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 0.00138/0.00138, allocations: 108 kB / 15.61 MB, free: 152 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001395/0.001395, allocations: 194.7 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 1.359/1.359, allocations: 222.9 MB / 240.2 MB, free: 4.371 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9001/0.9001, allocations: 135.1 MB / 425.5 MB, free: 11.95 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001197/0.001197, allocations: 60.12 kB / 0.5053 GB, free: 5.332 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1398/0.141, allocations: 80.93 MB / 0.5844 GB, free: 4.559 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Examples.Performance.Example1v2): time 0.3261/0.4672, allocations: 80.6 MB / 0.6631 GB, free: 3.008 MB / 0.4981 GB Notification: Performance of NFInst.instExpressions: time 0.02591/0.4931, allocations: 19.24 MB / 0.6819 GB, free: 5.281 MB / 0.5137 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004182/0.4973, allocations: 107.6 kB / 0.682 GB, free: 5.242 MB / 0.5137 GB Notification: Performance of NFTyping.typeComponents: time 0.003532/0.5009, allocations: 1.156 MB / 0.6831 GB, free: 4.555 MB / 0.5137 GB Notification: Performance of NFTyping.typeBindings: time 0.008315/0.5092, allocations: 2.765 MB / 0.6858 GB, free: 2.941 MB / 0.5137 GB Notification: Performance of NFTyping.typeClassSections: time 0.006482/0.5157, allocations: 2.375 MB / 0.6881 GB, free: 1.684 MB / 0.5137 GB Notification: Performance of NFFlatten.flatten: time 0.02867/0.5444, allocations: 26.81 MB / 0.7143 GB, free: 5.5 MB / 0.5294 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01973/0.5642, allocations: 17.05 MB / 0.731 GB, free: 6.758 MB / 0.545 GB Notification: Performance of NFEvalConstants.evaluate: time 0.02089/0.5851, allocations: 11.24 MB / 0.7419 GB, free: 11.55 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.01948/0.6046, allocations: 11.68 MB / 0.7533 GB, free: 15.83 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.004789/0.6094, allocations: 1.281 MB / 0.7546 GB, free: 14.55 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01088/0.6203, allocations: 2.568 MB / 0.7571 GB, free: 11.98 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.007812/0.6282, allocations: 3.631 MB / 0.7606 GB, free: 8.34 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.01443/0.6426, allocations: 6.485 MB / 0.767 GB, free: 1.828 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.02433/0.667, allocations: 18.32 MB / 0.7849 GB, free: 15.46 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 6.923e-06/0.667, allocations: 3.938 kB / 0.7849 GB, free: 15.46 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.974e-06/0.667, allocations: 4 kB / 0.7849 GB, free: 15.45 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 0.0005564/0.6676, allocations: 0 / 0.7849 GB, free: 15.45 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 0.04015/0.7078, allocations: 12.21 MB / 0.7968 GB, free: 3.137 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 4.318e-05/0.7078, allocations: 12.03 kB / 0.7968 GB, free: 3.125 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009313/0.7172, allocations: 1.265 MB / 0.798 GB, free: 1.848 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.02478/0.742, allocations: 9.655 MB / 0.8075 GB, free: 8.109 MB / 0.6231 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0006555/0.7427, allocations: 444.1 kB / 0.8079 GB, free: 7.676 MB / 0.6231 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.003969/0.7467, allocations: 0.5818 MB / 0.8085 GB, free: 7.094 MB / 0.6231 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03492/0.7816, allocations: 14.63 MB / 0.8227 GB, free: 8.199 MB / 0.6387 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0003207/0.782, allocations: 15.84 kB / 0.8228 GB, free: 8.184 MB / 0.6387 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.003049/0.785, allocations: 240 kB / 0.823 GB, free: 7.949 MB / 0.6387 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001142/0.7852, allocations: 136 kB / 0.8231 GB, free: 7.816 MB / 0.6387 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0374/0.8226, allocations: 19.76 MB / 0.8424 GB, free: 4.039 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 0.5788/1.401, allocations: 60.25 MB / 0.9013 GB, free: 177.7 MB / 0.67 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01649/1.418, allocations: 9.164 MB / 0.9102 GB, free: 174 MB / 0.67 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0129/1.431, allocations: 8.597 MB / 0.9186 GB, free: 170.5 MB / 0.67 GB Notification: Performance of preOpt evalFunc (simulation): time 0.05132/1.482, allocations: 27.44 MB / 0.9454 GB, free: 155.2 MB / 0.67 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.011/1.493, allocations: 7.64 MB / 0.9529 GB, free: 150.5 MB / 0.67 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.01507/1.508, allocations: 4.493 MB / 0.9572 GB, free: 148.8 MB / 0.67 GB Notification: Performance of pre-optimization done (n=299): time 2.324e-05/1.508, allocations: 3.156 kB / 0.9572 GB, free: 148.8 MB / 0.67 GB Notification: Performance of matching and sorting (n=299): time 0.04571/1.554, allocations: 23.31 MB / 0.98 GB, free: 128.6 MB / 0.67 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.014e-05/1.554, allocations: 81.77 kB / 0.9801 GB, free: 128.5 MB / 0.67 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01185/1.566, allocations: 8.249 MB / 0.9881 GB, free: 120.3 MB / 0.67 GB Notification: Performance of collectPreVariables (initialization): time 0.001884/1.568, allocations: 101.7 kB / 0.9882 GB, free: 120.2 MB / 0.67 GB Notification: Performance of collectInitialEqns (initialization): time 0.003551/1.572, allocations: 4.082 MB / 0.9922 GB, free: 116.1 MB / 0.67 GB Notification: Performance of collectInitialBindings (initialization): time 0.002589/1.574, allocations: 1.082 MB / 0.9933 GB, free: 115 MB / 0.67 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.004907/1.579, allocations: 1.662 MB / 0.9949 GB, free: 113.4 MB / 0.67 GB Notification: Performance of setup shared object (initialization): time 3.455e-05/1.579, allocations: 305.1 kB / 0.9952 GB, free: 113.1 MB / 0.67 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00798/1.587, allocations: 6.547 MB / 1.002 GB, free: 106.5 MB / 0.67 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.008579/1.596, allocations: 8.319 MB / 1.01 GB, free: 97.35 MB / 0.67 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01721/1.613, allocations: 15.24 MB / 1.025 GB, free: 81.51 MB / 0.67 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.048e-05/1.613, allocations: 16 kB / 1.025 GB, free: 81.5 MB / 0.67 GB Notification: Performance of matching and sorting (n=578) (initialization): time 0.02892/1.642, allocations: 17.57 MB / 1.042 GB, free: 63.88 MB / 0.67 GB Notification: Performance of prepare postOptimizeDAE: time 5.903e-05/1.642, allocations: 53.64 kB / 1.042 GB, free: 63.82 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.153e-05/1.642, allocations: 51.94 kB / 1.042 GB, free: 63.77 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.06981/1.712, allocations: 11.58 MB / 1.053 GB, free: 52.17 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007893/1.72, allocations: 1.549 MB / 1.055 GB, free: 50.61 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004887/1.725, allocations: 3.776 MB / 1.058 GB, free: 46.76 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.009452/1.734, allocations: 344.2 kB / 1.059 GB, free: 46.42 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002207/1.736, allocations: 0.5382 MB / 1.059 GB, free: 45.88 MB / 0.67 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.01315/1.75, allocations: 8.822 MB / 1.068 GB, free: 37.04 MB / 0.67 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.009292/1.759, allocations: 8.28 MB / 1.076 GB, free: 27.91 MB / 0.67 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.01832/1.777, allocations: 15.15 MB / 1.091 GB, free: 12.05 MB / 0.67 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.759e-05/1.777, allocations: 16 kB / 1.091 GB, free: 12.03 MB / 0.67 GB Notification: Performance of matching and sorting (n=578) (initialization_lambda0): time 0.03069/1.808, allocations: 17.41 MB / 1.108 GB, free: 10.52 MB / 0.6857 GB Notification: Performance of prepare postOptimizeDAE: time 7.174e-05/1.808, allocations: 49.7 kB / 1.108 GB, free: 10.47 MB / 0.6857 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.988e-05/1.808, allocations: 48 kB / 1.108 GB, free: 10.42 MB / 0.6857 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.3392/2.148, allocations: 11.13 MB / 1.119 GB, free: 205.7 MB / 0.6857 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.008058/2.156, allocations: 1.549 MB / 1.12 GB, free: 205.7 MB / 0.6857 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008874/2.165, allocations: 8.159 MB / 1.128 GB, free: 202.2 MB / 0.6857 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01098/2.176, allocations: 345.9 kB / 1.129 GB, free: 202.2 MB / 0.6857 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002974/2.179, allocations: 0.5351 MB / 1.129 GB, free: 202.2 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 0.003094/2.182, allocations: 491.5 kB / 1.13 GB, free: 202 MB / 0.6857 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.004049/2.186, allocations: 0.7632 MB / 1.13 GB, free: 202 MB / 0.6857 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02497/2.211, allocations: 14.18 MB / 1.144 GB, free: 197.1 MB / 0.6857 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.191e-05/2.211, allocations: 36.66 kB / 1.144 GB, free: 197.1 MB / 0.6857 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.614e-06/2.211, allocations: 3.938 kB / 1.144 GB, free: 197.1 MB / 0.6857 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.01604/2.227, allocations: 10.78 MB / 1.155 GB, free: 192.3 MB / 0.6857 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.05533/2.282, allocations: 24.58 MB / 1.179 GB, free: 180.9 MB / 0.6857 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.473e-05/2.282, allocations: 0 / 1.179 GB, free: 180.9 MB / 0.6857 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.005827/2.288, allocations: 0.6882 MB / 1.179 GB, free: 180.9 MB / 0.6857 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.07043/2.359, allocations: 10.74 MB / 1.19 GB, free: 179.9 MB / 0.6857 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001538/2.36, allocations: 101.9 kB / 1.19 GB, free: 179.8 MB / 0.6857 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004174/2.364, allocations: 3.122 MB / 1.193 GB, free: 177.8 MB / 0.6857 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.044e-06/2.364, allocations: 0 / 1.193 GB, free: 177.8 MB / 0.6857 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0291/2.394, allocations: 19.18 MB / 1.212 GB, free: 165.2 MB / 0.6857 GB Notification: Performance of postOpt removeConstants (simulation): time 0.006139/2.4, allocations: 1.816 MB / 1.213 GB, free: 163.4 MB / 0.6857 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.003069/2.403, allocations: 75.98 kB / 1.214 GB, free: 163.3 MB / 0.6857 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.007199/2.41, allocations: 206.2 kB / 1.214 GB, free: 163.1 MB / 0.6857 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001383/2.411, allocations: 214.4 kB / 1.214 GB, free: 162.9 MB / 0.6857 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0008229/2.412, allocations: 155.9 kB / 1.214 GB, free: 162.8 MB / 0.6857 GB Notification: Performance of sorting global known variables: time 0.009293/2.422, allocations: 5.695 MB / 1.22 GB, free: 157.1 MB / 0.6857 GB Notification: Performance of sort global known variables: time 2.61e-07/2.422, allocations: 0 / 1.22 GB, free: 157.1 MB / 0.6857 GB Notification: Performance of remove unused functions: time 0.01929/2.441, allocations: 4.773 MB / 1.224 GB, free: 152.5 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 0.002645/2.444, allocations: 0.5947 MB / 1.225 GB, free: 151.9 MB / 0.6857 GB Notification: Performance of simCode: created initialization part: time 0.04667/2.49, allocations: 29.16 MB / 1.253 GB, free: 122.8 MB / 0.6857 GB Notification: Performance of simCode: created event and clocks part: time 1.046e-05/2.49, allocations: 4 kB / 1.253 GB, free: 122.8 MB / 0.6857 GB Notification: Performance of simCode: created simulation system equations: time 0.009436/2.5, allocations: 6.34 MB / 1.26 GB, free: 116.4 MB / 0.6857 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.02525/2.525, allocations: 4.911 MB / 1.264 GB, free: 111.7 MB / 0.6857 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0336/2.559, allocations: 20.61 MB / 1.285 GB, free: 91.11 MB / 0.6857 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.005519/2.564, allocations: 5.234 MB / 1.29 GB, free: 85.84 MB / 0.6857 GB Notification: Performance of simCode: alias equations: time 0.0193/2.584, allocations: 5.007 MB / 1.295 GB, free: 80.83 MB / 0.6857 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.005745/2.589, allocations: 0.9047 MB / 1.295 GB, free: 79.92 MB / 0.6857 GB Notification: Performance of SimCode: time 1.172e-06/2.589, allocations: 0 / 1.295 GB, free: 79.92 MB / 0.6857 GB Notification: Performance of Templates: time 0.5538/3.143, allocations: 229.9 MB / 1.52 GB, free: 130.2 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)