Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg.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: translateModel(IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg") translateModel(IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001177/0.001177, 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 0.001324/0.001324, allocations: 188.6 kB / 16.25 MB, free: 6.629 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.343/1.343, allocations: 222.9 MB / 239.9 MB, free: 4.52 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7642/0.7642, allocations: 132.2 MB / 422.3 MB, free: 1.926 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001162/0.001162, allocations: 60.7 kB / 0.5013 GB, free: 9.09 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1881/0.1893, allocations: 80.2 MB / 0.5796 GB, free: 9.109 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg): time 0.4306/0.6199, allocations: 76.16 MB / 0.654 GB, free: 11.44 MB / 0.4981 GB Notification: Performance of NFInst.instExpressions: time 0.02967/0.6496, allocations: 19.86 MB / 0.6734 GB, free: 13.21 MB / 0.5137 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004482/0.6541, allocations: 77.72 kB / 0.6735 GB, free: 13.18 MB / 0.5137 GB Notification: Performance of NFTyping.typeComponents: time 0.003818/0.658, allocations: 0.8419 MB / 0.6743 GB, free: 12.68 MB / 0.5137 GB Notification: Performance of NFTyping.typeBindings: time 0.01085/0.6689, allocations: 2.656 MB / 0.6769 GB, free: 11.13 MB / 0.5137 GB Notification: Performance of NFTyping.typeClassSections: time 0.007759/0.6767, allocations: 1.938 MB / 0.6788 GB, free: 10.03 MB / 0.5137 GB Notification: Performance of NFFlatten.flatten: time 0.01072/0.6874, allocations: 5.171 MB / 0.6838 GB, free: 7.531 MB / 0.5137 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003609/0.6911, allocations: 1.655 MB / 0.6854 GB, free: 6.738 MB / 0.5137 GB Notification: Performance of NFEvalConstants.evaluate: time 0.007792/0.6989, allocations: 2.094 MB / 0.6875 GB, free: 5.715 MB / 0.5137 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004381/0.7033, allocations: 1.529 MB / 0.689 GB, free: 5.008 MB / 0.5137 GB Notification: Performance of NFPackage.collectConstants: time 0.0006845/0.704, allocations: 187.1 kB / 0.6891 GB, free: 5.004 MB / 0.5137 GB Notification: Performance of NFFlatten.collectFunctions: time 0.006596/0.7106, allocations: 1.967 MB / 0.6911 GB, free: 4.285 MB / 0.5137 GB Notification: Performance of NFScalarize.scalarize: time 0.0006827/0.7113, allocations: 481.6 kB / 0.6915 GB, free: 3.98 MB / 0.5137 GB Notification: Performance of NFVerifyModel.verify: time 0.002107/0.7134, allocations: 1.097 MB / 0.6926 GB, free: 3.305 MB / 0.5137 GB Notification: Performance of NFConvertDAE.convert: time 0.009199/0.7226, allocations: 3.479 MB / 0.696 GB, free: 1.98 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 1.073e-05/0.7227, allocations: 1.188 kB / 0.696 GB, free: 1.98 MB / 0.5137 GB Notification: Performance of FrontEnd: time 2.625e-06/0.7227, allocations: 4 kB / 0.696 GB, free: 1.977 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 0.0001271/0.7229, allocations: 0.9375 kB / 0.696 GB, free: 1.977 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 312 * Number of variables: 312 Notification: Performance of Generate backend data structure: time 0.007642/0.7305, allocations: 2.49 MB / 0.6984 GB, free: 392 kB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 5.26e-05/0.7306, allocations: 9.656 kB / 0.6984 GB, free: 392 kB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002257/0.7329, allocations: 405 kB / 0.6988 GB, free: 260 kB / 0.5137 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004297/0.7372, allocations: 1.788 MB / 0.7006 GB, free: 15.25 MB / 0.5294 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001045/0.7373, allocations: 97.81 kB / 0.7007 GB, free: 15.2 MB / 0.5294 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002412/0.7375, allocations: 122.3 kB / 0.7008 GB, free: 15.16 MB / 0.5294 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0032/0.7408, allocations: 1.426 MB / 0.7022 GB, free: 14.44 MB / 0.5294 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.031e-05/0.7408, allocations: 6.469 kB / 0.7022 GB, free: 14.43 MB / 0.5294 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001271/0.7409, allocations: 56.72 kB / 0.7022 GB, free: 14.39 MB / 0.5294 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.331e-05/0.741, allocations: 32.5 kB / 0.7023 GB, free: 14.39 MB / 0.5294 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002418/0.7434, allocations: 1.077 MB / 0.7033 GB, free: 14.01 MB / 0.5294 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 0.01156/0.755, allocations: 7.835 MB / 0.711 GB, free: 7.496 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003469/0.7585, allocations: 0.9951 MB / 0.7119 GB, free: 6.988 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001031/0.7595, allocations: 430.2 kB / 0.7124 GB, free: 6.781 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.002201/0.7618, allocations: 1.856 MB / 0.7142 GB, free: 4.629 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001219/0.763, allocations: 0.495 MB / 0.7146 GB, free: 4.328 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=84): time 3.827e-06/0.763, allocations: 0 / 0.7146 GB, free: 4.328 MB / 0.5294 GB Notification: Performance of matching and sorting (n=84): time 0.003385/0.7664, allocations: 1.269 MB / 0.7159 GB, free: 3.707 MB / 0.5294 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.673e-05/0.7665, allocations: 85.27 kB / 0.716 GB, free: 3.609 MB / 0.5294 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002203/0.7687, allocations: 1.39 MB / 0.7173 GB, free: 2.852 MB / 0.5294 GB Notification: Performance of collectPreVariables (initialization): time 0.0001031/0.7688, allocations: 43.95 kB / 0.7174 GB, free: 2.809 MB / 0.5294 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008029/0.7696, allocations: 0.8128 MB / 0.7182 GB, free: 2.086 MB / 0.5294 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003752/0.77, allocations: 294.6 kB / 0.7184 GB, free: 1.832 MB / 0.5294 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003333/0.7703, allocations: 210.9 kB / 0.7186 GB, free: 1.707 MB / 0.5294 GB Notification: Performance of setup shared object (initialization): time 0.000154/0.7705, allocations: 343.2 kB / 0.719 GB, free: 1.375 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009053/0.7714, allocations: 369.2 kB / 0.7193 GB, free: 1.188 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001204/0.7726, allocations: 0.672 MB / 0.72 GB, free: 0.6016 MB / 0.5294 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001776/0.7744, allocations: 1.059 MB / 0.721 GB, free: 15.83 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.935e-06/0.7744, allocations: 2.5 kB / 0.721 GB, free: 15.83 MB / 0.545 GB Notification: Performance of matching and sorting (n=130) (initialization): time 0.002634/0.7771, allocations: 1.239 MB / 0.7222 GB, free: 15.21 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 2.443e-05/0.7771, allocations: 7.688 kB / 0.7222 GB, free: 15.21 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.722e-05/0.7771, allocations: 11.72 kB / 0.7222 GB, free: 15.21 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.447e-05/0.7772, allocations: 13.91 kB / 0.7223 GB, free: 15.21 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000907/0.7781, allocations: 250.8 kB / 0.7225 GB, free: 15.15 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.6e-05/0.7781, allocations: 22.33 kB / 0.7225 GB, free: 15.14 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001691/0.7798, allocations: 189 kB / 0.7227 GB, free: 15.03 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001119/0.7799, allocations: 51.58 kB / 0.7227 GB, free: 15.02 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001519/0.7815, allocations: 0.6379 MB / 0.7234 GB, free: 14.64 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001047/0.7825, allocations: 0.6645 MB / 0.724 GB, free: 14.01 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001902/0.7844, allocations: 1.059 MB / 0.7251 GB, free: 12.83 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.801e-06/0.7844, allocations: 4 kB / 0.7251 GB, free: 12.83 MB / 0.545 GB Notification: Performance of matching and sorting (n=130) (initialization_lambda0): time 0.003035/0.7875, allocations: 1.242 MB / 0.7263 GB, free: 11.58 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 1.99e-05/0.7875, allocations: 8 kB / 0.7263 GB, free: 11.57 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.602e-05/0.7876, allocations: 15.94 kB / 0.7263 GB, free: 11.55 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.565e-05/0.7876, allocations: 15.94 kB / 0.7263 GB, free: 11.54 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009138/0.7885, allocations: 247.7 kB / 0.7265 GB, free: 11.3 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.968e-05/0.7885, allocations: 18.98 kB / 0.7266 GB, free: 11.28 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001872/0.7904, allocations: 160.1 kB / 0.7267 GB, free: 11.12 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001311/0.7906, allocations: 55.92 kB / 0.7268 GB, free: 11.07 MB / 0.545 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 40 * Number of states: 0 () * Number of discrete variables: 6 ($PRE.DataReader.nextTimeEvent,$whenCondition1,DataReader.nextTimeEventScaled,$PRE.DataReader.nextTimeEventScaled,DataReader.nextTimeEvent,eneLosInt.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (128): * Single equations (assignments): 126 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * 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 0.000632/0.7912, allocations: 259.1 kB / 0.727 GB, free: 10.81 MB / 0.545 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003695/0.7916, allocations: 169.9 kB / 0.7272 GB, free: 10.64 MB / 0.545 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003369/0.795, allocations: 1.448 MB / 0.7286 GB, free: 9.207 MB / 0.545 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.343e-05/0.795, allocations: 19.92 kB / 0.7286 GB, free: 9.188 MB / 0.545 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.496e-06/0.795, allocations: 0 / 0.7286 GB, free: 9.188 MB / 0.545 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002119/0.7972, allocations: 1.094 MB / 0.7297 GB, free: 8.066 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 postOpt removeSimpleEquations (simulation): time 0.005927/0.8031, allocations: 2.916 MB / 0.7325 GB, free: 5.07 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.937e-05/0.8031, allocations: 8.094 kB / 0.7325 GB, free: 5.062 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008057/0.8039, allocations: 179.8 kB / 0.7327 GB, free: 4.887 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (simulation): time 9.478e-06/0.804, allocations: 4 kB / 0.7327 GB, free: 4.883 MB / 0.545 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.944e-05/0.804, allocations: 27.98 kB / 0.7327 GB, free: 4.855 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.008e-05/0.8041, allocations: 7.938 kB / 0.7327 GB, free: 4.848 MB / 0.545 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.194e-06/0.8041, allocations: 3.938 kB / 0.7327 GB, free: 4.844 MB / 0.545 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003648/0.8077, allocations: 1.899 MB / 0.7346 GB, free: 2.918 MB / 0.545 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001057/0.8088, allocations: 370.7 kB / 0.735 GB, free: 2.535 MB / 0.545 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002409/0.809, allocations: 27.98 kB / 0.735 GB, free: 2.508 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001117/0.8102, allocations: 123.7 kB / 0.7351 GB, free: 2.387 MB / 0.545 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001431/0.8103, allocations: 72.91 kB / 0.7352 GB, free: 2.316 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.795e-05/0.8104, allocations: 47.91 kB / 0.7352 GB, free: 2.27 MB / 0.545 GB Notification: Performance of sorting global known variables: time 0.001624/0.812, allocations: 0.9318 MB / 0.7361 GB, free: 1.344 MB / 0.545 GB Notification: Performance of sort global known variables: time 1.6e-07/0.8121, allocations: 0 / 0.7361 GB, free: 1.344 MB / 0.545 GB Notification: Performance of remove unused functions: time 0.003357/0.8154, allocations: 0.9822 MB / 0.7371 GB, free: 368 kB / 0.545 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 5 (pipe.del.x,pipe.timDel.x,pipe.vol_b.dynBal.U,pipe.vol_a.dynBal.U,eneLosInt.y) * Number of discrete variables: 3 ($whenCondition1,DataReader.nextTimeEvent,DataReader.nextTimeEventScaled) * Number of discrete states: 2 (DataReader.nextTimeEvent,DataReader.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (102): * Single equations (assignments): 85 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 15 * When equations: 2 * 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 0.002494/0.8179, allocations: 0.9762 MB / 0.738 GB, free: 15.6 MB / 0.5606 GB Notification: Performance of simCode: created initialization part: time 0.004664/0.8226, allocations: 1.805 MB / 0.7398 GB, free: 13.78 MB / 0.5606 GB Notification: Performance of simCode: created event and clocks part: time 5.951e-06/0.8226, allocations: 0 / 0.7398 GB, free: 13.78 MB / 0.5606 GB Notification: Performance of simCode: created simulation system equations: time 0.001096/0.8237, allocations: 0.6112 MB / 0.7404 GB, free: 13.16 MB / 0.5606 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004103/0.8278, allocations: 0.7586 MB / 0.7411 GB, free: 12.44 MB / 0.5606 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007818/0.8357, allocations: 3.886 MB / 0.7449 GB, free: 8.516 MB / 0.5606 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000947/0.8366, allocations: 1.326 MB / 0.7462 GB, free: 7.16 MB / 0.5606 GB Notification: Performance of simCode: alias equations: time 0.001933/0.8386, allocations: 459 kB / 0.7467 GB, free: 6.734 MB / 0.5606 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004139/0.839, allocations: 167.3 kB / 0.7468 GB, free: 6.57 MB / 0.5606 GB Notification: Performance of SimCode: time 1.112e-06/0.839, allocations: 0 / 0.7468 GB, free: 6.57 MB / 0.5606 GB Notification: Performance of Templates: time 0.06117/0.9002, allocations: 34.79 MB / 0.7808 GB, free: 4.258 MB / 0.5919 GB make -j1 -f IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg.makefile (rm -f IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg.pipe ; mkfifo IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg.pipe >> ../files/IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg.sim & ./IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.PlugFlowULg.pipe 2>&1)