Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir.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/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-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(IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir") translateModel(IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001391/0.001391, allocations: 101.6 kB / 16.4 MB, free: 6.508 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0014/0.0014, allocations: 196 kB / 17.34 MB, free: 5.742 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.235/1.235, allocations: 222.9 MB / 241 MB, free: 15.15 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.6586/0.6586, allocations: 115.3 MB / 406.5 MB, free: 6.16 MB / 318.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001169/0.001169, allocations: 65.36 kB / 0.5577 GB, free: 32.39 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.136/0.1372, allocations: 76.18 MB / 0.6321 GB, free: 4.422 MB / 478.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir): time 0.5375/0.6747, allocations: 198.8 MB / 0.8262 GB, free: 8.598 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.014/0.6888, allocations: 10.36 MB / 0.8364 GB, free: 4.188 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002297/0.6911, allocations: 57.5 kB / 0.8364 GB, free: 4.168 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.001623/0.6928, allocations: 0.5724 MB / 0.837 GB, free: 3.695 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.0051/0.6979, allocations: 1.976 MB / 0.8389 GB, free: 2.453 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.003405/0.7013, allocations: 1.383 MB / 0.8402 GB, free: 1.562 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.003664/0.705, allocations: 2.819 MB / 0.843 GB, free: 15.99 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001545/0.7066, allocations: 1.173 MB / 0.8441 GB, free: 15.23 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004107/0.7107, allocations: 1.689 MB / 0.8458 GB, free: 14.32 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001593/0.7123, allocations: 0.9657 MB / 0.8467 GB, free: 13.78 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 0.0001719/0.7125, allocations: 122.6 kB / 0.8469 GB, free: 13.78 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00383/0.7163, allocations: 2.148 MB / 0.849 GB, free: 12.84 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.0003953/0.7167, allocations: 433 kB / 0.8494 GB, free: 12.53 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0007218/0.7175, allocations: 0.7016 MB / 0.8501 GB, free: 12.05 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.003586/0.721, allocations: 2.517 MB / 0.8525 GB, free: 10.54 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 3.426e-06/0.7211, allocations: 6.156 kB / 0.8525 GB, free: 10.53 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.353e-06/0.7211, allocations: 0 / 0.8525 GB, free: 10.53 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 1.505e-05/0.7211, allocations: 0 / 0.8525 GB, free: 10.53 MB / 0.6075 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 253 * Number of variables: 253 Notification: Performance of Generate backend data structure: time 0.002673/0.7238, allocations: 1.828 MB / 0.8543 GB, free: 8.793 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 3.388e-05/0.7238, allocations: 8.031 kB / 0.8543 GB, free: 8.785 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002058/0.7259, allocations: 373.8 kB / 0.8547 GB, free: 8.418 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001538/0.7274, allocations: 0.9676 MB / 0.8556 GB, free: 7.406 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.901e-05/0.7275, allocations: 85.92 kB / 0.8557 GB, free: 7.32 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001408/0.7277, allocations: 103.9 kB / 0.8558 GB, free: 7.219 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001666/0.7293, allocations: 1.111 MB / 0.8569 GB, free: 6.051 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.491e-05/0.7294, allocations: 4 kB / 0.8569 GB, free: 6.047 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.105e-05/0.7295, allocations: 43.94 kB / 0.8569 GB, free: 6.004 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.853e-05/0.7295, allocations: 34 kB / 0.857 GB, free: 5.969 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001341/0.7308, allocations: 0.808 MB / 0.8577 GB, free: 5.164 MB / 0.6075 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 0.005316/0.7362, allocations: 5.062 MB / 0.8627 GB, free: 15.75 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001156/0.7373, allocations: 0.6974 MB / 0.8634 GB, free: 15.04 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005321/0.7379, allocations: 368.3 kB / 0.8637 GB, free: 14.68 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005551/0.7384, allocations: 315.9 kB / 0.864 GB, free: 14.32 MB / 0.6231 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.949e-05/0.7385, allocations: 39.62 kB / 0.8641 GB, free: 14.27 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=70): time 2.385e-06/0.7385, allocations: 4 kB / 0.8641 GB, free: 14.27 MB / 0.6231 GB Notification: Performance of matching and sorting (n=70): time 0.001808/0.7403, allocations: 0.9427 MB / 0.865 GB, free: 13.32 MB / 0.6231 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.733e-05/0.7404, allocations: 63.91 kB / 0.865 GB, free: 13.24 MB / 0.6231 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009449/0.7413, allocations: 0.8724 MB / 0.8659 GB, free: 12.35 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 5.451e-05/0.7414, allocations: 41.7 kB / 0.8659 GB, free: 12.3 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003848/0.7418, allocations: 0.5623 MB / 0.8665 GB, free: 11.73 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001939/0.742, allocations: 252.3 kB / 0.8667 GB, free: 11.48 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001921/0.7422, allocations: 138.6 kB / 0.8669 GB, free: 11.34 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.0001192/0.7423, allocations: 333.9 kB / 0.8672 GB, free: 11.01 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000443/0.7427, allocations: 260.7 kB / 0.8674 GB, free: 10.75 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005588/0.7433, allocations: 447.1 kB / 0.8678 GB, free: 10.24 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001015/0.7443, allocations: 0.7054 MB / 0.8685 GB, free: 9.473 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.971e-06/0.7444, allocations: 8.562 kB / 0.8685 GB, free: 9.465 MB / 0.6231 GB Notification: Performance of matching and sorting (n=94) (initialization): time 0.001344/0.7457, allocations: 0.8358 MB / 0.8694 GB, free: 8.621 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.616e-05/0.7457, allocations: 4 kB / 0.8694 GB, free: 8.617 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.466e-06/0.7457, allocations: 4 kB / 0.8694 GB, free: 8.613 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.215e-05/0.7458, allocations: 12 kB / 0.8694 GB, free: 8.602 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001517/0.7473, allocations: 259.8 kB / 0.8696 GB, free: 8.348 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001503/0.7488, allocations: 1.493 MB / 0.8711 GB, free: 6.711 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007401/0.7496, allocations: 87.2 kB / 0.8712 GB, free: 6.625 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.535e-05/0.7496, allocations: 35.98 kB / 0.8712 GB, free: 6.59 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0007872/0.7504, allocations: 474.6 kB / 0.8717 GB, free: 6.121 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005702/0.751, allocations: 447.7 kB / 0.8721 GB, free: 5.613 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001016/0.752, allocations: 0.7092 MB / 0.8728 GB, free: 4.844 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.889e-06/0.752, allocations: 7.984 kB / 0.8728 GB, free: 4.836 MB / 0.6231 GB Notification: Performance of matching and sorting (n=94) (initialization_lambda0): time 0.001328/0.7534, allocations: 0.8314 MB / 0.8736 GB, free: 3.996 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.162e-05/0.7534, allocations: 8 kB / 0.8736 GB, free: 3.988 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.161e-06/0.7534, allocations: 4 kB / 0.8736 GB, free: 3.984 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 8.406e-06/0.7534, allocations: 8.625 kB / 0.8736 GB, free: 3.977 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001424/0.7549, allocations: 263.6 kB / 0.8739 GB, free: 3.719 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001248/0.7561, allocations: 1.496 MB / 0.8753 GB, free: 2.078 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007041/0.7568, allocations: 63.5 kB / 0.8754 GB, free: 2.016 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.116e-05/0.7569, allocations: 35.98 kB / 0.8754 GB, free: 1.98 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 21 * Number of states: 0 () * Number of discrete variables: 4 (PI1.I.trigger_internal,PI.I.trigger_internal,QLat.local_reset,QSen.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (94): * Single equations (assignments): 93 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0002133/0.7571, allocations: 228 kB / 0.8756 GB, free: 1.75 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001576/0.7573, allocations: 114.6 kB / 0.8757 GB, free: 1.637 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001607/0.7589, allocations: 0.7864 MB / 0.8765 GB, free: 0.8359 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.183e-06/0.7589, allocations: 12 kB / 0.8765 GB, free: 0.8242 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.274e-06/0.7589, allocations: 64 / 0.8765 GB, free: 0.8242 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001209/0.7602, allocations: 0.7156 MB / 0.8772 GB, free: 76 kB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003007/0.7632, allocations: 1.934 MB / 0.8791 GB, free: 14.07 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.534e-06/0.7632, allocations: 4 kB / 0.8791 GB, free: 14.06 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006736/0.7639, allocations: 139.8 kB / 0.8793 GB, free: 13.93 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003043/0.7642, allocations: 40.83 kB / 0.8793 GB, free: 13.88 MB / 0.6387 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.624e-05/0.7643, allocations: 16 kB / 0.8793 GB, free: 13.87 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001256/0.7655, allocations: 1.454 MB / 0.8807 GB, free: 12.27 MB / 0.6387 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.864e-06/0.7655, allocations: 0 / 0.8807 GB, free: 12.27 MB / 0.6387 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001945/0.7675, allocations: 1.226 MB / 0.8819 GB, free: 11 MB / 0.6387 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003378/0.7678, allocations: 259.5 kB / 0.8822 GB, free: 10.73 MB / 0.6387 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001069/0.7679, allocations: 12 kB / 0.8822 GB, free: 10.71 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005338/0.7685, allocations: 27.98 kB / 0.8822 GB, free: 10.69 MB / 0.6387 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.243e-05/0.7686, allocations: 48.38 kB / 0.8823 GB, free: 10.64 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.077e-05/0.7686, allocations: 20 kB / 0.8823 GB, free: 10.62 MB / 0.6387 GB Notification: Performance of sorting global known variables: time 0.0007057/0.7693, allocations: 0.6045 MB / 0.8829 GB, free: 10.01 MB / 0.6387 GB Notification: Performance of sort global known variables: time 1.1e-07/0.7693, allocations: 0 / 0.8829 GB, free: 10.01 MB / 0.6387 GB Notification: Performance of remove unused functions: time 0.001328/0.7707, allocations: 0.5297 MB / 0.8834 GB, free: 9.477 MB / 0.6387 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 7 (vol1.dynBal.medium.Xi[1],vol1.dynBal.U,vol1.dynBal.m,QSen.y,QLat.y,PI.I.y,PI1.I.y) * 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 (70): * Single equations (assignments): 69 * 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 {(1,1)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0004872/0.7712, allocations: 224.5 kB / 0.8836 GB, free: 9.254 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.00339/0.7746, allocations: 1.209 MB / 0.8848 GB, free: 8.043 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 4.468e-06/0.7746, allocations: 0 / 0.8848 GB, free: 8.043 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.0007432/0.7753, allocations: 454.7 kB / 0.8852 GB, free: 7.59 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002161/0.7775, allocations: 0.509 MB / 0.8857 GB, free: 7.09 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003506/0.781, allocations: 2.177 MB / 0.8878 GB, free: 4.863 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006653/0.7817, allocations: 1.144 MB / 0.889 GB, free: 3.691 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.0008302/0.7825, allocations: 268.8 kB / 0.8892 GB, free: 3.426 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002054/0.7828, allocations: 87.36 kB / 0.8893 GB, free: 3.34 MB / 0.6387 GB Notification: Performance of SimCode: time 1.973e-06/0.7828, allocations: 0 / 0.8893 GB, free: 3.34 MB / 0.6387 GB Notification: Performance of Templates: time 0.02873/0.8115, allocations: 17.82 MB / 0.9067 GB, free: 1.746 MB / 0.6544 GB make -j1 -f IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir.makefile (rm -f IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir.sim & ./IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.MixingVolumes.Examples.MixingVolumeMoistAir.pipe 2>&1)