Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo) Using package Complex with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo) Running command: translateModel(Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU") translateModel(Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.874/1.874, allocations: 292.3 MB / 308.1 MB, free: 4.266 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.002316/0.002316, allocations: 188.5 kB / 376.9 MB, free: 1.793 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.547/1.547, allocations: 205.1 MB / 0.6354 GB, free: 9.789 MB / 474.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0009566/0.0009566, allocations: 103 kB / 0.748 GB, free: 61.12 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.001089/0.001089, allocations: 51.92 kB / 0.8704 GB, free: 13.09 MB / 0.6042 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2541/0.2552, allocations: 114.5 MB / 0.9822 GB, free: 10.39 MB / 0.7136 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU): time 0.7971/1.052, allocations: 353.1 MB / 1.327 GB, free: 2.406 MB / 0.8855 GB Notification: Performance of NFInst.instExpressions: time 0.04536/1.098, allocations: 31.8 MB / 1.358 GB, free: 2.539 MB / 0.9167 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.008177/1.106, allocations: 151 kB / 1.358 GB, free: 2.391 MB / 0.9167 GB Notification: Performance of NFTyping.typeComponents: time 0.009243/1.115, allocations: 2.378 MB / 1.361 GB, free: 0 / 0.9167 GB Notification: Performance of NFTyping.typeBindings: time 0.02692/1.142, allocations: 7.553 MB / 1.368 GB, free: 8.422 MB / 0.9323 GB Notification: Performance of NFTyping.typeClassSections: time 0.01309/1.155, allocations: 3.728 MB / 1.372 GB, free: 4.73 MB / 0.9323 GB Notification: Performance of NFFlatten.flatten: time 0.6079/1.763, allocations: 16.18 MB / 1.387 GB, free: 10.58 MB / 0.9323 GB Notification: Performance of NFFlatten.resolveConnections: time 0.008546/1.772, allocations: 3.823 MB / 1.391 GB, free: 10.2 MB / 0.9323 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01633/1.788, allocations: 6.563 MB / 1.398 GB, free: 10.17 MB / 0.9323 GB Notification: Performance of NFSimplifyModel.simplify: time 0.01068/1.799, allocations: 3.983 MB / 1.401 GB, free: 10.16 MB / 0.9323 GB Notification: Performance of NFPackage.collectConstants: time 0.002201/1.801, allocations: 264.2 kB / 1.402 GB, free: 10.16 MB / 0.9323 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01425/1.815, allocations: 6.028 MB / 1.408 GB, free: 10.15 MB / 0.9323 GB Notification: Performance of NFScalarize.scalarize: time 0.003166/1.819, allocations: 1.252 MB / 1.409 GB, free: 10.12 MB / 0.9323 GB Notification: Performance of NFVerifyModel.verify: time 0.007312/1.826, allocations: 2.707 MB / 1.411 GB, free: 9.332 MB / 0.9323 GB Notification: Performance of NFConvertDAE.convert: time 0.01669/1.843, allocations: 8.935 MB / 1.42 GB, free: 8.457 MB / 0.9323 GB Notification: Performance of FrontEnd - DAE generated: time 7.214e-06/1.843, allocations: 0 / 1.42 GB, free: 8.457 MB / 0.9323 GB Notification: Performance of FrontEnd: time 2.545e-06/1.843, allocations: 0 / 1.42 GB, free: 8.457 MB / 0.9323 GB Notification: Performance of Transformations before backend: time 0.0003244/1.843, allocations: 0 / 1.42 GB, free: 8.457 MB / 0.9323 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 822 * Number of variables: 822 Notification: Performance of Generate backend data structure: time 0.0188/1.862, allocations: 6.313 MB / 1.426 GB, free: 21.88 MB / 0.948 GB Notification: Performance of prepare preOptimizeDAE: time 4.038e-05/1.862, allocations: 8.219 kB / 1.426 GB, free: 21.88 MB / 0.948 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0114/1.873, allocations: 2.014 MB / 1.428 GB, free: 21.52 MB / 0.948 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.009085/1.882, allocations: 3.717 MB / 1.432 GB, free: 20.7 MB / 0.948 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.003292/1.886, allocations: 0.8232 MB / 1.433 GB, free: 20.64 MB / 0.948 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001593/1.887, allocations: 359 kB / 1.433 GB, free: 20.64 MB / 0.948 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01513/1.903, allocations: 4.796 MB / 1.438 GB, free: 20.3 MB / 0.948 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.74e-05/1.903, allocations: 3.672 kB / 1.438 GB, free: 20.3 MB / 0.948 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0005458/1.903, allocations: 132.5 kB / 1.438 GB, free: 20.3 MB / 0.948 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002395/1.903, allocations: 154 kB / 1.438 GB, free: 20.29 MB / 0.948 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01804/1.922, allocations: 5.375 MB / 1.443 GB, free: 20.17 MB / 0.948 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 0.04152/1.963, allocations: 19.57 MB / 1.462 GB, free: 11.71 MB / 0.948 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01188/1.975, allocations: 3.868 MB / 1.466 GB, free: 11.55 MB / 0.948 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.005489/1.981, allocations: 2.039 MB / 1.468 GB, free: 11.48 MB / 0.948 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0009223/1.981, allocations: 0.6873 MB / 1.469 GB, free: 10.82 MB / 0.948 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.006125/1.988, allocations: 2.309 MB / 1.471 GB, free: 10.44 MB / 0.948 GB Notification: Performance of pre-optimization done (n=251): time 3.968e-06/1.988, allocations: 0 / 1.471 GB, free: 10.44 MB / 0.948 GB Notification: Performance of matching and sorting (n=251): time 0.01686/2.004, allocations: 5.793 MB / 1.477 GB, free: 9.086 MB / 0.948 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.919e-05/2.005, allocations: 103.3 kB / 1.477 GB, free: 8.988 MB / 0.948 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004975/2.01, allocations: 3.649 MB / 1.48 GB, free: 8.066 MB / 0.948 GB Notification: Performance of collectPreVariables (initialization): time 0.0007589/2.01, allocations: 90.33 kB / 1.48 GB, free: 8.035 MB / 0.948 GB Notification: Performance of collectInitialEqns (initialization): time 0.001466/2.012, allocations: 1.838 MB / 1.482 GB, free: 7.336 MB / 0.948 GB Notification: Performance of collectInitialBindings (initialization): time 0.0009474/2.013, allocations: 0.8382 MB / 1.483 GB, free: 6.715 MB / 0.948 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001096/2.014, allocations: 0.7061 MB / 1.484 GB, free: 6.559 MB / 0.948 GB Notification: Performance of setup shared object (initialization): time 8.677e-05/2.014, allocations: 303.8 kB / 1.484 GB, free: 6.262 MB / 0.948 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005453/2.019, allocations: 1.942 MB / 1.486 GB, free: 5.848 MB / 0.948 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.006643/2.026, allocations: 2.729 MB / 1.489 GB, free: 4.625 MB / 0.948 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01119/2.037, allocations: 4.139 MB / 1.493 GB, free: 3.484 MB / 0.948 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.916e-05/2.037, allocations: 3.531 kB / 1.493 GB, free: 3.484 MB / 0.948 GB Notification: Performance of matching and sorting (n=404) (initialization): time 0.01575/2.053, allocations: 5.062 MB / 1.498 GB, free: 472 kB / 0.948 GB Notification: Performance of prepare postOptimizeDAE: time 8.86e-05/2.053, allocations: 41.33 kB / 1.498 GB, free: 428 kB / 0.948 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.57e-05/2.053, allocations: 15.98 kB / 1.498 GB, free: 412 kB / 0.948 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.806e-05/2.053, allocations: 24 kB / 1.498 GB, free: 388 kB / 0.948 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007216/2.061, allocations: 1.198 MB / 1.499 GB, free: 15.27 MB / 0.9636 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003609/2.064, allocations: 5.966 MB / 1.505 GB, free: 9.184 MB / 0.9636 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007029/2.071, allocations: 0.8006 MB / 1.505 GB, free: 8.438 MB / 0.9636 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001061/2.072, allocations: 161.2 kB / 1.506 GB, free: 8.309 MB / 0.9636 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.008842/2.081, allocations: 2.61 MB / 1.508 GB, free: 6.543 MB / 0.9636 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.007708/2.089, allocations: 2.711 MB / 1.511 GB, free: 4.16 MB / 0.9636 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.01348/2.103, allocations: 4.093 MB / 1.515 GB, free: 1.039 MB / 0.9636 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 8.602e-05/2.103, allocations: 4 kB / 1.515 GB, free: 1.035 MB / 0.9636 GB Notification: Performance of matching and sorting (n=404) (initialization_lambda0): time 0.01973/2.122, allocations: 5.033 MB / 1.52 GB, free: 13.23 MB / 0.9792 GB Notification: Performance of prepare postOptimizeDAE: time 5.998e-05/2.123, allocations: 37.7 kB / 1.52 GB, free: 13.18 MB / 0.9792 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.901e-05/2.123, allocations: 12 kB / 1.52 GB, free: 13.17 MB / 0.9792 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.551e-05/2.123, allocations: 31.97 kB / 1.52 GB, free: 13.14 MB / 0.9792 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005714/2.128, allocations: 1.049 MB / 1.521 GB, free: 12.16 MB / 0.9792 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0001001/2.128, allocations: 39.22 kB / 1.521 GB, free: 12.13 MB / 0.9792 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007476/2.136, allocations: 0.7225 MB / 1.522 GB, free: 11.47 MB / 0.9792 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0009567/2.137, allocations: 157.3 kB / 1.522 GB, free: 11.34 MB / 0.9792 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 52 * Number of states: 0 () * Number of discrete variables: 15 (hexCroUnm.flowRegime,hexCroUnm.flowRegime_nominal,hexCroC1Unm.flowRegime_nominal,hexCroC1Mix.flowRegime_nominal,hexCou.flowRegime_nominal,hexPar.flowRegime_nominal,trapezoid.count,$PRE.trapezoid.count,trapezoid.T_start,$PRE.trapezoid.T_start,hexCroC1Unm.flowRegime,hexCroC1Mix.flowRegime,hexCou.flowRegime,hexPar.flowRegime,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (403): * Single equations (assignments): 392 * 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 0.001708/2.139, allocations: 372.8 kB / 1.522 GB, free: 11.1 MB / 0.9792 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002228/2.141, allocations: 440.4 kB / 1.522 GB, free: 10.67 MB / 0.9792 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01622/2.157, allocations: 4.657 MB / 1.527 GB, free: 7.254 MB / 0.9792 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.81e-05/2.157, allocations: 31.98 kB / 1.527 GB, free: 7.223 MB / 0.9792 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.859e-05/2.157, allocations: 0 / 1.527 GB, free: 7.223 MB / 0.9792 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.489e-05/2.157, allocations: 11.95 kB / 1.527 GB, free: 7.211 MB / 0.9792 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02575/2.183, allocations: 9.058 MB / 1.536 GB, free: 0.7656 MB / 0.9792 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.37e-05/2.183, allocations: 10.19 kB / 1.536 GB, free: 0.7578 MB / 0.9792 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.004787/2.188, allocations: 0.846 MB / 1.537 GB, free: 15.98 MB / 0.9948 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.103e-05/2.188, allocations: 16 kB / 1.537 GB, free: 15.96 MB / 0.9948 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0004623/2.188, allocations: 84.61 kB / 1.537 GB, free: 15.91 MB / 0.9948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003057/2.192, allocations: 5.931 MB / 1.543 GB, free: 9.859 MB / 0.9948 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.755e-06/2.192, allocations: 8 kB / 1.543 GB, free: 9.852 MB / 0.9948 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02321/2.215, allocations: 8.275 MB / 1.551 GB, free: 1.477 MB / 0.9948 GB Notification: Performance of postOpt removeConstants (simulation): time 0.003875/2.219, allocations: 0.971 MB / 1.552 GB, free: 492 kB / 0.9948 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001449/2.22, allocations: 52.94 kB / 1.552 GB, free: 440 kB / 0.9948 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00571/2.226, allocations: 0.5383 MB / 1.552 GB, free: 15.89 MB / 1.01 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0006329/2.227, allocations: 202.7 kB / 1.552 GB, free: 15.7 MB / 1.01 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0005902/2.227, allocations: 127.9 kB / 1.553 GB, free: 15.57 MB / 1.01 GB Notification: Performance of sorting global known variables: time 0.004625/2.232, allocations: 2.404 MB / 1.555 GB, free: 13.17 MB / 1.01 GB Notification: Performance of sort global known variables: time 2.01e-07/2.232, allocations: 0 / 1.555 GB, free: 13.17 MB / 1.01 GB Notification: Performance of remove unused functions: time 0.008825/2.241, allocations: 2.328 MB / 1.557 GB, free: 10.84 MB / 1.01 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 20 * Number of states: 0 () * Number of discrete variables: 7 ($whenCondition1,hexPar.flowRegime,hexCou.flowRegime,hexCroC1Mix.flowRegime,hexCroC1Unm.flowRegime,trapezoid.T_start,trapezoid.count) * Number of discrete states: 1 (trapezoid.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (283): * Single equations (assignments): 269 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * 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 0.002091/2.243, allocations: 0.7028 MB / 1.558 GB, free: 10.21 MB / 1.01 GB Notification: Performance of simCode: created initialization part: time 0.02299/2.266, allocations: 7.318 MB / 1.565 GB, free: 2.98 MB / 1.01 GB Notification: Performance of simCode: created event and clocks part: time 1.148e-05/2.266, allocations: 1.781 kB / 1.565 GB, free: 2.98 MB / 1.01 GB Notification: Performance of simCode: created simulation system equations: time 0.007259/2.273, allocations: 2.32 MB / 1.567 GB, free: 0.7227 MB / 1.01 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01374/2.287, allocations: 2.022 MB / 1.569 GB, free: 14.7 MB / 1.026 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02287/2.31, allocations: 11.08 MB / 1.58 GB, free: 3.531 MB / 1.026 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00302/2.313, allocations: 2.464 MB / 1.583 GB, free: 1.031 MB / 1.026 GB Notification: Performance of simCode: alias equations: time 0.007002/2.32, allocations: 1.244 MB / 1.584 GB, free: 15.79 MB / 1.042 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001388/2.321, allocations: 371.2 kB / 1.584 GB, free: 15.43 MB / 1.042 GB Notification: Performance of SimCode: time 7.41e-07/2.321, allocations: 0 / 1.584 GB, free: 15.43 MB / 1.042 GB Notification: Performance of Templates: time 0.1399/2.461, allocations: 86.41 MB / 1.668 GB, free: 9.895 MB / 1.12 GB make -j1 -f Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.makefile (rm -f Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe ; mkfifo Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe >> ../files/Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.sim & ./Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe 2>&1)