Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater.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.MixingVolumes.Validation.CoupledVolumesWater,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater") translateModel(BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001025/0.001025, allocations: 115.3 kB / 15.34 MB, free: 0.5156 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00107/0.00107, allocations: 189.3 kB / 16.25 MB, free: 6.625 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.339/1.339, allocations: 222.9 MB / 239.9 MB, free: 4.52 MB / 190.1 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 0.9594/0.9594, allocations: 143 MB / 433.1 MB, free: 11.57 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001299/0.001299, allocations: 59.91 kB / 0.5137 GB, free: 12 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1489/0.1502, allocations: 82.04 MB / 0.5938 GB, free: 9.918 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater): time 0.2776/0.4279, allocations: 26.08 MB / 0.6193 GB, free: 30.82 MB / 0.4981 GB Notification: Performance of NFInst.instExpressions: time 0.008026/0.4359, allocations: 7.081 MB / 0.6262 GB, free: 26.04 MB / 0.4981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001334/0.4373, allocations: 33.66 kB / 0.6262 GB, free: 26.03 MB / 0.4981 GB Notification: Performance of NFTyping.typeComponents: time 0.001126/0.4385, allocations: 333.7 kB / 0.6265 GB, free: 25.84 MB / 0.4981 GB Notification: Performance of NFTyping.typeBindings: time 0.003053/0.4416, allocations: 1.037 MB / 0.6275 GB, free: 25.24 MB / 0.4981 GB Notification: Performance of NFTyping.typeClassSections: time 0.002325/0.4439, allocations: 0.8676 MB / 0.6284 GB, free: 24.78 MB / 0.4981 GB Notification: Performance of NFFlatten.flatten: time 0.00244/0.4464, allocations: 2.105 MB / 0.6304 GB, free: 23.79 MB / 0.4981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0008757/0.4472, allocations: 0.6144 MB / 0.631 GB, free: 23.52 MB / 0.4981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001827/0.4491, allocations: 0.7262 MB / 0.6317 GB, free: 23.19 MB / 0.4981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0007734/0.4499, allocations: 0.5634 MB / 0.6323 GB, free: 22.93 MB / 0.4981 GB Notification: Performance of NFPackage.collectConstants: time 0.000125/0.45, allocations: 54.38 kB / 0.6323 GB, free: 22.93 MB / 0.4981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001452/0.4515, allocations: 0.8224 MB / 0.6331 GB, free: 22.64 MB / 0.4981 GB Notification: Performance of NFScalarize.scalarize: time 0.0001817/0.4517, allocations: 168.9 kB / 0.6333 GB, free: 22.54 MB / 0.4981 GB Notification: Performance of NFVerifyModel.verify: time 0.0004318/0.4521, allocations: 384.5 kB / 0.6337 GB, free: 22.32 MB / 0.4981 GB Notification: Performance of NFConvertDAE.convert: time 0.001603/0.4537, allocations: 1.251 MB / 0.6349 GB, free: 21.87 MB / 0.4981 GB Notification: Performance of FrontEnd - DAE generated: time 3.597e-06/0.4537, allocations: 0 / 0.6349 GB, free: 21.87 MB / 0.4981 GB Notification: Performance of FrontEnd: time 1.693e-06/0.4537, allocations: 0 / 0.6349 GB, free: 21.87 MB / 0.4981 GB Notification: Performance of Transformations before backend: time 2.016e-05/0.4538, allocations: 0 / 0.6349 GB, free: 21.87 MB / 0.4981 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 110 * Number of variables: 110 Notification: Performance of Generate backend data structure: time 0.001379/0.4551, allocations: 1.055 MB / 0.6359 GB, free: 21.09 MB / 0.4981 GB Notification: Performance of prepare preOptimizeDAE: time 3.146e-05/0.4552, allocations: 12.09 kB / 0.6359 GB, free: 21.09 MB / 0.4981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0003035/0.4555, allocations: 91.38 kB / 0.636 GB, free: 21.05 MB / 0.4981 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009728/0.4565, allocations: 0.7282 MB / 0.6367 GB, free: 20.58 MB / 0.4981 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.277e-05/0.4565, allocations: 38.61 kB / 0.6368 GB, free: 20.56 MB / 0.4981 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.649e-05/0.4566, allocations: 46.44 kB / 0.6368 GB, free: 20.55 MB / 0.4981 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0006922/0.4573, allocations: 0.5013 MB / 0.6373 GB, free: 20.28 MB / 0.4981 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.133e-05/0.4573, allocations: 0 / 0.6373 GB, free: 20.28 MB / 0.4981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.307e-05/0.4574, allocations: 20.78 kB / 0.6373 GB, free: 20.27 MB / 0.4981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.395e-05/0.4574, allocations: 19.62 kB / 0.6373 GB, free: 20.26 MB / 0.4981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0004419/0.4578, allocations: 316.6 kB / 0.6376 GB, free: 20.15 MB / 0.4981 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 0.002106/0.4599, allocations: 2.756 MB / 0.6403 GB, free: 17.88 MB / 0.4981 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0002776/0.4602, allocations: 194.9 kB / 0.6405 GB, free: 17.79 MB / 0.4981 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.00012/0.4604, allocations: 103.1 kB / 0.6406 GB, free: 17.75 MB / 0.4981 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002405/0.4606, allocations: 337.7 kB / 0.6409 GB, free: 17.37 MB / 0.4981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.948e-05/0.4606, allocations: 38.12 kB / 0.641 GB, free: 17.33 MB / 0.4981 GB Notification: Performance of pre-optimization done (n=22): time 1.583e-06/0.4606, allocations: 0 / 0.641 GB, free: 17.33 MB / 0.4981 GB Notification: Performance of matching and sorting (n=22): time 0.0005148/0.4612, allocations: 307.4 kB / 0.6413 GB, free: 17.19 MB / 0.4981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.018e-05/0.4612, allocations: 54.69 kB / 0.6413 GB, free: 17.13 MB / 0.4981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000473/0.4617, allocations: 0.5116 MB / 0.6418 GB, free: 16.89 MB / 0.4981 GB Notification: Performance of collectPreVariables (initialization): time 2.802e-05/0.4617, allocations: 29.7 kB / 0.6419 GB, free: 16.86 MB / 0.4981 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001568/0.4619, allocations: 354.9 kB / 0.6422 GB, free: 16.58 MB / 0.4981 GB Notification: Performance of collectInitialBindings (initialization): time 5.294e-05/0.4619, allocations: 74.12 kB / 0.6423 GB, free: 16.52 MB / 0.4981 GB Notification: Performance of simplifyInitialFunctions (initialization): time 9.325e-05/0.462, allocations: 83.2 kB / 0.6423 GB, free: 16.47 MB / 0.4981 GB Notification: Performance of setup shared object (initialization): time 6.792e-05/0.4621, allocations: 367.9 kB / 0.6427 GB, free: 16.13 MB / 0.4981 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001322/0.4622, allocations: 94.11 kB / 0.6428 GB, free: 16.09 MB / 0.4981 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001758/0.4624, allocations: 232.7 kB / 0.643 GB, free: 15.88 MB / 0.4981 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003089/0.4627, allocations: 334.2 kB / 0.6433 GB, free: 15.62 MB / 0.4981 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.196e-06/0.4628, allocations: 0 / 0.6433 GB, free: 15.62 MB / 0.4981 GB Notification: Performance of matching and sorting (n=44) (initialization): time 0.000497/0.4633, allocations: 397.7 kB / 0.6437 GB, free: 15.45 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 1.453e-05/0.4633, allocations: 5.281 kB / 0.6437 GB, free: 15.45 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.085e-06/0.4633, allocations: 9.312 kB / 0.6437 GB, free: 15.45 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.691e-05/0.4633, allocations: 12 kB / 0.6437 GB, free: 15.45 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002467/0.4636, allocations: 75.61 kB / 0.6438 GB, free: 15.44 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.16e-05/0.4636, allocations: 12.36 kB / 0.6438 GB, free: 15.43 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004086/0.464, allocations: 49.5 kB / 0.6439 GB, free: 15.41 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.158e-05/0.464, allocations: 21.12 kB / 0.6439 GB, free: 15.41 MB / 0.4981 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0002388/0.4643, allocations: 244.9 kB / 0.6441 GB, free: 15.26 MB / 0.4981 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0001694/0.4645, allocations: 237.9 kB / 0.6443 GB, free: 15.04 MB / 0.4981 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0002865/0.4648, allocations: 334.8 kB / 0.6447 GB, free: 14.79 MB / 0.4981 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.356e-06/0.4648, allocations: 3.25 kB / 0.6447 GB, free: 14.79 MB / 0.4981 GB Notification: Performance of matching and sorting (n=44) (initialization_lambda0): time 0.0004827/0.4653, allocations: 386.6 kB / 0.645 GB, free: 14.61 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 9.057e-06/0.4653, allocations: 8.188 kB / 0.645 GB, free: 14.61 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.308e-06/0.4653, allocations: 2.531 kB / 0.645 GB, free: 14.61 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.881e-06/0.4653, allocations: 8.125 kB / 0.6451 GB, free: 14.61 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002216/0.4655, allocations: 82.17 kB / 0.6451 GB, free: 14.6 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.272e-06/0.4655, allocations: 9.75 kB / 0.6451 GB, free: 14.6 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003807/0.4659, allocations: 55.45 kB / 0.6452 GB, free: 14.57 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.562e-05/0.466, allocations: 19.53 kB / 0.6452 GB, free: 14.57 MB / 0.4981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 19 * 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 (44): * Single equations (assignments): 44 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 9.354e-05/0.4661, allocations: 215.5 kB / 0.6454 GB, free: 14.36 MB / 0.4981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 9.364e-05/0.4662, allocations: 53.53 kB / 0.6455 GB, free: 14.33 MB / 0.4981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0004119/0.4666, allocations: 284.1 kB / 0.6457 GB, free: 14.21 MB / 0.4981 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.093e-06/0.4666, allocations: 2.875 kB / 0.6457 GB, free: 14.21 MB / 0.4981 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.101e-06/0.4666, allocations: 4.75 kB / 0.6457 GB, free: 14.2 MB / 0.4981 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0002583/0.4669, allocations: 380.9 kB / 0.6461 GB, free: 13.89 MB / 0.4981 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001236/0.4681, allocations: 1.057 MB / 0.6471 GB, free: 13.18 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.4e-06/0.4681, allocations: 2.375 kB / 0.6471 GB, free: 13.18 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002058/0.4683, allocations: 54.77 kB / 0.6472 GB, free: 13.17 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.773e-06/0.4684, allocations: 10.69 kB / 0.6472 GB, free: 13.16 MB / 0.4981 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.03e-05/0.4684, allocations: 4.25 kB / 0.6472 GB, free: 13.16 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.26e-06/0.4684, allocations: 7.906 kB / 0.6472 GB, free: 13.16 MB / 0.4981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.877e-06/0.4684, allocations: 5.75 kB / 0.6472 GB, free: 13.16 MB / 0.4981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006263/0.469, allocations: 0.5164 MB / 0.6477 GB, free: 12.81 MB / 0.4981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002059/0.4692, allocations: 173.1 kB / 0.6479 GB, free: 12.66 MB / 0.4981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.049e-05/0.4693, allocations: 11.38 kB / 0.6479 GB, free: 12.66 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000413/0.4698, allocations: 30.28 kB / 0.6479 GB, free: 12.65 MB / 0.4981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 3.91e-05/0.4698, allocations: 23.45 kB / 0.648 GB, free: 12.64 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.111e-05/0.4698, allocations: 18.48 kB / 0.648 GB, free: 12.64 MB / 0.4981 GB Notification: Performance of sorting global known variables: time 0.0004232/0.4703, allocations: 404 kB / 0.6484 GB, free: 12.45 MB / 0.4981 GB Notification: Performance of sort global known variables: time 1.3e-07/0.4703, allocations: 4 kB / 0.6484 GB, free: 12.45 MB / 0.4981 GB Notification: Performance of remove unused functions: time 0.001045/0.4713, allocations: 343.9 kB / 0.6487 GB, free: 12.38 MB / 0.4981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 10 * Number of states: 2 (vol.dynBal.U,vol1.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 (25): * Single equations (assignments): 24 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0006644/0.472, allocations: 299.5 kB / 0.649 GB, free: 12.23 MB / 0.4981 GB Notification: Performance of simCode: created initialization part: time 0.0006745/0.4727, allocations: 420.5 kB / 0.6494 GB, free: 12.09 MB / 0.4981 GB Notification: Performance of simCode: created event and clocks part: time 5.741e-06/0.4727, allocations: 1.25 kB / 0.6494 GB, free: 12.09 MB / 0.4981 GB Notification: Performance of simCode: created simulation system equations: time 0.0001519/0.4729, allocations: 112.7 kB / 0.6495 GB, free: 12.05 MB / 0.4981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001801/0.4747, allocations: 383.5 kB / 0.6499 GB, free: 11.97 MB / 0.4981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00181/0.4765, allocations: 1.308 MB / 0.6511 GB, free: 11.06 MB / 0.4981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004066/0.4769, allocations: 0.897 MB / 0.652 GB, free: 10.35 MB / 0.4981 GB Notification: Performance of simCode: alias equations: time 0.0006714/0.4776, allocations: 152 kB / 0.6521 GB, free: 10.32 MB / 0.4981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001321/0.4777, allocations: 56.78 kB / 0.6522 GB, free: 10.31 MB / 0.4981 GB Notification: Performance of SimCode: time 2.41e-07/0.4777, allocations: 0 / 0.6522 GB, free: 10.31 MB / 0.4981 GB Notification: Performance of Templates: time 0.0242/0.5019, allocations: 12.71 MB / 0.6646 GB, free: 9.215 MB / 0.4981 GB make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater.makefile (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater.sim & ./BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.CoupledVolumesWater.pipe 2>&1)