Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.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 9.1.3-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/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.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity,fileNamePrefix="Buildings_9_Buildings_Fluid_Chillers_Validation_Carnot_TEva_LimitedCapacity",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity,fileNamePrefix="Buildings_9_Buildings_Fluid_Chillers_Validation_Carnot_TEva_LimitedCapacity",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 0.005321/0.005321, allocations: 102.4 kB / 15.73 MB, free: 6.484 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001197/0.001197, allocations: 196.3 kB / 16.68 MB, free: 6.375 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.363/1.363, allocations: 222.9 MB / 240.4 MB, free: 4.312 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo): time 2.305/2.305, allocations: 390.2 MB / 0.6648 GB, free: 196 kB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.001202/0.001202, allocations: 62.94 kB / 0.9504 GB, free: 5.926 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.26/0.2612, allocations: 140.4 MB / 1.087 GB, free: 1.953 MB / 0.8419 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity): time 0.05541/0.3167, allocations: 61.22 MB / 1.147 GB, free: 4.516 MB / 0.9044 GB Notification: Performance of NFInst.instExpressions: time 0.01593/0.3327, allocations: 11.99 MB / 1.159 GB, free: 8.492 MB / 0.92 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001933/0.3346, allocations: 59.62 kB / 1.159 GB, free: 8.434 MB / 0.92 GB Notification: Performance of NFTyping.typeComponents: time 0.00167/0.3364, allocations: 0.6752 MB / 1.16 GB, free: 7.754 MB / 0.92 GB Notification: Performance of NFTyping.typeBindings: time 0.004763/0.3411, allocations: 1.971 MB / 1.162 GB, free: 5.773 MB / 0.92 GB Notification: Performance of NFTyping.typeClassSections: time 0.0028/0.3439, allocations: 1.208 MB / 1.163 GB, free: 4.574 MB / 0.92 GB Notification: Performance of NFFlatten.flatten: time 0.003682/0.3476, allocations: 3.077 MB / 1.166 GB, free: 1.488 MB / 0.92 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001348/0.349, allocations: 1.1 MB / 1.167 GB, free: 368 kB / 0.92 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002614/0.3516, allocations: 1.334 MB / 1.168 GB, free: 15.02 MB / 0.9356 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001159/0.3528, allocations: 0.8944 MB / 1.169 GB, free: 14.12 MB / 0.9356 GB Notification: Performance of NFPackage.collectConstants: time 0.000145/0.353, allocations: 116 kB / 1.169 GB, free: 14.01 MB / 0.9356 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002774/0.3557, allocations: 1.454 MB / 1.171 GB, free: 12.55 MB / 0.9356 GB Notification: Performance of NFScalarize.scalarize: time 0.0002737/0.356, allocations: 302.8 kB / 1.171 GB, free: 12.25 MB / 0.9356 GB Notification: Performance of NFVerifyModel.verify: time 0.0007317/0.3568, allocations: 0.6958 MB / 1.172 GB, free: 11.55 MB / 0.9356 GB Notification: Performance of NFConvertDAE.convert: time 0.002986/0.3598, allocations: 2.303 MB / 1.174 GB, free: 9.246 MB / 0.9356 GB Notification: Performance of FrontEnd - DAE generated: time 4.418e-06/0.3598, allocations: 0 / 1.174 GB, free: 9.246 MB / 0.9356 GB Notification: Performance of FrontEnd: time 1.683e-06/0.3598, allocations: 0 / 1.174 GB, free: 9.246 MB / 0.9356 GB Notification: Performance of Transformations before backend: time 1.435e-05/0.3598, allocations: 0 / 1.174 GB, free: 9.246 MB / 0.9356 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 192 * Number of variables: 192 Notification: Performance of Generate backend data structure: time 0.00289/0.3627, allocations: 1.73 MB / 1.176 GB, free: 7.453 MB / 0.9356 GB Notification: Performance of prepare preOptimizeDAE: time 4.094e-05/0.3627, allocations: 8.031 kB / 1.176 GB, free: 7.445 MB / 0.9356 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001365/0.3629, allocations: 126.9 kB / 1.176 GB, free: 7.312 MB / 0.9356 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00172/0.3646, allocations: 346.7 kB / 1.176 GB, free: 6.973 MB / 0.9356 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002118/0.3667, allocations: 1.155 MB / 1.177 GB, free: 5.762 MB / 0.9356 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.862e-05/0.3668, allocations: 62 kB / 1.177 GB, free: 5.699 MB / 0.9356 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001162/0.3669, allocations: 80 kB / 1.177 GB, free: 5.621 MB / 0.9356 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0018/0.3687, allocations: 0.9664 MB / 1.178 GB, free: 4.598 MB / 0.9356 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.019e-05/0.3688, allocations: 4 kB / 1.178 GB, free: 4.594 MB / 0.9356 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.122e-05/0.3689, allocations: 32 kB / 1.178 GB, free: 4.562 MB / 0.9356 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.811e-05/0.3689, allocations: 20 kB / 1.178 GB, free: 4.543 MB / 0.9356 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001957/0.3709, allocations: 0.8039 MB / 1.179 GB, free: 3.734 MB / 0.9356 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 0.006104/0.377, allocations: 5.138 MB / 1.184 GB, free: 14.23 MB / 0.9512 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001517/0.3785, allocations: 0.5591 MB / 1.185 GB, free: 13.66 MB / 0.9512 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005906/0.3791, allocations: 270.5 kB / 1.185 GB, free: 13.39 MB / 0.9512 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001344/0.3805, allocations: 1.365 MB / 1.186 GB, free: 11.73 MB / 0.9512 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.985e-05/0.3805, allocations: 38.5 kB / 1.186 GB, free: 11.69 MB / 0.9512 GB Notification: Performance of pre-optimization done (n=43): time 2.445e-06/0.3805, allocations: 0 / 1.186 GB, free: 11.69 MB / 0.9512 GB Notification: Performance of matching and sorting (n=43): time 0.006944/0.3875, allocations: 1.615 MB / 1.188 GB, free: 10.04 MB / 0.9512 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.137e-05/0.3875, allocations: 59.39 kB / 1.188 GB, free: 9.973 MB / 0.9512 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001626/0.3892, allocations: 1.08 MB / 1.189 GB, free: 8.879 MB / 0.9512 GB Notification: Performance of collectPreVariables (initialization): time 6.893e-05/0.3892, allocations: 33.7 kB / 1.189 GB, free: 8.84 MB / 0.9512 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004551/0.3897, allocations: 0.5272 MB / 1.189 GB, free: 8.309 MB / 0.9512 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001521/0.3899, allocations: 161.7 kB / 1.19 GB, free: 8.148 MB / 0.9512 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000224/0.3901, allocations: 134.2 kB / 1.19 GB, free: 8.012 MB / 0.9512 GB Notification: Performance of setup shared object (initialization): time 0.0001197/0.3902, allocations: 326 kB / 1.19 GB, free: 7.688 MB / 0.9512 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007657/0.391, allocations: 279.3 kB / 1.19 GB, free: 7.41 MB / 0.9512 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009617/0.392, allocations: 0.5047 MB / 1.191 GB, free: 6.812 MB / 0.9512 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001458/0.3934, allocations: 0.6546 MB / 1.191 GB, free: 6.09 MB / 0.9512 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.128e-06/0.3935, allocations: 0 / 1.191 GB, free: 6.09 MB / 0.9512 GB Notification: Performance of matching and sorting (n=71) (initialization): time 0.00248/0.3959, allocations: 0.9542 MB / 1.192 GB, free: 5.125 MB / 0.9512 GB Notification: Performance of prepare postOptimizeDAE: time 2.121e-05/0.396, allocations: 12.03 kB / 1.192 GB, free: 5.113 MB / 0.9512 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.197e-05/0.396, allocations: 4 kB / 1.192 GB, free: 5.109 MB / 0.9512 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001276/0.3973, allocations: 307.7 kB / 1.193 GB, free: 4.809 MB / 0.9512 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000482/0.3978, allocations: 123.8 kB / 1.193 GB, free: 4.688 MB / 0.9512 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001457/0.3992, allocations: 0.8957 MB / 1.194 GB, free: 3.766 MB / 0.9512 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001277/0.4005, allocations: 147.2 kB / 1.194 GB, free: 3.621 MB / 0.9512 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.076e-05/0.4006, allocations: 28 kB / 1.194 GB, free: 3.594 MB / 0.9512 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001205/0.4018, allocations: 497.2 kB / 1.194 GB, free: 3.102 MB / 0.9512 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0009399/0.4028, allocations: 0.4931 MB / 1.195 GB, free: 2.52 MB / 0.9512 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001425/0.4042, allocations: 0.6432 MB / 1.195 GB, free: 1.809 MB / 0.9512 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.717e-06/0.4042, allocations: 0 / 1.195 GB, free: 1.809 MB / 0.9512 GB Notification: Performance of matching and sorting (n=71) (initialization_lambda0): time 0.002521/0.4068, allocations: 0.9499 MB / 1.196 GB, free: 0.8477 MB / 0.9512 GB Notification: Performance of prepare postOptimizeDAE: time 1.506e-05/0.4068, allocations: 8 kB / 1.196 GB, free: 0.8398 MB / 0.9512 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.033e-06/0.4068, allocations: 4 kB / 1.196 GB, free: 0.8359 MB / 0.9512 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001091/0.4079, allocations: 300.7 kB / 1.197 GB, free: 0.5391 MB / 0.9512 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004888/0.4084, allocations: 119.8 kB / 1.197 GB, free: 432 kB / 0.9512 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001386/0.4098, allocations: 0.8986 MB / 1.198 GB, free: 15.5 MB / 0.9669 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001139/0.4109, allocations: 123.6 kB / 1.198 GB, free: 15.38 MB / 0.9669 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.536e-05/0.411, allocations: 31.98 kB / 1.198 GB, free: 15.34 MB / 0.9669 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 22 * 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 (57): * Single equations (assignments): 56 * 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 0.0002118/0.4112, allocations: 220.1 kB / 1.198 GB, free: 15.12 MB / 0.9669 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001777/0.4114, allocations: 110.6 kB / 1.198 GB, free: 15.01 MB / 0.9669 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00291/0.4143, allocations: 1 MB / 1.199 GB, free: 14 MB / 0.9669 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.264e-05/0.4144, allocations: 4 kB / 1.199 GB, free: 14 MB / 0.9669 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.579e-06/0.4144, allocations: 0 / 1.199 GB, free: 14 MB / 0.9669 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.62e-06/0.4144, allocations: 3.938 kB / 1.199 GB, free: 13.99 MB / 0.9669 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004857/0.4193, allocations: 2.071 MB / 1.201 GB, free: 11.84 MB / 0.9669 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.738e-06/0.4193, allocations: 7.938 kB / 1.201 GB, free: 11.84 MB / 0.9669 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002087/0.4195, allocations: 55.91 kB / 1.201 GB, free: 11.78 MB / 0.9669 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001001/0.4205, allocations: 296.8 kB / 1.201 GB, free: 11.49 MB / 0.9669 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.511e-05/0.4206, allocations: 12 kB / 1.201 GB, free: 11.48 MB / 0.9669 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001424/0.422, allocations: 0.9291 MB / 1.202 GB, free: 10.52 MB / 0.9669 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.328e-06/0.422, allocations: 4.031 kB / 1.202 GB, free: 10.52 MB / 0.9669 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003485/0.4255, allocations: 1.093 MB / 1.203 GB, free: 9.379 MB / 0.9669 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004714/0.426, allocations: 263.5 kB / 1.204 GB, free: 9.102 MB / 0.9669 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001348/0.4261, allocations: 12 kB / 1.204 GB, free: 9.09 MB / 0.9669 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007732/0.4269, allocations: 59.92 kB / 1.204 GB, free: 9.031 MB / 0.9669 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.447e-05/0.427, allocations: 43.83 kB / 1.204 GB, free: 8.988 MB / 0.9669 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.95e-05/0.427, allocations: 23.98 kB / 1.204 GB, free: 8.965 MB / 0.9669 GB Notification: Performance of sorting global known variables: time 0.00118/0.4282, allocations: 0.7551 MB / 1.205 GB, free: 8.203 MB / 0.9669 GB Notification: Performance of sort global known variables: time 1.7e-07/0.4282, allocations: 0 / 1.205 GB, free: 8.203 MB / 0.9669 GB Notification: Performance of remove unused functions: time 0.001566/0.4298, allocations: 0.5731 MB / 1.205 GB, free: 7.629 MB / 0.9669 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 (33): * Single equations (assignments): 28 * 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 0.004619/0.4344, allocations: 1.935 MB / 1.207 GB, free: 5.645 MB / 0.9669 GB Notification: Performance of simCode: created initialization part: time 0.002938/0.4374, allocations: 1.036 MB / 1.208 GB, free: 4.613 MB / 0.9669 GB Notification: Performance of simCode: created event and clocks part: time 5.711e-06/0.4374, allocations: 0 / 1.208 GB, free: 4.613 MB / 0.9669 GB Notification: Performance of simCode: created simulation system equations: time 0.0007909/0.4382, allocations: 322.5 kB / 1.208 GB, free: 4.297 MB / 0.9669 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002485/0.4407, allocations: 0.502 MB / 1.209 GB, free: 3.805 MB / 0.9669 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01542/0.4562, allocations: 8.039 MB / 1.217 GB, free: 11.44 MB / 0.9825 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005838/0.4568, allocations: 1.057 MB / 1.218 GB, free: 10.35 MB / 0.9825 GB Notification: Performance of simCode: alias equations: time 0.0008835/0.4577, allocations: 228.3 kB / 1.218 GB, free: 10.13 MB / 0.9825 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005114/0.4582, allocations: 411.3 kB / 1.218 GB, free: 9.727 MB / 0.9825 GB Notification: Performance of SimCode: time 2.675e-06/0.4582, allocations: 0 / 1.218 GB, free: 9.727 MB / 0.9825 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.104/0.5622, allocations: 33.75 MB / 1.251 GB, free: 8.383 MB / 1.014 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.39/13.95, allocations: 10.16 kB / 1.251 GB, free: 8.375 MB / 1.014 GB (rm -f Buildings_9_Buildings.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.pipe ; mkfifo Buildings_9_Buildings.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.pipe >> ../files/Buildings_9_Buildings.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_9_Buildings.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity_res.mat --tempDir=temp_Buildings_9_Buildings_Fluid_Chillers_Validation_Carnot_TEva_LimitedCapacity_fmu --startTime=0 --stopTime=3600 --timeout=50 --tolerance=1e-06 Buildings_9_Buildings_Fluid_Chillers_Validation_Carnot_TEva_LimitedCapacity.fmu > Buildings_9_Buildings.Fluid.Chillers.Validation.Carnot_TEva_LimitedCapacity.pipe 2>&1)