Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent.conf.json loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 7.0.1/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) Using package ModelicaServices with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Using package Modelica with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package Buildings with version 7.0.1 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 7.0.1/package.mo) Running command: translateModel(Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent") translateModel(Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent") Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 7.0.1/package.mo): time 2.423/2.423, allocations: 254.9 MB / 269.9 MB, free: 9.637 MB / 218.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001369/0.001369, allocations: 202.6 kB / 329.5 MB, free: 1.137 MB / 250.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 2.511/2.511, allocations: 225.6 MB / 0.6001 GB, free: 2.176 MB / 426.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001054/0.001054, allocations: 112.4 kB / 0.7074 GB, free: 7.887 MB / 0.5261 GB Notification: Performance of FrontEnd - loaded program: time 0.0004867/0.0004869, allocations: 14.34 kB / 0.8242 GB, free: 124.3 MB / 0.5886 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2349/0.2354, allocations: 109.1 MB / 0.9308 GB, free: 25.16 MB / 0.5886 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent): time 0.02264/0.2581, allocations: 17.97 MB / 0.9483 GB, free: 7.121 MB / 0.5886 GB Notification: Performance of NFInst.instExpressions: time 0.01504/0.2732, allocations: 7.695 MB / 0.9558 GB, free: 15.41 MB / 0.6042 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001085/0.2743, allocations: 23.75 kB / 0.9559 GB, free: 15.39 MB / 0.6042 GB Notification: Performance of NFTyping.typeComponents: time 0.000968/0.2753, allocations: 182.7 kB / 0.956 GB, free: 15.21 MB / 0.6042 GB Notification: Performance of NFTyping.typeBindings: time 0.002855/0.2782, allocations: 0.6137 MB / 0.9566 GB, free: 14.59 MB / 0.6042 GB Notification: Performance of NFTyping.typeClassSections: time 0.003178/0.2814, allocations: 0.7485 MB / 0.9574 GB, free: 13.84 MB / 0.6042 GB Notification: Performance of NFFlatten.flatten: time 0.003189/0.2846, allocations: 1.677 MB / 0.959 GB, free: 12.16 MB / 0.6042 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0009189/0.2855, allocations: 435.1 kB / 0.9594 GB, free: 11.72 MB / 0.6042 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00135/0.2869, allocations: 0.529 MB / 0.9599 GB, free: 11.19 MB / 0.6042 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001038/0.288, allocations: 493.9 kB / 0.9604 GB, free: 10.71 MB / 0.6042 GB Notification: Performance of NFPackage.collectConstants: time 0.0001171/0.2881, allocations: 28 kB / 0.9604 GB, free: 10.68 MB / 0.6042 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001833/0.2899, allocations: 0.6003 MB / 0.961 GB, free: 10.08 MB / 0.6042 GB Notification: Performance of NFScalarize.scalarize: time 0.0002296/0.2902, allocations: 123.4 kB / 0.9611 GB, free: 9.957 MB / 0.6042 GB Notification: Performance of NFVerifyModel.verify: time 0.000344/0.2905, allocations: 157.3 kB / 0.9613 GB, free: 9.797 MB / 0.6042 GB Notification: Performance of NFConvertDAE.convert: time 0.001603/0.2922, allocations: 0.7326 MB / 0.962 GB, free: 9.062 MB / 0.6042 GB Notification: Performance of FrontEnd - DAE generated: time 7.193e-06/0.2922, allocations: 0 / 0.962 GB, free: 9.062 MB / 0.6042 GB Notification: Performance of FrontEnd: time 2.454e-06/0.2922, allocations: 4 kB / 0.962 GB, free: 9.059 MB / 0.6042 GB Notification: Performance of Transformations before backend: time 1.512e-05/0.2922, allocations: 0 / 0.962 GB, free: 9.059 MB / 0.6042 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 113 * Number of variables: 113 Notification: Performance of Generate backend data structure: time 0.00286/0.2951, allocations: 0.9852 MB / 0.963 GB, free: 8.023 MB / 0.6042 GB Notification: Performance of prepare preOptimizeDAE: time 4.322e-05/0.2952, allocations: 12.03 kB / 0.963 GB, free: 8.012 MB / 0.6042 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002057/0.2954, allocations: 83.91 kB / 0.9631 GB, free: 7.93 MB / 0.6042 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001109/0.2965, allocations: 487.4 kB / 0.9635 GB, free: 7.41 MB / 0.6042 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.696e-05/0.2966, allocations: 37 kB / 0.9636 GB, free: 7.375 MB / 0.6042 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001192/0.2967, allocations: 48 kB / 0.9636 GB, free: 7.328 MB / 0.6042 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001769/0.2985, allocations: 0.6333 MB / 0.9642 GB, free: 6.629 MB / 0.6042 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.407e-05/0.2985, allocations: 7.938 kB / 0.9642 GB, free: 6.621 MB / 0.6042 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.881e-05/0.2986, allocations: 23.98 kB / 0.9642 GB, free: 6.594 MB / 0.6042 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.08e-05/0.2987, allocations: 12 kB / 0.9643 GB, free: 6.582 MB / 0.6042 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001925/0.3006, allocations: 0.515 MB / 0.9648 GB, free: 6.066 MB / 0.6042 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 0.005598/0.3062, allocations: 3.216 MB / 0.9679 GB, free: 2.656 MB / 0.6042 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001239/0.3075, allocations: 358.7 kB / 0.9682 GB, free: 2.297 MB / 0.6042 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008725/0.3084, allocations: 244.7 kB / 0.9685 GB, free: 2.055 MB / 0.6042 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0004764/0.3089, allocations: 348.1 kB / 0.9688 GB, free: 1.641 MB / 0.6042 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.856e-05/0.3089, allocations: 38.56 kB / 0.9688 GB, free: 1.594 MB / 0.6042 GB Notification: Performance of pre-optimization done (n=38): time 2.726e-06/0.3089, allocations: 4 kB / 0.9689 GB, free: 1.59 MB / 0.6042 GB Notification: Performance of matching and sorting (n=38): time 0.003948/0.3129, allocations: 0.8582 MB / 0.9697 GB, free: 0.7031 MB / 0.6042 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.95e-05/0.313, allocations: 59.16 kB / 0.9697 GB, free: 0.6328 MB / 0.6042 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001051/0.3141, allocations: 0.5705 MB / 0.9703 GB, free: 52 kB / 0.6042 GB Notification: Performance of collectPreVariables (initialization): time 9.712e-05/0.3142, allocations: 33.64 kB / 0.9703 GB, free: 12 kB / 0.6042 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003837/0.3146, allocations: 328.4 kB / 0.9706 GB, free: 15.69 MB / 0.6198 GB Notification: Performance of collectInitialBindings (initialization): time 0.000177/0.3148, allocations: 134 kB / 0.9708 GB, free: 15.55 MB / 0.6198 GB Notification: Performance of simplifyInitialFunctions (initialization): time 4.849e-05/0.3148, allocations: 16 kB / 0.9708 GB, free: 15.54 MB / 0.6198 GB Notification: Performance of setup shared object (initialization): time 0.0002027/0.315, allocations: 374.7 kB / 0.9711 GB, free: 15.16 MB / 0.6198 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008938/0.3159, allocations: 213.2 kB / 0.9714 GB, free: 14.95 MB / 0.6198 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00105/0.317, allocations: 380 kB / 0.9717 GB, free: 14.52 MB / 0.6198 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009798/0.318, allocations: 256.7 kB / 0.972 GB, free: 14.27 MB / 0.6198 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.403e-05/0.318, allocations: 4 kB / 0.972 GB, free: 14.27 MB / 0.6198 GB Notification: Performance of matching and sorting (n=73) (initialization): time 0.002649/0.3207, allocations: 0.7262 MB / 0.9727 GB, free: 13.53 MB / 0.6198 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001863/0.3209, allocations: 219.6 kB / 0.9729 GB, free: 13.25 MB / 0.6198 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.447e-05/0.3209, allocations: 8 kB / 0.9729 GB, free: 13.24 MB / 0.6198 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009891/0.3219, allocations: 144.7 kB / 0.973 GB, free: 13.1 MB / 0.6198 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001332/0.3233, allocations: 155.8 kB / 0.9732 GB, free: 12.95 MB / 0.6198 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001051/0.3244, allocations: 0.6303 MB / 0.9738 GB, free: 12.29 MB / 0.6198 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001126/0.3255, allocations: 103.4 kB / 0.9739 GB, free: 12.19 MB / 0.6198 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001018/0.3256, allocations: 35.92 kB / 0.9739 GB, free: 12.15 MB / 0.6198 GB Notification: Performance of prepare postOptimizeDAE: time 1.218e-05/0.3256, allocations: 4 kB / 0.9739 GB, free: 12.15 MB / 0.6198 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.00228/0.3279, allocations: 0.6228 MB / 0.9745 GB, free: 11.53 MB / 0.6198 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.202e-05/0.328, allocations: 4 kB / 0.9745 GB, free: 11.52 MB / 0.6198 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.487e-05/0.328, allocations: 8 kB / 0.9745 GB, free: 11.52 MB / 0.6198 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001191/0.3292, allocations: 164.3 kB / 0.9747 GB, free: 11.36 MB / 0.6198 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.766e-05/0.3292, allocations: 11.98 kB / 0.9747 GB, free: 11.34 MB / 0.6198 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001034/0.3303, allocations: 91.48 kB / 0.9748 GB, free: 11.25 MB / 0.6198 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.489e-05/0.3304, allocations: 35.92 kB / 0.9748 GB, free: 11.22 MB / 0.6198 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 20 * 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 (70): * Single equations (assignments): 69 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 3} Notification: Performance of prepare postOptimizeDAE: time 0.0004533/0.3308, allocations: 269.5 kB / 0.9751 GB, free: 10.95 MB / 0.6198 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001532/0.331, allocations: 63.16 kB / 0.9752 GB, free: 10.88 MB / 0.6198 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002572/0.3336, allocations: 0.6745 MB / 0.9758 GB, free: 10.18 MB / 0.6198 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.446e-05/0.3336, allocations: 4.141 kB / 0.9758 GB, free: 10.18 MB / 0.6198 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.522e-06/0.3336, allocations: 0 / 0.9758 GB, free: 10.18 MB / 0.6198 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.646e-05/0.3337, allocations: 11.91 kB / 0.9758 GB, free: 10.17 MB / 0.6198 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004261/0.3379, allocations: 1.4 MB / 0.9772 GB, free: 8.695 MB / 0.6198 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.995e-06/0.338, allocations: 0 / 0.9772 GB, free: 8.695 MB / 0.6198 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000742/0.3387, allocations: 95.97 kB / 0.9773 GB, free: 8.602 MB / 0.6198 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0007127/0.3395, allocations: 124.8 kB / 0.9774 GB, free: 8.477 MB / 0.6198 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.022e-05/0.3395, allocations: 11.98 kB / 0.9774 GB, free: 8.465 MB / 0.6198 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001001/0.3405, allocations: 0.6421 MB / 0.978 GB, free: 7.797 MB / 0.6198 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.585e-06/0.3406, allocations: 0 / 0.978 GB, free: 7.797 MB / 0.6198 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002377/0.3429, allocations: 0.7206 MB / 0.9787 GB, free: 7.051 MB / 0.6198 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004238/0.3434, allocations: 204 kB / 0.9789 GB, free: 6.832 MB / 0.6198 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001272/0.3435, allocations: 8 kB / 0.979 GB, free: 6.824 MB / 0.6198 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00082/0.3444, allocations: 59.8 kB / 0.979 GB, free: 6.766 MB / 0.6198 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001053/0.3445, allocations: 31.95 kB / 0.979 GB, free: 6.734 MB / 0.6198 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.548e-05/0.3446, allocations: 19.98 kB / 0.9791 GB, free: 6.715 MB / 0.6198 GB Notification: Performance of sorting global known variables: time 0.0007102/0.3453, allocations: 391.1 kB / 0.9794 GB, free: 6.34 MB / 0.6198 GB Notification: Performance of sort global known variables: time 4.3e-07/0.3453, allocations: 4 kB / 0.9794 GB, free: 6.336 MB / 0.6198 GB Notification: Performance of remove unused functions: time 0.001629/0.3469, allocations: 375.5 kB / 0.9798 GB, free: 5.969 MB / 0.6198 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * 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 (41): * Single equations (assignments): 38 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 5} Notification: Performance of Backend phase and start with SimCode phase: time 0.0009408/0.3479, allocations: 310.4 kB / 0.9801 GB, free: 5.66 MB / 0.6198 GB Notification: Performance of simCode: created initialization part: time 0.003612/0.3515, allocations: 0.9097 MB / 0.981 GB, free: 4.75 MB / 0.6198 GB Notification: Performance of simCode: created event and clocks part: time 5.381e-06/0.3516, allocations: 0 / 0.981 GB, free: 4.75 MB / 0.6198 GB Notification: Performance of simCode: created simulation system equations: time 0.001298/0.3529, allocations: 291.9 kB / 0.9813 GB, free: 4.465 MB / 0.6198 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002736/0.3556, allocations: 281.5 kB / 0.9815 GB, free: 4.188 MB / 0.6198 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003002/0.3587, allocations: 1.284 MB / 0.9828 GB, free: 2.875 MB / 0.6198 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006197/0.3593, allocations: 0.912 MB / 0.9837 GB, free: 1.938 MB / 0.6198 GB Notification: Performance of simCode: alias equations: time 0.00108/0.3604, allocations: 153.1 kB / 0.9838 GB, free: 1.789 MB / 0.6198 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002662/0.3607, allocations: 59.42 kB / 0.9839 GB, free: 1.73 MB / 0.6198 GB Notification: Performance of SimCode: time 1.142e-06/0.3607, allocations: 0 / 0.9839 GB, free: 1.73 MB / 0.6198 GB Notification: Performance of Templates: time 0.0362/0.3969, allocations: 11.82 MB / 0.9954 GB, free: 6.035 MB / 0.6355 GB make -j1 -f Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent.makefile (rm -f Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent.pipe ; mkfifo Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent.pipe ; head -c 1048576 < Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent.pipe >> ../files/Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent.sim & ./Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent.pipe 2>&1)