Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y.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/BuildSysPro 3.6.0/package.mo", uses=false) Using package BuildSysPro with version 3.5.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/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(BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y") translateModel(BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001032/0.001032, allocations: 105.7 kB / 16.35 MB, free: 5.824 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0009757/0.0009758, allocations: 190.5 kB / 17.29 MB, free: 5.48 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.34/1.34, allocations: 222.9 MB / 241 MB, free: 15.14 MB / 206.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/package.mo): time 0.8311/0.8311, allocations: 143.1 MB / 434.2 MB, free: 12.02 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001188/0.001188, allocations: 55.91 kB / 0.5156 GB, free: 14.47 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3782/0.3795, allocations: 82.04 MB / 0.5957 GB, free: 16.11 MB / 446.1 MB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y): time 0.0638/0.4433, allocations: 75.13 MB / 0.6691 GB, free: 4.855 MB / 0.4981 GB Notification: Performance of NFInst.instExpressions: time 0.0191/0.4624, allocations: 12.78 MB / 0.6815 GB, free: 8.039 MB / 0.5137 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003021/0.4655, allocations: 71.56 kB / 0.6816 GB, free: 7.969 MB / 0.5137 GB Notification: Performance of NFTyping.typeComponents: time 0.002117/0.4676, allocations: 0.8189 MB / 0.6824 GB, free: 7.145 MB / 0.5137 GB Notification: Performance of NFTyping.typeBindings: time 0.006605/0.4743, allocations: 2.469 MB / 0.6848 GB, free: 4.664 MB / 0.5137 GB Notification: Performance of NFTyping.typeClassSections: time 0.003648/0.478, allocations: 1.387 MB / 0.6862 GB, free: 3.293 MB / 0.5137 GB Notification: Performance of NFFlatten.flatten: time 0.005781/0.4837, allocations: 4.404 MB / 0.6905 GB, free: 14.88 MB / 0.5294 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002053/0.4858, allocations: 1.429 MB / 0.6919 GB, free: 13.42 MB / 0.5294 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003825/0.4897, allocations: 1.625 MB / 0.6934 GB, free: 11.8 MB / 0.5294 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001449/0.4911, allocations: 1.198 MB / 0.6946 GB, free: 10.59 MB / 0.5294 GB Notification: Performance of NFPackage.collectConstants: time 0.0001978/0.4913, allocations: 160 kB / 0.6948 GB, free: 10.44 MB / 0.5294 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003262/0.4946, allocations: 1.404 MB / 0.6961 GB, free: 9.031 MB / 0.5294 GB Notification: Performance of NFScalarize.scalarize: time 0.0004013/0.495, allocations: 394.6 kB / 0.6965 GB, free: 8.645 MB / 0.5294 GB Notification: Performance of NFVerifyModel.verify: time 0.0009051/0.4959, allocations: 0.9138 MB / 0.6974 GB, free: 7.727 MB / 0.5294 GB Notification: Performance of NFConvertDAE.convert: time 0.003558/0.4995, allocations: 3.005 MB / 0.7003 GB, free: 4.715 MB / 0.5294 GB Notification: Performance of FrontEnd - DAE generated: time 6.071e-06/0.4995, allocations: 0 / 0.7003 GB, free: 4.715 MB / 0.5294 GB Notification: Performance of FrontEnd: time 1.883e-06/0.4995, allocations: 0 / 0.7003 GB, free: 4.715 MB / 0.5294 GB Notification: Performance of Transformations before backend: time 1.981e-05/0.4995, allocations: 0 / 0.7003 GB, free: 4.715 MB / 0.5294 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 0.003646/0.5032, allocations: 2.079 MB / 0.7024 GB, free: 2.57 MB / 0.5294 GB Notification: Performance of prepare preOptimizeDAE: time 4.154e-05/0.5032, allocations: 8.031 kB / 0.7024 GB, free: 2.562 MB / 0.5294 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007747/0.504, allocations: 238.7 kB / 0.7026 GB, free: 2.328 MB / 0.5294 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002544/0.5066, allocations: 1.532 MB / 0.7041 GB, free: 0.7383 MB / 0.5294 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.621e-05/0.5067, allocations: 70 kB / 0.7042 GB, free: 0.6719 MB / 0.5294 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000141/0.5068, allocations: 104 kB / 0.7043 GB, free: 0.5703 MB / 0.5294 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001854/0.5087, allocations: 1.104 MB / 0.7053 GB, free: 15.43 MB / 0.545 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.377e-05/0.5087, allocations: 0 / 0.7053 GB, free: 15.43 MB / 0.545 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.262e-05/0.5088, allocations: 40 kB / 0.7054 GB, free: 15.39 MB / 0.545 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.361e-05/0.5088, allocations: 24 kB / 0.7054 GB, free: 15.37 MB / 0.545 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001743/0.5106, allocations: 0.8939 MB / 0.7063 GB, free: 14.48 MB / 0.545 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 0.005743/0.5163, allocations: 4.907 MB / 0.7111 GB, free: 9.277 MB / 0.545 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001271/0.5176, allocations: 0.6289 MB / 0.7117 GB, free: 8.645 MB / 0.545 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006597/0.5183, allocations: 347 kB / 0.712 GB, free: 8.305 MB / 0.545 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005769/0.5189, allocations: 0.8277 MB / 0.7128 GB, free: 7.293 MB / 0.545 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.191e-05/0.5189, allocations: 43.12 kB / 0.7129 GB, free: 7.242 MB / 0.545 GB Notification: Performance of pre-optimization done (n=61): time 2.535e-06/0.5189, allocations: 0 / 0.7129 GB, free: 7.242 MB / 0.545 GB Notification: Performance of matching and sorting (n=61): time 0.006611/0.5255, allocations: 1.678 MB / 0.7145 GB, free: 5.535 MB / 0.545 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.588e-05/0.5256, allocations: 59.91 kB / 0.7146 GB, free: 5.461 MB / 0.545 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001687/0.5273, allocations: 1.225 MB / 0.7158 GB, free: 4.219 MB / 0.545 GB Notification: Performance of collectPreVariables (initialization): time 8.262e-05/0.5274, allocations: 41.7 kB / 0.7158 GB, free: 4.172 MB / 0.545 GB Notification: Performance of collectInitialEqns (initialization): time 0.000475/0.5279, allocations: 0.6026 MB / 0.7164 GB, free: 3.562 MB / 0.545 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001968/0.5281, allocations: 216.8 kB / 0.7166 GB, free: 3.348 MB / 0.545 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002312/0.5283, allocations: 158.6 kB / 0.7167 GB, free: 3.184 MB / 0.545 GB Notification: Performance of setup shared object (initialization): time 0.0001106/0.5284, allocations: 330 kB / 0.7171 GB, free: 2.855 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006152/0.5291, allocations: 288.7 kB / 0.7173 GB, free: 2.57 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000779/0.5298, allocations: 499.8 kB / 0.7178 GB, free: 2 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001282/0.5311, allocations: 0.709 MB / 0.7185 GB, free: 1.246 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.928e-06/0.5311, allocations: 0 / 0.7185 GB, free: 1.246 MB / 0.545 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.004252/0.5354, allocations: 1.273 MB / 0.7198 GB, free: 15.96 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 2.305e-05/0.5354, allocations: 8 kB / 0.7198 GB, free: 15.95 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.287e-05/0.5355, allocations: 4 kB / 0.7198 GB, free: 15.95 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005745/0.536, allocations: 136.7 kB / 0.7199 GB, free: 15.81 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005993/0.5367, allocations: 163.8 kB / 0.72 GB, free: 15.65 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0007771/0.5374, allocations: 0.6966 MB / 0.7207 GB, free: 14.93 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009992/0.5385, allocations: 123.1 kB / 0.7208 GB, free: 14.8 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.548e-05/0.5385, allocations: 31.98 kB / 0.7209 GB, free: 14.77 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001051/0.5396, allocations: 0.5526 MB / 0.7214 GB, free: 14.22 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0007498/0.5403, allocations: 491.8 kB / 0.7219 GB, free: 13.66 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001246/0.5416, allocations: 0.705 MB / 0.7226 GB, free: 12.91 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.635e-06/0.5416, allocations: 0 / 0.7226 GB, free: 12.91 MB / 0.5606 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.004299/0.5459, allocations: 1.261 MB / 0.7238 GB, free: 11.63 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 1.811e-05/0.546, allocations: 8 kB / 0.7238 GB, free: 11.62 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.741e-06/0.546, allocations: 4.375 kB / 0.7238 GB, free: 11.62 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000494/0.5465, allocations: 144.7 kB / 0.724 GB, free: 11.48 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00056/0.547, allocations: 151.8 kB / 0.7241 GB, free: 11.33 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0007615/0.5478, allocations: 0.6949 MB / 0.7248 GB, free: 10.61 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001043/0.5489, allocations: 103.4 kB / 0.7249 GB, free: 10.51 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.188e-05/0.5489, allocations: 24 kB / 0.7249 GB, free: 10.48 MB / 0.5606 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * 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 (79): * Single equations (assignments): 78 * 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 {(1,9)} Notification: Performance of prepare postOptimizeDAE: time 0.0002926/0.5492, allocations: 240.1 kB / 0.7251 GB, free: 10.24 MB / 0.5606 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002378/0.5495, allocations: 134.3 kB / 0.7253 GB, free: 10.11 MB / 0.5606 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00427/0.5538, allocations: 1.252 MB / 0.7265 GB, free: 8.844 MB / 0.5606 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.466e-05/0.5538, allocations: 8 kB / 0.7265 GB, free: 8.836 MB / 0.5606 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.673e-06/0.5538, allocations: 0 / 0.7265 GB, free: 8.836 MB / 0.5606 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003667/0.5575, allocations: 1.103 MB / 0.7276 GB, free: 7.699 MB / 0.5606 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006496/0.564, allocations: 2.618 MB / 0.7301 GB, free: 4.969 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.317e-06/0.564, allocations: 4 kB / 0.7301 GB, free: 4.965 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004782/0.5645, allocations: 119.7 kB / 0.7302 GB, free: 4.848 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004488/0.5649, allocations: 129.1 kB / 0.7304 GB, free: 4.719 MB / 0.5606 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.065e-05/0.565, allocations: 23.92 kB / 0.7304 GB, free: 4.695 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004508/0.5695, allocations: 2.58 MB / 0.7329 GB, free: 1.961 MB / 0.5606 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.196e-06/0.5695, allocations: 15.88 kB / 0.7329 GB, free: 1.945 MB / 0.5606 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00491/0.5745, allocations: 1.691 MB / 0.7346 GB, free: 192 kB / 0.5606 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007475/0.5752, allocations: 315.2 kB / 0.7349 GB, free: 15.86 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001843/0.5754, allocations: 16.06 kB / 0.7349 GB, free: 15.84 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000737/0.5762, allocations: 59.92 kB / 0.7349 GB, free: 15.79 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001228/0.5763, allocations: 60.23 kB / 0.735 GB, free: 15.73 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.331e-05/0.5764, allocations: 35.98 kB / 0.735 GB, free: 15.69 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.001201/0.5776, allocations: 0.8816 MB / 0.7359 GB, free: 14.81 MB / 0.5762 GB Notification: Performance of sort global known variables: time 2.21e-07/0.5776, allocations: 0 / 0.7359 GB, free: 14.81 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.001841/0.5794, allocations: 0.7174 MB / 0.7366 GB, free: 14.09 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 2 (chi.con.vol.dynBal.U,chi.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 (56): * Single equations (assignments): 51 * 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 {(1,9)} Notification: Performance of Backend phase and start with SimCode phase: time 0.000909/0.5803, allocations: 466.6 kB / 0.737 GB, free: 13.64 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.002457/0.5828, allocations: 1.117 MB / 0.7381 GB, free: 12.53 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 4.659e-06/0.5828, allocations: 1.062 kB / 0.7381 GB, free: 12.53 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.001352/0.5842, allocations: 0.568 MB / 0.7387 GB, free: 11.95 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003024/0.5872, allocations: 0.7924 MB / 0.7395 GB, free: 11.19 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003595/0.5908, allocations: 2.269 MB / 0.7417 GB, free: 8.848 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006806/0.5915, allocations: 1.168 MB / 0.7428 GB, free: 7.652 MB / 0.5762 GB Notification: Performance of simCode: alias equations: time 0.001055/0.5926, allocations: 306.5 kB / 0.7431 GB, free: 7.355 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002343/0.5928, allocations: 107.4 kB / 0.7432 GB, free: 7.25 MB / 0.5762 GB Notification: Performance of SimCode: time 3.226e-06/0.5928, allocations: 0 / 0.7432 GB, free: 7.25 MB / 0.5762 GB Notification: Performance of Templates: time 0.348/0.9409, allocations: 32.42 MB / 0.7749 GB, free: 133.3 MB / 0.5762 GB make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y.makefile (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y.sim & ./BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y -abortSlowSimulation -alarm=480 -s cvode -lv LOG_STATS > BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_y.pipe 2>&1)