Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe.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.FixedResistances.Examples.PlugFlowPipe,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe") translateModel(BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001065/0.001065, allocations: 117.2 kB / 16.37 MB, free: 6.004 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001015/0.001015, allocations: 193.2 kB / 17.31 MB, free: 5.613 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.284/1.284, allocations: 222.9 MB / 241 MB, free: 15.15 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002028/0.002028, allocations: 283.2 kB / 291.4 MB, free: 14.46 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9063/0.9063, allocations: 169.3 MB / 0.4989 GB, free: 4.434 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001697/0.001697, allocations: 96.42 kB / 0.5967 GB, free: 14.39 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1479/0.1496, allocations: 86.98 MB / 0.6816 GB, free: 7.41 MB / 494.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe): time 0.3764/0.526, allocations: 115.1 MB / 0.7941 GB, free: 11.5 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.03339/0.5594, allocations: 26.56 MB / 0.82 GB, free: 0.8789 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004561/0.564, allocations: 115.4 kB / 0.8201 GB, free: 0.7656 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.003004/0.5671, allocations: 1.149 MB / 0.8212 GB, free: 15.61 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.00911/0.5762, allocations: 3.431 MB / 0.8246 GB, free: 12.16 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.006246/0.5825, allocations: 2.341 MB / 0.8269 GB, free: 9.832 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.007993/0.5905, allocations: 6.199 MB / 0.8329 GB, free: 3.613 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002669/0.5932, allocations: 1.912 MB / 0.8348 GB, free: 1.672 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005243/0.5984, allocations: 2.659 MB / 0.8374 GB, free: 15.01 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002435/0.6009, allocations: 1.77 MB / 0.8391 GB, free: 13.23 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 0.0003155/0.6012, allocations: 231.9 kB / 0.8393 GB, free: 13.01 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004398/0.6056, allocations: 2.34 MB / 0.8416 GB, free: 10.66 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.000476/0.6061, allocations: 0.5409 MB / 0.8421 GB, free: 10.12 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.001313/0.6074, allocations: 1.283 MB / 0.8434 GB, free: 8.832 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.00532/0.6127, allocations: 4.104 MB / 0.8474 GB, free: 4.719 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 2.705e-06/0.6128, allocations: 0 / 0.8474 GB, free: 4.719 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.062e-06/0.6128, allocations: 0 / 0.8474 GB, free: 4.719 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 2.258e-05/0.6128, allocations: 0 / 0.8474 GB, free: 4.719 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: 343 * Number of variables: 343 Notification: Performance of Generate backend data structure: time 0.004883/0.6177, allocations: 2.838 MB / 0.8502 GB, free: 1.82 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 2.975e-05/0.6177, allocations: 8.031 kB / 0.8502 GB, free: 1.812 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0005541/0.6183, allocations: 261 kB / 0.8504 GB, free: 1.555 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00377/0.6221, allocations: 2.138 MB / 0.8525 GB, free: 15.36 MB / 0.6231 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.505e-05/0.6221, allocations: 106.6 kB / 0.8526 GB, free: 15.25 MB / 0.6231 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001734/0.6223, allocations: 143.9 kB / 0.8528 GB, free: 15.11 MB / 0.6231 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002177/0.6245, allocations: 1.45 MB / 0.8542 GB, free: 13.59 MB / 0.6231 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.4e-05/0.6246, allocations: 11.86 kB / 0.8542 GB, free: 13.57 MB / 0.6231 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001066/0.6247, allocations: 56 kB / 0.8542 GB, free: 13.52 MB / 0.6231 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.987e-05/0.6247, allocations: 36 kB / 0.8543 GB, free: 13.48 MB / 0.6231 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001729/0.6264, allocations: 1.029 MB / 0.8553 GB, free: 12.45 MB / 0.6231 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 0.007898/0.6344, allocations: 8.112 MB / 0.8632 GB, free: 3.641 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001431/0.6358, allocations: 0.8373 MB / 0.864 GB, free: 2.781 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005824/0.6364, allocations: 381.4 kB / 0.8644 GB, free: 2.41 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001999/0.6384, allocations: 2.807 MB / 0.8671 GB, free: 14.98 MB / 0.6387 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.7e-05/0.6385, allocations: 47.16 kB / 0.8672 GB, free: 14.92 MB / 0.6387 GB Notification: Performance of pre-optimization done (n=85): time 2.615e-06/0.6385, allocations: 0 / 0.8672 GB, free: 14.92 MB / 0.6387 GB Notification: Performance of matching and sorting (n=85): time 0.002168/0.6406, allocations: 1.124 MB / 0.8683 GB, free: 13.8 MB / 0.6387 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.774e-05/0.6407, allocations: 60.06 kB / 0.8683 GB, free: 13.72 MB / 0.6387 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001955/0.6426, allocations: 1.629 MB / 0.8699 GB, free: 12.05 MB / 0.6387 GB Notification: Performance of collectPreVariables (initialization): time 6.316e-05/0.6427, allocations: 41.7 kB / 0.8699 GB, free: 12 MB / 0.6387 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006634/0.6434, allocations: 0.9315 MB / 0.8709 GB, free: 11.06 MB / 0.6387 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002532/0.6436, allocations: 303.6 kB / 0.8711 GB, free: 10.76 MB / 0.6387 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002946/0.644, allocations: 234.6 kB / 0.8714 GB, free: 10.52 MB / 0.6387 GB Notification: Performance of setup shared object (initialization): time 0.0001237/0.6441, allocations: 349.9 kB / 0.8717 GB, free: 10.18 MB / 0.6387 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005482/0.6446, allocations: 325.9 kB / 0.872 GB, free: 9.855 MB / 0.6387 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008058/0.6454, allocations: 0.7071 MB / 0.8727 GB, free: 8.98 MB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001426/0.6469, allocations: 1.081 MB / 0.8738 GB, free: 7.738 MB / 0.6387 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.653e-06/0.6469, allocations: 4 kB / 0.8738 GB, free: 7.734 MB / 0.6387 GB Notification: Performance of matching and sorting (n=144) (initialization): time 0.00208/0.649, allocations: 1.249 MB / 0.875 GB, free: 6.477 MB / 0.6387 GB Notification: Performance of prepare postOptimizeDAE: time 1.896e-05/0.649, allocations: 8.188 kB / 0.875 GB, free: 6.469 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.01e-05/0.6491, allocations: 23.98 kB / 0.875 GB, free: 6.445 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.596e-05/0.6491, allocations: 20 kB / 0.875 GB, free: 6.426 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007738/0.6499, allocations: 259.5 kB / 0.8753 GB, free: 6.172 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.244e-05/0.6499, allocations: 27.81 kB / 0.8753 GB, free: 6.145 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009553/0.6509, allocations: 142.6 kB / 0.8754 GB, free: 6.004 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000101/0.651, allocations: 59.98 kB / 0.8755 GB, free: 5.945 MB / 0.6387 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001011/0.652, allocations: 0.6236 MB / 0.8761 GB, free: 5.316 MB / 0.6387 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0007965/0.6528, allocations: 0.7112 MB / 0.8768 GB, free: 4.441 MB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001396/0.6542, allocations: 1.073 MB / 0.8779 GB, free: 3.207 MB / 0.6387 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.991e-06/0.6542, allocations: 4 kB / 0.8779 GB, free: 3.203 MB / 0.6387 GB Notification: Performance of matching and sorting (n=144) (initialization_lambda0): time 0.002091/0.6563, allocations: 1.249 MB / 0.8791 GB, free: 1.949 MB / 0.6387 GB Notification: Performance of prepare postOptimizeDAE: time 1.495e-05/0.6563, allocations: 8 kB / 0.8791 GB, free: 1.941 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.685e-05/0.6564, allocations: 16 kB / 0.8791 GB, free: 1.926 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.51e-05/0.6564, allocations: 20 kB / 0.8791 GB, free: 1.906 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007661/0.6572, allocations: 259.5 kB / 0.8794 GB, free: 1.652 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.078e-05/0.6572, allocations: 27.86 kB / 0.8794 GB, free: 1.625 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009292/0.6581, allocations: 107.4 kB / 0.8795 GB, free: 1.52 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001086/0.6582, allocations: 63.97 kB / 0.8796 GB, free: 1.457 MB / 0.6387 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 52 * 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 initialization (140): * Single equations (assignments): 136 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * 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 0.0002963/0.6585, allocations: 255.9 kB / 0.8798 GB, free: 1.199 MB / 0.6387 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003081/0.6589, allocations: 189.7 kB / 0.88 GB, free: 1.012 MB / 0.6387 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002984/0.6618, allocations: 1.738 MB / 0.8817 GB, free: 15.26 MB / 0.6544 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.764e-05/0.6619, allocations: 23.98 kB / 0.8817 GB, free: 15.24 MB / 0.6544 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.536e-06/0.6619, allocations: 7.922 kB / 0.8817 GB, free: 15.23 MB / 0.6544 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001647/0.6636, allocations: 1.146 MB / 0.8828 GB, free: 14.05 MB / 0.6544 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005334/0.6689, allocations: 3.479 MB / 0.8862 GB, free: 10.41 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.441e-05/0.6689, allocations: 12.16 kB / 0.8862 GB, free: 10.4 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006687/0.6696, allocations: 203.7 kB / 0.8864 GB, free: 10.2 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.659e-05/0.6696, allocations: 8 kB / 0.8864 GB, free: 10.2 MB / 0.6544 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.884e-05/0.6697, allocations: 39.98 kB / 0.8865 GB, free: 10.16 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.511e-05/0.6697, allocations: 19.92 kB / 0.8865 GB, free: 10.14 MB / 0.6544 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.451e-06/0.6698, allocations: 8 kB / 0.8865 GB, free: 10.13 MB / 0.6544 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003054/0.6728, allocations: 2.234 MB / 0.8887 GB, free: 7.789 MB / 0.6544 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007344/0.6736, allocations: 434.2 kB / 0.8891 GB, free: 7.344 MB / 0.6544 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002197/0.6738, allocations: 32 kB / 0.8891 GB, free: 7.312 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007896/0.6746, allocations: 51.88 kB / 0.8892 GB, free: 7.262 MB / 0.6544 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001787/0.6748, allocations: 124.5 kB / 0.8893 GB, free: 7.141 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001015/0.6749, allocations: 59.97 kB / 0.8894 GB, free: 7.082 MB / 0.6544 GB Notification: Performance of sorting global known variables: time 0.001486/0.6764, allocations: 1.087 MB / 0.8904 GB, free: 5.973 MB / 0.6544 GB Notification: Performance of sort global known variables: time 1.6e-07/0.6764, allocations: 0 / 0.8904 GB, free: 5.973 MB / 0.6544 GB Notification: Performance of remove unused functions: time 0.002769/0.6792, allocations: 1.135 MB / 0.8915 GB, free: 4.836 MB / 0.6544 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 27 * Number of states: 6 (pip.del.x,pip.timDel.x,pip.vol_b.dynBal.U,pip.vol_a.dynBal.U,pipNoMix.del.x,pipNoMix.timDel.x) * 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 (129): * Single equations (assignments): 102 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 27 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.001385/0.6805, allocations: 0.8 MB / 0.8923 GB, free: 4.043 MB / 0.6544 GB Notification: Performance of simCode: created initialization part: time 0.002754/0.6833, allocations: 1.811 MB / 0.8941 GB, free: 2.191 MB / 0.6544 GB Notification: Performance of simCode: created event and clocks part: time 4.719e-06/0.6833, allocations: 0 / 0.8941 GB, free: 2.191 MB / 0.6544 GB Notification: Performance of simCode: created simulation system equations: time 0.001125/0.6845, allocations: 0.8274 MB / 0.8949 GB, free: 1.344 MB / 0.6544 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003695/0.6882, allocations: 0.9648 MB / 0.8958 GB, free: 400 kB / 0.6544 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005005/0.6932, allocations: 3.568 MB / 0.8993 GB, free: 12.71 MB / 0.67 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008894/0.6941, allocations: 1.432 MB / 0.9007 GB, free: 11.24 MB / 0.67 GB Notification: Performance of simCode: alias equations: time 0.001767/0.6959, allocations: 0.5451 MB / 0.9012 GB, free: 10.7 MB / 0.67 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003674/0.6963, allocations: 191.3 kB / 0.9014 GB, free: 10.52 MB / 0.67 GB Notification: Performance of SimCode: time 9.52e-07/0.6963, allocations: 0 / 0.9014 GB, free: 10.52 MB / 0.67 GB Notification: Performance of Templates: time 0.06329/0.7596, allocations: 43.06 MB / 0.9435 GB, free: 56 kB / 0.7012 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe.sim & ./BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe -abortSlowSimulation -alarm=480 -s cvode -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.PlugFlowPipe.pipe 2>&1)