Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages.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/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-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: translateModel(IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages") translateModel(IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00169/0.00169, allocations: 112.9 kB / 17.08 MB, free: 5.988 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001739/0.001739, allocations: 193.8 kB / 18.02 MB, free: 5.078 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.347/1.347, allocations: 222.9 MB / 241.7 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7256/0.7256, allocations: 115.3 MB / 407.2 MB, free: 6.156 MB / 318.1 MB Notification: Performance of FrontEnd - loaded program: time 0.00123/0.00123, allocations: 63.42 kB / 0.5583 GB, free: 32.32 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1503/0.1515, allocations: 76.17 MB / 0.6327 GB, free: 4.414 MB / 478.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages): time 0.09153/0.2431, allocations: 97.29 MB / 0.7277 GB, free: 2.773 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.4203/0.6635, allocations: 33.41 MB / 0.7604 GB, free: 3.961 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.007069/0.6706, allocations: 162.8 kB / 0.7605 GB, free: 3.961 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.009633/0.6803, allocations: 3.075 MB / 0.7635 GB, free: 3.926 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.01512/0.6954, allocations: 5.127 MB / 0.7685 GB, free: 3.723 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.01108/0.7065, allocations: 4.143 MB / 0.7726 GB, free: 3.633 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.05356/0.7601, allocations: 38.46 MB / 0.8101 GB, free: 11.85 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.008363/0.7685, allocations: 3.678 MB / 0.8137 GB, free: 8.27 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01141/0.7799, allocations: 4.211 MB / 0.8178 GB, free: 4.379 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.006716/0.7867, allocations: 3.394 MB / 0.8211 GB, free: 1.211 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.002118/0.7888, allocations: 500 kB / 0.8216 GB, free: 0.7227 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.009074/0.7979, allocations: 2.965 MB / 0.8245 GB, free: 13.89 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.003464/0.8014, allocations: 2.367 MB / 0.8268 GB, free: 11.55 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.007676/0.8091, allocations: 3.466 MB / 0.8302 GB, free: 8.09 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.01737/0.8265, allocations: 10.33 MB / 0.8403 GB, free: 14.07 MB / 0.6231 GB Notification: Performance of FrontEnd - DAE generated: time 6.984e-06/0.8265, allocations: 0 / 0.8403 GB, free: 14.07 MB / 0.6231 GB Notification: Performance of FrontEnd: time 2.154e-06/0.8266, allocations: 0 / 0.8403 GB, free: 14.07 MB / 0.6231 GB Notification: Performance of Transformations before backend: time 0.0003537/0.8269, allocations: 4 kB / 0.8403 GB, free: 14.06 MB / 0.6231 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 533 * Number of variables: 533 Notification: Performance of Generate backend data structure: time 0.02046/0.8474, allocations: 7.579 MB / 0.8477 GB, free: 6.41 MB / 0.6231 GB Notification: Performance of prepare preOptimizeDAE: time 4.576e-05/0.8475, allocations: 12.03 kB / 0.8477 GB, free: 6.398 MB / 0.6231 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01238/0.8599, allocations: 2.075 MB / 0.8497 GB, free: 4.312 MB / 0.6231 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.02137/0.8813, allocations: 10.02 MB / 0.8595 GB, free: 10.36 MB / 0.6387 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003106/0.8816, allocations: 190.5 kB / 0.8597 GB, free: 10.17 MB / 0.6387 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001098/0.8827, allocations: 244 kB / 0.8599 GB, free: 9.934 MB / 0.6387 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01083/0.8936, allocations: 3.6 MB / 0.8635 GB, free: 6.191 MB / 0.6387 GB Notification: Performance of preOpt findStateOrder (simulation): time 5.809e-05/0.8937, allocations: 7.922 kB / 0.8635 GB, free: 6.184 MB / 0.6387 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003472/0.8941, allocations: 91.94 kB / 0.8636 GB, free: 6.094 MB / 0.6387 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.03e-05/0.8941, allocations: 52 kB / 0.8636 GB, free: 6.043 MB / 0.6387 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.007911/0.902, allocations: 2.791 MB / 0.8663 GB, free: 3.25 MB / 0.6387 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 0.02562/0.9277, allocations: 14.75 MB / 0.8807 GB, free: 4.008 MB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.006851/0.9346, allocations: 2.356 MB / 0.883 GB, free: 1.648 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002663/0.9373, allocations: 1.031 MB / 0.884 GB, free: 0.6172 MB / 0.6544 GB Notification: Performance of preOpt evalFunc (simulation): time 0.009723/0.947, allocations: 5.35 MB / 0.8893 GB, free: 10.99 MB / 0.67 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.003725/0.9508, allocations: 1.82 MB / 0.891 GB, free: 9.156 MB / 0.67 GB Notification: Performance of pre-optimization done (n=94): time 4.759e-06/0.9508, allocations: 4 kB / 0.891 GB, free: 9.152 MB / 0.67 GB Notification: Performance of matching and sorting (n=94): time 0.01027/0.9611, allocations: 3.472 MB / 0.8944 GB, free: 5.691 MB / 0.67 GB Notification: Performance of inlineWhenForInitialization (initialization): time 9.171e-05/0.9612, allocations: 145.5 kB / 0.8946 GB, free: 5.52 MB / 0.67 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01579/0.977, allocations: 7.822 MB / 0.9022 GB, free: 13.73 MB / 0.6856 GB Notification: Performance of collectPreVariables (initialization): time 0.0005549/0.9776, allocations: 57.7 kB / 0.9023 GB, free: 13.67 MB / 0.6856 GB Notification: Performance of collectInitialEqns (initialization): time 0.003401/0.981, allocations: 2.692 MB / 0.9049 GB, free: 10.99 MB / 0.6856 GB Notification: Performance of collectInitialBindings (initialization): time 0.0007989/0.9819, allocations: 353 kB / 0.9052 GB, free: 10.65 MB / 0.6856 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002513/0.9844, allocations: 0.9269 MB / 0.9061 GB, free: 9.715 MB / 0.6856 GB Notification: Performance of setup shared object (initialization): time 0.0001067/0.9845, allocations: 309.1 kB / 0.9064 GB, free: 9.41 MB / 0.6856 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005038/0.9896, allocations: 2.849 MB / 0.9092 GB, free: 6.547 MB / 0.6856 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.006186/0.9958, allocations: 4.03 MB / 0.9132 GB, free: 2.043 MB / 0.6856 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.009657/1.005, allocations: 6.335 MB / 0.9193 GB, free: 11.33 MB / 0.7012 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.849e-05/1.006, allocations: 8 kB / 0.9193 GB, free: 11.32 MB / 0.7012 GB Notification: Performance of matching and sorting (n=523) (initialization): time 0.01502/1.021, allocations: 7.383 MB / 0.9266 GB, free: 3.934 MB / 0.7012 GB Notification: Performance of prepare postOptimizeDAE: time 4.578e-05/1.021, allocations: 16 kB / 0.9266 GB, free: 3.918 MB / 0.7012 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.462e-05/1.021, allocations: 28 kB / 0.9266 GB, free: 3.891 MB / 0.7012 GB Notification: Performance of postOpt tearingSystem (initialization): time 7.289e-05/1.021, allocations: 44 kB / 0.9266 GB, free: 3.848 MB / 0.7012 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00472/1.026, allocations: 0.8481 MB / 0.9275 GB, free: 3 MB / 0.7012 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00304/1.029, allocations: 3.269 MB / 0.9307 GB, free: 15.64 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005517/1.034, allocations: 0.5308 MB / 0.9312 GB, free: 15.1 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007371/1.035, allocations: 211.9 kB / 0.9314 GB, free: 14.89 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.007763/1.043, allocations: 3.896 MB / 0.9352 GB, free: 10.99 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.005774/1.048, allocations: 3.71 MB / 0.9388 GB, free: 6.805 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.00924/1.058, allocations: 5.676 MB / 0.9444 GB, free: 0.7461 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.74e-05/1.058, allocations: 11.94 kB / 0.9444 GB, free: 0.7344 MB / 0.7169 GB Notification: Performance of matching and sorting (n=523) (initialization_lambda0): time 0.01421/1.072, allocations: 6.706 MB / 0.9509 GB, free: 10.02 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 4.329e-05/1.072, allocations: 20 kB / 0.9509 GB, free: 10 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.394e-05/1.072, allocations: 28 kB / 0.951 GB, free: 9.977 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.935e-05/1.072, allocations: 48.72 kB / 0.951 GB, free: 9.93 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004283/1.077, allocations: 0.8776 MB / 0.9519 GB, free: 9.051 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.086e-05/1.077, allocations: 63.78 kB / 0.9519 GB, free: 8.988 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005504/1.082, allocations: 418.4 kB / 0.9523 GB, free: 8.578 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0008033/1.083, allocations: 207.9 kB / 0.9525 GB, free: 8.375 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 128 * Number of states: 0 () * Number of discrete variables: 6 ($PRE.integerTable.combiTimeTable.nextTimeEvent,$whenCondition1,integerTable.combiTimeTable.nextTimeEventScaled,$PRE.integerTable.combiTimeTable.nextTimeEventScaled,integerTable.combiTimeTable.nextTimeEvent,integerTable.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (364): * Single equations (assignments): 352 * Array equations: 4 * Algorithm blocks: 0 * Record equations: 4 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 4 systems {1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.001302/1.084, allocations: 375.6 kB / 0.9529 GB, free: 8 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002014/1.086, allocations: 0.5589 MB / 0.9534 GB, free: 7.434 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.009313/1.096, allocations: 3.212 MB / 0.9566 GB, free: 4.203 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.17e-05/1.096, allocations: 16 kB / 0.9566 GB, free: 4.188 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.927e-06/1.096, allocations: 7.938 kB / 0.9566 GB, free: 4.18 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.984e-05/1.096, allocations: 7.969 kB / 0.9566 GB, free: 4.172 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01784/1.114, allocations: 6.708 MB / 0.9631 GB, free: 13.45 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.009e-05/1.114, allocations: 0 / 0.9631 GB, free: 13.45 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002094/1.116, allocations: 343.7 kB / 0.9635 GB, free: 13.11 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004656/1.116, allocations: 209.5 kB / 0.9637 GB, free: 12.9 MB / 0.7481 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000176/1.117, allocations: 47.94 kB / 0.9637 GB, free: 12.85 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002113/1.119, allocations: 2.907 MB / 0.9666 GB, free: 9.848 MB / 0.7481 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.889e-06/1.119, allocations: 3.938 kB / 0.9666 GB, free: 9.844 MB / 0.7481 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.008123/1.127, allocations: 3.057 MB / 0.9695 GB, free: 6.754 MB / 0.7481 GB Notification: Performance of postOpt removeConstants (simulation): time 0.00312/1.13, allocations: 0.9809 MB / 0.9705 GB, free: 5.746 MB / 0.7481 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001874/1.132, allocations: 24 kB / 0.9705 GB, free: 5.723 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003988/1.136, allocations: 187.8 kB / 0.9707 GB, free: 5.539 MB / 0.7481 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002305/1.136, allocations: 88.83 kB / 0.9708 GB, free: 5.453 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002212/1.136, allocations: 71.92 kB / 0.9709 GB, free: 5.383 MB / 0.7481 GB Notification: Performance of sorting global known variables: time 0.01097/1.147, allocations: 5.317 MB / 0.976 GB, free: 104 kB / 0.7481 GB Notification: Performance of sort global known variables: time 6.21e-07/1.147, allocations: 0 / 0.976 GB, free: 104 kB / 0.7481 GB Notification: Performance of remove unused functions: time 0.0101/1.157, allocations: 2.348 MB / 0.9783 GB, free: 13.75 MB / 0.7637 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 0 () * Number of discrete variables: 4 ($whenCondition1,integerTable.y,integerTable.combiTimeTable.nextTimeEvent,integerTable.combiTimeTable.nextTimeEventScaled) * Number of discrete states: 2 (integerTable.combiTimeTable.nextTimeEvent,integerTable.combiTimeTable.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (117): * Single equations (assignments): 101 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 10 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems 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): 2 systems {(1,1), (1,1)} Notification: Performance of Backend phase and start with SimCode phase: time 0.003262/1.161, allocations: 1.124 MB / 0.9794 GB, free: 12.84 MB / 0.7637 GB Notification: Performance of simCode: created initialization part: time 0.01602/1.177, allocations: 7.936 MB / 0.9872 GB, free: 4.934 MB / 0.7637 GB Notification: Performance of simCode: created event and clocks part: time 9.067e-06/1.177, allocations: 0 / 0.9872 GB, free: 4.934 MB / 0.7637 GB Notification: Performance of simCode: created simulation system equations: time 0.003473/1.18, allocations: 1.185 MB / 0.9883 GB, free: 3.754 MB / 0.7637 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01494/1.195, allocations: 3.109 MB / 0.9914 GB, free: 0.7305 MB / 0.7637 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02248/1.218, allocations: 10.33 MB / 1.001 GB, free: 6.375 MB / 0.7794 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003914/1.222, allocations: 3.294 MB / 1.005 GB, free: 3.059 MB / 0.7794 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.002122/1.224, allocations: 475.2 kB / 1.005 GB, free: 2.594 MB / 0.7794 GB Notification: Performance of SimCode: time 8.52e-07/1.224, allocations: 3.938 kB / 1.005 GB, free: 2.59 MB / 0.7794 GB Notification: Performance of Templates: time 0.5328/1.757, allocations: 201.2 MB / 1.202 GB, free: 204.9 MB / 0.8262 GB make -j1 -f IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages.makefile (rm -f IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages.pipe ; mkfifo IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages.pipe >> ../files/IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages.sim & ./IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Obsolete.Fluid.Movers.Examples.MoverStages.pipe 2>&1)