Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.FilterPower.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.CHPs.BaseClasses.Validation.FilterPower,fileNamePrefix="Buildings_maint_7_0_x_Buildings_Fluid_CHPs_BaseClasses_Validation_FilterPower",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.CHPs.BaseClasses.Validation.FilterPower,fileNamePrefix="Buildings_maint_7_0_x_Buildings_Fluid_CHPs_BaseClasses_Validation_FilterPower",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.389/1.389, allocations: 252 MB / 267.3 MB, free: 10.85 MB / 218.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.0009715/0.0009715, allocations: 175.6 kB / 327 MB, free: 2.102 MB / 250.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.685/1.685, allocations: 205.4 MB / 0.578 GB, free: 20.09 MB / 426.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0007991/0.000799, allocations: 90.05 kB / 0.6826 GB, free: 12.75 MB / 0.5105 GB Notification: Performance of FrontEnd - loaded program: time 0.0003164/0.0003165, allocations: 9.5 kB / 0.7971 GB, free: 135.1 MB / 0.6042 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2206/0.2209, allocations: 106.3 MB / 0.9009 GB, free: 63.38 MB / 0.6042 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.CHPs.BaseClasses.Validation.FilterPower): time 0.002722/0.2237, allocations: 2.276 MB / 0.9031 GB, free: 61.08 MB / 0.6042 GB Notification: Performance of NFInst.instExpressions: time 0.001707/0.2255, allocations: 1.347 MB / 0.9045 GB, free: 59.73 MB / 0.6042 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001671/0.2257, allocations: 7.938 kB / 0.9045 GB, free: 59.72 MB / 0.6042 GB Notification: Performance of NFTyping.typeComponents: time 0.0005701/0.2262, allocations: 223 kB / 0.9047 GB, free: 59.5 MB / 0.6042 GB Notification: Performance of NFTyping.typeBindings: time 0.0003089/0.2266, allocations: 143.4 kB / 0.9048 GB, free: 59.36 MB / 0.6042 GB Notification: Performance of NFTyping.typeClassSections: time 0.0003715/0.2269, allocations: 175.8 kB / 0.905 GB, free: 59.19 MB / 0.6042 GB Notification: Performance of NFFlatten.flatten: time 0.0003257/0.2273, allocations: 414.7 kB / 0.9054 GB, free: 58.78 MB / 0.6042 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002115/0.2275, allocations: 124 kB / 0.9055 GB, free: 58.65 MB / 0.6042 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0001319/0.2276, allocations: 135.2 kB / 0.9056 GB, free: 58.52 MB / 0.6042 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001602/0.2278, allocations: 167 kB / 0.9058 GB, free: 58.36 MB / 0.6042 GB Notification: Performance of NFPackage.collectConstants: time 3.694e-05/0.2278, allocations: 8 kB / 0.9058 GB, free: 58.35 MB / 0.6042 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0001003/0.2279, allocations: 39.98 kB / 0.9058 GB, free: 58.31 MB / 0.6042 GB Notification: Performance of NFScalarize.scalarize: time 0.0001002/0.2281, allocations: 115.5 kB / 0.9059 GB, free: 58.2 MB / 0.6042 GB Notification: Performance of NFVerifyModel.verify: time 0.000129/0.2282, allocations: 224.1 kB / 0.9062 GB, free: 57.97 MB / 0.6042 GB Notification: Performance of NFConvertDAE.convert: time 0.000383/0.2286, allocations: 0.58 MB / 0.9067 GB, free: 57.39 MB / 0.6042 GB Notification: Performance of FrontEnd - DAE generated: time 4.659e-06/0.2286, allocations: 4 kB / 0.9067 GB, free: 57.38 MB / 0.6042 GB Notification: Performance of FrontEnd: time 2.245e-06/0.2286, allocations: 0 / 0.9067 GB, free: 57.38 MB / 0.6042 GB Notification: Performance of Transformations before backend: time 7.053e-06/0.2286, allocations: 0 / 0.9067 GB, free: 57.38 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: 43 * Number of variables: 43 Notification: Performance of Generate backend data structure: time 0.001017/0.2296, allocations: 0.7975 MB / 0.9075 GB, free: 56.54 MB / 0.6042 GB Notification: Performance of prepare preOptimizeDAE: time 4.033e-05/0.2297, allocations: 12.03 kB / 0.9075 GB, free: 56.52 MB / 0.6042 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.41e-05/0.2297, allocations: 50.73 kB / 0.9076 GB, free: 56.46 MB / 0.6042 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 8.785e-05/0.2298, allocations: 72.08 kB / 0.9076 GB, free: 56.39 MB / 0.6042 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004462/0.2303, allocations: 460.3 kB / 0.9081 GB, free: 55.91 MB / 0.6042 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.21e-05/0.2303, allocations: 20.38 kB / 0.9081 GB, free: 55.89 MB / 0.6042 GB Notification: Performance of preOpt expandDerOperator (simulation): time 3.85e-05/0.2304, allocations: 23.94 kB / 0.9081 GB, free: 55.86 MB / 0.6042 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0003832/0.2308, allocations: 217.5 kB / 0.9083 GB, free: 55.64 MB / 0.6042 GB Notification: Performance of preOpt findStateOrder (simulation): time 9.738e-06/0.2308, allocations: 0 / 0.9083 GB, free: 55.64 MB / 0.6042 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.219e-05/0.2308, allocations: 4 kB / 0.9083 GB, free: 55.64 MB / 0.6042 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.432e-06/0.2308, allocations: 7.984 kB / 0.9083 GB, free: 55.63 MB / 0.6042 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0003322/0.2312, allocations: 179.8 kB / 0.9085 GB, free: 55.46 MB / 0.6042 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001133/0.2323, allocations: 0.8892 MB / 0.9094 GB, free: 54.51 MB / 0.6042 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005957/0.2329, allocations: 246.7 kB / 0.9096 GB, free: 54.26 MB / 0.6042 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001782/0.2331, allocations: 96.81 kB / 0.9097 GB, free: 54.16 MB / 0.6042 GB Notification: Performance of preOpt evalFunc (simulation): time 2.849e-05/0.2331, allocations: 7.938 kB / 0.9097 GB, free: 54.16 MB / 0.6042 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0003418/0.2335, allocations: 172.9 kB / 0.9099 GB, free: 53.97 MB / 0.6042 GB Notification: Performance of pre-optimization done (n=15): time 1.753e-06/0.2335, allocations: 0 / 0.9099 GB, free: 53.97 MB / 0.6042 GB Notification: Performance of matching and sorting (n=15): time 0.0007279/0.2342, allocations: 326.2 kB / 0.9102 GB, free: 53.64 MB / 0.6042 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.267e-05/0.2343, allocations: 85.11 kB / 0.9103 GB, free: 53.54 MB / 0.6042 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005713/0.2349, allocations: 0.6877 MB / 0.9109 GB, free: 52.84 MB / 0.6042 GB Notification: Performance of collectPreVariables (initialization): time 2.485e-05/0.2349, allocations: 41.64 kB / 0.911 GB, free: 52.8 MB / 0.6042 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001577/0.2351, allocations: 296.1 kB / 0.9113 GB, free: 52.5 MB / 0.6042 GB Notification: Performance of collectInitialBindings (initialization): time 3.485e-05/0.2351, allocations: 43.44 kB / 0.9113 GB, free: 52.46 MB / 0.6042 GB Notification: Performance of simplifyInitialFunctions (initialization): time 1.539e-05/0.2351, allocations: 11.94 kB / 0.9113 GB, free: 52.45 MB / 0.6042 GB Notification: Performance of setup shared object (initialization): time 8.541e-05/0.2352, allocations: 370.8 kB / 0.9117 GB, free: 52.08 MB / 0.6042 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002215/0.2355, allocations: 124 kB / 0.9118 GB, free: 51.96 MB / 0.6042 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002384/0.2357, allocations: 173.1 kB / 0.912 GB, free: 51.77 MB / 0.6042 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003677/0.2361, allocations: 221.2 kB / 0.9122 GB, free: 51.55 MB / 0.6042 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.044e-06/0.2361, allocations: 4 kB / 0.9122 GB, free: 51.54 MB / 0.6042 GB Notification: Performance of matching and sorting (n=30) (initialization): time 0.0005495/0.2366, allocations: 372.8 kB / 0.9125 GB, free: 51.17 MB / 0.6042 GB Notification: Performance of prepare postOptimizeDAE: time 3.816e-05/0.2367, allocations: 102.9 kB / 0.9126 GB, free: 51.06 MB / 0.6042 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.372e-06/0.2367, allocations: 3.984 kB / 0.9126 GB, free: 51.05 MB / 0.6042 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.596e-05/0.2367, allocations: 4 kB / 0.9126 GB, free: 51.05 MB / 0.6042 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001975/0.2369, allocations: 55.94 kB / 0.9127 GB, free: 51 MB / 0.6042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.625e-06/0.2369, allocations: 4 kB / 0.9127 GB, free: 50.99 MB / 0.6042 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002208/0.2372, allocations: 47.81 kB / 0.9127 GB, free: 50.95 MB / 0.6042 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.762e-05/0.2372, allocations: 8 kB / 0.9127 GB, free: 50.94 MB / 0.6042 GB Notification: Performance of prepare postOptimizeDAE: time 5.571e-06/0.2372, allocations: 4 kB / 0.9127 GB, free: 50.93 MB / 0.6042 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0004019/0.2376, allocations: 259.8 kB / 0.913 GB, free: 50.68 MB / 0.6042 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.844e-06/0.2376, allocations: 4 kB / 0.913 GB, free: 50.68 MB / 0.6042 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.134e-06/0.2376, allocations: 0 / 0.913 GB, free: 50.68 MB / 0.6042 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001843/0.2378, allocations: 47.91 kB / 0.913 GB, free: 50.63 MB / 0.6042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.625e-06/0.2378, allocations: 0 / 0.913 GB, free: 50.63 MB / 0.6042 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001847/0.238, allocations: 51.81 kB / 0.9131 GB, free: 50.58 MB / 0.6042 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.818e-05/0.2381, allocations: 12 kB / 0.9131 GB, free: 50.57 MB / 0.6042 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 3 * Number of states: 0 () * Number of discrete variables: 12 ($whenCondition1,$PRE.PEleDem.tab.nextTimeEvent,PEleDem.tab.nextTimeEvent,$PRE.PEleDem.tab.nextTimeEventScaled,PEleDem.tab.nextTimeEventScaled,filPow.assPow.assMesP.u,filPow.assPow.assMesDP.u,$PRE.filPow.assPow.maxPow.y,filPow.assPow.maxPow.y,$PRE.filPow.assPow.minPow.y,filPow.assPow.minPow.y,filPow.limDp.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (30): * Single equations (assignments): 30 * 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 0.0001923/0.2383, allocations: 294.3 kB / 0.9134 GB, free: 50.27 MB / 0.6042 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.834e-05/0.2383, allocations: 63.25 kB / 0.9134 GB, free: 50.21 MB / 0.6042 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 8.634e-05/0.2384, allocations: 61.3 kB / 0.9135 GB, free: 50.14 MB / 0.6042 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.586e-06/0.2384, allocations: 0 / 0.9135 GB, free: 50.14 MB / 0.6042 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.57e-06/0.2384, allocations: 3.938 kB / 0.9135 GB, free: 50.14 MB / 0.6042 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.909e-06/0.2384, allocations: 4 kB / 0.9135 GB, free: 50.13 MB / 0.6042 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0003103/0.2388, allocations: 433.2 kB / 0.9139 GB, free: 49.66 MB / 0.6042 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.332e-06/0.2388, allocations: 0 / 0.9139 GB, free: 49.66 MB / 0.6042 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001341/0.2389, allocations: 27.98 kB / 0.9139 GB, free: 49.63 MB / 0.6042 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.953e-06/0.2389, allocations: 0 / 0.9139 GB, free: 49.63 MB / 0.6042 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.788e-05/0.2389, allocations: 8 kB / 0.914 GB, free: 49.62 MB / 0.6042 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.965e-06/0.239, allocations: 11.92 kB / 0.914 GB, free: 49.61 MB / 0.6042 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.703e-06/0.239, allocations: 3.938 kB / 0.914 GB, free: 49.61 MB / 0.6042 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006263/0.2396, allocations: 381.4 kB / 0.9143 GB, free: 49.22 MB / 0.6042 GB Notification: Performance of postOpt removeConstants (simulation): time 7.788e-05/0.2397, allocations: 136.3 kB / 0.9145 GB, free: 49.07 MB / 0.6042 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.027e-05/0.2397, allocations: 8 kB / 0.9145 GB, free: 49.06 MB / 0.6042 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001742/0.2399, allocations: 40.03 kB / 0.9145 GB, free: 49.02 MB / 0.6042 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.972e-05/0.24, allocations: 27.91 kB / 0.9145 GB, free: 48.99 MB / 0.6042 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.57e-05/0.24, allocations: 4 kB / 0.9145 GB, free: 48.99 MB / 0.6042 GB Notification: Performance of sorting global known variables: time 0.0003808/0.2404, allocations: 463 kB / 0.915 GB, free: 48.54 MB / 0.6042 GB Notification: Performance of sort global known variables: time 1.4e-07/0.2404, allocations: 0 / 0.915 GB, free: 48.54 MB / 0.6042 GB Notification: Performance of remove unused functions: time 0.0003731/0.2408, allocations: 123.7 kB / 0.9151 GB, free: 48.42 MB / 0.6042 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 2 (filPow.assPow.demRat.x,filPow.dPLim.y) * Number of discrete variables: 7 ($whenCondition1,PEleDem.tab.nextTimeEvent,PEleDem.tab.nextTimeEventScaled,filPow.assPow.assMesP.u,filPow.assPow.assMesDP.u,filPow.assPow.maxPow.y,filPow.assPow.minPow.y) * Number of discrete states: 4 (filPow.assPow.minPow.y,filPow.assPow.maxPow.y,PEleDem.tab.nextTimeEventScaled,PEleDem.tab.nextTimeEvent) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (15): * Single equations (assignments): 13 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * 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 0.001618/0.2424, allocations: 1.231 MB / 0.9163 GB, free: 47.32 MB / 0.6042 GB Notification: Performance of simCode: created initialization part: time 0.0007086/0.2431, allocations: 391.9 kB / 0.9167 GB, free: 46.94 MB / 0.6042 GB Notification: Performance of simCode: created event and clocks part: time 2.505e-06/0.2432, allocations: 0 / 0.9167 GB, free: 46.94 MB / 0.6042 GB Notification: Performance of simCode: created simulation system equations: time 0.0001974/0.2434, allocations: 99.89 kB / 0.9168 GB, free: 46.84 MB / 0.6042 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004726/0.2438, allocations: 87.81 kB / 0.9169 GB, free: 46.77 MB / 0.6042 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004592/0.2484, allocations: 4.564 MB / 0.9213 GB, free: 42.09 MB / 0.6042 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002736/0.2487, allocations: 0.8664 MB / 0.9222 GB, free: 41.2 MB / 0.6042 GB Notification: Performance of simCode: alias equations: time 0.0001852/0.2489, allocations: 54.94 kB / 0.9222 GB, free: 41.15 MB / 0.6042 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002132/0.2491, allocations: 187.4 kB / 0.9224 GB, free: 40.96 MB / 0.6042 GB Notification: Performance of SimCode: time 1.202e-06/0.2492, allocations: 0 / 0.9224 GB, free: 40.96 MB / 0.6042 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.01897/0.2681, allocations: 9.472 MB / 0.9316 GB, free: 31.63 MB / 0.6042 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001441/0.2683, allocations: 261.6 kB / 0.9319 GB, free: 31.37 MB / 0.6042 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.35/2.618, allocations: 0 / 0.9319 GB, free: 31.37 MB / 0.6042 GB (rm -f Buildings_maint.7.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.FilterPower.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.FilterPower.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.FilterPower.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.FilterPower.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_maint_7_0_x_Buildings_Fluid_CHPs_BaseClasses_Validation_FilterPower_fmu --startTime=0 --stopTime=1800 --timeout=50 --tolerance=1e-06 Buildings_maint_7_0_x_Buildings_Fluid_CHPs_BaseClasses_Validation_FilterPower.fmu > Buildings_maint.7.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.FilterPower.pipe 2>&1)