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 0.001523/0.001523, allocations: 101.6 kB / 16.37 MB, free: 6.441 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001773/0.001773, allocations: 195.3 kB / 17.31 MB, free: 5.812 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.33/1.33, allocations: 222.9 MB / 241 MB, free: 15.19 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.804/0.804, allocations: 132.2 MB / 423.4 MB, free: 6.602 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001297/0.001297, allocations: 59.91 kB / 0.5032 GB, free: 10.96 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3829/0.3842, allocations: 80.18 MB / 0.5815 GB, free: 27.61 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow): time 0.1676/0.5519, allocations: 161.6 MB / 0.7393 GB, free: 12.06 MB / 0.5762 GB Notification: Performance of NFInst.instExpressions: time 0.003111/0.555, allocations: 1.763 MB / 0.741 GB, free: 10.3 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003084/0.5553, allocations: 15.88 kB / 0.7411 GB, free: 10.28 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.0006084/0.556, allocations: 155 kB / 0.7412 GB, free: 10.13 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.001223/0.5572, allocations: 0.5289 MB / 0.7417 GB, free: 9.598 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.001028/0.5583, allocations: 393 kB / 0.7421 GB, free: 9.219 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.002562/0.5608, allocations: 2.53 MB / 0.7446 GB, free: 6.68 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001132/0.562, allocations: 0.9294 MB / 0.7455 GB, free: 5.738 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00155/0.5636, allocations: 1.024 MB / 0.7465 GB, free: 4.711 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0007773/0.5643, allocations: 0.7078 MB / 0.7472 GB, free: 4 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 9.375e-05/0.5644, allocations: 56 kB / 0.7472 GB, free: 3.945 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001282/0.5657, allocations: 0.7406 MB / 0.7479 GB, free: 3.203 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.0002882/0.566, allocations: 306.9 kB / 0.7482 GB, free: 2.902 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.0005556/0.5666, allocations: 0.5401 MB / 0.7488 GB, free: 2.359 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.001344/0.5679, allocations: 1.402 MB / 0.7501 GB, free: 0.957 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 4.158e-06/0.568, allocations: 0 / 0.7501 GB, free: 0.957 MB / 0.5762 GB Notification: Performance of FrontEnd: time 1.633e-06/0.568, allocations: 4 kB / 0.7501 GB, free: 0.9531 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 1.133e-05/0.568, allocations: 0 / 0.7501 GB, free: 0.9531 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: 126 * Number of variables: 126 Notification: Performance of Generate backend data structure: time 0.2711/0.8391, allocations: 1.445 MB / 0.7516 GB, free: 168.7 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 3.909e-05/0.8392, allocations: 8.906 kB / 0.7516 GB, free: 168.7 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000832/0.84, allocations: 186 kB / 0.7517 GB, free: 168.6 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001557/0.8416, allocations: 0.8542 MB / 0.7526 GB, free: 168.2 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.503e-05/0.8416, allocations: 43.44 kB / 0.7526 GB, free: 168.2 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.6e-05/0.8417, allocations: 58.34 kB / 0.7527 GB, free: 168.1 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001196/0.8429, allocations: 0.7895 MB / 0.7534 GB, free: 167.7 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.77e-05/0.843, allocations: 5.562 kB / 0.7534 GB, free: 167.7 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.811e-05/0.843, allocations: 26.59 kB / 0.7535 GB, free: 167.7 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.632e-05/0.843, allocations: 13.88 kB / 0.7535 GB, free: 167.7 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009747/0.844, allocations: 0.5392 MB / 0.754 GB, free: 167.6 MB / 0.5762 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 0.003701/0.8477, allocations: 4.59 MB / 0.7585 GB, free: 163.5 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007252/0.8485, allocations: 417 kB / 0.7589 GB, free: 163.3 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004152/0.8489, allocations: 247.1 kB / 0.7591 GB, free: 163.2 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002723/0.8492, allocations: 195.9 kB / 0.7593 GB, free: 163 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004818/0.8497, allocations: 286.9 kB / 0.7596 GB, free: 162.8 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=31): time 1.954e-06/0.8497, allocations: 0.5625 kB / 0.7596 GB, free: 162.8 MB / 0.5762 GB Notification: Performance of matching and sorting (n=31): time 0.001561/0.8512, allocations: 0.6319 MB / 0.7602 GB, free: 162.5 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.929e-05/0.8513, allocations: 90.44 kB / 0.7603 GB, free: 162.4 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001493/0.8528, allocations: 1.114 MB / 0.7614 GB, free: 161.8 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 3.98e-05/0.8528, allocations: 35.7 kB / 0.7614 GB, free: 161.8 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002774/0.8531, allocations: 493.6 kB / 0.7619 GB, free: 161.3 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 6.204e-05/0.8532, allocations: 112.9 kB / 0.762 GB, free: 161.2 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001479/0.8533, allocations: 108.9 kB / 0.7621 GB, free: 161.2 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 4.89e-05/0.8534, allocations: 323.6 kB / 0.7624 GB, free: 160.9 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003297/0.8537, allocations: 218.4 kB / 0.7626 GB, free: 160.8 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004654/0.8542, allocations: 0.5197 MB / 0.7631 GB, free: 160.3 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007524/0.855, allocations: 0.6317 MB / 0.7637 GB, free: 159.8 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.238e-06/0.855, allocations: 3.094 kB / 0.7637 GB, free: 159.8 MB / 0.5762 GB Notification: Performance of matching and sorting (n=54) (initialization): time 0.001048/0.856, allocations: 0.7222 MB / 0.7644 GB, free: 159.4 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 3.39e-05/0.8561, allocations: 38.3 kB / 0.7645 GB, free: 159.4 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.105e-05/0.8561, allocations: 12.66 kB / 0.7645 GB, free: 159.4 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.193e-05/0.8561, allocations: 12 kB / 0.7645 GB, free: 159.4 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001763/0.8579, allocations: 351 kB / 0.7648 GB, free: 159.3 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002486/0.8604, allocations: 6.073 MB / 0.7708 GB, free: 153.2 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007318/0.8611, allocations: 86.45 kB / 0.7709 GB, free: 153.2 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.226e-05/0.8612, allocations: 22.91 kB / 0.7709 GB, free: 153.2 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0007888/0.862, allocations: 0.4962 MB / 0.7714 GB, free: 152.9 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005612/0.8626, allocations: 491.2 kB / 0.7718 GB, free: 152.4 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007297/0.8633, allocations: 0.5588 MB / 0.7724 GB, free: 152 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.978e-06/0.8633, allocations: 5.125 kB / 0.7724 GB, free: 152 MB / 0.5762 GB Notification: Performance of matching and sorting (n=54) (initialization_lambda0): time 0.0009529/0.8643, allocations: 0.6411 MB / 0.773 GB, free: 151.6 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 3.025e-05/0.8643, allocations: 33.33 kB / 0.773 GB, free: 151.6 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.606e-06/0.8644, allocations: 12.5 kB / 0.773 GB, free: 151.6 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.21e-05/0.8644, allocations: 8.406 kB / 0.7731 GB, free: 151.6 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005172/0.8649, allocations: 152.1 kB / 0.7732 GB, free: 151.6 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.235e-06/0.8649, allocations: 11.84 kB / 0.7732 GB, free: 151.6 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005778/0.8655, allocations: 63.69 kB / 0.7733 GB, free: 151.5 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.41e-05/0.8655, allocations: 31.61 kB / 0.7733 GB, free: 151.5 MB / 0.5762 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 0.0001591/0.8657, allocations: 219.3 kB / 0.7735 GB, free: 151.3 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 9.985e-05/0.8658, allocations: 98.16 kB / 0.7736 GB, free: 151.2 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0007971/0.8666, allocations: 495.5 kB / 0.7741 GB, free: 151 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.28e-06/0.8666, allocations: 3.969 kB / 0.7741 GB, free: 151 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.991e-06/0.8666, allocations: 3.969 kB / 0.7741 GB, free: 151 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.451e-06/0.8667, allocations: 3.938 kB / 0.7741 GB, free: 151 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001647/0.8683, allocations: 1.382 MB / 0.7754 GB, free: 149.8 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.206e-06/0.8683, allocations: 4 kB / 0.7754 GB, free: 149.8 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005196/0.8688, allocations: 148.9 kB / 0.7756 GB, free: 149.6 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 8.025e-06/0.8689, allocations: 4 kB / 0.7756 GB, free: 149.6 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.218e-05/0.8689, allocations: 11.94 kB / 0.7756 GB, free: 149.6 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001641/0.8705, allocations: 6.027 MB / 0.7815 GB, free: 143.4 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.156e-06/0.8706, allocations: 4.031 kB / 0.7815 GB, free: 143.4 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006447/0.8712, allocations: 0.6033 MB / 0.7821 GB, free: 142.7 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002884/0.8715, allocations: 211.8 kB / 0.7823 GB, free: 142.5 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001072/0.8716, allocations: 8 kB / 0.7823 GB, free: 142.5 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003688/0.872, allocations: 23.97 kB / 0.7823 GB, free: 142.5 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.95e-05/0.8721, allocations: 34.33 kB / 0.7823 GB, free: 142.4 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.048e-05/0.8721, allocations: 12 kB / 0.7824 GB, free: 142.4 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.0007397/0.8729, allocations: 0.7875 MB / 0.7831 GB, free: 141.6 MB / 0.5762 GB Notification: Performance of sort global known variables: time 1.5e-07/0.8729, allocations: 0 / 0.7831 GB, free: 141.6 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.0009771/0.8738, allocations: 403.4 kB / 0.7835 GB, free: 141.2 MB / 0.5762 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 0.000424/0.8743, allocations: 188.1 kB / 0.7837 GB, free: 141.1 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.002619/0.8769, allocations: 1.09 MB / 0.7848 GB, free: 140 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 3.126e-06/0.8769, allocations: 0 / 0.7848 GB, free: 140 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.0006633/0.8776, allocations: 289.5 kB / 0.785 GB, free: 139.7 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00157/0.8792, allocations: 455.6 kB / 0.7855 GB, free: 139.3 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002077/0.8813, allocations: 1.791 MB / 0.7872 GB, free: 137.4 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004413/0.8817, allocations: 1.188 MB / 0.7884 GB, free: 136.2 MB / 0.5762 GB Notification: Performance of simCode: alias equations: time 0.0007347/0.8825, allocations: 367.7 kB / 0.7887 GB, free: 135.8 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001161/0.8826, allocations: 67.42 kB / 0.7888 GB, free: 135.8 MB / 0.5762 GB Notification: Performance of SimCode: time 3.21e-07/0.8826, allocations: 0 / 0.7888 GB, free: 135.8 MB / 0.5762 GB Notification: Performance of Templates: time 0.02373/0.9063, allocations: 17.96 MB / 0.8063 GB, free: 118.1 MB / 0.5762 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 -s gbode -lv LOG_STATS > IDEAS_IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesFlow.pipe 2>&1)