Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier.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/Annex60 1.0.0/package.mo", uses=false) Using package Annex60 with version 1.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/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(Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier") translateModel(Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.007516/0.007516, allocations: 96.7 kB / 15.73 MB, free: 6.055 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001695/0.001695, allocations: 194.2 kB / 16.67 MB, free: 5.977 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.619/1.619, allocations: 205.1 MB / 222.6 MB, free: 4.516 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/package.mo): time 0.3977/0.3977, allocations: 54.95 MB / 324.9 MB, free: 52 kB / 254.1 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: Annex60 requested package Modelica of version 3.2.2. Modelica 3.2.3 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001592/0.001592, allocations: 72.38 kB / 456.3 MB, free: 38.37 MB / 382.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1555/0.1571, allocations: 59.59 MB / 0.5038 GB, free: 9.652 MB / 382.1 MB Notification: Performance of NFInst.instantiate(Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier): time 0.7111/0.8683, allocations: 274.8 MB / 0.7722 GB, free: 7.625 MB / 0.545 GB Notification: Performance of NFInst.instExpressions: time 0.02994/0.8983, allocations: 17.6 MB / 0.7893 GB, free: 5.965 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004418/0.9028, allocations: 67.62 kB / 0.7894 GB, free: 5.898 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.004539/0.9074, allocations: 1.22 MB / 0.7906 GB, free: 4.672 MB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.01267/0.9201, allocations: 3.183 MB / 0.7937 GB, free: 1.477 MB / 0.5606 GB Notification: Performance of NFTyping.typeClassSections: time 0.007639/0.9278, allocations: 2.315 MB / 0.796 GB, free: 15.17 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.00961/0.9374, allocations: 5.194 MB / 0.801 GB, free: 9.965 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004287/0.9417, allocations: 1.804 MB / 0.8028 GB, free: 8.133 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.007408/0.9492, allocations: 2.418 MB / 0.8052 GB, free: 5.707 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00463/0.9538, allocations: 1.657 MB / 0.8068 GB, free: 4.059 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.001022/0.9549, allocations: 215.9 kB / 0.807 GB, free: 3.848 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.008875/0.9638, allocations: 2.915 MB / 0.8098 GB, free: 0.9258 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.002257/0.9661, allocations: 0.7831 MB / 0.8106 GB, free: 144 kB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.004196/0.9703, allocations: 1.198 MB / 0.8118 GB, free: 14.93 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.01216/0.9825, allocations: 4.049 MB / 0.8157 GB, free: 10.88 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 6.502e-06/0.9826, allocations: 0 / 0.8157 GB, free: 10.88 MB / 0.5919 GB Notification: Performance of FrontEnd: time 2.274e-06/0.9826, allocations: 4 kB / 0.8157 GB, free: 10.88 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 0.0001521/0.9827, allocations: 0 / 0.8157 GB, free: 10.88 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: 351 * Number of variables: 351 Notification: Performance of Generate backend data structure: time 0.008016/0.9908, allocations: 2.708 MB / 0.8184 GB, free: 8.074 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 4.779e-05/0.9908, allocations: 12.03 kB / 0.8184 GB, free: 8.062 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005013/0.9958, allocations: 0.6389 MB / 0.819 GB, free: 7.422 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003478/0.9993, allocations: 1.445 MB / 0.8204 GB, free: 5.922 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001255/0.9995, allocations: 106.8 kB / 0.8205 GB, free: 5.816 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004319/0.9999, allocations: 159.9 kB / 0.8207 GB, free: 5.66 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004111/1.004, allocations: 1.847 MB / 0.8225 GB, free: 3.746 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.84e-05/1.004, allocations: 3.938 kB / 0.8225 GB, free: 3.742 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001841/1.004, allocations: 60 kB / 0.8225 GB, free: 3.684 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.772e-05/1.004, allocations: 50.61 kB / 0.8226 GB, free: 3.633 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003361/1.008, allocations: 1.517 MB / 0.8241 GB, free: 2.109 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 0.01093/1.019, allocations: 7.601 MB / 0.8315 GB, free: 9.922 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002234/1.021, allocations: 0.8577 MB / 0.8323 GB, free: 9.051 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006085/1.022, allocations: 378.5 kB / 0.8327 GB, free: 8.68 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 6.158e-05/1.022, allocations: 16.53 kB / 0.8327 GB, free: 8.664 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.167e-05/1.022, allocations: 51 kB / 0.8327 GB, free: 8.605 MB / 0.6075 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0009057/1.023, allocations: 111.3 kB / 0.8329 GB, free: 8.496 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=66): time 7.594e-06/1.023, allocations: 4 kB / 0.8329 GB, free: 8.492 MB / 0.6075 GB Notification: Performance of matching and sorting (n=66): time 0.004125/1.027, allocations: 1.326 MB / 0.8342 GB, free: 7.16 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.64e-05/1.027, allocations: 81.67 kB / 0.8342 GB, free: 7.062 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00243/1.029, allocations: 1.444 MB / 0.8356 GB, free: 5.609 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 0.000154/1.029, allocations: 49.7 kB / 0.8357 GB, free: 5.555 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007261/1.03, allocations: 0.8297 MB / 0.8365 GB, free: 4.719 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002657/1.03, allocations: 257.8 kB / 0.8367 GB, free: 4.465 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004141/1.031, allocations: 230.8 kB / 0.837 GB, free: 4.23 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001311/1.031, allocations: 345.9 kB / 0.8373 GB, free: 3.887 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009969/1.032, allocations: 469.7 kB / 0.8377 GB, free: 3.426 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001204/1.033, allocations: 0.771 MB / 0.8385 GB, free: 2.52 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002164/1.035, allocations: 1.24 MB / 0.8397 GB, free: 1.145 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.588e-06/1.035, allocations: 4 kB / 0.8397 GB, free: 1.141 MB / 0.6075 GB Notification: Performance of matching and sorting (n=135) (initialization): time 0.003039/1.038, allocations: 1.534 MB / 0.8412 GB, free: 15.57 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 9.256e-05/1.039, allocations: 123.4 kB / 0.8413 GB, free: 15.43 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.209e-05/1.039, allocations: 8 kB / 0.8413 GB, free: 15.42 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.094e-05/1.039, allocations: 16 kB / 0.8414 GB, free: 15.41 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001129/1.04, allocations: 251.6 kB / 0.8416 GB, free: 15.16 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.258e-05/1.04, allocations: 17.34 kB / 0.8416 GB, free: 15.14 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001751/1.042, allocations: 75.94 kB / 0.8417 GB, free: 15.07 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001124/1.042, allocations: 47.98 kB / 0.8417 GB, free: 15.02 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001329/1.043, allocations: 0.7562 MB / 0.8425 GB, free: 14.26 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0009146/1.044, allocations: 0.7203 MB / 0.8432 GB, free: 13.41 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001503/1.046, allocations: 1.147 MB / 0.8443 GB, free: 12.13 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 9.939e-06/1.046, allocations: 4 kB / 0.8443 GB, free: 12.13 MB / 0.6231 GB Notification: Performance of matching and sorting (n=135) (initialization_lambda0): time 0.002385/1.048, allocations: 1.425 MB / 0.8457 GB, free: 10.67 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 7.58e-05/1.048, allocations: 125.1 kB / 0.8458 GB, free: 10.52 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.323e-05/1.048, allocations: 8 kB / 0.8458 GB, free: 10.52 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.754e-05/1.048, allocations: 12 kB / 0.8458 GB, free: 10.5 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000898/1.049, allocations: 219.7 kB / 0.846 GB, free: 10.29 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.852e-05/1.049, allocations: 23.92 kB / 0.8461 GB, free: 10.27 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00159/1.051, allocations: 64.17 kB / 0.8461 GB, free: 10.2 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001145/1.051, allocations: 44 kB / 0.8462 GB, free: 10.16 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 34 * Number of states: 0 () * Number of discrete variables: 4 (humBac.vol.i_w,humFor.vol.i_w,senMas2.i_x,senMas1.i_x) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (133): * Single equations (assignments): 127 * Array equations: 2 * Algorithm blocks: 4 * 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 0.000384/1.051, allocations: 259.8 kB / 0.8464 GB, free: 9.898 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004556/1.052, allocations: 167 kB / 0.8466 GB, free: 9.734 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002245/1.054, allocations: 0.9435 MB / 0.8475 GB, free: 8.773 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.282e-05/1.054, allocations: 8 kB / 0.8475 GB, free: 8.766 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.755e-06/1.054, allocations: 4 kB / 0.8475 GB, free: 8.762 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001738/1.056, allocations: 0.905 MB / 0.8484 GB, free: 7.812 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004778/1.06, allocations: 2.32 MB / 0.8506 GB, free: 5.426 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.988e-06/1.06, allocations: 0 / 0.8506 GB, free: 5.426 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001001/1.061, allocations: 187.8 kB / 0.8508 GB, free: 5.242 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.817e-05/1.061, allocations: 7.984 kB / 0.8508 GB, free: 5.234 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.496e-05/1.062, allocations: 16 kB / 0.8508 GB, free: 5.219 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 9.538e-06/1.062, allocations: 11.92 kB / 0.8509 GB, free: 5.207 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.485e-06/1.062, allocations: 4.094 kB / 0.8509 GB, free: 5.203 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00303/1.065, allocations: 1.498 MB / 0.8523 GB, free: 3.68 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008934/1.065, allocations: 360 kB / 0.8527 GB, free: 3.309 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003794/1.066, allocations: 19.94 kB / 0.8527 GB, free: 3.289 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001478/1.067, allocations: 67.86 kB / 0.8528 GB, free: 3.223 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001177/1.068, allocations: 48.44 kB / 0.8528 GB, free: 3.176 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001378/1.068, allocations: 35.97 kB / 0.8528 GB, free: 3.141 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.001776/1.069, allocations: 0.9689 MB / 0.8538 GB, free: 2.176 MB / 0.6231 GB Notification: Performance of sort global known variables: time 1.61e-07/1.069, allocations: 4 kB / 0.8538 GB, free: 2.172 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.003129/1.073, allocations: 0.9047 MB / 0.8547 GB, free: 1.266 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 6 (humBac.vol.dynBal.U,humBac.vol.dynBal.m,humBac.vol.dynBal.mXi[1],humFor.vol.dynBal.U,humFor.vol.dynBal.m,humFor.vol.dynBal.mXi[1]) * 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 (70): * Single equations (assignments): 70 * 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 0.0009485/1.074, allocations: 250.1 kB / 0.8549 GB, free: 1.027 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.004024/1.078, allocations: 2.017 MB / 0.8569 GB, free: 14.92 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 8.045e-06/1.078, allocations: 0.5625 kB / 0.8569 GB, free: 14.92 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.0008621/1.078, allocations: 416 kB / 0.8573 GB, free: 14.51 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004847/1.083, allocations: 0.9048 MB / 0.8582 GB, free: 13.61 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006451/1.09, allocations: 3.074 MB / 0.8612 GB, free: 10.49 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001612/1.091, allocations: 1.368 MB / 0.8625 GB, free: 9.098 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.002092/1.094, allocations: 429.1 kB / 0.8629 GB, free: 8.672 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004979/1.094, allocations: 123.4 kB / 0.863 GB, free: 8.551 MB / 0.6387 GB Notification: Performance of SimCode: time 1.543e-06/1.094, allocations: 4 kB / 0.863 GB, free: 8.547 MB / 0.6387 GB Notification: Performance of Templates: time 0.3872/1.481, allocations: 33.16 MB / 0.8954 GB, free: 271.1 MB / 0.6544 GB make -j1 -f Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier.makefile (rm -f Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier.pipe ; mkfifo Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier.pipe ; head -c 1048576 < Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier.pipe >> ../files/Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier.sim & ./Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier -abortSlowSimulation -alarm=480 -lv LOG_STATS > Annex60_1.0.0_Annex60.Fluid.Interfaces.Examples.ReverseFlowHumidifier.pipe 2>&1)