Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y.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_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y") translateModel(BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001069/0.001069, allocations: 107.7 kB / 16.41 MB, free: 6.484 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0009948/0.0009949, allocations: 187 kB / 17.34 MB, free: 5.734 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.294/1.294, allocations: 222.9 MB / 241 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002093/0.002093, allocations: 289.2 kB / 291.5 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 0.9389/0.9389, allocations: 169.3 MB / 0.499 GB, free: 4.438 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001783/0.001783, allocations: 95.84 kB / 0.6821 GB, free: 6.977 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.504/0.5058, allocations: 86.97 MB / 0.767 GB, free: 3.945 MB / 0.5294 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y): time 0.07064/0.5765, allocations: 75.17 MB / 0.8404 GB, free: 8.512 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.02096/0.5975, allocations: 15.15 MB / 0.8552 GB, free: 9.312 MB / 0.6231 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003304/0.6008, allocations: 67.62 kB / 0.8553 GB, free: 9.246 MB / 0.6231 GB Notification: Performance of NFTyping.typeComponents: time 0.002699/0.6035, allocations: 0.8306 MB / 0.8561 GB, free: 8.41 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.008091/0.6117, allocations: 2.592 MB / 0.8586 GB, free: 5.809 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.004211/0.6159, allocations: 1.394 MB / 0.86 GB, free: 4.426 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.006675/0.6226, allocations: 4.396 MB / 0.8643 GB, free: 20 kB / 0.6231 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0029/0.6255, allocations: 1.445 MB / 0.8657 GB, free: 14.54 MB / 0.6387 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004371/0.6299, allocations: 1.685 MB / 0.8674 GB, free: 12.86 MB / 0.6387 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002373/0.6323, allocations: 1.214 MB / 0.8685 GB, free: 11.64 MB / 0.6387 GB Notification: Performance of NFPackage.collectConstants: time 0.0005443/0.6329, allocations: 160 kB / 0.8687 GB, free: 11.48 MB / 0.6387 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003794/0.6367, allocations: 1.4 MB / 0.8701 GB, free: 10.08 MB / 0.6387 GB Notification: Performance of NFScalarize.scalarize: time 0.0007308/0.6374, allocations: 398.6 kB / 0.8704 GB, free: 9.688 MB / 0.6387 GB Notification: Performance of NFVerifyModel.verify: time 0.001982/0.6394, allocations: 0.9099 MB / 0.8713 GB, free: 8.773 MB / 0.6387 GB Notification: Performance of NFConvertDAE.convert: time 0.005727/0.6452, allocations: 2.873 MB / 0.8741 GB, free: 5.895 MB / 0.6387 GB Notification: Performance of FrontEnd - DAE generated: time 7.585e-06/0.6452, allocations: 0 / 0.8741 GB, free: 5.895 MB / 0.6387 GB Notification: Performance of FrontEnd: time 1.433e-06/0.6452, allocations: 3.938 kB / 0.8741 GB, free: 5.891 MB / 0.6387 GB Notification: Performance of Transformations before backend: time 8.777e-05/0.6453, allocations: 0 / 0.8741 GB, free: 5.891 MB / 0.6387 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 0.005107/0.6504, allocations: 2.087 MB / 0.8762 GB, free: 3.734 MB / 0.6387 GB Notification: Performance of prepare preOptimizeDAE: time 4.201e-05/0.6505, allocations: 8.031 kB / 0.8762 GB, free: 3.727 MB / 0.6387 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0009844/0.6515, allocations: 230.8 kB / 0.8764 GB, free: 3.5 MB / 0.6387 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00299/0.6545, allocations: 1.523 MB / 0.8779 GB, free: 1.926 MB / 0.6387 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.517e-05/0.6546, allocations: 81.98 kB / 0.878 GB, free: 1.844 MB / 0.6387 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001666/0.6547, allocations: 104 kB / 0.8781 GB, free: 1.742 MB / 0.6387 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002042/0.6568, allocations: 1.096 MB / 0.8791 GB, free: 0.6133 MB / 0.6387 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.629e-05/0.6568, allocations: 4 kB / 0.8791 GB, free: 0.6094 MB / 0.6387 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.764e-05/0.6569, allocations: 40 kB / 0.8792 GB, free: 0.5703 MB / 0.6387 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.831e-05/0.657, allocations: 31.98 kB / 0.8792 GB, free: 0.5391 MB / 0.6387 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001957/0.6589, allocations: 0.8861 MB / 0.8801 GB, free: 15.64 MB / 0.6544 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 0.006491/0.6654, allocations: 4.903 MB / 0.8849 GB, free: 10.46 MB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001401/0.6669, allocations: 0.6158 MB / 0.8855 GB, free: 9.836 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000687/0.6676, allocations: 346.8 kB / 0.8858 GB, free: 9.496 MB / 0.6544 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0006279/0.6682, allocations: 0.8277 MB / 0.8866 GB, free: 8.484 MB / 0.6544 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.514e-05/0.6683, allocations: 39.12 kB / 0.8866 GB, free: 8.434 MB / 0.6544 GB Notification: Performance of pre-optimization done (n=61): time 2.464e-06/0.6683, allocations: 0 / 0.8866 GB, free: 8.434 MB / 0.6544 GB Notification: Performance of matching and sorting (n=61): time 0.007078/0.6754, allocations: 1.689 MB / 0.8883 GB, free: 6.719 MB / 0.6544 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.345e-05/0.6754, allocations: 59.97 kB / 0.8884 GB, free: 6.648 MB / 0.6544 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001973/0.6774, allocations: 1.233 MB / 0.8896 GB, free: 5.398 MB / 0.6544 GB Notification: Performance of collectPreVariables (initialization): time 0.0001169/0.6776, allocations: 41.7 kB / 0.8896 GB, free: 5.352 MB / 0.6544 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005438/0.6781, allocations: 0.6065 MB / 0.8902 GB, free: 4.738 MB / 0.6544 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002351/0.6783, allocations: 212.9 kB / 0.8904 GB, free: 4.527 MB / 0.6544 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002506/0.6786, allocations: 158.4 kB / 0.8905 GB, free: 4.367 MB / 0.6544 GB Notification: Performance of setup shared object (initialization): time 0.0001276/0.6787, allocations: 338 kB / 0.8909 GB, free: 4.031 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006542/0.6794, allocations: 288.7 kB / 0.8911 GB, free: 3.746 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008224/0.6802, allocations: 0.4952 MB / 0.8916 GB, free: 3.18 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00135/0.6816, allocations: 0.7204 MB / 0.8923 GB, free: 2.41 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.701e-06/0.6816, allocations: 4 kB / 0.8923 GB, free: 2.406 MB / 0.6544 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.00451/0.6861, allocations: 1.265 MB / 0.8936 GB, free: 1.129 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 2.685e-05/0.6862, allocations: 11 kB / 0.8936 GB, free: 1.121 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.391e-05/0.6862, allocations: 7.984 kB / 0.8936 GB, free: 1.113 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005865/0.6868, allocations: 140.7 kB / 0.8937 GB, free: 0.9727 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006306/0.6874, allocations: 155.8 kB / 0.8939 GB, free: 0.8203 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0008247/0.6883, allocations: 0.7083 MB / 0.8946 GB, free: 88 kB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001144/0.6894, allocations: 123.1 kB / 0.8947 GB, free: 15.96 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.999e-05/0.6895, allocations: 35.98 kB / 0.8947 GB, free: 15.93 MB / 0.67 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001108/0.6907, allocations: 0.5488 MB / 0.8952 GB, free: 15.38 MB / 0.67 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0008425/0.6915, allocations: 0.489 MB / 0.8957 GB, free: 14.81 MB / 0.67 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001355/0.6929, allocations: 0.7012 MB / 0.8964 GB, free: 14.06 MB / 0.67 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.88e-06/0.6929, allocations: 4 kB / 0.8964 GB, free: 14.06 MB / 0.67 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.004616/0.6975, allocations: 1.261 MB / 0.8976 GB, free: 12.79 MB / 0.67 GB Notification: Performance of prepare postOptimizeDAE: time 1.433e-05/0.6975, allocations: 8.375 kB / 0.8977 GB, free: 12.78 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.969e-06/0.6976, allocations: 11.98 kB / 0.8977 GB, free: 12.77 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005095/0.6981, allocations: 136.8 kB / 0.8978 GB, free: 12.63 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006064/0.6987, allocations: 159.7 kB / 0.8979 GB, free: 12.47 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0007636/0.6995, allocations: 0.6929 MB / 0.8986 GB, free: 11.75 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001165/0.7007, allocations: 111.3 kB / 0.8987 GB, free: 11.64 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.619e-05/0.7007, allocations: 24.06 kB / 0.8988 GB, free: 11.62 MB / 0.67 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 0.0002744/0.701, allocations: 232.1 kB / 0.899 GB, free: 11.39 MB / 0.67 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003777/0.7014, allocations: 134.4 kB / 0.8991 GB, free: 11.25 MB / 0.67 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004567/0.706, allocations: 1.268 MB / 0.9003 GB, free: 9.969 MB / 0.67 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.578e-05/0.706, allocations: 4 kB / 0.9003 GB, free: 9.965 MB / 0.67 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.083e-06/0.706, allocations: 0 / 0.9003 GB, free: 9.965 MB / 0.67 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003977/0.71, allocations: 1.107 MB / 0.9014 GB, free: 8.828 MB / 0.67 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.007207/0.7173, allocations: 2.621 MB / 0.904 GB, free: 6.09 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.042e-05/0.7173, allocations: 4 kB / 0.904 GB, free: 6.086 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004883/0.7178, allocations: 111.8 kB / 0.9041 GB, free: 5.977 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004845/0.7183, allocations: 133.2 kB / 0.9042 GB, free: 5.844 MB / 0.67 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.041e-05/0.7184, allocations: 20 kB / 0.9042 GB, free: 5.824 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004911/0.7233, allocations: 2.626 MB / 0.9068 GB, free: 3.047 MB / 0.67 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.593e-06/0.7233, allocations: 7.938 kB / 0.9068 GB, free: 3.039 MB / 0.67 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005406/0.7287, allocations: 1.699 MB / 0.9085 GB, free: 1.266 MB / 0.67 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007994/0.7296, allocations: 315.2 kB / 0.9088 GB, free: 0.9375 MB / 0.67 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003503/0.7299, allocations: 19.98 kB / 0.9088 GB, free: 0.918 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00104/0.731, allocations: 47.94 kB / 0.9088 GB, free: 0.8711 MB / 0.67 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001447/0.7311, allocations: 60.25 kB / 0.9089 GB, free: 0.8125 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.08e-05/0.7312, allocations: 39.97 kB / 0.9089 GB, free: 0.7734 MB / 0.67 GB Notification: Performance of sorting global known variables: time 0.001657/0.7329, allocations: 0.8818 MB / 0.9098 GB, free: 15.89 MB / 0.6856 GB Notification: Performance of sort global known variables: time 1.51e-07/0.7329, allocations: 0 / 0.9098 GB, free: 15.89 MB / 0.6856 GB Notification: Performance of remove unused functions: time 0.0024/0.7353, allocations: 0.7136 MB / 0.9105 GB, free: 15.18 MB / 0.6856 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 0.001038/0.7364, allocations: 465.1 kB / 0.9109 GB, free: 14.72 MB / 0.6856 GB Notification: Performance of simCode: created initialization part: time 0.002688/0.7391, allocations: 1.125 MB / 0.912 GB, free: 13.6 MB / 0.6856 GB Notification: Performance of simCode: created event and clocks part: time 5.741e-06/0.7391, allocations: 0 / 0.912 GB, free: 13.6 MB / 0.6856 GB Notification: Performance of simCode: created simulation system equations: time 0.001483/0.7406, allocations: 0.5604 MB / 0.9126 GB, free: 13.03 MB / 0.6856 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003724/0.7443, allocations: 0.7973 MB / 0.9134 GB, free: 12.25 MB / 0.6856 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004289/0.7486, allocations: 2.302 MB / 0.9156 GB, free: 9.867 MB / 0.6856 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008385/0.7495, allocations: 1.172 MB / 0.9168 GB, free: 8.668 MB / 0.6856 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003778/0.7499, allocations: 107.4 kB / 0.9169 GB, free: 8.562 MB / 0.6856 GB Notification: Performance of SimCode: time 2.865e-06/0.7499, allocations: 0 / 0.9169 GB, free: 8.562 MB / 0.6856 GB Notification: Performance of Templates: time 0.04387/0.7938, allocations: 31.52 MB / 0.9476 GB, free: 9.246 MB / 0.7169 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y.sim & ./BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.HeatPumps.Examples.Carnot_y.pipe 2>&1)