Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_10_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL.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/Buildings 10.1.1-maint.10.0.x/package.mo", uses=false) Using package Buildings with version 10.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.x/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: "" <> buildModelFMU(Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL,fileNamePrefix="Buildings_10_Buildings_Fluid_HeatPumps_Validation_Carnot_y_etaPL",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL,fileNamePrefix="Buildings_10_Buildings_Fluid_HeatPumps_Validation_Carnot_y_etaPL",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001458/0.001463, allocations: 108 kB / 15.6 MB, free: 132 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001694/0.001694, allocations: 193.6 kB / 16.53 MB, free: 6.391 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.317/1.317, allocations: 222.9 MB / 240.2 MB, free: 4.43 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.x/package.mo): time 2.382/2.382, allocations: 437.1 MB / 0.7104 GB, free: 5.105 MB / 0.5606 GB Notification: Performance of FrontEnd - loaded program: time 0.00124/0.00124, allocations: 75.89 kB / 0.8694 GB, free: 4.586 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4939/0.4952, allocations: 151.6 MB / 1.017 GB, free: 2.512 MB / 0.7637 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL): time 0.0672/0.5624, allocations: 75.24 MB / 1.091 GB, free: 7.012 MB / 0.8419 GB Notification: Performance of NFInst.instExpressions: time 0.01729/0.5797, allocations: 15.17 MB / 1.106 GB, free: 7.805 MB / 0.8575 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001789/0.5815, allocations: 67.62 kB / 1.106 GB, free: 7.738 MB / 0.8575 GB Notification: Performance of NFTyping.typeComponents: time 0.00198/0.5835, allocations: 0.8267 MB / 1.107 GB, free: 6.906 MB / 0.8575 GB Notification: Performance of NFTyping.typeBindings: time 0.005624/0.5892, allocations: 2.597 MB / 1.109 GB, free: 4.297 MB / 0.8575 GB Notification: Performance of NFTyping.typeClassSections: time 0.002883/0.5921, allocations: 1.379 MB / 1.11 GB, free: 2.93 MB / 0.8575 GB Notification: Performance of NFFlatten.flatten: time 0.004443/0.5965, allocations: 4.385 MB / 1.115 GB, free: 14.53 MB / 0.8731 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001775/0.5983, allocations: 1.445 MB / 1.116 GB, free: 13.05 MB / 0.8731 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002931/0.6013, allocations: 1.63 MB / 1.118 GB, free: 11.42 MB / 0.8731 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001672/0.6029, allocations: 1.206 MB / 1.119 GB, free: 10.21 MB / 0.8731 GB Notification: Performance of NFPackage.collectConstants: time 0.0003376/0.6033, allocations: 164 kB / 1.119 GB, free: 10.05 MB / 0.8731 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002664/0.606, allocations: 1.412 MB / 1.12 GB, free: 8.633 MB / 0.8731 GB Notification: Performance of NFScalarize.scalarize: time 0.0004331/0.6064, allocations: 402.6 kB / 1.121 GB, free: 8.238 MB / 0.8731 GB Notification: Performance of NFVerifyModel.verify: time 0.0009662/0.6074, allocations: 0.9099 MB / 1.122 GB, free: 7.324 MB / 0.8731 GB Notification: Performance of NFConvertDAE.convert: time 0.003208/0.6106, allocations: 2.836 MB / 1.124 GB, free: 4.48 MB / 0.8731 GB Notification: Performance of FrontEnd - DAE generated: time 3.657e-06/0.6106, allocations: 0 / 1.124 GB, free: 4.48 MB / 0.8731 GB Notification: Performance of FrontEnd: time 2.594e-06/0.6106, allocations: 4 kB / 1.124 GB, free: 4.477 MB / 0.8731 GB Notification: Performance of Transformations before backend: time 1.528e-05/0.6106, allocations: 3.938 kB / 1.124 GB, free: 4.473 MB / 0.8731 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 240 * Number of variables: 240 Notification: Performance of Generate backend data structure: time 0.003125/0.6138, allocations: 2.1 MB / 1.127 GB, free: 2.309 MB / 0.8731 GB Notification: Performance of prepare preOptimizeDAE: time 3.44e-05/0.6138, allocations: 12.03 kB / 1.127 GB, free: 2.297 MB / 0.8731 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001517/0.614, allocations: 144.1 kB / 1.127 GB, free: 2.148 MB / 0.8731 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007444/0.6147, allocations: 230.9 kB / 1.127 GB, free: 1.922 MB / 0.8731 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001998/0.6167, allocations: 1.446 MB / 1.128 GB, free: 428 kB / 0.8731 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.302e-05/0.6168, allocations: 81.98 kB / 1.128 GB, free: 348 kB / 0.8731 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001394/0.6169, allocations: 104 kB / 1.129 GB, free: 244 kB / 0.8731 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001769/0.6187, allocations: 1.104 MB / 1.13 GB, free: 15.1 MB / 0.8887 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.147e-05/0.6188, allocations: 0 / 1.13 GB, free: 15.1 MB / 0.8887 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.116e-05/0.6189, allocations: 40 kB / 1.13 GB, free: 15.06 MB / 0.8887 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.084e-05/0.6189, allocations: 24 kB / 1.13 GB, free: 15.04 MB / 0.8887 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001795/0.6207, allocations: 0.8978 MB / 1.131 GB, free: 14.14 MB / 0.8887 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 0.005026/0.6257, allocations: 4.947 MB / 1.135 GB, free: 8.906 MB / 0.8887 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001295/0.627, allocations: 0.6196 MB / 1.136 GB, free: 8.277 MB / 0.8887 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007026/0.6277, allocations: 346.3 kB / 1.136 GB, free: 7.938 MB / 0.8887 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005546/0.6283, allocations: 0.8277 MB / 1.137 GB, free: 6.926 MB / 0.8887 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.824e-05/0.6283, allocations: 51.05 kB / 1.137 GB, free: 6.867 MB / 0.8887 GB Notification: Performance of pre-optimization done (n=62): time 2.976e-06/0.6284, allocations: 0 / 1.137 GB, free: 6.867 MB / 0.8887 GB Notification: Performance of matching and sorting (n=62): time 0.004548/0.6329, allocations: 1.401 MB / 1.139 GB, free: 5.438 MB / 0.8887 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.221e-05/0.633, allocations: 59.97 kB / 1.139 GB, free: 5.367 MB / 0.8887 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001301/0.6343, allocations: 1.226 MB / 1.14 GB, free: 4.125 MB / 0.8887 GB Notification: Performance of collectPreVariables (initialization): time 5.292e-05/0.6343, allocations: 41.7 kB / 1.14 GB, free: 4.078 MB / 0.8887 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004578/0.6348, allocations: 0.6142 MB / 1.14 GB, free: 3.457 MB / 0.8887 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001626/0.635, allocations: 212.9 kB / 1.141 GB, free: 3.246 MB / 0.8887 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002217/0.6352, allocations: 162.5 kB / 1.141 GB, free: 3.082 MB / 0.8887 GB Notification: Performance of setup shared object (initialization): time 0.000114/0.6353, allocations: 337.9 kB / 1.141 GB, free: 2.746 MB / 0.8887 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006468/0.636, allocations: 292.7 kB / 1.141 GB, free: 2.457 MB / 0.8887 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007887/0.6368, allocations: 491.9 kB / 1.142 GB, free: 1.898 MB / 0.8887 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001342/0.6381, allocations: 0.7081 MB / 1.143 GB, free: 1.141 MB / 0.8887 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.946e-06/0.6381, allocations: 0 / 1.143 GB, free: 1.141 MB / 0.8887 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.004559/0.6427, allocations: 1.269 MB / 1.144 GB, free: 15.86 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 1.765e-05/0.6427, allocations: 8 kB / 1.144 GB, free: 15.85 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.432e-06/0.6427, allocations: 0 / 1.144 GB, free: 15.85 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006434/0.6434, allocations: 157.1 kB / 1.144 GB, free: 15.7 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005604/0.6439, allocations: 151.8 kB / 1.144 GB, free: 15.55 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0007926/0.6447, allocations: 0.7124 MB / 1.145 GB, free: 14.81 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008684/0.6456, allocations: 127 kB / 1.145 GB, free: 14.68 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.724e-05/0.6457, allocations: 28 kB / 1.145 GB, free: 14.66 MB / 0.9044 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0009441/0.6466, allocations: 0.5605 MB / 1.145 GB, free: 14.09 MB / 0.9044 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0007797/0.6474, allocations: 495.8 kB / 1.146 GB, free: 13.54 MB / 0.9044 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001309/0.6488, allocations: 0.7004 MB / 1.147 GB, free: 12.79 MB / 0.9044 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.004e-06/0.6488, allocations: 0 / 1.147 GB, free: 12.79 MB / 0.9044 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.00444/0.6532, allocations: 1.265 MB / 1.148 GB, free: 11.51 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 1.239e-05/0.6532, allocations: 8 kB / 1.148 GB, free: 11.5 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.907e-06/0.6532, allocations: 3.938 kB / 1.148 GB, free: 11.5 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005344/0.6538, allocations: 153.2 kB / 1.148 GB, free: 11.34 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005564/0.6544, allocations: 155.8 kB / 1.148 GB, free: 11.19 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0007768/0.6551, allocations: 0.7239 MB / 1.149 GB, free: 10.44 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000887/0.656, allocations: 107.4 kB / 1.149 GB, free: 10.34 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.743e-05/0.6561, allocations: 27.98 kB / 1.149 GB, free: 10.31 MB / 0.9044 GB 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 (77): * Single equations (assignments): 76 * 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 {(1,11)} Notification: Performance of prepare postOptimizeDAE: time 0.0001844/0.6563, allocations: 228.2 kB / 1.149 GB, free: 10.08 MB / 0.9044 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002098/0.6565, allocations: 138.3 kB / 1.149 GB, free: 9.941 MB / 0.9044 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004536/0.6611, allocations: 1.256 MB / 1.151 GB, free: 8.668 MB / 0.9044 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.273e-05/0.6611, allocations: 7.984 kB / 1.151 GB, free: 8.66 MB / 0.9044 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.879e-06/0.6611, allocations: 0 / 1.151 GB, free: 8.66 MB / 0.9044 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.004083/0.6652, allocations: 1.092 MB / 1.152 GB, free: 7.535 MB / 0.9044 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003554/0.6687, allocations: 2.31 MB / 1.154 GB, free: 5.113 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.23e-06/0.6688, allocations: 7.938 kB / 1.154 GB, free: 5.105 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004532/0.6692, allocations: 111.9 kB / 1.154 GB, free: 4.996 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005352/0.6698, allocations: 145 kB / 1.154 GB, free: 4.852 MB / 0.9044 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.19e-05/0.6698, allocations: 27.94 kB / 1.154 GB, free: 4.824 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.000744/0.6706, allocations: 0.7006 MB / 1.155 GB, free: 4.098 MB / 0.9044 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.948e-06/0.6706, allocations: 12 kB / 1.155 GB, free: 4.086 MB / 0.9044 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002607/0.6732, allocations: 1.407 MB / 1.156 GB, free: 2.613 MB / 0.9044 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004204/0.6736, allocations: 311.2 kB / 1.157 GB, free: 2.289 MB / 0.9044 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001855/0.6738, allocations: 16 kB / 1.157 GB, free: 2.273 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007763/0.6746, allocations: 52 kB / 1.157 GB, free: 2.223 MB / 0.9044 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001054/0.6747, allocations: 60.23 kB / 1.157 GB, free: 2.164 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.722e-05/0.6748, allocations: 31.98 kB / 1.157 GB, free: 2.133 MB / 0.9044 GB Notification: Performance of sorting global known variables: time 0.001101/0.6759, allocations: 0.8896 MB / 1.158 GB, free: 1.242 MB / 0.9044 GB Notification: Performance of sort global known variables: time 1.3e-07/0.6759, allocations: 0 / 1.158 GB, free: 1.242 MB / 0.9044 GB Notification: Performance of remove unused functions: time 0.001585/0.6775, allocations: 0.7057 MB / 1.158 GB, free: 0.5352 MB / 0.9044 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 2 (heaPum.con.vol.dynBal.U,heaPum.eva.vol.dynBal.U) * 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 (55): * Single equations (assignments): 50 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * 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 {(1,11)} Notification: Performance of Backend phase and start with SimCode phase: time 0.003607/0.6811, allocations: 2.299 MB / 1.161 GB, free: 14.17 MB / 0.92 GB Notification: Performance of simCode: created initialization part: time 0.002707/0.6838, allocations: 1.16 MB / 1.162 GB, free: 13.01 MB / 0.92 GB Notification: Performance of simCode: created event and clocks part: time 3.206e-06/0.6838, allocations: 0 / 1.162 GB, free: 13.01 MB / 0.92 GB Notification: Performance of simCode: created simulation system equations: time 0.0008852/0.6847, allocations: 395.3 kB / 1.162 GB, free: 12.63 MB / 0.92 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003266/0.688, allocations: 0.8025 MB / 1.163 GB, free: 11.86 MB / 0.92 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01904/0.7071, allocations: 10.52 MB / 1.173 GB, free: 0.8281 MB / 0.92 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006985/0.7078, allocations: 1.164 MB / 1.174 GB, free: 15.63 MB / 0.9356 GB Notification: Performance of simCode: alias equations: time 0.00116/0.709, allocations: 310.9 kB / 1.175 GB, free: 15.32 MB / 0.9356 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006323/0.7096, allocations: 0.5149 MB / 1.175 GB, free: 14.81 MB / 0.9356 GB Notification: Performance of SimCode: time 4.1e-07/0.7096, allocations: 7.938 kB / 1.175 GB, free: 14.8 MB / 0.9356 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.3312/1.041, allocations: 42.22 MB / 1.216 GB, free: 5.113 MB / 0.9669 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.04/14.08, allocations: 4.703 kB / 1.216 GB, free: 5.109 MB / 0.9669 GB (rm -f Buildings_10_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL.pipe ; mkfifo Buildings_10_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL.pipe ; head -c 1048576 < Buildings_10_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL.pipe >> ../files/Buildings_10_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_10_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL_res.mat --tempDir=temp_Buildings_10_Buildings_Fluid_HeatPumps_Validation_Carnot_y_etaPL_fmu --startTime=0 --stopTime=3600 --timeout=50 --tolerance=1e-06 Buildings_10_Buildings_Fluid_HeatPumps_Validation_Carnot_y_etaPL.fmu > Buildings_10_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaPL.pipe 2>&1)