Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction.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: "" <> buildModelFMU(BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_FixedResistances_Examples_FlowJunction",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_FixedResistances_Examples_FlowJunction",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 0.005897/0.005897, allocations: 99.83 kB / 15.73 MB, free: 6.012 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001271/0.001271, allocations: 193.5 kB / 16.67 MB, free: 5.93 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.408/1.408, allocations: 222.9 MB / 240.4 MB, free: 15.15 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002123/0.002123, allocations: 288.8 kB / 290.8 MB, free: 14.43 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9422/0.9422, allocations: 169.3 MB / 0.4983 GB, free: 4.422 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001782/0.001783, allocations: 95.84 kB / 0.681 GB, free: 7.469 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4214/0.4232, allocations: 86.98 MB / 0.7659 GB, free: 3.859 MB / 0.5294 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction): time 0.5973/1.02, allocations: 239.9 MB / 1 GB, free: 19.52 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.009515/1.03, allocations: 7.204 MB / 1.007 GB, free: 19.39 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001753/1.032, allocations: 54.62 kB / 1.007 GB, free: 19.39 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.001679/1.034, allocations: 0.7224 MB / 1.008 GB, free: 19.38 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.004775/1.038, allocations: 2.165 MB / 1.01 GB, free: 19.3 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.004296/1.043, allocations: 2.057 MB / 1.012 GB, free: 19.23 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.003705/1.046, allocations: 3.28 MB / 1.015 GB, free: 19.22 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001395/1.048, allocations: 1.137 MB / 1.016 GB, free: 19.11 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003255/1.051, allocations: 1.86 MB / 1.018 GB, free: 19.08 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001675/1.053, allocations: 0.9595 MB / 1.019 GB, free: 18.97 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 0.0001944/1.053, allocations: 122.8 kB / 1.019 GB, free: 18.97 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004424/1.057, allocations: 2.506 MB / 1.022 GB, free: 18.94 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.0004876/1.058, allocations: 461.6 kB / 1.022 GB, free: 18.89 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.0009189/1.059, allocations: 0.7175 MB / 1.023 GB, free: 18.7 MB / 0.7169 GB Notification: Performance of NFConvertDAE.convert: time 0.004376/1.063, allocations: 2.707 MB / 1.025 GB, free: 18.38 MB / 0.7169 GB Notification: Performance of FrontEnd - DAE generated: time 4.889e-06/1.063, allocations: 0 / 1.025 GB, free: 18.38 MB / 0.7169 GB Notification: Performance of FrontEnd: time 1.743e-06/1.063, allocations: 3.938 kB / 1.025 GB, free: 18.38 MB / 0.7169 GB Notification: Performance of Transformations before backend: time 3.017e-05/1.063, allocations: 0.9375 kB / 1.025 GB, free: 18.38 MB / 0.7169 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 197 * Number of variables: 197 Notification: Performance of Generate backend data structure: time 0.002765/1.066, allocations: 1.759 MB / 1.027 GB, free: 17.41 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 4.273e-05/1.066, allocations: 8.438 kB / 1.027 GB, free: 17.41 MB / 0.7169 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001573/1.066, allocations: 129 kB / 1.027 GB, free: 17.38 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002716/1.069, allocations: 429.1 kB / 1.028 GB, free: 17.3 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00176/1.071, allocations: 1.028 MB / 1.029 GB, free: 16.94 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.808e-05/1.071, allocations: 67.38 kB / 1.029 GB, free: 16.93 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001304/1.071, allocations: 82.28 kB / 1.029 GB, free: 16.93 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001452/1.072, allocations: 0.8661 MB / 1.03 GB, free: 16.88 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.61e-05/1.072, allocations: 0.7812 kB / 1.03 GB, free: 16.88 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.147e-05/1.073, allocations: 31.69 kB / 1.03 GB, free: 16.88 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.756e-05/1.073, allocations: 33.98 kB / 1.03 GB, free: 16.87 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001372/1.074, allocations: 0.8062 MB / 1.031 GB, free: 16.86 MB / 0.7169 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 0.004245/1.078, allocations: 3.652 MB / 1.034 GB, free: 15.12 MB / 0.7169 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001272/1.08, allocations: 1.096 MB / 1.035 GB, free: 14.31 MB / 0.7169 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005105/1.08, allocations: 379.6 kB / 1.036 GB, free: 14.17 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005766/1.081, allocations: 398.7 kB / 1.036 GB, free: 13.79 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.379e-05/1.081, allocations: 50.67 kB / 1.036 GB, free: 13.74 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=60): time 2.245e-06/1.081, allocations: 3.406 kB / 1.036 GB, free: 13.74 MB / 0.7169 GB Notification: Performance of matching and sorting (n=60): time 0.001949/1.083, allocations: 0.9524 MB / 1.037 GB, free: 13.39 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.448e-05/1.083, allocations: 64.45 kB / 1.037 GB, free: 13.33 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009211/1.084, allocations: 0.8368 MB / 1.038 GB, free: 12.98 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 6.094e-05/1.084, allocations: 40.14 kB / 1.038 GB, free: 12.94 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002559/1.084, allocations: 484 kB / 1.038 GB, free: 12.57 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001557/1.084, allocations: 227.2 kB / 1.039 GB, free: 12.39 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001717/1.084, allocations: 113.5 kB / 1.039 GB, free: 12.34 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 4.809e-05/1.084, allocations: 328.8 kB / 1.039 GB, free: 12.02 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004692/1.085, allocations: 256.3 kB / 1.039 GB, free: 11.93 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005397/1.085, allocations: 372.2 kB / 1.04 GB, free: 11.74 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009775/1.086, allocations: 0.5862 MB / 1.04 GB, free: 11.48 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.186e-06/1.086, allocations: 0 / 1.04 GB, free: 11.48 MB / 0.7169 GB Notification: Performance of matching and sorting (n=69) (initialization): time 0.001275/1.088, allocations: 0.7382 MB / 1.041 GB, free: 11.18 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 1.717e-05/1.088, allocations: 12.31 kB / 1.041 GB, free: 11.18 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.953e-06/1.088, allocations: 2.75 kB / 1.041 GB, free: 11.18 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.197e-05/1.088, allocations: 7.453 kB / 1.041 GB, free: 11.17 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000562/1.088, allocations: 136.2 kB / 1.041 GB, free: 11.16 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 9.397e-06/1.088, allocations: 2.438 kB / 1.041 GB, free: 11.16 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007672/1.089, allocations: 70.14 kB / 1.041 GB, free: 11.13 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.967e-05/1.089, allocations: 29.53 kB / 1.041 GB, free: 11.12 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0007126/1.09, allocations: 498.7 kB / 1.042 GB, free: 10.88 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004931/1.09, allocations: 371.7 kB / 1.042 GB, free: 10.68 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0008692/1.091, allocations: 0.5759 MB / 1.042 GB, free: 10.43 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.964e-06/1.091, allocations: 0 / 1.042 GB, free: 10.43 MB / 0.7169 GB Notification: Performance of matching and sorting (n=69) (initialization_lambda0): time 0.001139/1.092, allocations: 0.7334 MB / 1.043 GB, free: 10.12 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 9.227e-06/1.092, allocations: 5 kB / 1.043 GB, free: 10.12 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.048e-06/1.092, allocations: 3.938 kB / 1.043 GB, free: 10.12 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.711e-06/1.092, allocations: 5.094 kB / 1.043 GB, free: 10.12 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005333/1.093, allocations: 124.4 kB / 1.043 GB, free: 10.12 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.552e-06/1.093, allocations: 4.75 kB / 1.043 GB, free: 10.12 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007304/1.094, allocations: 67 kB / 1.043 GB, free: 10.09 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.179e-05/1.094, allocations: 25.25 kB / 1.043 GB, free: 10.08 MB / 0.7169 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 5 * 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 (69): * Single equations (assignments): 69 * 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 0.0001489/1.094, allocations: 212.6 kB / 1.044 GB, free: 9.879 MB / 0.7169 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001413/1.094, allocations: 109 kB / 1.044 GB, free: 9.82 MB / 0.7169 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001264/1.095, allocations: 0.7414 MB / 1.044 GB, free: 9.504 MB / 0.7169 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.983e-06/1.095, allocations: 9.781 kB / 1.044 GB, free: 9.504 MB / 0.7169 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.28e-06/1.095, allocations: 4 kB / 1.044 GB, free: 9.5 MB / 0.7169 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0009442/1.096, allocations: 0.8973 MB / 1.045 GB, free: 8.801 MB / 0.7169 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002862/1.099, allocations: 2.249 MB / 1.048 GB, free: 7.172 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.236e-06/1.099, allocations: 5.062 kB / 1.048 GB, free: 7.172 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000665/1.1, allocations: 133.9 kB / 1.048 GB, free: 7.148 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (simulation): time 9.137e-06/1.1, allocations: 8.938 kB / 1.048 GB, free: 7.145 MB / 0.7169 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.529e-05/1.1, allocations: 19.72 kB / 1.048 GB, free: 7.137 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 6.863e-06/1.1, allocations: 11.81 kB / 1.048 GB, free: 7.133 MB / 0.7169 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.036e-06/1.1, allocations: 2.875 kB / 1.048 GB, free: 7.133 MB / 0.7169 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00165/1.102, allocations: 1.236 MB / 1.049 GB, free: 6.359 MB / 0.7169 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003831/1.102, allocations: 266 kB / 1.049 GB, free: 6.133 MB / 0.7169 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001272/1.102, allocations: 14.22 kB / 1.049 GB, free: 6.125 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006943/1.103, allocations: 39.33 kB / 1.049 GB, free: 6.105 MB / 0.7169 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001008/1.103, allocations: 61.2 kB / 1.049 GB, free: 6.07 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.237e-05/1.103, allocations: 24.36 kB / 1.049 GB, free: 6.062 MB / 0.7169 GB Notification: Performance of sorting global known variables: time 0.0006393/1.104, allocations: 0.5842 MB / 1.05 GB, free: 5.477 MB / 0.7169 GB Notification: Performance of sort global known variables: time 1.7e-07/1.104, allocations: 0 / 1.05 GB, free: 5.477 MB / 0.7169 GB Notification: Performance of remove unused functions: time 0.001127/1.105, allocations: 0.538 MB / 1.05 GB, free: 4.938 MB / 0.7169 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 14 * Number of states: 6 (spl.vol.dynBal.medium.Xi[1],spl.vol.dynBal.U,spl.vol.dynBal.m,senTem1.T,senTem2.T,senTem3.T) * 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 (60): * Single equations (assignments): 60 * 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 Backend phase and start with SimCode phase: time 0.002181/1.107, allocations: 1.914 MB / 1.052 GB, free: 2.984 MB / 0.7169 GB Notification: Performance of simCode: created initialization part: time 0.001695/1.109, allocations: 0.9421 MB / 1.053 GB, free: 2.066 MB / 0.7169 GB Notification: Performance of simCode: created event and clocks part: time 5.28e-06/1.109, allocations: 0 / 1.053 GB, free: 2.066 MB / 0.7169 GB Notification: Performance of simCode: created simulation system equations: time 0.0005018/1.109, allocations: 349 kB / 1.054 GB, free: 1.746 MB / 0.7169 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002544/1.112, allocations: 0.5907 MB / 1.054 GB, free: 1.164 MB / 0.7169 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01003/1.122, allocations: 7.636 MB / 1.062 GB, free: 9.355 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006434/1.123, allocations: 1.124 MB / 1.063 GB, free: 8.199 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.001008/1.124, allocations: 296 kB / 1.063 GB, free: 7.906 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00057/1.124, allocations: 415.3 kB / 1.063 GB, free: 7.504 MB / 0.7325 GB Notification: Performance of SimCode: time 8.21e-07/1.124, allocations: 0 / 1.063 GB, free: 7.504 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05614/1.18, allocations: 29.38 MB / 1.092 GB, free: 10.66 MB / 0.7637 GB Notification: Performance of buildModelFMU: Generate platform static: time 9.343/10.52, allocations: 19.7 kB / 1.092 GB, free: 10.64 MB / 0.7637 GB (rm -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction.sim & python3 -m fmpy simulate --output-file BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction_res.csv --start-time 0 --stop-time 100 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.04 BuildingSystems_BuildingSystems_Fluid_FixedResistances_Examples_FlowJunction.fmu > BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.FlowJunction.pipe 2>&1)