Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-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(BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger") translateModel(BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001425/0.001425, allocations: 106.7 kB / 15.99 MB, free: 6.348 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001159/0.001159, allocations: 191.3 kB / 16.91 MB, free: 6.188 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.294/1.294, allocations: 222.9 MB / 240.6 MB, free: 13.75 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002428/0.002428, allocations: 292.6 kB / 291 MB, free: 14.51 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 1.117/1.117, allocations: 178.5 MB / 0.5076 GB, free: 12.85 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.00259/0.00259, allocations: 99.84 kB / 0.6066 GB, free: 9.66 MB / 462.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1513/0.1539, allocations: 89.14 MB / 0.6936 GB, free: 444 kB / 0.5294 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger): time 0.869/1.023, allocations: 324.7 MB / 1.011 GB, free: 1.488 MB / 0.7325 GB Notification: Performance of NFInst.instExpressions: time 0.02787/1.051, allocations: 29.88 MB / 1.04 GB, free: 1.344 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.00343/1.054, allocations: 89.97 kB / 1.04 GB, free: 1.344 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.004949/1.059, allocations: 1.853 MB / 1.042 GB, free: 1.309 MB / 0.7325 GB Notification: Performance of NFTyping.typeBindings: time 0.01134/1.071, allocations: 4.67 MB / 1.046 GB, free: 1.113 MB / 0.7325 GB Notification: Performance of NFTyping.typeClassSections: time 0.007834/1.078, allocations: 3.384 MB / 1.05 GB, free: 0.9922 MB / 0.7325 GB Notification: Performance of NFFlatten.flatten: time 0.009932/1.088, allocations: 6.962 MB / 1.056 GB, free: 0.9727 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003993/1.092, allocations: 2.796 MB / 1.059 GB, free: 16.6 MB / 0.7481 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01234/1.105, allocations: 5.238 MB / 1.064 GB, free: 16.5 MB / 0.7481 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004855/1.11, allocations: 2.546 MB / 1.067 GB, free: 16.34 MB / 0.7481 GB Notification: Performance of NFPackage.collectConstants: time 0.0006746/1.11, allocations: 295.3 kB / 1.067 GB, free: 16.34 MB / 0.7481 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00854/1.119, allocations: 5.077 MB / 1.072 GB, free: 16.3 MB / 0.7481 GB Notification: Performance of NFScalarize.scalarize: time 0.001214/1.12, allocations: 1.076 MB / 1.073 GB, free: 16.17 MB / 0.7481 GB Notification: Performance of NFVerifyModel.verify: time 0.002413/1.123, allocations: 1.745 MB / 1.075 GB, free: 15.71 MB / 0.7481 GB Notification: Performance of NFConvertDAE.convert: time 0.005737/1.128, allocations: 4.296 MB / 1.079 GB, free: 15.38 MB / 0.7481 GB Notification: Performance of FrontEnd - DAE generated: time 4.889e-06/1.128, allocations: 2.5 kB / 1.079 GB, free: 15.38 MB / 0.7481 GB Notification: Performance of FrontEnd: time 1.593e-06/1.128, allocations: 0 / 1.079 GB, free: 15.38 MB / 0.7481 GB Notification: Performance of Transformations before backend: time 6.362e-05/1.128, allocations: 0 / 1.079 GB, free: 15.38 MB / 0.7481 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 536 * Number of variables: 536 Notification: Performance of Generate backend data structure: time 0.007339/1.136, allocations: 3.702 MB / 1.083 GB, free: 13.44 MB / 0.7481 GB Notification: Performance of prepare preOptimizeDAE: time 3.486e-05/1.136, allocations: 10.66 kB / 1.083 GB, free: 13.44 MB / 0.7481 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009384/1.145, allocations: 1.476 MB / 1.084 GB, free: 12.88 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003519/1.149, allocations: 1.986 MB / 1.086 GB, free: 11.93 MB / 0.7481 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.001125/1.15, allocations: 389.3 kB / 1.086 GB, free: 11.84 MB / 0.7481 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000314/1.15, allocations: 216.6 kB / 1.087 GB, free: 11.84 MB / 0.7481 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005287/1.155, allocations: 3.068 MB / 1.09 GB, free: 10.86 MB / 0.7481 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.855e-05/1.156, allocations: 5.219 kB / 1.09 GB, free: 10.86 MB / 0.7481 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002277/1.156, allocations: 96.58 kB / 1.09 GB, free: 10.86 MB / 0.7481 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.403e-05/1.156, allocations: 93.11 kB / 1.09 GB, free: 10.84 MB / 0.7481 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.006068/1.162, allocations: 3.142 MB / 1.093 GB, free: 10.25 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 0.02133/1.183, allocations: 14.08 MB / 1.107 GB, free: 15.43 MB / 0.7637 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003938/1.187, allocations: 1.655 MB / 1.108 GB, free: 13.78 MB / 0.7637 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001704/1.189, allocations: 0.7747 MB / 1.109 GB, free: 13.01 MB / 0.7637 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0006345/1.19, allocations: 330.3 kB / 1.109 GB, free: 12.64 MB / 0.7637 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.263e-05/1.19, allocations: 50.19 kB / 1.109 GB, free: 12.58 MB / 0.7637 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001259/1.191, allocations: 204.2 kB / 1.109 GB, free: 12.38 MB / 0.7637 GB Notification: Performance of pre-optimization done (n=110): time 3.537e-06/1.191, allocations: 3.938 kB / 1.109 GB, free: 12.38 MB / 0.7637 GB Notification: Performance of matching and sorting (n=110): time 0.00568/1.197, allocations: 2.356 MB / 1.112 GB, free: 10.04 MB / 0.7637 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.136e-05/1.197, allocations: 60.41 kB / 1.112 GB, free: 9.965 MB / 0.7637 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004003/1.201, allocations: 2.539 MB / 1.114 GB, free: 7.41 MB / 0.7637 GB Notification: Performance of collectPreVariables (initialization): time 0.0002757/1.201, allocations: 61.7 kB / 1.114 GB, free: 7.344 MB / 0.7637 GB Notification: Performance of collectInitialEqns (initialization): time 0.001068/1.202, allocations: 1.273 MB / 1.116 GB, free: 6.062 MB / 0.7637 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003708/1.202, allocations: 383.5 kB / 1.116 GB, free: 5.691 MB / 0.7637 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006738/1.203, allocations: 383 kB / 1.116 GB, free: 5.312 MB / 0.7637 GB Notification: Performance of setup shared object (initialization): time 0.0001202/1.203, allocations: 309.1 kB / 1.117 GB, free: 5.008 MB / 0.7637 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002435/1.206, allocations: 0.9664 MB / 1.118 GB, free: 4.039 MB / 0.7637 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002975/1.209, allocations: 1.581 MB / 1.119 GB, free: 2.199 MB / 0.7637 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004525/1.213, allocations: 2.245 MB / 1.121 GB, free: 15.82 MB / 0.7794 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.113e-06/1.213, allocations: 4 kB / 1.121 GB, free: 15.82 MB / 0.7794 GB Notification: Performance of matching and sorting (n=210) (initialization): time 0.006559/1.22, allocations: 2.797 MB / 1.124 GB, free: 13.07 MB / 0.7794 GB Notification: Performance of prepare postOptimizeDAE: time 7.664e-05/1.22, allocations: 67.41 kB / 1.124 GB, free: 13 MB / 0.7794 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.281e-05/1.22, allocations: 15.98 kB / 1.124 GB, free: 12.98 MB / 0.7794 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.537e-05/1.22, allocations: 24 kB / 1.124 GB, free: 12.96 MB / 0.7794 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002886/1.223, allocations: 0.5602 MB / 1.125 GB, free: 12.43 MB / 0.7794 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001452/1.224, allocations: 2.386 MB / 1.127 GB, free: 9.957 MB / 0.7794 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003603/1.228, allocations: 399.4 kB / 1.127 GB, free: 9.566 MB / 0.7794 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002004/1.228, allocations: 91.89 kB / 1.128 GB, free: 9.477 MB / 0.7794 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00327/1.231, allocations: 1.41 MB / 1.129 GB, free: 8.062 MB / 0.7794 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003004/1.234, allocations: 1.581 MB / 1.13 GB, free: 6.234 MB / 0.7794 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.004544/1.239, allocations: 2.233 MB / 1.133 GB, free: 3.863 MB / 0.7794 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 9.688e-06/1.239, allocations: 4 kB / 1.133 GB, free: 3.859 MB / 0.7794 GB Notification: Performance of matching and sorting (n=210) (initialization_lambda0): time 0.006508/1.246, allocations: 2.789 MB / 1.135 GB, free: 1.129 MB / 0.7794 GB Notification: Performance of prepare postOptimizeDAE: time 7.091e-05/1.246, allocations: 73.42 kB / 1.135 GB, free: 1.047 MB / 0.7794 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.681e-05/1.246, allocations: 12.75 kB / 1.135 GB, free: 1.035 MB / 0.7794 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.195e-05/1.246, allocations: 20 kB / 1.135 GB, free: 1.016 MB / 0.7794 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002378/1.248, allocations: 0.5119 MB / 1.136 GB, free: 0.5273 MB / 0.7794 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.64e-05/1.248, allocations: 29.89 kB / 1.136 GB, free: 0.5039 MB / 0.7794 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003399/1.252, allocations: 404 kB / 1.136 GB, free: 112 kB / 0.7794 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001724/1.252, allocations: 95.89 kB / 1.136 GB, free: 16 kB / 0.7794 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 59 * Number of states: 0 () * Number of discrete variables: 4 (masExcRev.i2_w,masExcRev.i1_w,masExcFor.i2_w,masExcFor.i1_w) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (208): * Single equations (assignments): 202 * Array equations: 0 * Algorithm blocks: 2 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * 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): 4 systems {1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0005146/1.252, allocations: 293.1 kB / 1.137 GB, free: 15.75 MB / 0.795 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004773/1.253, allocations: 264.8 kB / 1.137 GB, free: 15.48 MB / 0.795 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004222/1.257, allocations: 1.846 MB / 1.139 GB, free: 13.64 MB / 0.795 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.212e-05/1.257, allocations: 12 kB / 1.139 GB, free: 13.62 MB / 0.795 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.19e-06/1.257, allocations: 0 / 1.139 GB, free: 13.62 MB / 0.795 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.335e-05/1.257, allocations: 7.922 kB / 1.139 GB, free: 13.62 MB / 0.795 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.007885/1.265, allocations: 4.498 MB / 1.143 GB, free: 9.047 MB / 0.795 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.508e-06/1.265, allocations: 8 kB / 1.143 GB, free: 9.039 MB / 0.795 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001617/1.267, allocations: 305.7 kB / 1.143 GB, free: 8.754 MB / 0.795 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.69e-05/1.267, allocations: 15.94 kB / 1.144 GB, free: 8.738 MB / 0.795 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 8.768e-05/1.267, allocations: 31.98 kB / 1.144 GB, free: 8.707 MB / 0.795 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001282/1.268, allocations: 2.367 MB / 1.146 GB, free: 6.258 MB / 0.795 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.024e-05/1.268, allocations: 8 kB / 1.146 GB, free: 6.25 MB / 0.795 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003969/1.272, allocations: 1.975 MB / 1.148 GB, free: 4.184 MB / 0.795 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001004/1.273, allocations: 0.5211 MB / 1.148 GB, free: 3.641 MB / 0.795 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003344/1.273, allocations: 35.92 kB / 1.148 GB, free: 3.605 MB / 0.795 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002361/1.276, allocations: 266.2 kB / 1.149 GB, free: 3.348 MB / 0.795 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001364/1.276, allocations: 75.23 kB / 1.149 GB, free: 3.277 MB / 0.795 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000153/1.276, allocations: 74.28 kB / 1.149 GB, free: 3.207 MB / 0.795 GB Notification: Performance of sorting global known variables: time 0.002797/1.279, allocations: 1.747 MB / 1.15 GB, free: 1.457 MB / 0.795 GB Notification: Performance of sort global known variables: time 2.3e-07/1.279, allocations: 0 / 1.15 GB, free: 1.457 MB / 0.795 GB Notification: Performance of remove unused functions: time 0.003194/1.282, allocations: 1.302 MB / 1.152 GB, free: 156 kB / 0.795 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 25 * 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 simulation (110): * Single equations (assignments): 106 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * 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): 4 systems {1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0007733/1.283, allocations: 374.4 kB / 1.152 GB, free: 15.82 MB / 0.8106 GB Notification: Performance of simCode: created initialization part: time 0.008751/1.292, allocations: 3.762 MB / 1.156 GB, free: 12.14 MB / 0.8106 GB Notification: Performance of simCode: created event and clocks part: time 6.802e-06/1.292, allocations: 4 kB / 1.156 GB, free: 12.13 MB / 0.8106 GB Notification: Performance of simCode: created simulation system equations: time 0.001836/1.293, allocations: 0.8109 MB / 1.157 GB, free: 11.36 MB / 0.8106 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004936/1.298, allocations: 1.214 MB / 1.158 GB, free: 10.17 MB / 0.8106 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007574/1.306, allocations: 5.292 MB / 1.163 GB, free: 4.789 MB / 0.8106 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001299/1.307, allocations: 1.676 MB / 1.165 GB, free: 3.078 MB / 0.8106 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000826/1.308, allocations: 223.3 kB / 1.165 GB, free: 2.859 MB / 0.8106 GB Notification: Performance of SimCode: time 6.11e-07/1.308, allocations: 0 / 1.165 GB, free: 2.859 MB / 0.8106 GB Notification: Performance of Templates: time 0.09316/1.401, allocations: 85.96 MB / 1.249 GB, free: 13.18 MB / 0.9044 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.sim & ./BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe 2>&1)