Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolume.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/BuildSysPro 3.6.0/package.mo", uses=false) Using package BuildSysPro with version 3.5.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/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(BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolume,fileNamePrefix="BuildSysPro_BuildSysPro_IBPSA_Fluid_MixingVolumes_Validation_MixingVolume",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolume,fileNamePrefix="BuildSysPro_BuildSysPro_IBPSA_Fluid_MixingVolumes_Validation_MixingVolume",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 0.0007033/0.0007034, allocations: 97.8 kB / 15.36 MB, free: 0.7344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.004083/0.004083, allocations: 170.2 kB / 16.27 MB, free: 6.652 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.174/1.174, allocations: 223.3 MB / 240.3 MB, free: 5.352 MB / 190.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/package.mo): time 0.8644/0.8644, allocations: 143.2 MB / 434.6 MB, free: 13.68 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.000264/0.000264, allocations: 11.98 kB / 0.5165 GB, free: 11.09 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1214/0.1217, allocations: 83.41 MB / 0.598 GB, free: 7.652 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolume): time 0.4142/0.5358, allocations: 237.4 MB / 0.8298 GB, free: 14.45 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.01912/0.555, allocations: 15.93 MB / 0.8453 GB, free: 14.48 MB / 0.67 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001749/0.5568, allocations: 71.5 kB / 0.8454 GB, free: 14.41 MB / 0.67 GB Notification: Performance of NFTyping.typeComponents: time 0.002395/0.5592, allocations: 1.014 MB / 0.8464 GB, free: 13.39 MB / 0.67 GB Notification: Performance of NFTyping.typeBindings: time 0.007344/0.5665, allocations: 3.603 MB / 0.8499 GB, free: 9.773 MB / 0.67 GB Notification: Performance of NFTyping.typeClassSections: time 0.003403/0.57, allocations: 1.628 MB / 0.8515 GB, free: 8.156 MB / 0.67 GB Notification: Performance of NFFlatten.flatten: time 0.006719/0.5767, allocations: 7.418 MB / 0.8587 GB, free: 0.7266 MB / 0.67 GB Notification: Performance of NFFlatten.resolveConnections: time 0.2854/0.8621, allocations: 1.37 MB / 0.8601 GB, free: 5.414 MB / 0.67 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004089/0.8662, allocations: 2.3 MB / 0.8623 GB, free: 5.414 MB / 0.67 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002233/0.8685, allocations: 1.738 MB / 0.864 GB, free: 5.41 MB / 0.67 GB Notification: Performance of NFPackage.collectConstants: time 0.0001747/0.8686, allocations: 84.06 kB / 0.8641 GB, free: 5.41 MB / 0.67 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003961/0.8726, allocations: 3.129 MB / 0.8672 GB, free: 5.406 MB / 0.67 GB Notification: Performance of NFScalarize.scalarize: time 0.0005338/0.8731, allocations: 0.6765 MB / 0.8678 GB, free: 5.406 MB / 0.67 GB Notification: Performance of NFVerifyModel.verify: time 0.001057/0.8742, allocations: 1.058 MB / 0.8688 GB, free: 21.38 MB / 0.6856 GB Notification: Performance of NFConvertDAE.convert: time 0.003151/0.8774, allocations: 3.703 MB / 0.8725 GB, free: 21.28 MB / 0.6856 GB Notification: Performance of FrontEnd - DAE generated: time 2.635e-06/0.8774, allocations: 1.859 kB / 0.8725 GB, free: 21.28 MB / 0.6856 GB Notification: Performance of FrontEnd: time 1.503e-06/0.8774, allocations: 0 / 0.8725 GB, free: 21.28 MB / 0.6856 GB Notification: Performance of Transformations before backend: time 1.811e-05/0.8774, allocations: 0 / 0.8725 GB, free: 21.28 MB / 0.6856 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 363 * Number of variables: 363 Notification: Performance of Generate backend data structure: time 0.00286/0.8803, allocations: 2.127 MB / 0.8745 GB, free: 20.18 MB / 0.6856 GB Notification: Performance of prepare preOptimizeDAE: time 3.101e-05/0.8803, allocations: 10.19 kB / 0.8745 GB, free: 20.18 MB / 0.6856 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002138/0.8805, allocations: 217.6 kB / 0.8748 GB, free: 20.13 MB / 0.6856 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002484/0.883, allocations: 0.5034 MB / 0.8752 GB, free: 20.02 MB / 0.6856 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001491/0.8845, allocations: 1.278 MB / 0.8765 GB, free: 19.57 MB / 0.6856 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001139/0.8847, allocations: 180.2 kB / 0.8767 GB, free: 19.5 MB / 0.6856 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001773/0.8848, allocations: 147.4 kB / 0.8768 GB, free: 19.5 MB / 0.6856 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002283/0.8871, allocations: 1.746 MB / 0.8785 GB, free: 19.27 MB / 0.6856 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.194e-05/0.8872, allocations: 10.22 kB / 0.8785 GB, free: 19.27 MB / 0.6856 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001202/0.8873, allocations: 58.22 kB / 0.8786 GB, free: 19.27 MB / 0.6856 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.149e-05/0.8874, allocations: 63.19 kB / 0.8786 GB, free: 19.27 MB / 0.6856 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002057/0.8894, allocations: 1.392 MB / 0.88 GB, free: 19.25 MB / 0.6856 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 0.007661/0.8971, allocations: 8.21 MB / 0.888 GB, free: 14.42 MB / 0.6856 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001484/0.8986, allocations: 0.9106 MB / 0.8889 GB, free: 14.39 MB / 0.6856 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008569/0.8994, allocations: 0.5452 MB / 0.8894 GB, free: 14.38 MB / 0.6856 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005673/0.9, allocations: 345.7 kB / 0.8898 GB, free: 14.09 MB / 0.6856 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.746e-05/0.9001, allocations: 43.69 kB / 0.8898 GB, free: 14.05 MB / 0.6856 GB Notification: Performance of pre-optimization done (n=96): time 2.274e-06/0.9001, allocations: 3.938 kB / 0.8898 GB, free: 14.05 MB / 0.6856 GB Notification: Performance of matching and sorting (n=102): time 0.006146/0.9062, allocations: 3.175 MB / 0.8929 GB, free: 13.4 MB / 0.6856 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.212e-05/0.9063, allocations: 68.81 kB / 0.893 GB, free: 13.34 MB / 0.6856 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001354/0.9076, allocations: 1.26 MB / 0.8942 GB, free: 13.17 MB / 0.6856 GB Notification: Performance of collectPreVariables (initialization): time 7.858e-05/0.9077, allocations: 51.3 kB / 0.8943 GB, free: 13.14 MB / 0.6856 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004089/0.9081, allocations: 0.8143 MB / 0.8951 GB, free: 12.82 MB / 0.6856 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002049/0.9084, allocations: 364.7 kB / 0.8954 GB, free: 12.59 MB / 0.6856 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001153/0.9085, allocations: 100 kB / 0.8955 GB, free: 12.57 MB / 0.6856 GB Notification: Performance of setup shared object (initialization): time 0.0001138/0.9086, allocations: 360.1 kB / 0.8958 GB, free: 12.27 MB / 0.6856 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007673/0.9094, allocations: 444.5 kB / 0.8963 GB, free: 12.26 MB / 0.6856 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009102/0.9103, allocations: 0.8389 MB / 0.8971 GB, free: 11.81 MB / 0.6856 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001622/0.9119, allocations: 1.268 MB / 0.8983 GB, free: 11.46 MB / 0.6856 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.541e-06/0.9119, allocations: 4.984 kB / 0.8983 GB, free: 11.46 MB / 0.6856 GB Notification: Performance of matching and sorting (n=150) (initialization): time 0.002142/0.9141, allocations: 1.422 MB / 0.8997 GB, free: 11.33 MB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001208/0.9142, allocations: 367.8 kB / 0.9001 GB, free: 10.91 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.388e-05/0.9142, allocations: 9.438 kB / 0.9001 GB, free: 10.91 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.314e-05/0.9143, allocations: 15.72 kB / 0.9001 GB, free: 10.91 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001008/0.9153, allocations: 282.2 kB / 0.9004 GB, free: 10.91 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.053e-05/0.9153, allocations: 18.22 kB / 0.9004 GB, free: 10.91 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001361/0.9167, allocations: 187.6 kB / 0.9006 GB, free: 10.88 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.34e-05/0.9168, allocations: 49.48 kB / 0.9006 GB, free: 10.88 MB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 6.261e-06/0.9168, allocations: 5.594 kB / 0.9006 GB, free: 10.88 MB / 0.6856 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.00189/0.9187, allocations: 1.24 MB / 0.9018 GB, free: 10.86 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.101e-05/0.9187, allocations: 8.594 kB / 0.9018 GB, free: 10.86 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.345e-05/0.9187, allocations: 15.41 kB / 0.9018 GB, free: 10.86 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009834/0.9197, allocations: 286.9 kB / 0.9021 GB, free: 10.86 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.802e-05/0.9197, allocations: 17.66 kB / 0.9021 GB, free: 10.86 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001272/0.921, allocations: 178.6 kB / 0.9023 GB, free: 10.84 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.802e-05/0.9211, allocations: 52.55 kB / 0.9024 GB, free: 10.84 MB / 0.6856 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 41 * Number of states: 0 () * Number of discrete variables: 4 (vol.regularFlow[1],vol.regularFlow[2],vol.inFlow[2],vol.inFlow[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (150): * Single equations (assignments): 150 * 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 0.0005962/0.9217, allocations: 0.5103 MB / 0.9028 GB, free: 10.64 MB / 0.6856 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001947/0.9219, allocations: 163.2 kB / 0.903 GB, free: 10.55 MB / 0.6856 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001929/0.9238, allocations: 1.182 MB / 0.9042 GB, free: 10.45 MB / 0.6856 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.026e-05/0.9238, allocations: 9.094 kB / 0.9042 GB, free: 10.45 MB / 0.6856 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.761e-06/0.9239, allocations: 3.281 kB / 0.9042 GB, free: 10.45 MB / 0.6856 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00155/0.9254, allocations: 1.097 MB / 0.9052 GB, free: 10.18 MB / 0.6856 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003798/0.9292, allocations: 2.804 MB / 0.908 GB, free: 9.777 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.819e-06/0.9292, allocations: 2.844 kB / 0.908 GB, free: 9.777 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001053/0.9303, allocations: 252.4 kB / 0.9082 GB, free: 9.773 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (simulation): time 7.864e-06/0.9303, allocations: 9.625 kB / 0.9082 GB, free: 9.77 MB / 0.6856 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.677e-05/0.9304, allocations: 27.55 kB / 0.9083 GB, free: 9.77 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 6.412e-06/0.9304, allocations: 5.781 kB / 0.9083 GB, free: 9.77 MB / 0.6856 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.766e-06/0.9304, allocations: 4.906 kB / 0.9083 GB, free: 9.77 MB / 0.6856 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002368/0.9328, allocations: 1.793 MB / 0.91 GB, free: 9.449 MB / 0.6856 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004184/0.9332, allocations: 342.3 kB / 0.9103 GB, free: 9.273 MB / 0.6856 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000159/0.9334, allocations: 26.22 kB / 0.9104 GB, free: 9.27 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001103/0.9345, allocations: 144.8 kB / 0.9105 GB, free: 9.246 MB / 0.6856 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001126/0.9346, allocations: 62.8 kB / 0.9106 GB, free: 9.246 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.009e-05/0.9347, allocations: 49.47 kB / 0.9106 GB, free: 9.242 MB / 0.6856 GB Notification: Performance of sorting global known variables: time 0.0007802/0.9354, allocations: 0.8397 MB / 0.9114 GB, free: 9.133 MB / 0.6856 GB Notification: Performance of sort global known variables: time 1.2e-07/0.9354, allocations: 0 / 0.9114 GB, free: 9.133 MB / 0.6856 GB Notification: Performance of remove unused functions: time 0.001558/0.937, allocations: 0.7659 MB / 0.9122 GB, free: 9.129 MB / 0.6856 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 9 (vol1.dynBal.medium.Xi[1],vol1.dynBal.U,vol1.dynBal.m,vol.medium.Xi[1],vol.medium.T,vol.m,vol2.dynBal.medium.Xi[1],vol2.dynBal.U,vol2.dynBal.m) * 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 (102): * Single equations (assignments): 102 * 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 0.002841/0.9399, allocations: 2.525 MB / 0.9147 GB, free: 8.258 MB / 0.6856 GB Notification: Performance of simCode: created initialization part: time 0.002356/0.9422, allocations: 1.755 MB / 0.9164 GB, free: 8.219 MB / 0.6856 GB Notification: Performance of simCode: created event and clocks part: time 2.776e-06/0.9422, allocations: 1.125 kB / 0.9164 GB, free: 8.219 MB / 0.6856 GB Notification: Performance of simCode: created simulation system equations: time 0.000748/0.943, allocations: 0.5274 MB / 0.9169 GB, free: 8.211 MB / 0.6856 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004369/0.9474, allocations: 0.9675 MB / 0.9178 GB, free: 8.164 MB / 0.6856 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01567/0.9631, allocations: 13.96 MB / 0.9315 GB, free: 2.121 MB / 0.6856 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007645/0.9638, allocations: 1.444 MB / 0.9329 GB, free: 1.371 MB / 0.6856 GB Notification: Performance of simCode: alias equations: time 0.001688/0.9655, allocations: 0.5613 MB / 0.9334 GB, free: 1.262 MB / 0.6856 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006401/0.9662, allocations: 0.6861 MB / 0.9341 GB, free: 1.254 MB / 0.6856 GB Notification: Performance of SimCode: time 3.41e-07/0.9662, allocations: 3.344 kB / 0.9341 GB, free: 1.254 MB / 0.6856 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 1.527/2.493, allocations: 43.43 MB / 0.9765 GB, free: 14.75 MB / 0.7325 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001972/2.494, allocations: 254.2 kB / 0.9767 GB, free: 14.5 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate platform static: time 3.333/5.827, allocations: 0 / 0.9767 GB, free: 14.5 MB / 0.7325 GB (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolume.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolume.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolume.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolume.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_BuildSysPro_BuildSysPro_IBPSA_Fluid_MixingVolumes_Validation_MixingVolume_fmu --startTime=0 --stopTime=2 --timeout=50 --tolerance=1e-09 BuildSysPro_BuildSysPro_IBPSA_Fluid_MixingVolumes_Validation_MixingVolume.fmu > BuildSysPro_BuildSysPro.IBPSA.Fluid.MixingVolumes.Validation.MixingVolume.pipe 2>&1)