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 0.001263/0.001263, allocations: 105.4 kB / 15.7 MB, free: 24 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002592/0.002591, allocations: 187.5 kB / 16.64 MB, free: 6.594 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.549/1.549, allocations: 205.1 MB / 222.5 MB, free: 4.535 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 1.79/1.79, allocations: 292.3 MB / 0.549 GB, free: 12.81 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 0.001436/0.001437, allocations: 65.33 kB / 0.6723 GB, free: 26 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2762/0.2776, allocations: 114.6 MB / 0.7841 GB, free: 12.77 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD): time 0.02027/0.2979, allocations: 16.33 MB / 0.8001 GB, free: 12.38 MB / 0.6231 GB Notification: Performance of NFInst.instExpressions: time 0.01006/0.308, allocations: 5.932 MB / 0.8059 GB, free: 6.426 MB / 0.6231 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001223/0.3093, allocations: 47.88 kB / 0.8059 GB, free: 6.379 MB / 0.6231 GB Notification: Performance of NFTyping.typeComponents: time 0.003667/0.313, allocations: 1.361 MB / 0.8073 GB, free: 5.016 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.002617/0.3157, allocations: 1.027 MB / 0.8083 GB, free: 3.984 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.002418/0.3181, allocations: 1.029 MB / 0.8093 GB, free: 2.953 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.004343/0.3225, allocations: 4.139 MB / 0.8133 GB, free: 14.8 MB / 0.6387 GB Notification: Performance of NFFlatten.resolveConnections: time 0.006799/0.3293, allocations: 5.393 MB / 0.8186 GB, free: 9.336 MB / 0.6387 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003441/0.3328, allocations: 1.831 MB / 0.8204 GB, free: 7.5 MB / 0.6387 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003903/0.3367, allocations: 2.182 MB / 0.8225 GB, free: 5.312 MB / 0.6387 GB Notification: Performance of NFPackage.collectConstants: time 0.0009301/0.3377, allocations: 432 kB / 0.8229 GB, free: 4.891 MB / 0.6387 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002463/0.3401, allocations: 1.12 MB / 0.824 GB, free: 3.77 MB / 0.6387 GB Notification: Performance of NFScalarize.scalarize: time 0.001894/0.342, allocations: 1.708 MB / 0.8257 GB, free: 2.059 MB / 0.6387 GB Notification: Performance of NFVerifyModel.verify: time 0.002349/0.3444, allocations: 1.693 MB / 0.8273 GB, free: 368 kB / 0.6387 GB Notification: Performance of NFConvertDAE.convert: time 0.005958/0.3504, allocations: 6.307 MB / 0.8335 GB, free: 10.04 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 6.683e-06/0.3504, allocations: 0 / 0.8335 GB, free: 10.04 MB / 0.6544 GB Notification: Performance of FrontEnd: time 1.834e-06/0.3504, allocations: 0 / 0.8335 GB, free: 10.04 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 0.0001321/0.3505, allocations: 0 / 0.8335 GB, free: 10.04 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 0.007393/0.3579, allocations: 2.939 MB / 0.8363 GB, free: 7.035 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 4.329e-05/0.358, allocations: 15.97 kB / 0.8364 GB, free: 7.02 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01083/0.3688, allocations: 2.003 MB / 0.8383 GB, free: 5.012 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003394/0.3723, allocations: 1.616 MB / 0.8399 GB, free: 3.352 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000174/0.3725, allocations: 218.2 kB / 0.8401 GB, free: 3.137 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0006365/0.3731, allocations: 276.4 kB / 0.8404 GB, free: 2.867 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01228/0.3854, allocations: 5.692 MB / 0.8459 GB, free: 13.07 MB / 0.67 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.915e-05/0.3855, allocations: 0 / 0.8459 GB, free: 13.07 MB / 0.67 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003415/0.3858, allocations: 120 kB / 0.846 GB, free: 12.96 MB / 0.67 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003119/0.3861, allocations: 204.7 kB / 0.8462 GB, free: 12.75 MB / 0.67 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01395/0.4001, allocations: 5.832 MB / 0.8519 GB, free: 6.906 MB / 0.67 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.02778/0.4279, allocations: 22.41 MB / 0.8738 GB, free: 14.47 MB / 0.7012 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00616/0.4341, allocations: 3.017 MB / 0.8768 GB, free: 11.29 MB / 0.7012 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.004877/0.4391, allocations: 1.952 MB / 0.8787 GB, free: 9.312 MB / 0.7012 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002235/0.4393, allocations: 122 kB / 0.8788 GB, free: 9.176 MB / 0.7012 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.193e-05/0.4394, allocations: 51.5 kB / 0.8788 GB, free: 9.117 MB / 0.7012 GB Notification: Performance of pre-optimization done (n=132): time 3.727e-06/0.4394, allocations: 3.938 kB / 0.8788 GB, free: 9.113 MB / 0.7012 GB Notification: Performance of matching and sorting (n=174): time 0.03888/0.4783, allocations: 12.83 MB / 0.8914 GB, free: 12.24 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001272/0.4784, allocations: 230.9 kB / 0.8916 GB, free: 11.97 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001362/0.4798, allocations: 0.9453 MB / 0.8925 GB, free: 11.02 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.0002517/0.4801, allocations: 57.7 kB / 0.8926 GB, free: 10.95 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008769/0.4809, allocations: 1.154 MB / 0.8937 GB, free: 9.781 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0005899/0.4815, allocations: 0.597 MB / 0.8943 GB, free: 9.176 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0007877/0.4823, allocations: 463.7 kB / 0.8947 GB, free: 8.715 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0001533/0.4825, allocations: 341.9 kB / 0.895 GB, free: 8.375 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004664/0.4872, allocations: 1.875 MB / 0.8969 GB, free: 6.488 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004914/0.4921, allocations: 2.467 MB / 0.8993 GB, free: 3.754 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.009898/0.502, allocations: 4.374 MB / 0.9035 GB, free: 15.13 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.573e-05/0.5021, allocations: 4 kB / 0.9036 GB, free: 15.12 MB / 0.7325 GB Notification: Performance of matching and sorting (n=282) (initialization): time 0.01346/0.5156, allocations: 5.423 MB / 0.9088 GB, free: 9.684 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 3.787e-05/0.5156, allocations: 16.28 kB / 0.9089 GB, free: 9.668 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.176e-05/0.5157, allocations: 20 kB / 0.9089 GB, free: 9.648 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003227/0.5189, allocations: 1.236 MB / 0.9101 GB, free: 8.406 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003118/0.5221, allocations: 0.7331 MB / 0.9108 GB, free: 7.672 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.5091/1.031, allocations: 11.48 MB / 0.922 GB, free: 125.4 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003858/1.035, allocations: 461.4 kB / 0.9225 GB, free: 125.3 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004838/1.036, allocations: 111.5 kB / 0.9226 GB, free: 125.3 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.006922/1.042, allocations: 2.946 MB / 0.9254 GB, free: 124.3 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.005007/1.048, allocations: 2.455 MB / 0.9278 GB, free: 123.1 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.009523/1.057, allocations: 4.342 MB / 0.9321 GB, free: 121.2 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.214e-05/1.057, allocations: 11.19 kB / 0.9321 GB, free: 121.2 MB / 0.7325 GB Notification: Performance of matching and sorting (n=282) (initialization_lambda0): time 0.01406/1.071, allocations: 5.354 MB / 0.9373 GB, free: 119.6 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 5.106e-05/1.071, allocations: 13 kB / 0.9373 GB, free: 119.6 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.962e-05/1.071, allocations: 18.95 kB / 0.9373 GB, free: 119.6 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.004009/1.075, allocations: 1.151 MB / 0.9385 GB, free: 119.3 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00335/1.079, allocations: 0.7298 MB / 0.9392 GB, free: 119.3 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01428/1.093, allocations: 11.31 MB / 0.9502 GB, free: 112.8 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003673/1.097, allocations: 458.6 kB / 0.9507 GB, free: 112.7 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003508/1.097, allocations: 109.5 kB / 0.9508 GB, free: 112.7 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 0.0006681/1.098, allocations: 308.8 kB / 0.9511 GB, free: 112.4 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004336/1.098, allocations: 122.1 kB / 0.9512 GB, free: 112.4 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01233/1.111, allocations: 4.963 MB / 0.956 GB, free: 110.5 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.149e-05/1.111, allocations: 18.44 kB / 0.956 GB, free: 110.5 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.867e-05/1.111, allocations: 12.41 kB / 0.9561 GB, free: 110.5 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.76e-05/1.111, allocations: 11 kB / 0.9561 GB, free: 110.4 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01641/1.127, allocations: 8.946 MB / 0.9648 GB, free: 104.9 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.599e-05/1.127, allocations: 11.59 kB / 0.9648 GB, free: 104.9 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002296/1.13, allocations: 0.52 MB / 0.9653 GB, free: 104.7 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.002236/1.132, allocations: 0.9719 MB / 0.9663 GB, free: 104.3 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001502/1.132, allocations: 51.05 kB / 0.9663 GB, free: 104.2 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01135/1.143, allocations: 10.9 MB / 0.977 GB, free: 95.03 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.153e-06/1.143, allocations: 15.94 kB / 0.977 GB, free: 95.01 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.009897/1.153, allocations: 4.764 MB / 0.9816 GB, free: 90.13 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008229/1.154, allocations: 498.5 kB / 0.9821 GB, free: 89.63 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002427/1.154, allocations: 40 kB / 0.9821 GB, free: 89.59 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002346/1.157, allocations: 399.3 kB / 0.9825 GB, free: 89.2 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003474/1.157, allocations: 152.9 kB / 0.9827 GB, free: 89.05 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001362/1.157, allocations: 67.95 kB / 0.9827 GB, free: 88.98 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0007145/1.158, allocations: 0.6942 MB / 0.9834 GB, free: 88.29 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.4e-07/1.158, allocations: 0 / 0.9834 GB, free: 88.29 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.003636/1.162, allocations: 1.19 MB / 0.9846 GB, free: 87.1 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 0.0003241/1.162, allocations: 151.7 kB / 0.9847 GB, free: 86.95 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.01667/1.179, allocations: 8.041 MB / 0.9926 GB, free: 78.87 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 9.107e-06/1.179, allocations: 0 / 0.9926 GB, free: 78.87 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.005399/1.184, allocations: 2.63 MB / 0.9951 GB, free: 76.21 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001525/1.186, allocations: 193.5 kB / 0.9953 GB, free: 76.04 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01769/1.203, allocations: 7.326 MB / 1.002 GB, free: 68.6 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001825/1.205, allocations: 2.306 MB / 1.005 GB, free: 66.26 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.00281/1.208, allocations: 1.224 MB / 1.006 GB, free: 65.04 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004666/1.208, allocations: 123.3 kB / 1.006 GB, free: 64.91 MB / 0.7325 GB Notification: Performance of SimCode: time 9.92e-07/1.208, allocations: 4 kB / 1.006 GB, free: 64.91 MB / 0.7325 GB Notification: Performance of Templates: time 0.04892/1.257, allocations: 36.58 MB / 1.042 GB, free: 28.57 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)