Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.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/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity") translateModel(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001503/0.001502, allocations: 115 kB / 16.37 MB, free: 6.016 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001608/0.001609, allocations: 193.2 kB / 17.31 MB, free: 5.609 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.342/1.342, allocations: 222.9 MB / 241 MB, free: 15 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7805/0.7805, allocations: 132.2 MB / 423.3 MB, free: 6.613 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001456/0.001456, allocations: 63.91 kB / 0.5032 GB, free: 10.95 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3855/0.387, allocations: 80.19 MB / 0.5815 GB, free: 27.75 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity): time 0.02354/0.4105, allocations: 31.52 MB / 0.6123 GB, free: 14.79 MB / 462.1 MB Notification: Performance of NFInst.instExpressions: time 0.009309/0.4199, allocations: 5.329 MB / 0.6175 GB, free: 9.48 MB / 462.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001279/0.4212, allocations: 35.81 kB / 0.6175 GB, free: 9.445 MB / 462.1 MB Notification: Performance of NFTyping.typeComponents: time 0.00113/0.4223, allocations: 389.5 kB / 0.6179 GB, free: 9.062 MB / 462.1 MB Notification: Performance of NFTyping.typeBindings: time 0.003942/0.4264, allocations: 1.423 MB / 0.6193 GB, free: 7.633 MB / 462.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.002201/0.4286, allocations: 0.856 MB / 0.6201 GB, free: 6.785 MB / 462.1 MB Notification: Performance of NFFlatten.flatten: time 0.002811/0.4314, allocations: 2.124 MB / 0.6222 GB, free: 4.656 MB / 462.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0008812/0.4323, allocations: 0.6194 MB / 0.6228 GB, free: 4.023 MB / 462.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.001875/0.4342, allocations: 0.8024 MB / 0.6236 GB, free: 3.227 MB / 462.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0008461/0.435, allocations: 0.5561 MB / 0.6241 GB, free: 2.668 MB / 462.1 MB Notification: Performance of NFPackage.collectConstants: time 8.143e-05/0.4351, allocations: 56 kB / 0.6242 GB, free: 2.613 MB / 462.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002755/0.4379, allocations: 1.217 MB / 0.6254 GB, free: 1.395 MB / 462.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002084/0.4381, allocations: 171.4 kB / 0.6255 GB, free: 1.227 MB / 462.1 MB Notification: Performance of NFVerifyModel.verify: time 0.00046/0.4386, allocations: 390.1 kB / 0.6259 GB, free: 0.8438 MB / 462.1 MB Notification: Performance of NFConvertDAE.convert: time 0.002418/0.441, allocations: 1.523 MB / 0.6274 GB, free: 15.32 MB / 478.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.708e-06/0.441, allocations: 0 / 0.6274 GB, free: 15.32 MB / 478.1 MB Notification: Performance of FrontEnd: time 1.974e-06/0.441, allocations: 0 / 0.6274 GB, free: 15.32 MB / 478.1 MB Notification: Performance of Transformations before backend: time 1.098e-05/0.4411, allocations: 0 / 0.6274 GB, free: 15.32 MB / 478.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 110 * Number of variables: 110 Notification: Performance of Generate backend data structure: time 0.001691/0.4427, allocations: 1.094 MB / 0.6285 GB, free: 14.17 MB / 478.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.995e-05/0.4428, allocations: 8.031 kB / 0.6285 GB, free: 14.16 MB / 478.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002385/0.4452, allocations: 271.8 kB / 0.6287 GB, free: 13.9 MB / 478.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001432/0.4466, allocations: 0.7055 MB / 0.6294 GB, free: 13.15 MB / 478.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.578e-05/0.4467, allocations: 33 kB / 0.6294 GB, free: 13.12 MB / 478.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 7.908e-05/0.4468, allocations: 47.94 kB / 0.6295 GB, free: 13.07 MB / 478.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008984/0.4477, allocations: 0.5282 MB / 0.63 GB, free: 12.51 MB / 478.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.763e-05/0.4477, allocations: 4 kB / 0.63 GB, free: 12.5 MB / 478.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.473e-05/0.4478, allocations: 20 kB / 0.63 GB, free: 12.48 MB / 478.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.242e-05/0.4478, allocations: 12 kB / 0.63 GB, free: 12.47 MB / 478.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006528/0.4484, allocations: 355.7 kB / 0.6304 GB, free: 12.12 MB / 478.1 MB 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 0.003198/0.4516, allocations: 2.841 MB / 0.6331 GB, free: 9.047 MB / 478.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0005979/0.4523, allocations: 297.8 kB / 0.6334 GB, free: 8.738 MB / 478.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002599/0.4525, allocations: 151.5 kB / 0.6336 GB, free: 8.586 MB / 478.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0005735/0.4531, allocations: 0.6535 MB / 0.6342 GB, free: 7.785 MB / 478.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.64e-05/0.4532, allocations: 50.67 kB / 0.6343 GB, free: 7.727 MB / 478.1 MB Notification: Performance of pre-optimization done (n=28): time 1.673e-06/0.4532, allocations: 0 / 0.6343 GB, free: 7.727 MB / 478.1 MB Notification: Performance of matching and sorting (n=40): time 0.00617/0.4593, allocations: 2.079 MB / 0.6363 GB, free: 5.57 MB / 478.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 5.03e-05/0.4594, allocations: 89.09 kB / 0.6364 GB, free: 5.465 MB / 478.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007632/0.4602, allocations: 0.538 MB / 0.6369 GB, free: 4.918 MB / 478.1 MB Notification: Performance of collectPreVariables (initialization): time 3.9e-05/0.4602, allocations: 29.7 kB / 0.6369 GB, free: 4.883 MB / 478.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002252/0.4605, allocations: 336.3 kB / 0.6373 GB, free: 4.547 MB / 478.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001163/0.4606, allocations: 142 kB / 0.6374 GB, free: 4.406 MB / 478.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001384/0.4607, allocations: 90.16 kB / 0.6375 GB, free: 4.312 MB / 478.1 MB Notification: Performance of setup shared object (initialization): time 0.0001421/0.4609, allocations: 362.8 kB / 0.6378 GB, free: 3.949 MB / 478.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003526/0.4612, allocations: 171 kB / 0.638 GB, free: 3.777 MB / 478.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004314/0.4617, allocations: 296.5 kB / 0.6383 GB, free: 3.445 MB / 478.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007604/0.4625, allocations: 471.2 kB / 0.6387 GB, free: 2.941 MB / 478.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.993e-06/0.4625, allocations: 0 / 0.6387 GB, free: 2.941 MB / 478.1 MB Notification: Performance of matching and sorting (n=55) (initialization): time 0.001777/0.4642, allocations: 0.7399 MB / 0.6394 GB, free: 2.188 MB / 478.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.774e-05/0.4643, allocations: 11.88 kB / 0.6394 GB, free: 2.176 MB / 478.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.027e-06/0.4643, allocations: 4 kB / 0.6395 GB, free: 2.172 MB / 478.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001006/0.4653, allocations: 289.7 kB / 0.6397 GB, free: 1.883 MB / 478.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000284/0.4656, allocations: 67.84 kB / 0.6398 GB, free: 1.816 MB / 478.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006458/0.4721, allocations: 4.722 MB / 0.6444 GB, free: 12.82 MB / 494.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001172/0.4733, allocations: 63.91 kB / 0.6445 GB, free: 12.76 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.57e-05/0.4733, allocations: 23.98 kB / 0.6445 GB, free: 12.73 MB / 494.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0006206/0.474, allocations: 325.2 kB / 0.6448 GB, free: 12.41 MB / 494.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004198/0.4744, allocations: 291.2 kB / 0.6451 GB, free: 12.08 MB / 494.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007824/0.4752, allocations: 471.6 kB / 0.6455 GB, free: 11.57 MB / 494.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.747e-06/0.4752, allocations: 4 kB / 0.6455 GB, free: 11.57 MB / 494.1 MB Notification: Performance of matching and sorting (n=55) (initialization_lambda0): time 0.001776/0.477, allocations: 0.7395 MB / 0.6463 GB, free: 10.82 MB / 494.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.773e-05/0.477, allocations: 8 kB / 0.6463 GB, free: 10.81 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.971e-06/0.477, allocations: 4 kB / 0.6463 GB, free: 10.8 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009784/0.478, allocations: 281.8 kB / 0.6465 GB, free: 10.52 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000267/0.4783, allocations: 67.91 kB / 0.6466 GB, free: 10.46 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006416/0.4847, allocations: 4.732 MB / 0.6512 GB, free: 5.445 MB / 494.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001121/0.4859, allocations: 63.98 kB / 0.6513 GB, free: 5.383 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.291e-05/0.4859, allocations: 23.98 kB / 0.6513 GB, free: 5.359 MB / 494.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 14 * 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 (39): * Single equations (assignments): 37 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(2,8), (2,6)} Notification: Performance of prepare postOptimizeDAE: time 0.0002013/0.4861, allocations: 209.3 kB / 0.6515 GB, free: 5.148 MB / 494.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000137/0.4863, allocations: 59.25 kB / 0.6516 GB, free: 5.09 MB / 494.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001684/0.4879, allocations: 0.6644 MB / 0.6522 GB, free: 4.414 MB / 494.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.19e-06/0.488, allocations: 4 kB / 0.6522 GB, free: 4.41 MB / 494.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.428e-06/0.488, allocations: 7.922 kB / 0.6522 GB, free: 4.402 MB / 494.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001483/0.4895, allocations: 0.7492 MB / 0.653 GB, free: 3.598 MB / 494.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003034/0.4925, allocations: 1.71 MB / 0.6546 GB, free: 1.82 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.517e-06/0.4925, allocations: 0 / 0.6546 GB, free: 1.82 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002352/0.4928, allocations: 51.91 kB / 0.6547 GB, free: 1.77 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009181/0.4937, allocations: 253.5 kB / 0.6549 GB, free: 1.516 MB / 494.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.296e-05/0.4937, allocations: 8 kB / 0.6549 GB, free: 1.508 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005464/0.4992, allocations: 4.307 MB / 0.6591 GB, free: 12.92 MB / 0.4981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.967e-06/0.4992, allocations: 3.938 kB / 0.6591 GB, free: 12.92 MB / 0.4981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00198/0.5012, allocations: 0.9477 MB / 0.6601 GB, free: 11.94 MB / 0.4981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003017/0.5015, allocations: 180.4 kB / 0.6602 GB, free: 11.75 MB / 0.4981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.104e-05/0.5016, allocations: 12 kB / 0.6602 GB, free: 11.73 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008694/0.5025, allocations: 63.97 kB / 0.6603 GB, free: 11.67 MB / 0.4981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.298e-05/0.5026, allocations: 31.95 kB / 0.6603 GB, free: 11.64 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.327e-05/0.5026, allocations: 12 kB / 0.6603 GB, free: 11.63 MB / 0.4981 GB Notification: Performance of sorting global known variables: time 0.0006312/0.5033, allocations: 390.8 kB / 0.6607 GB, free: 11.25 MB / 0.4981 GB Notification: Performance of sort global known variables: time 1.6e-07/0.5033, allocations: 0 / 0.6607 GB, free: 11.25 MB / 0.4981 GB Notification: Performance of remove unused functions: time 0.001685/0.505, allocations: 411.9 kB / 0.6611 GB, free: 10.85 MB / 0.4981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 2 (vol.ports[1].h_outflow,vol1.ports[1].h_outflow) * 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 (28): * Single equations (assignments): 26 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(2,6), (2,4)} Notification: Performance of Backend phase and start with SimCode phase: time 0.000682/0.5057, allocations: 300.7 kB / 0.6614 GB, free: 10.56 MB / 0.4981 GB Notification: Performance of simCode: created initialization part: time 0.003053/0.5087, allocations: 1.367 MB / 0.6627 GB, free: 9.141 MB / 0.4981 GB Notification: Performance of simCode: created event and clocks part: time 6.302e-06/0.5088, allocations: 4 kB / 0.6627 GB, free: 9.137 MB / 0.4981 GB Notification: Performance of simCode: created simulation system equations: time 0.001193/0.5099, allocations: 0.5481 MB / 0.6633 GB, free: 8.562 MB / 0.4981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001484/0.5114, allocations: 355.2 kB / 0.6636 GB, free: 8.234 MB / 0.4981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002106/0.5136, allocations: 1.22 MB / 0.6648 GB, free: 6.992 MB / 0.4981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005541/0.5141, allocations: 0.9227 MB / 0.6657 GB, free: 6.043 MB / 0.4981 GB Notification: Performance of simCode: alias equations: time 0.0005189/0.5147, allocations: 139.8 kB / 0.6658 GB, free: 5.906 MB / 0.4981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001401/0.5148, allocations: 51.42 kB / 0.6659 GB, free: 5.855 MB / 0.4981 GB Notification: Performance of SimCode: time 7.42e-07/0.5148, allocations: 4 kB / 0.6659 GB, free: 5.852 MB / 0.4981 GB Notification: Performance of Templates: time 0.02954/0.5444, allocations: 18.51 MB / 0.684 GB, free: 3.562 MB / 0.5137 GB make -j1 -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.makefile (rm -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; mkfifo IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe >> ../files/IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.sim & ./IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity -abortSlowSimulation -alarm=480 -s cvode -lv LOG_STATS > IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe 2>&1)