Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.WindowRadiationElectrochromic.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: "" <> buildModelFMU(Buildings.HeatTransfer.Windows.BaseClasses.Examples.WindowRadiationElectrochromic,fileNamePrefix="Buildings_8_Buildings_HeatTransfer_Windows_BaseClasses_Examples_WindowRadiationElectrochromic",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.HeatTransfer.Windows.BaseClasses.Examples.WindowRadiationElectrochromic,fileNamePrefix="Buildings_8_Buildings_HeatTransfer_Windows_BaseClasses_Examples_WindowRadiationElectrochromic",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 0.001459/0.001459, allocations: 111.3 kB / 15.23 MB, free: 0.6602 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001691/0.001691, allocations: 195.9 kB / 16.14 MB, free: 6.664 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.348/1.348, allocations: 205.1 MB / 222 MB, free: 4.73 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.721/1.721, allocations: 292.3 MB / 0.5484 GB, free: 13.68 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 0.00137/0.00137, allocations: 65.34 kB / 0.6709 GB, free: 26.16 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1883/0.1897, allocations: 114.5 MB / 0.7828 GB, free: 13.93 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.HeatTransfer.Windows.BaseClasses.Examples.WindowRadiationElectrochromic): time 0.008345/0.1981, allocations: 7.011 MB / 0.7896 GB, free: 6.879 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.5361/0.7343, allocations: 156.9 MB / 0.9429 GB, free: 4.98 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001431/0.7357, allocations: 31.88 kB / 0.9429 GB, free: 4.98 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.004722/0.7405, allocations: 1.778 MB / 0.9446 GB, free: 4.949 MB / 0.7325 GB [/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‘. Notification: Performance of NFTyping.typeBindings: time 0.002205/0.7427, allocations: 0.972 MB / 0.9456 GB, free: 4.918 MB / 0.7325 GB Notification: Performance of NFTyping.typeClassSections: time 0.002536/0.7452, allocations: 1.182 MB / 0.9467 GB, free: 4.883 MB / 0.7325 GB Notification: Performance of NFFlatten.flatten: time 0.003959/0.7492, allocations: 5.039 MB / 0.9517 GB, free: 4.574 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001476/0.7507, allocations: 1.222 MB / 0.9529 GB, free: 4.301 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002244/0.7529, allocations: 1.374 MB / 0.9542 GB, free: 4.203 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001708/0.7547, allocations: 1.419 MB / 0.9556 GB, free: 4.168 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0003053/0.755, allocations: 127.5 kB / 0.9557 GB, free: 4.168 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003647/0.7586, allocations: 2.19 MB / 0.9578 GB, free: 4.086 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.003116/0.7618, allocations: 4.605 MB / 0.9623 GB, free: 3.961 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.004461/0.7662, allocations: 4.034 MB / 0.9663 GB, free: 2.664 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.01393/0.7802, allocations: 17.19 MB / 0.9831 GB, free: 13.95 MB / 0.7481 GB Notification: Performance of FrontEnd - DAE generated: time 4.89e-06/0.7802, allocations: 0 / 0.9831 GB, free: 13.95 MB / 0.7481 GB Notification: Performance of FrontEnd: time 1.383e-06/0.7802, allocations: 0 / 0.9831 GB, free: 13.95 MB / 0.7481 GB Notification: Performance of Transformations before backend: time 0.0002186/0.7804, allocations: 0 / 0.9831 GB, free: 13.95 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: 400 * Number of variables: 400 Notification: Performance of Generate backend data structure: time 0.03018/0.8106, allocations: 13.91 MB / 0.9966 GB, free: 5.367 MB / 0.7481 GB Notification: Performance of prepare preOptimizeDAE: time 4.245e-05/0.8107, allocations: 10.09 kB / 0.9967 GB, free: 5.367 MB / 0.7481 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0003213/0.811, allocations: 234.3 kB / 0.9969 GB, free: 5.184 MB / 0.7481 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00392/0.8149, allocations: 0.9009 MB / 0.9978 GB, free: 4.695 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 1.426/2.241, allocations: 0.9945 GB / 1.992 GB, free: 214.8 MB / 1.045 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.022e-05/2.241, allocations: 166.7 kB / 1.992 GB, free: 214.6 MB / 1.045 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002392/2.241, allocations: 224 kB / 1.993 GB, free: 214.4 MB / 1.045 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00264/2.244, allocations: 2.264 MB / 1.995 GB, free: 212.1 MB / 1.045 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.27e-05/2.244, allocations: 1.531 kB / 1.995 GB, free: 212.1 MB / 1.045 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001263/2.244, allocations: 68 kB / 1.995 GB, free: 212 MB / 1.045 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.749e-05/2.244, allocations: 36 kB / 1.995 GB, free: 212 MB / 1.045 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002602/2.247, allocations: 2.384 MB / 1.997 GB, free: 209.6 MB / 1.045 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.4447/2.691, allocations: 242.3 MB / 2.234 GB, free: 422.2 MB / 1.045 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002456/2.694, allocations: 1.852 MB / 2.236 GB, free: 421.5 MB / 1.045 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.00116/2.695, allocations: 1.241 MB / 2.237 GB, free: 421 MB / 1.045 GB Notification: Performance of preOpt evalFunc (simulation): time 8.464e-05/2.695, allocations: 41.2 kB / 2.237 GB, free: 421 MB / 1.045 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001491/2.697, allocations: 1.262 MB / 2.238 GB, free: 420.6 MB / 1.045 GB Notification: Performance of pre-optimization done (n=126): time 2.395e-06/2.697, allocations: 0 / 2.238 GB, free: 420.6 MB / 1.045 GB Notification: Performance of matching and sorting (n=126): time 0.009975/2.707, allocations: 4.13 MB / 2.242 GB, free: 419.6 MB / 1.045 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001441/2.707, allocations: 363.8 kB / 2.243 GB, free: 419.3 MB / 1.045 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 1.868/4.575, allocations: 1.182 GB / 3.425 GB, free: 123.4 MB / 1.045 GB Notification: Performance of collectPreVariables (initialization): time 0.0004908/4.575, allocations: 83.61 kB / 3.425 GB, free: 123.3 MB / 1.045 GB Notification: Performance of collectInitialEqns (initialization): time 0.004241/4.579, allocations: 3.697 MB / 3.429 GB, free: 119.8 MB / 1.045 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003192/4.58, allocations: 428.4 kB / 3.429 GB, free: 119.6 MB / 1.045 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006939/4.58, allocations: 0.6521 MB / 3.43 GB, free: 119 MB / 1.045 GB Notification: Performance of setup shared object (initialization): time 3.079e-05/4.58, allocations: 306.6 kB / 3.43 GB, free: 118.7 MB / 1.045 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001908/4.582, allocations: 1.885 MB / 3.432 GB, free: 116.8 MB / 1.045 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002151/4.584, allocations: 2.829 MB / 3.435 GB, free: 113.6 MB / 1.045 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003778/4.588, allocations: 4.539 MB / 3.439 GB, free: 108.7 MB / 1.045 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.153e-05/4.588, allocations: 8 kB / 3.439 GB, free: 108.7 MB / 1.045 GB Notification: Performance of matching and sorting (n=360) (initialization): time 0.009881/4.598, allocations: 5.871 MB / 3.445 GB, free: 103 MB / 1.045 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001295/4.598, allocations: 209.6 kB / 3.445 GB, free: 102.8 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.338e-05/4.598, allocations: 32.75 kB / 3.445 GB, free: 102.8 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000591/4.599, allocations: 120.8 kB / 3.445 GB, free: 102.6 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001656/4.601, allocations: 0.5849 MB / 3.446 GB, free: 102.1 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001567/4.602, allocations: 1.567 MB / 3.447 GB, free: 100.4 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005948/4.608, allocations: 1.163 MB / 3.448 GB, free: 99.19 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001983/4.608, allocations: 140 kB / 3.448 GB, free: 99.05 MB / 1.045 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 128 * Number of states: 0 () * Number of discrete variables: 6 (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 (329): * Single equations (assignments): 327 * Array equations: 0 * Algorithm blocks: 1 * 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 0.004049/4.612, allocations: 3.834 MB / 3.452 GB, free: 95.2 MB / 1.045 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.003608/4.616, allocations: 0.7401 MB / 3.453 GB, free: 94.45 MB / 1.045 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005205/4.621, allocations: 4.212 MB / 3.457 GB, free: 90.23 MB / 1.045 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.953e-06/4.621, allocations: 15.94 kB / 3.457 GB, free: 90.21 MB / 1.045 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.906e-06/4.621, allocations: 0 / 3.457 GB, free: 90.21 MB / 1.045 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.766e-06/4.621, allocations: 7.969 kB / 3.457 GB, free: 90.21 MB / 1.045 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01314/4.634, allocations: 12.22 MB / 3.469 GB, free: 77.93 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.408e-06/4.634, allocations: 0 / 3.469 GB, free: 77.93 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000708/4.635, allocations: 203.7 kB / 3.469 GB, free: 77.73 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000471/4.636, allocations: 80.78 kB / 3.469 GB, free: 77.64 MB / 1.045 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.739e-05/4.636, allocations: 39.97 kB / 3.469 GB, free: 77.61 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001331/4.637, allocations: 1.547 MB / 3.471 GB, free: 75.93 MB / 1.045 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.072e-06/4.637, allocations: 6.578 kB / 3.471 GB, free: 75.92 MB / 1.045 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006064/4.643, allocations: 3.799 MB / 3.475 GB, free: 72.09 MB / 1.045 GB Notification: Performance of postOpt removeConstants (simulation): time 0.003682/4.647, allocations: 3.109 MB / 3.478 GB, free: 68.95 MB / 1.045 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001618/4.648, allocations: 28 kB / 3.478 GB, free: 68.92 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00323/4.652, allocations: 0.7532 MB / 3.478 GB, free: 68.17 MB / 1.045 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001754/4.652, allocations: 84.88 kB / 3.478 GB, free: 68.09 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001036/4.652, allocations: 59.97 kB / 3.478 GB, free: 68.03 MB / 1.045 GB Notification: Performance of sorting global known variables: time 1.23/5.882, allocations: 0.9474 GB / 4.426 GB, free: 12 MB / 1.045 GB Notification: Performance of sort global known variables: time 1.513e-06/5.882, allocations: 0 / 4.426 GB, free: 12 MB / 1.045 GB Notification: Performance of remove unused functions: time 0.006956/5.889, allocations: 1.81 MB / 4.428 GB, free: 10.35 MB / 1.045 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.conTimMin.tNext,weaDat.conTim.tNext) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (111): * Single equations (assignments): 107 * Array equations: 0 * Algorithm blocks: 1 * 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 0.007827/5.896, allocations: 5.239 MB / 4.433 GB, free: 5.883 MB / 1.045 GB Notification: Performance of simCode: created initialization part: time 0.2841/6.18, allocations: 5.587 MB / 4.438 GB, free: 433.1 MB / 1.045 GB Notification: Performance of simCode: created event and clocks part: time 5.801e-06/6.181, allocations: 3.641 kB / 4.438 GB, free: 433.1 MB / 1.045 GB Notification: Performance of simCode: created simulation system equations: time 0.002652/6.183, allocations: 2.652 MB / 4.441 GB, free: 432.9 MB / 1.045 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005985/6.189, allocations: 0.7905 MB / 4.442 GB, free: 432.9 MB / 1.045 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 6.963/13.15, allocations: 4.834 GB / 9.275 GB, free: 190.6 MB / 1.045 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003816/13.16, allocations: 4.614 MB / 9.28 GB, free: 185.9 MB / 1.045 GB Notification: Performance of simCode: alias equations: time 0.006266/13.16, allocations: 3.011 MB / 9.283 GB, free: 183.1 MB / 1.045 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.005391/13.17, allocations: 4.064 MB / 9.287 GB, free: 179.1 MB / 1.045 GB Notification: Performance of SimCode: time 6.31e-07/13.17, allocations: 0 / 9.287 GB, free: 179.1 MB / 1.045 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 9.376/22.54, allocations: 0.7033 GB / 9.99 GB, free: 328.3 MB / 1.045 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002005/22.54, allocations: 327 kB / 9.99 GB, free: 327.9 MB / 1.045 GB Notification: Performance of buildModelFMU: Generate platform static: time 6.71/29.25, allocations: 64 / 9.99 GB, free: 327.9 MB / 1.045 GB (rm -f Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.WindowRadiationElectrochromic.pipe ; mkfifo Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.WindowRadiationElectrochromic.pipe ; head -c 1048576 < Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.WindowRadiationElectrochromic.pipe >> ../files/Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.WindowRadiationElectrochromic.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_Buildings_8_Buildings_HeatTransfer_Windows_BaseClasses_Examples_WindowRadiationElectrochromic_fmu --startTime=0 --stopTime=864000 --timeout=50 --tolerance=1e-06 Buildings_8_Buildings_HeatTransfer_Windows_BaseClasses_Examples_WindowRadiationElectrochromic.fmu > Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.WindowRadiationElectrochromic.pipe 2>&1)