Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter.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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-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: translateModel(BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter") translateModel(BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.005004/0.005004, allocations: 103.9 kB / 15.74 MB, free: 5.953 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00106/0.00106, allocations: 188.9 kB / 16.67 MB, free: 5.883 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.352/1.352, allocations: 222.9 MB / 240.4 MB, free: 4.16 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002115/0.002115, allocations: 283 kB / 290.8 MB, free: 1.766 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9784/0.9784, allocations: 169.3 MB / 0.4983 GB, free: 13.82 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001684/0.001684, allocations: 95.86 kB / 0.6814 GB, free: 15.54 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1714/0.173, allocations: 86.98 MB / 0.7664 GB, free: 8.473 MB / 0.5606 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter): time 0.3616/0.5347, allocations: 15.02 MB / 0.781 GB, free: 7.406 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.004627/0.5394, allocations: 3.893 MB / 0.7849 GB, free: 5.492 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004577/0.5399, allocations: 22.19 kB / 0.7849 GB, free: 5.484 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.0005243/0.5404, allocations: 179.9 kB / 0.785 GB, free: 5.406 MB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.001468/0.542, allocations: 0.6891 MB / 0.7857 GB, free: 5.062 MB / 0.5606 GB Notification: Performance of NFTyping.typeClassSections: time 0.001179/0.5432, allocations: 479.3 kB / 0.7862 GB, free: 4.848 MB / 0.5606 GB Notification: Performance of NFFlatten.flatten: time 0.001446/0.5446, allocations: 1.073 MB / 0.7872 GB, free: 4.375 MB / 0.5606 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004747/0.5451, allocations: 287.1 kB / 0.7875 GB, free: 4.258 MB / 0.5606 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0007846/0.5459, allocations: 414.6 kB / 0.7879 GB, free: 4.082 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0003775/0.5463, allocations: 262.3 kB / 0.7881 GB, free: 3.969 MB / 0.5606 GB Notification: Performance of NFPackage.collectConstants: time 5.367e-05/0.5463, allocations: 25.09 kB / 0.7882 GB, free: 3.965 MB / 0.5606 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001355/0.5477, allocations: 0.7172 MB / 0.7889 GB, free: 3.73 MB / 0.5606 GB Notification: Performance of NFScalarize.scalarize: time 0.0001086/0.5478, allocations: 74.42 kB / 0.7889 GB, free: 3.688 MB / 0.5606 GB Notification: Performance of NFVerifyModel.verify: time 0.0001651/0.548, allocations: 188.8 kB / 0.7891 GB, free: 3.578 MB / 0.5606 GB Notification: Performance of NFConvertDAE.convert: time 0.001072/0.5491, allocations: 0.7258 MB / 0.7898 GB, free: 3.32 MB / 0.5606 GB Notification: Performance of FrontEnd - DAE generated: time 6.842e-06/0.5491, allocations: 0.5156 kB / 0.7898 GB, free: 3.32 MB / 0.5606 GB Notification: Performance of FrontEnd: time 1.964e-06/0.5491, allocations: 6.5 kB / 0.7898 GB, free: 3.316 MB / 0.5606 GB Notification: Performance of Transformations before backend: time 7.915e-06/0.5491, allocations: 0 / 0.7898 GB, free: 3.316 MB / 0.5606 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 40 * Number of variables: 40 Notification: Performance of Generate backend data structure: time 0.00102/0.5501, allocations: 0.7437 MB / 0.7906 GB, free: 2.707 MB / 0.5606 GB Notification: Performance of prepare preOptimizeDAE: time 3.698e-05/0.5502, allocations: 15.2 kB / 0.7906 GB, free: 2.703 MB / 0.5606 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 8.525e-05/0.5503, allocations: 46.34 kB / 0.7906 GB, free: 2.68 MB / 0.5606 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0008357/0.5511, allocations: 0.5095 MB / 0.7911 GB, free: 2.328 MB / 0.5606 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.708e-05/0.5511, allocations: 16.17 kB / 0.7911 GB, free: 2.32 MB / 0.5606 GB Notification: Performance of preOpt expandDerOperator (simulation): time 2.645e-05/0.5512, allocations: 15 kB / 0.7911 GB, free: 2.316 MB / 0.5606 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0003626/0.5515, allocations: 180.9 kB / 0.7913 GB, free: 2.238 MB / 0.5606 GB Notification: Performance of preOpt findStateOrder (simulation): time 9.839e-06/0.5516, allocations: 4.641 kB / 0.7913 GB, free: 2.234 MB / 0.5606 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.084e-05/0.5516, allocations: 8.094 kB / 0.7913 GB, free: 2.23 MB / 0.5606 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.126e-06/0.5516, allocations: 4.406 kB / 0.7913 GB, free: 2.23 MB / 0.5606 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0003232/0.5519, allocations: 142.5 kB / 0.7915 GB, free: 2.188 MB / 0.5606 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 0.0009808/0.5529, allocations: 0.8505 MB / 0.7923 GB, free: 1.516 MB / 0.5606 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0002517/0.5532, allocations: 129.9 kB / 0.7924 GB, free: 1.453 MB / 0.5606 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001475/0.5533, allocations: 70.97 kB / 0.7925 GB, free: 1.43 MB / 0.5606 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002113/0.5536, allocations: 335.1 kB / 0.7928 GB, free: 1.051 MB / 0.5606 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.133e-05/0.5536, allocations: 33.34 kB / 0.7928 GB, free: 1.012 MB / 0.5606 GB Notification: Performance of pre-optimization done (n=12): time 1.983e-06/0.5536, allocations: 3.188 kB / 0.7928 GB, free: 1.012 MB / 0.5606 GB Notification: Performance of matching and sorting (n=12): time 0.0005301/0.5541, allocations: 228.8 kB / 0.7931 GB, free: 0.9102 MB / 0.5606 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.416e-05/0.5542, allocations: 54.97 kB / 0.7931 GB, free: 0.8477 MB / 0.5606 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003066/0.5545, allocations: 346.8 kB / 0.7934 GB, free: 0.668 MB / 0.5606 GB Notification: Performance of collectPreVariables (initialization): time 1.715e-05/0.5545, allocations: 27.2 kB / 0.7935 GB, free: 0.6367 MB / 0.5606 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001015/0.5546, allocations: 192.9 kB / 0.7937 GB, free: 488 kB / 0.5606 GB Notification: Performance of collectInitialBindings (initialization): time 3.365e-05/0.5546, allocations: 47.36 kB / 0.7937 GB, free: 448 kB / 0.5606 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.723e-05/0.5547, allocations: 33.64 kB / 0.7937 GB, free: 424 kB / 0.5606 GB Notification: Performance of setup shared object (initialization): time 6.885e-05/0.5548, allocations: 349.3 kB / 0.7941 GB, free: 84 kB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000136/0.5549, allocations: 51.59 kB / 0.7941 GB, free: 64 kB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001504/0.5551, allocations: 86.23 kB / 0.7942 GB, free: 12 kB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002821/0.5554, allocations: 119.1 kB / 0.7943 GB, free: 15.96 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.255e-06/0.5554, allocations: 0 / 0.7943 GB, free: 15.96 MB / 0.5762 GB Notification: Performance of matching and sorting (n=12) (initialization): time 0.0003884/0.5558, allocations: 179.2 kB / 0.7945 GB, free: 15.88 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 1.459e-05/0.5558, allocations: 4.656 kB / 0.7945 GB, free: 15.88 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.637e-06/0.5558, allocations: 5.734 kB / 0.7945 GB, free: 15.87 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.369e-05/0.5558, allocations: 2.547 kB / 0.7945 GB, free: 15.87 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000142/0.556, allocations: 26.7 kB / 0.7945 GB, free: 15.87 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.593e-06/0.556, allocations: 0.6562 kB / 0.7945 GB, free: 15.87 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001903/0.5562, allocations: 25.72 kB / 0.7945 GB, free: 15.86 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.556e-05/0.5562, allocations: 5.703 kB / 0.7946 GB, free: 15.86 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0002191/0.5565, allocations: 159.2 kB / 0.7947 GB, free: 15.75 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0001664/0.5566, allocations: 92.56 kB / 0.7948 GB, free: 15.69 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0002554/0.5569, allocations: 110 kB / 0.7949 GB, free: 15.64 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 8.42e-07/0.5569, allocations: 0 / 0.7949 GB, free: 15.64 MB / 0.5762 GB Notification: Performance of matching and sorting (n=12) (initialization_lambda0): time 0.0003421/0.5573, allocations: 173.3 kB / 0.7951 GB, free: 15.57 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 7.434e-06/0.5573, allocations: 4.562 kB / 0.7951 GB, free: 15.57 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.444e-06/0.5573, allocations: 1.5 kB / 0.7951 GB, free: 15.57 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.529e-06/0.5573, allocations: 4.688 kB / 0.7951 GB, free: 15.56 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001229/0.5574, allocations: 23.17 kB / 0.7951 GB, free: 15.56 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.968e-06/0.5574, allocations: 6.156 kB / 0.7951 GB, free: 15.56 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001824/0.5576, allocations: 18.59 kB / 0.7951 GB, free: 15.55 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.376e-05/0.5576, allocations: 4.453 kB / 0.7951 GB, free: 15.55 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 2 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (12): * Single equations (assignments): 12 * Array equations: 0 * Algorithm blocks: 0 * 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 0.0001124/0.5578, allocations: 186.5 kB / 0.7953 GB, free: 15.37 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.256e-05/0.5578, allocations: 34.59 kB / 0.7953 GB, free: 15.35 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0005223/0.5584, allocations: 240.4 kB / 0.7956 GB, free: 15.25 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.626e-06/0.5584, allocations: 4.656 kB / 0.7956 GB, free: 15.24 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.751e-06/0.5584, allocations: 3.938 kB / 0.7956 GB, free: 15.24 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.689e-06/0.5584, allocations: 4.234 kB / 0.7956 GB, free: 15.24 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0009429/0.5593, allocations: 0.6314 MB / 0.7962 GB, free: 14.8 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.31e-06/0.5594, allocations: 1.828 kB / 0.7962 GB, free: 14.8 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001067/0.5595, allocations: 28.36 kB / 0.7962 GB, free: 14.79 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 3.376e-06/0.5595, allocations: 3 kB / 0.7962 GB, free: 14.79 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.543e-05/0.5595, allocations: 8.219 kB / 0.7962 GB, free: 14.79 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.134e-06/0.5595, allocations: 0 / 0.7962 GB, free: 14.79 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.116e-06/0.5595, allocations: 0 / 0.7962 GB, free: 14.79 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004495/0.56, allocations: 325.1 kB / 0.7965 GB, free: 14.56 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001158/0.5601, allocations: 124.3 kB / 0.7967 GB, free: 14.45 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.267e-05/0.5602, allocations: 5.062 kB / 0.7967 GB, free: 14.44 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002002/0.5604, allocations: 12.31 kB / 0.7967 GB, free: 14.44 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.938e-05/0.5604, allocations: 14.2 kB / 0.7967 GB, free: 14.44 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.472e-05/0.5604, allocations: 6.438 kB / 0.7967 GB, free: 14.44 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.0002341/0.5607, allocations: 248.5 kB / 0.7969 GB, free: 14.31 MB / 0.5762 GB Notification: Performance of sort global known variables: time 1.2e-07/0.5607, allocations: 0 / 0.7969 GB, free: 14.31 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.0006056/0.5613, allocations: 190.5 kB / 0.7971 GB, free: 14.27 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (14): * Single equations (assignments): 12 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * 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 0.0005311/0.5618, allocations: 252.2 kB / 0.7974 GB, free: 14.12 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.0005033/0.5623, allocations: 190.2 kB / 0.7975 GB, free: 14.08 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 2.635e-06/0.5624, allocations: 192 / 0.7975 GB, free: 14.08 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.0001723/0.5625, allocations: 77.19 kB / 0.7976 GB, free: 14.06 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0007936/0.5633, allocations: 158.8 kB / 0.7978 GB, free: 14.01 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0007893/0.5641, allocations: 0.5553 MB / 0.7983 GB, free: 13.66 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003456/0.5645, allocations: 0.7957 MB / 0.7991 GB, free: 12.95 MB / 0.5762 GB Notification: Performance of simCode: alias equations: time 0.0002156/0.5647, allocations: 82.98 kB / 0.7992 GB, free: 12.93 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 5.727e-05/0.5648, allocations: 30.62 kB / 0.7992 GB, free: 12.92 MB / 0.5762 GB Notification: Performance of SimCode: time 2.51e-07/0.5648, allocations: 4 kB / 0.7992 GB, free: 12.92 MB / 0.5762 GB Notification: Performance of Templates: time 0.01473/0.5795, allocations: 6.591 MB / 0.8056 GB, free: 12.4 MB / 0.5762 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter.sim & ./BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe 2>&1)