Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon.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.HeatPumps.Examples.Carnot_TCon,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon") translateModel(BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001164/0.001164, allocations: 106.2 kB / 16.41 MB, free: 6.492 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001193/0.001194, allocations: 189.5 kB / 17.34 MB, free: 5.766 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.332/1.332, allocations: 222.9 MB / 241 MB, free: 15.08 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002135/0.002135, allocations: 282.9 kB / 291.5 MB, free: 14.45 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 1.012/1.012, allocations: 169.3 MB / 0.499 GB, free: 4.449 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001955/0.001955, allocations: 99.83 kB / 0.6821 GB, free: 6.984 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4446/0.4465, allocations: 86.97 MB / 0.767 GB, free: 3.949 MB / 0.5294 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon): time 0.05567/0.5023, allocations: 61.14 MB / 0.8267 GB, free: 6.59 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.01574/0.518, allocations: 12 MB / 0.8385 GB, free: 10.56 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001835/0.5199, allocations: 55.69 kB / 0.8385 GB, free: 10.5 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.001724/0.5217, allocations: 0.6868 MB / 0.8392 GB, free: 9.812 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 0.004914/0.5266, allocations: 1.961 MB / 0.8411 GB, free: 7.844 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.0029/0.5295, allocations: 1.209 MB / 0.8423 GB, free: 6.645 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.004694/0.5342, allocations: 3.087 MB / 0.8453 GB, free: 3.547 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00181/0.5361, allocations: 1.108 MB / 0.8464 GB, free: 2.406 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003197/0.5393, allocations: 1.349 MB / 0.8477 GB, free: 1.055 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001791/0.5411, allocations: 0.9022 MB / 0.8486 GB, free: 152 kB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 0.0003285/0.5414, allocations: 116 kB / 0.8487 GB, free: 36 kB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003037/0.5445, allocations: 1.431 MB / 0.8501 GB, free: 14.6 MB / 0.6231 GB Notification: Performance of NFScalarize.scalarize: time 0.0003315/0.5448, allocations: 290.9 kB / 0.8504 GB, free: 14.32 MB / 0.6231 GB Notification: Performance of NFVerifyModel.verify: time 0.0008962/0.5457, allocations: 0.6958 MB / 0.851 GB, free: 13.62 MB / 0.6231 GB Notification: Performance of NFConvertDAE.convert: time 0.003236/0.5489, allocations: 2.297 MB / 0.8533 GB, free: 11.32 MB / 0.6231 GB Notification: Performance of FrontEnd - DAE generated: time 6.262e-06/0.549, allocations: 8 kB / 0.8533 GB, free: 11.31 MB / 0.6231 GB Notification: Performance of FrontEnd: time 1.733e-06/0.549, allocations: 0 / 0.8533 GB, free: 11.31 MB / 0.6231 GB Notification: Performance of Transformations before backend: time 1.783e-05/0.549, allocations: 0 / 0.8533 GB, free: 11.31 MB / 0.6231 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 192 * Number of variables: 192 Notification: Performance of Generate backend data structure: time 0.002859/0.5519, allocations: 1.715 MB / 0.855 GB, free: 9.535 MB / 0.6231 GB Notification: Performance of prepare preOptimizeDAE: time 3.991e-05/0.5519, allocations: 15.97 kB / 0.855 GB, free: 9.52 MB / 0.6231 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00214/0.5541, allocations: 406.8 kB / 0.8554 GB, free: 9.121 MB / 0.6231 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002073/0.5561, allocations: 1.167 MB / 0.8565 GB, free: 7.895 MB / 0.6231 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.17e-05/0.5562, allocations: 58 kB / 0.8566 GB, free: 7.84 MB / 0.6231 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001243/0.5563, allocations: 84 kB / 0.8566 GB, free: 7.758 MB / 0.6231 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001857/0.5582, allocations: 1.001 MB / 0.8576 GB, free: 6.695 MB / 0.6231 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.933e-05/0.5582, allocations: 4 kB / 0.8576 GB, free: 6.691 MB / 0.6231 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.127e-05/0.5583, allocations: 32 kB / 0.8577 GB, free: 6.66 MB / 0.6231 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.791e-05/0.5583, allocations: 16 kB / 0.8577 GB, free: 6.645 MB / 0.6231 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002061/0.5604, allocations: 0.8547 MB / 0.8585 GB, free: 5.789 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 0.006033/0.5665, allocations: 5.243 MB / 0.8636 GB, free: 176 kB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003207/0.5697, allocations: 0.7849 MB / 0.8644 GB, free: 15.38 MB / 0.6387 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000652/0.5703, allocations: 296.2 kB / 0.8647 GB, free: 15.09 MB / 0.6387 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0006278/0.571, allocations: 0.9064 MB / 0.8656 GB, free: 13.98 MB / 0.6387 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.839e-05/0.571, allocations: 38.56 kB / 0.8656 GB, free: 13.93 MB / 0.6387 GB Notification: Performance of pre-optimization done (n=43): time 3.677e-06/0.571, allocations: 0 / 0.8656 GB, free: 13.93 MB / 0.6387 GB Notification: Performance of matching and sorting (n=43): time 0.007829/0.5789, allocations: 1.854 MB / 0.8674 GB, free: 12.05 MB / 0.6387 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.362e-05/0.5789, allocations: 55.41 kB / 0.8675 GB, free: 11.98 MB / 0.6387 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001463/0.5804, allocations: 1.076 MB / 0.8685 GB, free: 10.89 MB / 0.6387 GB Notification: Performance of collectPreVariables (initialization): time 5.317e-05/0.5805, allocations: 33.7 kB / 0.8685 GB, free: 10.86 MB / 0.6387 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004221/0.5809, allocations: 0.535 MB / 0.8691 GB, free: 10.32 MB / 0.6387 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001306/0.581, allocations: 149.8 kB / 0.8692 GB, free: 10.17 MB / 0.6387 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002085/0.5812, allocations: 134.2 kB / 0.8693 GB, free: 10.03 MB / 0.6387 GB Notification: Performance of setup shared object (initialization): time 0.0001088/0.5814, allocations: 326 kB / 0.8696 GB, free: 9.707 MB / 0.6387 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008161/0.5822, allocations: 315.2 kB / 0.8699 GB, free: 9.395 MB / 0.6387 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009789/0.5832, allocations: 0.5345 MB / 0.8705 GB, free: 8.762 MB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001548/0.5847, allocations: 0.7066 MB / 0.8712 GB, free: 7.984 MB / 0.6387 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.454e-06/0.5847, allocations: 7.984 kB / 0.8712 GB, free: 7.977 MB / 0.6387 GB Notification: Performance of matching and sorting (n=71) (initialization): time 0.002491/0.5872, allocations: 1.008 MB / 0.8721 GB, free: 6.957 MB / 0.6387 GB Notification: Performance of prepare postOptimizeDAE: time 1.841e-05/0.5873, allocations: 12.06 kB / 0.8722 GB, free: 6.945 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.314e-05/0.5873, allocations: 4 kB / 0.8722 GB, free: 6.941 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001177/0.5885, allocations: 319.4 kB / 0.8725 GB, free: 6.629 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005664/0.5891, allocations: 131.8 kB / 0.8726 GB, free: 6.5 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001323/0.5904, allocations: 0.9073 MB / 0.8735 GB, free: 5.566 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001139/0.5915, allocations: 147.2 kB / 0.8736 GB, free: 5.422 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.792e-05/0.5916, allocations: 35.98 kB / 0.8737 GB, free: 5.387 MB / 0.6387 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00112/0.5927, allocations: 0.509 MB / 0.8742 GB, free: 4.871 MB / 0.6387 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0009859/0.5937, allocations: 0.5346 MB / 0.8747 GB, free: 4.238 MB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001509/0.5953, allocations: 0.7021 MB / 0.8754 GB, free: 3.465 MB / 0.6387 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.967e-06/0.5953, allocations: 0 / 0.8754 GB, free: 3.465 MB / 0.6387 GB Notification: Performance of matching and sorting (n=71) (initialization_lambda0): time 0.002511/0.5978, allocations: 1.012 MB / 0.8763 GB, free: 2.441 MB / 0.6387 GB Notification: Performance of prepare postOptimizeDAE: time 1.397e-05/0.5978, allocations: 11.94 kB / 0.8764 GB, free: 2.43 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.951e-06/0.5978, allocations: 4 kB / 0.8764 GB, free: 2.426 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009891/0.5988, allocations: 300.7 kB / 0.8767 GB, free: 2.129 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000527/0.5994, allocations: 127.8 kB / 0.8768 GB, free: 2.004 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001254/0.6006, allocations: 0.8868 MB / 0.8776 GB, free: 1.094 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001167/0.6018, allocations: 143.5 kB / 0.8778 GB, free: 0.9531 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.964e-05/0.6019, allocations: 27.98 kB / 0.8778 GB, free: 0.9258 MB / 0.6387 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 23 * 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 (57): * Single equations (assignments): 56 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,14)} Notification: Performance of prepare postOptimizeDAE: time 0.0002339/0.6021, allocations: 228.1 kB / 0.878 GB, free: 0.6953 MB / 0.6387 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001733/0.6023, allocations: 110.6 kB / 0.8781 GB, free: 0.5859 MB / 0.6387 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003561/0.6059, allocations: 1.082 MB / 0.8792 GB, free: 15.49 MB / 0.6544 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.186e-05/0.6059, allocations: 4 kB / 0.8792 GB, free: 15.48 MB / 0.6544 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.045e-06/0.6059, allocations: 3.938 kB / 0.8792 GB, free: 15.48 MB / 0.6544 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.695e-06/0.6059, allocations: 7.984 kB / 0.8792 GB, free: 15.47 MB / 0.6544 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00481/0.6107, allocations: 2.142 MB / 0.8813 GB, free: 13.25 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.102e-06/0.6107, allocations: 0 / 0.8813 GB, free: 13.25 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002781/0.611, allocations: 63.89 kB / 0.8813 GB, free: 13.19 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009204/0.612, allocations: 300.2 kB / 0.8816 GB, free: 12.89 MB / 0.6544 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.819e-05/0.612, allocations: 12 kB / 0.8816 GB, free: 12.88 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00136/0.6134, allocations: 0.9307 MB / 0.8826 GB, free: 11.93 MB / 0.6544 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.254e-06/0.6134, allocations: 0 / 0.8826 GB, free: 11.93 MB / 0.6544 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003378/0.6168, allocations: 1.148 MB / 0.8837 GB, free: 10.73 MB / 0.6544 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004139/0.6172, allocations: 267.5 kB / 0.8839 GB, free: 10.45 MB / 0.6544 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001685/0.6174, allocations: 16 kB / 0.8839 GB, free: 10.44 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000827/0.6182, allocations: 63.86 kB / 0.884 GB, free: 10.38 MB / 0.6544 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.293e-05/0.6183, allocations: 51.77 kB / 0.8841 GB, free: 10.32 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.044e-05/0.6184, allocations: 23.98 kB / 0.8841 GB, free: 10.3 MB / 0.6544 GB Notification: Performance of sorting global known variables: time 0.001186/0.6196, allocations: 0.7512 MB / 0.8848 GB, free: 9.543 MB / 0.6544 GB Notification: Performance of sort global known variables: time 3.71e-07/0.6196, allocations: 4 kB / 0.8848 GB, free: 9.539 MB / 0.6544 GB Notification: Performance of remove unused functions: time 0.001588/0.6212, allocations: 0.5653 MB / 0.8854 GB, free: 8.973 MB / 0.6544 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 10 * 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 (33): * Single equations (assignments): 28 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,16)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0008428/0.622, allocations: 376.4 kB / 0.8857 GB, free: 8.602 MB / 0.6544 GB Notification: Performance of simCode: created initialization part: time 0.003042/0.6251, allocations: 1.12 MB / 0.8868 GB, free: 7.48 MB / 0.6544 GB Notification: Performance of simCode: created event and clocks part: time 4.628e-06/0.6251, allocations: 0 / 0.8868 GB, free: 7.48 MB / 0.6544 GB Notification: Performance of simCode: created simulation system equations: time 0.0008333/0.6259, allocations: 354.5 kB / 0.8872 GB, free: 7.137 MB / 0.6544 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002062/0.628, allocations: 0.5097 MB / 0.8877 GB, free: 6.641 MB / 0.6544 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005233/0.6333, allocations: 2.042 MB / 0.8897 GB, free: 4.535 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007193/0.634, allocations: 1.065 MB / 0.8907 GB, free: 3.438 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002411/0.6343, allocations: 83.42 kB / 0.8908 GB, free: 3.355 MB / 0.6544 GB Notification: Performance of SimCode: time 3.5e-07/0.6343, allocations: 0 / 0.8908 GB, free: 3.355 MB / 0.6544 GB Notification: Performance of Templates: time 0.03287/0.6671, allocations: 24.29 MB / 0.9145 GB, free: 11.24 MB / 0.6856 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon.sim & ./BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_TCon.pipe 2>&1)