Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_HighTemperature.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/IDEAS 3.0.0/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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(IDEAS.Fluid.Chillers.Validation.Carnot_TEva_HighTemperature,fileNamePrefix="IDEAS_IDEAS_Fluid_Chillers_Validation_Carnot_TEva_HighTemperature",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.Chillers.Validation.Carnot_TEva_HighTemperature,fileNamePrefix="IDEAS_IDEAS_Fluid_Chillers_Validation_Carnot_TEva_HighTemperature",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 0.001398/0.001398, allocations: 108 kB / 15.6 MB, free: 132 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001568/0.001568, allocations: 193.5 kB / 16.53 MB, free: 6.391 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.252/1.252, allocations: 222.9 MB / 240.2 MB, free: 4.402 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7014/0.7014, allocations: 132.2 MB / 422.6 MB, free: 1.777 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001858/0.001858, allocations: 60.59 kB / 0.5019 GB, free: 3.742 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.357/0.3588, allocations: 80.2 MB / 0.5802 GB, free: 4.555 MB / 430.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Chillers.Validation.Carnot_TEva_HighTemperature): time 0.05502/0.4139, allocations: 61.21 MB / 0.64 GB, free: 4.105 MB / 478.1 MB Notification: Performance of NFInst.instExpressions: time 0.01489/0.4288, allocations: 11.99 MB / 0.6517 GB, free: 8.082 MB / 494.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001459/0.4303, allocations: 59.62 kB / 0.6517 GB, free: 8.023 MB / 494.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001459/0.4318, allocations: 0.6869 MB / 0.6524 GB, free: 7.332 MB / 494.1 MB Notification: Performance of NFTyping.typeBindings: time 0.003861/0.4357, allocations: 1.963 MB / 0.6543 GB, free: 5.359 MB / 494.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.002347/0.438, allocations: 1.201 MB / 0.6555 GB, free: 4.172 MB / 494.1 MB Notification: Performance of NFFlatten.flatten: time 0.003056/0.4411, allocations: 3.099 MB / 0.6585 GB, free: 1.062 MB / 494.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001237/0.4424, allocations: 1.104 MB / 0.6596 GB, free: 15.92 MB / 0.4981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002356/0.4447, allocations: 1.323 MB / 0.6609 GB, free: 14.59 MB / 0.4981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.000982/0.4457, allocations: 0.9023 MB / 0.6618 GB, free: 13.69 MB / 0.4981 GB Notification: Performance of NFPackage.collectConstants: time 0.0001614/0.4459, allocations: 120 kB / 0.6619 GB, free: 13.57 MB / 0.4981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002431/0.4483, allocations: 1.458 MB / 0.6633 GB, free: 12.11 MB / 0.4981 GB Notification: Performance of NFScalarize.scalarize: time 0.0002529/0.4486, allocations: 286.9 kB / 0.6636 GB, free: 11.83 MB / 0.4981 GB Notification: Performance of NFVerifyModel.verify: time 0.0006108/0.4492, allocations: 0.6997 MB / 0.6643 GB, free: 11.12 MB / 0.4981 GB Notification: Performance of NFConvertDAE.convert: time 0.002768/0.452, allocations: 2.298 MB / 0.6665 GB, free: 8.82 MB / 0.4981 GB Notification: Performance of FrontEnd - DAE generated: time 5.08e-06/0.452, allocations: 0 / 0.6665 GB, free: 8.82 MB / 0.4981 GB Notification: Performance of FrontEnd: time 1.684e-06/0.452, allocations: 0 / 0.6665 GB, free: 8.82 MB / 0.4981 GB Notification: Performance of Transformations before backend: time 1.666e-05/0.452, allocations: 0 / 0.6665 GB, free: 8.82 MB / 0.4981 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 194 * Number of variables: 194 Notification: Performance of Generate backend data structure: time 0.002772/0.4548, allocations: 1.744 MB / 0.6682 GB, free: 7.02 MB / 0.4981 GB Notification: Performance of prepare preOptimizeDAE: time 3.593e-05/0.4549, allocations: 15.97 kB / 0.6682 GB, free: 7.004 MB / 0.4981 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001278/0.455, allocations: 130.9 kB / 0.6684 GB, free: 6.867 MB / 0.4981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002079/0.4571, allocations: 406.5 kB / 0.6687 GB, free: 6.469 MB / 0.4981 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00172/0.4588, allocations: 1.112 MB / 0.6698 GB, free: 5.297 MB / 0.4981 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003408/0.4592, allocations: 121.9 kB / 0.6699 GB, free: 5.18 MB / 0.4981 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001061/0.4593, allocations: 80 kB / 0.67 GB, free: 5.102 MB / 0.4981 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001879/0.4612, allocations: 1.029 MB / 0.671 GB, free: 4.012 MB / 0.4981 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.606e-05/0.4612, allocations: 0 / 0.671 GB, free: 4.012 MB / 0.4981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.45e-05/0.4613, allocations: 36 kB / 0.6711 GB, free: 3.977 MB / 0.4981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.676e-05/0.4613, allocations: 20 kB / 0.6711 GB, free: 3.957 MB / 0.4981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00227/0.4636, allocations: 0.8936 MB / 0.672 GB, free: 3.062 MB / 0.4981 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 0.005745/0.4693, allocations: 5.277 MB / 0.6771 GB, free: 13.41 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003412/0.4727, allocations: 0.7997 MB / 0.6779 GB, free: 12.6 MB / 0.5137 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007568/0.4735, allocations: 320.6 kB / 0.6782 GB, free: 12.28 MB / 0.5137 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005791/0.4741, allocations: 0.8986 MB / 0.6791 GB, free: 11.18 MB / 0.5137 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.584e-05/0.4741, allocations: 42.56 kB / 0.6791 GB, free: 11.13 MB / 0.5137 GB Notification: Performance of pre-optimization done (n=44): time 1.723e-06/0.4741, allocations: 0 / 0.6791 GB, free: 11.13 MB / 0.5137 GB Notification: Performance of matching and sorting (n=44): time 0.006309/0.4805, allocations: 1.654 MB / 0.6807 GB, free: 9.445 MB / 0.5137 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.068e-05/0.4805, allocations: 63.28 kB / 0.6808 GB, free: 9.371 MB / 0.5137 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001384/0.4819, allocations: 1.084 MB / 0.6818 GB, free: 8.273 MB / 0.5137 GB Notification: Performance of collectPreVariables (initialization): time 5.13e-05/0.482, allocations: 33.7 kB / 0.6819 GB, free: 8.234 MB / 0.5137 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003829/0.4823, allocations: 0.5351 MB / 0.6824 GB, free: 7.695 MB / 0.5137 GB Notification: Performance of collectInitialBindings (initialization): time 0.000114/0.4825, allocations: 157.8 kB / 0.6826 GB, free: 7.539 MB / 0.5137 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002117/0.4827, allocations: 134.2 kB / 0.6827 GB, free: 7.398 MB / 0.5137 GB Notification: Performance of setup shared object (initialization): time 0.0001063/0.4828, allocations: 333.9 kB / 0.683 GB, free: 7.066 MB / 0.5137 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009493/0.4838, allocations: 327.2 kB / 0.6833 GB, free: 6.746 MB / 0.5137 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001118/0.4849, allocations: 0.5524 MB / 0.6838 GB, free: 6.098 MB / 0.5137 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00178/0.4867, allocations: 0.7512 MB / 0.6846 GB, free: 5.277 MB / 0.5137 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.637e-06/0.4867, allocations: 0 / 0.6846 GB, free: 5.277 MB / 0.5137 GB Notification: Performance of matching and sorting (n=72) (initialization): time 0.002791/0.4895, allocations: 1.055 MB / 0.6856 GB, free: 4.211 MB / 0.5137 GB Notification: Performance of prepare postOptimizeDAE: time 2.08e-05/0.4895, allocations: 9.875 kB / 0.6856 GB, free: 4.203 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.021e-05/0.4895, allocations: 4 kB / 0.6856 GB, free: 4.199 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001233/0.4908, allocations: 323.4 kB / 0.6859 GB, free: 3.883 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005605/0.4913, allocations: 131.8 kB / 0.6861 GB, free: 3.754 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001445/0.4928, allocations: 0.919 MB / 0.687 GB, free: 2.809 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001099/0.4939, allocations: 155.2 kB / 0.6871 GB, free: 2.656 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.785e-05/0.494, allocations: 31.98 kB / 0.6871 GB, free: 2.625 MB / 0.5137 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001178/0.4952, allocations: 0.5324 MB / 0.6877 GB, free: 2.09 MB / 0.5137 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001092/0.4963, allocations: 0.5446 MB / 0.6882 GB, free: 1.449 MB / 0.5137 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001758/0.498, allocations: 0.7338 MB / 0.6889 GB, free: 0.6445 MB / 0.5137 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.681e-06/0.4981, allocations: 4 kB / 0.6889 GB, free: 0.6406 MB / 0.5137 GB Notification: Performance of matching and sorting (n=72) (initialization_lambda0): time 0.00273/0.5008, allocations: 1.055 MB / 0.6899 GB, free: 15.57 MB / 0.5294 GB Notification: Performance of prepare postOptimizeDAE: time 1.068e-05/0.5008, allocations: 4 kB / 0.6899 GB, free: 15.57 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.745e-06/0.5008, allocations: 12.03 kB / 0.69 GB, free: 15.56 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001041/0.5019, allocations: 304.5 kB / 0.6902 GB, free: 15.26 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000554/0.5024, allocations: 131.8 kB / 0.6904 GB, free: 15.13 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001368/0.5038, allocations: 0.9293 MB / 0.6913 GB, free: 14.18 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001124/0.505, allocations: 139.6 kB / 0.6914 GB, free: 14.04 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.058e-05/0.505, allocations: 27.98 kB / 0.6914 GB, free: 14.01 MB / 0.5294 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 23 * 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 (58): * Single equations (assignments): 57 * 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 {(1,14)} Notification: Performance of prepare postOptimizeDAE: time 0.0001889/0.5052, allocations: 225.4 kB / 0.6917 GB, free: 13.79 MB / 0.5294 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001739/0.5054, allocations: 114.6 kB / 0.6918 GB, free: 13.67 MB / 0.5294 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00328/0.5087, allocations: 1.107 MB / 0.6928 GB, free: 12.56 MB / 0.5294 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.186e-05/0.5087, allocations: 15.92 kB / 0.6929 GB, free: 12.55 MB / 0.5294 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.079e-06/0.5087, allocations: 0 / 0.6929 GB, free: 12.55 MB / 0.5294 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.53e-06/0.5087, allocations: 0 / 0.6929 GB, free: 12.55 MB / 0.5294 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005051/0.5138, allocations: 2.203 MB / 0.695 GB, free: 10.26 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.027e-06/0.5138, allocations: 4 kB / 0.695 GB, free: 10.25 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003046/0.5141, allocations: 67.88 kB / 0.6951 GB, free: 10.19 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000955/0.5151, allocations: 304.9 kB / 0.6954 GB, free: 9.887 MB / 0.5294 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.784e-05/0.5151, allocations: 12 kB / 0.6954 GB, free: 9.875 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001458/0.5166, allocations: 0.9515 MB / 0.6963 GB, free: 8.898 MB / 0.5294 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.175e-05/0.5166, allocations: 4.031 kB / 0.6963 GB, free: 8.895 MB / 0.5294 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0039/0.5205, allocations: 1.205 MB / 0.6975 GB, free: 7.645 MB / 0.5294 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004368/0.521, allocations: 267.5 kB / 0.6977 GB, free: 7.363 MB / 0.5294 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001904/0.5212, allocations: 8 kB / 0.6978 GB, free: 7.355 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008735/0.5221, allocations: 79.91 kB / 0.6978 GB, free: 7.277 MB / 0.5294 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001007/0.5222, allocations: 39.83 kB / 0.6979 GB, free: 7.238 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.961e-05/0.5222, allocations: 23.98 kB / 0.6979 GB, free: 7.215 MB / 0.5294 GB Notification: Performance of sorting global known variables: time 0.001236/0.5235, allocations: 0.7633 MB / 0.6986 GB, free: 6.445 MB / 0.5294 GB Notification: Performance of sort global known variables: time 3.31e-07/0.5235, allocations: 0 / 0.6986 GB, free: 6.445 MB / 0.5294 GB Notification: Performance of remove unused functions: time 0.001611/0.5251, allocations: 0.5731 MB / 0.6992 GB, free: 5.871 MB / 0.5294 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 10 * 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 (34): * Single equations (assignments): 29 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * 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 {(1,16)} Notification: Performance of Backend phase and start with SimCode phase: time 0.004677/0.5298, allocations: 2.031 MB / 0.7012 GB, free: 3.797 MB / 0.5294 GB Notification: Performance of simCode: created initialization part: time 0.003441/0.5332, allocations: 1.199 MB / 0.7023 GB, free: 2.602 MB / 0.5294 GB Notification: Performance of simCode: created event and clocks part: time 3.647e-06/0.5333, allocations: 0 / 0.7023 GB, free: 2.602 MB / 0.5294 GB Notification: Performance of simCode: created simulation system equations: time 0.0009521/0.5342, allocations: 370.5 kB / 0.7027 GB, free: 2.242 MB / 0.5294 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002169/0.5364, allocations: 0.5061 MB / 0.7032 GB, free: 1.754 MB / 0.5294 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0173/0.5537, allocations: 9.038 MB / 0.712 GB, free: 8.234 MB / 0.545 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000594/0.5543, allocations: 1.061 MB / 0.7131 GB, free: 7.145 MB / 0.545 GB Notification: Performance of simCode: alias equations: time 0.0009115/0.5552, allocations: 239.2 kB / 0.7133 GB, free: 6.918 MB / 0.545 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000526/0.5558, allocations: 415.3 kB / 0.7137 GB, free: 6.512 MB / 0.545 GB Notification: Performance of SimCode: time 7.21e-07/0.5558, allocations: 0 / 0.7137 GB, free: 6.512 MB / 0.545 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.3065/0.8623, allocations: 33.68 MB / 0.7466 GB, free: 5.355 MB / 0.5762 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.83/14.69, allocations: 1.031 kB / 0.7466 GB, free: 5.355 MB / 0.5762 GB (rm -f IDEAS_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_HighTemperature.pipe ; mkfifo IDEAS_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_HighTemperature.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_HighTemperature.pipe >> ../files/IDEAS_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_HighTemperature.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IDEAS_IDEAS_Fluid_Chillers_Validation_Carnot_TEva_HighTemperature_fmu --startTime=0 --stopTime=3600 --timeout=50 --tolerance=1e-06 IDEAS_IDEAS_Fluid_Chillers_Validation_Carnot_TEva_HighTemperature.fmu > IDEAS_IDEAS.Fluid.Chillers.Validation.Carnot_TEva_HighTemperature.pipe 2>&1)