Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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(Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector") translateModel(Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001628/0.001628, allocations: 100.9 kB / 16.27 MB, free: 6.418 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001399/0.001399, allocations: 189.8 kB / 17.2 MB, free: 5.953 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.439/1.439, allocations: 205.1 MB / 223.1 MB, free: 12.3 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.785/1.785, allocations: 292.3 MB / 0.5495 GB, free: 17.56 MB / 462.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001447/0.001447, allocations: 72.22 kB / 0.6722 GB, free: 6.523 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2445/0.2459, allocations: 114.5 MB / 0.784 GB, free: 3.859 MB / 0.6544 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector): time 0.4946/0.7406, allocations: 41.97 MB / 0.825 GB, free: 22.79 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.01485/0.7555, allocations: 8.829 MB / 0.8336 GB, free: 16.52 MB / 0.6544 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.00268/0.7582, allocations: 37.19 kB / 0.8337 GB, free: 16.51 MB / 0.6544 GB Notification: Performance of NFTyping.typeComponents: time 0.002341/0.7606, allocations: 0.5766 MB / 0.8342 GB, free: 16.16 MB / 0.6544 GB Notification: Performance of NFTyping.typeBindings: time 0.004974/0.7656, allocations: 1.258 MB / 0.8355 GB, free: 15.39 MB / 0.6544 GB Notification: Performance of NFTyping.typeClassSections: time 0.004036/0.7697, allocations: 1.193 MB / 0.8366 GB, free: 14.75 MB / 0.6544 GB Notification: Performance of NFFlatten.flatten: time 0.004928/0.7746, allocations: 2.668 MB / 0.8392 GB, free: 13.43 MB / 0.6544 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001641/0.7763, allocations: 0.928 MB / 0.8401 GB, free: 13.02 MB / 0.6544 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00337/0.7797, allocations: 1.043 MB / 0.8412 GB, free: 12.49 MB / 0.6544 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001546/0.7812, allocations: 0.7477 MB / 0.8419 GB, free: 12.12 MB / 0.6544 GB Notification: Performance of NFPackage.collectConstants: time 0.0002438/0.7815, allocations: 122.2 kB / 0.842 GB, free: 12.12 MB / 0.6544 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004084/0.7856, allocations: 1.18 MB / 0.8432 GB, free: 11.73 MB / 0.6544 GB Notification: Performance of NFScalarize.scalarize: time 0.0005276/0.7861, allocations: 323.8 kB / 0.8435 GB, free: 11.55 MB / 0.6544 GB Notification: Performance of NFVerifyModel.verify: time 0.00106/0.7872, allocations: 0.6411 MB / 0.8441 GB, free: 11.14 MB / 0.6544 GB Notification: Performance of NFConvertDAE.convert: time 0.005381/0.7926, allocations: 2.331 MB / 0.8464 GB, free: 10.3 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 7.334e-06/0.7926, allocations: 1.188 kB / 0.8464 GB, free: 10.3 MB / 0.6544 GB Notification: Performance of FrontEnd: time 3.577e-06/0.7926, allocations: 0 / 0.8464 GB, free: 10.3 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 5.148e-05/0.7927, allocations: 4 kB / 0.8464 GB, free: 10.3 MB / 0.6544 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 157 * Number of variables: 157 Notification: Performance of Generate backend data structure: time 0.00416/0.7969, allocations: 1.735 MB / 0.8481 GB, free: 9.008 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 5.809e-05/0.7969, allocations: 8.656 kB / 0.8481 GB, free: 9.008 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0004/0.7973, allocations: 140.4 kB / 0.8482 GB, free: 8.941 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001894/0.7992, allocations: 1.046 MB / 0.8492 GB, free: 8.258 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.758e-05/0.7993, allocations: 49.75 kB / 0.8493 GB, free: 8.238 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000127/0.7994, allocations: 68.34 kB / 0.8493 GB, free: 8.219 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00158/0.801, allocations: 0.811 MB / 0.8501 GB, free: 7.859 MB / 0.6544 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.462e-05/0.8011, allocations: 0.6094 kB / 0.8501 GB, free: 7.859 MB / 0.6544 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.686e-05/0.8011, allocations: 28.25 kB / 0.8502 GB, free: 7.84 MB / 0.6544 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.49e-05/0.8012, allocations: 15.88 kB / 0.8502 GB, free: 7.84 MB / 0.6544 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001188/0.8024, allocations: 0.609 MB / 0.8508 GB, free: 7.613 MB / 0.6544 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 0.004985/0.8074, allocations: 3.237 MB / 0.8539 GB, free: 5.445 MB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0008878/0.8083, allocations: 456.5 kB / 0.8544 GB, free: 5.27 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005239/0.8088, allocations: 315.6 kB / 0.8547 GB, free: 5.156 MB / 0.6544 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0007759/0.8096, allocations: 0.7658 MB / 0.8554 GB, free: 4.301 MB / 0.6544 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.629e-05/0.8096, allocations: 45.38 kB / 0.8555 GB, free: 4.25 MB / 0.6544 GB Notification: Performance of pre-optimization done (n=38): time 2.425e-06/0.8096, allocations: 1.094 kB / 0.8555 GB, free: 4.25 MB / 0.6544 GB Notification: Performance of matching and sorting (n=38): time 0.001948/0.8116, allocations: 0.9882 MB / 0.8564 GB, free: 3.809 MB / 0.6544 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.008e-05/0.8117, allocations: 145.8 kB / 0.8566 GB, free: 3.645 MB / 0.6544 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001671/0.8134, allocations: 1.081 MB / 0.8576 GB, free: 3.188 MB / 0.6544 GB Notification: Performance of collectPreVariables (initialization): time 6.428e-05/0.8134, allocations: 39.31 kB / 0.8577 GB, free: 3.148 MB / 0.6544 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004319/0.8139, allocations: 465.1 kB / 0.8581 GB, free: 2.789 MB / 0.6544 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001471/0.814, allocations: 134.8 kB / 0.8582 GB, free: 2.684 MB / 0.6544 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002217/0.8142, allocations: 114.3 kB / 0.8583 GB, free: 2.629 MB / 0.6544 GB Notification: Performance of setup shared object (initialization): time 8.042e-05/0.8143, allocations: 332.7 kB / 0.8587 GB, free: 2.312 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005506/0.8149, allocations: 348.8 kB / 0.859 GB, free: 2.188 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006769/0.8156, allocations: 456 kB / 0.8594 GB, free: 1.961 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001227/0.8168, allocations: 0.9657 MB / 0.8604 GB, free: 1.336 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.427e-06/0.8168, allocations: 4.719 kB / 0.8604 GB, free: 1.332 MB / 0.6544 GB Notification: Performance of matching and sorting (n=62) (initialization): time 0.001771/0.8186, allocations: 1.104 MB / 0.8615 GB, free: 0.7695 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001094/0.8187, allocations: 186.7 kB / 0.8616 GB, free: 0.5742 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.058e-05/0.8187, allocations: 1.156 kB / 0.8616 GB, free: 0.5742 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.532e-05/0.8188, allocations: 5.844 kB / 0.8616 GB, free: 0.5742 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000388/0.8192, allocations: 95.44 kB / 0.8617 GB, free: 0.5625 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.456e-05/0.8192, allocations: 3.531 kB / 0.8617 GB, free: 0.5625 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007822/0.82, allocations: 83.91 kB / 0.8618 GB, free: 0.5195 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.537e-05/0.8201, allocations: 23.06 kB / 0.8618 GB, free: 0.5156 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001063/0.8211, allocations: 0.5911 MB / 0.8624 GB, free: 228 kB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0007181/0.8219, allocations: 456.4 kB / 0.8629 GB, free: 15.99 MB / 0.67 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001383/0.8233, allocations: 0.9718 MB / 0.8638 GB, free: 15.36 MB / 0.67 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.204e-06/0.8233, allocations: 0 / 0.8638 GB, free: 15.36 MB / 0.67 GB Notification: Performance of matching and sorting (n=62) (initialization_lambda0): time 0.001863/0.8251, allocations: 1.102 MB / 0.8649 GB, free: 14.71 MB / 0.67 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001382/0.8253, allocations: 190.5 kB / 0.8651 GB, free: 14.51 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.23e-06/0.8253, allocations: 1.312 kB / 0.8651 GB, free: 14.51 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (initialization): time 7.724e-06/0.8253, allocations: 4.031 kB / 0.8651 GB, free: 14.51 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003534/0.8257, allocations: 91.08 kB / 0.8651 GB, free: 14.49 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.576e-06/0.8257, allocations: 4.188 kB / 0.8652 GB, free: 14.49 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007488/0.8265, allocations: 61.7 kB / 0.8652 GB, free: 14.45 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.092e-05/0.8265, allocations: 29.98 kB / 0.8652 GB, free: 14.44 MB / 0.67 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 (con.mod.airFlo_mod.i,con.mod.watFlo_mod.i,con.mod.temDif_mod.i) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (53): * Single equations (assignments): 47 * Array equations: 0 * Algorithm blocks: 6 * 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 0.000344/0.8269, allocations: 303.7 kB / 0.8655 GB, free: 14.14 MB / 0.67 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002098/0.8271, allocations: 104.4 kB / 0.8656 GB, free: 14.08 MB / 0.67 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001737/0.8288, allocations: 0.9209 MB / 0.8665 GB, free: 13.53 MB / 0.67 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.538e-05/0.8289, allocations: 3.406 kB / 0.8665 GB, free: 13.53 MB / 0.67 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.61e-06/0.8289, allocations: 1.125 kB / 0.8665 GB, free: 13.53 MB / 0.67 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001311/0.8302, allocations: 0.9769 MB / 0.8675 GB, free: 12.8 MB / 0.67 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003791/0.834, allocations: 2.109 MB / 0.8695 GB, free: 11.21 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.965e-06/0.834, allocations: 6.125 kB / 0.8696 GB, free: 11.21 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003005/0.8343, allocations: 72.58 kB / 0.8696 GB, free: 11.19 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.134e-05/0.8344, allocations: 5.5 kB / 0.8696 GB, free: 11.19 MB / 0.67 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.625e-05/0.8344, allocations: 12.94 kB / 0.8696 GB, free: 11.18 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.107e-05/0.8344, allocations: 11.84 kB / 0.8697 GB, free: 11.18 MB / 0.67 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.509e-06/0.8344, allocations: 2.875 kB / 0.8697 GB, free: 11.18 MB / 0.67 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002328/0.8368, allocations: 1.404 MB / 0.871 GB, free: 10.3 MB / 0.67 GB Notification: Performance of postOpt removeConstants (simulation): time 0.00054/0.8373, allocations: 280.1 kB / 0.8713 GB, free: 10.05 MB / 0.67 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001547/0.8375, allocations: 15.75 kB / 0.8713 GB, free: 10.04 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004956/0.838, allocations: 30.95 kB / 0.8713 GB, free: 10.03 MB / 0.67 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000182/0.8382, allocations: 42.39 kB / 0.8714 GB, free: 10.01 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.261e-05/0.8383, allocations: 26.08 kB / 0.8714 GB, free: 10 MB / 0.67 GB Notification: Performance of sorting global known variables: time 0.00137/0.8396, allocations: 0.7779 MB / 0.8722 GB, free: 9.551 MB / 0.67 GB Notification: Performance of sort global known variables: time 1.7e-07/0.8396, allocations: 3.094 kB / 0.8722 GB, free: 9.551 MB / 0.67 GB Notification: Performance of remove unused functions: time 0.002078/0.8417, allocations: 0.5247 MB / 0.8727 GB, free: 9.445 MB / 0.67 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 10 * Number of states: 2 (con.hex.vol.dynBal.U,senTem.T) * Number of discrete variables: 3 (con.mod.temDif_mod.i,con.mod.watFlo_mod.i,con.mod.airFlo_mod.i) * Number of discrete states: 3 (con.mod.airFlo_mod.i,con.mod.watFlo_mod.i,con.mod.temDif_mod.i) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (38): * Single equations (assignments): 31 * Array equations: 0 * Algorithm blocks: 3 * Record equations: 4 * 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 0.001096/0.8428, allocations: 413.3 kB / 0.8731 GB, free: 9.223 MB / 0.67 GB Notification: Performance of simCode: created initialization part: time 0.003074/0.8459, allocations: 1.964 MB / 0.875 GB, free: 7.84 MB / 0.67 GB Notification: Performance of simCode: created event and clocks part: time 5.991e-06/0.8459, allocations: 4.188 kB / 0.875 GB, free: 7.836 MB / 0.67 GB Notification: Performance of simCode: created simulation system equations: time 0.0008074/0.8468, allocations: 0.5402 MB / 0.8755 GB, free: 7.465 MB / 0.67 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002732/0.8495, allocations: 0.5428 MB / 0.8761 GB, free: 7.238 MB / 0.67 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004019/0.8535, allocations: 1.974 MB / 0.878 GB, free: 5.961 MB / 0.67 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009321/0.8545, allocations: 1.068 MB / 0.879 GB, free: 5.074 MB / 0.67 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002659/0.8547, allocations: 77.73 kB / 0.8791 GB, free: 5.059 MB / 0.67 GB Notification: Performance of SimCode: time 1.724e-06/0.8548, allocations: 1.219 kB / 0.8791 GB, free: 5.059 MB / 0.67 GB Notification: Performance of Templates: time 0.04066/0.8954, allocations: 19.52 MB / 0.8982 GB, free: 4.938 MB / 0.6856 GB make -j1 -f Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector.makefile (rm -f Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector.pipe ; mkfifo Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector.pipe >> ../files/Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector.sim & ./Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.HeatExchangers.ActiveBeams.BaseClasses.Examples.Convector.pipe 2>&1)