Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.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: translateModel(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u") translateModel(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001108/0.001108, allocations: 105.4 kB / 15.7 MB, free: 24 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00116/0.00116, allocations: 195.1 kB / 16.64 MB, free: 6.59 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.481/1.481, allocations: 205.1 MB / 222.5 MB, free: 4.555 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 2.014/2.014, allocations: 292.3 MB / 0.549 GB, free: 12.76 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 0.001442/0.001442, allocations: 69.02 kB / 0.6723 GB, free: 25.99 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2421/0.2436, allocations: 114.5 MB / 0.7841 GB, free: 12.75 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u): time 0.06606/0.3097, allocations: 67.09 MB / 0.8496 GB, free: 9.418 MB / 0.67 GB Notification: Performance of NFInst.instExpressions: time 0.02955/0.3393, allocations: 19.31 MB / 0.8685 GB, free: 6.066 MB / 0.6856 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003444/0.3427, allocations: 91.5 kB / 0.8686 GB, free: 5.977 MB / 0.6856 GB Notification: Performance of NFTyping.typeComponents: time 0.003546/0.3463, allocations: 1.208 MB / 0.8698 GB, free: 4.762 MB / 0.6856 GB Notification: Performance of NFTyping.typeBindings: time 0.007425/0.3538, allocations: 2.647 MB / 0.8723 GB, free: 2.105 MB / 0.6856 GB Notification: Performance of NFTyping.typeClassSections: time 0.009717/0.3635, allocations: 3.756 MB / 0.876 GB, free: 14.37 MB / 0.7012 GB Notification: Performance of NFFlatten.flatten: time 0.008265/0.3718, allocations: 5.363 MB / 0.8813 GB, free: 8.984 MB / 0.7012 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003428/0.3753, allocations: 1.903 MB / 0.8831 GB, free: 7.027 MB / 0.7012 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00516/0.3805, allocations: 2.097 MB / 0.8852 GB, free: 4.934 MB / 0.7012 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002811/0.3833, allocations: 1.496 MB / 0.8866 GB, free: 3.434 MB / 0.7012 GB Notification: Performance of NFPackage.collectConstants: time 0.0004819/0.3838, allocations: 196 kB / 0.8868 GB, free: 3.242 MB / 0.7012 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004637/0.3884, allocations: 2.094 MB / 0.8889 GB, free: 1.145 MB / 0.7012 GB Notification: Performance of NFScalarize.scalarize: time 0.0007137/0.3892, allocations: 0.5683 MB / 0.8894 GB, free: 0.5742 MB / 0.7012 GB Notification: Performance of NFVerifyModel.verify: time 0.001738/0.3909, allocations: 1.147 MB / 0.8905 GB, free: 15.42 MB / 0.7169 GB Notification: Performance of NFConvertDAE.convert: time 0.008408/0.3993, allocations: 3.77 MB / 0.8942 GB, free: 11.64 MB / 0.7169 GB Notification: Performance of FrontEnd - DAE generated: time 7.874e-06/0.3994, allocations: 0 / 0.8942 GB, free: 11.64 MB / 0.7169 GB Notification: Performance of FrontEnd: time 2.083e-06/0.3994, allocations: 0 / 0.8942 GB, free: 11.64 MB / 0.7169 GB Notification: Performance of Transformations before backend: time 5.959e-05/0.3995, allocations: 0 / 0.8942 GB, free: 11.64 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: 311 * Number of variables: 311 Notification: Performance of Generate backend data structure: time 0.006499/0.406, allocations: 2.715 MB / 0.8969 GB, free: 8.852 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 5.762e-05/0.4061, allocations: 8.031 kB / 0.8969 GB, free: 8.844 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001831/0.4079, allocations: 373.5 kB / 0.8972 GB, free: 8.477 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003834/0.4117, allocations: 1.804 MB / 0.899 GB, free: 6.621 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.796e-05/0.4119, allocations: 102.5 kB / 0.8991 GB, free: 6.52 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002099/0.4121, allocations: 132 kB / 0.8992 GB, free: 6.391 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002799/0.4149, allocations: 1.445 MB / 0.9006 GB, free: 4.852 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.765e-05/0.4149, allocations: 11.88 kB / 0.9006 GB, free: 4.84 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001198/0.4151, allocations: 52 kB / 0.9007 GB, free: 4.789 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.411e-05/0.4151, allocations: 32 kB / 0.9007 GB, free: 4.758 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002425/0.4175, allocations: 1.09 MB / 0.9018 GB, free: 3.66 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 0.009834/0.4274, allocations: 7.323 MB / 0.9089 GB, free: 11.77 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002097/0.4295, allocations: 1.296 MB / 0.9102 GB, free: 10.36 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008972/0.4304, allocations: 427.5 kB / 0.9106 GB, free: 9.938 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003501/0.4339, allocations: 2.311 MB / 0.9129 GB, free: 7.398 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001028/0.435, allocations: 462.9 kB / 0.9133 GB, free: 6.934 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=66): time 2.925e-06/0.435, allocations: 0 / 0.9133 GB, free: 6.934 MB / 0.7325 GB Notification: Performance of matching and sorting (n=66): time 0.003083/0.4381, allocations: 1.26 MB / 0.9145 GB, free: 5.641 MB / 0.7325 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.799e-05/0.4382, allocations: 119.4 kB / 0.9146 GB, free: 5.5 MB / 0.7325 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002085/0.4403, allocations: 1.493 MB / 0.9161 GB, free: 4.008 MB / 0.7325 GB Notification: Performance of collectPreVariables (initialization): time 0.0001066/0.4404, allocations: 45.7 kB / 0.9161 GB, free: 3.957 MB / 0.7325 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008566/0.4413, allocations: 0.8959 MB / 0.917 GB, free: 3.051 MB / 0.7325 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002462/0.4415, allocations: 244.6 kB / 0.9173 GB, free: 2.809 MB / 0.7325 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003378/0.4419, allocations: 214.4 kB / 0.9175 GB, free: 2.594 MB / 0.7325 GB Notification: Performance of setup shared object (initialization): time 0.000155/0.442, allocations: 349.9 kB / 0.9178 GB, free: 2.246 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009098/0.4429, allocations: 408.9 kB / 0.9182 GB, free: 1.844 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001194/0.4441, allocations: 0.7603 MB / 0.9189 GB, free: 0.9258 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.413/0.8572, allocations: 1.125 MB / 0.92 GB, free: 133.8 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.085e-05/0.8572, allocations: 5.625 kB / 0.92 GB, free: 133.8 MB / 0.7325 GB Notification: Performance of matching and sorting (n=128) (initialization): time 0.003969/0.8612, allocations: 1.331 MB / 0.9213 GB, free: 133.7 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 4.854e-05/0.8613, allocations: 37.59 kB / 0.9214 GB, free: 133.6 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.726e-05/0.8613, allocations: 11.67 kB / 0.9214 GB, free: 133.6 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.153e-05/0.8614, allocations: 16.91 kB / 0.9214 GB, free: 133.6 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001053/0.8624, allocations: 254.1 kB / 0.9216 GB, free: 133.6 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.266e-05/0.8625, allocations: 22.11 kB / 0.9217 GB, free: 133.6 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001222/0.8637, allocations: 137.6 kB / 0.9218 GB, free: 133.6 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001245/0.8638, allocations: 51.36 kB / 0.9218 GB, free: 133.6 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001668/0.8655, allocations: 0.7133 MB / 0.9225 GB, free: 133.5 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001101/0.8666, allocations: 0.743 MB / 0.9233 GB, free: 133.1 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001912/0.8686, allocations: 1.095 MB / 0.9243 GB, free: 132.7 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 8.957e-06/0.8686, allocations: 3.375 kB / 0.9243 GB, free: 132.7 MB / 0.7325 GB Notification: Performance of matching and sorting (n=128) (initialization_lambda0): time 0.002939/0.8715, allocations: 1.309 MB / 0.9256 GB, free: 132.2 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 3.25e-05/0.8716, allocations: 38.2 kB / 0.9256 GB, free: 132.2 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.035e-05/0.8716, allocations: 11.62 kB / 0.9257 GB, free: 132.2 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.792e-05/0.8716, allocations: 14.94 kB / 0.9257 GB, free: 132.2 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008819/0.8725, allocations: 248 kB / 0.9259 GB, free: 132.2 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.833e-05/0.8725, allocations: 23.98 kB / 0.9259 GB, free: 132.2 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001165/0.8737, allocations: 130 kB / 0.9261 GB, free: 132.2 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.52e-05/0.8738, allocations: 53.19 kB / 0.9261 GB, free: 132.1 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 42 * Number of states: 0 () * Number of discrete variables: 6 (TSet.count,$PRE.TSet.count,TSet.T_start,$PRE.TSet.T_start,$whenCondition1,conPI.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (124): * Single equations (assignments): 120 * Array equations: 2 * Algorithm blocks: 1 * Record equations: 1 * 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 0.0003101/0.8741, allocations: 246.4 kB / 0.9263 GB, free: 131.9 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002374/0.8744, allocations: 172 kB / 0.9265 GB, free: 131.9 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002315/0.8767, allocations: 1.11 MB / 0.9276 GB, free: 131.5 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.18e-05/0.8767, allocations: 15.05 kB / 0.9276 GB, free: 131.5 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.221e-05/0.8767, allocations: 0 / 0.9276 GB, free: 131.5 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00195/0.8787, allocations: 0.8183 MB / 0.9284 GB, free: 131.2 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00393/0.8827, allocations: 2.478 MB / 0.9308 GB, free: 130.1 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.011e-06/0.8827, allocations: 0.5156 kB / 0.9308 GB, free: 130.1 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007334/0.8834, allocations: 159.1 kB / 0.931 GB, free: 130.1 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002073/0.8836, allocations: 37.2 kB / 0.931 GB, free: 130.1 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.896e-05/0.8837, allocations: 19.95 kB / 0.931 GB, free: 130 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0009313/0.8846, allocations: 1.474 MB / 0.9325 GB, free: 128.6 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.785e-06/0.8847, allocations: 0.6094 kB / 0.9325 GB, free: 128.6 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003019/0.8877, allocations: 1.575 MB / 0.934 GB, free: 127.9 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005453/0.8883, allocations: 335.3 kB / 0.9343 GB, free: 127.7 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001781/0.8884, allocations: 19.98 kB / 0.9343 GB, free: 127.6 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007773/0.8892, allocations: 56.08 kB / 0.9344 GB, free: 127.6 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001414/0.8894, allocations: 59.69 kB / 0.9345 GB, free: 127.6 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.332e-05/0.8895, allocations: 36.91 kB / 0.9345 GB, free: 127.6 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.001509/0.891, allocations: 0.9976 MB / 0.9355 GB, free: 127.2 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.543e-06/0.891, allocations: 0 / 0.9355 GB, free: 127.2 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.002614/0.8936, allocations: 1.012 MB / 0.9365 GB, free: 127.1 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 6 (vol.dynBal.U,mov.filter.x[1],mov.filter.x[2],conPI.I.y,THeaOut.T,hea.vol.dynBal.U) * Number of discrete variables: 3 ($whenCondition1,TSet.T_start,TSet.count) * Number of discrete states: 1 (TSet.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (74): * Single equations (assignments): 66 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 5 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.00127/0.8949, allocations: 0.5634 MB / 0.937 GB, free: 126.9 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.003707/0.8986, allocations: 1.712 MB / 0.9387 GB, free: 126.3 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 4.739e-06/0.8986, allocations: 0.9688 kB / 0.9387 GB, free: 126.3 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.001286/0.8999, allocations: 0.5562 MB / 0.9392 GB, free: 126 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003714/0.9037, allocations: 0.8151 MB / 0.94 GB, free: 125.8 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005239/0.9089, allocations: 3.109 MB / 0.9431 GB, free: 124.3 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001001/0.9099, allocations: 1.408 MB / 0.9444 GB, free: 123.5 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.001713/0.9117, allocations: 411.3 kB / 0.9448 GB, free: 123.4 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003417/0.912, allocations: 145.5 kB / 0.945 GB, free: 123.4 MB / 0.7325 GB Notification: Performance of SimCode: time 6.61e-07/0.912, allocations: 3.391 kB / 0.945 GB, free: 123.4 MB / 0.7325 GB Notification: Performance of Templates: time 0.05081/0.9628, allocations: 33.45 MB / 0.9776 GB, free: 102.6 MB / 0.7325 GB make -j1 -f Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.makefile (rm -f Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe ; mkfifo Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe >> ../files/Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.sim & ./Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe 2>&1)