Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall.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/Buildings 11.0.0-master/package.mo", uses=false)
Using package Buildings with version 11.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.0-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(Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall,fileNamePrefix="Buildings_latest_Buildings_ThermalZones_Detailed_Constructions_Examples_ExteriorWall",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall,fileNamePrefix="Buildings_latest_Buildings_ThermalZones_Detailed_Constructions_Examples_ExteriorWall",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 0.001569/0.001569, allocations: 111.3 kB / 15.23 MB, free: 0.6406 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001897/0.001897, allocations: 195 kB / 16.14 MB, free: 6.711 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.413/1.413, allocations: 222.9 MB / 239.8 MB, free: 4.531 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.0-master/package.mo): time 2.793/2.793, allocations: 461.8 MB / 0.7342 GB, free: 14.18 MB / 0.5919 GB
Notification: Performance of FrontEnd - loaded program: time 0.001543/0.001543, allocations: 68.78 kB / 0.8985 GB, free: 36.86 MB / 0.7169 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3562/0.3578, allocations: 157.4 MB / 1.052 GB, free: 8.188 MB / 0.8106 GB
Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall): time 0.01196/0.3698, allocations: 9.776 MB / 1.062 GB, free: 14.36 MB / 0.8262 GB
Notification: Performance of NFInst.instExpressions: time 0.173/0.5429, allocations: 152.4 MB / 1.211 GB, free: 5.367 MB / 0.9669 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.002831/0.5458, allocations: 35.81 kB / 1.211 GB, free: 5.332 MB / 0.9669 GB
Notification: Performance of NFTyping.typeComponents: time 0.004311/0.5501, allocations: 1.023 MB / 1.212 GB, free: 4.305 MB / 0.9669 GB
Notification: Performance of NFTyping.typeBindings: time 0.0045/0.5547, allocations: 1.005 MB / 1.213 GB, free: 3.301 MB / 0.9669 GB
Notification: Performance of NFTyping.typeClassSections: time 0.004877/0.5596, allocations: 1.468 MB / 1.214 GB, free: 1.84 MB / 0.9669 GB
Notification: Performance of NFFlatten.flatten: time 0.007264/0.5668, allocations: 4.968 MB / 1.219 GB, free: 12.86 MB / 0.9825 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.003158/0.57, allocations: 1.738 MB / 1.221 GB, free: 11.07 MB / 0.9825 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.00346/0.5735, allocations: 1.752 MB / 1.222 GB, free: 9.312 MB / 0.9825 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002923/0.5764, allocations: 1.599 MB / 1.224 GB, free: 7.707 MB / 0.9825 GB
Notification: Performance of NFPackage.collectConstants: time 0.0009585/0.5774, allocations: 184 kB / 1.224 GB, free: 7.527 MB / 0.9825 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.002833/0.5803, allocations: 0.9444 MB / 1.225 GB, free: 6.582 MB / 0.9825 GB
Notification: Performance of NFScalarize.scalarize: time 0.001176/0.5815, allocations: 0.755 MB / 1.226 GB, free: 5.824 MB / 0.9825 GB
Notification: Performance of NFVerifyModel.verify: time 0.002426/0.5839, allocations: 1.546 MB / 1.227 GB, free: 4.27 MB / 0.9825 GB
Notification: Performance of NFConvertDAE.convert: time 0.005849/0.5897, allocations: 5.29 MB / 1.232 GB, free: 14.96 MB / 0.9981 GB
Notification: Performance of FrontEnd - DAE generated: time 5.971e-06/0.5898, allocations: 0 / 1.232 GB, free: 14.96 MB / 0.9981 GB
Notification: Performance of FrontEnd: time 3.106e-06/0.5898, allocations: 4 kB / 1.232 GB, free: 14.96 MB / 0.9981 GB
Notification: Performance of Transformations before backend: time 0.0001005/0.5899, allocations: 0 / 1.232 GB, free: 14.96 MB / 0.9981 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 502
 * Number of variables: 502
Notification: Performance of Generate backend data structure: time 0.009655/0.5996, allocations: 4.115 MB / 1.236 GB, free: 10.78 MB / 0.9981 GB
Notification: Performance of prepare preOptimizeDAE: time 5.221e-05/0.5996, allocations: 11.97 kB / 1.236 GB, free: 10.77 MB / 0.9981 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0003972/0.6, allocations: 290.9 kB / 1.237 GB, free: 10.48 MB / 0.9981 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.008041/0.6081, allocations: 1.581 MB / 1.238 GB, free: 8.891 MB / 0.9981 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.005498/0.6136, allocations: 2.589 MB / 1.241 GB, free: 6.23 MB / 0.9981 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002246/0.6139, allocations: 193.6 kB / 1.241 GB, free: 6.035 MB / 0.9981 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003992/0.6143, allocations: 208 kB / 1.241 GB, free: 5.832 MB / 0.9981 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.006876/0.6212, allocations: 3.323 MB / 1.244 GB, free: 2.453 MB / 0.9981 GB
Notification: Performance of preOpt findStateOrder (simulation): time 3.305e-05/0.6212, allocations: 0 / 1.244 GB, free: 2.453 MB / 0.9981 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002321/0.6214, allocations: 84 kB / 1.244 GB, free: 2.371 MB / 0.9981 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.209e-05/0.6215, allocations: 48 kB / 1.245 GB, free: 2.324 MB / 0.9981 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.6897/1.311, allocations: 3.957 MB / 1.248 GB, free: 188.3 MB / 0.9981 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 0.02269/1.334, allocations: 10.51 MB / 1.259 GB, free: 185.8 MB / 0.9981 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.00743/1.341, allocations: 2.923 MB / 1.262 GB, free: 185.7 MB / 0.9981 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.003535/1.345, allocations: 1.381 MB / 1.263 GB, free: 185.7 MB / 0.9981 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0007145/1.346, allocations: 495.3 kB / 1.263 GB, free: 185.2 MB / 0.9981 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.004264/1.35, allocations: 1.622 MB / 1.265 GB, free: 185.2 MB / 0.9981 GB
Notification: Performance of pre-optimization done (n=166): time 4.748e-06/1.35, allocations: 0 / 1.265 GB, free: 185.2 MB / 0.9981 GB
Notification: Performance of matching and sorting (n=166): time 0.01426/1.364, allocations: 4.749 MB / 1.27 GB, free: 184.5 MB / 0.9981 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 9.37e-05/1.364, allocations: 199.9 kB / 1.27 GB, free: 184.3 MB / 0.9981 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005527/1.37, allocations: 3.16 MB / 1.273 GB, free: 183.2 MB / 0.9981 GB
Notification: Performance of collectPreVariables (initialization): time 0.0005354/1.371, allocations: 67.42 kB / 1.273 GB, free: 183.2 MB / 0.9981 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001077/1.372, allocations: 1.138 MB / 1.274 GB, free: 182.3 MB / 0.9981 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0006282/1.372, allocations: 0.544 MB / 1.275 GB, free: 181.9 MB / 0.9981 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.000746/1.373, allocations: 405.7 kB / 1.275 GB, free: 181.7 MB / 0.9981 GB
Notification: Performance of setup shared object (initialization): time 6.274e-05/1.373, allocations: 306.4 kB / 1.275 GB, free: 181.4 MB / 0.9981 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.00308/1.376, allocations: 1.35 MB / 1.277 GB, free: 180.7 MB / 0.9981 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.003355/1.38, allocations: 1.774 MB / 1.278 GB, free: 179.5 MB / 0.9981 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006205/1.386, allocations: 2.965 MB / 1.281 GB, free: 177.8 MB / 0.9981 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.802e-05/1.386, allocations: 3.125 kB / 1.281 GB, free: 177.8 MB / 0.9981 GB
Notification: Performance of matching and sorting (n=228) (initialization): time 0.0093/1.395, allocations: 3.669 MB / 1.285 GB, free: 175.9 MB / 0.9981 GB
Notification: Performance of prepare postOptimizeDAE: time 3.915e-05/1.395, allocations: 11.12 kB / 1.285 GB, free: 175.9 MB / 0.9981 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.556e-05/1.395, allocations: 10.41 kB / 1.285 GB, free: 175.9 MB / 0.9981 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001923/1.397, allocations: 405.4 kB / 1.285 GB, free: 175.7 MB / 0.9981 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00262/1.4, allocations: 0.5328 MB / 1.286 GB, free: 175.5 MB / 0.9981 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004695/1.404, allocations: 5.393 MB / 1.291 GB, free: 170.4 MB / 0.9981 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003774/1.408, allocations: 492.4 kB / 1.291 GB, free: 170.1 MB / 0.9981 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002969/1.409, allocations: 94.83 kB / 1.292 GB, free: 170.1 MB / 0.9981 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 46
 * Number of states: 0 ()
 * Number of discrete variables: 21 (weaDat.decAng.tNext,$PRE.weaDat.decAng.tNext,weaDat.eqnTim.tNext,$PRE.weaDat.eqnTim.tNext,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,weaDat.locTim.tNext,$PRE.weaDat.locTim.tNext,bouConExt.HDifTil[1].incAng.decAng.tNext,$PRE.bouConExt.HDifTil[1].incAng.decAng.tNext,bouConExt.HDirTil[1].incAng.decAng.tNext,$PRE.bouConExt.HDirTil[1].incAng.decAng.tNext,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5,$whenCondition6,$whenCondition7)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (215):
 * Single equations (assignments): 211
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 4
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 2 systems
   {(1,1,100.0%), (1,3,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 2 systems
   {(1,7), (1,2)}
Notification: Performance of prepare postOptimizeDAE: time 0.002088/1.411, allocations: 1.107 MB / 1.293 GB, free: 169.4 MB / 0.9981 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0008339/1.412, allocations: 246.7 kB / 1.293 GB, free: 169.2 MB / 0.9981 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.008125/1.42, allocations: 3.563 MB / 1.296 GB, free: 167.3 MB / 0.9981 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.696e-05/1.42, allocations: 19.38 kB / 1.296 GB, free: 167.3 MB / 0.9981 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 8.245e-06/1.42, allocations: 5.969 kB / 1.296 GB, free: 167.3 MB / 0.9981 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.783e-05/1.42, allocations: 11.14 kB / 1.296 GB, free: 167.3 MB / 0.9981 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004147/1.424, allocations: 2.977 MB / 1.299 GB, free: 165.2 MB / 0.9981 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.025e-06/1.424, allocations: 0 / 1.299 GB, free: 165.2 MB / 0.9981 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002026/1.426, allocations: 422.8 kB / 1.3 GB, free: 165.1 MB / 0.9981 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.001641/1.428, allocations: 378.7 kB / 1.3 GB, free: 164.9 MB / 0.9981 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001722/1.428, allocations: 66.98 kB / 1.3 GB, free: 164.9 MB / 0.9981 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003914/1.432, allocations: 5.409 MB / 1.305 GB, free: 159.7 MB / 0.9981 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.004e-06/1.432, allocations: 1.531 kB / 1.305 GB, free: 159.7 MB / 0.9981 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.009793/1.442, allocations: 4.915 MB / 1.31 GB, free: 155.6 MB / 0.9981 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.00186/1.443, allocations: 0.7941 MB / 1.311 GB, free: 154.8 MB / 0.9981 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000487/1.444, allocations: 47.98 kB / 1.311 GB, free: 154.8 MB / 0.9981 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002204/1.446, allocations: 324.7 kB / 1.311 GB, free: 154.4 MB / 0.9981 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003349/1.446, allocations: 137.8 kB / 1.311 GB, free: 154.3 MB / 0.9981 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001582/1.447, allocations: 67.94 kB / 1.311 GB, free: 154.2 MB / 0.9981 GB
Notification: Performance of sorting global known variables: time 0.002903/1.45, allocations: 2.255 MB / 1.314 GB, free: 152 MB / 0.9981 GB
Notification: Performance of sort global known variables: time 1.51e-07/1.45, allocations: 4 kB / 1.314 GB, free: 152 MB / 0.9981 GB
Notification: Performance of remove unused functions: time 0.002499/1.452, allocations: 0.8649 MB / 1.315 GB, free: 151.1 MB / 0.9981 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 5 (conExt[1].opa.lay[1].T[1],conExt[1].opa.lay[1].T[2],conExt[1].opa.lay[2].T[1],conExt[1].opa.lay[2].T[2],conExt[1].opa.lay[2].T[3])
 * Number of discrete variables: 14 ($whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,bouConExt.HDirTil[1].incAng.decAng.tNext,bouConExt.HDifTil[1].incAng.decAng.tNext,weaDat.locTim.tNext,weaDat.conTimMin.tNext,weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.decAng.tNext)
 * Number of discrete states: 7 (bouConExt.HDirTil[1].incAng.decAng.tNext,bouConExt.HDifTil[1].incAng.decAng.tNext,weaDat.locTim.tNext,weaDat.conTimMin.tNext,weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.decAng.tNext)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (172):
 * Single equations (assignments): 161
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 7
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 4
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 2 systems
   {(1,3,100.0%), (1,1,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 2 systems
   {(1,7), (1,3)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.01077/1.463, allocations: 6.071 MB / 1.32 GB, free: 145.3 MB / 0.9981 GB
Notification: Performance of simCode: created initialization part: time 0.006621/1.47, allocations: 3.363 MB / 1.324 GB, free: 141.9 MB / 0.9981 GB
Notification: Performance of simCode: created event and clocks part: time 7.574e-06/1.47, allocations: 4 kB / 1.324 GB, free: 141.9 MB / 0.9981 GB
Notification: Performance of simCode: created simulation system equations: time 0.003247/1.473, allocations: 1.823 MB / 1.326 GB, free: 140 MB / 0.9981 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003671/1.477, allocations: 0.7761 MB / 1.326 GB, free: 139.3 MB / 0.9981 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.05528/1.532, allocations: 31.45 MB / 1.357 GB, free: 106 MB / 0.9981 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001569/1.533, allocations: 2.353 MB / 1.359 GB, free: 103.6 MB / 0.9981 GB
Notification: Performance of simCode: alias equations: time 0.003047/1.536, allocations: 0.9048 MB / 1.36 GB, free: 102.7 MB / 0.9981 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001607/1.538, allocations: 1.151 MB / 1.361 GB, free: 101.5 MB / 0.9981 GB
Notification: Performance of SimCode: time 8.52e-07/1.538, allocations: 4 kB / 1.361 GB, free: 101.5 MB / 0.9981 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.6499/2.188, allocations: 68.69 MB / 1.428 GB, free: 33.47 MB / 0.9981 GB
Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002054/2.188, allocations: 315.5 kB / 1.429 GB, free: 33.09 MB / 0.9981 GB
Notification: Performance of buildModelFMU: Generate platform static: time 3.851/6.039, allocations: 0 / 1.429 GB, free: 33.09 MB / 0.9981 GB
(rm -f Buildings_latest_Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall.pipe ; mkfifo Buildings_latest_Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall.pipe ; head -c 1048576 < Buildings_latest_Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall.pipe >> ../files/Buildings_latest_Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_latest_Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall_res.mat --tempDir=temp_Buildings_latest_Buildings_ThermalZones_Detailed_Constructions_Examples_ExteriorWall_fmu --startTime=0 --stopTime=1.2096e+06 --timeout=50 --tolerance=1e-06 Buildings_latest_Buildings_ThermalZones_Detailed_Constructions_Examples_ExteriorWall.fmu > Buildings_latest_Buildings.ThermalZones.Detailed.Constructions.Examples.ExteriorWall.pipe 2>&1)