Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.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/IBPSA 4.0.0-master/package.mo", uses=false)
Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/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(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY")
translateModel(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.000912/0.0009161, allocations: 93.5 kB / 16.02 MB, free: 84 kB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001196/0.001196, allocations: 177.6 kB / 16.92 MB, free: 6.688 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.448/1.448, allocations: 223.2 MB / 241 MB, free: 5.344 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7215/0.7215, allocations: 115.5 MB / 407.6 MB, free: 2.688 MB / 334.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.0005023/0.0005025, allocations: 12 kB / 495.9 MB, free: 6.32 MB / 350.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1866/0.1871, allocations: 77.53 MB / 0.56 GB, free: 9 MB / 430.1 MB
Notification: Performance of NFInst.instantiate(IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY): time 0.01978/0.2069, allocations: 17.53 MB / 0.5771 GB, free: 7.402 MB / 446.1 MB
Notification: Performance of NFInst.instExpressions: time 0.01174/0.2187, allocations: 6.825 MB / 0.5838 GB, free: 0.5586 MB / 446.1 MB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001947/0.2207, allocations: 43.88 kB / 0.5838 GB, free: 0.5156 MB / 446.1 MB
Notification: Performance of NFTyping.typeComponents: time 0.001641/0.2223, allocations: 397.1 kB / 0.5842 GB, free: 128 kB / 446.1 MB
Notification: Performance of NFTyping.typeBindings: time 0.321/0.5434, allocations: 1.39 MB / 0.5856 GB, free: 13.33 MB / 446.1 MB
Notification: Performance of NFTyping.typeClassSections: time 0.003694/0.5472, allocations: 1.001 MB / 0.5865 GB, free: 13.31 MB / 446.1 MB
Notification: Performance of NFFlatten.flatten: time 0.01371/0.5609, allocations: 8.791 MB / 0.5951 GB, free: 13.3 MB / 446.1 MB
Notification: Performance of NFFlatten.resolveConnections: time 0.01511/0.576, allocations: 8.894 MB / 0.6038 GB, free: 11.79 MB / 446.1 MB
Notification: Performance of NFEvalConstants.evaluate: time 0.004412/0.5805, allocations: 1.719 MB / 0.6055 GB, free: 11.26 MB / 446.1 MB
Notification: Performance of NFSimplifyModel.simplify: time 0.005739/0.5862, allocations: 2.742 MB / 0.6082 GB, free: 10.51 MB / 446.1 MB
Notification: Performance of NFPackage.collectConstants: time 0.001391/0.5877, allocations: 246.6 kB / 0.6084 GB, free: 10.51 MB / 446.1 MB
Notification: Performance of NFFlatten.collectFunctions: time 0.003869/0.5915, allocations: 1.188 MB / 0.6096 GB, free: 10.26 MB / 446.1 MB
Notification: Performance of NFScalarize.scalarize: time 0.003722/0.5953, allocations: 1.957 MB / 0.6115 GB, free: 9.273 MB / 446.1 MB
Notification: Performance of NFVerifyModel.verify: time 0.004669/0.6, allocations: 1.864 MB / 0.6133 GB, free: 8 MB / 446.1 MB
Notification: Performance of NFConvertDAE.convert: time 0.009761/0.6098, allocations: 7.75 MB / 0.6209 GB, free: 2.625 MB / 446.1 MB
Notification: Performance of FrontEnd - DAE generated: time 4.849e-06/0.6098, allocations: 0 / 0.6209 GB, free: 2.625 MB / 446.1 MB
Notification: Performance of FrontEnd: time 2.705e-06/0.6098, allocations: 0 / 0.6209 GB, free: 2.625 MB / 446.1 MB
Notification: Performance of Transformations before backend: time 0.0002084/0.61, allocations: 0 / 0.6209 GB, free: 2.625 MB / 446.1 MB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 1034
 * Number of variables: 1034
Notification: Performance of Generate backend data structure: time 0.007467/0.6175, allocations: 3.193 MB / 0.624 GB, free: 280 kB / 446.1 MB
Notification: Performance of prepare preOptimizeDAE: time 4.325e-05/0.6175, allocations: 8.031 kB / 0.624 GB, free: 272 kB / 446.1 MB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01429/0.6318, allocations: 2.438 MB / 0.6264 GB, free: 13.82 MB / 462.1 MB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.005712/0.6376, allocations: 2.224 MB / 0.6285 GB, free: 11.57 MB / 462.1 MB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003606/0.638, allocations: 287 kB / 0.6288 GB, free: 11.3 MB / 462.1 MB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001871/0.6399, allocations: 362.1 kB / 0.6292 GB, free: 10.96 MB / 462.1 MB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01999/0.6599, allocations: 7.393 MB / 0.6364 GB, free: 3.469 MB / 462.1 MB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001056/0.66, allocations: 0 / 0.6364 GB, free: 3.469 MB / 462.1 MB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0007257/0.6608, allocations: 157.9 kB / 0.6365 GB, free: 3.324 MB / 462.1 MB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0005253/0.6613, allocations: 342.3 kB / 0.6368 GB, free: 2.988 MB / 462.1 MB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01909/0.6804, allocations: 7.193 MB / 0.6439 GB, free: 11.79 MB / 478.1 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 0.04206/0.7225, allocations: 28.65 MB / 0.6718 GB, free: 12.83 MB / 0.4981 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.008753/0.7313, allocations: 4.179 MB / 0.6759 GB, free: 8.434 MB / 0.4981 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.005999/0.7374, allocations: 2.322 MB / 0.6782 GB, free: 6.102 MB / 0.4981 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.00034/0.7377, allocations: 137.5 kB / 0.6783 GB, free: 5.961 MB / 0.4981 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.546e-05/0.7378, allocations: 64.5 kB / 0.6784 GB, free: 5.887 MB / 0.4981 GB
Notification: Performance of pre-optimization done (n=198): time 3.577e-06/0.7378, allocations: 0 / 0.6784 GB, free: 5.887 MB / 0.4981 GB
Notification: Performance of matching and sorting (n=257): time 0.1093/0.8471, allocations: 30.23 MB / 0.7079 GB, free: 7.625 MB / 0.5294 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001353/0.8473, allocations: 239.6 kB / 0.7081 GB, free: 7.344 MB / 0.5294 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002322/0.8496, allocations: 1.485 MB / 0.7096 GB, free: 5.852 MB / 0.5294 GB
Notification: Performance of collectPreVariables (initialization): time 0.0003665/0.85, allocations: 65.7 kB / 0.7097 GB, free: 5.781 MB / 0.5294 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001024/0.851, allocations: 1.567 MB / 0.7112 GB, free: 4.203 MB / 0.5294 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0009924/0.852, allocations: 0.8698 MB / 0.712 GB, free: 3.34 MB / 0.5294 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0005184/0.8526, allocations: 252.2 kB / 0.7123 GB, free: 3.086 MB / 0.5294 GB
Notification: Performance of setup shared object (initialization): time 9.982e-05/0.8527, allocations: 305.1 kB / 0.7126 GB, free: 2.785 MB / 0.5294 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005993/0.8587, allocations: 2.551 MB / 0.7151 GB, free: 232 kB / 0.5294 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006662/0.8654, allocations: 3.454 MB / 0.7184 GB, free: 12.39 MB / 0.545 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0132/0.8786, allocations: 6.149 MB / 0.7244 GB, free: 5.84 MB / 0.545 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.05e-05/0.8786, allocations: 11.94 kB / 0.7244 GB, free: 5.828 MB / 0.545 GB
Notification: Performance of matching and sorting (n=398) (initialization): time 0.02922/0.9079, allocations: 10.29 MB / 0.7345 GB, free: 11.48 MB / 0.5606 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0006654/0.9086, allocations: 0.8744 MB / 0.7353 GB, free: 10.23 MB / 0.5606 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.575e-05/0.9086, allocations: 35.98 kB / 0.7354 GB, free: 10.19 MB / 0.5606 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.02333/0.932, allocations: 5.748 MB / 0.741 GB, free: 4.43 MB / 0.5606 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004755/0.9368, allocations: 0.9984 MB / 0.742 GB, free: 3.43 MB / 0.5606 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04028/0.9771, allocations: 21.62 MB / 0.7631 GB, free: 13.57 MB / 0.5919 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004807/0.9819, allocations: 0.573 MB / 0.7636 GB, free: 13 MB / 0.5919 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000543/0.9825, allocations: 151.9 kB / 0.7638 GB, free: 12.85 MB / 0.5919 GB
Notification: Performance of prepare postOptimizeDAE: time 1.801e-05/0.9825, allocations: 4 kB / 0.7638 GB, free: 12.84 MB / 0.5919 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.02372/1.006, allocations: 8.482 MB / 0.7721 GB, free: 4.312 MB / 0.5919 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.164e-05/1.006, allocations: 28 kB / 0.7721 GB, free: 4.285 MB / 0.5919 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.01507/1.021, allocations: 3.532 MB / 0.7755 GB, free: 0.7422 MB / 0.5919 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005397/1.027, allocations: 1.131 MB / 0.7767 GB, free: 15.61 MB / 0.6075 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02199/1.049, allocations: 11.82 MB / 0.7882 GB, free: 3.66 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004566/1.053, allocations: 0.5303 MB / 0.7887 GB, free: 3.129 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006225/1.054, allocations: 159.9 kB / 0.7889 GB, free: 2.973 MB / 0.6075 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 121
 * 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 (304):
 * Single equations (assignments): 302
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 2
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 1 system
   {(6,42,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(6,42)}
Notification: Performance of prepare postOptimizeDAE: time 0.003315/1.057, allocations: 1.626 MB / 0.7905 GB, free: 1.336 MB / 0.6075 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007878/1.058, allocations: 197.7 kB / 0.7906 GB, free: 1.141 MB / 0.6075 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02946/1.088, allocations: 9.86 MB / 0.8003 GB, free: 7.227 MB / 0.6231 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.642e-05/1.088, allocations: 24 kB / 0.8003 GB, free: 7.203 MB / 0.6231 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 3.429e-05/1.088, allocations: 15.94 kB / 0.8003 GB, free: 7.188 MB / 0.6231 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.188e-05/1.088, allocations: 15.95 kB / 0.8003 GB, free: 7.172 MB / 0.6231 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03882/1.127, allocations: 15.2 MB / 0.8152 GB, free: 7.797 MB / 0.6387 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.293e-05/1.127, allocations: 12 kB / 0.8152 GB, free: 7.785 MB / 0.6387 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003789/1.131, allocations: 0.7295 MB / 0.8159 GB, free: 7.055 MB / 0.6387 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.02221/1.153, allocations: 5.42 MB / 0.8212 GB, free: 1.625 MB / 0.6387 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0007269/1.154, allocations: 71.95 kB / 0.8213 GB, free: 1.555 MB / 0.6387 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.344/1.498, allocations: 20.44 MB / 0.8412 GB, free: 204.7 MB / 0.6387 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.343e-05/1.498, allocations: 15.38 kB / 0.8412 GB, free: 204.7 MB / 0.6387 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02475/1.522, allocations: 9.389 MB / 0.8504 GB, free: 201.9 MB / 0.6387 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0018/1.524, allocations: 0.6946 MB / 0.8511 GB, free: 201.7 MB / 0.6387 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005256/1.525, allocations: 58.69 kB / 0.8511 GB, free: 201.6 MB / 0.6387 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003683/1.529, allocations: 0.5105 MB / 0.8516 GB, free: 201.6 MB / 0.6387 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0008784/1.529, allocations: 219.8 kB / 0.8518 GB, free: 201.6 MB / 0.6387 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002182/1.53, allocations: 89.25 kB / 0.8519 GB, free: 201.5 MB / 0.6387 GB
Notification: Performance of sorting global known variables: time 0.001586/1.531, allocations: 1.058 MB / 0.853 GB, free: 201.2 MB / 0.6387 GB
Notification: Performance of sort global known variables: time 2.71e-07/1.531, allocations: 0 / 0.853 GB, free: 201.2 MB / 0.6387 GB
Notification: Performance of remove unused functions: time 0.005705/1.537, allocations: 1.779 MB / 0.8547 GB, free: 201 MB / 0.6387 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 40
 * 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 (162):
 * Single equations (assignments): 160
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 2
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 1 system
   {(6,42,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(6,42)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.0004096/1.537, allocations: 178.5 kB / 0.8549 GB, free: 200.9 MB / 0.6387 GB
Notification: Performance of simCode: created initialization part: time 0.02764/1.565, allocations: 11.37 MB / 0.866 GB, free: 197.5 MB / 0.6387 GB
Notification: Performance of simCode: created event and clocks part: time 1.523e-05/1.565, allocations: 0 / 0.866 GB, free: 197.5 MB / 0.6387 GB
Notification: Performance of simCode: created simulation system equations: time 0.01065/1.576, allocations: 4.147 MB / 0.87 GB, free: 195.5 MB / 0.6387 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004357/1.58, allocations: 275.7 kB / 0.8703 GB, free: 195.3 MB / 0.6387 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02564/1.606, allocations: 11.53 MB / 0.8815 GB, free: 184.7 MB / 0.6387 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003486/1.609, allocations: 2.86 MB / 0.8843 GB, free: 181.9 MB / 0.6387 GB
Notification: Performance of simCode: alias equations: time 0.006168/1.616, allocations: 1.675 MB / 0.886 GB, free: 180.2 MB / 0.6387 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008644/1.616, allocations: 175.3 kB / 0.8861 GB, free: 180 MB / 0.6387 GB
Notification: Performance of SimCode: time 1.703e-06/1.616, allocations: 0 / 0.8861 GB, free: 180 MB / 0.6387 GB
Notification: Performance of Templates: time 0.09166/1.708, allocations: 67.17 MB / 0.9517 GB, free: 113.1 MB / 0.6387 GB
make -j1 -f IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.makefile
(rm -f IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.pipe ; mkfifo IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.pipe >> ../files/IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.sim & ./IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY  -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepDown.DY.pipe 2>&1)