Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness.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.Validation.ConstantEffectiveness,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness") translateModel(Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001368/0.001368, allocations: 115.3 kB / 15.34 MB, free: 0.5156 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001653/0.001653, allocations: 192.8 kB / 16.25 MB, free: 6.621 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.488/1.488, allocations: 205.1 MB / 222.1 MB, free: 4.711 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 1.696/1.696, allocations: 292.2 MB / 0.5485 GB, free: 13.69 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 0.001339/0.001339, allocations: 61.89 kB / 0.671 GB, free: 26.11 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2358/0.2372, allocations: 114.6 MB / 0.7828 GB, free: 13.96 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness): time 0.621/0.8583, allocations: 197.4 MB / 0.9756 GB, free: 5.383 MB / 0.7325 GB Notification: Performance of NFInst.instExpressions: time 0.01027/0.8686, allocations: 7.527 MB / 0.983 GB, free: 5.168 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002138/0.8708, allocations: 39.11 kB / 0.983 GB, free: 5.168 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.002022/0.8729, allocations: 0.5943 MB / 0.9836 GB, free: 5.16 MB / 0.7325 GB Notification: Performance of NFTyping.typeBindings: time 0.005604/0.8785, allocations: 1.839 MB / 0.9854 GB, free: 5.062 MB / 0.7325 GB Notification: Performance of NFTyping.typeClassSections: time 0.003145/0.8816, allocations: 1.06 MB / 0.9864 GB, free: 5.023 MB / 0.7325 GB Notification: Performance of NFFlatten.flatten: time 0.004251/0.8859, allocations: 2.679 MB / 0.9891 GB, free: 4.895 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001467/0.8874, allocations: 0.9618 MB / 0.99 GB, free: 4.488 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003902/0.8913, allocations: 1.57 MB / 0.9915 GB, free: 4.023 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001648/0.893, allocations: 0.8571 MB / 0.9924 GB, free: 3.742 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0002045/0.8932, allocations: 107.6 kB / 0.9925 GB, free: 3.738 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003447/0.8966, allocations: 1.897 MB / 0.9943 GB, free: 3.363 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.0003384/0.897, allocations: 333.4 kB / 0.9946 GB, free: 3.203 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.0007878/0.8978, allocations: 0.6131 MB / 0.9952 GB, free: 2.84 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.003358/0.9011, allocations: 2.207 MB / 0.9974 GB, free: 2.168 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 5.961e-06/0.9012, allocations: 6.594 kB / 0.9974 GB, free: 2.164 MB / 0.7325 GB Notification: Performance of FrontEnd: time 1.553e-06/0.9012, allocations: 0 / 0.9974 GB, free: 2.164 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 1.645e-05/0.9012, allocations: 3.938 kB / 0.9974 GB, free: 2.16 MB / 0.7325 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 177 * Number of variables: 177 Notification: Performance of Generate backend data structure: time 0.003584/0.9048, allocations: 1.671 MB / 0.999 GB, free: 17.09 MB / 0.7481 GB Notification: Performance of prepare preOptimizeDAE: time 4.328e-05/0.9048, allocations: 10.97 kB / 0.9991 GB, free: 17.09 MB / 0.7481 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00223/0.9071, allocations: 430.4 kB / 0.9995 GB, free: 17 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001627/0.9087, allocations: 0.9135 MB / 1 GB, free: 16.46 MB / 0.7481 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005356/0.9093, allocations: 170.3 kB / 1.001 GB, free: 16.43 MB / 0.7481 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001093/0.9094, allocations: 68.44 kB / 1.001 GB, free: 16.41 MB / 0.7481 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002148/0.9115, allocations: 1.096 MB / 1.002 GB, free: 15.99 MB / 0.7481 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.044e-05/0.9116, allocations: 1.812 kB / 1.002 GB, free: 15.99 MB / 0.7481 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.297e-05/0.9117, allocations: 29.47 kB / 1.002 GB, free: 15.97 MB / 0.7481 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.961e-05/0.9117, allocations: 34.75 kB / 1.002 GB, free: 15.97 MB / 0.7481 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002626/0.9143, allocations: 1.197 MB / 1.003 GB, free: 15.61 MB / 0.7481 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 0.005961/0.9203, allocations: 4.115 MB / 1.007 GB, free: 12.9 MB / 0.7481 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002301/0.9226, allocations: 0.8643 MB / 1.008 GB, free: 12.65 MB / 0.7481 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001194/0.9238, allocations: 0.4963 MB / 1.008 GB, free: 12.5 MB / 0.7481 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0007673/0.9246, allocations: 0.6317 MB / 1.009 GB, free: 11.84 MB / 0.7481 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001387/0.926, allocations: 0.5913 MB / 1.009 GB, free: 11.63 MB / 0.7481 GB Notification: Performance of pre-optimization done (n=57): time 4.088e-06/0.926, allocations: 4 kB / 1.009 GB, free: 11.62 MB / 0.7481 GB Notification: Performance of matching and sorting (n=57): time 0.003802/0.9298, allocations: 1.407 MB / 1.011 GB, free: 11.2 MB / 0.7481 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.467e-05/0.9299, allocations: 84.61 kB / 1.011 GB, free: 11.1 MB / 0.7481 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000945/0.9309, allocations: 0.8403 MB / 1.012 GB, free: 10.69 MB / 0.7481 GB Notification: Performance of collectPreVariables (initialization): time 8.768e-05/0.931, allocations: 41.61 kB / 1.012 GB, free: 10.65 MB / 0.7481 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003281/0.9313, allocations: 431.6 kB / 1.012 GB, free: 10.28 MB / 0.7481 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001721/0.9315, allocations: 188.4 kB / 1.012 GB, free: 10.12 MB / 0.7481 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002342/0.9317, allocations: 130.8 kB / 1.012 GB, free: 10.04 MB / 0.7481 GB Notification: Performance of setup shared object (initialization): time 0.0001205/0.9318, allocations: 335 kB / 1.013 GB, free: 9.711 MB / 0.7481 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001144/0.933, allocations: 423.3 kB / 1.013 GB, free: 9.512 MB / 0.7481 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001223/0.9342, allocations: 0.5477 MB / 1.014 GB, free: 9.176 MB / 0.7481 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002243/0.9365, allocations: 0.9021 MB / 1.015 GB, free: 8.688 MB / 0.7481 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.088e-06/0.9365, allocations: 0 / 1.015 GB, free: 8.688 MB / 0.7481 GB Notification: Performance of matching and sorting (n=70) (initialization): time 0.002803/0.9393, allocations: 1.08 MB / 1.016 GB, free: 8.152 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 4.055e-05/0.9394, allocations: 33.64 kB / 1.016 GB, free: 8.121 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.343e-06/0.9394, allocations: 2.531 kB / 1.016 GB, free: 8.121 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.9e-05/0.9394, allocations: 5.375 kB / 1.016 GB, free: 8.121 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001303/0.9407, allocations: 239 kB / 1.016 GB, free: 8.051 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.000706/0.9414, allocations: 1.198 MB / 1.017 GB, free: 6.844 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001203/0.9426, allocations: 163.5 kB / 1.017 GB, free: 6.762 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.93e-05/0.9427, allocations: 30.09 kB / 1.017 GB, free: 6.75 MB / 0.7481 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001499/0.9442, allocations: 0.6206 MB / 1.018 GB, free: 6.395 MB / 0.7481 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001218/0.9455, allocations: 0.5355 MB / 1.018 GB, free: 6.062 MB / 0.7481 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002168/0.9476, allocations: 0.8948 MB / 1.019 GB, free: 5.582 MB / 0.7481 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.564e-06/0.9477, allocations: 2.625 kB / 1.019 GB, free: 5.582 MB / 0.7481 GB Notification: Performance of matching and sorting (n=70) (initialization_lambda0): time 0.002649/0.9503, allocations: 1.076 MB / 1.02 GB, free: 5.047 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 3.216e-05/0.9503, allocations: 31.3 kB / 1.02 GB, free: 5.016 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.001e-06/0.9504, allocations: 6.516 kB / 1.02 GB, free: 5.012 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 6.712e-06/0.9504, allocations: 5.562 kB / 1.02 GB, free: 5.012 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009708/0.9513, allocations: 210.1 kB / 1.021 GB, free: 4.949 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.783e-06/0.9514, allocations: 4.812 kB / 1.021 GB, free: 4.949 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0011/0.9525, allocations: 152.6 kB / 1.021 GB, free: 4.875 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.028e-05/0.9525, allocations: 36.03 kB / 1.021 GB, free: 4.859 MB / 0.7481 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 5 (trapezoid.count,$PRE.trapezoid.count,trapezoid.T_start,$PRE.trapezoid.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (69): * Single equations (assignments): 66 * Array equations: 0 * Algorithm blocks: 1 * 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 0.0002925/0.9528, allocations: 218.7 kB / 1.021 GB, free: 4.656 MB / 0.7481 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001671/0.953, allocations: 98.88 kB / 1.021 GB, free: 4.605 MB / 0.7481 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002888/0.9559, allocations: 1.123 MB / 1.022 GB, free: 4.004 MB / 0.7481 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.376e-05/0.9559, allocations: 13.05 kB / 1.022 GB, free: 4 MB / 0.7481 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.322e-06/0.956, allocations: 0 / 1.022 GB, free: 4 MB / 0.7481 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.175e-06/0.956, allocations: 3.938 kB / 1.022 GB, free: 3.996 MB / 0.7481 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004508/0.9605, allocations: 2.322 MB / 1.024 GB, free: 2.477 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.713e-06/0.9605, allocations: 1.781 kB / 1.024 GB, free: 2.477 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001003/0.9615, allocations: 206.7 kB / 1.025 GB, free: 2.418 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (simulation): time 7.865e-06/0.9615, allocations: 6.5 kB / 1.025 GB, free: 2.418 MB / 0.7481 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.651e-05/0.9616, allocations: 18.83 kB / 1.025 GB, free: 2.406 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0006018/0.9622, allocations: 1.192 MB / 1.026 GB, free: 1.207 MB / 0.7481 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.224e-05/0.9622, allocations: 10.22 kB / 1.026 GB, free: 1.199 MB / 0.7481 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002786/0.965, allocations: 1.211 MB / 1.027 GB, free: 500 kB / 0.7481 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004855/0.9655, allocations: 291 kB / 1.027 GB, free: 244 kB / 0.7481 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001368/0.9657, allocations: 19.81 kB / 1.027 GB, free: 228 kB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001036/0.9667, allocations: 137.6 kB / 1.027 GB, free: 168 kB / 0.7481 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001464/0.9669, allocations: 50.78 kB / 1.027 GB, free: 144 kB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.362e-05/0.9669, allocations: 34.56 kB / 1.028 GB, free: 128 kB / 0.7481 GB Notification: Performance of sorting global known variables: time 0.0007971/0.9678, allocations: 0.5783 MB / 1.028 GB, free: 15.79 MB / 0.7637 GB Notification: Performance of sort global known variables: time 2.51e-07/0.9678, allocations: 0 / 1.028 GB, free: 15.79 MB / 0.7637 GB Notification: Performance of remove unused functions: time 0.001264/0.969, allocations: 486.7 kB / 1.029 GB, free: 15.69 MB / 0.7637 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 12 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,trapezoid.T_start,trapezoid.count) * Number of discrete states: 1 (trapezoid.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (63): * Single equations (assignments): 57 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 2 * 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 0.0006344/0.9697, allocations: 301.3 kB / 1.029 GB, free: 15.51 MB / 0.7637 GB Notification: Performance of simCode: created initialization part: time 0.004737/0.9744, allocations: 1.679 MB / 1.03 GB, free: 14.71 MB / 0.7637 GB Notification: Performance of simCode: created event and clocks part: time 5.08e-06/0.9744, allocations: 4.062 kB / 1.03 GB, free: 14.71 MB / 0.7637 GB Notification: Performance of simCode: created simulation system equations: time 0.001552/0.976, allocations: 0.5529 MB / 1.031 GB, free: 14.47 MB / 0.7637 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002005/0.978, allocations: 439 kB / 1.031 GB, free: 14.24 MB / 0.7637 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004132/0.9822, allocations: 2.267 MB / 1.034 GB, free: 12.71 MB / 0.7637 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005719/0.9827, allocations: 1.045 MB / 1.035 GB, free: 11.86 MB / 0.7637 GB Notification: Performance of simCode: alias equations: time 0.001297/0.9841, allocations: 281.6 kB / 1.035 GB, free: 11.72 MB / 0.7637 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002726/0.9843, allocations: 85.95 kB / 1.035 GB, free: 11.7 MB / 0.7637 GB Notification: Performance of SimCode: time 6.01e-07/0.9843, allocations: 0 / 1.035 GB, free: 11.7 MB / 0.7637 GB Notification: Performance of Templates: time 0.03288/1.017, allocations: 19.22 MB / 1.054 GB, free: 9.938 MB / 0.7794 GB make -j1 -f Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness.makefile (rm -f Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness.pipe ; mkfifo Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness.pipe >> ../files/Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness.sim & ./Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.HeatExchangers.Validation.ConstantEffectiveness.pipe 2>&1)