Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent.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.Airflow.Multizone.Examples.TrickleVent,tolerance=1e-06,outputFormat="empty",numberOfIntervals=8640,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent")
translateModel(IBPSA.Airflow.Multizone.Examples.TrickleVent,tolerance=1e-06,outputFormat="empty",numberOfIntervals=8640,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009032/0.0009031, allocations: 90.22 kB / 16.66 MB, free: 6.594 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0009781/0.0009782, allocations: 174.9 kB / 17.57 MB, free: 6.184 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.349/1.349, allocations: 223.3 MB / 241.6 MB, free: 216 kB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7345/0.7345, allocations: 115.5 MB / 408.2 MB, free: 7.152 MB / 318.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.0003712/0.0003711, allocations: 8 kB / 496.5 MB, free: 15.69 MB / 414.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3838/0.3841, allocations: 77.52 MB / 0.5606 GB, free: 36.23 MB / 446.1 MB
Notification: Performance of NFInst.instantiate(IBPSA.Airflow.Multizone.Examples.TrickleVent): time 0.2029/0.5871, allocations: 183.2 MB / 0.7395 GB, free: 11.6 MB / 0.5762 GB
Notification: Performance of NFInst.instExpressions: time 0.4161/1.003, allocations: 16.32 MB / 0.7554 GB, free: 2.047 MB / 0.5762 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.002809/1.006, allocations: 45.09 kB / 0.7555 GB, free: 2.047 MB / 0.5762 GB
Notification: Performance of NFTyping.typeComponents: time 0.002673/1.009, allocations: 0.6393 MB / 0.7561 GB, free: 2.043 MB / 0.5762 GB
Notification: Performance of NFTyping.typeBindings: time 0.008025/1.017, allocations: 2.201 MB / 0.7583 GB, free: 1.961 MB / 0.5762 GB
Notification: Performance of NFTyping.typeClassSections: time 0.005943/1.023, allocations: 1.781 MB / 0.76 GB, free: 1.906 MB / 0.5762 GB
Notification: Performance of NFFlatten.flatten: time 0.008023/1.031, allocations: 4.58 MB / 0.7645 GB, free: 1.895 MB / 0.5762 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.003615/1.035, allocations: 1.758 MB / 0.7662 GB, free: 17.62 MB / 0.5919 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.005096/1.04, allocations: 1.242 MB / 0.7674 GB, free: 17.61 MB / 0.5919 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.003002/1.043, allocations: 1.164 MB / 0.7685 GB, free: 17.6 MB / 0.5919 GB
Notification: Performance of NFPackage.collectConstants: time 0.0005594/1.043, allocations: 63.53 kB / 0.7686 GB, free: 17.6 MB / 0.5919 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.00588/1.049, allocations: 2.214 MB / 0.7708 GB, free: 17.57 MB / 0.5919 GB
Notification: Performance of NFScalarize.scalarize: time 0.001104/1.05, allocations: 0.5722 MB / 0.7713 GB, free: 17.57 MB / 0.5919 GB
Notification: Performance of NFVerifyModel.verify: time 0.00245/1.053, allocations: 1.076 MB / 0.7724 GB, free: 17.54 MB / 0.5919 GB
Notification: Performance of NFConvertDAE.convert: time 0.005164/1.058, allocations: 2.87 MB / 0.7752 GB, free: 17.3 MB / 0.5919 GB
Notification: Performance of FrontEnd - DAE generated: time 5.731e-06/1.058, allocations: 2.906 kB / 0.7752 GB, free: 17.3 MB / 0.5919 GB
Notification: Performance of FrontEnd: time 2.465e-06/1.058, allocations: 0.9688 kB / 0.7752 GB, free: 17.3 MB / 0.5919 GB
Notification: Performance of Transformations before backend: time 0.0001105/1.058, allocations: 0 / 0.7752 GB, free: 17.3 MB / 0.5919 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 454
 * Number of variables: 454
Notification: Performance of Generate backend data structure: time 0.006176/1.064, allocations: 2.41 MB / 0.7775 GB, free: 15.99 MB / 0.5919 GB
Notification: Performance of prepare preOptimizeDAE: time 5.39e-05/1.064, allocations: 13.44 kB / 0.7775 GB, free: 15.98 MB / 0.5919 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004245/1.069, allocations: 0.5573 MB / 0.7781 GB, free: 15.84 MB / 0.5919 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.003786/1.072, allocations: 1.512 MB / 0.7796 GB, free: 15.38 MB / 0.5919 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001544/1.073, allocations: 136.6 kB / 0.7797 GB, free: 15.37 MB / 0.5919 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004456/1.073, allocations: 174.8 kB / 0.7799 GB, free: 15.37 MB / 0.5919 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.004381/1.077, allocations: 2.056 MB / 0.7819 GB, free: 15.11 MB / 0.5919 GB
Notification: Performance of preOpt findStateOrder (simulation): time 4.055e-05/1.078, allocations: 6.141 kB / 0.7819 GB, free: 15.11 MB / 0.5919 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001945/1.078, allocations: 77.88 kB / 0.7819 GB, free: 15.11 MB / 0.5919 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.342e-05/1.078, allocations: 67.78 kB / 0.782 GB, free: 15.11 MB / 0.5919 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003941/1.082, allocations: 2.112 MB / 0.7841 GB, free: 15.09 MB / 0.5919 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 0.01294/1.095, allocations: 7.685 MB / 0.7916 GB, free: 11.78 MB / 0.5919 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.002732/1.098, allocations: 1.692 MB / 0.7932 GB, free: 11.54 MB / 0.5919 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.001228/1.099, allocations: 0.7665 MB / 0.794 GB, free: 11.52 MB / 0.5919 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0007837/1.1, allocations: 0.6541 MB / 0.7946 GB, free: 10.86 MB / 0.5919 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001723/1.101, allocations: 0.9828 MB / 0.7956 GB, free: 10.77 MB / 0.5919 GB
Notification: Performance of pre-optimization done (n=151): time 4.478e-06/1.101, allocations: 1.859 kB / 0.7956 GB, free: 10.77 MB / 0.5919 GB
Notification: Performance of matching and sorting (n=151): time 0.006346/1.108, allocations: 2.687 MB / 0.7982 GB, free: 10.12 MB / 0.5919 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001304/1.108, allocations: 221.8 kB / 0.7984 GB, free: 9.867 MB / 0.5919 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002246/1.11, allocations: 1.525 MB / 0.7999 GB, free: 9.461 MB / 0.5919 GB
Notification: Performance of collectPreVariables (initialization): time 0.0003366/1.111, allocations: 52.33 kB / 0.7999 GB, free: 9.43 MB / 0.5919 GB
Notification: Performance of collectInitialEqns (initialization): time 0.000792/1.111, allocations: 0.8481 MB / 0.8008 GB, free: 9.039 MB / 0.5919 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0006431/1.112, allocations: 0.4974 MB / 0.8013 GB, free: 8.676 MB / 0.5919 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001749/1.112, allocations: 115.9 kB / 0.8014 GB, free: 8.645 MB / 0.5919 GB
Notification: Performance of setup shared object (initialization): time 0.000147/1.112, allocations: 365.1 kB / 0.8017 GB, free: 8.316 MB / 0.5919 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.00124/1.114, allocations: 0.6007 MB / 0.8023 GB, free: 8.227 MB / 0.5919 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.001345/1.115, allocations: 0.7705 MB / 0.8031 GB, free: 8.008 MB / 0.5919 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.002481/1.117, allocations: 1.394 MB / 0.8044 GB, free: 7.793 MB / 0.5919 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.014e-06/1.117, allocations: 0 / 0.8044 GB, free: 7.793 MB / 0.5919 GB
Notification: Performance of matching and sorting (n=176) (initialization): time 0.004105/1.122, allocations: 1.817 MB / 0.8062 GB, free: 7.395 MB / 0.5919 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0001381/1.122, allocations: 154.9 kB / 0.8063 GB, free: 7.234 MB / 0.5919 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.181e-05/1.122, allocations: 3 kB / 0.8063 GB, free: 7.234 MB / 0.5919 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0008249/1.123, allocations: 145.4 kB / 0.8065 GB, free: 7.172 MB / 0.5919 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001465/1.124, allocations: 327.9 kB / 0.8068 GB, free: 7.121 MB / 0.5919 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004314/1.128, allocations: 4.228 MB / 0.8109 GB, free: 3.16 MB / 0.5919 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002338/1.131, allocations: 209.2 kB / 0.8111 GB, free: 3.062 MB / 0.5919 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001804/1.131, allocations: 58.06 kB / 0.8112 GB, free: 3.055 MB / 0.5919 GB
Notification: Performance of prepare postOptimizeDAE: time 8.406e-06/1.131, allocations: 2.781 kB / 0.8112 GB, free: 3.055 MB / 0.5919 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.003203/1.134, allocations: 1.618 MB / 0.8128 GB, free: 2.785 MB / 0.5919 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.564e-06/1.134, allocations: 6.406 kB / 0.8128 GB, free: 2.785 MB / 0.5919 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0007298/1.135, allocations: 150.1 kB / 0.8129 GB, free: 2.723 MB / 0.5919 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001416/1.136, allocations: 318.1 kB / 0.8132 GB, free: 2.676 MB / 0.5919 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003851/1.14, allocations: 4.23 MB / 0.8173 GB, free: 14.71 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002172/1.142, allocations: 205.6 kB / 0.8175 GB, free: 14.61 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001768/1.143, allocations: 54.12 kB / 0.8176 GB, free: 14.6 MB / 0.6075 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 8
 * Number of states: 0 ()
 * Number of discrete variables: 17 (weaDat.conTim.canRepeatWeatherFile,weaDat.conTimMin.canRepeatWeatherFile,weaDat.decAng.tNext,$PRE.weaDat.decAng.tNext,weaDat.eqnTim.tNext,$PRE.weaDat.eqnTim.tNext,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,weaDat.locTim.tNext,$PRE.weaDat.locTim.tNext,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (170):
 * Single equations (assignments): 167
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 3
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 2 systems
   {(1,2,100.0%), (1,2,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(1,2)}
Notification: Performance of prepare postOptimizeDAE: time 0.001216/1.144, allocations: 0.5498 MB / 0.8181 GB, free: 14.38 MB / 0.6075 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004606/1.144, allocations: 184.5 kB / 0.8183 GB, free: 14.28 MB / 0.6075 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004054/1.148, allocations: 2.038 MB / 0.8203 GB, free: 13.8 MB / 0.6075 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.529e-05/1.148, allocations: 16.16 kB / 0.8203 GB, free: 13.8 MB / 0.6075 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 6.712e-06/1.148, allocations: 4 kB / 0.8203 GB, free: 13.79 MB / 0.6075 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002993/1.151, allocations: 1.69 MB / 0.822 GB, free: 13.38 MB / 0.6075 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0069/1.158, allocations: 3.878 MB / 0.8258 GB, free: 12.2 MB / 0.6075 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.528e-06/1.158, allocations: 3.984 kB / 0.8258 GB, free: 12.19 MB / 0.6075 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001402/1.16, allocations: 320 kB / 0.8261 GB, free: 12.14 MB / 0.6075 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0007082/1.161, allocations: 138.9 kB / 0.8262 GB, free: 12.09 MB / 0.6075 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001448/1.161, allocations: 47.56 kB / 0.8262 GB, free: 12.07 MB / 0.6075 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003745/1.164, allocations: 4.232 MB / 0.8304 GB, free: 8.117 MB / 0.6075 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.469e-06/1.165, allocations: 3.938 kB / 0.8304 GB, free: 8.113 MB / 0.6075 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005594/1.17, allocations: 2.828 MB / 0.8331 GB, free: 6.793 MB / 0.6075 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.001377/1.172, allocations: 489.5 kB / 0.8336 GB, free: 6.398 MB / 0.6075 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004028/1.172, allocations: 34.44 kB / 0.8336 GB, free: 6.387 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001665/1.174, allocations: 159.3 kB / 0.8338 GB, free: 6.254 MB / 0.6075 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000279/1.174, allocations: 114.8 kB / 0.8339 GB, free: 6.156 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000149/1.174, allocations: 63.52 kB / 0.834 GB, free: 6.105 MB / 0.6075 GB
Notification: Performance of sorting global known variables: time 0.001599/1.176, allocations: 1.061 MB / 0.835 GB, free: 5.328 MB / 0.6075 GB
Notification: Performance of sort global known variables: time 1.3e-07/1.176, allocations: 0 / 0.835 GB, free: 5.328 MB / 0.6075 GB
Notification: Performance of remove unused functions: time 0.004062/1.18, allocations: 1.139 MB / 0.8361 GB, free: 4.273 MB / 0.6075 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 5 (room.dynBal.medium.Xi[1],room.dynBal.U,room.dynBal.m,tabDat_m_flow.mExc,tabDat_V_flow.mExc)
 * Number of discrete variables: 10 ($whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,weaDat.locTim.tNext,weaDat.conTimMin.tNext,weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.decAng.tNext)
 * Number of discrete states: 5 (weaDat.conTimMin.tNext,weaDat.decAng.tNext,weaDat.eqnTim.tNext,weaDat.conTim.tNext,weaDat.locTim.tNext)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (158):
 * Single equations (assignments): 150
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 5
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 3
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 2 systems
   {(1,2,100.0%), (1,2,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(1,3)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.002346/1.182, allocations: 0.796 MB / 0.8369 GB, free: 3.777 MB / 0.6075 GB
Notification: Performance of simCode: created initialization part: time 0.005787/1.188, allocations: 3.056 MB / 0.8399 GB, free: 0.957 MB / 0.6075 GB
Notification: Performance of simCode: created event and clocks part: time 9.117e-06/1.188, allocations: 448 / 0.8399 GB, free: 0.9531 MB / 0.6075 GB
Notification: Performance of simCode: created simulation system equations: time 0.002108/1.19, allocations: 1.189 MB / 0.841 GB, free: 15.75 MB / 0.6231 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00485/1.195, allocations: 0.6959 MB / 0.8417 GB, free: 15.07 MB / 0.6231 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009218/1.204, allocations: 4.958 MB / 0.8466 GB, free: 10.1 MB / 0.6231 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001541/1.206, allocations: 1.51 MB / 0.848 GB, free: 8.551 MB / 0.6231 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009269/1.207, allocations: 194.2 kB / 0.8482 GB, free: 8.367 MB / 0.6231 GB
Notification: Performance of SimCode: time 8.22e-07/1.207, allocations: 0 / 0.8482 GB, free: 8.367 MB / 0.6231 GB
Notification: Performance of Templates: time 0.07574/1.283, allocations: 55.5 MB / 0.9024 GB, free: 1.023 MB / 0.67 GB
make -j1 -f IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent.makefile
(rm -f IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent.pipe ; mkfifo IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent.pipe >> ../files/IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent.sim & ./IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent  -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Airflow.Multizone.Examples.TrickleVent.pipe 2>&1)