Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.Examples.Performance.PressureDrop.ParallelDp.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: "" <> buildModelFMU(IDEAS.Fluid.Examples.Performance.PressureDrop.ParallelDp,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Examples_Performance_PressureDrop_ParallelDp",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.Examples.Performance.PressureDrop.ParallelDp,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Examples_Performance_PressureDrop_ParallelDp",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009543/0.0009543, allocations: 97.64 kB / 15.36 MB, free: 0.7344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.006729/0.006729, allocations: 170.1 kB / 16.27 MB, free: 6.652 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.405/1.405, allocations: 223.3 MB / 240.3 MB, free: 5.328 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9182/0.9182, allocations: 135.3 MB / 426.7 MB, free: 14.22 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0002904/0.0002904, allocations: 8 kB / 0.5077 GB, free: 4.68 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1414/0.1417, allocations: 82.31 MB / 0.5881 GB, free: 2.543 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Examples.Performance.PressureDrop.ParallelDp): time 0.4057/0.5474, allocations: 157.3 MB / 0.7417 GB, free: 9.734 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.005372/0.5529, allocations: 3.591 MB / 0.7452 GB, free: 7.195 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004261/0.5533, allocations: 13.75 kB / 0.7452 GB, free: 7.188 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.0005728/0.5539, allocations: 132.4 kB / 0.7453 GB, free: 7.113 MB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.001381/0.5553, allocations: 0.491 MB / 0.7458 GB, free: 6.859 MB / 0.5606 GB Notification: Performance of NFTyping.typeClassSections: time 0.001207/0.5565, allocations: 399.1 kB / 0.7462 GB, free: 6.664 MB / 0.5606 GB Notification: Performance of NFFlatten.flatten: time 0.003543/0.5601, allocations: 3.514 MB / 0.7496 GB, free: 5.18 MB / 0.5606 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002787/0.5629, allocations: 2.214 MB / 0.7518 GB, free: 3.801 MB / 0.5606 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001875/0.5648, allocations: 0.9075 MB / 0.7527 GB, free: 3.32 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001192/0.566, allocations: 0.7232 MB / 0.7534 GB, free: 2.914 MB / 0.5606 GB Notification: Performance of NFPackage.collectConstants: time 0.0001356/0.5661, allocations: 33.34 kB / 0.7534 GB, free: 2.914 MB / 0.5606 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001612/0.5677, allocations: 0.8015 MB / 0.7542 GB, free: 2.414 MB / 0.5606 GB Notification: Performance of NFScalarize.scalarize: time 0.000303/0.5681, allocations: 274.9 kB / 0.7544 GB, free: 2.145 MB / 0.5606 GB Notification: Performance of NFVerifyModel.verify: time 0.0006516/0.5687, allocations: 0.5339 MB / 0.755 GB, free: 1.602 MB / 0.5606 GB Notification: Performance of NFConvertDAE.convert: time 0.001562/0.5703, allocations: 1.378 MB / 0.7563 GB, free: 224 kB / 0.5606 GB Notification: Performance of FrontEnd - DAE generated: time 4.408e-06/0.5703, allocations: 0 / 0.7563 GB, free: 224 kB / 0.5606 GB Notification: Performance of FrontEnd: time 1.482e-06/0.5703, allocations: 0 / 0.7563 GB, free: 224 kB / 0.5606 GB Notification: Performance of Transformations before backend: time 1.561e-05/0.5703, allocations: 0 / 0.7563 GB, free: 224 kB / 0.5606 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 125 * Number of variables: 125 Notification: Performance of Generate backend data structure: time 0.002095/0.5724, allocations: 1.295 MB / 0.7576 GB, free: 14.87 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 4.137e-05/0.5725, allocations: 16.03 kB / 0.7576 GB, free: 14.85 MB / 0.5762 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001132/0.5726, allocations: 94.52 kB / 0.7577 GB, free: 14.75 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000757/0.5734, allocations: 194 kB / 0.7579 GB, free: 14.56 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001211/0.5746, allocations: 0.81 MB / 0.7587 GB, free: 13.7 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.035e-05/0.5746, allocations: 41 kB / 0.7587 GB, free: 13.65 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.555e-05/0.5747, allocations: 64 kB / 0.7588 GB, free: 13.59 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001275/0.576, allocations: 0.821 MB / 0.7596 GB, free: 12.7 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.814e-05/0.5761, allocations: 3.938 kB / 0.7596 GB, free: 12.7 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.616e-05/0.5761, allocations: 24 kB / 0.7596 GB, free: 12.67 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.632e-05/0.5761, allocations: 19.94 kB / 0.7596 GB, free: 12.65 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009871/0.5771, allocations: 0.5735 MB / 0.7602 GB, free: 12.07 MB / 0.5762 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 0.003934/0.5811, allocations: 4.248 MB / 0.7643 GB, free: 7.566 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007444/0.5818, allocations: 453 kB / 0.7647 GB, free: 7.117 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005179/0.5824, allocations: 355.1 kB / 0.7651 GB, free: 6.77 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002961/0.5827, allocations: 202.2 kB / 0.7653 GB, free: 6.535 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005491/0.5832, allocations: 331.1 kB / 0.7656 GB, free: 6.191 MB / 0.5762 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0002341/0.5835, allocations: 35.53 kB / 0.7656 GB, free: 6.156 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=33): time 2.154e-06/0.5835, allocations: 0 / 0.7656 GB, free: 6.156 MB / 0.5762 GB Notification: Performance of matching and sorting (n=33): time 0.001488/0.585, allocations: 0.7173 MB / 0.7663 GB, free: 5.434 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.759e-05/0.585, allocations: 85.11 kB / 0.7664 GB, free: 5.332 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001389/0.5864, allocations: 1.151 MB / 0.7675 GB, free: 4.164 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 4.889e-05/0.5865, allocations: 41.7 kB / 0.7676 GB, free: 4.117 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004242/0.5869, allocations: 484.4 kB / 0.768 GB, free: 3.641 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 0.000107/0.5871, allocations: 122.4 kB / 0.7681 GB, free: 3.52 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 6.871e-05/0.5871, allocations: 41.7 kB / 0.7682 GB, free: 3.473 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 0.0001158/0.5872, allocations: 322 kB / 0.7685 GB, free: 3.152 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004177/0.5877, allocations: 240.9 kB / 0.7687 GB, free: 2.918 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006716/0.5884, allocations: 0.546 MB / 0.7693 GB, free: 2.238 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009942/0.5894, allocations: 0.6867 MB / 0.7699 GB, free: 1.473 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.838e-06/0.5894, allocations: 0 / 0.7699 GB, free: 1.473 MB / 0.5762 GB Notification: Performance of matching and sorting (n=56) (initialization): time 0.001298/0.5907, allocations: 0.7747 MB / 0.7707 GB, free: 0.6836 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001736/0.5909, allocations: 283.2 kB / 0.771 GB, free: 332 kB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.978e-06/0.5909, allocations: 4 kB / 0.771 GB, free: 328 kB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.997e-05/0.5909, allocations: 8.109 kB / 0.771 GB, free: 320 kB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002161/0.5931, allocations: 378.7 kB / 0.7713 GB, free: 15.95 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003875/0.597, allocations: 6.087 MB / 0.7773 GB, free: 9.625 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001073/0.5981, allocations: 83.84 kB / 0.7773 GB, free: 9.543 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.049e-05/0.5982, allocations: 24 kB / 0.7774 GB, free: 9.52 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 1.155e-05/0.5982, allocations: 4 kB / 0.7774 GB, free: 9.516 MB / 0.5919 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001057/0.5992, allocations: 0.5831 MB / 0.7779 GB, free: 8.926 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.745e-06/0.5993, allocations: 8.656 kB / 0.778 GB, free: 8.918 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.21e-05/0.5993, allocations: 8 kB / 0.778 GB, free: 8.91 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006297/0.5999, allocations: 155.8 kB / 0.7781 GB, free: 8.758 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.02e-05/0.5999, allocations: 11.94 kB / 0.7781 GB, free: 8.746 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009262/0.6009, allocations: 71.92 kB / 0.7782 GB, free: 8.676 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.121e-05/0.6009, allocations: 24 kB / 0.7782 GB, free: 8.652 MB / 0.5919 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 5 (pulse_p.count,$PRE.pulse_p.count,pulse_p.T_start,$PRE.pulse_p.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (55): * Single equations (assignments): 44 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 10 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 10 systems {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0006206/0.6016, allocations: 481.7 kB / 0.7787 GB, free: 8.172 MB / 0.5919 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001412/0.6017, allocations: 106.7 kB / 0.7788 GB, free: 8.066 MB / 0.5919 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001009/0.6027, allocations: 0.5428 MB / 0.7793 GB, free: 7.512 MB / 0.5919 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.153e-06/0.6027, allocations: 4 kB / 0.7793 GB, free: 7.508 MB / 0.5919 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.843e-06/0.6027, allocations: 8 kB / 0.7793 GB, free: 7.5 MB / 0.5919 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.42e-06/0.6028, allocations: 0 / 0.7793 GB, free: 7.5 MB / 0.5919 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002407/0.6052, allocations: 1.503 MB / 0.7808 GB, free: 5.922 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.432e-06/0.6052, allocations: 4 kB / 0.7808 GB, free: 5.918 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007333/0.6059, allocations: 164 kB / 0.7809 GB, free: 5.758 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.101e-05/0.606, allocations: 11.92 kB / 0.781 GB, free: 5.746 MB / 0.5919 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.584e-05/0.606, allocations: 8 kB / 0.781 GB, free: 5.738 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003096/0.6091, allocations: 6.024 MB / 0.7868 GB, free: 15.48 MB / 0.6075 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.146e-06/0.6091, allocations: 0 / 0.7868 GB, free: 15.48 MB / 0.6075 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001087/0.6102, allocations: 0.6788 MB / 0.7875 GB, free: 14.77 MB / 0.6075 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005432/0.6108, allocations: 227.8 kB / 0.7877 GB, free: 14.52 MB / 0.6075 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001949/0.611, allocations: 11.98 kB / 0.7877 GB, free: 14.51 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007263/0.6117, allocations: 59.78 kB / 0.7878 GB, free: 14.45 MB / 0.6075 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001008/0.6118, allocations: 39.89 kB / 0.7878 GB, free: 14.41 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.84e-05/0.6118, allocations: 12 kB / 0.7878 GB, free: 14.4 MB / 0.6075 GB Notification: Performance of sorting global known variables: time 0.001384/0.6132, allocations: 0.8159 MB / 0.7886 GB, free: 13.58 MB / 0.6075 GB Notification: Performance of sort global known variables: time 2.214e-06/0.6132, allocations: 0 / 0.7886 GB, free: 13.58 MB / 0.6075 GB Notification: Performance of remove unused functions: time 0.001382/0.6146, allocations: 427.5 kB / 0.789 GB, free: 13.16 MB / 0.6075 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,pulse_p.T_start,pulse_p.count) * Number of discrete states: 1 (pulse_p.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (33): * Single equations (assignments): 21 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 10 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 10 systems {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001644/0.6163, allocations: 1.289 MB / 0.7903 GB, free: 11.83 MB / 0.6075 GB Notification: Performance of simCode: created initialization part: time 0.003483/0.6198, allocations: 1.204 MB / 0.7915 GB, free: 10.61 MB / 0.6075 GB Notification: Performance of simCode: created event and clocks part: time 4.839e-06/0.6198, allocations: 1.312 kB / 0.7915 GB, free: 10.61 MB / 0.6075 GB Notification: Performance of simCode: created simulation system equations: time 0.000866/0.6207, allocations: 331.4 kB / 0.7918 GB, free: 10.29 MB / 0.6075 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003785/0.6245, allocations: 0.6207 MB / 0.7924 GB, free: 9.68 MB / 0.6075 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01503/0.6395, allocations: 9.357 MB / 0.8015 GB, free: 15.9 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008218/0.6404, allocations: 1.178 MB / 0.8027 GB, free: 14.69 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.001192/0.6416, allocations: 376.3 kB / 0.8031 GB, free: 14.32 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004568/0.642, allocations: 331.3 kB / 0.8034 GB, free: 14 MB / 0.6231 GB Notification: Performance of SimCode: time 6.71e-07/0.6421, allocations: 4 kB / 0.8034 GB, free: 13.99 MB / 0.6231 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.4027/1.045, allocations: 28.95 MB / 0.8316 GB, free: 1.438 MB / 0.6387 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0003656/1.045, allocations: 287.8 kB / 0.8319 GB, free: 1.051 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.676/3.722, allocations: 0 / 0.8319 GB, free: 1.051 MB / 0.6387 GB (rm -f IDEAS_dev_IDEAS.Fluid.Examples.Performance.PressureDrop.ParallelDp.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.Examples.Performance.PressureDrop.ParallelDp.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.Examples.Performance.PressureDrop.ParallelDp.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.Examples.Performance.PressureDrop.ParallelDp.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IDEAS_dev_IDEAS_Fluid_Examples_Performance_PressureDrop_ParallelDp_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 IDEAS_dev_IDEAS_Fluid_Examples_Performance_PressureDrop_ParallelDp.fmu > IDEAS_dev_IDEAS.Fluid.Examples.Performance.PressureDrop.ParallelDp.pipe 2>&1)