Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.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.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD") translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001187/0.001187, allocations: 111.3 kB / 15.23 MB, free: 0.6406 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001381/0.001381, allocations: 194.8 kB / 16.14 MB, free: 6.703 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.399/1.399, allocations: 205.1 MB / 222 MB, free: 4.773 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.699/1.699, allocations: 292.2 MB / 0.5484 GB, free: 13.67 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 0.001409/0.001409, allocations: 77.77 kB / 0.6708 GB, free: 26.34 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2804/0.2818, allocations: 114.5 MB / 0.7827 GB, free: 14.01 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD): time 0.02053/0.3023, allocations: 16.23 MB / 0.7985 GB, free: 13.72 MB / 0.6231 GB Notification: Performance of NFInst.instExpressions: time 0.01133/0.3137, allocations: 5.971 MB / 0.8044 GB, free: 7.727 MB / 0.6231 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001866/0.3156, allocations: 35.88 kB / 0.8044 GB, free: 7.691 MB / 0.6231 GB Notification: Performance of NFTyping.typeComponents: time 0.004122/0.3198, allocations: 1.269 MB / 0.8056 GB, free: 6.418 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.003706/0.3235, allocations: 0.9694 MB / 0.8066 GB, free: 5.445 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.002932/0.3265, allocations: 0.9428 MB / 0.8075 GB, free: 4.504 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.006994/0.3335, allocations: 6.292 MB / 0.8137 GB, free: 14.2 MB / 0.6387 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01079/0.3443, allocations: 6.089 MB / 0.8196 GB, free: 8.043 MB / 0.6387 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003401/0.3477, allocations: 1.527 MB / 0.8211 GB, free: 6.512 MB / 0.6387 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004375/0.3521, allocations: 2.252 MB / 0.8233 GB, free: 4.254 MB / 0.6387 GB Notification: Performance of NFPackage.collectConstants: time 0.00142/0.3536, allocations: 296 kB / 0.8236 GB, free: 3.965 MB / 0.6387 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00354/0.3571, allocations: 1.147 MB / 0.8247 GB, free: 2.816 MB / 0.6387 GB Notification: Performance of NFScalarize.scalarize: time 0.003375/0.3605, allocations: 1.583 MB / 0.8262 GB, free: 1.23 MB / 0.6387 GB Notification: Performance of NFVerifyModel.verify: time 0.004498/0.365, allocations: 1.537 MB / 0.8277 GB, free: 15.68 MB / 0.6544 GB Notification: Performance of NFConvertDAE.convert: time 0.008862/0.3739, allocations: 6.221 MB / 0.8338 GB, free: 9.449 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 9.918e-06/0.374, allocations: 4 kB / 0.8338 GB, free: 9.445 MB / 0.6544 GB Notification: Performance of FrontEnd: time 9.92e-07/0.374, allocations: 0 / 0.8338 GB, free: 9.445 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 0.000218/0.3742, allocations: 0 / 0.8338 GB, free: 9.445 MB / 0.6544 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 769 * Number of variables: 769 Notification: Performance of Generate backend data structure: time 0.009524/0.3837, allocations: 2.951 MB / 0.8367 GB, free: 6.434 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 6.468e-05/0.3838, allocations: 8.031 kB / 0.8367 GB, free: 6.426 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01096/0.3948, allocations: 2.006 MB / 0.8387 GB, free: 4.414 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004262/0.3991, allocations: 1.6 MB / 0.8402 GB, free: 2.77 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002226/0.3994, allocations: 214.2 kB / 0.8404 GB, free: 2.559 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001509/0.4009, allocations: 276.4 kB / 0.8407 GB, free: 2.289 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01574/0.4166, allocations: 5.688 MB / 0.8462 GB, free: 12.5 MB / 0.67 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.763e-05/0.4168, allocations: 3.938 kB / 0.8463 GB, free: 12.5 MB / 0.67 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004482/0.4172, allocations: 123.9 kB / 0.8464 GB, free: 12.38 MB / 0.67 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003547/0.4176, allocations: 204.7 kB / 0.8466 GB, free: 12.18 MB / 0.67 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01567/0.4333, allocations: 5.824 MB / 0.8523 GB, free: 6.336 MB / 0.67 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03044/0.4638, allocations: 22.57 MB / 0.8743 GB, free: 13.73 MB / 0.7012 GB Notification: Performance of preOpt comSubExp (simulation): time 0.005874/0.4697, allocations: 3.024 MB / 0.8772 GB, free: 10.54 MB / 0.7012 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.004951/0.4747, allocations: 1.94 MB / 0.8791 GB, free: 8.582 MB / 0.7012 GB Notification: Performance of preOpt evalFunc (simulation): time 0.000257/0.4749, allocations: 130 kB / 0.8793 GB, free: 8.438 MB / 0.7012 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.47e-05/0.475, allocations: 47.56 kB / 0.8793 GB, free: 8.383 MB / 0.7012 GB Notification: Performance of pre-optimization done (n=132): time 4.118e-06/0.475, allocations: 0 / 0.8793 GB, free: 8.383 MB / 0.7012 GB Notification: Performance of matching and sorting (n=174): time 0.04309/0.5181, allocations: 12.82 MB / 0.8918 GB, free: 11.52 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001484/0.5183, allocations: 234.9 kB / 0.8921 GB, free: 11.24 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001392/0.5197, allocations: 0.9569 MB / 0.893 GB, free: 10.28 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.0002948/0.52, allocations: 53.7 kB / 0.893 GB, free: 10.22 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007677/0.5208, allocations: 1.154 MB / 0.8942 GB, free: 9.047 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0007132/0.5215, allocations: 0.593 MB / 0.8948 GB, free: 8.445 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0008486/0.5224, allocations: 455.8 kB / 0.8952 GB, free: 7.992 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0001805/0.5226, allocations: 334 kB / 0.8955 GB, free: 7.66 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004733/0.5273, allocations: 1.879 MB / 0.8973 GB, free: 5.77 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005031/0.5324, allocations: 2.459 MB / 0.8997 GB, free: 3.047 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.009251/0.5416, allocations: 4.37 MB / 0.904 GB, free: 14.43 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.023e-05/0.5417, allocations: 8 kB / 0.904 GB, free: 14.42 MB / 0.7325 GB Notification: Performance of matching and sorting (n=282) (initialization): time 0.01259/0.5543, allocations: 5.434 MB / 0.9093 GB, free: 8.965 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 3.526e-05/0.5544, allocations: 12 kB / 0.9093 GB, free: 8.953 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.907e-05/0.5544, allocations: 20.19 kB / 0.9094 GB, free: 8.934 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003357/0.5578, allocations: 1.233 MB / 0.9106 GB, free: 7.695 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003152/0.561, allocations: 0.737 MB / 0.9113 GB, free: 6.957 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.5063/1.067, allocations: 10.52 MB / 0.9216 GB, free: 126.2 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003375/1.071, allocations: 463.8 kB / 0.922 GB, free: 126.2 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004052/1.071, allocations: 109.8 kB / 0.9221 GB, free: 126.2 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.006459/1.078, allocations: 2.952 MB / 0.925 GB, free: 125.4 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.005165/1.083, allocations: 2.446 MB / 0.9274 GB, free: 124.2 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.009191/1.092, allocations: 4.355 MB / 0.9316 GB, free: 122.3 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.8e-05/1.092, allocations: 8.922 kB / 0.9316 GB, free: 122.3 MB / 0.7325 GB Notification: Performance of matching and sorting (n=282) (initialization_lambda0): time 0.01392/1.106, allocations: 5.355 MB / 0.9369 GB, free: 120.7 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 4.981e-05/1.106, allocations: 13.78 kB / 0.9369 GB, free: 120.7 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.487e-05/1.106, allocations: 17.91 kB / 0.9369 GB, free: 120.7 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003491/1.11, allocations: 1.15 MB / 0.938 GB, free: 120.4 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00347/1.113, allocations: 0.7363 MB / 0.9387 GB, free: 120.4 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01422/1.127, allocations: 10.38 MB / 0.9489 GB, free: 114.4 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003432/1.131, allocations: 453.6 kB / 0.9493 GB, free: 114.4 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003498/1.131, allocations: 113 kB / 0.9494 GB, free: 114.3 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 81 * 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 (212): * Single equations (assignments): 210 * 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): 2 systems {(7,29,63.3%), (6,30,83.3%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0006955/1.132, allocations: 318.9 kB / 0.9497 GB, free: 114.1 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004767/1.133, allocations: 122.9 kB / 0.9498 GB, free: 114.1 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01169/1.144, allocations: 4.964 MB / 0.9547 GB, free: 112 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.242e-05/1.144, allocations: 21.94 kB / 0.9547 GB, free: 112 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.009e-05/1.144, allocations: 11.62 kB / 0.9547 GB, free: 112 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.206e-05/1.144, allocations: 14.45 kB / 0.9547 GB, free: 112 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01658/1.161, allocations: 8.949 MB / 0.9635 GB, free: 106.5 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.546e-05/1.161, allocations: 7.469 kB / 0.9635 GB, free: 106.5 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002087/1.163, allocations: 0.5301 MB / 0.964 GB, free: 106.3 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.002347/1.165, allocations: 0.9647 MB / 0.9649 GB, free: 105.8 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001867/1.166, allocations: 67.05 kB / 0.965 GB, free: 105.8 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01045/1.176, allocations: 9.964 MB / 0.9747 GB, free: 97.23 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.061e-06/1.176, allocations: 8 kB / 0.9747 GB, free: 97.22 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.009346/1.186, allocations: 4.77 MB / 0.9794 GB, free: 92.34 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008807/1.186, allocations: 0.4899 MB / 0.9799 GB, free: 91.83 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002676/1.187, allocations: 39.91 kB / 0.9799 GB, free: 91.79 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002231/1.189, allocations: 399.3 kB / 0.9803 GB, free: 91.4 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003842/1.189, allocations: 160.9 kB / 0.9804 GB, free: 91.24 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001312/1.19, allocations: 63.95 kB / 0.9805 GB, free: 91.18 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.000801/1.19, allocations: 0.6903 MB / 0.9812 GB, free: 90.49 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.4e-07/1.19, allocations: 0 / 0.9812 GB, free: 90.49 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.004422/1.195, allocations: 1.184 MB / 0.9823 GB, free: 89.3 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * 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 simulation (103): * Single equations (assignments): 101 * 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): 2 systems {(4,32,100.0%), (6,30,83.3%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0003274/1.195, allocations: 163.4 kB / 0.9825 GB, free: 89.15 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.01666/1.212, allocations: 8.015 MB / 0.9903 GB, free: 81.1 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 1.482e-05/1.212, allocations: 4 kB / 0.9903 GB, free: 81.09 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.005396/1.217, allocations: 2.622 MB / 0.9929 GB, free: 78.44 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001651/1.219, allocations: 188.1 kB / 0.9931 GB, free: 78.26 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01777/1.237, allocations: 8.564 MB / 1.001 GB, free: 69.59 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001983/1.239, allocations: 2.314 MB / 1.004 GB, free: 67.24 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.003437/1.242, allocations: 1.222 MB / 1.005 GB, free: 66.02 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005192/1.243, allocations: 127.3 kB / 1.005 GB, free: 65.89 MB / 0.7325 GB Notification: Performance of SimCode: time 1.582e-06/1.243, allocations: 0 / 1.005 GB, free: 65.89 MB / 0.7325 GB Notification: Performance of Templates: time 0.04852/1.291, allocations: 35.68 MB / 1.04 GB, free: 30.42 MB / 0.7325 GB make -j1 -f Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.makefile (rm -f Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe ; mkfifo Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe ; head -c 1048576 < Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe >> ../files/Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.sim & ./Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe 2>&1)