Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2.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: translateModel(IDEAS.Fluid.Examples.Performance.Example1v2,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2") translateModel(IDEAS.Fluid.Examples.Performance.Example1v2,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001884/0.001884, allocations: 108 kB / 15.61 MB, free: 148 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002736/0.002736, allocations: 192 kB / 16.53 MB, free: 6.664 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.453/1.453, allocations: 222.9 MB / 240.2 MB, free: 4.391 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 1.06/1.06, allocations: 135.6 MB / 425.9 MB, free: 11.84 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.002423/0.002423, allocations: 65.23 kB / 0.5058 GB, free: 4.863 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1963/0.1988, allocations: 81.02 MB / 0.585 GB, free: 3.965 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Examples.Performance.Example1v2): time 0.4043/0.6031, allocations: 80.59 MB / 0.6637 GB, free: 2.52 MB / 0.4981 GB Notification: Performance of NFInst.instExpressions: time 0.0435/0.6467, allocations: 19.26 MB / 0.6825 GB, free: 4.777 MB / 0.5137 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.007393/0.6542, allocations: 106.5 kB / 0.6826 GB, free: 4.738 MB / 0.5137 GB Notification: Performance of NFTyping.typeComponents: time 0.006396/0.6607, allocations: 1.141 MB / 0.6837 GB, free: 4.066 MB / 0.5137 GB Notification: Performance of NFTyping.typeBindings: time 0.01385/0.6746, allocations: 2.768 MB / 0.6864 GB, free: 2.449 MB / 0.5137 GB Notification: Performance of NFTyping.typeClassSections: time 0.00889/0.6835, allocations: 2.37 MB / 0.6887 GB, free: 1.199 MB / 0.5137 GB Notification: Performance of NFFlatten.flatten: time 0.04433/0.7278, allocations: 26.83 MB / 0.7149 GB, free: 4.938 MB / 0.5294 GB Notification: Performance of NFFlatten.resolveConnections: time 0.02865/0.7565, allocations: 17.04 MB / 0.7316 GB, free: 5.996 MB / 0.545 GB Notification: Performance of NFEvalConstants.evaluate: time 0.02883/0.7854, allocations: 11.24 MB / 0.7425 GB, free: 10.79 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.02535/0.8108, allocations: 11.68 MB / 0.7539 GB, free: 15.07 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.006065/0.8169, allocations: 1.277 MB / 0.7552 GB, free: 13.79 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01248/0.8294, allocations: 2.572 MB / 0.7577 GB, free: 11.21 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.008932/0.8384, allocations: 3.631 MB / 0.7612 GB, free: 7.574 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.01692/0.8553, allocations: 6.497 MB / 0.7676 GB, free: 1.051 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.02899/0.8844, allocations: 18.31 MB / 0.7855 GB, free: 14.68 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 5.59e-06/0.8844, allocations: 0 / 0.7855 GB, free: 14.68 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.794e-06/0.8844, allocations: 0 / 0.7855 GB, free: 14.68 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 0.0005296/0.8849, allocations: 0 / 0.7855 GB, free: 14.68 MB / 0.6075 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1418 * Number of variables: 1418 Notification: Performance of Generate backend data structure: time 0.03943/0.9244, allocations: 12.21 MB / 0.7974 GB, free: 2.371 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 4.565e-05/0.9244, allocations: 12.02 kB / 0.7974 GB, free: 2.359 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.008464/0.9329, allocations: 1.257 MB / 0.7986 GB, free: 1.09 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.02321/0.9561, allocations: 9.665 MB / 0.8081 GB, free: 7.344 MB / 0.6231 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005351/0.9567, allocations: 436.1 kB / 0.8085 GB, free: 6.918 MB / 0.6231 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.003638/0.9604, allocations: 0.5818 MB / 0.8091 GB, free: 6.336 MB / 0.6231 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03569/0.9961, allocations: 14.62 MB / 0.8233 GB, free: 7.449 MB / 0.6387 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0003234/0.9964, allocations: 27.78 kB / 0.8234 GB, free: 7.422 MB / 0.6387 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.003352/0.9998, allocations: 240 kB / 0.8236 GB, free: 7.188 MB / 0.6387 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001376/1, allocations: 140 kB / 0.8237 GB, free: 7.051 MB / 0.6387 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0395/1.039, allocations: 19.76 MB / 0.843 GB, free: 3.277 MB / 0.6544 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 0.6597/1.699, allocations: 60.25 MB / 0.9019 GB, free: 177.1 MB / 0.67 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01606/1.715, allocations: 9.165 MB / 0.9108 GB, free: 173.3 MB / 0.67 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.01382/1.729, allocations: 8.586 MB / 0.9192 GB, free: 169.8 MB / 0.67 GB Notification: Performance of preOpt evalFunc (simulation): time 0.05454/1.784, allocations: 27.44 MB / 0.946 GB, free: 154.4 MB / 0.67 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.01227/1.796, allocations: 7.646 MB / 0.9535 GB, free: 149.6 MB / 0.67 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.01628/1.812, allocations: 4.499 MB / 0.9578 GB, free: 147.9 MB / 0.67 GB Notification: Performance of pre-optimization done (n=299): time 2.687e-05/1.812, allocations: 0 / 0.9578 GB, free: 147.9 MB / 0.67 GB Notification: Performance of matching and sorting (n=299): time 0.04916/1.862, allocations: 23.31 MB / 0.9806 GB, free: 127.4 MB / 0.67 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.216e-05/1.862, allocations: 83.05 kB / 0.9807 GB, free: 127.3 MB / 0.67 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01385/1.876, allocations: 8.242 MB / 0.9887 GB, free: 119.2 MB / 0.67 GB Notification: Performance of collectPreVariables (initialization): time 0.002226/1.878, allocations: 99.89 kB / 0.9888 GB, free: 119.1 MB / 0.67 GB Notification: Performance of collectInitialEqns (initialization): time 0.003875/1.882, allocations: 4.093 MB / 0.9928 GB, free: 115 MB / 0.67 GB Notification: Performance of collectInitialBindings (initialization): time 0.002972/1.885, allocations: 1.071 MB / 0.9939 GB, free: 113.9 MB / 0.67 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.006113/1.891, allocations: 1.665 MB / 0.9955 GB, free: 112.2 MB / 0.67 GB Notification: Performance of setup shared object (initialization): time 3.72e-05/1.891, allocations: 301.1 kB / 0.9958 GB, free: 111.9 MB / 0.67 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.008972/1.9, allocations: 6.548 MB / 1.002 GB, free: 105.4 MB / 0.67 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.01055/1.91, allocations: 8.317 MB / 1.01 GB, free: 96.22 MB / 0.67 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.02026/1.931, allocations: 15.25 MB / 1.025 GB, free: 80.38 MB / 0.67 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.694e-05/1.931, allocations: 12 kB / 1.025 GB, free: 80.37 MB / 0.67 GB Notification: Performance of matching and sorting (n=578) (initialization): time 0.03579/1.967, allocations: 17.57 MB / 1.042 GB, free: 62.75 MB / 0.67 GB Notification: Performance of prepare postOptimizeDAE: time 7.605e-05/1.967, allocations: 53.7 kB / 1.042 GB, free: 62.69 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.36e-05/1.967, allocations: 48 kB / 1.042 GB, free: 62.64 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.06669/2.033, allocations: 11.58 MB / 1.054 GB, free: 51.04 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.008466/2.042, allocations: 1.546 MB / 1.055 GB, free: 49.48 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004807/2.047, allocations: 3.782 MB / 1.059 GB, free: 45.62 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.009213/2.056, allocations: 336.4 kB / 1.059 GB, free: 45.29 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002122/2.058, allocations: 0.5421 MB / 1.06 GB, free: 44.75 MB / 0.67 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.01314/2.071, allocations: 8.821 MB / 1.068 GB, free: 35.91 MB / 0.67 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.00929/2.081, allocations: 8.28 MB / 1.077 GB, free: 26.79 MB / 0.67 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.01782/2.099, allocations: 15.15 MB / 1.091 GB, free: 10.92 MB / 0.67 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.1e-05/2.099, allocations: 16 kB / 1.091 GB, free: 10.91 MB / 0.67 GB Notification: Performance of matching and sorting (n=578) (initialization_lambda0): time 0.03114/2.13, allocations: 17.42 MB / 1.108 GB, free: 9.398 MB / 0.6857 GB Notification: Performance of prepare postOptimizeDAE: time 7.343e-05/2.13, allocations: 57.69 kB / 1.108 GB, free: 9.336 MB / 0.6857 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.171e-05/2.13, allocations: 48 kB / 1.108 GB, free: 9.289 MB / 0.6857 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.3289/2.459, allocations: 11.12 MB / 1.119 GB, free: 205.3 MB / 0.6857 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007715/2.467, allocations: 1.548 MB / 1.121 GB, free: 205.3 MB / 0.6857 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008503/2.475, allocations: 8.165 MB / 1.129 GB, free: 201.8 MB / 0.6857 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.009397/2.485, allocations: 344.7 kB / 1.129 GB, free: 201.8 MB / 0.6857 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001839/2.486, allocations: 0.5317 MB / 1.13 GB, free: 201.8 MB / 0.6857 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 217 * Number of states: 0 () * Number of discrete variables: 8 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1,from_dp.y,nRes.y,allowFlowReversal.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (524): * Single equations (assignments): 519 * Array equations: 1 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 3 systems {(2,5), (20,21), (2,5)} Notification: Performance of prepare postOptimizeDAE: time 0.002125/2.489, allocations: 492.7 kB / 1.13 GB, free: 201.6 MB / 0.6857 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002833/2.491, allocations: 0.7668 MB / 1.131 GB, free: 201.6 MB / 0.6857 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02305/2.514, allocations: 14.18 MB / 1.145 GB, free: 196.7 MB / 0.6857 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.805e-05/2.515, allocations: 40.19 kB / 1.145 GB, free: 196.7 MB / 0.6857 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.686e-06/2.515, allocations: 11.58 kB / 1.145 GB, free: 196.7 MB / 0.6857 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.01615/2.531, allocations: 10.77 MB / 1.155 GB, free: 191.9 MB / 0.6857 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.04407/2.575, allocations: 24.57 MB / 1.179 GB, free: 180.5 MB / 0.6857 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.221e-05/2.575, allocations: 1.438 kB / 1.179 GB, free: 180.5 MB / 0.6857 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.005114/2.58, allocations: 0.6903 MB / 1.18 GB, free: 180.5 MB / 0.6857 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.06555/2.646, allocations: 10.74 MB / 1.19 GB, free: 179.4 MB / 0.6857 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001258/2.647, allocations: 103.6 kB / 1.191 GB, free: 179.3 MB / 0.6857 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003755/2.651, allocations: 3.107 MB / 1.194 GB, free: 177.2 MB / 0.6857 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.938e-06/2.651, allocations: 4 kB / 1.194 GB, free: 177.2 MB / 0.6857 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03122/2.682, allocations: 19.18 MB / 1.212 GB, free: 163.7 MB / 0.6857 GB Notification: Performance of postOpt removeConstants (simulation): time 0.005456/2.687, allocations: 1.819 MB / 1.214 GB, free: 161.9 MB / 0.6857 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.003781/2.691, allocations: 71.98 kB / 1.214 GB, free: 161.8 MB / 0.6857 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00728/2.698, allocations: 202.1 kB / 1.214 GB, free: 161.6 MB / 0.6857 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.00161/2.7, allocations: 217.7 kB / 1.215 GB, free: 161.4 MB / 0.6857 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.001309/2.701, allocations: 159.9 kB / 1.215 GB, free: 161.2 MB / 0.6857 GB Notification: Performance of sorting global known variables: time 0.01221/2.714, allocations: 5.691 MB / 1.22 GB, free: 155.6 MB / 0.6857 GB Notification: Performance of sort global known variables: time 3.11e-07/2.714, allocations: 0 / 1.22 GB, free: 155.6 MB / 0.6857 GB Notification: Performance of remove unused functions: time 0.01966/2.733, allocations: 4.776 MB / 1.225 GB, free: 151 MB / 0.6857 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 22 (pump.vol.dynBal.U,hea.outCon.T,vol[1].dynBal.U,vol[2].dynBal.U,vol[3].dynBal.U,vol[4].dynBal.U,vol[5].dynBal.U,vol[6].dynBal.U,vol[7].dynBal.U,vol[8].dynBal.U,vol[9].dynBal.U,vol[10].dynBal.U,vol[11].dynBal.U,vol[12].dynBal.U,vol[13].dynBal.U,vol[14].dynBal.U,vol[15].dynBal.U,vol[16].dynBal.U,vol[17].dynBal.U,vol[18].dynBal.U,vol[19].dynBal.U,vol[20].dynBal.U) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (301): * Single equations (assignments): 292 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 3 systems {(3,4), (2,5), (20,21)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002774/2.736, allocations: 0.5991 MB / 1.226 GB, free: 150.4 MB / 0.6857 GB Notification: Performance of simCode: created initialization part: time 0.04694/2.783, allocations: 29.16 MB / 1.254 GB, free: 121.2 MB / 0.6857 GB Notification: Performance of simCode: created event and clocks part: time 1.257e-05/2.783, allocations: 7.938 kB / 1.254 GB, free: 121.2 MB / 0.6857 GB Notification: Performance of simCode: created simulation system equations: time 0.009719/2.793, allocations: 6.333 MB / 1.26 GB, free: 114.9 MB / 0.6857 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.02659/2.82, allocations: 4.908 MB / 1.265 GB, free: 110.2 MB / 0.6857 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03945/2.859, allocations: 20.6 MB / 1.285 GB, free: 89.61 MB / 0.6857 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.008478/2.868, allocations: 5.238 MB / 1.29 GB, free: 84.33 MB / 0.6857 GB Notification: Performance of simCode: alias equations: time 0.02118/2.889, allocations: 4.996 MB / 1.295 GB, free: 79.33 MB / 0.6857 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.006376/2.895, allocations: 0.9047 MB / 1.296 GB, free: 78.42 MB / 0.6857 GB Notification: Performance of SimCode: time 2.915e-06/2.895, allocations: 0 / 1.296 GB, free: 78.42 MB / 0.6857 GB Notification: Performance of Templates: time 0.5725/3.468, allocations: 230 MB / 1.521 GB, free: 127.9 MB / 0.7013 GB make -j1 -f IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2.makefile (rm -f IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2.sim & ./IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2 -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_dev_IDEAS.Fluid.Examples.Performance.Example1v2.pipe 2>&1)