Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.Actuators.Dampers.Examples.MixingBox.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/IDEAS 3.0.0-master/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-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: "" <> buildModelFMU(IDEAS.Fluid.Actuators.Dampers.Examples.MixingBox,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Actuators_Dampers_Examples_MixingBox",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.Actuators.Dampers.Examples.MixingBox,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Actuators_Dampers_Examples_MixingBox",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001034/0.001035, allocations: 111.3 kB / 15.23 MB, free: 0.6602 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0011/0.001101, allocations: 191.5 kB / 16.13 MB, free: 6.707 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.287/1.287, allocations: 222.9 MB / 239.8 MB, free: 4.625 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.87/0.87, allocations: 135.1 MB / 425.1 MB, free: 11.88 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001134/0.001134, allocations: 63.72 kB / 0.5048 GB, free: 5.648 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1346/0.1357, allocations: 80.93 MB / 0.5838 GB, free: 4.887 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Actuators.Dampers.Examples.MixingBox): time 0.397/0.5327, allocations: 187.4 MB / 0.7669 GB, free: 1.91 MB / 0.5762 GB Notification: Performance of NFInst.instExpressions: time 0.006542/0.5393, allocations: 4.302 MB / 0.7711 GB, free: 13.6 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0008317/0.5402, allocations: 27.81 kB / 0.7711 GB, free: 13.57 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.001156/0.5414, allocations: 413.7 kB / 0.7715 GB, free: 13.16 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.002962/0.5444, allocations: 1.464 MB / 0.7729 GB, free: 11.7 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.00279/0.5472, allocations: 1.235 MB / 0.7741 GB, free: 10.48 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.002836/0.55, allocations: 2.784 MB / 0.7768 GB, free: 7.688 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001127/0.5512, allocations: 0.9321 MB / 0.7777 GB, free: 6.742 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001129/0.5523, allocations: 0.8365 MB / 0.7786 GB, free: 5.902 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0008685/0.5532, allocations: 0.8404 MB / 0.7794 GB, free: 5.059 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.0001535/0.5533, allocations: 68 kB / 0.7794 GB, free: 4.992 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002208/0.5555, allocations: 1.372 MB / 0.7808 GB, free: 3.617 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.0003425/0.5559, allocations: 350.7 kB / 0.7811 GB, free: 3.273 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0005227/0.5564, allocations: 0.5711 MB / 0.7817 GB, free: 2.699 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.001951/0.5584, allocations: 1.99 MB / 0.7836 GB, free: 0.7031 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 3.687e-06/0.5584, allocations: 0 / 0.7836 GB, free: 0.7031 MB / 0.5919 GB Notification: Performance of FrontEnd: time 7.81e-07/0.5584, allocations: 0 / 0.7836 GB, free: 0.7031 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 9.969e-06/0.5584, allocations: 0 / 0.7836 GB, free: 0.7031 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: 119 * Number of variables: 119 Notification: Performance of Generate backend data structure: time 0.004411/0.5628, allocations: 1.73 MB / 0.7853 GB, free: 14.92 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 4.965e-05/0.5629, allocations: 12.03 kB / 0.7853 GB, free: 14.91 MB / 0.6075 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001252/0.563, allocations: 90.52 kB / 0.7854 GB, free: 14.81 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008629/0.5639, allocations: 178.5 kB / 0.7856 GB, free: 14.64 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001692/0.5656, allocations: 1.037 MB / 0.7866 GB, free: 13.54 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001401/0.5658, allocations: 56.92 kB / 0.7866 GB, free: 13.48 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001094/0.5659, allocations: 60 kB / 0.7867 GB, free: 13.43 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001139/0.567, allocations: 0.6114 MB / 0.7873 GB, free: 12.81 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.174e-05/0.567, allocations: 0 / 0.7873 GB, free: 12.81 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.681e-05/0.5671, allocations: 20 kB / 0.7873 GB, free: 12.79 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.436e-05/0.5672, allocations: 25 kB / 0.7873 GB, free: 12.77 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00126/0.5684, allocations: 0.6168 MB / 0.7879 GB, free: 12.15 MB / 0.6075 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 0.003843/0.5723, allocations: 2.661 MB / 0.7905 GB, free: 9.352 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001096/0.5734, allocations: 0.5436 MB / 0.7911 GB, free: 8.801 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005988/0.574, allocations: 345.4 kB / 0.7914 GB, free: 8.461 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003864/0.5744, allocations: 291.3 kB / 0.7917 GB, free: 8.121 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.074e-05/0.5744, allocations: 46.5 kB / 0.7917 GB, free: 8.066 MB / 0.6075 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.000705/0.5752, allocations: 159.5 kB / 0.7919 GB, free: 7.91 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=43): time 2.164e-06/0.5752, allocations: 0 / 0.7919 GB, free: 7.91 MB / 0.6075 GB Notification: Performance of matching and sorting (n=43): time 0.002242/0.5774, allocations: 1.021 MB / 0.7929 GB, free: 6.883 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.041e-05/0.5775, allocations: 55.41 kB / 0.7929 GB, free: 6.816 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001768/0.5792, allocations: 1.271 MB / 0.7942 GB, free: 5.527 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 6.19e-05/0.5793, allocations: 41.7 kB / 0.7942 GB, free: 5.48 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003343/0.5797, allocations: 429.7 kB / 0.7946 GB, free: 5.059 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001298/0.5798, allocations: 153.8 kB / 0.7948 GB, free: 4.906 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001912/0.58, allocations: 113.9 kB / 0.7949 GB, free: 4.789 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001277/0.5801, allocations: 325.9 kB / 0.7952 GB, free: 4.465 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005444/0.5807, allocations: 282.1 kB / 0.7955 GB, free: 4.188 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007306/0.5814, allocations: 485.3 kB / 0.7959 GB, free: 3.637 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001139/0.5826, allocations: 0.5841 MB / 0.7965 GB, free: 3.051 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.445e-06/0.5826, allocations: 0 / 0.7965 GB, free: 3.051 MB / 0.6075 GB Notification: Performance of matching and sorting (n=45) (initialization): time 0.001486/0.5841, allocations: 0.734 MB / 0.7972 GB, free: 2.309 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 1.584e-05/0.5841, allocations: 8 kB / 0.7972 GB, free: 2.301 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.15e-06/0.5841, allocations: 0 / 0.7972 GB, free: 2.301 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.256e-05/0.5841, allocations: 0 / 0.7972 GB, free: 2.301 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006503/0.5848, allocations: 119.8 kB / 0.7973 GB, free: 2.184 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.625e-06/0.5848, allocations: 7.938 kB / 0.7973 GB, free: 2.176 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001191/0.586, allocations: 119.7 kB / 0.7974 GB, free: 2.059 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.417e-05/0.586, allocations: 23.97 kB / 0.7975 GB, free: 2.035 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0007751/0.5868, allocations: 467.9 kB / 0.7979 GB, free: 1.574 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0007264/0.5876, allocations: 482 kB / 0.7984 GB, free: 1.023 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001112/0.5887, allocations: 0.5929 MB / 0.799 GB, free: 440 kB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.352e-06/0.5887, allocations: 4 kB / 0.799 GB, free: 436 kB / 0.6075 GB Notification: Performance of matching and sorting (n=45) (initialization_lambda0): time 0.001494/0.5902, allocations: 0.7266 MB / 0.7997 GB, free: 15.69 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 9.418e-06/0.5902, allocations: 4 kB / 0.7997 GB, free: 15.69 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.656e-06/0.5902, allocations: 4 kB / 0.7997 GB, free: 15.68 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.589e-06/0.5902, allocations: 4 kB / 0.7997 GB, free: 15.68 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006019/0.5908, allocations: 127.8 kB / 0.7998 GB, free: 15.55 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.188e-06/0.5909, allocations: 3.672 kB / 0.7998 GB, free: 15.55 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001296/0.5922, allocations: 128.3 kB / 0.7999 GB, free: 15.43 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.002e-05/0.5922, allocations: 23.97 kB / 0.8 GB, free: 15.41 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * 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 (45): * Single equations (assignments): 45 * 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 prepare postOptimizeDAE: time 0.0002513/0.5925, allocations: 208.1 kB / 0.8002 GB, free: 15.2 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001815/0.5927, allocations: 106.7 kB / 0.8003 GB, free: 15.09 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001654/0.5943, allocations: 0.8031 MB / 0.801 GB, free: 14.28 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.474e-06/0.5943, allocations: 4 kB / 0.801 GB, free: 14.27 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.318e-06/0.5943, allocations: 3.938 kB / 0.801 GB, free: 14.27 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.372e-06/0.5944, allocations: 3.984 kB / 0.801 GB, free: 14.27 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003007/0.5974, allocations: 1.949 MB / 0.803 GB, free: 12.23 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.762e-06/0.5974, allocations: 4 kB / 0.803 GB, free: 12.23 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005436/0.5979, allocations: 115.7 kB / 0.8031 GB, free: 12.11 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 7.594e-06/0.598, allocations: 4 kB / 0.8031 GB, free: 12.11 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.088e-05/0.598, allocations: 12.28 kB / 0.8031 GB, free: 12.1 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.34e-06/0.598, allocations: 8 kB / 0.8031 GB, free: 12.09 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.226e-06/0.598, allocations: 7.938 kB / 0.8031 GB, free: 12.08 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002003/0.6, allocations: 1.233 MB / 0.8043 GB, free: 10.81 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003929/0.6004, allocations: 295.5 kB / 0.8046 GB, free: 10.5 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001419/0.6006, allocations: 12 kB / 0.8046 GB, free: 10.49 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009725/0.6016, allocations: 75.97 kB / 0.8047 GB, free: 10.41 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001004/0.6017, allocations: 31.95 kB / 0.8047 GB, free: 10.38 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.076e-05/0.6017, allocations: 23.98 kB / 0.8047 GB, free: 10.36 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.001292/0.603, allocations: 0.9169 MB / 0.8056 GB, free: 9.434 MB / 0.6231 GB Notification: Performance of sort global known variables: time 2e-07/0.603, allocations: 3.938 kB / 0.8056 GB, free: 9.43 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.001089/0.6041, allocations: 419.3 kB / 0.806 GB, free: 9.02 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 10 * Number of states: 2 (mixBox.filter.s[1],mixBox.filter.s[2]) * 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 (52): * Single equations (assignments): 52 * 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 0.002814/0.6069, allocations: 1.895 MB / 0.8079 GB, free: 7.082 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.002146/0.6091, allocations: 0.9355 MB / 0.8088 GB, free: 6.148 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 3.818e-06/0.6091, allocations: 0 / 0.8088 GB, free: 6.148 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0007258/0.6099, allocations: 340.1 kB / 0.8091 GB, free: 5.816 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002352/0.6122, allocations: 459 kB / 0.8095 GB, free: 5.379 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01462/0.6268, allocations: 9.214 MB / 0.8185 GB, free: 11.85 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006809/0.6276, allocations: 1.038 MB / 0.8196 GB, free: 10.78 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.001159/0.6287, allocations: 298 kB / 0.8198 GB, free: 10.49 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006781/0.6294, allocations: 391.3 kB / 0.8202 GB, free: 10.11 MB / 0.6387 GB Notification: Performance of SimCode: time 5.11e-07/0.6294, allocations: 0 / 0.8202 GB, free: 10.11 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.0475/0.6769, allocations: 29.11 MB / 0.8486 GB, free: 13.37 MB / 0.67 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002306/0.6772, allocations: 241.4 kB / 0.8489 GB, free: 13.11 MB / 0.67 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.315/2.993, allocations: 3.938 kB / 0.8489 GB, free: 13.11 MB / 0.67 GB (rm -f IDEAS_dev_IDEAS.Fluid.Actuators.Dampers.Examples.MixingBox.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.Actuators.Dampers.Examples.MixingBox.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.Actuators.Dampers.Examples.MixingBox.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.Actuators.Dampers.Examples.MixingBox.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IDEAS_dev_IDEAS_Fluid_Actuators_Dampers_Examples_MixingBox_fmu --startTime=0 --stopTime=240 --timeout=50 --tolerance=1e-06 IDEAS_dev_IDEAS_Fluid_Actuators_Dampers_Examples_MixingBox.fmu > IDEAS_dev_IDEAS.Fluid.Actuators.Dampers.Examples.MixingBox.pipe 2>&1)