Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven.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/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-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: "" <> buildModelFMU(IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_FMI_Validation_HeaterFanPressureDriven",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_FMI_Validation_HeaterFanPressureDriven",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001078/0.001078, allocations: 108.6 kB / 16.41 MB, free: 6.5 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001135/0.001135, allocations: 193.2 kB / 17.34 MB, free: 5.762 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.317/1.317, allocations: 222.9 MB / 241.1 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7711/0.7711, allocations: 122.8 MB / 414.1 MB, free: 15.81 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001218/0.001218, allocations: 62.36 kB / 0.5679 GB, free: 28.88 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1375/0.1388, allocations: 77.94 MB / 0.6441 GB, free: 9.586 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven): time 0.6287/0.7675, allocations: 312.5 MB / 0.9493 GB, free: 3.121 MB / 0.7012 GB Notification: Performance of NFInst.instExpressions: time 0.04683/0.8144, allocations: 29.37 MB / 0.978 GB, free: 5.664 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003308/0.8177, allocations: 79.62 kB / 0.978 GB, free: 5.586 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.007426/0.8252, allocations: 2.425 MB / 0.9804 GB, free: 3.152 MB / 0.7325 GB Notification: Performance of NFTyping.typeBindings: time 0.01016/0.8354, allocations: 3.306 MB / 0.9836 GB, free: 15.83 MB / 0.7481 GB Notification: Performance of NFTyping.typeClassSections: time 0.007919/0.8433, allocations: 2.773 MB / 0.9863 GB, free: 13.07 MB / 0.7481 GB Notification: Performance of NFFlatten.flatten: time 0.01246/0.8558, allocations: 7.575 MB / 0.9937 GB, free: 5.473 MB / 0.7481 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003985/0.8598, allocations: 2.081 MB / 0.9958 GB, free: 3.348 MB / 0.7481 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005829/0.8656, allocations: 2.461 MB / 0.9982 GB, free: 0.8789 MB / 0.7481 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003402/0.8691, allocations: 1.537 MB / 0.9997 GB, free: 15.34 MB / 0.7637 GB Notification: Performance of NFPackage.collectConstants: time 0.0007436/0.8698, allocations: 256 kB / 0.9999 GB, free: 15.09 MB / 0.7637 GB Notification: Performance of NFFlatten.collectFunctions: time 0.007721/0.8776, allocations: 3.621 MB / 1.003 GB, free: 11.46 MB / 0.7637 GB Notification: Performance of NFScalarize.scalarize: time 0.001281/0.8789, allocations: 0.8297 MB / 1.004 GB, free: 10.63 MB / 0.7637 GB Notification: Performance of NFVerifyModel.verify: time 0.002668/0.8816, allocations: 1.396 MB / 1.006 GB, free: 9.23 MB / 0.7637 GB Notification: Performance of NFConvertDAE.convert: time 0.01014/0.8917, allocations: 5.466 MB / 1.011 GB, free: 3.746 MB / 0.7637 GB Notification: Performance of FrontEnd - DAE generated: time 6.162e-06/0.8918, allocations: 0 / 1.011 GB, free: 3.746 MB / 0.7637 GB Notification: Performance of FrontEnd: time 1.964e-06/0.8918, allocations: 0 / 1.011 GB, free: 3.746 MB / 0.7637 GB Notification: Performance of Transformations before backend: time 0.0001219/0.8919, allocations: 0 / 1.011 GB, free: 3.746 MB / 0.7637 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 336 * Number of variables: 336 Notification: Performance of Generate backend data structure: time 0.007012/0.8989, allocations: 3.032 MB / 1.014 GB, free: 0.6367 MB / 0.7637 GB Notification: Performance of prepare preOptimizeDAE: time 5.281e-05/0.899, allocations: 12.62 kB / 1.014 GB, free: 0.625 MB / 0.7637 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0004623/0.8995, allocations: 198.4 kB / 1.014 GB, free: 432 kB / 0.7637 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.008859/0.9084, allocations: 0.9466 MB / 1.015 GB, free: 15.47 MB / 0.7794 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01132/0.9197, allocations: 5.757 MB / 1.021 GB, free: 9.664 MB / 0.7794 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000105/0.9199, allocations: 110.6 kB / 1.021 GB, free: 9.555 MB / 0.7794 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002316/0.9201, allocations: 135.9 kB / 1.021 GB, free: 9.422 MB / 0.7794 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003371/0.9235, allocations: 1.607 MB / 1.022 GB, free: 7.746 MB / 0.7794 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.04e-05/0.9235, allocations: 3.938 kB / 1.022 GB, free: 7.742 MB / 0.7794 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001338/0.9237, allocations: 56 kB / 1.023 GB, free: 7.688 MB / 0.7794 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.075e-05/0.9237, allocations: 46.53 kB / 1.023 GB, free: 7.641 MB / 0.7794 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003289/0.927, allocations: 1.333 MB / 1.024 GB, free: 6.301 MB / 0.7794 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 0.01098/0.938, allocations: 7.82 MB / 1.032 GB, free: 13.93 MB / 0.795 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002698/0.9407, allocations: 0.8735 MB / 1.032 GB, free: 13.02 MB / 0.795 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001093/0.9419, allocations: 340.6 kB / 1.033 GB, free: 12.68 MB / 0.795 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002952/0.9422, allocations: 190.2 kB / 1.033 GB, free: 12.46 MB / 0.795 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.961e-05/0.9422, allocations: 46.48 kB / 1.033 GB, free: 12.4 MB / 0.795 GB Notification: Performance of pre-optimization done (n=35): time 3.707e-06/0.9422, allocations: 112 / 1.033 GB, free: 12.4 MB / 0.795 GB Notification: Performance of matching and sorting (n=35): time 0.003681/0.9459, allocations: 1.062 MB / 1.034 GB, free: 11.33 MB / 0.795 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.828e-05/0.946, allocations: 55.41 kB / 1.034 GB, free: 11.27 MB / 0.795 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003462/0.9494, allocations: 2.176 MB / 1.036 GB, free: 9.066 MB / 0.795 GB Notification: Performance of collectPreVariables (initialization): time 9.335e-05/0.9495, allocations: 37.7 kB / 1.036 GB, free: 9.023 MB / 0.795 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008563/0.9504, allocations: 0.9776 MB / 1.037 GB, free: 8.035 MB / 0.795 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001345/0.9505, allocations: 134.8 kB / 1.037 GB, free: 7.902 MB / 0.795 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003729/0.9509, allocations: 250.5 kB / 1.037 GB, free: 7.648 MB / 0.795 GB Notification: Performance of setup shared object (initialization): time 0.0001304/0.9511, allocations: 353.9 kB / 1.038 GB, free: 7.297 MB / 0.795 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001258/0.9523, allocations: 0.5321 MB / 1.038 GB, free: 6.762 MB / 0.795 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001473/0.9538, allocations: 0.7934 MB / 1.039 GB, free: 5.848 MB / 0.795 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002486/0.9563, allocations: 1.195 MB / 1.04 GB, free: 4.559 MB / 0.795 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.127e-06/0.9563, allocations: 4 kB / 1.04 GB, free: 4.555 MB / 0.795 GB Notification: Performance of matching and sorting (n=138) (initialization): time 0.003344/0.9597, allocations: 1.546 MB / 1.042 GB, free: 3 MB / 0.795 GB Notification: Performance of prepare postOptimizeDAE: time 2.301e-05/0.9597, allocations: 8 kB / 1.042 GB, free: 2.992 MB / 0.795 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.643e-05/0.9597, allocations: 8 kB / 1.042 GB, free: 2.984 MB / 0.795 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.832e-05/0.9598, allocations: 12 kB / 1.042 GB, free: 2.973 MB / 0.795 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001301/0.9611, allocations: 249.4 kB / 1.042 GB, free: 2.73 MB / 0.795 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0003956/0.9615, allocations: 0.6171 MB / 1.043 GB, free: 2.09 MB / 0.795 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001419/0.9629, allocations: 190.9 kB / 1.043 GB, free: 1.902 MB / 0.795 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.232e-05/0.963, allocations: 39.98 kB / 1.043 GB, free: 1.863 MB / 0.795 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001935/0.9649, allocations: 1.022 MB / 1.044 GB, free: 0.8359 MB / 0.795 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001331/0.9663, allocations: 0.7856 MB / 1.045 GB, free: 15.94 MB / 0.8106 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002262/0.9686, allocations: 1.167 MB / 1.046 GB, free: 14.67 MB / 0.8106 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.498e-06/0.9686, allocations: 3.938 kB / 1.046 GB, free: 14.67 MB / 0.8106 GB Notification: Performance of matching and sorting (n=138) (initialization_lambda0): time 0.00325/0.9718, allocations: 1.521 MB / 1.047 GB, free: 13.14 MB / 0.8106 GB Notification: Performance of prepare postOptimizeDAE: time 2.059e-05/0.9719, allocations: 9.719 kB / 1.047 GB, free: 13.13 MB / 0.8106 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.156e-05/0.9719, allocations: 8 kB / 1.047 GB, free: 13.12 MB / 0.8106 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.44e-05/0.9719, allocations: 15.94 kB / 1.047 GB, free: 13.11 MB / 0.8106 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001075/0.973, allocations: 236.1 kB / 1.048 GB, free: 12.88 MB / 0.8106 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.51e-05/0.973, allocations: 15.94 kB / 1.048 GB, free: 12.86 MB / 0.8106 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001421/0.9744, allocations: 123.5 kB / 1.048 GB, free: 12.74 MB / 0.8106 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.763e-05/0.9745, allocations: 39.98 kB / 1.048 GB, free: 12.7 MB / 0.8106 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 32 * 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 (105): * Single equations (assignments): 102 * Array equations: 1 * Algorithm blocks: 0 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * 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): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0003184/0.9749, allocations: 235.2 kB / 1.048 GB, free: 12.47 MB / 0.8106 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002691/0.9751, allocations: 210.6 kB / 1.048 GB, free: 12.26 MB / 0.8106 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002528/0.9777, allocations: 0.8147 MB / 1.049 GB, free: 11.44 MB / 0.8106 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.384e-06/0.9777, allocations: 4 kB / 1.049 GB, free: 11.43 MB / 0.8106 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.02e-06/0.9777, allocations: 0 / 1.049 GB, free: 11.43 MB / 0.8106 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.581e-06/0.9777, allocations: 0 / 1.049 GB, free: 11.43 MB / 0.8106 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 postOpt removeSimpleEquations (simulation): time 0.004543/0.9823, allocations: 2.252 MB / 1.051 GB, free: 9.102 MB / 0.8106 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.37e-06/0.9823, allocations: 4 kB / 1.051 GB, free: 9.098 MB / 0.8106 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008059/0.9831, allocations: 132 kB / 1.051 GB, free: 8.969 MB / 0.8106 GB Notification: Performance of postOpt tearingSystem (simulation): time 9.518e-06/0.9831, allocations: 4 kB / 1.051 GB, free: 8.965 MB / 0.8106 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.921e-05/0.9832, allocations: 11.98 kB / 1.051 GB, free: 8.953 MB / 0.8106 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0003148/0.9835, allocations: 0.5976 MB / 1.052 GB, free: 8.332 MB / 0.8106 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.226e-06/0.9835, allocations: 4.031 kB / 1.052 GB, free: 8.328 MB / 0.8106 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002169/0.9857, allocations: 0.9183 MB / 1.053 GB, free: 7.379 MB / 0.8106 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006052/0.9863, allocations: 371.4 kB / 1.053 GB, free: 6.996 MB / 0.8106 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000213/0.9865, allocations: 11.94 kB / 1.053 GB, free: 6.984 MB / 0.8106 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001011/0.9875, allocations: 71.92 kB / 1.053 GB, free: 6.914 MB / 0.8106 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.201e-05/0.9876, allocations: 27.91 kB / 1.053 GB, free: 6.887 MB / 0.8106 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.784e-05/0.9876, allocations: 19.98 kB / 1.053 GB, free: 6.867 MB / 0.8106 GB Notification: Performance of sorting global known variables: time 0.002002/0.9896, allocations: 1.484 MB / 1.055 GB, free: 5.371 MB / 0.8106 GB Notification: Performance of sort global known variables: time 2.2e-07/0.9896, allocations: 0 / 1.055 GB, free: 5.371 MB / 0.8106 GB Notification: Performance of remove unused functions: time 0.002062/0.9917, allocations: 0.9007 MB / 1.056 GB, free: 4.469 MB / 0.8106 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 6 * 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 (36): * Single equations (assignments): 35 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * 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): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.003219/0.9949, allocations: 1.817 MB / 1.057 GB, free: 2.605 MB / 0.8106 GB Notification: Performance of simCode: created initialization part: time 0.0042/0.9992, allocations: 1.711 MB / 1.059 GB, free: 0.8984 MB / 0.8106 GB Notification: Performance of simCode: created event and clocks part: time 3.617e-06/0.9992, allocations: 4.062 kB / 1.059 GB, free: 0.8945 MB / 0.8106 GB Notification: Performance of simCode: created simulation system equations: time 0.00102/1, allocations: 328 kB / 1.059 GB, free: 0.5742 MB / 0.8106 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.3105/1.311, allocations: 1.125 MB / 1.06 GB, free: 331.2 MB / 0.8106 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02919/1.34, allocations: 14.47 MB / 1.075 GB, free: 325.5 MB / 0.8106 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001234/1.341, allocations: 1.537 MB / 1.076 GB, free: 324.7 MB / 0.8106 GB Notification: Performance of simCode: alias equations: time 0.002253/1.343, allocations: 472.8 kB / 1.077 GB, free: 324.7 MB / 0.8106 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001045/1.345, allocations: 0.8062 MB / 1.077 GB, free: 324 MB / 0.8106 GB Notification: Performance of SimCode: time 7.61e-07/1.345, allocations: 0 / 1.077 GB, free: 324 MB / 0.8106 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.07743/1.422, allocations: 55.67 MB / 1.132 GB, free: 279.3 MB / 0.8106 GB Notification: Performance of buildModelFMU: Generate platform static: time 15.21/16.63, allocations: 16.59 kB / 1.132 GB, free: 279.3 MB / 0.8106 GB (rm -f IBPSA_latest_IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven.sim & python3 -m fmpy simulate --output-file IBPSA_latest_IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven_res.csv --start-time 0 --stop-time 1 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 IBPSA_latest_IBPSA_Fluid_FMI_Validation_HeaterFanPressureDriven.fmu > IBPSA_latest_IBPSA.Fluid.FMI.Validation.HeaterFanPressureDriven.pipe 2>&1)