Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.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/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/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(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter") translateModel(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00932/0.00932, allocations: 101.1 kB / 15.73 MB, free: 6.035 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001857/0.001857, allocations: 199.3 kB / 16.67 MB, free: 5.969 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.025/2.025, allocations: 205.1 MB / 222.6 MB, free: 4.402 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.746/1.746, allocations: 251.7 MB / 0.5094 GB, free: 3.012 MB / 414.1 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: Performance of FrontEnd - loaded program: time 0.001458/0.001458, allocations: 71.91 kB / 0.7258 GB, free: 9.012 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.31/0.3115, allocations: 104.7 MB / 0.828 GB, free: 204 kB / 0.6387 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter): time 0.005947/0.3175, allocations: 3.34 MB / 0.8313 GB, free: 12.84 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.004009/0.3216, allocations: 2.202 MB / 0.8334 GB, free: 10.62 MB / 0.6544 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0002006/0.3218, allocations: 7.938 kB / 0.8335 GB, free: 10.62 MB / 0.6544 GB Notification: Performance of NFTyping.typeComponents: time 0.001148/0.3229, allocations: 278.9 kB / 0.8337 GB, free: 10.34 MB / 0.6544 GB Notification: Performance of NFTyping.typeBindings: time 0.0006667/0.3236, allocations: 246.9 kB / 0.834 GB, free: 10.1 MB / 0.6544 GB Notification: Performance of NFTyping.typeClassSections: time 0.0009282/0.3246, allocations: 294.7 kB / 0.8342 GB, free: 9.816 MB / 0.6544 GB Notification: Performance of NFFlatten.flatten: time 0.0005469/0.3251, allocations: 394.4 kB / 0.8346 GB, free: 9.43 MB / 0.6544 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004544/0.3256, allocations: 200.8 kB / 0.8348 GB, free: 9.234 MB / 0.6544 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0002392/0.3258, allocations: 155.4 kB / 0.835 GB, free: 9.082 MB / 0.6544 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0003662/0.3262, allocations: 179.4 kB / 0.8351 GB, free: 8.906 MB / 0.6544 GB Notification: Performance of NFPackage.collectConstants: time 4.465e-05/0.3263, allocations: 20 kB / 0.8351 GB, free: 8.887 MB / 0.6544 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0007218/0.327, allocations: 423.1 kB / 0.8355 GB, free: 8.473 MB / 0.6544 GB Notification: Performance of NFScalarize.scalarize: time 0.000125/0.3271, allocations: 99.77 kB / 0.8356 GB, free: 8.375 MB / 0.6544 GB Notification: Performance of NFVerifyModel.verify: time 0.0001609/0.3273, allocations: 135.3 kB / 0.8358 GB, free: 8.242 MB / 0.6544 GB Notification: Performance of NFConvertDAE.convert: time 0.0007602/0.3281, allocations: 0.5064 MB / 0.8363 GB, free: 7.734 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 8.406e-06/0.3281, allocations: 4 kB / 0.8363 GB, free: 7.73 MB / 0.6544 GB Notification: Performance of FrontEnd: time 2.274e-06/0.3281, allocations: 7.938 kB / 0.8363 GB, free: 7.723 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 9.678e-06/0.3281, allocations: 0 / 0.8363 GB, free: 7.723 MB / 0.6544 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 63 * Number of variables: 63 Notification: Performance of Generate backend data structure: time 0.001277/0.3294, allocations: 0.6042 MB / 0.8369 GB, free: 7.07 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 5.016e-05/0.3294, allocations: 8.031 kB / 0.8369 GB, free: 7.062 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0009066/0.3304, allocations: 116.5 kB / 0.837 GB, free: 6.949 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005192/0.3309, allocations: 287.7 kB / 0.8373 GB, free: 6.629 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.344e-05/0.3309, allocations: 12.81 kB / 0.8373 GB, free: 6.617 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 4.979e-05/0.331, allocations: 24.31 kB / 0.8373 GB, free: 6.594 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007405/0.3317, allocations: 419.8 kB / 0.8377 GB, free: 6.152 MB / 0.6544 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.642e-05/0.3317, allocations: 3.984 kB / 0.8377 GB, free: 6.148 MB / 0.6544 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.876e-05/0.3318, allocations: 12 kB / 0.8377 GB, free: 6.137 MB / 0.6544 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.556e-05/0.3319, allocations: 36.53 kB / 0.8377 GB, free: 6.102 MB / 0.6544 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007789/0.3326, allocations: 349.9 kB / 0.8381 GB, free: 5.762 MB / 0.6544 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002659/0.3353, allocations: 2.05 MB / 0.8401 GB, free: 3.52 MB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0008568/0.3362, allocations: 353 kB / 0.8404 GB, free: 3.156 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004143/0.3366, allocations: 181.6 kB / 0.8406 GB, free: 2.973 MB / 0.6544 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001198/0.3367, allocations: 97.09 kB / 0.8407 GB, free: 2.859 MB / 0.6544 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.086e-05/0.3368, allocations: 34.56 kB / 0.8407 GB, free: 2.816 MB / 0.6544 GB Notification: Performance of pre-optimization done (n=22): time 1.452e-06/0.3368, allocations: 0 / 0.8407 GB, free: 2.816 MB / 0.6544 GB Notification: Performance of matching and sorting (n=34): time 0.005768/0.3426, allocations: 1.584 MB / 0.8423 GB, free: 1.199 MB / 0.6544 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.643e-05/0.3427, allocations: 85.05 kB / 0.8423 GB, free: 1.098 MB / 0.6544 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002683/0.3429, allocations: 228.9 kB / 0.8426 GB, free: 0.8672 MB / 0.6544 GB Notification: Performance of collectPreVariables (initialization): time 3.533e-05/0.343, allocations: 37.64 kB / 0.8426 GB, free: 0.8242 MB / 0.6544 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001454/0.3431, allocations: 180 kB / 0.8428 GB, free: 0.6406 MB / 0.6544 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001001/0.3432, allocations: 118.3 kB / 0.8429 GB, free: 0.5234 MB / 0.6544 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000138/0.3434, allocations: 82.05 kB / 0.843 GB, free: 448 kB / 0.6544 GB Notification: Performance of setup shared object (initialization): time 0.0001535/0.3435, allocations: 338.8 kB / 0.8433 GB, free: 100 kB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000452/0.344, allocations: 202.5 kB / 0.8435 GB, free: 15.89 MB / 0.67 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004631/0.3445, allocations: 305 kB / 0.8438 GB, free: 15.55 MB / 0.67 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.000899/0.3454, allocations: 0.5079 MB / 0.8443 GB, free: 15 MB / 0.67 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.467e-06/0.3454, allocations: 4 kB / 0.8443 GB, free: 15 MB / 0.67 GB Notification: Performance of matching and sorting (n=49) (initialization): time 0.00127/0.3467, allocations: 0.6448 MB / 0.8449 GB, free: 14.33 MB / 0.67 GB Notification: Performance of prepare postOptimizeDAE: time 2.916e-05/0.3467, allocations: 15 kB / 0.8449 GB, free: 14.32 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.137e-05/0.3467, allocations: 7.938 kB / 0.8449 GB, free: 14.31 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000538/0.3473, allocations: 139.3 kB / 0.8451 GB, free: 14.16 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000387/0.3477, allocations: 91.88 kB / 0.8451 GB, free: 14.07 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003392/0.3511, allocations: 4.174 MB / 0.8492 GB, free: 9.566 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003038/0.3514, allocations: 36.12 kB / 0.8493 GB, free: 9.531 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.195e-05/0.3514, allocations: 16 kB / 0.8493 GB, free: 9.516 MB / 0.67 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005203/0.352, allocations: 320.8 kB / 0.8496 GB, free: 9.199 MB / 0.67 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004756/0.3524, allocations: 305 kB / 0.8499 GB, free: 8.852 MB / 0.67 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.000887/0.3533, allocations: 0.5076 MB / 0.8504 GB, free: 8.301 MB / 0.67 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.967e-06/0.3534, allocations: 0 / 0.8504 GB, free: 8.301 MB / 0.67 GB Notification: Performance of matching and sorting (n=49) (initialization_lambda0): time 0.001265/0.3546, allocations: 0.6522 MB / 0.851 GB, free: 7.629 MB / 0.67 GB Notification: Performance of prepare postOptimizeDAE: time 1.769e-05/0.3547, allocations: 8 kB / 0.851 GB, free: 7.621 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.255e-06/0.3547, allocations: 4 kB / 0.851 GB, free: 7.617 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004093/0.3551, allocations: 151.6 kB / 0.8512 GB, free: 7.457 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003662/0.3555, allocations: 87.88 kB / 0.8512 GB, free: 7.371 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00319/0.3587, allocations: 4.178 MB / 0.8553 GB, free: 2.863 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003052/0.359, allocations: 35.89 kB / 0.8554 GB, free: 2.828 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.103e-05/0.3591, allocations: 20 kB / 0.8554 GB, free: 2.809 MB / 0.67 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 14 * 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 (45): * Single equations (assignments): 41 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,1,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(1,1), (1,1)} Notification: Performance of prepare postOptimizeDAE: time 0.0002269/0.3593, allocations: 204.8 kB / 0.8556 GB, free: 2.602 MB / 0.67 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001076/0.3594, allocations: 27.72 kB / 0.8556 GB, free: 2.574 MB / 0.67 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001329/0.3607, allocations: 0.5973 MB / 0.8562 GB, free: 1.961 MB / 0.67 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.38e-06/0.3608, allocations: 7.938 kB / 0.8562 GB, free: 1.953 MB / 0.67 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.13e-06/0.3608, allocations: 3.984 kB / 0.8562 GB, free: 1.949 MB / 0.67 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.823e-06/0.3608, allocations: 0 / 0.8562 GB, free: 1.949 MB / 0.67 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002566/0.3634, allocations: 1.333 MB / 0.8575 GB, free: 0.5117 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.801e-06/0.3634, allocations: 4 kB / 0.8575 GB, free: 0.5078 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002524/0.3636, allocations: 63.89 kB / 0.8576 GB, free: 456 kB / 0.67 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004055/0.364, allocations: 151.5 kB / 0.8577 GB, free: 292 kB / 0.67 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.86e-05/0.3641, allocations: 12 kB / 0.8577 GB, free: 280 kB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00331/0.3674, allocations: 4.174 MB / 0.8618 GB, free: 11.77 MB / 0.6856 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.248e-06/0.3674, allocations: 12.12 kB / 0.8618 GB, free: 11.75 MB / 0.6856 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001226/0.3687, allocations: 0.7661 MB / 0.8625 GB, free: 10.93 MB / 0.6856 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001707/0.3688, allocations: 140.8 kB / 0.8627 GB, free: 10.78 MB / 0.6856 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.76e-05/0.3689, allocations: 12 kB / 0.8627 GB, free: 10.77 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003063/0.3692, allocations: 31.95 kB / 0.8627 GB, free: 10.73 MB / 0.6856 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.948e-05/0.3693, allocations: 27.91 kB / 0.8627 GB, free: 10.71 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.528e-05/0.3693, allocations: 19.94 kB / 0.8628 GB, free: 10.69 MB / 0.6856 GB Notification: Performance of sorting global known variables: time 0.0001838/0.3695, allocations: 164.5 kB / 0.8629 GB, free: 10.53 MB / 0.6856 GB Notification: Performance of sort global known variables: time 1.7e-07/0.3695, allocations: 4 kB / 0.8629 GB, free: 10.52 MB / 0.6856 GB Notification: Performance of remove unused functions: time 0.000854/0.3704, allocations: 168 kB / 0.8631 GB, free: 10.36 MB / 0.6856 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 10 * 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 (31): * Single equations (assignments): 27 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,1,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(1,2), (1,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0003026/0.3707, allocations: 131.2 kB / 0.8632 GB, free: 10.22 MB / 0.6856 GB Notification: Performance of simCode: created initialization part: time 0.002306/0.373, allocations: 1.249 MB / 0.8644 GB, free: 8.918 MB / 0.6856 GB Notification: Performance of simCode: created event and clocks part: time 4.007e-06/0.373, allocations: 0 / 0.8644 GB, free: 8.918 MB / 0.6856 GB Notification: Performance of simCode: created simulation system equations: time 0.0007312/0.3738, allocations: 482.2 kB / 0.8649 GB, free: 8.422 MB / 0.6856 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0006086/0.3744, allocations: 64.33 kB / 0.865 GB, free: 8.355 MB / 0.6856 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0014/0.3758, allocations: 0.7529 MB / 0.8657 GB, free: 7.555 MB / 0.6856 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004742/0.3763, allocations: 0.8123 MB / 0.8665 GB, free: 6.715 MB / 0.6856 GB Notification: Performance of simCode: alias equations: time 0.0003105/0.3766, allocations: 114.9 kB / 0.8666 GB, free: 6.602 MB / 0.6856 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 8.143e-05/0.3767, allocations: 27.42 kB / 0.8666 GB, free: 6.574 MB / 0.6856 GB Notification: Performance of SimCode: time 3.41e-07/0.3767, allocations: 4 kB / 0.8666 GB, free: 6.57 MB / 0.6856 GB Notification: Performance of Templates: time 0.01238/0.3891, allocations: 6.41 MB / 0.8729 GB, free: 208 kB / 0.6856 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.makefile (rm -f Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.sim & ./Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACDCConverter.pipe 2>&1)