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 0.001036/0.001036, allocations: 113.6 kB / 16.37 MB, free: 6.012 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001017/0.001017, allocations: 191.2 kB / 17.3 MB, free: 5.613 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.354/1.354, allocations: 222.9 MB / 241 MB, free: 15.14 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.8595/0.8595, allocations: 132.2 MB / 423.4 MB, free: 6.574 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001384/0.001384, allocations: 63.91 kB / 0.5032 GB, free: 10.91 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4218/0.4232, allocations: 80.19 MB / 0.5815 GB, free: 27.65 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater): time 0.026/0.4493, allocations: 23.36 MB / 0.6043 GB, free: 6.762 MB / 446.1 MB Notification: Performance of NFInst.instExpressions: time 0.01116/0.4605, allocations: 6.827 MB / 0.611 GB, free: 15.95 MB / 462.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001696/0.4622, allocations: 33.66 kB / 0.611 GB, free: 15.92 MB / 462.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001333/0.4637, allocations: 333.8 kB / 0.6113 GB, free: 15.59 MB / 462.1 MB Notification: Performance of NFTyping.typeBindings: time 0.003751/0.4675, allocations: 0.8931 MB / 0.6122 GB, free: 14.7 MB / 462.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.002882/0.4704, allocations: 0.7643 MB / 0.6129 GB, free: 13.95 MB / 462.1 MB Notification: Performance of NFFlatten.flatten: time 0.005772/0.4761, allocations: 3.466 MB / 0.6163 GB, free: 10.48 MB / 462.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.002428/0.4786, allocations: 1.324 MB / 0.6176 GB, free: 9.141 MB / 462.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.003901/0.4825, allocations: 1.212 MB / 0.6188 GB, free: 7.934 MB / 462.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.002246/0.4848, allocations: 0.9334 MB / 0.6197 GB, free: 6.996 MB / 462.1 MB Notification: Performance of NFPackage.collectConstants: time 0.000302/0.4851, allocations: 92 kB / 0.6198 GB, free: 6.906 MB / 462.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002619/0.4878, allocations: 0.772 MB / 0.6206 GB, free: 6.133 MB / 462.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0005342/0.4883, allocations: 291 kB / 0.6208 GB, free: 5.848 MB / 462.1 MB Notification: Performance of NFVerifyModel.verify: time 0.001287/0.4896, allocations: 0.6337 MB / 0.6215 GB, free: 5.211 MB / 462.1 MB Notification: Performance of NFConvertDAE.convert: time 0.003668/0.4933, allocations: 1.901 MB / 0.6233 GB, free: 3.309 MB / 462.1 MB Notification: Performance of FrontEnd - DAE generated: time 6.392e-06/0.4933, allocations: 0 / 0.6233 GB, free: 3.309 MB / 462.1 MB Notification: Performance of FrontEnd: time 2.315e-06/0.4933, allocations: 0 / 0.6233 GB, free: 3.309 MB / 462.1 MB Notification: Performance of Transformations before backend: time 3.118e-05/0.4934, allocations: 0 / 0.6233 GB, free: 3.309 MB / 462.1 MB 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 0.003155/0.4965, allocations: 1.556 MB / 0.6248 GB, free: 1.703 MB / 462.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.911e-05/0.4966, allocations: 8.031 kB / 0.6248 GB, free: 1.695 MB / 462.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000714/0.4973, allocations: 143.4 kB / 0.625 GB, free: 1.555 MB / 462.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002954/0.5003, allocations: 1.217 MB / 0.6262 GB, free: 300 kB / 462.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.947e-05/0.5004, allocations: 61.98 kB / 0.6262 GB, free: 240 kB / 462.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001584/0.5005, allocations: 76 kB / 0.6263 GB, free: 164 kB / 462.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002156/0.5027, allocations: 1.037 MB / 0.6273 GB, free: 15.07 MB / 478.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.405e-05/0.5028, allocations: 7.922 kB / 0.6273 GB, free: 15.07 MB / 478.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001088/0.5029, allocations: 32 kB / 0.6273 GB, free: 15.04 MB / 478.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.517e-05/0.5029, allocations: 20 kB / 0.6274 GB, free: 15.02 MB / 478.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001638/0.5046, allocations: 0.7688 MB / 0.6281 GB, free: 14.25 MB / 478.1 MB 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 0.007722/0.5123, allocations: 4.627 MB / 0.6326 GB, free: 9.262 MB / 478.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0007893/0.5131, allocations: 391.3 kB / 0.633 GB, free: 8.871 MB / 478.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004747/0.5136, allocations: 266 kB / 0.6333 GB, free: 8.609 MB / 478.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0004663/0.5141, allocations: 429.8 kB / 0.6337 GB, free: 8.098 MB / 478.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.799e-05/0.5142, allocations: 42.89 kB / 0.6337 GB, free: 8.047 MB / 478.1 MB Notification: Performance of pre-optimization done (n=40): time 3.727e-06/0.5142, allocations: 0 / 0.6337 GB, free: 8.047 MB / 478.1 MB Notification: Performance of matching and sorting (n=40): time 0.00256/0.5167, allocations: 0.8624 MB / 0.6346 GB, free: 7.156 MB / 478.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 5.839e-05/0.5168, allocations: 55.41 kB / 0.6346 GB, free: 7.09 MB / 478.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001723/0.5186, allocations: 0.9543 MB / 0.6355 GB, free: 6.129 MB / 478.1 MB Notification: Performance of collectPreVariables (initialization): time 7.704e-05/0.5186, allocations: 33.7 kB / 0.6356 GB, free: 6.09 MB / 478.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0005499/0.5192, allocations: 0.5107 MB / 0.6361 GB, free: 5.574 MB / 478.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001951/0.5194, allocations: 141.9 kB / 0.6362 GB, free: 5.434 MB / 478.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002341/0.5197, allocations: 122.2 kB / 0.6363 GB, free: 5.309 MB / 478.1 MB Notification: Performance of setup shared object (initialization): time 0.000154/0.5198, allocations: 337.8 kB / 0.6366 GB, free: 4.973 MB / 478.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000451/0.5203, allocations: 226.9 kB / 0.6369 GB, free: 4.746 MB / 478.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007874/0.5211, allocations: 451.1 kB / 0.6373 GB, free: 4.223 MB / 478.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001184/0.5223, allocations: 0.659 MB / 0.6379 GB, free: 3.488 MB / 478.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.721e-06/0.5223, allocations: 0 / 0.6379 GB, free: 3.488 MB / 478.1 MB Notification: Performance of matching and sorting (n=70) (initialization): time 0.002035/0.5243, allocations: 0.8132 MB / 0.6387 GB, free: 2.664 MB / 478.1 MB Notification: Performance of prepare postOptimizeDAE: time 3.398e-05/0.5244, allocations: 10.5 kB / 0.6387 GB, free: 2.656 MB / 478.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.614e-05/0.5244, allocations: 4.531 kB / 0.6387 GB, free: 2.652 MB / 478.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005704/0.525, allocations: 92.78 kB / 0.6388 GB, free: 2.559 MB / 478.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005273/0.5255, allocations: 111.8 kB / 0.6389 GB, free: 2.449 MB / 478.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006833/0.5262, allocations: 0.6264 MB / 0.6395 GB, free: 1.797 MB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009996/0.5272, allocations: 79.45 kB / 0.6396 GB, free: 1.719 MB / 478.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.942e-05/0.5273, allocations: 31.98 kB / 0.6397 GB, free: 1.688 MB / 478.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001037/0.5284, allocations: 0.5672 MB / 0.6402 GB, free: 1.113 MB / 478.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005409/0.5289, allocations: 430.3 kB / 0.6406 GB, free: 0.6055 MB / 478.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0009177/0.5299, allocations: 0.6724 MB / 0.6413 GB, free: 15.86 MB / 494.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.179e-06/0.5299, allocations: 4 kB / 0.6413 GB, free: 15.85 MB / 494.1 MB Notification: Performance of matching and sorting (n=70) (initialization_lambda0): time 0.001263/0.5312, allocations: 0.7817 MB / 0.642 GB, free: 15.06 MB / 494.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.428e-05/0.5312, allocations: 8 kB / 0.642 GB, free: 15.05 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.943e-06/0.5312, allocations: 8.156 kB / 0.6421 GB, free: 15.04 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001687/0.5314, allocations: 64.8 kB / 0.6421 GB, free: 14.98 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003493/0.5317, allocations: 107.8 kB / 0.6422 GB, free: 14.87 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00165/0.5334, allocations: 1.9 MB / 0.6441 GB, free: 12.82 MB / 494.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006531/0.5341, allocations: 67.55 kB / 0.6441 GB, free: 12.75 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.897e-05/0.5341, allocations: 24 kB / 0.6442 GB, free: 12.73 MB / 494.1 MB 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 0.0002706/0.5344, allocations: 217 kB / 0.6444 GB, free: 12.51 MB / 494.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001784/0.5346, allocations: 90.91 kB / 0.6445 GB, free: 12.42 MB / 494.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001226/0.5358, allocations: 0.6574 MB / 0.6451 GB, free: 11.76 MB / 494.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.262e-05/0.5358, allocations: 7.938 kB / 0.6451 GB, free: 11.75 MB / 494.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.673e-06/0.5358, allocations: 0 / 0.6451 GB, free: 11.75 MB / 494.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0008458/0.5367, allocations: 0.8165 MB / 0.6459 GB, free: 10.84 MB / 494.1 MB 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 0.002454/0.5392, allocations: 1.689 MB / 0.6476 GB, free: 9.066 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.599e-06/0.5392, allocations: 0 / 0.6476 GB, free: 9.066 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003262/0.5395, allocations: 79.89 kB / 0.6476 GB, free: 8.988 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.000123/0.5397, allocations: 40.89 kB / 0.6477 GB, free: 8.945 MB / 494.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.184e-05/0.5397, allocations: 19.98 kB / 0.6477 GB, free: 8.926 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0003609/0.5401, allocations: 0.5679 MB / 0.6482 GB, free: 8.332 MB / 494.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.523e-06/0.5401, allocations: 0 / 0.6482 GB, free: 8.332 MB / 494.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001161/0.5413, allocations: 0.9538 MB / 0.6492 GB, free: 7.348 MB / 494.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0004407/0.5417, allocations: 247.8 kB / 0.6494 GB, free: 7.086 MB / 494.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.646e-05/0.5418, allocations: 8 kB / 0.6494 GB, free: 7.078 MB / 494.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004623/0.5423, allocations: 39.88 kB / 0.6495 GB, free: 7.039 MB / 494.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.761e-05/0.5423, allocations: 31.97 kB / 0.6495 GB, free: 7.008 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.319e-05/0.5424, allocations: 23.98 kB / 0.6495 GB, free: 6.984 MB / 494.1 MB Notification: Performance of sorting global known variables: time 0.0008196/0.5432, allocations: 0.6668 MB / 0.6502 GB, free: 6.324 MB / 494.1 MB Notification: Performance of sort global known variables: time 2.61e-07/0.5432, allocations: 0 / 0.6502 GB, free: 6.324 MB / 494.1 MB Notification: Performance of remove unused functions: time 0.001527/0.5448, allocations: 0.5574 MB / 0.6507 GB, free: 5.766 MB / 494.1 MB 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 0.0006569/0.5454, allocations: 294.4 kB / 0.651 GB, free: 5.48 MB / 494.1 MB Notification: Performance of simCode: created initialization part: time 0.001681/0.5471, allocations: 0.996 MB / 0.652 GB, free: 4.473 MB / 494.1 MB Notification: Performance of simCode: created event and clocks part: time 4.298e-06/0.5471, allocations: 1.688 kB / 0.652 GB, free: 4.473 MB / 494.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0003474/0.5475, allocations: 243.7 kB / 0.6522 GB, free: 4.234 MB / 494.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002147/0.5497, allocations: 0.5679 MB / 0.6527 GB, free: 3.691 MB / 494.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002946/0.5526, allocations: 2.011 MB / 0.6547 GB, free: 1.637 MB / 494.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007768/0.5534, allocations: 1.231 MB / 0.6559 GB, free: 384 kB / 494.1 MB Notification: Performance of simCode: alias equations: time 0.001024/0.5544, allocations: 444.6 kB / 0.6563 GB, free: 15.95 MB / 0.4981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001631/0.5546, allocations: 71.42 kB / 0.6564 GB, free: 15.88 MB / 0.4981 GB Notification: Performance of SimCode: time 7.21e-07/0.5546, allocations: 0 / 0.6564 GB, free: 15.88 MB / 0.4981 GB Notification: Performance of Templates: time 0.03421/0.5888, allocations: 20.4 MB / 0.6763 GB, free: 11.76 MB / 0.5137 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 -s cvode -lv LOG_STATS > IDEAS_IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater.pipe 2>&1)