Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false) 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) 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 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(Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang") translateModel(Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001375/0.001375, allocations: 107.2 kB / 16.35 MB, free: 5.879 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001582/0.001582, allocations: 192.3 kB / 17.29 MB, free: 5.516 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.282/1.282, allocations: 205.1 MB / 223.2 MB, free: 12.26 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.757/1.757, allocations: 292.3 MB / 0.5496 GB, free: 17.53 MB / 462.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001408/0.001408, allocations: 71.03 kB / 0.6729 GB, free: 5.82 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1876/0.189, allocations: 114.5 MB / 0.7848 GB, free: 3.156 MB / 0.6544 GB Notification: Performance of NFInst.instantiate(Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang): time 0.3527/0.5418, allocations: 4.791 MB / 0.7895 GB, free: 46.38 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.146/0.6878, allocations: 151.2 MB / 0.9371 GB, free: 14.06 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0008386/0.6887, allocations: 20.59 kB / 0.9371 GB, free: 14.04 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.0006106/0.6894, allocations: 186.2 kB / 0.9373 GB, free: 13.86 MB / 0.7325 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Utilities/Strings.mo:216:3-259:11:writable] Warning: Pure function 'Modelica.Utilities.Strings.find' contains a call to impure function 'Modelica.Utilities.Strings.length'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getHeaderElementTMY3.mo:2:1-105:25:writable] Warning: Pure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3' contains a call to impure function 'Modelica.Utilities.Streams.readLine'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getLongitudeTMY3.mo:2:1-48:21:writable] Warning: Pure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getLongitudeTMY3' contains a call to impure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getLatitudeTMY3.mo:2:1-48:20:writable] Warning: Pure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getLatitudeTMY3' contains a call to impure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getTimeZoneTMY3.mo:2:1-47:20:writable] Warning: Pure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getTimeZoneTMY3' contains a call to impure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Utilities/Strings.mo:139:3-175:14:writable] Warning: Pure function 'Modelica.Utilities.Strings.isEmpty' contains a call to impure function 'Modelica.Utilities.Strings.Advanced.skipWhiteSpace'. Notification: Performance of NFTyping.typeBindings: time 0.001632/0.691, allocations: 495.4 kB / 0.9378 GB, free: 13.38 MB / 0.7325 GB Notification: Performance of NFTyping.typeClassSections: time 0.002078/0.6931, allocations: 0.9286 MB / 0.9387 GB, free: 12.45 MB / 0.7325 GB Notification: Performance of NFFlatten.flatten: time 0.001643/0.6948, allocations: 1.61 MB / 0.9402 GB, free: 10.84 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001026/0.6958, allocations: 0.8357 MB / 0.941 GB, free: 9.977 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0007888/0.6966, allocations: 0.619 MB / 0.9417 GB, free: 9.355 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0007787/0.6974, allocations: 0.673 MB / 0.9423 GB, free: 8.68 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0002232/0.6976, allocations: 152 kB / 0.9425 GB, free: 8.531 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001205/0.6988, allocations: 0.5699 MB / 0.943 GB, free: 7.961 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.0003604/0.6992, allocations: 398.8 kB / 0.9434 GB, free: 7.57 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.0006044/0.6998, allocations: 0.6879 MB / 0.9441 GB, free: 6.879 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.002204/0.702, allocations: 1.987 MB / 0.946 GB, free: 4.891 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 3.707e-06/0.702, allocations: 0 / 0.946 GB, free: 4.891 MB / 0.7325 GB Notification: Performance of FrontEnd: time 1.513e-06/0.7021, allocations: 0 / 0.946 GB, free: 4.891 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 1.522e-05/0.7021, allocations: 4 kB / 0.946 GB, free: 4.887 MB / 0.7325 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 289 * Number of variables: 289 Notification: Performance of Generate backend data structure: time 0.002993/0.7051, allocations: 1.671 MB / 0.9476 GB, free: 3.164 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 3.296e-05/0.7051, allocations: 12.03 kB / 0.9477 GB, free: 3.152 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.1077/0.8128, allocations: 15.36 MB / 0.9626 GB, free: 3.77 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002552/0.8154, allocations: 1.149 MB / 0.9638 GB, free: 2.578 MB / 0.7481 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001137/0.8155, allocations: 90.27 kB / 0.9639 GB, free: 2.488 MB / 0.7481 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004487/0.816, allocations: 112 kB / 0.964 GB, free: 2.379 MB / 0.7481 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03384/0.8498, allocations: 7.573 MB / 0.9714 GB, free: 10.73 MB / 0.7637 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.754e-05/0.8499, allocations: 0 / 0.9714 GB, free: 10.73 MB / 0.7637 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003133/0.8502, allocations: 48 kB / 0.9714 GB, free: 10.68 MB / 0.7637 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.537e-05/0.8503, allocations: 28 kB / 0.9714 GB, free: 10.66 MB / 0.7637 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.06441/0.9147, allocations: 13.49 MB / 0.9846 GB, free: 13.14 MB / 0.7794 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03801/0.9527, allocations: 8.807 MB / 0.9932 GB, free: 4.254 MB / 0.7794 GB Notification: Performance of preOpt comSubExp (simulation): time 0.03801/0.9908, allocations: 7.792 MB / 1.001 GB, free: 12.44 MB / 0.795 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.03091/1.022, allocations: 6.159 MB / 1.007 GB, free: 6.273 MB / 0.795 GB Notification: Performance of preOpt evalFunc (simulation): time 0.000544/1.022, allocations: 0.6003 MB / 1.007 GB, free: 5.543 MB / 0.795 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.03162/1.054, allocations: 6.66 MB / 1.014 GB, free: 14.86 MB / 0.8106 GB Notification: Performance of pre-optimization done (n=101): time 4.408e-06/1.054, allocations: 0 / 1.014 GB, free: 14.86 MB / 0.8106 GB Notification: Performance of matching and sorting (n=101): time 0.09438/1.148, allocations: 18.02 MB / 1.032 GB, free: 12.79 MB / 0.8262 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.000116/1.149, allocations: 192.9 kB / 1.032 GB, free: 12.56 MB / 0.8262 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001051/1.15, allocations: 0.6958 MB / 1.032 GB, free: 11.85 MB / 0.8262 GB Notification: Performance of collectPreVariables (initialization): time 0.0005477/1.15, allocations: 49.7 kB / 1.032 GB, free: 11.8 MB / 0.8262 GB Notification: Performance of collectInitialEqns (initialization): time 0.000378/1.151, allocations: 468.3 kB / 1.033 GB, free: 11.33 MB / 0.8262 GB Notification: Performance of collectInitialBindings (initialization): time 0.0005058/1.151, allocations: 335.2 kB / 1.033 GB, free: 11 MB / 0.8262 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0009333/1.152, allocations: 350.1 kB / 1.034 GB, free: 10.65 MB / 0.8262 GB Notification: Performance of setup shared object (initialization): time 0.0001869/1.152, allocations: 394.7 kB / 1.034 GB, free: 10.26 MB / 0.8262 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.03148/1.184, allocations: 6.275 MB / 1.04 GB, free: 3.973 MB / 0.8262 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0317/1.215, allocations: 6.399 MB / 1.046 GB, free: 13.54 MB / 0.8419 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.05865/1.274, allocations: 10.84 MB / 1.057 GB, free: 2.68 MB / 0.8419 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.408e-06/1.274, allocations: 7.875 kB / 1.057 GB, free: 2.672 MB / 0.8419 GB Notification: Performance of matching and sorting (n=125) (initialization): time 0.06254/1.337, allocations: 12.14 MB / 1.069 GB, free: 6.5 MB / 0.8575 GB Notification: Performance of prepare postOptimizeDAE: time 2.564e-05/1.337, allocations: 4 kB / 1.069 GB, free: 6.496 MB / 0.8575 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.349e-05/1.337, allocations: 8.094 kB / 1.069 GB, free: 6.488 MB / 0.8575 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005866/1.337, allocations: 76.78 kB / 1.069 GB, free: 6.41 MB / 0.8575 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01769/1.355, allocations: 2.658 MB / 1.071 GB, free: 3.75 MB / 0.8575 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003008/1.358, allocations: 1.642 MB / 1.073 GB, free: 1.969 MB / 0.8575 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01743/1.376, allocations: 2.433 MB / 1.075 GB, free: 15.53 MB / 0.8731 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004888/1.376, allocations: 107.8 kB / 1.075 GB, free: 15.43 MB / 0.8731 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 4 * Number of states: 0 () * Number of discrete variables: 8 (weaDat.conTim.canRepeatWeatherFile,weaDat.conTimMin.canRepeatWeatherFile,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (123): * Single equations (assignments): 122 * 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 {(1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.001019/1.377, allocations: 293.5 kB / 1.076 GB, free: 15.13 MB / 0.8731 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004768/1.378, allocations: 98.81 kB / 1.076 GB, free: 15.03 MB / 0.8731 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.06433/1.442, allocations: 12.52 MB / 1.088 GB, free: 2.484 MB / 0.8731 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.697e-05/1.442, allocations: 14.31 kB / 1.088 GB, free: 2.473 MB / 0.8731 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.568e-06/1.442, allocations: 4 kB / 1.088 GB, free: 2.469 MB / 0.8731 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.788e-05/1.442, allocations: 9.375 kB / 1.088 GB, free: 2.461 MB / 0.8731 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.06652/1.509, allocations: 14.59 MB / 1.102 GB, free: 3.789 MB / 0.8887 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.121e-05/1.509, allocations: 3.938 kB / 1.102 GB, free: 3.785 MB / 0.8887 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.01725/1.526, allocations: 2.648 MB / 1.105 GB, free: 1.133 MB / 0.8887 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004746/1.526, allocations: 76.78 kB / 1.105 GB, free: 1.055 MB / 0.8887 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0004291/1.527, allocations: 83.83 kB / 1.105 GB, free: 0.9727 MB / 0.8887 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001846/1.529, allocations: 1.649 MB / 1.107 GB, free: 15.18 MB / 0.9044 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.192e-06/1.529, allocations: 0 / 1.107 GB, free: 15.18 MB / 0.9044 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.06141/1.59, allocations: 12.02 MB / 1.118 GB, free: 3.125 MB / 0.9044 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0017/1.592, allocations: 0.6473 MB / 1.119 GB, free: 2.457 MB / 0.9044 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003803/1.592, allocations: 24 kB / 1.119 GB, free: 2.434 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0165/1.609, allocations: 2.391 MB / 1.121 GB, free: 40 kB / 0.9044 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002441/1.609, allocations: 84.89 kB / 1.122 GB, free: 15.96 MB / 0.92 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0003235/1.609, allocations: 95.81 kB / 1.122 GB, free: 15.86 MB / 0.92 GB Notification: Performance of sorting global known variables: time 0.0006539/1.61, allocations: 0.4951 MB / 1.122 GB, free: 15.38 MB / 0.92 GB Notification: Performance of sort global known variables: time 1.463e-06/1.61, allocations: 4.75 kB / 1.122 GB, free: 15.37 MB / 0.92 GB Notification: Performance of remove unused functions: time 0.001772/1.612, allocations: 0.6513 MB / 1.123 GB, free: 14.72 MB / 0.92 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 4 ($whenCondition2,$whenCondition1,weaDat.conTimMin.tNext,weaDat.conTim.tNext) * Number of discrete states: 2 (weaDat.conTim.tNext,weaDat.conTimMin.tNext) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (121): * Single equations (assignments): 118 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * 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 0.001591/1.613, allocations: 0.6132 MB / 1.123 GB, free: 14.35 MB / 0.92 GB Notification: Performance of simCode: created initialization part: time 0.06174/1.675, allocations: 12.79 MB / 1.136 GB, free: 1.52 MB / 0.92 GB Notification: Performance of simCode: created event and clocks part: time 8.465e-06/1.675, allocations: 4 kB / 1.136 GB, free: 1.516 MB / 0.92 GB Notification: Performance of simCode: created simulation system equations: time 0.3507/2.026, allocations: 6.439 MB / 1.142 GB, free: 311.5 MB / 0.92 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002714/2.029, allocations: 300.6 kB / 1.142 GB, free: 311.5 MB / 0.92 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.05533/2.084, allocations: 7.895 MB / 1.15 GB, free: 310.7 MB / 0.92 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008954/2.085, allocations: 1.114 MB / 1.151 GB, free: 310 MB / 0.92 GB Notification: Performance of simCode: alias equations: time 0.005248/2.09, allocations: 0.7158 MB / 1.152 GB, free: 309.9 MB / 0.92 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.002522/2.093, allocations: 245.7 kB / 1.152 GB, free: 309.9 MB / 0.92 GB Notification: Performance of SimCode: time 3.086e-06/2.093, allocations: 0 / 1.152 GB, free: 309.9 MB / 0.92 GB Notification: Performance of Templates: time 0.08906/2.182, allocations: 36.32 MB / 1.188 GB, free: 297.6 MB / 0.92 GB make -j1 -f Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.makefile (rm -f Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.pipe ; mkfifo Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.pipe ; head -c 1048576 < Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.pipe >> ../files/Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.sim & ./Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang -abortSlowSimulation -alarm=480 -s gbode -lv LOG_STATS > Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.pipe 2>&1)