Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.FixedResistances.Validation.PressureDropsSeries.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/IDEAS 3.0.0/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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: "" <> buildModelFMU(IDEAS.Fluid.FixedResistances.Validation.PressureDropsSeries,fileNamePrefix="IDEAS_IDEAS_Fluid_FixedResistances_Validation_PressureDropsSeries",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.FixedResistances.Validation.PressureDropsSeries,fileNamePrefix="IDEAS_IDEAS_Fluid_FixedResistances_Validation_PressureDropsSeries",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 0.005249/0.005249, allocations: 101.6 kB / 15.73 MB, free: 5.992 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001142/0.001142, allocations: 195.9 kB / 16.67 MB, free: 5.922 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.267/1.267, allocations: 222.9 MB / 240.4 MB, free: 15.09 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7828/0.7828, allocations: 132.2 MB / 422.7 MB, free: 6.59 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001134/0.001135, allocations: 67.44 kB / 0.5808 GB, free: 24.05 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1469/0.148, allocations: 80.21 MB / 0.6592 GB, free: 10.77 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.FixedResistances.Validation.PressureDropsSeries): time 0.4929/0.641, allocations: 161.5 MB / 0.8169 GB, free: 9.949 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.003208/0.6443, allocations: 1.712 MB / 0.8186 GB, free: 8.992 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005068/0.6448, allocations: 11.41 kB / 0.8186 GB, free: 8.988 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.0006707/0.6455, allocations: 154.4 kB / 0.8188 GB, free: 8.891 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.001572/0.6471, allocations: 0.5181 MB / 0.8193 GB, free: 8.562 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.001245/0.6484, allocations: 429.6 kB / 0.8197 GB, free: 8.363 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.002867/0.6513, allocations: 2.454 MB / 0.8221 GB, free: 7.152 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001521/0.6528, allocations: 0.9319 MB / 0.823 GB, free: 6.629 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0017/0.6545, allocations: 0.9442 MB / 0.8239 GB, free: 6.121 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001259/0.6558, allocations: 0.7048 MB / 0.8246 GB, free: 5.723 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.0002448/0.656, allocations: 57.75 kB / 0.8246 GB, free: 5.723 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001633/0.6577, allocations: 0.7432 MB / 0.8254 GB, free: 5.324 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.0004587/0.6582, allocations: 308.5 kB / 0.8257 GB, free: 5.117 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0009712/0.6591, allocations: 0.5378 MB / 0.8262 GB, free: 4.793 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.001844/0.661, allocations: 1.412 MB / 0.8276 GB, free: 3.953 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 4.258e-06/0.661, allocations: 0 / 0.8276 GB, free: 3.953 MB / 0.5919 GB Notification: Performance of FrontEnd: time 1.894e-06/0.661, allocations: 4 kB / 0.8276 GB, free: 3.949 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 4.926e-05/0.6611, allocations: 0 / 0.8276 GB, free: 3.949 MB / 0.5919 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 122 * Number of variables: 122 Notification: Performance of Generate backend data structure: time 0.002584/0.6637, allocations: 1.401 MB / 0.8289 GB, free: 2.883 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 3.889e-05/0.6637, allocations: 9.531 kB / 0.8289 GB, free: 2.883 MB / 0.5919 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001477/0.6639, allocations: 98.95 kB / 0.829 GB, free: 2.797 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007993/0.6647, allocations: 190.1 kB / 0.8292 GB, free: 2.703 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001364/0.666, allocations: 0.8347 MB / 0.83 GB, free: 2.109 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.789e-05/0.6661, allocations: 46.22 kB / 0.8301 GB, free: 2.09 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.785e-05/0.6662, allocations: 55.66 kB / 0.8301 GB, free: 2.074 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001013/0.6672, allocations: 0.6855 MB / 0.8308 GB, free: 1.676 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.44e-05/0.6672, allocations: 0 / 0.8308 GB, free: 1.676 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.983e-05/0.6673, allocations: 25.17 kB / 0.8308 GB, free: 1.656 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.097e-05/0.6673, allocations: 12.31 kB / 0.8308 GB, free: 1.656 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007969/0.6681, allocations: 0.5264 MB / 0.8314 GB, free: 1.398 MB / 0.5919 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 0.003374/0.6715, allocations: 3.241 MB / 0.8345 GB, free: 14.46 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005294/0.672, allocations: 390.9 kB / 0.8349 GB, free: 14.26 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003122/0.6723, allocations: 243.7 kB / 0.8351 GB, free: 14.14 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002779/0.6726, allocations: 199.8 kB / 0.8353 GB, free: 13.93 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.836e-05/0.6727, allocations: 41.88 kB / 0.8354 GB, free: 13.88 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=28): time 1.643e-06/0.6727, allocations: 2.094 kB / 0.8354 GB, free: 13.88 MB / 0.6075 GB Notification: Performance of matching and sorting (n=28): time 0.004474/0.6771, allocations: 1.473 MB / 0.8368 GB, free: 13.06 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.826e-05/0.6772, allocations: 55.75 kB / 0.8368 GB, free: 13 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001255/0.6785, allocations: 1.076 MB / 0.8379 GB, free: 12.42 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 4.557e-05/0.6785, allocations: 34.45 kB / 0.8379 GB, free: 12.38 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003237/0.6788, allocations: 443.4 kB / 0.8384 GB, free: 12.01 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 7.97e-05/0.6789, allocations: 99.02 kB / 0.8384 GB, free: 11.92 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001068/0.679, allocations: 72.88 kB / 0.8385 GB, free: 11.88 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 9.318e-05/0.6791, allocations: 316.1 kB / 0.8388 GB, free: 11.57 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002484/0.6794, allocations: 161.8 kB / 0.839 GB, free: 11.48 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003812/0.6798, allocations: 365 kB / 0.8393 GB, free: 11.17 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0005186/0.6803, allocations: 381.1 kB / 0.8397 GB, free: 10.97 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.086e-06/0.6803, allocations: 3.938 kB / 0.8397 GB, free: 10.97 MB / 0.6075 GB Notification: Performance of matching and sorting (n=28) (initialization): time 0.001847/0.6822, allocations: 0.8005 MB / 0.8405 GB, free: 10.53 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 1.403e-05/0.6822, allocations: 4.688 kB / 0.8405 GB, free: 10.53 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.458e-06/0.6822, allocations: 6.172 kB / 0.8405 GB, free: 10.53 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001374/0.6836, allocations: 357.2 kB / 0.8408 GB, free: 10.36 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001175/0.6837, allocations: 20.67 kB / 0.8408 GB, free: 10.35 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0009151/0.6846, allocations: 1.008 MB / 0.8418 GB, free: 9.574 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005075/0.6852, allocations: 44.72 kB / 0.8419 GB, free: 9.547 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.815e-05/0.6852, allocations: 14.77 kB / 0.8419 GB, free: 9.543 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005324/0.6858, allocations: 455.4 kB / 0.8423 GB, free: 9.273 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003439/0.6861, allocations: 313.2 kB / 0.8426 GB, free: 8.996 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0004156/0.6865, allocations: 303.6 kB / 0.8429 GB, free: 8.832 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.444e-06/0.6866, allocations: 4 kB / 0.8429 GB, free: 8.828 MB / 0.6075 GB Notification: Performance of matching and sorting (n=28) (initialization_lambda0): time 0.001114/0.6877, allocations: 0.6021 MB / 0.8435 GB, free: 8.5 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 9.759e-06/0.6877, allocations: 6.781 kB / 0.8435 GB, free: 8.5 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.705e-06/0.6877, allocations: 0 / 0.8435 GB, free: 8.5 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004625/0.6882, allocations: 199.2 kB / 0.8437 GB, free: 8.41 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 9.549e-05/0.6883, allocations: 27.17 kB / 0.8437 GB, free: 8.398 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003515/0.6918, allocations: 3.308 MB / 0.847 GB, free: 4.996 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004831/0.6923, allocations: 40.34 kB / 0.847 GB, free: 4.957 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.521e-05/0.6923, allocations: 16 kB / 0.847 GB, free: 4.941 MB / 0.6075 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 4 * 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 (9): * Single equations (assignments): 8 * 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 {(1,19)} Notification: Performance of prepare postOptimizeDAE: time 0.0001422/0.6925, allocations: 200.1 kB / 0.8472 GB, free: 4.738 MB / 0.6075 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001424/0.6926, allocations: 94.78 kB / 0.8473 GB, free: 4.645 MB / 0.6075 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001101/0.6937, allocations: 0.7065 MB / 0.848 GB, free: 3.93 MB / 0.6075 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.581e-06/0.6937, allocations: 4 kB / 0.848 GB, free: 3.926 MB / 0.6075 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.593e-06/0.6937, allocations: 0 / 0.848 GB, free: 3.926 MB / 0.6075 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.18e-06/0.6938, allocations: 3.938 kB / 0.848 GB, free: 3.922 MB / 0.6075 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002096/0.6959, allocations: 1.501 MB / 0.8494 GB, free: 2.336 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.019e-06/0.6959, allocations: 4 kB / 0.8495 GB, free: 2.332 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001029/0.696, allocations: 19.98 kB / 0.8495 GB, free: 2.312 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004037/0.6964, allocations: 220.8 kB / 0.8497 GB, free: 2.094 MB / 0.6075 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.839e-05/0.6964, allocations: 12 kB / 0.8497 GB, free: 2.082 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0008029/0.6972, allocations: 0.9794 MB / 0.8507 GB, free: 1.078 MB / 0.6075 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.346e-06/0.6973, allocations: 3.938 kB / 0.8507 GB, free: 1.074 MB / 0.6075 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00104/0.6983, allocations: 0.7929 MB / 0.8514 GB, free: 248 kB / 0.6075 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002878/0.6986, allocations: 211.9 kB / 0.8516 GB, free: 16 kB / 0.6075 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001421/0.6987, allocations: 20.03 kB / 0.8516 GB, free: 15.99 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003485/0.6991, allocations: 15.94 kB / 0.8517 GB, free: 15.98 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.676e-05/0.6992, allocations: 31.84 kB / 0.8517 GB, free: 15.95 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.871e-05/0.6992, allocations: 11.94 kB / 0.8517 GB, free: 15.94 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0008783/0.7001, allocations: 0.7669 MB / 0.8525 GB, free: 15.16 MB / 0.6231 GB Notification: Performance of sort global known variables: time 1.5e-07/0.7001, allocations: 0 / 0.8525 GB, free: 15.16 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.0009552/0.701, allocations: 403.3 kB / 0.8528 GB, free: 14.77 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * 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 (9): * Single equations (assignments): 8 * 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 {(1,19)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001447/0.7025, allocations: 1.325 MB / 0.8541 GB, free: 13.4 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.001304/0.7038, allocations: 0.7578 MB / 0.8549 GB, free: 12.63 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 2.795e-06/0.7038, allocations: 0 / 0.8549 GB, free: 12.63 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0003796/0.7042, allocations: 206.5 kB / 0.8551 GB, free: 12.43 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001759/0.706, allocations: 495.9 kB / 0.8555 GB, free: 11.95 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01164/0.7176, allocations: 8.144 MB / 0.8635 GB, free: 3.613 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007519/0.7184, allocations: 1.18 MB / 0.8646 GB, free: 2.406 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.0005465/0.719, allocations: 199.3 kB / 0.8648 GB, free: 2.207 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003469/0.7193, allocations: 319.3 kB / 0.8651 GB, free: 1.895 MB / 0.6231 GB Notification: Performance of SimCode: time 7.01e-07/0.7193, allocations: 0 / 0.8651 GB, free: 1.895 MB / 0.6231 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05532/0.7747, allocations: 28.98 MB / 0.8934 GB, free: 5.289 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate platform static: time 12.39/13.17, allocations: 4.656 kB / 0.8934 GB, free: 5.285 MB / 0.6544 GB (rm -f IDEAS_IDEAS.Fluid.FixedResistances.Validation.PressureDropsSeries.pipe ; mkfifo IDEAS_IDEAS.Fluid.FixedResistances.Validation.PressureDropsSeries.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.FixedResistances.Validation.PressureDropsSeries.pipe >> ../files/IDEAS_IDEAS.Fluid.FixedResistances.Validation.PressureDropsSeries.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IDEAS_IDEAS_Fluid_FixedResistances_Validation_PressureDropsSeries_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 IDEAS_IDEAS_Fluid_FixedResistances_Validation_PressureDropsSeries.fmu > IDEAS_IDEAS.Fluid.FixedResistances.Validation.PressureDropsSeries.pipe 2>&1)