Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe.conf.json 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/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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/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) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: translateModel(BuildingSystems.Fluid.FixedResistances.Examples.Pipe,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe") translateModel(BuildingSystems.Fluid.FixedResistances.Examples.Pipe,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001407/0.001407, allocations: 110.9 kB / 16.41 MB, free: 6.496 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001514/0.001514, allocations: 183 kB / 17.34 MB, free: 5.762 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.347/1.347, allocations: 222.9 MB / 241 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002175/0.002175, allocations: 287.8 kB / 291.5 MB, free: 14.46 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9673/0.9673, allocations: 169.3 MB / 0.499 GB, free: 4.445 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001892/0.001892, allocations: 91.84 kB / 0.6821 GB, free: 6.98 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4191/0.421, allocations: 86.97 MB / 0.767 GB, free: 3.957 MB / 0.5294 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.FixedResistances.Examples.Pipe): time 0.04613/0.4671, allocations: 46.51 MB / 0.8125 GB, free: 5.273 MB / 0.5762 GB Notification: Performance of NFInst.instExpressions: time 0.0172/0.4844, allocations: 11.88 MB / 0.8241 GB, free: 9.367 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.00231/0.4867, allocations: 67.62 kB / 0.8241 GB, free: 9.301 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.002138/0.4889, allocations: 0.7219 MB / 0.8248 GB, free: 8.574 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.006591/0.4955, allocations: 2.438 MB / 0.8272 GB, free: 6.125 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.00413/0.4997, allocations: 1.541 MB / 0.8287 GB, free: 4.594 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.00585/0.5055, allocations: 4.404 MB / 0.833 GB, free: 188 kB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002516/0.5081, allocations: 1.572 MB / 0.8345 GB, free: 14.57 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003761/0.5119, allocations: 1.618 MB / 0.8361 GB, free: 12.96 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001971/0.5139, allocations: 1.179 MB / 0.8373 GB, free: 11.77 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 0.0002748/0.5141, allocations: 148 kB / 0.8374 GB, free: 11.63 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003335/0.5175, allocations: 1.497 MB / 0.8389 GB, free: 10.13 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.0004051/0.5179, allocations: 398.6 kB / 0.8393 GB, free: 9.738 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.001038/0.519, allocations: 0.8748 MB / 0.8401 GB, free: 8.859 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.003744/0.5227, allocations: 2.858 MB / 0.8429 GB, free: 5.996 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 6.693e-06/0.5227, allocations: 4 kB / 0.8429 GB, free: 5.992 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.693e-06/0.5227, allocations: 4 kB / 0.8429 GB, free: 5.988 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 2.403e-05/0.5228, allocations: 0 / 0.8429 GB, free: 5.988 MB / 0.6075 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 224 * Number of variables: 224 Notification: Performance of Generate backend data structure: time 0.003822/0.5266, allocations: 2.075 MB / 0.8449 GB, free: 3.855 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 3.852e-05/0.5266, allocations: 11.97 kB / 0.8449 GB, free: 3.844 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0004987/0.5271, allocations: 186.6 kB / 0.8451 GB, free: 3.66 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003622/0.5308, allocations: 2.054 MB / 0.8471 GB, free: 1.551 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001068/0.5309, allocations: 99.7 kB / 0.8472 GB, free: 1.445 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001354/0.5311, allocations: 92 kB / 0.8473 GB, free: 1.355 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001928/0.533, allocations: 1.174 MB / 0.8485 GB, free: 152 kB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.723e-05/0.533, allocations: 11.89 kB / 0.8485 GB, free: 140 kB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.631e-05/0.5331, allocations: 40 kB / 0.8485 GB, free: 100 kB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.336e-05/0.5332, allocations: 23.94 kB / 0.8485 GB, free: 76 kB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001592/0.5348, allocations: 0.9094 MB / 0.8494 GB, free: 15.16 MB / 0.6231 GB 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 0.005857/0.5406, allocations: 4.668 MB / 0.854 GB, free: 10.21 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0009373/0.5416, allocations: 0.521 MB / 0.8545 GB, free: 9.68 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005099/0.5421, allocations: 320.5 kB / 0.8548 GB, free: 9.367 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0008197/0.5429, allocations: 0.9188 MB / 0.8557 GB, free: 8.246 MB / 0.6231 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.61e-05/0.543, allocations: 47.06 kB / 0.8557 GB, free: 8.188 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=56): time 2.224e-06/0.543, allocations: 0 / 0.8557 GB, free: 8.188 MB / 0.6231 GB Notification: Performance of matching and sorting (n=56): time 0.001771/0.5448, allocations: 0.8449 MB / 0.8566 GB, free: 7.34 MB / 0.6231 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.871e-05/0.5448, allocations: 59.97 kB / 0.8566 GB, free: 7.27 MB / 0.6231 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001557/0.5464, allocations: 1.251 MB / 0.8578 GB, free: 6.012 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 6.974e-05/0.5465, allocations: 37.7 kB / 0.8579 GB, free: 5.969 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004692/0.5469, allocations: 0.6024 MB / 0.8585 GB, free: 5.359 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001758/0.5471, allocations: 197.1 kB / 0.8587 GB, free: 5.164 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001864/0.5473, allocations: 130.2 kB / 0.8588 GB, free: 5.031 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.0001112/0.5474, allocations: 341.9 kB / 0.8591 GB, free: 4.691 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004553/0.5479, allocations: 247.3 kB / 0.8593 GB, free: 4.445 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000579/0.5485, allocations: 417.8 kB / 0.8597 GB, free: 3.973 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001023/0.5495, allocations: 0.6584 MB / 0.8604 GB, free: 3.266 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.536e-06/0.5495, allocations: 0 / 0.8604 GB, free: 3.266 MB / 0.6231 GB Notification: Performance of matching and sorting (n=77) (initialization): time 0.001455/0.551, allocations: 0.8098 MB / 0.8612 GB, free: 2.445 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.913e-05/0.551, allocations: 8 kB / 0.8612 GB, free: 2.438 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.267e-06/0.551, allocations: 4 kB / 0.8612 GB, free: 2.434 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.223e-05/0.5511, allocations: 8 kB / 0.8612 GB, free: 2.426 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008688/0.5519, allocations: 187.6 kB / 0.8614 GB, free: 2.242 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006731/0.5526, allocations: 1.188 MB / 0.8625 GB, free: 1.008 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000729/0.5534, allocations: 75.2 kB / 0.8626 GB, free: 0.9336 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.813e-05/0.5534, allocations: 35.98 kB / 0.8626 GB, free: 0.8984 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0009363/0.5544, allocations: 0.5987 MB / 0.8632 GB, free: 300 kB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005753/0.555, allocations: 418 kB / 0.8636 GB, free: 15.82 MB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001009/0.556, allocations: 0.6467 MB / 0.8643 GB, free: 15.12 MB / 0.6387 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.375e-06/0.556, allocations: 0 / 0.8643 GB, free: 15.12 MB / 0.6387 GB Notification: Performance of matching and sorting (n=77) (initialization_lambda0): time 0.001422/0.5574, allocations: 0.8017 MB / 0.865 GB, free: 14.31 MB / 0.6387 GB Notification: Performance of prepare postOptimizeDAE: time 1.507e-05/0.5575, allocations: 11.94 kB / 0.865 GB, free: 14.3 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.282e-06/0.5575, allocations: 4.219 kB / 0.865 GB, free: 14.29 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.067e-05/0.5575, allocations: 4 kB / 0.8651 GB, free: 14.29 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005658/0.558, allocations: 164.2 kB / 0.8652 GB, free: 14.13 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 9.628e-06/0.5581, allocations: 11.98 kB / 0.8652 GB, free: 14.12 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006692/0.5587, allocations: 55.58 kB / 0.8653 GB, free: 14.06 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.159e-05/0.5588, allocations: 31.98 kB / 0.8653 GB, free: 14.03 MB / 0.6387 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 18 * 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 (77): * Single equations (assignments): 75 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0002298/0.559, allocations: 220 kB / 0.8655 GB, free: 13.81 MB / 0.6387 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002273/0.5593, allocations: 134.3 kB / 0.8656 GB, free: 13.68 MB / 0.6387 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001694/0.561, allocations: 0.8587 MB / 0.8665 GB, free: 12.8 MB / 0.6387 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.806e-05/0.561, allocations: 11.98 kB / 0.8665 GB, free: 12.79 MB / 0.6387 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.283e-06/0.561, allocations: 0 / 0.8665 GB, free: 12.79 MB / 0.6387 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001108/0.5621, allocations: 0.6853 MB / 0.8672 GB, free: 12.07 MB / 0.6387 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00323/0.5654, allocations: 1.965 MB / 0.8691 GB, free: 10.05 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.641e-06/0.5654, allocations: 0 / 0.8691 GB, free: 10.05 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006112/0.566, allocations: 135.7 kB / 0.8692 GB, free: 9.918 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (simulation): time 7.644e-06/0.566, allocations: 4 kB / 0.8692 GB, free: 9.914 MB / 0.6387 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.322e-05/0.5661, allocations: 19.98 kB / 0.8692 GB, free: 9.895 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0005637/0.5667, allocations: 1.188 MB / 0.8704 GB, free: 8.66 MB / 0.6387 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.763e-06/0.5667, allocations: 0 / 0.8704 GB, free: 8.66 MB / 0.6387 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001856/0.5685, allocations: 1.211 MB / 0.8716 GB, free: 7.422 MB / 0.6387 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004333/0.569, allocations: 295.3 kB / 0.8719 GB, free: 7.113 MB / 0.6387 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001535/0.5691, allocations: 12 kB / 0.8719 GB, free: 7.102 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006567/0.5698, allocations: 44.03 kB / 0.8719 GB, free: 7.059 MB / 0.6387 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.216e-05/0.5699, allocations: 40.52 kB / 0.872 GB, free: 7.02 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.212e-05/0.57, allocations: 31.97 kB / 0.872 GB, free: 6.988 MB / 0.6387 GB Notification: Performance of sorting global known variables: time 0.001181/0.5712, allocations: 0.8797 MB / 0.8728 GB, free: 6.105 MB / 0.6387 GB Notification: Performance of sort global known variables: time 1.81e-07/0.5712, allocations: 0 / 0.8728 GB, free: 6.105 MB / 0.6387 GB Notification: Performance of remove unused functions: time 0.001649/0.5728, allocations: 0.7095 MB / 0.8735 GB, free: 5.395 MB / 0.6387 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 4 (pip1.vol[1].dynBal.U,pip2.vol[1].dynBal.U,senTem.T,senTem1.T) * 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 (62): * Single equations (assignments): 54 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 6 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0009161/0.5737, allocations: 479.4 kB / 0.874 GB, free: 4.926 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.002253/0.576, allocations: 1.031 MB / 0.875 GB, free: 3.898 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 4.167e-06/0.576, allocations: 0 / 0.875 GB, free: 3.898 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.0006776/0.5767, allocations: 359.2 kB / 0.8753 GB, free: 3.547 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00341/0.5801, allocations: 0.7661 MB / 0.8761 GB, free: 2.797 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003675/0.5838, allocations: 2.491 MB / 0.8785 GB, free: 268 kB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000794/0.5846, allocations: 1.289 MB / 0.8798 GB, free: 14.95 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003342/0.585, allocations: 123.3 kB / 0.8799 GB, free: 14.82 MB / 0.6544 GB Notification: Performance of SimCode: time 6.01e-07/0.585, allocations: 0 / 0.8799 GB, free: 14.82 MB / 0.6544 GB Notification: Performance of Templates: time 0.0444/0.6294, allocations: 38.31 MB / 0.9173 GB, free: 8.723 MB / 0.6856 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe.sim & ./BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.Pipe.pipe 2>&1)