032/0.6226, allocations: 16.03 kB / 0.6214 GB, free: 29.43 MB / 442.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001098/0.6237, allocations: 87.41 kB / 0.6214 GB, free: 29.41 MB / 442.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004684/0.6242, allocations: 117.8 kB / 0.6215 GB, free: 29.4 MB / 442.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.108e-05/0.6243, allocations: 17.14 kB / 0.6216 GB, free: 29.39 MB / 442.7 MB Notification: Performance of sorting global known variables: time 0.00101/0.6253, allocations: 0.5295 MB / 0.6221 GB, free: 29.15 MB / 442.7 MB Notification: Performance of sort global known variables: time 2.21e-07/0.6253, allocations: 0 / 0.6221 GB, free: 29.15 MB / 442.7 MB Notification: Performance of remove unused functions: time 0.002318/0.6277, allocations: 0.5239 MB / 0.6226 GB, free: 29.07 MB / 442.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 9 (G1.order6.delta,G1.order6.w,G1.order6.e1q,G1.order6.e1d,G1.order6.e2q,G1.order6.e2d,G1.aVRtypeIII.vm,G1.aVRtypeIII.vr,G1.aVRtypeIII.vf1) * 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 (47): * Single equations (assignments): 44 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 2 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 2 {(2,100.0%),(2,100.0%)} * Non-linear Jacobian: 0 * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(9,48.1%) 9} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0002968/0.628, allocations: 131.3 kB / 0.6227 GB, free: 28.97 MB / 442.7 MB Notification: Performance of simCode: created initialization part: time 0.009647/0.6376, allocations: 3.565 MB / 0.6262 GB, free: 27.38 MB / 442.7 MB Notification: Performance of simCode: created event and clocks part: time 9.308e-06/0.6377, allocations: 2.062 kB / 0.6262 GB, free: 27.38 MB / 442.7 MB Notification: Performance of simCode: created simulation system equations: time 0.004629/0.6423, allocations: 1.256 MB / 0.6274 GB, free: 26.79 MB / 442.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001038/0.6434, allocations: 79.73 kB / 0.6275 GB, free: 26.74 MB / 442.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004176/0.6476, allocations: 2.187 MB / 0.6296 GB, free: 25.47 MB / 442.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005591/0.6482, allocations: 0.9762 MB / 0.6306 GB, free: 24.76 MB / 442.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000405/0.6486, allocations: 56.66 kB / 0.6306 GB, free: 24.75 MB / 442.7 MB Notification: Performance of SimCode: time 7.61e-07/0.6486, allocations: 0 / 0.6306 GB, free: 24.75 MB / 442.7 MB Notification: Performance of Templates: time 0.02987/0.6785, allocations: 22.71 MB / 0.6528 GB, free: 5.418 MB / 442.7 MB make -j1 -f OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1.makefile (rm -f OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1.pipe ; mkfifo OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1.pipe ; head -c 1048576 < OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1.pipe >> ../files/OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1.sim & ./OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1 -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_release_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_1.Network1.pipe 2>&1)