Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.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/IDEAS 3.0.0/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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(IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow") translateModel(IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.008298/0.008298, allocations: 97.38 kB / 15.73 MB, free: 5.949 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001894/0.001894, allocations: 194.7 kB / 16.67 MB, free: 5.871 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.349/1.349, allocations: 222.9 MB / 240.4 MB, free: 15.07 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7572/0.7572, allocations: 132.2 MB / 422.7 MB, free: 6.531 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001129/0.001129, allocations: 61.84 kB / 0.5813 GB, free: 23.86 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1369/0.138, allocations: 80.21 MB / 0.6597 GB, free: 10.23 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow): time 0.5052/0.6433, allocations: 161.6 MB / 0.8175 GB, free: 9.703 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.002877/0.6462, allocations: 1.751 MB / 0.8192 GB, free: 8.723 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003154/0.6466, allocations: 15.31 kB / 0.8192 GB, free: 8.715 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.000562/0.6471, allocations: 170.6 kB / 0.8194 GB, free: 8.605 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.001232/0.6484, allocations: 0.5165 MB / 0.8199 GB, free: 8.281 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.001007/0.6494, allocations: 396.6 kB / 0.8203 GB, free: 8.07 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.002316/0.6518, allocations: 2.525 MB / 0.8227 GB, free: 6.676 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001069/0.6528, allocations: 0.9317 MB / 0.8236 GB, free: 6.152 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001614/0.6545, allocations: 1.038 MB / 0.8247 GB, free: 5.598 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0007814/0.6553, allocations: 0.7036 MB / 0.8253 GB, free: 5.195 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.000101/0.6554, allocations: 57.59 kB / 0.8254 GB, free: 5.195 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001332/0.6567, allocations: 0.7411 MB / 0.8261 GB, free: 4.797 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.0002749/0.657, allocations: 304.5 kB / 0.8264 GB, free: 4.594 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0005534/0.6576, allocations: 0.5417 MB / 0.8269 GB, free: 4.266 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.001478/0.659, allocations: 1.405 MB / 0.8283 GB, free: 3.43 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 4.178e-06/0.6591, allocations: 6.75 kB / 0.8283 GB, free: 3.426 MB / 0.5919 GB Notification: Performance of FrontEnd: time 1.303e-06/0.6591, allocations: 0 / 0.8283 GB, free: 3.426 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 1.912e-05/0.6591, allocations: 0 / 0.8283 GB, free: 3.426 MB / 0.5919 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 126 * Number of variables: 126 Notification: Performance of Generate backend data structure: time 0.002063/0.6612, allocations: 1.496 MB / 0.8298 GB, free: 2.262 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 3.273e-05/0.6612, allocations: 8.25 kB / 0.8298 GB, free: 2.262 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007109/0.6619, allocations: 188.9 kB / 0.83 GB, free: 2.172 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001195/0.6631, allocations: 0.8555 MB / 0.8308 GB, free: 1.543 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.569e-05/0.6632, allocations: 44.5 kB / 0.8308 GB, free: 1.527 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.716e-05/0.6633, allocations: 56.09 kB / 0.8309 GB, free: 1.512 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001069/0.6643, allocations: 0.7933 MB / 0.8317 GB, free: 0.9414 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.555e-05/0.6644, allocations: 6.5 kB / 0.8317 GB, free: 0.9375 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.141e-05/0.6644, allocations: 27.52 kB / 0.8317 GB, free: 0.918 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.169e-05/0.6644, allocations: 16.34 kB / 0.8317 GB, free: 0.9141 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008408/0.6653, allocations: 0.5385 MB / 0.8322 GB, free: 0.6484 MB / 0.5919 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 0.003855/0.6692, allocations: 4.591 MB / 0.8367 GB, free: 12.34 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0006703/0.6698, allocations: 419.1 kB / 0.8371 GB, free: 12.13 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003382/0.6702, allocations: 247.2 kB / 0.8374 GB, free: 12.01 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002761/0.6705, allocations: 195.6 kB / 0.8375 GB, free: 11.81 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004949/0.671, allocations: 296 kB / 0.8378 GB, free: 11.61 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=31): time 2.274e-06/0.671, allocations: 0 / 0.8378 GB, free: 11.61 MB / 0.6075 GB Notification: Performance of matching and sorting (n=31): time 0.001476/0.6725, allocations: 0.6416 MB / 0.8385 GB, free: 11.29 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.391e-05/0.6725, allocations: 83.86 kB / 0.8385 GB, free: 11.19 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001413/0.674, allocations: 1.115 MB / 0.8396 GB, free: 10.6 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 5.411e-05/0.674, allocations: 38.02 kB / 0.8397 GB, free: 10.56 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004465/0.6745, allocations: 495.3 kB / 0.8401 GB, free: 10.14 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.000148/0.6746, allocations: 114.6 kB / 0.8402 GB, free: 10.04 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001824/0.6748, allocations: 123 kB / 0.8404 GB, free: 9.969 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001494/0.675, allocations: 329.3 kB / 0.8407 GB, free: 9.648 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003727/0.6754, allocations: 216 kB / 0.8409 GB, free: 9.535 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005809/0.676, allocations: 0.5191 MB / 0.8414 GB, free: 9.039 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007841/0.6768, allocations: 0.6232 MB / 0.842 GB, free: 8.574 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.208e-06/0.6768, allocations: 2.906 kB / 0.842 GB, free: 8.574 MB / 0.6075 GB Notification: Performance of matching and sorting (n=54) (initialization): time 0.001144/0.6779, allocations: 0.7298 MB / 0.8427 GB, free: 8.18 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 4.706e-05/0.678, allocations: 42.45 kB / 0.8428 GB, free: 8.141 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.123e-05/0.678, allocations: 9.625 kB / 0.8428 GB, free: 8.137 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.337e-05/0.678, allocations: 11.38 kB / 0.8428 GB, free: 8.133 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001715/0.6797, allocations: 347.4 kB / 0.8431 GB, free: 8.016 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00326/0.683, allocations: 6.091 MB / 0.8491 GB, free: 1.922 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007343/0.6838, allocations: 73.66 kB / 0.8491 GB, free: 1.879 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.038e-05/0.6838, allocations: 24.19 kB / 0.8491 GB, free: 1.875 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0006994/0.6845, allocations: 0.4941 MB / 0.8496 GB, free: 1.586 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005197/0.6851, allocations: 488.8 kB / 0.8501 GB, free: 1.109 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006954/0.6858, allocations: 0.5574 MB / 0.8506 GB, free: 0.6758 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.877e-06/0.6858, allocations: 7.938 kB / 0.8506 GB, free: 0.668 MB / 0.6075 GB Notification: Performance of matching and sorting (n=54) (initialization_lambda0): time 0.0009841/0.6868, allocations: 0.6495 MB / 0.8513 GB, free: 324 kB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 2.929e-05/0.6868, allocations: 37.58 kB / 0.8513 GB, free: 288 kB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.069e-06/0.6868, allocations: 4.812 kB / 0.8513 GB, free: 288 kB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 7.805e-06/0.6868, allocations: 7.75 kB / 0.8513 GB, free: 288 kB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005054/0.6873, allocations: 156.4 kB / 0.8515 GB, free: 188 kB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 9.097e-06/0.6874, allocations: 8 kB / 0.8515 GB, free: 180 kB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005791/0.688, allocations: 68.06 kB / 0.8516 GB, free: 112 kB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.619e-05/0.688, allocations: 24 kB / 0.8516 GB, free: 88 kB / 0.6075 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 5 (pulse_p.count,$PRE.pulse_p.count,pulse_p.T_start,$PRE.pulse_p.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (53): * Single equations (assignments): 42 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 10 * 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): 10 systems {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0002192/0.6882, allocations: 216.1 kB / 0.8518 GB, free: 15.87 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000123/0.6884, allocations: 111.3 kB / 0.8519 GB, free: 15.76 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0009398/0.6893, allocations: 494.9 kB / 0.8524 GB, free: 15.27 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.861e-06/0.6893, allocations: 7.984 kB / 0.8524 GB, free: 15.26 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.946e-06/0.6893, allocations: 4 kB / 0.8524 GB, free: 15.25 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.701e-06/0.6893, allocations: 0 / 0.8524 GB, free: 15.25 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001925/0.6913, allocations: 1.379 MB / 0.8537 GB, free: 13.8 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.015e-06/0.6913, allocations: 4 kB / 0.8537 GB, free: 13.79 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005967/0.6919, allocations: 147.8 kB / 0.8539 GB, free: 13.65 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.721e-06/0.6919, allocations: 4.219 kB / 0.8539 GB, free: 13.64 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.56e-05/0.6919, allocations: 19.86 kB / 0.8539 GB, free: 13.62 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002762/0.6947, allocations: 6.017 MB / 0.8598 GB, free: 7.375 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.498e-06/0.6947, allocations: 7.875 kB / 0.8598 GB, free: 7.367 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0008657/0.6956, allocations: 0.6029 MB / 0.8604 GB, free: 6.727 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000294/0.6959, allocations: 216.4 kB / 0.8606 GB, free: 6.496 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001062/0.696, allocations: 11.94 kB / 0.8606 GB, free: 6.484 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003825/0.6964, allocations: 15.98 kB / 0.8606 GB, free: 6.469 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.963e-05/0.6965, allocations: 39.89 kB / 0.8606 GB, free: 6.43 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.355e-05/0.6965, allocations: 15.94 kB / 0.8606 GB, free: 6.414 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0009433/0.6975, allocations: 0.7836 MB / 0.8614 GB, free: 5.621 MB / 0.6231 GB Notification: Performance of sort global known variables: time 1.5e-07/0.6975, allocations: 0 / 0.8614 GB, free: 5.621 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.001084/0.6986, allocations: 415.5 kB / 0.8618 GB, free: 5.215 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,pulse_p.T_start,pulse_p.count) * Number of discrete states: 1 (pulse_p.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (31): * Single equations (assignments): 19 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 10 * 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): 10 systems {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0003818/0.699, allocations: 176.3 kB / 0.862 GB, free: 5.043 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.002937/0.7019, allocations: 1.086 MB / 0.863 GB, free: 3.934 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 4.128e-06/0.7019, allocations: 4.062 kB / 0.863 GB, free: 3.93 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.000778/0.7027, allocations: 287.2 kB / 0.8633 GB, free: 3.652 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001977/0.7047, allocations: 450.8 kB / 0.8637 GB, free: 3.227 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002831/0.7075, allocations: 1.819 MB / 0.8655 GB, free: 1.355 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007402/0.7083, allocations: 1.18 MB / 0.8667 GB, free: 148 kB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.000932/0.7092, allocations: 371.7 kB / 0.867 GB, free: 15.78 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001444/0.7094, allocations: 67.44 kB / 0.8671 GB, free: 15.71 MB / 0.6387 GB Notification: Performance of SimCode: time 4.71e-07/0.7094, allocations: 0 / 0.8671 GB, free: 15.71 MB / 0.6387 GB Notification: Performance of Templates: time 0.02983/0.7392, allocations: 18.12 MB / 0.8848 GB, free: 13.79 MB / 0.6544 GB make -j1 -f IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.makefile (rm -f IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.pipe ; mkfifo IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.pipe >> ../files/IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.sim & ./IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.pipe 2>&1)