Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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(Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar") translateModel(Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00104/0.00104, allocations: 106 kB / 16.36 MB, free: 6 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001108/0.001108, allocations: 193.4 kB / 17.3 MB, free: 5.602 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.301/1.301, allocations: 205.1 MB / 223.2 MB, free: 12.29 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.808/1.808, allocations: 292.3 MB / 0.5496 GB, free: 17.59 MB / 462.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001441/0.001441, allocations: 67.91 kB / 0.6729 GB, free: 5.887 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.212/0.2135, allocations: 114.6 MB / 0.7848 GB, free: 3.211 MB / 0.6544 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar): time 0.4057/0.6192, allocations: 75.23 MB / 0.8582 GB, free: 14.79 MB / 0.67 GB Notification: Performance of NFInst.instExpressions: time 0.02273/0.642, allocations: 15.04 MB / 0.8729 GB, free: 4.016 MB / 0.67 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003307/0.6454, allocations: 63.88 kB / 0.873 GB, free: 3.992 MB / 0.67 GB Notification: Performance of NFTyping.typeComponents: time 0.00282/0.6482, allocations: 0.8327 MB / 0.8738 GB, free: 3.469 MB / 0.67 GB Notification: Performance of NFTyping.typeBindings: time 0.009215/0.6575, allocations: 2.562 MB / 0.8763 GB, free: 1.93 MB / 0.67 GB Notification: Performance of NFTyping.typeClassSections: time 0.004355/0.6619, allocations: 1.404 MB / 0.8777 GB, free: 0.9531 MB / 0.67 GB Notification: Performance of NFFlatten.flatten: time 0.007895/0.6698, allocations: 4.363 MB / 0.8819 GB, free: 14.34 MB / 0.6856 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002588/0.6724, allocations: 1.44 MB / 0.8833 GB, free: 13.46 MB / 0.6856 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004577/0.677, allocations: 1.639 MB / 0.8849 GB, free: 12.46 MB / 0.6856 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002568/0.6796, allocations: 1.214 MB / 0.8861 GB, free: 11.71 MB / 0.6856 GB Notification: Performance of NFPackage.collectConstants: time 0.0004157/0.68, allocations: 163.4 kB / 0.8863 GB, free: 11.71 MB / 0.6856 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004282/0.6843, allocations: 1.4 MB / 0.8877 GB, free: 10.97 MB / 0.6856 GB Notification: Performance of NFScalarize.scalarize: time 0.0006023/0.6849, allocations: 406 kB / 0.888 GB, free: 10.65 MB / 0.6856 GB Notification: Performance of NFVerifyModel.verify: time 0.00177/0.6867, allocations: 0.9011 MB / 0.8889 GB, free: 10.04 MB / 0.6856 GB Notification: Performance of NFConvertDAE.convert: time 0.00522/0.6919, allocations: 2.873 MB / 0.8917 GB, free: 8.105 MB / 0.6856 GB Notification: Performance of FrontEnd - DAE generated: time 5.38e-06/0.692, allocations: 1.219 kB / 0.8917 GB, free: 8.105 MB / 0.6856 GB Notification: Performance of FrontEnd: time 1.844e-06/0.692, allocations: 4 kB / 0.8917 GB, free: 8.102 MB / 0.6856 GB Notification: Performance of Transformations before backend: time 3.613e-05/0.692, allocations: 0 / 0.8917 GB, free: 8.102 MB / 0.6856 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 240 * Number of variables: 240 Notification: Performance of Generate backend data structure: time 0.00453/0.6966, allocations: 2.082 MB / 0.8938 GB, free: 6.52 MB / 0.6856 GB Notification: Performance of prepare preOptimizeDAE: time 5.481e-05/0.6966, allocations: 9.531 kB / 0.8938 GB, free: 6.52 MB / 0.6856 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001003/0.6976, allocations: 227.4 kB / 0.894 GB, free: 6.414 MB / 0.6856 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002805/0.7005, allocations: 1.446 MB / 0.8954 GB, free: 5.254 MB / 0.6856 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.917e-05/0.7005, allocations: 76.22 kB / 0.8955 GB, free: 5.223 MB / 0.6856 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00018/0.7007, allocations: 101.8 kB / 0.8956 GB, free: 5.191 MB / 0.6856 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00207/0.7028, allocations: 1.097 MB / 0.8966 GB, free: 4.512 MB / 0.6856 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.694e-05/0.7029, allocations: 1.062 kB / 0.8966 GB, free: 4.512 MB / 0.6856 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.985e-05/0.7029, allocations: 44.69 kB / 0.8967 GB, free: 4.477 MB / 0.6856 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.719e-05/0.703, allocations: 25.03 kB / 0.8967 GB, free: 4.477 MB / 0.6856 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0019/0.7049, allocations: 0.8934 MB / 0.8976 GB, free: 4.031 MB / 0.6856 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 0.006663/0.7116, allocations: 4.926 MB / 0.9024 GB, free: 15.78 MB / 0.7013 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001433/0.713, allocations: 0.6127 MB / 0.903 GB, free: 15.48 MB / 0.7013 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006862/0.7137, allocations: 353.9 kB / 0.9033 GB, free: 15.31 MB / 0.7013 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0006718/0.7144, allocations: 0.8267 MB / 0.9041 GB, free: 14.35 MB / 0.7013 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.354e-05/0.7145, allocations: 38.03 kB / 0.9042 GB, free: 14.3 MB / 0.7013 GB Notification: Performance of pre-optimization done (n=61): time 2.425e-06/0.7145, allocations: 0 / 0.9042 GB, free: 14.3 MB / 0.7013 GB Notification: Performance of matching and sorting (n=61): time 0.00741/0.7219, allocations: 1.691 MB / 0.9058 GB, free: 13.42 MB / 0.7013 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.229e-05/0.722, allocations: 57.47 kB / 0.9059 GB, free: 13.36 MB / 0.7013 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001849/0.7238, allocations: 1.227 MB / 0.9071 GB, free: 12.56 MB / 0.7013 GB Notification: Performance of collectPreVariables (initialization): time 0.0001567/0.724, allocations: 41.7 kB / 0.9071 GB, free: 12.52 MB / 0.7013 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005101/0.7245, allocations: 0.6026 MB / 0.9077 GB, free: 11.91 MB / 0.7013 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002332/0.7247, allocations: 212.9 kB / 0.9079 GB, free: 11.7 MB / 0.7013 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002498/0.725, allocations: 154.6 kB / 0.9081 GB, free: 11.54 MB / 0.7013 GB Notification: Performance of setup shared object (initialization): time 0.0001492/0.7252, allocations: 341.9 kB / 0.9084 GB, free: 11.2 MB / 0.7013 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006645/0.7258, allocations: 285.8 kB / 0.9087 GB, free: 10.92 MB / 0.7013 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008282/0.7267, allocations: 0.4936 MB / 0.9091 GB, free: 10.35 MB / 0.7013 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001363/0.728, allocations: 0.709 MB / 0.9098 GB, free: 9.586 MB / 0.7013 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.19e-06/0.7281, allocations: 0 / 0.9098 GB, free: 9.586 MB / 0.7013 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.004638/0.7327, allocations: 1.269 MB / 0.9111 GB, free: 8.305 MB / 0.7013 GB Notification: Performance of prepare postOptimizeDAE: time 2.49e-05/0.7327, allocations: 9.781 kB / 0.9111 GB, free: 8.297 MB / 0.7013 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.446e-05/0.7328, allocations: 11.98 kB / 0.9111 GB, free: 8.285 MB / 0.7013 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005773/0.7333, allocations: 144.6 kB / 0.9112 GB, free: 8.141 MB / 0.7013 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006084/0.734, allocations: 155.8 kB / 0.9114 GB, free: 7.988 MB / 0.7013 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0008549/0.7348, allocations: 0.7014 MB / 0.9121 GB, free: 7.262 MB / 0.7013 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001262/0.7361, allocations: 126.5 kB / 0.9122 GB, free: 7.141 MB / 0.7013 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.796e-05/0.7362, allocations: 40.05 kB / 0.9122 GB, free: 7.102 MB / 0.7013 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00108/0.7373, allocations: 0.5487 MB / 0.9128 GB, free: 6.547 MB / 0.7013 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0008008/0.7381, allocations: 0.4939 MB / 0.9132 GB, free: 5.977 MB / 0.7013 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001353/0.7395, allocations: 0.709 MB / 0.9139 GB, free: 5.215 MB / 0.7013 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.758e-06/0.7395, allocations: 0 / 0.9139 GB, free: 5.215 MB / 0.7013 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.004788/0.7443, allocations: 1.261 MB / 0.9152 GB, free: 3.941 MB / 0.7013 GB Notification: Performance of prepare postOptimizeDAE: time 1.431e-05/0.7443, allocations: 7.938 kB / 0.9152 GB, free: 3.934 MB / 0.7013 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.029e-05/0.7443, allocations: 8.312 kB / 0.9152 GB, free: 3.926 MB / 0.7013 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004968/0.7448, allocations: 145.4 kB / 0.9153 GB, free: 3.781 MB / 0.7013 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006009/0.7454, allocations: 151.8 kB / 0.9155 GB, free: 3.633 MB / 0.7013 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0007634/0.7462, allocations: 0.7054 MB / 0.9162 GB, free: 2.902 MB / 0.7013 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001294/0.7475, allocations: 103.4 kB / 0.9163 GB, free: 2.801 MB / 0.7013 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.08e-05/0.7476, allocations: 32.05 kB / 0.9163 GB, free: 2.77 MB / 0.7013 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * 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 (78): * Single equations (assignments): 77 * 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 {(1,10)} Notification: Performance of prepare postOptimizeDAE: time 0.0002522/0.7479, allocations: 232.1 kB / 0.9165 GB, free: 2.535 MB / 0.7013 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002707/0.7481, allocations: 130.4 kB / 0.9166 GB, free: 2.406 MB / 0.7013 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004549/0.7527, allocations: 1.267 MB / 0.9179 GB, free: 1.133 MB / 0.7013 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.492e-05/0.7527, allocations: 7.984 kB / 0.9179 GB, free: 1.125 MB / 0.7013 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.292e-06/0.7527, allocations: 0 / 0.9179 GB, free: 1.125 MB / 0.7013 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003993/0.7567, allocations: 1.107 MB / 0.919 GB, free: 15.98 MB / 0.7169 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006728/0.7635, allocations: 2.614 MB / 0.9215 GB, free: 13.26 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.658e-06/0.7635, allocations: 7.984 kB / 0.9215 GB, free: 13.25 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005122/0.764, allocations: 111.8 kB / 0.9216 GB, free: 13.14 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000505/0.7645, allocations: 132.1 kB / 0.9217 GB, free: 13.01 MB / 0.7169 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.226e-05/0.7646, allocations: 27.98 kB / 0.9218 GB, free: 12.98 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004822/0.7694, allocations: 2.613 MB / 0.9243 GB, free: 10.22 MB / 0.7169 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.088e-06/0.7695, allocations: 7.938 kB / 0.9243 GB, free: 10.21 MB / 0.7169 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005365/0.7748, allocations: 1.695 MB / 0.926 GB, free: 8.449 MB / 0.7169 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007736/0.7756, allocations: 315.2 kB / 0.9263 GB, free: 8.121 MB / 0.7169 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001874/0.7758, allocations: 12.11 kB / 0.9263 GB, free: 8.109 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008172/0.7767, allocations: 55.97 kB / 0.9264 GB, free: 8.055 MB / 0.7169 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001416/0.7768, allocations: 68.17 kB / 0.9264 GB, free: 7.988 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.373e-05/0.7769, allocations: 31.98 kB / 0.9265 GB, free: 7.957 MB / 0.7169 GB Notification: Performance of sorting global known variables: time 0.001226/0.7781, allocations: 0.8777 MB / 0.9273 GB, free: 7.078 MB / 0.7169 GB Notification: Performance of sort global known variables: time 1.1e-07/0.7781, allocations: 0 / 0.9273 GB, free: 7.078 MB / 0.7169 GB Notification: Performance of remove unused functions: time 0.002084/0.7802, allocations: 0.7252 MB / 0.928 GB, free: 6.352 MB / 0.7169 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 2 (heaPum.con.vol.dynBal.U,heaPum.eva.vol.dynBal.U) * 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 (55): * Single equations (assignments): 50 * 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 {(1,10)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0009961/0.7812, allocations: 457.6 kB / 0.9285 GB, free: 5.91 MB / 0.7169 GB Notification: Performance of simCode: created initialization part: time 0.002593/0.7838, allocations: 1.119 MB / 0.9295 GB, free: 4.801 MB / 0.7169 GB Notification: Performance of simCode: created event and clocks part: time 4.168e-06/0.7838, allocations: 0 / 0.9295 GB, free: 4.801 MB / 0.7169 GB Notification: Performance of simCode: created simulation system equations: time 0.001434/0.7853, allocations: 0.5645 MB / 0.9301 GB, free: 4.219 MB / 0.7169 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003596/0.7889, allocations: 0.8102 MB / 0.9309 GB, free: 3.477 MB / 0.7169 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003811/0.7927, allocations: 2.265 MB / 0.9331 GB, free: 1.145 MB / 0.7169 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008212/0.7936, allocations: 1.168 MB / 0.9342 GB, free: 15.95 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.00118/0.7947, allocations: 310.6 kB / 0.9345 GB, free: 15.64 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002344/0.795, allocations: 107.4 kB / 0.9346 GB, free: 15.54 MB / 0.7325 GB Notification: Performance of SimCode: time 9.62e-07/0.795, allocations: 4 kB / 0.9346 GB, free: 15.54 MB / 0.7325 GB Notification: Performance of Templates: time 0.052/0.847, allocations: 32.48 MB / 0.9664 GB, free: 15.51 MB / 0.7638 GB make -j1 -f Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar.makefile (rm -f Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar.pipe ; mkfifo Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar.pipe >> ../files/Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar.sim & ./Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar -abortSlowSimulation -alarm=480 -s gbode -lv LOG_STATS > Buildings_8_Buildings.Fluid.HeatPumps.Validation.Carnot_y_etaCar.pipe 2>&1)