Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/package.mo", uses=false) Using package Annex60 with version 1.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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(Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger") translateModel(Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001234/0.001234, allocations: 108 kB / 15.61 MB, free: 152 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001433/0.001433, allocations: 197.1 kB / 16.53 MB, free: 6.664 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.45/1.45, allocations: 205.1 MB / 222.4 MB, free: 4.598 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/package.mo): time 0.4494/0.4494, allocations: 54.95 MB / 324.7 MB, free: 15.93 MB / 270.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Annex60 requested package Modelica of version 3.2.2. Modelica 3.2.3 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001426/0.001426, allocations: 67.91 kB / 395.3 MB, free: 11.81 MB / 334.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1422/0.1436, allocations: 59.59 MB / 454.9 MB, free: 156 kB / 382.1 MB Notification: Performance of NFInst.instantiate(Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger): time 0.9572/1.101, allocations: 328.6 MB / 0.7651 GB, free: 9.879 MB / 0.5137 GB Notification: Performance of NFInst.instExpressions: time 0.04273/1.144, allocations: 29.94 MB / 0.7943 GB, free: 0.9531 MB / 0.5294 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.005271/1.149, allocations: 94.03 kB / 0.7944 GB, free: 0.8945 MB / 0.5294 GB Notification: Performance of NFTyping.typeComponents: time 0.007425/1.156, allocations: 2.184 MB / 0.7966 GB, free: 15.33 MB / 0.545 GB Notification: Performance of NFTyping.typeBindings: time 0.01751/1.174, allocations: 4.969 MB / 0.8014 GB, free: 10.73 MB / 0.545 GB Notification: Performance of NFTyping.typeClassSections: time 0.01274/1.187, allocations: 3.885 MB / 0.8052 GB, free: 6.863 MB / 0.545 GB Notification: Performance of NFFlatten.flatten: time 0.01333/1.2, allocations: 7.197 MB / 0.8122 GB, free: 15.66 MB / 0.5606 GB Notification: Performance of NFFlatten.resolveConnections: time 0.006745/1.207, allocations: 2.863 MB / 0.815 GB, free: 12.77 MB / 0.5606 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01448/1.221, allocations: 5.146 MB / 0.8201 GB, free: 7.598 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00847/1.23, allocations: 2.654 MB / 0.8227 GB, free: 4.949 MB / 0.5606 GB Notification: Performance of NFPackage.collectConstants: time 0.002071/1.232, allocations: 312 kB / 0.8229 GB, free: 4.645 MB / 0.5606 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01242/1.244, allocations: 4.576 MB / 0.8274 GB, free: 60 kB / 0.5606 GB Notification: Performance of NFScalarize.scalarize: time 0.002855/1.247, allocations: 1.13 MB / 0.8285 GB, free: 14.93 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.006488/1.254, allocations: 1.816 MB / 0.8303 GB, free: 13.1 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.01842/1.272, allocations: 5.797 MB / 0.836 GB, free: 7.289 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 9.778e-06/1.272, allocations: 3.984 kB / 0.836 GB, free: 7.285 MB / 0.5762 GB Notification: Performance of FrontEnd: time 3.046e-06/1.272, allocations: 0 / 0.836 GB, free: 7.285 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 0.0002296/1.273, allocations: 0 / 0.836 GB, free: 7.285 MB / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 568 * Number of variables: 568 Notification: Performance of Generate backend data structure: time 0.01253/1.285, allocations: 3.873 MB / 0.8397 GB, free: 3.309 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 4.812e-05/1.285, allocations: 8.031 kB / 0.8397 GB, free: 3.301 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0104/1.296, allocations: 1.46 MB / 0.8412 GB, free: 1.836 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00531/1.301, allocations: 1.939 MB / 0.8431 GB, free: 15.84 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.001419/1.302, allocations: 404.1 kB / 0.8435 GB, free: 15.45 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0009302/1.303, allocations: 228 kB / 0.8437 GB, free: 15.22 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01053/1.314, allocations: 3.525 MB / 0.8471 GB, free: 11.55 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.821e-05/1.314, allocations: 0 / 0.8471 GB, free: 11.55 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003412/1.314, allocations: 96 kB / 0.8472 GB, free: 11.46 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001062/1.315, allocations: 92.25 kB / 0.8473 GB, free: 11.36 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.009607/1.324, allocations: 3.58 MB / 0.8508 GB, free: 7.766 MB / 0.5919 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.02602/1.35, allocations: 14.5 MB / 0.8649 GB, free: 8.137 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.005524/1.356, allocations: 1.924 MB / 0.8668 GB, free: 6.207 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001816/1.358, allocations: 0.7766 MB / 0.8676 GB, free: 5.426 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0004072/1.358, allocations: 138 kB / 0.8677 GB, free: 5.27 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.736e-05/1.358, allocations: 55.56 kB / 0.8678 GB, free: 5.207 MB / 0.6075 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001429/1.36, allocations: 202 kB / 0.868 GB, free: 5.008 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=106): time 4.929e-06/1.36, allocations: 0 / 0.868 GB, free: 5.008 MB / 0.6075 GB Notification: Performance of matching and sorting (n=106): time 0.009318/1.369, allocations: 2.949 MB / 0.8708 GB, free: 2.055 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.845e-05/1.369, allocations: 119.8 kB / 0.871 GB, free: 1.91 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.2811/1.65, allocations: 2.605 MB / 0.8735 GB, free: 264.2 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 0.0004868/1.651, allocations: 59.98 kB / 0.8736 GB, free: 264.1 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.001033/1.652, allocations: 1.314 MB / 0.8748 GB, free: 264 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003957/1.652, allocations: 377.8 kB / 0.8752 GB, free: 263.8 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0007811/1.653, allocations: 416.1 kB / 0.8756 GB, free: 263.8 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 6.388e-05/1.653, allocations: 304.9 kB / 0.8759 GB, free: 263.5 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003256/1.656, allocations: 1.146 MB / 0.877 GB, free: 263.4 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003827/1.66, allocations: 1.744 MB / 0.8787 GB, free: 262.7 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.005677/1.666, allocations: 2.723 MB / 0.8814 GB, free: 261.4 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.842e-05/1.666, allocations: 3.375 kB / 0.8814 GB, free: 261.4 MB / 0.6075 GB Notification: Performance of matching and sorting (n=230) (initialization): time 0.008078/1.674, allocations: 3.337 MB / 0.8846 GB, free: 260.3 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001077/1.674, allocations: 185.2 kB / 0.8848 GB, free: 260.1 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.189e-05/1.674, allocations: 16.88 kB / 0.8848 GB, free: 260.1 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.855e-05/1.674, allocations: 23.28 kB / 0.8848 GB, free: 260.1 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01096/1.685, allocations: 1.929 MB / 0.8867 GB, free: 260.1 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01334/1.699, allocations: 7.714 MB / 0.8943 GB, free: 254.2 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004173/1.703, allocations: 368.7 kB / 0.8946 GB, free: 254.2 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003365/1.703, allocations: 102.9 kB / 0.8947 GB, free: 254.2 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.003397/1.706, allocations: 1.492 MB / 0.8962 GB, free: 253.6 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003005/1.71, allocations: 1.635 MB / 0.8978 GB, free: 252.6 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.004772/1.714, allocations: 2.515 MB / 0.9002 GB, free: 251.2 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.349e-05/1.714, allocations: 5.656 kB / 0.9002 GB, free: 251.2 MB / 0.6075 GB Notification: Performance of matching and sorting (n=230) (initialization_lambda0): time 0.007488/1.722, allocations: 3.127 MB / 0.9033 GB, free: 250.2 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001036/1.722, allocations: 187.9 kB / 0.9035 GB, free: 250 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.039e-05/1.722, allocations: 14.28 kB / 0.9035 GB, free: 250 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.413e-05/1.722, allocations: 29.75 kB / 0.9035 GB, free: 250 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002896/1.725, allocations: 0.5648 MB / 0.9041 GB, free: 249.9 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 5.531e-05/1.725, allocations: 36.84 kB / 0.9041 GB, free: 249.9 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00373/1.729, allocations: 331.3 kB / 0.9044 GB, free: 249.9 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000247/1.729, allocations: 94.48 kB / 0.9045 GB, free: 249.9 MB / 0.6075 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 69 * Number of states: 0 () * Number of discrete variables: 8 (senMas2.i_x,senMas1.i_x,senMas4.i_x,senMas3.i_x,masExcRev.i2_w,masExcRev.i1_w,masExcFor.i2_w,masExcFor.i1_w) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (228): * Single equations (assignments): 218 * Array equations: 0 * Algorithm blocks: 6 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * 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): 4 systems {1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0006111/1.73, allocations: 307.4 kB / 0.9048 GB, free: 249.6 MB / 0.6075 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006688/1.73, allocations: 260.1 kB / 0.905 GB, free: 249.5 MB / 0.6075 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00584/1.736, allocations: 2.086 MB / 0.9071 GB, free: 248.8 MB / 0.6075 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.702e-05/1.736, allocations: 10.16 kB / 0.9071 GB, free: 248.8 MB / 0.6075 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.318e-06/1.736, allocations: 0 / 0.9071 GB, free: 248.8 MB / 0.6075 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.362e-05/1.736, allocations: 6.781 kB / 0.9071 GB, free: 248.8 MB / 0.6075 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01801/1.754, allocations: 5.251 MB / 0.9122 GB, free: 247 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.357e-05/1.754, allocations: 4.625 kB / 0.9122 GB, free: 247 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.01094/1.765, allocations: 1.637 MB / 0.9138 GB, free: 247 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (simulation): time 3.001e-05/1.765, allocations: 12.62 kB / 0.9138 GB, free: 247 MB / 0.6075 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000195/1.766, allocations: 30.48 kB / 0.9139 GB, free: 247 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01412/1.78, allocations: 7.573 MB / 0.9213 GB, free: 241 MB / 0.6075 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.003e-06/1.78, allocations: 4.375 kB / 0.9213 GB, free: 241 MB / 0.6075 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006003/1.786, allocations: 2.166 MB / 0.9234 GB, free: 240 MB / 0.6075 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001424/1.787, allocations: 0.5431 MB / 0.9239 GB, free: 239.7 MB / 0.6075 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004771/1.788, allocations: 23.61 kB / 0.9239 GB, free: 239.7 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00277/1.79, allocations: 229.7 kB / 0.9242 GB, free: 239.6 MB / 0.6075 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002947/1.791, allocations: 92.45 kB / 0.9242 GB, free: 239.6 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001839/1.791, allocations: 61.19 kB / 0.9243 GB, free: 239.6 MB / 0.6075 GB Notification: Performance of sorting global known variables: time 0.003478/1.794, allocations: 1.797 MB / 0.9261 GB, free: 239 MB / 0.6075 GB Notification: Performance of sort global known variables: time 3.21e-07/1.794, allocations: 4 kB / 0.9261 GB, free: 239 MB / 0.6075 GB Notification: Performance of remove unused functions: time 0.004948/1.799, allocations: 1.392 MB / 0.9274 GB, free: 238.8 MB / 0.6075 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 19 * 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 simulation (106): * Single equations (assignments): 102 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * 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): 4 systems {1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0008899/1.8, allocations: 351.1 kB / 0.9278 GB, free: 238.6 MB / 0.6075 GB Notification: Performance of simCode: created initialization part: time 0.01971/1.82, allocations: 6.005 MB / 0.9336 GB, free: 236.7 MB / 0.6075 GB Notification: Performance of simCode: created event and clocks part: time 1.902e-05/1.82, allocations: 4.719 kB / 0.9336 GB, free: 236.7 MB / 0.6075 GB Notification: Performance of simCode: created simulation system equations: time 0.01616/1.836, allocations: 3.136 MB / 0.9367 GB, free: 236.4 MB / 0.6075 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.006525/1.843, allocations: 1.297 MB / 0.9379 GB, free: 235.9 MB / 0.6075 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007007/1.85, allocations: 4.413 MB / 0.9423 GB, free: 231.5 MB / 0.6075 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009252/1.851, allocations: 1.703 MB / 0.9439 GB, free: 229.8 MB / 0.6075 GB Notification: Performance of simCode: alias equations: time 0.003736/1.855, allocations: 0.7957 MB / 0.9447 GB, free: 229 MB / 0.6075 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005944/1.855, allocations: 195.4 kB / 0.9449 GB, free: 228.8 MB / 0.6075 GB Notification: Performance of SimCode: time 1.293e-06/1.855, allocations: 0 / 0.9449 GB, free: 228.8 MB / 0.6075 GB Notification: Performance of Templates: time 0.07218/1.927, allocations: 51.79 MB / 0.9955 GB, free: 177.5 MB / 0.6075 GB make -j1 -f Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.makefile (rm -f Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; mkfifo Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; head -c 1048576 < Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe >> ../files/Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.sim & ./Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger -abortSlowSimulation -alarm=480 -lv LOG_STATS > Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe 2>&1)