Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.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/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) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo", uses=false) Using package OpenIPSL with version 3.1.0-dev (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/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) 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) Running command: translateModel(OpenIPSL.Tests.Controls.PSSE.ES.EXST1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1") translateModel(OpenIPSL.Tests.Controls.PSSE.ES.EXST1,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001601/0.001607, allocations: 180.6 kB / 15.98 MB, free: 5.77 MB / 13.93 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 / 239.7 MB, free: 10.99 MB / 202.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009895/0.0009895, allocations: 114.9 kB / 289.9 MB, free: 10.94 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo): time 0.4209/0.4209, allocations: 78.48 MB / 418.5 MB, free: 8.836 MB / 298.7 MB Notification: Performance of FrontEnd - loaded program: time 0.001175/0.001175, allocations: 71.89 kB / 497.5 MB, free: 10.7 MB / 378.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2554/0.2566, allocations: 68.12 MB / 0.5523 GB, free: 20.23 MB / 378.7 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Controls.PSSE.ES.EXST1): time 0.006261/0.2629, allocations: 8.66 MB / 0.5608 GB, free: 11.52 MB / 378.7 MB Notification: Performance of NFInst.instExpressions: time 0.00406/0.267, allocations: 2.712 MB / 0.5634 GB, free: 8.805 MB / 378.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0007874/0.2678, allocations: 16 kB / 0.5634 GB, free: 8.789 MB / 378.7 MB Notification: Performance of NFTyping.typeComponents: time 0.0006737/0.2685, allocations: 238.5 kB / 0.5637 GB, free: 8.555 MB / 378.7 MB Notification: Performance of NFTyping.typeBindings: time 0.002069/0.2706, allocations: 1.111 MB / 0.5648 GB, free: 7.445 MB / 378.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.001196/0.2718, allocations: 0.6974 MB / 0.5654 GB, free: 6.754 MB / 378.7 MB Notification: Performance of NFFlatten.flatten: time 0.001666/0.2735, allocations: 2.311 MB / 0.5677 GB, free: 4.434 MB / 378.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0004117/0.2739, allocations: 385.8 kB / 0.5681 GB, free: 4.035 MB / 378.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0006784/0.2746, allocations: 0.8206 MB / 0.5689 GB, free: 3.211 MB / 378.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0008088/0.2754, allocations: 1.097 MB / 0.5699 GB, free: 2.109 MB / 378.7 MB Notification: Performance of NFPackage.collectConstants: time 0.000192/0.2756, allocations: 108 kB / 0.57 GB, free: 2.004 MB / 378.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0005226/0.2761, allocations: 279.8 kB / 0.5703 GB, free: 1.73 MB / 378.7 MB Notification: Performance of NFScalarize.scalarize: time 0.0002491/0.2764, allocations: 398.2 kB / 0.5707 GB, free: 1.34 MB / 378.7 MB Notification: Performance of NFVerifyModel.verify: time 0.0004919/0.2769, allocations: 0.8542 MB / 0.5715 GB, free: 492 kB / 378.7 MB Notification: Performance of NFConvertDAE.convert: time 0.001893/0.2788, allocations: 2.238 MB / 0.5737 GB, free: 14.23 MB / 394.7 MB Notification: Performance of FrontEnd - DAE generated: time 4.478e-06/0.2788, allocations: 4 kB / 0.5737 GB, free: 14.23 MB / 394.7 MB Notification: Performance of FrontEnd: time 1.162e-06/0.2788, allocations: 0 / 0.5737 GB, free: 14.23 MB / 394.7 MB Notification: Performance of Transformations before backend: time 3.376e-05/0.2788, allocations: 0 / 0.5737 GB, free: 14.23 MB / 394.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 249 * Number of variables: 249 Notification: Performance of Generate backend data structure: time 0.014/0.2928, allocations: 3.947 MB / 0.5776 GB, free: 10.23 MB / 394.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.032e-05/0.2929, allocations: 12.03 kB / 0.5776 GB, free: 10.21 MB / 394.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004393/0.2973, allocations: 0.7588 MB / 0.5783 GB, free: 9.453 MB / 394.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001971/0.2993, allocations: 1.136 MB / 0.5794 GB, free: 8.266 MB / 394.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005486/0.2999, allocations: 0.4883 MB / 0.5799 GB, free: 7.695 MB / 394.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000214/0.3001, allocations: 119.9 kB / 0.58 GB, free: 7.578 MB / 394.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003048/0.3031, allocations: 1.482 MB / 0.5815 GB, free: 6.078 MB / 394.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.923e-05/0.3032, allocations: 0 / 0.5815 GB, free: 6.078 MB / 394.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001177/0.3033, allocations: 40 kB / 0.5815 GB, free: 6.039 MB / 394.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.05e-05/0.3033, allocations: 27.98 kB / 0.5815 GB, free: 6.012 MB / 394.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003447/0.3068, allocations: 1.441 MB / 0.5829 GB, free: 4.57 MB / 394.7 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 0.00897/0.3158, allocations: 4.97 MB / 0.5878 GB, free: 15.39 MB / 410.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.008853/0.3246, allocations: 3.007 MB / 0.5907 GB, free: 12.25 MB / 410.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.002536/0.3272, allocations: 0.9698 MB / 0.5917 GB, free: 11.27 MB / 410.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0001787/0.3274, allocations: 32.97 kB / 0.5917 GB, free: 11.23 MB / 410.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.061e-05/0.3275, allocations: 47.5 kB / 0.5917 GB, free: 11.18 MB / 410.7 MB Notification: Performance of pre-optimization done (n=128): time 4.078e-06/0.3275, allocations: 0 / 0.5917 GB, free: 11.18 MB / 410.7 MB Notification: Performance of matching and sorting (n=128): time 0.0411/0.3686, allocations: 10 MB / 0.6015 GB, free: 1.117 MB / 410.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 7.962e-05/0.3687, allocations: 141.5 kB / 0.6016 GB, free: 0.9492 MB / 410.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002087/0.3708, allocations: 1.448 MB / 0.6031 GB, free: 15.49 MB / 426.7 MB Notification: Performance of collectPreVariables (initialization): time 0.0002567/0.3711, allocations: 49.7 kB / 0.6031 GB, free: 15.43 MB / 426.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0004265/0.3715, allocations: 0.6081 MB / 0.6037 GB, free: 14.82 MB / 426.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0004542/0.372, allocations: 473.3 kB / 0.6042 GB, free: 14.36 MB / 426.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006061/0.3726, allocations: 351.4 kB / 0.6045 GB, free: 14.01 MB / 426.7 MB Notification: Performance of setup shared object (initialization): time 7.908e-05/0.3727, allocations: 309.1 kB / 0.6048 GB, free: 13.7 MB / 426.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002351/0.375, allocations: 1.039 MB / 0.6058 GB, free: 12.66 MB / 426.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002442/0.3775, allocations: 1.237 MB / 0.607 GB, free: 11.37 MB / 426.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.00468/0.3822, allocations: 2.198 MB / 0.6092 GB, free: 9.133 MB / 426.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.806e-06/0.3822, allocations: 0 / 0.6092 GB, free: 9.133 MB / 426.7 MB Notification: Performance of matching and sorting (n=244) (initialization): time 0.01045/0.3926, allocations: 3.906 MB / 0.613 GB, free: 5.215 MB / 426.7 MB Notification: Performance of prepare postOptimizeDAE: time 2.402e-05/0.3927, allocations: 8 kB / 0.613 GB, free: 5.207 MB / 426.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.573e-05/0.3927, allocations: 7.984 kB / 0.613 GB, free: 5.199 MB / 426.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.01058/0.4033, allocations: 3.048 MB / 0.616 GB, free: 2.148 MB / 426.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001439/0.4048, allocations: 299.6 kB / 0.6162 GB, free: 1.855 MB / 426.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00865/0.4134, allocations: 3.231 MB / 0.6194 GB, free: 14.6 MB / 442.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002465/0.4159, allocations: 262.3 kB / 0.6196 GB, free: 14.34 MB / 442.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001938/0.4161, allocations: 67.97 kB / 0.6197 GB, free: 14.27 MB / 442.7 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002754/0.4189, allocations: 1.246 MB / 0.6209 GB, free: 13.02 MB / 442.7 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002522/0.4214, allocations: 1.23 MB / 0.6221 GB, free: 11.74 MB / 442.7 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.00458/0.426, allocations: 2.171 MB / 0.6243 GB, free: 9.531 MB / 442.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.489e-06/0.4261, allocations: 0 / 0.6243 GB, free: 9.531 MB / 442.7 MB Notification: Performance of matching and sorting (n=244) (initialization_lambda0): time 0.0101/0.4362, allocations: 3.875 MB / 0.628 GB, free: 5.645 MB / 442.7 MB Notification: Performance of prepare postOptimizeDAE: time 2.08e-05/0.4362, allocations: 12 kB / 0.628 GB, free: 5.633 MB / 442.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.12e-05/0.4362, allocations: 4 kB / 0.6281 GB, free: 5.629 MB / 442.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0106/0.4468, allocations: 3.04 MB / 0.631 GB, free: 2.582 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001537/0.4484, allocations: 295.6 kB / 0.6313 GB, free: 2.293 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008718/0.4572, allocations: 3.187 MB / 0.6344 GB, free: 15.08 MB / 458.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002384/0.4596, allocations: 238.6 kB / 0.6346 GB, free: 14.84 MB / 458.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002034/0.4598, allocations: 67.97 kB / 0.6347 GB, free: 14.78 MB / 458.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 15 * 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 (171): * Single equations (assignments): 170 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(34,40)} Notification: Performance of prepare postOptimizeDAE: time 0.0004082/0.4602, allocations: 272.9 kB / 0.635 GB, free: 14.5 MB / 458.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003893/0.4606, allocations: 165.9 kB / 0.6351 GB, free: 14.34 MB / 458.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01799/0.4786, allocations: 4.988 MB / 0.64 GB, free: 9.32 MB / 458.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.747e-05/0.4787, allocations: 12 kB / 0.64 GB, free: 9.309 MB / 458.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.185e-06/0.4787, allocations: 4 kB / 0.64 GB, free: 9.305 MB / 458.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.862e-05/0.4787, allocations: 7.969 kB / 0.64 GB, free: 9.297 MB / 458.7 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 postOpt removeSimpleEquations (simulation): time 0.02104/0.4998, allocations: 7.263 MB / 0.6471 GB, free: 1.891 MB / 458.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.334e-05/0.4999, allocations: 0 / 0.6471 GB, free: 1.891 MB / 458.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002731/0.5026, allocations: 443.5 kB / 0.6475 GB, free: 1.457 MB / 458.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.008086/0.5107, allocations: 2.248 MB / 0.6497 GB, free: 15.2 MB / 474.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002353/0.511, allocations: 27.98 kB / 0.6498 GB, free: 15.18 MB / 474.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02983/0.5408, allocations: 12.84 MB / 0.6623 GB, free: 1.926 MB / 474.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.874e-06/0.5408, allocations: 0 / 0.6623 GB, free: 1.926 MB / 474.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.4836/1.024, allocations: 43.88 MB / 0.7051 GB, free: 104 MB / 490.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0005/1.025, allocations: 281.6 kB / 0.7054 GB, free: 103.8 MB / 490.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000399/1.025, allocations: 29.98 kB / 0.7054 GB, free: 103.8 MB / 490.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002554/1.028, allocations: 142.1 kB / 0.7056 GB, free: 103.7 MB / 490.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001118/1.029, allocations: 255.8 kB / 0.7058 GB, free: 103.5 MB / 490.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001672/1.029, allocations: 39.92 kB / 0.7059 GB, free: 103.5 MB / 490.7 MB Notification: Performance of sorting global known variables: time 0.001924/1.031, allocations: 0.9747 MB / 0.7068 GB, free: 102.5 MB / 490.7 MB Notification: Performance of sort global known variables: time 3.41e-07/1.031, allocations: 0 / 0.7068 GB, free: 102.5 MB / 490.7 MB Notification: Performance of remove unused functions: time 0.004983/1.036, allocations: 1.385 MB / 0.7082 GB, free: 101.2 MB / 490.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 13 (gENCLS.delta,gENCLS.eq,gENROE.w,gENROE.delta,gENROE.Epd,gENROE.Epq,gENROE.PSIkd,gENROE.PSIkq,eXST1.imLeadLag.TF.x_scaled[1],eXST1.Vm1.state,eXST1.imDerivativeLag.x,eXST1.TransducerDelay.state,gENCLS.omega) * 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 (79): * Single equations (assignments): 76 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 2 * 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): 1 system {1} * Without analytic Jacobian (size): 0 systems 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 {(1,6), (26,23)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0003659/1.037, allocations: 150 kB / 0.7083 GB, free: 101 MB / 490.7 MB Notification: Performance of simCode: created initialization part: time 0.02584/1.062, allocations: 5.304 MB / 0.7135 GB, free: 95.74 MB / 490.7 MB Notification: Performance of simCode: created event and clocks part: time 6.061e-06/1.063, allocations: 0 / 0.7135 GB, free: 95.74 MB / 490.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0121/1.075, allocations: 2.371 MB / 0.7158 GB, free: 93.34 MB / 490.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001937/1.077, allocations: 145.3 kB / 0.7159 GB, free: 93.2 MB / 490.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01244/1.089, allocations: 5.596 MB / 0.7214 GB, free: 87.56 MB / 490.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006067/1.09, allocations: 1.303 MB / 0.7227 GB, free: 86.22 MB / 490.7 MB Notification: Performance of simCode: alias equations: time 0.0009327/1.091, allocations: 182.1 kB / 0.7229 GB, free: 86.04 MB / 490.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004288/1.091, allocations: 91.42 kB / 0.7229 GB, free: 85.95 MB / 490.7 MB Notification: Performance of SimCode: time 6.71e-07/1.091, allocations: 0 / 0.7229 GB, free: 85.95 MB / 490.7 MB Notification: Performance of Templates: time 0.05273/1.144, allocations: 50.27 MB / 0.772 GB, free: 35.72 MB / 490.7 MB make -j1 -f OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.makefile (rm -f OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.pipe ; mkfifo OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.pipe ; head -c 1048576 < OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.pipe >> ../files/OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.sim & ./OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1 -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_dev_OpenIPSL.Tests.Controls.PSSE.ES.EXST1.pipe 2>&1)