Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/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(BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries") translateModel(BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001149/0.001149, allocations: 105.8 kB / 16.27 MB, free: 6.414 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001172/0.001172, allocations: 189.8 kB / 17.2 MB, free: 5.953 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.334/1.334, allocations: 222.9 MB / 240.9 MB, free: 15.27 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002226/0.002226, allocations: 285 kB / 291.3 MB, free: 14.54 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9441/0.9441, allocations: 169.3 MB / 0.4988 GB, free: 4.508 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.00189/0.00189, allocations: 100.7 kB / 0.5959 GB, free: 15.18 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1574/0.1593, allocations: 86.97 MB / 0.6808 GB, free: 8.219 MB / 494.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries): time 0.484/0.6433, allocations: 161.5 MB / 0.8386 GB, free: 13.56 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.003399/0.6468, allocations: 1.705 MB / 0.8402 GB, free: 11.86 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004501/0.6473, allocations: 19.88 kB / 0.8403 GB, free: 11.84 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.0006319/0.6479, allocations: 159 kB / 0.8404 GB, free: 11.68 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 0.00151/0.6495, allocations: 0.5133 MB / 0.8409 GB, free: 11.16 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.001322/0.6508, allocations: 425.2 kB / 0.8413 GB, free: 10.75 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.002692/0.6535, allocations: 2.449 MB / 0.8437 GB, free: 8.301 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001497/0.655, allocations: 0.9293 MB / 0.8446 GB, free: 7.363 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001877/0.6569, allocations: 0.9303 MB / 0.8455 GB, free: 6.43 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001158/0.6581, allocations: 0.7156 MB / 0.8462 GB, free: 5.711 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 0.0002393/0.6584, allocations: 56 kB / 0.8463 GB, free: 5.656 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001749/0.6601, allocations: 0.7406 MB / 0.847 GB, free: 4.914 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.000468/0.6606, allocations: 303 kB / 0.8473 GB, free: 4.617 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.001043/0.6617, allocations: 0.544 MB / 0.8478 GB, free: 4.07 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.002057/0.6637, allocations: 1.39 MB / 0.8492 GB, free: 2.676 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 6.572e-06/0.6637, allocations: 4 kB / 0.8492 GB, free: 2.672 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.573e-06/0.6637, allocations: 0 / 0.8492 GB, free: 2.672 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 4.055e-05/0.6638, allocations: 0 / 0.8492 GB, free: 2.672 MB / 0.6075 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 0.002565/0.6664, allocations: 1.405 MB / 0.8505 GB, free: 1.211 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 4.073e-05/0.6664, allocations: 8.031 kB / 0.8506 GB, free: 1.203 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008573/0.6673, allocations: 182.5 kB / 0.8507 GB, free: 1.023 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001315/0.6686, allocations: 0.7981 MB / 0.8515 GB, free: 188 kB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.483e-05/0.6687, allocations: 41 kB / 0.8515 GB, free: 148 kB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 8.549e-05/0.6687, allocations: 56 kB / 0.8516 GB, free: 92 kB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001148/0.6699, allocations: 0.6901 MB / 0.8523 GB, free: 15.39 MB / 0.6231 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.425e-05/0.6699, allocations: 0 / 0.8523 GB, free: 15.39 MB / 0.6231 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.042e-05/0.67, allocations: 20 kB / 0.8523 GB, free: 15.37 MB / 0.6231 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.553e-05/0.67, allocations: 12 kB / 0.8523 GB, free: 15.36 MB / 0.6231 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.000922/0.6709, allocations: 0.5152 MB / 0.8528 GB, free: 14.84 MB / 0.6231 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 0.003864/0.6748, allocations: 3.264 MB / 0.856 GB, free: 11.21 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0006/0.6754, allocations: 392.7 kB / 0.8564 GB, free: 10.82 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003634/0.6758, allocations: 252 kB / 0.8566 GB, free: 10.57 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003082/0.6761, allocations: 198.2 kB / 0.8568 GB, free: 10.34 MB / 0.6231 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.207e-05/0.6762, allocations: 42.5 kB / 0.8568 GB, free: 10.29 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=28): time 1.793e-06/0.6762, allocations: 0 / 0.8568 GB, free: 10.29 MB / 0.6231 GB Notification: Performance of matching and sorting (n=28): time 0.004957/0.6811, allocations: 1.49 MB / 0.8583 GB, free: 8.773 MB / 0.6231 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.883e-05/0.6812, allocations: 55.41 kB / 0.8583 GB, free: 8.707 MB / 0.6231 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001468/0.6827, allocations: 1.069 MB / 0.8594 GB, free: 7.617 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 4.857e-05/0.6827, allocations: 37.7 kB / 0.8594 GB, free: 7.574 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003771/0.6831, allocations: 444.4 kB / 0.8599 GB, free: 7.137 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 9.445e-05/0.6832, allocations: 94.59 kB / 0.8599 GB, free: 7.043 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001294/0.6833, allocations: 69.61 kB / 0.86 GB, free: 6.969 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.0001109/0.6835, allocations: 321.9 kB / 0.8603 GB, free: 6.648 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002867/0.6838, allocations: 160.7 kB / 0.8605 GB, free: 6.488 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004371/0.6842, allocations: 364.1 kB / 0.8608 GB, free: 6.062 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006012/0.6848, allocations: 381 kB / 0.8612 GB, free: 5.68 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.865e-06/0.6848, allocations: 4 kB / 0.8612 GB, free: 5.676 MB / 0.6231 GB Notification: Performance of matching and sorting (n=28) (initialization): time 0.002/0.6868, allocations: 0.8053 MB / 0.862 GB, free: 4.859 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.76e-05/0.6869, allocations: 11.94 kB / 0.862 GB, free: 4.848 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.146e-06/0.6869, allocations: 0 / 0.862 GB, free: 4.848 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001461/0.6883, allocations: 360.3 kB / 0.8623 GB, free: 4.492 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000126/0.6885, allocations: 23.92 kB / 0.8623 GB, free: 4.469 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001011/0.6895, allocations: 1.008 MB / 0.8633 GB, free: 3.438 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005382/0.6901, allocations: 43.86 kB / 0.8634 GB, free: 3.395 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.193e-05/0.6901, allocations: 16 kB / 0.8634 GB, free: 3.379 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0006085/0.6907, allocations: 451.8 kB / 0.8638 GB, free: 2.934 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003791/0.6911, allocations: 312.4 kB / 0.8641 GB, free: 2.555 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0004887/0.6916, allocations: 313.5 kB / 0.8644 GB, free: 2.238 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.473e-06/0.6916, allocations: 0 / 0.8644 GB, free: 2.238 MB / 0.6231 GB Notification: Performance of matching and sorting (n=28) (initialization_lambda0): time 0.001204/0.6928, allocations: 0.6006 MB / 0.865 GB, free: 1.629 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.119e-05/0.6929, allocations: 4 kB / 0.865 GB, free: 1.625 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.821e-06/0.6929, allocations: 4 kB / 0.865 GB, free: 1.621 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.00051/0.6934, allocations: 204.6 kB / 0.8652 GB, free: 1.418 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000101/0.6935, allocations: 16 kB / 0.8652 GB, free: 1.402 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003836/0.6973, allocations: 3.3 MB / 0.8684 GB, free: 13.95 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005329/0.6979, allocations: 48.16 kB / 0.8685 GB, free: 13.9 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.539e-05/0.6979, allocations: 12 kB / 0.8685 GB, free: 13.89 MB / 0.6387 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 0.0001651/0.6981, allocations: 196.2 kB / 0.8687 GB, free: 13.69 MB / 0.6387 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001703/0.6983, allocations: 94.78 kB / 0.8688 GB, free: 13.6 MB / 0.6387 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001242/0.6995, allocations: 0.7097 MB / 0.8695 GB, free: 12.88 MB / 0.6387 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.301e-06/0.6995, allocations: 8 kB / 0.8695 GB, free: 12.87 MB / 0.6387 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.376e-06/0.6995, allocations: 0.875 kB / 0.8695 GB, free: 12.87 MB / 0.6387 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.501e-06/0.6996, allocations: 3.984 kB / 0.8695 GB, free: 12.86 MB / 0.6387 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002303/0.7019, allocations: 1.509 MB / 0.871 GB, free: 11.27 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.335e-06/0.7019, allocations: 8.031 kB / 0.871 GB, free: 11.27 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001043/0.702, allocations: 19.92 kB / 0.871 GB, free: 11.25 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004671/0.7025, allocations: 224.5 kB / 0.8712 GB, free: 11.02 MB / 0.6387 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.418e-05/0.7025, allocations: 12.92 kB / 0.8712 GB, free: 11.01 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.000868/0.7034, allocations: 0.9819 MB / 0.8722 GB, free: 10.01 MB / 0.6387 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.859e-06/0.7034, allocations: 3.938 kB / 0.8722 GB, free: 10 MB / 0.6387 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001125/0.7045, allocations: 0.8112 MB / 0.873 GB, free: 9.152 MB / 0.6387 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000303/0.7048, allocations: 207.9 kB / 0.8732 GB, free: 8.93 MB / 0.6387 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000119/0.705, allocations: 8 kB / 0.8732 GB, free: 8.922 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003872/0.7054, allocations: 15.98 kB / 0.8732 GB, free: 8.906 MB / 0.6387 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.836e-05/0.7054, allocations: 19.97 kB / 0.8732 GB, free: 8.887 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.429e-05/0.7055, allocations: 16.69 kB / 0.8732 GB, free: 8.871 MB / 0.6387 GB Notification: Performance of sorting global known variables: time 0.0009758/0.7065, allocations: 0.7708 MB / 0.874 GB, free: 8.09 MB / 0.6387 GB Notification: Performance of sort global known variables: time 2e-07/0.7065, allocations: 0 / 0.874 GB, free: 8.09 MB / 0.6387 GB Notification: Performance of remove unused functions: time 0.001038/0.7075, allocations: 399.4 kB / 0.8744 GB, free: 7.699 MB / 0.6387 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 0.0004121/0.7079, allocations: 176.3 kB / 0.8745 GB, free: 7.527 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.001457/0.7094, allocations: 0.75 MB / 0.8753 GB, free: 6.766 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 3.356e-06/0.7094, allocations: 0 / 0.8753 GB, free: 6.766 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.0004208/0.7098, allocations: 221.5 kB / 0.8755 GB, free: 6.551 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002069/0.7119, allocations: 484.3 kB / 0.8759 GB, free: 6.078 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00261/0.7145, allocations: 1.763 MB / 0.8777 GB, free: 4.254 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000741/0.7153, allocations: 1.176 MB / 0.8788 GB, free: 3.051 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001244/0.7154, allocations: 59.42 kB / 0.8789 GB, free: 2.992 MB / 0.6387 GB Notification: Performance of SimCode: time 5.11e-07/0.7154, allocations: 0 / 0.8789 GB, free: 2.992 MB / 0.6387 GB Notification: Performance of Templates: time 0.02731/0.7427, allocations: 19.87 MB / 0.8983 GB, free: 15.23 MB / 0.67 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries.sim & ./BuildingSystems_BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.FixedResistances.Validation.PressureDropsSeries.pipe 2>&1)