Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva.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: translateModel(BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva") translateModel(BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00437/0.00437, allocations: 100.7 kB / 15.73 MB, free: 6.039 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001133/0.001133, allocations: 188.9 kB / 16.67 MB, free: 5.973 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.319/1.319, allocations: 222.9 MB / 240.4 MB, free: 4.18 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 0.9367/0.9367, allocations: 143 MB / 433.6 MB, free: 11.39 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001157/0.001157, allocations: 63.91 kB / 0.5955 GB, free: 8.406 MB / 0.4981 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4368/0.438, allocations: 82.03 MB / 0.6756 GB, free: 1.492 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva): time 0.05722/0.4952, allocations: 61.16 MB / 0.7353 GB, free: 9.176 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.0179/0.5132, allocations: 12 MB / 0.7471 GB, free: 13.14 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002309/0.5155, allocations: 59.62 kB / 0.7471 GB, free: 13.09 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.002011/0.5176, allocations: 0.6831 MB / 0.7478 GB, free: 12.4 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.005111/0.5227, allocations: 1.963 MB / 0.7497 GB, free: 10.43 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.002855/0.5256, allocations: 1.207 MB / 0.7509 GB, free: 9.227 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.003861/0.5295, allocations: 3.088 MB / 0.7539 GB, free: 6.137 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001299/0.5308, allocations: 1.094 MB / 0.755 GB, free: 5.008 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002898/0.5337, allocations: 1.346 MB / 0.7563 GB, free: 3.656 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001174/0.5349, allocations: 0.8983 MB / 0.7571 GB, free: 2.754 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.000166/0.535, allocations: 116 kB / 0.7573 GB, free: 2.641 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003137/0.5382, allocations: 1.45 MB / 0.7587 GB, free: 1.188 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.0003052/0.5385, allocations: 286.9 kB / 0.759 GB, free: 0.9062 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.0007254/0.5392, allocations: 0.6959 MB / 0.7596 GB, free: 212 kB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.003053/0.5423, allocations: 2.41 MB / 0.762 GB, free: 13.79 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 3.847e-06/0.5423, allocations: 0 / 0.762 GB, free: 13.79 MB / 0.5919 GB Notification: Performance of FrontEnd: time 2.024e-06/0.5423, allocations: 0 / 0.762 GB, free: 13.79 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 1.767e-05/0.5424, allocations: 4 kB / 0.762 GB, free: 13.79 MB / 0.5919 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 0.002657/0.545, allocations: 1.726 MB / 0.7637 GB, free: 12 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 3.249e-05/0.5451, allocations: 8.031 kB / 0.7637 GB, free: 12 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002041/0.5471, allocations: 410.8 kB / 0.7641 GB, free: 11.59 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001923/0.549, allocations: 1.175 MB / 0.7652 GB, free: 10.36 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.352e-05/0.5491, allocations: 65.94 kB / 0.7653 GB, free: 10.3 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001131/0.5492, allocations: 80 kB / 0.7654 GB, free: 10.22 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001884/0.5511, allocations: 0.9898 MB / 0.7663 GB, free: 9.168 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.659e-05/0.5511, allocations: 3.938 kB / 0.7663 GB, free: 9.164 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.657e-05/0.5512, allocations: 40 kB / 0.7664 GB, free: 9.125 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.965e-05/0.5513, allocations: 23.98 kB / 0.7664 GB, free: 9.102 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002066/0.5533, allocations: 0.843 MB / 0.7672 GB, free: 8.262 MB / 0.5919 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 0.005908/0.5592, allocations: 5.232 MB / 0.7723 GB, free: 2.652 MB / 0.5919 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003216/0.5625, allocations: 0.7725 MB / 0.7731 GB, free: 1.871 MB / 0.5919 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006674/0.5632, allocations: 296.7 kB / 0.7734 GB, free: 1.578 MB / 0.5919 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0006358/0.5638, allocations: 0.9025 MB / 0.7742 GB, free: 484 kB / 0.5919 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.306e-05/0.5638, allocations: 34.56 kB / 0.7743 GB, free: 440 kB / 0.5919 GB Notification: Performance of pre-optimization done (n=43): time 2.194e-06/0.5639, allocations: 0 / 0.7743 GB, free: 440 kB / 0.5919 GB Notification: Performance of matching and sorting (n=43): time 0.006822/0.5707, allocations: 1.69 MB / 0.7759 GB, free: 14.71 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.571e-05/0.5707, allocations: 63.34 kB / 0.776 GB, free: 14.64 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001508/0.5723, allocations: 1.08 MB / 0.777 GB, free: 13.54 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 6.353e-05/0.5723, allocations: 37.64 kB / 0.7771 GB, free: 13.5 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003909/0.5727, allocations: 0.535 MB / 0.7776 GB, free: 12.96 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001226/0.5729, allocations: 149.8 kB / 0.7777 GB, free: 12.81 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002109/0.5731, allocations: 138.1 kB / 0.7779 GB, free: 12.67 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001135/0.5732, allocations: 333.9 kB / 0.7782 GB, free: 12.34 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008663/0.5741, allocations: 307.3 kB / 0.7785 GB, free: 12.04 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00103/0.5751, allocations: 0.529 MB / 0.779 GB, free: 11.41 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001592/0.5767, allocations: 0.7142 MB / 0.7797 GB, free: 10.62 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.002e-06/0.5767, allocations: 4 kB / 0.7797 GB, free: 10.62 MB / 0.6075 GB Notification: Performance of matching and sorting (n=71) (initialization): time 0.002548/0.5793, allocations: 1.008 MB / 0.7807 GB, free: 9.602 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 1.975e-05/0.5793, allocations: 8.031 kB / 0.7807 GB, free: 9.594 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.184e-05/0.5793, allocations: 8 kB / 0.7807 GB, free: 9.586 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001171/0.5805, allocations: 300.6 kB / 0.781 GB, free: 9.289 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005289/0.5811, allocations: 131.7 kB / 0.7811 GB, free: 9.16 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00134/0.5824, allocations: 0.8982 MB / 0.782 GB, free: 8.238 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001117/0.5835, allocations: 147.3 kB / 0.7821 GB, free: 8.094 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.537e-05/0.5836, allocations: 35.97 kB / 0.7822 GB, free: 8.059 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001128/0.5848, allocations: 0.5128 MB / 0.7827 GB, free: 7.539 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0009646/0.5857, allocations: 0.5251 MB / 0.7832 GB, free: 6.922 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001595/0.5873, allocations: 0.7063 MB / 0.7839 GB, free: 6.145 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.478e-06/0.5873, allocations: 4 kB / 0.7839 GB, free: 6.141 MB / 0.6075 GB Notification: Performance of matching and sorting (n=71) (initialization_lambda0): time 0.002518/0.5899, allocations: 0.9964 MB / 0.7848 GB, free: 5.133 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 1.202e-05/0.5899, allocations: 8 kB / 0.7849 GB, free: 5.125 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.69e-06/0.5899, allocations: 4 kB / 0.7849 GB, free: 5.121 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001029/0.5909, allocations: 304.6 kB / 0.7851 GB, free: 4.82 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000525/0.5915, allocations: 127.8 kB / 0.7853 GB, free: 4.695 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001319/0.5928, allocations: 0.9013 MB / 0.7862 GB, free: 3.77 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001123/0.5939, allocations: 131.6 kB / 0.7863 GB, free: 3.641 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.838e-05/0.594, allocations: 31.98 kB / 0.7863 GB, free: 3.609 MB / 0.6075 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 (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 0.0002154/0.5942, allocations: 216.1 kB / 0.7865 GB, free: 3.391 MB / 0.6075 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000169/0.5944, allocations: 118.6 kB / 0.7866 GB, free: 3.273 MB / 0.6075 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002209/0.5966, allocations: 0.9184 MB / 0.7875 GB, free: 2.34 MB / 0.6075 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.296e-05/0.5966, allocations: 7.984 kB / 0.7875 GB, free: 2.332 MB / 0.6075 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.372e-06/0.5967, allocations: 0 / 0.7875 GB, free: 2.332 MB / 0.6075 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.661e-06/0.5967, allocations: 3.938 kB / 0.7875 GB, free: 2.328 MB / 0.6075 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004722/0.6014, allocations: 2.15 MB / 0.7896 GB, free: 100 kB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.34e-06/0.6014, allocations: 0 / 0.7896 GB, free: 100 kB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002654/0.6017, allocations: 67.89 kB / 0.7897 GB, free: 32 kB / 0.6075 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009357/0.6026, allocations: 302.1 kB / 0.79 GB, free: 15.73 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.563e-05/0.6027, allocations: 15.94 kB / 0.79 GB, free: 15.72 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001313/0.604, allocations: 0.9225 MB / 0.7909 GB, free: 14.77 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.536e-06/0.604, allocations: 4 kB / 0.7909 GB, free: 14.77 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00344/0.6075, allocations: 1.152 MB / 0.792 GB, free: 13.57 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004082/0.6079, allocations: 263.5 kB / 0.7923 GB, free: 13.29 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001407/0.608, allocations: 12 kB / 0.7923 GB, free: 13.28 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000794/0.6088, allocations: 71.91 kB / 0.7924 GB, free: 13.21 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.326e-05/0.6089, allocations: 47.77 kB / 0.7924 GB, free: 13.16 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.594e-05/0.609, allocations: 19.98 kB / 0.7924 GB, free: 13.14 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.001114/0.6101, allocations: 0.759 MB / 0.7932 GB, free: 12.38 MB / 0.6231 GB Notification: Performance of sort global known variables: time 2e-07/0.6101, allocations: 0 / 0.7932 GB, free: 12.38 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.00144/0.6115, allocations: 0.5653 MB / 0.7937 GB, free: 11.81 MB / 0.6231 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 0.0007317/0.6123, allocations: 388.2 kB / 0.7941 GB, free: 11.43 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.003088/0.6154, allocations: 1.11 MB / 0.7952 GB, free: 10.32 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 3.958e-06/0.6154, allocations: 0 / 0.7952 GB, free: 10.32 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0008524/0.6163, allocations: 348 kB / 0.7955 GB, free: 9.984 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00224/0.6185, allocations: 0.5106 MB / 0.796 GB, free: 9.477 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005145/0.6237, allocations: 2.02 MB / 0.798 GB, free: 7.398 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006141/0.6243, allocations: 1.065 MB / 0.799 GB, free: 6.301 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.0008446/0.6252, allocations: 224.8 kB / 0.7992 GB, free: 6.078 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001881/0.6253, allocations: 71.42 kB / 0.7993 GB, free: 6.008 MB / 0.6231 GB Notification: Performance of SimCode: time 6.11e-07/0.6254, allocations: 4 kB / 0.7993 GB, free: 6.004 MB / 0.6231 GB Notification: Performance of Templates: time 0.03793/0.6633, allocations: 25.28 MB / 0.824 GB, free: 13.02 MB / 0.6544 GB make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva.makefile (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva.sim & ./BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildSysPro_BuildSysPro.IBPSA.Fluid.Chillers.Examples.Carnot_TEva.pipe 2>&1)