Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.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-master/package.mo", uses=false)
Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-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(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity")
translateModel(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.000946/0.000946, allocations: 91.06 kB / 15.36 MB, free: 0.7383 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0081/0.0081, allocations: 172.6 kB / 16.26 MB, free: 6.613 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.423/1.423, allocations: 223.3 MB / 240.3 MB, free: 5.371 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9609/0.9609, allocations: 135.3 MB / 426.7 MB, free: 14.23 MB / 350.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.0003349/0.0003354, allocations: 15.94 kB / 0.5076 GB, free: 4.773 MB / 414.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1845/0.1849, allocations: 82.31 MB / 0.588 GB, free: 2.633 MB / 494.1 MB
Notification: Performance of NFInst.instantiate(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity): time 0.4424/0.6273, allocations: 30.83 MB / 0.6181 GB, free: 34.01 MB / 0.4981 GB
Notification: Performance of NFInst.instExpressions: time 0.009147/0.6365, allocations: 5.31 MB / 0.6233 GB, free: 33.52 MB / 0.4981 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.00151/0.6381, allocations: 35.59 kB / 0.6233 GB, free: 33.51 MB / 0.4981 GB
Notification: Performance of NFTyping.typeComponents: time 0.001122/0.6392, allocations: 318.4 kB / 0.6236 GB, free: 33.41 MB / 0.4981 GB
Notification: Performance of NFTyping.typeBindings: time 0.004184/0.6434, allocations: 1.321 MB / 0.6249 GB, free: 32.97 MB / 0.4981 GB
Notification: Performance of NFTyping.typeClassSections: time 0.002195/0.6456, allocations: 0.7558 MB / 0.6256 GB, free: 32.83 MB / 0.4981 GB
Notification: Performance of NFFlatten.flatten: time 0.003257/0.6489, allocations: 2.848 MB / 0.6284 GB, free: 32.2 MB / 0.4981 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0008413/0.6498, allocations: 0.5071 MB / 0.6289 GB, free: 31.98 MB / 0.4981 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.001338/0.6511, allocations: 0.6661 MB / 0.6296 GB, free: 31.69 MB / 0.4981 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0008203/0.652, allocations: 0.5465 MB / 0.6301 GB, free: 31.46 MB / 0.4981 GB
Notification: Performance of NFPackage.collectConstants: time 8.34e-05/0.652, allocations: 21 kB / 0.6301 GB, free: 31.46 MB / 0.4981 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.002302/0.6544, allocations: 1.141 MB / 0.6312 GB, free: 31.05 MB / 0.4981 GB
Notification: Performance of NFScalarize.scalarize: time 0.0001784/0.6546, allocations: 133.8 kB / 0.6313 GB, free: 30.99 MB / 0.4981 GB
Notification: Performance of NFVerifyModel.verify: time 0.0004036/0.655, allocations: 368.6 kB / 0.6317 GB, free: 30.77 MB / 0.4981 GB
Notification: Performance of NFConvertDAE.convert: time 0.002248/0.6572, allocations: 1.464 MB / 0.6331 GB, free: 30.33 MB / 0.4981 GB
Notification: Performance of FrontEnd - DAE generated: time 5.541e-06/0.6572, allocations: 4 kB / 0.6331 GB, free: 30.32 MB / 0.4981 GB
Notification: Performance of FrontEnd: time 2.284e-06/0.6573, allocations: 0 / 0.6331 GB, free: 30.32 MB / 0.4981 GB
Notification: Performance of Transformations before backend: time 1.226e-05/0.6573, allocations: 0 / 0.6331 GB, free: 30.32 MB / 0.4981 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 110
 * Number of variables: 110
Notification: Performance of Generate backend data structure: time 0.001336/0.6586, allocations: 0.9551 MB / 0.6341 GB, free: 29.61 MB / 0.4981 GB
Notification: Performance of prepare preOptimizeDAE: time 4.218e-05/0.6587, allocations: 9.781 kB / 0.6341 GB, free: 29.61 MB / 0.4981 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002333/0.661, allocations: 286.7 kB / 0.6343 GB, free: 29.54 MB / 0.4981 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001221/0.6622, allocations: 0.6725 MB / 0.635 GB, free: 29.12 MB / 0.4981 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.271e-05/0.6623, allocations: 35.03 kB / 0.635 GB, free: 29.1 MB / 0.4981 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 8.705e-05/0.6624, allocations: 52.66 kB / 0.6351 GB, free: 29.08 MB / 0.4981 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008577/0.6633, allocations: 0.5282 MB / 0.6356 GB, free: 28.8 MB / 0.4981 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.91e-05/0.6633, allocations: 0 / 0.6356 GB, free: 28.8 MB / 0.4981 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.525e-05/0.6633, allocations: 21.94 kB / 0.6356 GB, free: 28.79 MB / 0.4981 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.314e-05/0.6634, allocations: 11.34 kB / 0.6356 GB, free: 28.79 MB / 0.4981 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006348/0.664, allocations: 357.5 kB / 0.636 GB, free: 28.67 MB / 0.4981 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 0.002514/0.6665, allocations: 2.821 MB / 0.6387 GB, free: 26.37 MB / 0.4981 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0004982/0.667, allocations: 305.2 kB / 0.639 GB, free: 26.22 MB / 0.4981 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0002372/0.6673, allocations: 149.2 kB / 0.6392 GB, free: 26.15 MB / 0.4981 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.000411/0.6677, allocations: 0.6643 MB / 0.6398 GB, free: 25.39 MB / 0.4981 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.473e-05/0.6677, allocations: 41.95 kB / 0.6399 GB, free: 25.34 MB / 0.4981 GB
Notification: Performance of pre-optimization done (n=28): time 2.184e-06/0.6677, allocations: 0 / 0.6399 GB, free: 25.34 MB / 0.4981 GB
Notification: Performance of matching and sorting (n=40): time 0.006024/0.6738, allocations: 2.092 MB / 0.6419 GB, free: 24.29 MB / 0.4981 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.616e-05/0.6738, allocations: 86.48 kB / 0.642 GB, free: 24.19 MB / 0.4981 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006392/0.6745, allocations: 0.522 MB / 0.6425 GB, free: 23.95 MB / 0.4981 GB
Notification: Performance of collectPreVariables (initialization): time 3.766e-05/0.6745, allocations: 29.7 kB / 0.6425 GB, free: 23.91 MB / 0.4981 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0001764/0.6747, allocations: 323 kB / 0.6428 GB, free: 23.65 MB / 0.4981 GB
Notification: Performance of collectInitialBindings (initialization): time 9.439e-05/0.6748, allocations: 145.6 kB / 0.643 GB, free: 23.54 MB / 0.4981 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 5.7e-05/0.6749, allocations: 44.03 kB / 0.643 GB, free: 23.5 MB / 0.4981 GB
Notification: Performance of setup shared object (initialization): time 8.029e-05/0.675, allocations: 365.5 kB / 0.6434 GB, free: 23.17 MB / 0.4981 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003294/0.6753, allocations: 166.3 kB / 0.6435 GB, free: 23.11 MB / 0.4981 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003848/0.6757, allocations: 294.8 kB / 0.6438 GB, free: 22.9 MB / 0.4981 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0007106/0.6764, allocations: 472.2 kB / 0.6442 GB, free: 22.61 MB / 0.4981 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.196e-06/0.6764, allocations: 2.625 kB / 0.6442 GB, free: 22.61 MB / 0.4981 GB
Notification: Performance of matching and sorting (n=55) (initialization): time 0.001666/0.6781, allocations: 0.7345 MB / 0.645 GB, free: 22.3 MB / 0.4981 GB
Notification: Performance of prepare postOptimizeDAE: time 8.919e-05/0.6782, allocations: 179.2 kB / 0.6451 GB, free: 22.09 MB / 0.4981 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.358e-06/0.6782, allocations: 10.56 kB / 0.6451 GB, free: 22.08 MB / 0.4981 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001001/0.6792, allocations: 273.5 kB / 0.6454 GB, free: 22 MB / 0.4981 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002768/0.6795, allocations: 67.17 kB / 0.6455 GB, free: 22 MB / 0.4981 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005636/0.6852, allocations: 4.341 MB / 0.6497 GB, free: 18.5 MB / 0.4981 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001239/0.6864, allocations: 81.09 kB / 0.6498 GB, free: 18.48 MB / 0.4981 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.165e-05/0.6865, allocations: 20.09 kB / 0.6498 GB, free: 18.48 MB / 0.4981 GB
Notification: Performance of prepare postOptimizeDAE: time 1.153e-05/0.6865, allocations: 9.594 kB / 0.6498 GB, free: 18.48 MB / 0.4981 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001628/0.6881, allocations: 0.6593 MB / 0.6505 GB, free: 18.22 MB / 0.4981 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.123e-06/0.6882, allocations: 7.344 kB / 0.6505 GB, free: 18.21 MB / 0.4981 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0009122/0.6891, allocations: 274.2 kB / 0.6507 GB, free: 18.14 MB / 0.4981 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000245/0.6893, allocations: 68.69 kB / 0.6508 GB, free: 18.13 MB / 0.4981 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005585/0.6949, allocations: 4.344 MB / 0.655 GB, free: 14.62 MB / 0.4981 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001274/0.6962, allocations: 77.84 kB / 0.6551 GB, free: 14.6 MB / 0.4981 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.224e-05/0.6963, allocations: 22.08 kB / 0.6551 GB, free: 14.6 MB / 0.4981 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 14
 * 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 (39):
 * Single equations (assignments): 37
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 2
 * 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): 2 systems
   {(2,8), (2,6)}
Notification: Performance of prepare postOptimizeDAE: time 0.000422/0.6967, allocations: 286.5 kB / 0.6554 GB, free: 14.35 MB / 0.4981 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001594/0.6969, allocations: 61.25 kB / 0.6555 GB, free: 14.32 MB / 0.4981 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001805/0.6987, allocations: 0.6714 MB / 0.6561 GB, free: 14.04 MB / 0.4981 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.147e-06/0.6987, allocations: 4.469 kB / 0.6561 GB, free: 14.04 MB / 0.4981 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 3.597e-06/0.6987, allocations: 3.938 kB / 0.6561 GB, free: 14.03 MB / 0.4981 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001559/0.7003, allocations: 0.749 MB / 0.6569 GB, free: 13.57 MB / 0.4981 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002956/0.7033, allocations: 1.695 MB / 0.6585 GB, free: 12.66 MB / 0.4981 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.068e-06/0.7033, allocations: 0.75 kB / 0.6585 GB, free: 12.66 MB / 0.4981 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002371/0.7035, allocations: 57.17 kB / 0.6586 GB, free: 12.65 MB / 0.4981 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.001016/0.7046, allocations: 245.9 kB / 0.6588 GB, free: 12.58 MB / 0.4981 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.905e-05/0.7046, allocations: 14.38 kB / 0.6588 GB, free: 12.57 MB / 0.4981 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005109/0.7097, allocations: 3.955 MB / 0.6627 GB, free: 9.277 MB / 0.4981 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.184e-06/0.7098, allocations: 1.312 kB / 0.6627 GB, free: 9.277 MB / 0.4981 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002203/0.712, allocations: 0.9459 MB / 0.6636 GB, free: 8.801 MB / 0.4981 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0003202/0.7123, allocations: 192.4 kB / 0.6638 GB, free: 8.641 MB / 0.4981 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.038e-05/0.7124, allocations: 9.422 kB / 0.6638 GB, free: 8.637 MB / 0.4981 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009822/0.7134, allocations: 70.58 kB / 0.6639 GB, free: 8.625 MB / 0.4981 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000131/0.7135, allocations: 42.11 kB / 0.6639 GB, free: 8.609 MB / 0.4981 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.859e-05/0.7136, allocations: 16.88 kB / 0.6639 GB, free: 8.605 MB / 0.4981 GB
Notification: Performance of sorting global known variables: time 0.0005924/0.7142, allocations: 368 kB / 0.6643 GB, free: 8.441 MB / 0.4981 GB
Notification: Performance of sort global known variables: time 1.3e-07/0.7142, allocations: 0 / 0.6643 GB, free: 8.441 MB / 0.4981 GB
Notification: Performance of remove unused functions: time 0.00181/0.716, allocations: 417.3 kB / 0.6647 GB, free: 8.391 MB / 0.4981 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 2
 * Number of states: 2 (vol.ports[1].h_outflow,vol1.ports[1].h_outflow)
 * 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 (28):
 * Single equations (assignments): 26
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 2
 * 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): 2 systems
   {(2,6), (2,4)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.0006807/0.7167, allocations: 301.2 kB / 0.665 GB, free: 8.23 MB / 0.4981 GB
Notification: Performance of simCode: created initialization part: time 0.003295/0.72, allocations: 1.37 MB / 0.6663 GB, free: 23.43 MB / 0.5137 GB
Notification: Performance of simCode: created event and clocks part: time 3.647e-06/0.72, allocations: 0 / 0.6663 GB, free: 23.43 MB / 0.5137 GB
Notification: Performance of simCode: created simulation system equations: time 0.001288/0.7213, allocations: 0.5523 MB / 0.6668 GB, free: 23.08 MB / 0.5137 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001928/0.7232, allocations: 345 kB / 0.6672 GB, free: 23 MB / 0.5137 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002081/0.7253, allocations: 1.528 MB / 0.6687 GB, free: 22.04 MB / 0.5137 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005948/0.7259, allocations: 0.9242 MB / 0.6696 GB, free: 21.32 MB / 0.5137 GB
Notification: Performance of simCode: alias equations: time 0.0006656/0.7266, allocations: 135.2 kB / 0.6697 GB, free: 21.28 MB / 0.5137 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001484/0.7268, allocations: 51.84 kB / 0.6697 GB, free: 21.27 MB / 0.5137 GB
Notification: Performance of SimCode: time 6.51e-07/0.7268, allocations: 1.375 kB / 0.6697 GB, free: 21.27 MB / 0.5137 GB
Notification: Performance of Templates: time 0.03443/0.7612, allocations: 17.4 MB / 0.6867 GB, free: 16.63 MB / 0.5137 GB
make -j1 -f IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.makefile
(rm -f IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.sim & ./IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity  -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe 2>&1)