Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.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 8.1.4-maint.8.1.x/package.mo", uses=false) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.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.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD") translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001373/0.00138, allocations: 103.4 kB / 15.33 MB, free: 0.5078 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001675/0.001675, allocations: 192.1 kB / 16.25 MB, free: 6.617 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.631/1.631, allocations: 205.1 MB / 222.1 MB, free: 4.734 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.825/1.825, allocations: 292.2 MB / 0.5485 GB, free: 13.63 MB / 462.1 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 0.001464/0.001464, allocations: 61.8 kB / 0.671 GB, free: 26.26 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2754/0.2768, allocations: 114.6 MB / 0.7829 GB, free: 13.89 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD): time 0.01974/0.2966, allocations: 16.24 MB / 0.7987 GB, free: 13.59 MB / 0.6231 GB Notification: Performance of NFInst.instExpressions: time 0.01075/0.3075, allocations: 5.881 MB / 0.8045 GB, free: 7.684 MB / 0.6231 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001885/0.3094, allocations: 39.88 kB / 0.8045 GB, free: 7.645 MB / 0.6231 GB Notification: Performance of NFTyping.typeComponents: time 0.004904/0.3144, allocations: 1.268 MB / 0.8057 GB, free: 6.375 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.00408/0.3185, allocations: 0.9499 MB / 0.8067 GB, free: 5.422 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.004045/0.3225, allocations: 0.9522 MB / 0.8076 GB, free: 4.469 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.005628/0.3282, allocations: 4.155 MB / 0.8117 GB, free: 312 kB / 0.6231 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01145/0.3397, allocations: 6.574 MB / 0.8181 GB, free: 9.66 MB / 0.6387 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003641/0.3434, allocations: 1.847 MB / 0.8199 GB, free: 7.809 MB / 0.6387 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004107/0.3475, allocations: 2.306 MB / 0.8221 GB, free: 5.496 MB / 0.6387 GB Notification: Performance of NFPackage.collectConstants: time 0.001501/0.349, allocations: 432 kB / 0.8225 GB, free: 5.074 MB / 0.6387 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003343/0.3524, allocations: 1.123 MB / 0.8236 GB, free: 3.949 MB / 0.6387 GB Notification: Performance of NFScalarize.scalarize: time 0.003074/0.3555, allocations: 1.708 MB / 0.8253 GB, free: 2.238 MB / 0.6387 GB Notification: Performance of NFVerifyModel.verify: time 0.004072/0.3596, allocations: 1.681 MB / 0.827 GB, free: 0.5508 MB / 0.6387 GB Notification: Performance of NFConvertDAE.convert: time 0.007998/0.3676, allocations: 6.33 MB / 0.8331 GB, free: 10.2 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 7.965e-06/0.3677, allocations: 0 / 0.8331 GB, free: 10.2 MB / 0.6544 GB Notification: Performance of FrontEnd: time 1.583e-06/0.3677, allocations: 0 / 0.8331 GB, free: 10.2 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 0.000237/0.3679, allocations: 0 / 0.8331 GB, free: 10.2 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: 769 * Number of variables: 769 Notification: Performance of Generate backend data structure: time 0.01013/0.378, allocations: 2.951 MB / 0.836 GB, free: 7.191 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 5.446e-05/0.3781, allocations: 8.031 kB / 0.836 GB, free: 7.184 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01102/0.3891, allocations: 2.007 MB / 0.838 GB, free: 5.172 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003845/0.393, allocations: 1.589 MB / 0.8395 GB, free: 3.539 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002078/0.3933, allocations: 218.2 kB / 0.8397 GB, free: 3.324 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00095/0.3942, allocations: 280.4 kB / 0.84 GB, free: 3.051 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01403/0.4083, allocations: 5.696 MB / 0.8456 GB, free: 13.26 MB / 0.67 GB Notification: Performance of preOpt findStateOrder (simulation): time 5.515e-05/0.4083, allocations: 0 / 0.8456 GB, free: 13.26 MB / 0.67 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003799/0.4087, allocations: 116 kB / 0.8457 GB, free: 13.14 MB / 0.67 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.000328/0.4091, allocations: 204.7 kB / 0.8459 GB, free: 12.94 MB / 0.67 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01462/0.4237, allocations: 5.828 MB / 0.8516 GB, free: 7.098 MB / 0.67 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.02927/0.453, allocations: 22.58 MB / 0.8736 GB, free: 14.48 MB / 0.7012 GB Notification: Performance of preOpt comSubExp (simulation): time 0.005787/0.4588, allocations: 3.017 MB / 0.8766 GB, free: 11.3 MB / 0.7012 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.004739/0.4636, allocations: 1.944 MB / 0.8785 GB, free: 9.336 MB / 0.7012 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002323/0.4639, allocations: 122 kB / 0.8786 GB, free: 9.199 MB / 0.7012 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.841e-05/0.4639, allocations: 55.5 kB / 0.8786 GB, free: 9.137 MB / 0.7012 GB Notification: Performance of pre-optimization done (n=132): time 3.356e-06/0.4639, allocations: 0 / 0.8786 GB, free: 9.137 MB / 0.7012 GB Notification: Performance of matching and sorting (n=174): time 0.03965/0.5036, allocations: 12.82 MB / 0.8912 GB, free: 12.27 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.000118/0.5038, allocations: 230.9 kB / 0.8914 GB, free: 12 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001356/0.5051, allocations: 0.9608 MB / 0.8923 GB, free: 11.03 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.000335/0.5055, allocations: 57.69 kB / 0.8924 GB, free: 10.96 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007564/0.5062, allocations: 1.154 MB / 0.8935 GB, free: 9.793 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.000833/0.5071, allocations: 0.5892 MB / 0.8941 GB, free: 9.195 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0008359/0.5079, allocations: 459.7 kB / 0.8945 GB, free: 8.738 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0001971/0.5081, allocations: 334 kB / 0.8948 GB, free: 8.406 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004578/0.5127, allocations: 1.879 MB / 0.8967 GB, free: 6.516 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004971/0.5177, allocations: 2.459 MB / 0.8991 GB, free: 3.793 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.009752/0.5275, allocations: 4.37 MB / 0.9033 GB, free: 15.17 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.688e-05/0.5275, allocations: 8 kB / 0.9033 GB, free: 15.16 MB / 0.7325 GB Notification: Performance of matching and sorting (n=282) (initialization): time 0.01366/0.5412, allocations: 5.431 MB / 0.9086 GB, free: 9.711 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 5.358e-05/0.5413, allocations: 12 kB / 0.9087 GB, free: 9.699 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.19e-05/0.5413, allocations: 16 kB / 0.9087 GB, free: 9.684 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003482/0.5448, allocations: 1.244 MB / 0.9099 GB, free: 8.434 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003346/0.5482, allocations: 0.7292 MB / 0.9106 GB, free: 7.703 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.5279/1.076, allocations: 11.49 MB / 0.9218 GB, free: 126.3 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003568/1.08, allocations: 469.8 kB / 0.9223 GB, free: 126.3 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004653/1.08, allocations: 109.7 kB / 0.9224 GB, free: 126.3 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.006741/1.087, allocations: 2.943 MB / 0.9252 GB, free: 125.5 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.005343/1.092, allocations: 2.451 MB / 0.9276 GB, free: 124.2 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.009873/1.102, allocations: 4.352 MB / 0.9319 GB, free: 122.4 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.668e-05/1.102, allocations: 9.062 kB / 0.9319 GB, free: 122.4 MB / 0.7325 GB Notification: Performance of matching and sorting (n=282) (initialization_lambda0): time 0.01524/1.118, allocations: 5.355 MB / 0.9371 GB, free: 120.7 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 4.988e-05/1.118, allocations: 12.86 kB / 0.9371 GB, free: 120.7 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.652e-05/1.118, allocations: 18.19 kB / 0.9372 GB, free: 120.7 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003416/1.121, allocations: 1.161 MB / 0.9383 GB, free: 120.5 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003431/1.125, allocations: 0.7322 MB / 0.939 GB, free: 120.4 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01421/1.139, allocations: 11.31 MB / 0.9501 GB, free: 113.9 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003484/1.142, allocations: 452.7 kB / 0.9505 GB, free: 113.8 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004769/1.143, allocations: 112.5 kB / 0.9506 GB, free: 113.8 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 81 * 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 (212): * Single equations (assignments): 210 * 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): 2 systems {(7,29,63.3%), (6,30,83.3%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0007287/1.144, allocations: 302.6 kB / 0.9509 GB, free: 113.5 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000485/1.144, allocations: 124.4 kB / 0.951 GB, free: 113.5 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01216/1.156, allocations: 4.966 MB / 0.9559 GB, free: 111.5 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.405e-05/1.156, allocations: 15.81 kB / 0.9559 GB, free: 111.5 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.593e-05/1.157, allocations: 23.66 kB / 0.9559 GB, free: 111.5 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.007e-05/1.157, allocations: 8.953 kB / 0.9559 GB, free: 111.5 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01683/1.173, allocations: 8.955 MB / 0.9646 GB, free: 105.9 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.974e-05/1.173, allocations: 7.875 kB / 0.9647 GB, free: 105.9 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002288/1.176, allocations: 0.5329 MB / 0.9652 GB, free: 105.7 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.002314/1.178, allocations: 0.9629 MB / 0.9661 GB, free: 105.3 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002429/1.178, allocations: 55.83 kB / 0.9662 GB, free: 105.2 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01133/1.19, allocations: 10.9 MB / 0.9768 GB, free: 95.62 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.516e-06/1.19, allocations: 12.06 kB / 0.9768 GB, free: 95.61 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.009612/1.199, allocations: 4.763 MB / 0.9815 GB, free: 90.73 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0009116/1.2, allocations: 0.4953 MB / 0.982 GB, free: 90.22 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002715/1.201, allocations: 39.98 kB / 0.982 GB, free: 90.18 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002372/1.203, allocations: 395.4 kB / 0.9824 GB, free: 89.79 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004089/1.203, allocations: 160.9 kB / 0.9825 GB, free: 89.63 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001435/1.204, allocations: 67.95 kB / 0.9826 GB, free: 89.57 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0007498/1.204, allocations: 0.6903 MB / 0.9833 GB, free: 88.88 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.4e-07/1.204, allocations: 0 / 0.9833 GB, free: 88.88 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.003745/1.208, allocations: 1.194 MB / 0.9844 GB, free: 87.68 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 32 * 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 (103): * Single equations (assignments): 101 * 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): 2 systems {(4,32,100.0%), (6,30,83.3%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0003108/1.208, allocations: 151.7 kB / 0.9846 GB, free: 87.53 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.01788/1.226, allocations: 8.642 MB / 0.993 GB, free: 78.86 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 1.53e-05/1.226, allocations: 0.5 kB / 0.993 GB, free: 78.86 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.005422/1.232, allocations: 2.634 MB / 0.9956 GB, free: 76.21 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00155/1.233, allocations: 194.2 kB / 0.9958 GB, free: 76.03 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01799/1.251, allocations: 8.577 MB / 1.004 GB, free: 67.34 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002019/1.253, allocations: 2.312 MB / 1.006 GB, free: 65 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.003768/1.257, allocations: 1.225 MB / 1.008 GB, free: 63.77 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005464/1.258, allocations: 127.3 kB / 1.008 GB, free: 63.64 MB / 0.7325 GB Notification: Performance of SimCode: time 1.393e-06/1.258, allocations: 0 / 1.008 GB, free: 63.64 MB / 0.7325 GB Notification: Performance of Templates: time 0.0513/1.309, allocations: 36.86 MB / 1.044 GB, free: 27 MB / 0.7325 GB make -j1 -f Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.makefile (rm -f Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe ; mkfifo Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe ; head -c 1048576 < Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe >> ../files/Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.sim & ./Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe 2>&1)