Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.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.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater") translateModel(IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00119/0.001189, allocations: 112.5 kB / 16.37 MB, free: 6.344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001459/0.001459, allocations: 189.5 kB / 17.3 MB, free: 5.898 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.378/1.378, allocations: 222.9 MB / 241 MB, free: 15.18 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7954/0.7954, allocations: 132.2 MB / 423.4 MB, free: 6.652 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001255/0.001256, allocations: 71.31 kB / 0.5819 GB, free: 23.76 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1588/0.1601, allocations: 80.21 MB / 0.6603 GB, free: 10.34 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater): time 0.0225/0.1826, allocations: 23.34 MB / 0.6831 GB, free: 2.898 MB / 0.5137 GB Notification: Performance of NFInst.instExpressions: time 0.009509/0.1922, allocations: 6.832 MB / 0.6897 GB, free: 12.05 MB / 0.5294 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001189/0.1934, allocations: 31.81 kB / 0.6898 GB, free: 12.02 MB / 0.5294 GB Notification: Performance of NFTyping.typeComponents: time 0.001036/0.1945, allocations: 321.9 kB / 0.6901 GB, free: 11.7 MB / 0.5294 GB Notification: Performance of NFTyping.typeBindings: time 0.002859/0.1974, allocations: 0.8978 MB / 0.6909 GB, free: 10.8 MB / 0.5294 GB Notification: Performance of NFTyping.typeClassSections: time 0.002151/0.1996, allocations: 0.7674 MB / 0.6917 GB, free: 10.04 MB / 0.5294 GB Notification: Performance of NFFlatten.flatten: time 0.004345/0.2039, allocations: 3.467 MB / 0.6951 GB, free: 6.57 MB / 0.5294 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001869/0.2058, allocations: 1.333 MB / 0.6964 GB, free: 5.211 MB / 0.5294 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003372/0.2092, allocations: 1.204 MB / 0.6976 GB, free: 4.016 MB / 0.5294 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001886/0.2111, allocations: 0.9373 MB / 0.6985 GB, free: 3.074 MB / 0.5294 GB Notification: Performance of NFPackage.collectConstants: time 0.0002576/0.2114, allocations: 92 kB / 0.6986 GB, free: 2.984 MB / 0.5294 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002213/0.2136, allocations: 0.7721 MB / 0.6993 GB, free: 2.211 MB / 0.5294 GB Notification: Performance of NFScalarize.scalarize: time 0.0003927/0.214, allocations: 294.9 kB / 0.6996 GB, free: 1.922 MB / 0.5294 GB Notification: Performance of NFVerifyModel.verify: time 0.001071/0.2151, allocations: 0.6298 MB / 0.7002 GB, free: 1.289 MB / 0.5294 GB Notification: Performance of NFConvertDAE.convert: time 0.003065/0.2182, allocations: 1.908 MB / 0.7021 GB, free: 15.38 MB / 0.545 GB Notification: Performance of FrontEnd - DAE generated: time 9.578e-06/0.2182, allocations: 0 / 0.7021 GB, free: 15.38 MB / 0.545 GB Notification: Performance of FrontEnd: time 3.226e-06/0.2182, allocations: 0 / 0.7021 GB, free: 15.38 MB / 0.545 GB Notification: Performance of Transformations before backend: time 2.174e-05/0.2183, allocations: 0 / 0.7021 GB, free: 15.38 MB / 0.545 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 183 * Number of variables: 183 Notification: Performance of Generate backend data structure: time 0.002539/0.2208, allocations: 1.546 MB / 0.7036 GB, free: 13.78 MB / 0.545 GB Notification: Performance of prepare preOptimizeDAE: time 5.351e-05/0.2209, allocations: 12.03 kB / 0.7036 GB, free: 13.77 MB / 0.545 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0005187/0.2214, allocations: 139.4 kB / 0.7037 GB, free: 13.63 MB / 0.545 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002025/0.2234, allocations: 1.216 MB / 0.7049 GB, free: 12.37 MB / 0.545 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.018e-05/0.2235, allocations: 58 kB / 0.705 GB, free: 12.31 MB / 0.545 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001257/0.2236, allocations: 75.94 kB / 0.705 GB, free: 12.24 MB / 0.545 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001627/0.2253, allocations: 1.033 MB / 0.7061 GB, free: 11.16 MB / 0.545 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.482e-05/0.2253, allocations: 11.98 kB / 0.7061 GB, free: 11.14 MB / 0.545 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.488e-05/0.2254, allocations: 39.92 kB / 0.7061 GB, free: 11.11 MB / 0.545 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.137e-05/0.2255, allocations: 20 kB / 0.7061 GB, free: 11.09 MB / 0.545 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001134/0.2266, allocations: 0.7688 MB / 0.7069 GB, free: 10.32 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 0.004796/0.2314, allocations: 4.623 MB / 0.7114 GB, free: 5.34 MB / 0.545 GB Notification: Performance of preOpt comSubExp (simulation): time 0.000557/0.232, allocations: 392.2 kB / 0.7118 GB, free: 4.949 MB / 0.545 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003391/0.2323, allocations: 281.2 kB / 0.712 GB, free: 4.672 MB / 0.545 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003718/0.2327, allocations: 425.8 kB / 0.7124 GB, free: 4.164 MB / 0.545 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.254e-05/0.2328, allocations: 38.89 kB / 0.7125 GB, free: 4.117 MB / 0.545 GB Notification: Performance of pre-optimization done (n=40): time 2.285e-06/0.2328, allocations: 0 / 0.7125 GB, free: 4.117 MB / 0.545 GB Notification: Performance of matching and sorting (n=40): time 0.001824/0.2346, allocations: 0.8701 MB / 0.7133 GB, free: 3.219 MB / 0.545 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.551e-05/0.2347, allocations: 55.41 kB / 0.7134 GB, free: 3.152 MB / 0.545 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001113/0.2358, allocations: 0.9467 MB / 0.7143 GB, free: 2.199 MB / 0.545 GB Notification: Performance of collectPreVariables (initialization): time 6.881e-05/0.2359, allocations: 33.7 kB / 0.7143 GB, free: 2.16 MB / 0.545 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003694/0.2362, allocations: 0.5067 MB / 0.7148 GB, free: 1.648 MB / 0.545 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001447/0.2364, allocations: 145.9 kB / 0.715 GB, free: 1.504 MB / 0.545 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001735/0.2366, allocations: 130 kB / 0.7151 GB, free: 1.367 MB / 0.545 GB Notification: Performance of setup shared object (initialization): time 0.0001143/0.2367, allocations: 333.9 kB / 0.7154 GB, free: 1.035 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003062/0.237, allocations: 234.9 kB / 0.7156 GB, free: 0.8047 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004522/0.2375, allocations: 439.1 kB / 0.716 GB, free: 296 kB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007713/0.2382, allocations: 0.6591 MB / 0.7167 GB, free: 15.55 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.358e-06/0.2382, allocations: 4 kB / 0.7167 GB, free: 15.55 MB / 0.5606 GB Notification: Performance of matching and sorting (n=70) (initialization): time 0.001421/0.2397, allocations: 0.8095 MB / 0.7175 GB, free: 14.73 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 2.105e-05/0.2397, allocations: 8 kB / 0.7175 GB, free: 14.72 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.347e-05/0.2397, allocations: 8 kB / 0.7175 GB, free: 14.71 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004168/0.2401, allocations: 88.69 kB / 0.7176 GB, free: 14.62 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003691/0.2405, allocations: 112.1 kB / 0.7177 GB, free: 14.52 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0004831/0.241, allocations: 0.6304 MB / 0.7183 GB, free: 13.86 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006592/0.2417, allocations: 79.39 kB / 0.7184 GB, free: 13.78 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.418e-05/0.2418, allocations: 35.92 kB / 0.7184 GB, free: 13.75 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0007412/0.2425, allocations: 0.5633 MB / 0.719 GB, free: 13.18 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004499/0.243, allocations: 434.3 kB / 0.7194 GB, free: 12.66 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007519/0.2437, allocations: 0.6686 MB / 0.72 GB, free: 11.92 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.945e-06/0.2437, allocations: 3.938 kB / 0.72 GB, free: 11.91 MB / 0.5606 GB Notification: Performance of matching and sorting (n=70) (initialization_lambda0): time 0.001253/0.245, allocations: 0.7814 MB / 0.7208 GB, free: 11.12 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 1.564e-05/0.245, allocations: 8 kB / 0.7208 GB, free: 11.11 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.236e-06/0.245, allocations: 4.625 kB / 0.7208 GB, free: 11.11 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001751/0.2452, allocations: 68.75 kB / 0.7209 GB, free: 11.04 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003335/0.2456, allocations: 111.8 kB / 0.721 GB, free: 10.93 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001608/0.2472, allocations: 1.884 MB / 0.7228 GB, free: 8.895 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006655/0.2479, allocations: 75.42 kB / 0.7229 GB, free: 8.82 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.511e-05/0.2479, allocations: 28 kB / 0.7229 GB, free: 8.793 MB / 0.5606 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 25 * 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 (64): * Single equations (assignments): 63 * 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 {(1,6)} Notification: Performance of prepare postOptimizeDAE: time 0.0002402/0.2482, allocations: 220.1 kB / 0.7231 GB, free: 8.57 MB / 0.5606 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003017/0.2485, allocations: 94.81 kB / 0.7232 GB, free: 8.477 MB / 0.5606 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001164/0.2496, allocations: 0.6416 MB / 0.7239 GB, free: 7.824 MB / 0.5606 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.094e-05/0.2497, allocations: 7.938 kB / 0.7239 GB, free: 7.816 MB / 0.5606 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.494e-06/0.2497, allocations: 0 / 0.7239 GB, free: 7.816 MB / 0.5606 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0008718/0.2506, allocations: 0.8204 MB / 0.7247 GB, free: 6.906 MB / 0.5606 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 0.002696/0.2533, allocations: 1.689 MB / 0.7263 GB, free: 5.133 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.634e-06/0.2533, allocations: 4 kB / 0.7263 GB, free: 5.129 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003349/0.2536, allocations: 83.83 kB / 0.7264 GB, free: 5.047 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001284/0.2538, allocations: 40.78 kB / 0.7264 GB, free: 5.004 MB / 0.5606 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.712e-05/0.2538, allocations: 11.98 kB / 0.7264 GB, free: 4.992 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.000365/0.2542, allocations: 0.5679 MB / 0.727 GB, free: 4.398 MB / 0.5606 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.124e-06/0.2542, allocations: 4.125 kB / 0.727 GB, free: 4.395 MB / 0.5606 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00135/0.2556, allocations: 0.9499 MB / 0.7279 GB, free: 3.41 MB / 0.5606 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004432/0.256, allocations: 248 kB / 0.7282 GB, free: 3.148 MB / 0.5606 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001578/0.2562, allocations: 11.94 kB / 0.7282 GB, free: 3.137 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005897/0.2568, allocations: 31.95 kB / 0.7282 GB, free: 3.105 MB / 0.5606 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.584e-05/0.2568, allocations: 31.91 kB / 0.7282 GB, free: 3.074 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.472e-05/0.2569, allocations: 19.98 kB / 0.7283 GB, free: 3.055 MB / 0.5606 GB Notification: Performance of sorting global known variables: time 0.0009933/0.2579, allocations: 0.6707 MB / 0.7289 GB, free: 2.391 MB / 0.5606 GB Notification: Performance of sort global known variables: time 1.11e-07/0.2579, allocations: 0 / 0.7289 GB, free: 2.391 MB / 0.5606 GB Notification: Performance of remove unused functions: time 0.001756/0.2597, allocations: 0.565 MB / 0.7295 GB, free: 1.824 MB / 0.5606 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 3 (vol[1].dynBal.U,vol[2].dynBal.U,vol[3].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 (39): * Single equations (assignments): 36 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * 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 {(1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0007741/0.2605, allocations: 284.3 kB / 0.7297 GB, free: 1.547 MB / 0.5606 GB Notification: Performance of simCode: created initialization part: time 0.001838/0.2623, allocations: 1.013 MB / 0.7307 GB, free: 0.5234 MB / 0.5606 GB Notification: Performance of simCode: created event and clocks part: time 4.608e-06/0.2623, allocations: 0 / 0.7307 GB, free: 0.5234 MB / 0.5606 GB Notification: Performance of simCode: created simulation system equations: time 0.000403/0.2627, allocations: 243.7 kB / 0.731 GB, free: 292 kB / 0.5606 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002606/0.2654, allocations: 0.5638 MB / 0.7315 GB, free: 15.75 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003663/0.269, allocations: 2.014 MB / 0.7335 GB, free: 13.69 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009461/0.27, allocations: 1.212 MB / 0.7347 GB, free: 12.45 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002543/0.2703, allocations: 83.34 kB / 0.7347 GB, free: 12.37 MB / 0.5762 GB Notification: Performance of SimCode: time 5.31e-07/0.2703, allocations: 0 / 0.7347 GB, free: 12.37 MB / 0.5762 GB Notification: Performance of Templates: time 0.3791/0.6494, allocations: 23.1 MB / 0.7573 GB, free: 80.15 MB / 0.5762 GB make -j1 -f IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.makefile (rm -f IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.pipe ; mkfifo IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.pipe >> ../files/IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.sim & ./IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.pipe 2>&1)