Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.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/IDEAS 3.0.0/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) 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 IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity") translateModel(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00175/0.00175, allocations: 183 kB / 15.98 MB, free: 5.77 MB / 13.93 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7123/0.7123, allocations: 132.2 MB / 148.9 MB, free: 12.15 MB / 122.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.407/1.407, allocations: 222.9 MB / 403.3 MB, free: 7.078 MB / 314.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009825/0.0009825, allocations: 113.4 kB / 484.4 MB, free: 8.703 MB / 394.7 MB Notification: Performance of FrontEnd - loaded program: time 0.001014/0.001014, allocations: 51.92 kB / 0.5618 GB, free: 71.07 MB / 426.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1329/0.1339, allocations: 80.21 MB / 0.6402 GB, free: 6.789 MB / 442.7 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity): time 0.03292/0.1669, allocations: 31.58 MB / 0.671 GB, free: 7.09 MB / 474.7 MB Notification: Performance of NFInst.instExpressions: time 0.008625/0.1756, allocations: 5.374 MB / 0.6762 GB, free: 1.703 MB / 474.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.00115/0.1768, allocations: 35.81 kB / 0.6763 GB, free: 1.668 MB / 474.7 MB Notification: Performance of NFTyping.typeComponents: time 0.001205/0.178, allocations: 330.2 kB / 0.6766 GB, free: 1.344 MB / 474.7 MB Notification: Performance of NFTyping.typeBindings: time 0.003706/0.1817, allocations: 1.317 MB / 0.6779 GB, free: 24 kB / 474.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.002194/0.184, allocations: 0.7568 MB / 0.6786 GB, free: 15.27 MB / 490.7 MB Notification: Performance of NFFlatten.flatten: time 0.003214/0.1872, allocations: 2.857 MB / 0.6814 GB, free: 12.41 MB / 490.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0009837/0.1882, allocations: 0.5233 MB / 0.6819 GB, free: 11.87 MB / 490.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.001729/0.1899, allocations: 0.6923 MB / 0.6826 GB, free: 11.18 MB / 490.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.001063/0.191, allocations: 0.5599 MB / 0.6831 GB, free: 10.61 MB / 490.7 MB Notification: Performance of NFPackage.collectConstants: time 0.000127/0.1911, allocations: 28 kB / 0.6832 GB, free: 10.59 MB / 490.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.00237/0.1935, allocations: 1.15 MB / 0.6843 GB, free: 9.434 MB / 490.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0002537/0.1938, allocations: 143.4 kB / 0.6844 GB, free: 9.293 MB / 490.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0005985/0.1944, allocations: 366 kB / 0.6848 GB, free: 8.934 MB / 490.7 MB Notification: Performance of NFConvertDAE.convert: time 0.00325/0.1977, allocations: 1.469 MB / 0.6862 GB, free: 7.461 MB / 490.7 MB Notification: Performance of FrontEnd - DAE generated: time 8.015e-06/0.1977, allocations: 8 kB / 0.6862 GB, free: 7.453 MB / 490.7 MB Notification: Performance of FrontEnd: time 2.325e-06/0.1977, allocations: 0 / 0.6862 GB, free: 7.453 MB / 490.7 MB Notification: Performance of Transformations before backend: time 3.631e-05/0.1977, allocations: 3.938 kB / 0.6862 GB, free: 7.449 MB / 490.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 110 * Number of variables: 110 Notification: Performance of Generate backend data structure: time 0.002247/0.2, allocations: 1.086 MB / 0.6873 GB, free: 6.312 MB / 490.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.838e-05/0.2001, allocations: 8.031 kB / 0.6873 GB, free: 6.305 MB / 490.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002439/0.2025, allocations: 283.7 kB / 0.6876 GB, free: 6.027 MB / 490.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001635/0.2042, allocations: 0.6705 MB / 0.6882 GB, free: 5.312 MB / 490.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.169e-05/0.2042, allocations: 36.94 kB / 0.6883 GB, free: 5.273 MB / 490.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 9.905e-05/0.2043, allocations: 48 kB / 0.6883 GB, free: 5.227 MB / 490.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001062/0.2054, allocations: 0.5242 MB / 0.6888 GB, free: 4.664 MB / 490.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.74e-05/0.2054, allocations: 4 kB / 0.6888 GB, free: 4.66 MB / 490.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.778e-05/0.2055, allocations: 20 kB / 0.6888 GB, free: 4.641 MB / 490.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.457e-05/0.2055, allocations: 8 kB / 0.6888 GB, free: 4.633 MB / 490.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001051/0.2066, allocations: 359.7 kB / 0.6892 GB, free: 4.281 MB / 490.7 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 0.003376/0.21, allocations: 2.826 MB / 0.6919 GB, free: 1.223 MB / 490.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0005885/0.2106, allocations: 311.4 kB / 0.6922 GB, free: 0.9023 MB / 490.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002998/0.2109, allocations: 150 kB / 0.6924 GB, free: 0.75 MB / 490.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.2564/0.4673, allocations: 0.6505 MB / 0.693 GB, free: 60.1 MB / 490.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.408e-05/0.4674, allocations: 40.73 kB / 0.6931 GB, free: 60.06 MB / 490.7 MB Notification: Performance of pre-optimization done (n=28): time 2.946e-06/0.4674, allocations: 0 / 0.6931 GB, free: 60.06 MB / 490.7 MB Notification: Performance of matching and sorting (n=40): time 0.006676/0.4741, allocations: 2.084 MB / 0.6951 GB, free: 59.32 MB / 490.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 2.951e-05/0.4742, allocations: 82.5 kB / 0.6952 GB, free: 59.22 MB / 490.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000771/0.475, allocations: 0.5248 MB / 0.6957 GB, free: 58.98 MB / 490.7 MB Notification: Performance of collectPreVariables (initialization): time 3.307e-05/0.475, allocations: 38.48 kB / 0.6957 GB, free: 58.95 MB / 490.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0001874/0.4752, allocations: 323.3 kB / 0.696 GB, free: 58.7 MB / 490.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001054/0.4753, allocations: 142.8 kB / 0.6962 GB, free: 58.59 MB / 490.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001458/0.4755, allocations: 94.7 kB / 0.6963 GB, free: 58.54 MB / 490.7 MB Notification: Performance of setup shared object (initialization): time 9.404e-05/0.4756, allocations: 365.8 kB / 0.6966 GB, free: 58.2 MB / 490.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003839/0.4759, allocations: 175.4 kB / 0.6968 GB, free: 58.13 MB / 490.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004591/0.4764, allocations: 295 kB / 0.6971 GB, free: 57.93 MB / 490.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008656/0.4773, allocations: 466.7 kB / 0.6975 GB, free: 57.65 MB / 490.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.637e-06/0.4773, allocations: 1.125 kB / 0.6975 GB, free: 57.65 MB / 490.7 MB Notification: Performance of matching and sorting (n=55) (initialization): time 0.001898/0.4792, allocations: 0.734 MB / 0.6982 GB, free: 57.35 MB / 490.7 MB Notification: Performance of prepare postOptimizeDAE: time 2.084e-05/0.4792, allocations: 9.469 kB / 0.6982 GB, free: 57.35 MB / 490.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.207e-06/0.4793, allocations: 2.875 kB / 0.6982 GB, free: 57.35 MB / 490.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001054/0.4803, allocations: 281.9 kB / 0.6985 GB, free: 57.28 MB / 490.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002882/0.4806, allocations: 64.06 kB / 0.6986 GB, free: 57.27 MB / 490.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005824/0.4865, allocations: 4.31 MB / 0.7028 GB, free: 53.81 MB / 490.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001044/0.4875, allocations: 87.09 kB / 0.7029 GB, free: 53.79 MB / 490.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.163e-05/0.4876, allocations: 25.72 kB / 0.7029 GB, free: 53.79 MB / 490.7 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.000515/0.4881, allocations: 328.9 kB / 0.7032 GB, free: 53.6 MB / 490.7 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003872/0.4885, allocations: 289.2 kB / 0.7035 GB, free: 53.4 MB / 490.7 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007252/0.4892, allocations: 476 kB / 0.7039 GB, free: 53.12 MB / 490.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.585e-06/0.4892, allocations: 1.312 kB / 0.7039 GB, free: 53.12 MB / 490.7 MB Notification: Performance of matching and sorting (n=55) (initialization_lambda0): time 0.001734/0.491, allocations: 0.7331 MB / 0.7046 GB, free: 52.81 MB / 490.7 MB Notification: Performance of prepare postOptimizeDAE: time 9.689e-06/0.491, allocations: 9.094 kB / 0.7046 GB, free: 52.81 MB / 490.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.673e-06/0.491, allocations: 3.875 kB / 0.7047 GB, free: 52.81 MB / 490.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009321/0.492, allocations: 280.8 kB / 0.7049 GB, free: 52.73 MB / 490.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000254/0.4922, allocations: 68.22 kB / 0.705 GB, free: 52.73 MB / 490.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005237/0.4975, allocations: 4.317 MB / 0.7092 GB, free: 49.23 MB / 490.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001069/0.4985, allocations: 80.02 kB / 0.7093 GB, free: 49.22 MB / 490.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.222e-05/0.4986, allocations: 20.89 kB / 0.7093 GB, free: 49.21 MB / 490.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 14 * 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 (39): * Single equations (assignments): 37 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(2,8), (2,6)} Notification: Performance of prepare postOptimizeDAE: time 0.0001376/0.4987, allocations: 208 kB / 0.7095 GB, free: 49.01 MB / 490.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001446/0.4989, allocations: 65.86 kB / 0.7096 GB, free: 48.98 MB / 490.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00176/0.5007, allocations: 0.6618 MB / 0.7102 GB, free: 48.7 MB / 490.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.353e-06/0.5007, allocations: 4.312 kB / 0.7102 GB, free: 48.7 MB / 490.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.127e-06/0.5007, allocations: 1.703 kB / 0.7102 GB, free: 48.7 MB / 490.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001512/0.5022, allocations: 0.7482 MB / 0.7109 GB, free: 48.24 MB / 490.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003139/0.5054, allocations: 1.688 MB / 0.7126 GB, free: 47.34 MB / 490.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.548e-06/0.5054, allocations: 1.156 kB / 0.7126 GB, free: 47.34 MB / 490.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002336/0.5056, allocations: 60.38 kB / 0.7126 GB, free: 47.32 MB / 490.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009814/0.5066, allocations: 255.3 kB / 0.7129 GB, free: 47.25 MB / 490.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.879e-05/0.5067, allocations: 11.59 kB / 0.7129 GB, free: 47.25 MB / 490.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004681/0.5114, allocations: 3.933 MB / 0.7167 GB, free: 43.98 MB / 490.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.865e-06/0.5114, allocations: 1.781 kB / 0.7167 GB, free: 43.98 MB / 490.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01692/0.5283, allocations: 9.702 MB / 0.7262 GB, free: 37.42 MB / 490.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0002402/0.5286, allocations: 183.8 kB / 0.7264 GB, free: 37.25 MB / 490.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.669e-05/0.5286, allocations: 6.875 kB / 0.7264 GB, free: 37.24 MB / 490.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009648/0.5296, allocations: 73.66 kB / 0.7265 GB, free: 37.21 MB / 490.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001131/0.5297, allocations: 42.11 kB / 0.7265 GB, free: 37.18 MB / 490.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.622e-05/0.5298, allocations: 13.5 kB / 0.7265 GB, free: 37.18 MB / 490.7 MB Notification: Performance of sorting global known variables: time 0.000504/0.5303, allocations: 367.9 kB / 0.7269 GB, free: 36.96 MB / 490.7 MB Notification: Performance of sort global known variables: time 2.81e-07/0.5303, allocations: 0 / 0.7269 GB, free: 36.96 MB / 490.7 MB Notification: Performance of remove unused functions: time 0.002483/0.5328, allocations: 0.6245 MB / 0.7275 GB, free: 36.9 MB / 490.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 2 (vol.ports[1].h_outflow,vol1.ports[1].h_outflow) * 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 (28): * Single equations (assignments): 26 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(2,6), (2,4)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0007027/0.5335, allocations: 299.5 kB / 0.7278 GB, free: 36.75 MB / 490.7 MB Notification: Performance of simCode: created initialization part: time 0.003166/0.5367, allocations: 1.36 MB / 0.7291 GB, free: 35.81 MB / 490.7 MB Notification: Performance of simCode: created event and clocks part: time 2.986e-06/0.5367, allocations: 0 / 0.7291 GB, free: 35.81 MB / 490.7 MB Notification: Performance of simCode: created simulation system equations: time 0.001343/0.5381, allocations: 0.5449 MB / 0.7296 GB, free: 35.41 MB / 490.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001837/0.5399, allocations: 353.6 kB / 0.73 GB, free: 35.25 MB / 490.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003388/0.5433, allocations: 2.137 MB / 0.7321 GB, free: 33.64 MB / 490.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004606/0.5438, allocations: 0.9413 MB / 0.733 GB, free: 32.83 MB / 490.7 MB Notification: Performance of simCode: alias equations: time 0.0006974/0.5445, allocations: 136.1 kB / 0.7331 GB, free: 32.76 MB / 490.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001675/0.5447, allocations: 49.55 kB / 0.7332 GB, free: 32.75 MB / 490.7 MB Notification: Performance of SimCode: time 4.31e-07/0.5447, allocations: 0 / 0.7332 GB, free: 32.75 MB / 490.7 MB Notification: Performance of Templates: time 0.02614/0.5708, allocations: 20.53 MB / 0.7532 GB, free: 14.54 MB / 490.7 MB make -j1 -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.makefile (rm -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; mkfifo IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe >> ../files/IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.sim & ./IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe 2>&1)