Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.FixedResistances.Examples.Pipe.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: "" <> buildModelFMU(Buildings.Fluid.FixedResistances.Examples.Pipe,fileNamePrefix="Buildings_8_Buildings_Fluid_FixedResistances_Examples_Pipe",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.FixedResistances.Examples.Pipe,fileNamePrefix="Buildings_8_Buildings_Fluid_FixedResistances_Examples_Pipe",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 0.0007831/0.0007831, allocations: 90.83 kB / 15.36 MB, free: 0.7383 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.005148/0.005148, allocations: 171 kB / 16.26 MB, free: 6.613 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.348/1.348, allocations: 205.4 MB / 222.4 MB, free: 5.562 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.728/1.728, allocations: 292.7 MB / 0.5502 GB, free: 14.47 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 0.0006142/0.0006141, allocations: 11.31 kB / 0.6744 GB, free: 25.83 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2056/0.2062, allocations: 116.3 MB / 0.788 GB, free: 11.49 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.FixedResistances.Examples.Pipe): time 0.04082/0.247, allocations: 44.79 MB / 0.8317 GB, free: 14.54 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.01505/0.2621, allocations: 11.32 MB / 0.8428 GB, free: 3.203 MB / 0.6544 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001671/0.2638, allocations: 47.69 kB / 0.8428 GB, free: 3.156 MB / 0.6544 GB Notification: Performance of NFTyping.typeComponents: time 0.001538/0.2654, allocations: 0.5515 MB / 0.8434 GB, free: 2.602 MB / 0.6544 GB Notification: Performance of NFTyping.typeBindings: time 0.005241/0.2706, allocations: 2.025 MB / 0.8453 GB, free: 0.5703 MB / 0.6544 GB Notification: Performance of NFTyping.typeClassSections: time 0.003476/0.2741, allocations: 1.353 MB / 0.8467 GB, free: 15.23 MB / 0.67 GB Notification: Performance of NFFlatten.flatten: time 0.029/0.3031, allocations: 29.12 MB / 0.8751 GB, free: 2.035 MB / 0.6856 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01103/0.3142, allocations: 7.307 MB / 0.8822 GB, free: 10.64 MB / 0.7012 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0146/0.3289, allocations: 5.372 MB / 0.8875 GB, free: 5.242 MB / 0.7012 GB Notification: Performance of NFSimplifyModel.simplify: time 0.01089/0.3398, allocations: 5.627 MB / 0.893 GB, free: 15.59 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 0.002012/0.3419, allocations: 288 kB / 0.8933 GB, free: 15.3 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.006468/0.3484, allocations: 1.392 MB / 0.8946 GB, free: 13.91 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.00303/0.3514, allocations: 1.42 MB / 0.896 GB, free: 12.49 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.008714/0.3602, allocations: 3.725 MB / 0.8996 GB, free: 8.738 MB / 0.7169 GB Notification: Performance of NFConvertDAE.convert: time 0.5264/0.8866, allocations: 12.15 MB / 0.9115 GB, free: 42.09 MB / 0.7169 GB Notification: Performance of FrontEnd - DAE generated: time 6.963e-06/0.8867, allocations: 4 kB / 0.9115 GB, free: 42.09 MB / 0.7169 GB Notification: Performance of FrontEnd: time 2.365e-06/0.8867, allocations: 0 / 0.9115 GB, free: 42.09 MB / 0.7169 GB Notification: Performance of Transformations before backend: time 0.0004377/0.8871, allocations: 0 / 0.9115 GB, free: 42.09 MB / 0.7169 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1302 * Number of variables: 1302 Notification: Performance of Generate backend data structure: time 0.01765/0.9048, allocations: 6.564 MB / 0.9179 GB, free: 39.47 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 4.703e-05/0.9048, allocations: 15 kB / 0.9179 GB, free: 39.47 MB / 0.7169 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.003413/0.9083, allocations: 0.7116 MB / 0.9186 GB, free: 39.41 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004861/0.9131, allocations: 0.8478 MB / 0.9194 GB, free: 39.02 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01557/0.9287, allocations: 7.616 MB / 0.9269 GB, free: 37.94 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005588/0.9293, allocations: 417 kB / 0.9273 GB, free: 37.9 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002829/0.9322, allocations: 0.5168 MB / 0.9278 GB, free: 37.89 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.02092/0.9531, allocations: 7.675 MB / 0.9353 GB, free: 37 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001645/0.9533, allocations: 23.19 kB / 0.9353 GB, free: 37 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001038/0.9544, allocations: 222.5 kB / 0.9355 GB, free: 37 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002728/0.9546, allocations: 167.7 kB / 0.9357 GB, free: 37 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0143/0.9689, allocations: 6.08 MB / 0.9416 GB, free: 36.95 MB / 0.7169 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 0.04019/1.009, allocations: 29.25 MB / 0.9702 GB, free: 22.77 MB / 0.7169 GB Notification: Performance of preOpt comSubExp (simulation): time 0.005007/1.014, allocations: 3.406 MB / 0.9735 GB, free: 21.15 MB / 0.7169 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002926/1.017, allocations: 1.959 MB / 0.9754 GB, free: 20.16 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0009883/1.018, allocations: 1.002 MB / 0.9764 GB, free: 19.07 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0001156/1.018, allocations: 76.5 kB / 0.9765 GB, free: 19 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=253): time 5.971e-06/1.018, allocations: 0 / 0.9765 GB, free: 19 MB / 0.7169 GB Notification: Performance of matching and sorting (n=253): time 0.008584/1.027, allocations: 4.694 MB / 0.9811 GB, free: 16.68 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.34e-05/1.027, allocations: 80.78 kB / 0.9811 GB, free: 16.61 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.008339/1.035, allocations: 6.023 MB / 0.987 GB, free: 13.58 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.0008089/1.036, allocations: 85.45 kB / 0.9871 GB, free: 13.51 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.002076/1.038, allocations: 2.939 MB / 0.99 GB, free: 10.96 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.001112/1.039, allocations: 0.9043 MB / 0.9909 GB, free: 10.18 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003235/1.04, allocations: 278.7 kB / 0.9911 GB, free: 10.02 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 5.671e-05/1.04, allocations: 305.1 kB / 0.9914 GB, free: 9.715 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002104/1.042, allocations: 1.643 MB / 0.993 GB, free: 8.879 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002348/1.044, allocations: 2.682 MB / 0.9956 GB, free: 6.711 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004608/1.049, allocations: 4.605 MB / 1 GB, free: 2.488 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.716e-05/1.049, allocations: 8 kB / 1 GB, free: 2.48 MB / 0.7169 GB Notification: Performance of matching and sorting (n=436) (initialization): time 0.009283/1.058, allocations: 4.961 MB / 1.005 GB, free: 13.66 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 0.0008567/1.059, allocations: 1.034 MB / 1.006 GB, free: 12.2 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.632e-05/1.059, allocations: 36 kB / 1.006 GB, free: 12.16 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.968e-05/1.059, allocations: 48 kB / 1.006 GB, free: 12.11 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003001/1.062, allocations: 0.8087 MB / 1.007 GB, free: 11.36 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0008378/1.063, allocations: 1.255 MB / 1.008 GB, free: 10.08 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00593/1.069, allocations: 0.6163 MB / 1.009 GB, free: 9.457 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003655/1.069, allocations: 160 kB / 1.009 GB, free: 9.301 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 1.141e-05/1.069, allocations: 0 / 1.009 GB, free: 9.301 MB / 0.7325 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.007347/1.077, allocations: 4.453 MB / 1.013 GB, free: 5.008 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.912e-05/1.077, allocations: 28 kB / 1.013 GB, free: 4.98 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.04e-05/1.077, allocations: 52 kB / 1.013 GB, free: 4.93 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002572/1.079, allocations: 0.7839 MB / 1.014 GB, free: 4.199 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.636e-05/1.08, allocations: 69.75 kB / 1.014 GB, free: 4.145 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005635/1.085, allocations: 0.5584 MB / 1.015 GB, free: 3.582 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003442/1.086, allocations: 154.7 kB / 1.015 GB, free: 3.434 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 142 * 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 (436): * Single equations (assignments): 434 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.005194/1.091, allocations: 2.498 MB / 1.017 GB, free: 0.9766 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002344/1.093, allocations: 0.5482 MB / 1.018 GB, free: 432 kB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.007851/1.101, allocations: 3.907 MB / 1.022 GB, free: 12.47 MB / 0.7481 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.388e-05/1.101, allocations: 28 kB / 1.022 GB, free: 12.44 MB / 0.7481 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.367e-05/1.101, allocations: 0 / 1.022 GB, free: 12.44 MB / 0.7481 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.004861/1.106, allocations: 3.008 MB / 1.025 GB, free: 9.379 MB / 0.7481 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02104/1.127, allocations: 9.72 MB / 1.034 GB, free: 15.62 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.234e-05/1.127, allocations: 4.094 kB / 1.034 GB, free: 15.62 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002443/1.129, allocations: 0.5981 MB / 1.035 GB, free: 15.05 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (simulation): time 3.852e-05/1.13, allocations: 12 kB / 1.035 GB, free: 15.04 MB / 0.7637 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002322/1.13, allocations: 75.94 kB / 1.035 GB, free: 14.96 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0006899/1.13, allocations: 1.195 MB / 1.036 GB, free: 13.72 MB / 0.7637 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.394e-06/1.13, allocations: 0 / 1.036 GB, free: 13.72 MB / 0.7637 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.009683/1.14, allocations: 5.651 MB / 1.041 GB, free: 7.973 MB / 0.7637 GB Notification: Performance of postOpt removeConstants (simulation): time 0.006254/1.146, allocations: 1.31 MB / 1.043 GB, free: 6.637 MB / 0.7637 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.002584/1.149, allocations: 55.98 kB / 1.043 GB, free: 6.582 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.006025/1.155, allocations: 384.1 kB / 1.043 GB, free: 6.211 MB / 0.7637 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003572/1.155, allocations: 161.7 kB / 1.043 GB, free: 6.051 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0005771/1.156, allocations: 139.9 kB / 1.043 GB, free: 5.914 MB / 0.7637 GB Notification: Performance of sorting global known variables: time 0.00971/1.166, allocations: 4.258 MB / 1.048 GB, free: 1.688 MB / 0.7637 GB Notification: Performance of sort global known variables: time 2.384e-06/1.166, allocations: 0 / 1.048 GB, free: 1.688 MB / 0.7637 GB Notification: Performance of remove unused functions: time 0.01352/1.179, allocations: 3.237 MB / 1.051 GB, free: 14.44 MB / 0.7794 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 22 (pip.vol[1].dynBal.U,pip.vol[2].dynBal.U,pip.vol[3].dynBal.U,pip.vol[4].dynBal.U,pip.vol[5].dynBal.U,pip.vol[6].dynBal.U,pip.vol[7].dynBal.U,pip.vol[8].dynBal.U,pip.vol[9].dynBal.U,pip.vol[10].dynBal.U,pip1.vol[1].dynBal.U,pip1.vol[2].dynBal.U,pip1.vol[3].dynBal.U,pip1.vol[4].dynBal.U,pip1.vol[5].dynBal.U,pip1.vol[6].dynBal.U,pip1.vol[7].dynBal.U,pip1.vol[8].dynBal.U,pip1.vol[9].dynBal.U,pip1.vol[10].dynBal.U,senTem.T,senTem1.T) * 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 (259): * Single equations (assignments): 251 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 6 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.01238/1.192, allocations: 6.593 MB / 1.057 GB, free: 7.793 MB / 0.7794 GB Notification: Performance of simCode: created initialization part: time 0.01155/1.203, allocations: 6.038 MB / 1.063 GB, free: 1.945 MB / 0.7794 GB Notification: Performance of simCode: created event and clocks part: time 1.479e-05/1.203, allocations: 4.562 kB / 1.063 GB, free: 1.941 MB / 0.7794 GB Notification: Performance of simCode: created simulation system equations: time 0.002966/1.206, allocations: 1.588 MB / 1.065 GB, free: 404 kB / 0.7794 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.02713/1.234, allocations: 3.953 MB / 1.068 GB, free: 12.52 MB / 0.795 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1842/1.418, allocations: 63.24 MB / 1.13 GB, free: 8.305 MB / 0.8575 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.004814/1.423, allocations: 4.519 MB / 1.135 GB, free: 3.762 MB / 0.8575 GB Notification: Performance of simCode: alias equations: time 0.01077/1.433, allocations: 2.851 MB / 1.137 GB, free: 0.9102 MB / 0.8575 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00579/1.439, allocations: 2.549 MB / 1.14 GB, free: 14.39 MB / 0.8731 GB Notification: Performance of SimCode: time 1.232e-06/1.439, allocations: 0 / 1.14 GB, free: 14.39 MB / 0.8731 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 1.227/2.666, allocations: 173.8 MB / 1.31 GB, free: 362.6 MB / 0.9981 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002079/2.667, allocations: 261.7 kB / 1.31 GB, free: 362.2 MB / 0.9981 GB Notification: Performance of buildModelFMU: Generate platform static: time 5.635/8.302, allocations: 0 / 1.31 GB, free: 362.2 MB / 0.9981 GB (rm -f Buildings_8_Buildings.Fluid.FixedResistances.Examples.Pipe.pipe ; mkfifo Buildings_8_Buildings.Fluid.FixedResistances.Examples.Pipe.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.FixedResistances.Examples.Pipe.pipe >> ../files/Buildings_8_Buildings.Fluid.FixedResistances.Examples.Pipe.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_Buildings_8_Buildings_Fluid_FixedResistances_Examples_Pipe_fmu --startTime=0 --stopTime=120 --timeout=50 --tolerance=1e-06 Buildings_8_Buildings_Fluid_FixedResistances_Examples_Pipe.fmu > Buildings_8_Buildings.Fluid.FixedResistances.Examples.Pipe.pipe 2>&1)