Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation.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.AbsorbedRadiation,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation") translateModel(Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001355/0.001356, allocations: 99.23 kB / 16.29 MB, free: 5.988 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001465/0.001466, allocations: 179.2 kB / 17.22 MB, free: 5.613 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.39/1.39, allocations: 205.1 MB / 223.1 MB, free: 12.31 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 1.812/1.812, allocations: 292.3 MB / 0.5495 GB, free: 17.57 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 0.001463/0.001463, allocations: 71.91 kB / 0.6722 GB, free: 6.562 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2487/0.2502, allocations: 114.6 MB / 0.7841 GB, free: 3.887 MB / 0.6544 GB Notification: Performance of NFInst.instantiate(Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation): time 0.4062/0.6564, allocations: 5.48 MB / 0.7894 GB, free: 46 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.1892/0.8456, allocations: 155.1 MB / 0.9409 GB, free: 10 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.00173/0.8474, allocations: 27.88 kB / 0.9409 GB, free: 9.973 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.005489/0.8529, allocations: 1.758 MB / 0.9426 GB, free: 8.211 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 0.002762/0.8557, allocations: 0.6775 MB / 0.9433 GB, free: 7.535 MB / 0.7325 GB Notification: Performance of NFTyping.typeClassSections: time 0.003059/0.8588, allocations: 0.9429 MB / 0.9442 GB, free: 6.602 MB / 0.7325 GB Notification: Performance of NFFlatten.flatten: time 0.004275/0.8631, allocations: 3.286 MB / 0.9474 GB, free: 3.312 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001716/0.8648, allocations: 0.9308 MB / 0.9483 GB, free: 2.355 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002073/0.8669, allocations: 1.087 MB / 0.9494 GB, free: 1.266 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001929/0.8689, allocations: 0.9611 MB / 0.9503 GB, free: 308 kB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0006483/0.8695, allocations: 180 kB / 0.9505 GB, free: 128 kB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00442/0.874, allocations: 2.142 MB / 0.9526 GB, free: 13.98 MB / 0.7481 GB Notification: Performance of NFScalarize.scalarize: time 0.001414/0.8754, allocations: 1.322 MB / 0.9539 GB, free: 12.66 MB / 0.7481 GB Notification: Performance of NFVerifyModel.verify: time 0.001098/0.8765, allocations: 0.9131 MB / 0.9548 GB, free: 11.74 MB / 0.7481 GB Notification: Performance of NFConvertDAE.convert: time 0.005754/0.8823, allocations: 3.693 MB / 0.9584 GB, free: 8.035 MB / 0.7481 GB Notification: Performance of FrontEnd - DAE generated: time 6.331e-06/0.8823, allocations: 4 kB / 0.9584 GB, free: 8.031 MB / 0.7481 GB Notification: Performance of FrontEnd: time 1.834e-06/0.8823, allocations: 0 / 0.9584 GB, free: 8.031 MB / 0.7481 GB Notification: Performance of Transformations before backend: time 3.937e-05/0.8824, allocations: 4 kB / 0.9584 GB, free: 8.027 MB / 0.7481 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 296 * Number of variables: 296 Notification: Performance of Generate backend data structure: time 0.004241/0.8866, allocations: 2.427 MB / 0.9608 GB, free: 5.535 MB / 0.7481 GB Notification: Performance of prepare preOptimizeDAE: time 4.477e-05/0.8867, allocations: 8.031 kB / 0.9608 GB, free: 5.527 MB / 0.7481 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008259/0.8875, allocations: 257.9 kB / 0.961 GB, free: 5.273 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003536/0.8911, allocations: 2.937 MB / 0.9639 GB, free: 2.281 MB / 0.7481 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.494e-05/0.8912, allocations: 106.9 kB / 0.964 GB, free: 2.176 MB / 0.7481 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001937/0.8914, allocations: 144 kB / 0.9641 GB, free: 2.035 MB / 0.7481 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002288/0.8936, allocations: 1.429 MB / 0.9655 GB, free: 0.543 MB / 0.7481 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.022e-05/0.8937, allocations: 7.984 kB / 0.9655 GB, free: 0.5352 MB / 0.7481 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001052/0.8938, allocations: 48 kB / 0.9656 GB, free: 500 kB / 0.7481 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.327e-05/0.8938, allocations: 28 kB / 0.9656 GB, free: 472 kB / 0.7481 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002364/0.8962, allocations: 1.531 MB / 0.9671 GB, free: 14.93 MB / 0.7637 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.007458/0.9037, allocations: 4.967 MB / 0.9719 GB, free: 9.875 MB / 0.7637 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00196/0.9057, allocations: 1.312 MB / 0.9732 GB, free: 8.551 MB / 0.7637 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001089/0.9068, allocations: 0.8508 MB / 0.9741 GB, free: 7.699 MB / 0.7637 GB Notification: Performance of preOpt evalFunc (simulation): time 8.809e-05/0.9069, allocations: 36.75 kB / 0.9741 GB, free: 7.664 MB / 0.7637 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00128/0.9082, allocations: 0.8468 MB / 0.9749 GB, free: 6.805 MB / 0.7637 GB Notification: Performance of pre-optimization done (n=92): time 2.996e-06/0.9082, allocations: 3.938 kB / 0.9749 GB, free: 6.801 MB / 0.7637 GB Notification: Performance of matching and sorting (n=92): time 0.004133/0.9123, allocations: 2.499 MB / 0.9774 GB, free: 4.293 MB / 0.7637 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0002213/0.9126, allocations: 326.2 kB / 0.9777 GB, free: 3.922 MB / 0.7637 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005245/0.9178, allocations: 4.307 MB / 0.9819 GB, free: 15.6 MB / 0.7794 GB Notification: Performance of collectPreVariables (initialization): time 0.0002546/0.9181, allocations: 61.7 kB / 0.9819 GB, free: 15.53 MB / 0.7794 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006211/0.9187, allocations: 0.6495 MB / 0.9826 GB, free: 14.87 MB / 0.7794 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003055/0.919, allocations: 319.5 kB / 0.9829 GB, free: 14.55 MB / 0.7794 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.00106/0.9201, allocations: 1.051 MB / 0.9839 GB, free: 13.49 MB / 0.7794 GB Notification: Performance of setup shared object (initialization): time 0.0001346/0.9202, allocations: 309.1 kB / 0.9842 GB, free: 13.19 MB / 0.7794 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.007058/0.9273, allocations: 6.992 MB / 0.991 GB, free: 6.195 MB / 0.7794 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.007291/0.9346, allocations: 7.257 MB / 0.9981 GB, free: 14.92 MB / 0.795 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.009755/0.9444, allocations: 8.914 MB / 1.007 GB, free: 5.965 MB / 0.795 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.053e-05/0.9445, allocations: 4 kB / 1.007 GB, free: 5.961 MB / 0.795 GB Notification: Performance of matching and sorting (n=435) (initialization): time 0.01859/0.9631, allocations: 15.74 MB / 1.022 GB, free: 6.164 MB / 0.8106 GB Notification: Performance of prepare postOptimizeDAE: time 0.0002334/0.9634, allocations: 153.5 kB / 1.022 GB, free: 6.008 MB / 0.8106 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.658e-05/0.9634, allocations: 4.062 kB / 1.022 GB, free: 6.004 MB / 0.8106 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.092e-05/0.9635, allocations: 11.94 kB / 1.022 GB, free: 5.992 MB / 0.8106 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001375/0.9648, allocations: 305.5 kB / 1.023 GB, free: 5.695 MB / 0.8106 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.961e-05/0.9649, allocations: 8 kB / 1.023 GB, free: 5.688 MB / 0.8106 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001273/0.9662, allocations: 174.2 kB / 1.023 GB, free: 5.516 MB / 0.8106 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002263/0.9664, allocations: 68.72 kB / 1.023 GB, free: 5.449 MB / 0.8106 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 3 * 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 (189): * Single equations (assignments): 176 * Array equations: 12 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.001357/0.9678, allocations: 0.8232 MB / 1.024 GB, free: 4.609 MB / 0.8106 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000391/0.9682, allocations: 142.1 kB / 1.024 GB, free: 4.469 MB / 0.8106 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00359/0.9717, allocations: 2.18 MB / 1.026 GB, free: 2.27 MB / 0.8106 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.396e-05/0.9718, allocations: 11.94 kB / 1.026 GB, free: 2.258 MB / 0.8106 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.966e-06/0.9718, allocations: 4 kB / 1.026 GB, free: 2.254 MB / 0.8106 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.188e-05/0.9718, allocations: 3.984 kB / 1.026 GB, free: 2.25 MB / 0.8106 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005513/0.9773, allocations: 3.602 MB / 1.029 GB, free: 14.58 MB / 0.8262 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.682e-06/0.9774, allocations: 7.938 kB / 1.029 GB, free: 14.57 MB / 0.8262 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006422/0.978, allocations: 147.8 kB / 1.03 GB, free: 14.43 MB / 0.8262 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.187e-05/0.978, allocations: 6.125 kB / 1.03 GB, free: 14.42 MB / 0.8262 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.672e-05/0.9781, allocations: 27.98 kB / 1.03 GB, free: 14.39 MB / 0.8262 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 7.324e-06/0.9781, allocations: 4 kB / 1.03 GB, free: 14.39 MB / 0.8262 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.623e-06/0.9781, allocations: 0 / 1.03 GB, free: 14.39 MB / 0.8262 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003322/0.9815, allocations: 2.174 MB / 1.032 GB, free: 12.19 MB / 0.8262 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006207/0.9821, allocations: 374.9 kB / 1.032 GB, free: 11.8 MB / 0.8262 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001951/0.9823, allocations: 27.91 kB / 1.032 GB, free: 11.78 MB / 0.8262 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006672/0.983, allocations: 55.94 kB / 1.032 GB, free: 11.72 MB / 0.8262 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001713/0.9832, allocations: 67.16 kB / 1.032 GB, free: 11.66 MB / 0.8262 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.605e-05/0.9833, allocations: 47.97 kB / 1.032 GB, free: 11.61 MB / 0.8262 GB Notification: Performance of sorting global known variables: time 0.002819/0.9861, allocations: 2.75 MB / 1.035 GB, free: 8.863 MB / 0.8262 GB Notification: Performance of sort global known variables: time 1.9e-07/0.9861, allocations: 0 / 1.035 GB, free: 8.863 MB / 0.8262 GB Notification: Performance of remove unused functions: time 0.002418/0.9885, allocations: 1.01 MB / 1.036 GB, free: 7.852 MB / 0.8262 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 (90): * Single equations (assignments): 87 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.002353/0.9909, allocations: 0.9122 MB / 1.037 GB, free: 7.168 MB / 0.8262 GB Notification: Performance of simCode: created initialization part: time 0.01032/1.001, allocations: 10.58 MB / 1.047 GB, free: 12.57 MB / 0.8419 GB Notification: Performance of simCode: created event and clocks part: time 1.125e-05/1.001, allocations: 128 / 1.047 GB, free: 12.57 MB / 0.8419 GB Notification: Performance of simCode: created simulation system equations: time 0.002007/1.003, allocations: 1.465 MB / 1.049 GB, free: 11.09 MB / 0.8419 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002011/1.005, allocations: 322 kB / 1.049 GB, free: 10.8 MB / 0.8419 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009617/1.015, allocations: 5.398 MB / 1.054 GB, free: 5.375 MB / 0.8419 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001885/1.017, allocations: 1.739 MB / 1.056 GB, free: 3.602 MB / 0.8419 GB Notification: Performance of simCode: alias equations: time 0.001268/1.018, allocations: 377.1 kB / 1.056 GB, free: 3.254 MB / 0.8419 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003496/1.019, allocations: 131.4 kB / 1.056 GB, free: 3.125 MB / 0.8419 GB Notification: Performance of SimCode: time 9.42e-07/1.019, allocations: 0 / 1.056 GB, free: 3.125 MB / 0.8419 GB Notification: Performance of Templates: time 0.06157/1.08, allocations: 29.82 MB / 1.086 GB, free: 5.512 MB / 0.8731 GB make -j1 -f Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation.makefile (rm -f Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation.pipe ; mkfifo Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation.pipe ; head -c 1048576 < Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation.pipe >> ../files/Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation.sim & ./Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation -abortSlowSimulation -alarm=480 -s cvode -lv LOG_STATS > Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.AbsorbedRadiation.pipe 2>&1)