Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false)
Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo)
Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo)
Running command: translateModel(Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow")
translateModel(Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.484/1.484, allocations: 252 MB / 268 MB, free: 10.84 MB / 218.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001116/0.001116, allocations: 178.8 kB / 327.6 MB, free: 2.07 MB / 250.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.731/1.731, allocations: 205.4 MB / 0.5786 GB, free: 20.12 MB / 426.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0007881/0.0007882, allocations: 86.3 kB / 0.6832 GB, free: 12.75 MB / 0.5105 GB
Notification: Performance of FrontEnd - loaded program: time 0.0003768/0.0003769, allocations: 10.47 kB / 0.7977 GB, free: 135.1 MB / 0.6042 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.244/0.2444, allocations: 106.3 MB / 0.9016 GB, free: 63.38 MB / 0.6042 GB
Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow): time 0.002789/0.2473, allocations: 2.387 MB / 0.9039 GB, free: 60.96 MB / 0.6042 GB
Notification: Performance of NFInst.instExpressions: time 0.001892/0.2492, allocations: 0.9789 MB / 0.9048 GB, free: 59.98 MB / 0.6042 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0005589/0.2498, allocations: 11.94 kB / 0.9049 GB, free: 59.96 MB / 0.6042 GB
Notification: Performance of NFTyping.typeComponents: time 0.0003016/0.2501, allocations: 55.5 kB / 0.9049 GB, free: 59.91 MB / 0.6042 GB
Notification: Performance of NFTyping.typeBindings: time 0.000337/0.2505, allocations: 43.59 kB / 0.9049 GB, free: 59.87 MB / 0.6042 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0004301/0.2509, allocations: 188.8 kB / 0.9051 GB, free: 59.68 MB / 0.6042 GB
Notification: Performance of NFFlatten.flatten: time 0.0005347/0.2515, allocations: 0.5359 MB / 0.9056 GB, free: 59.15 MB / 0.6042 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0005064/0.252, allocations: 308.5 kB / 0.9059 GB, free: 58.84 MB / 0.6042 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.000185/0.2522, allocations: 143 kB / 0.9061 GB, free: 58.7 MB / 0.6042 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0001663/0.2524, allocations: 158.9 kB / 0.9062 GB, free: 58.54 MB / 0.6042 GB
Notification: Performance of NFPackage.collectConstants: time 5.107e-05/0.2524, allocations: 12 kB / 0.9062 GB, free: 58.53 MB / 0.6042 GB
Notification: Performance of NFFlatten.collectFunctions: time 4.001e-05/0.2525, allocations: 12 kB / 0.9063 GB, free: 58.52 MB / 0.6042 GB
Notification: Performance of NFScalarize.scalarize: time 5.566e-05/0.2525, allocations: 67.58 kB / 0.9063 GB, free: 58.45 MB / 0.6042 GB
Notification: Performance of NFVerifyModel.verify: time 0.0001485/0.2527, allocations: 220.2 kB / 0.9065 GB, free: 58.23 MB / 0.6042 GB
Notification: Performance of NFConvertDAE.convert: time 0.000458/0.2531, allocations: 0.7014 MB / 0.9072 GB, free: 57.52 MB / 0.6042 GB
Notification: Performance of FrontEnd - DAE generated: time 4.739e-06/0.2532, allocations: 0 / 0.9072 GB, free: 57.52 MB / 0.6042 GB
Notification: Performance of FrontEnd: time 1.643e-06/0.2532, allocations: 0 / 0.9072 GB, free: 57.52 MB / 0.6042 GB
Notification: Performance of Transformations before backend: time 2.314e-05/0.2532, allocations: 0 / 0.9072 GB, free: 57.52 MB / 0.6042 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 116
 * Number of variables: 116
Notification: Performance of Generate backend data structure: time 0.001298/0.2545, allocations: 0.7231 MB / 0.9079 GB, free: 56.75 MB / 0.6042 GB
Notification: Performance of prepare preOptimizeDAE: time 4.382e-05/0.2546, allocations: 8.031 kB / 0.9079 GB, free: 56.75 MB / 0.6042 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001295/0.2547, allocations: 56.28 kB / 0.908 GB, free: 56.69 MB / 0.6042 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005975/0.2553, allocations: 424.7 kB / 0.9084 GB, free: 56.24 MB / 0.6042 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.841e-05/0.2553, allocations: 37.38 kB / 0.9084 GB, free: 56.2 MB / 0.6042 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 6.359e-05/0.2554, allocations: 40.38 kB / 0.9085 GB, free: 56.16 MB / 0.6042 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008244/0.2562, allocations: 486.2 kB / 0.9089 GB, free: 55.67 MB / 0.6042 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.302e-05/0.2563, allocations: 3.938 kB / 0.9089 GB, free: 55.67 MB / 0.6042 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.96e-05/0.2563, allocations: 16 kB / 0.9089 GB, free: 55.65 MB / 0.6042 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.139e-05/0.2563, allocations: 12 kB / 0.909 GB, free: 55.64 MB / 0.6042 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006962/0.257, allocations: 355.8 kB / 0.9093 GB, free: 55.3 MB / 0.6042 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.00201/0.2591, allocations: 1.46 MB / 0.9107 GB, free: 53.77 MB / 0.6042 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.000547/0.2596, allocations: 259 kB / 0.911 GB, free: 53.51 MB / 0.6042 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0002788/0.2599, allocations: 134.8 kB / 0.9111 GB, free: 53.38 MB / 0.6042 GB
Notification: Performance of preOpt evalFunc (simulation): time 2.896e-05/0.26, allocations: 7.984 kB / 0.9111 GB, free: 53.37 MB / 0.6042 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.000346/0.2603, allocations: 186.5 kB / 0.9113 GB, free: 53.17 MB / 0.6042 GB
Notification: Performance of pre-optimization done (n=25): time 2.294e-06/0.2603, allocations: 0 / 0.9113 GB, free: 53.17 MB / 0.6042 GB
Notification: Performance of matching and sorting (n=25): time 0.0007847/0.2611, allocations: 367.1 kB / 0.9116 GB, free: 52.8 MB / 0.6042 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 4.852e-05/0.2612, allocations: 110.8 kB / 0.9117 GB, free: 52.67 MB / 0.6042 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004591/0.2616, allocations: 449.9 kB / 0.9122 GB, free: 52.23 MB / 0.6042 GB
Notification: Performance of collectPreVariables (initialization): time 2.657e-05/0.2617, allocations: 33.7 kB / 0.9122 GB, free: 52.19 MB / 0.6042 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0001502/0.2618, allocations: 263.9 kB / 0.9124 GB, free: 51.92 MB / 0.6042 GB
Notification: Performance of collectInitialBindings (initialization): time 5.383e-05/0.2619, allocations: 82.83 kB / 0.9125 GB, free: 51.84 MB / 0.6042 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 1.562e-05/0.2619, allocations: 8 kB / 0.9125 GB, free: 51.83 MB / 0.6042 GB
Notification: Performance of setup shared object (initialization): time 9.449e-05/0.262, allocations: 350.8 kB / 0.9129 GB, free: 51.48 MB / 0.6042 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002374/0.2623, allocations: 103.9 kB / 0.913 GB, free: 51.38 MB / 0.6042 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002651/0.2625, allocations: 193.1 kB / 0.9132 GB, free: 51.16 MB / 0.6042 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0004765/0.263, allocations: 279.2 kB / 0.9134 GB, free: 50.86 MB / 0.6042 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.246e-06/0.263, allocations: 0 / 0.9134 GB, free: 50.86 MB / 0.6042 GB
Notification: Performance of matching and sorting (n=38) (initialization): time 0.0006583/0.2637, allocations: 361 kB / 0.9138 GB, free: 50.5 MB / 0.6042 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0001146/0.2638, allocations: 143 kB / 0.9139 GB, free: 50.33 MB / 0.6042 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.706e-06/0.2638, allocations: 3.938 kB / 0.9139 GB, free: 50.33 MB / 0.6042 GB
Notification: Performance of postOpt tearingSystem (initialization): time 2.839e-05/0.2639, allocations: 4 kB / 0.9139 GB, free: 50.32 MB / 0.6042 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002715/0.2642, allocations: 67.89 kB / 0.914 GB, free: 50.26 MB / 0.6042 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.277e-05/0.2642, allocations: 0 / 0.914 GB, free: 50.26 MB / 0.6042 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000275/0.2645, allocations: 59.52 kB / 0.914 GB, free: 50.2 MB / 0.6042 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.381e-05/0.2645, allocations: 8 kB / 0.914 GB, free: 50.19 MB / 0.6042 GB
Notification: Performance of prepare postOptimizeDAE: time 1.019e-05/0.2645, allocations: 7.938 kB / 0.914 GB, free: 50.18 MB / 0.6042 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0004943/0.265, allocations: 280 kB / 0.9143 GB, free: 49.91 MB / 0.6042 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.871e-06/0.265, allocations: 0 / 0.9143 GB, free: 49.91 MB / 0.6042 GB
Notification: Performance of postOpt tearingSystem (initialization): time 5.971e-06/0.265, allocations: 4 kB / 0.9143 GB, free: 49.91 MB / 0.6042 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002249/0.2653, allocations: 67.84 kB / 0.9144 GB, free: 49.84 MB / 0.6042 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.021e-06/0.2653, allocations: 4 kB / 0.9144 GB, free: 49.84 MB / 0.6042 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002231/0.2655, allocations: 43.58 kB / 0.9144 GB, free: 49.79 MB / 0.6042 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.947e-05/0.2656, allocations: 16 kB / 0.9144 GB, free: 49.78 MB / 0.6042 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 8
 * Number of states: 0 ()
 * Number of discrete variables: 8 ($whenCondition1,damLim.conInt1.y,damLim.conInt.y,damLim.not1.y,damLim.and2.y,damLim.intEqu.y,damLim.intLesEqu.y,damLim.damLimCon.cheYMinMax.y)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (38):
 * Single equations (assignments): 38
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.0002258/0.2658, allocations: 261 kB / 0.9147 GB, free: 49.51 MB / 0.6042 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 5.077e-05/0.2658, allocations: 43.44 kB / 0.9147 GB, free: 49.47 MB / 0.6042 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0006185/0.2665, allocations: 304.8 kB / 0.915 GB, free: 49.17 MB / 0.6042 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.012e-06/0.2665, allocations: 7.938 kB / 0.915 GB, free: 49.16 MB / 0.6042 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 6.252e-06/0.2665, allocations: 0 / 0.915 GB, free: 49.16 MB / 0.6042 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.741e-06/0.2665, allocations: 7.875 kB / 0.915 GB, free: 49.15 MB / 0.6042 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001108/0.2676, allocations: 0.889 MB / 0.9159 GB, free: 48.19 MB / 0.6042 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.905e-06/0.2676, allocations: 4.031 kB / 0.9159 GB, free: 48.18 MB / 0.6042 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002381/0.2679, allocations: 47.97 kB / 0.916 GB, free: 48.14 MB / 0.6042 GB
Notification: Performance of postOpt tearingSystem (simulation): time 5.06e-06/0.2679, allocations: 4 kB / 0.916 GB, free: 48.13 MB / 0.6042 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.213e-05/0.2679, allocations: 8 kB / 0.916 GB, free: 48.12 MB / 0.6042 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.949e-06/0.2679, allocations: 7.938 kB / 0.916 GB, free: 48.12 MB / 0.6042 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.004e-06/0.2679, allocations: 0 / 0.916 GB, free: 48.12 MB / 0.6042 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0008672/0.2688, allocations: 0.562 MB / 0.9165 GB, free: 47.52 MB / 0.6042 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0001442/0.269, allocations: 148.5 kB / 0.9167 GB, free: 47.36 MB / 0.6042 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.171e-05/0.269, allocations: 11.98 kB / 0.9167 GB, free: 47.34 MB / 0.6042 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002223/0.2693, allocations: 24.05 kB / 0.9167 GB, free: 47.32 MB / 0.6042 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 6.466e-05/0.2693, allocations: 15.98 kB / 0.9167 GB, free: 47.3 MB / 0.6042 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.161e-05/0.2694, allocations: 15.92 kB / 0.9167 GB, free: 47.29 MB / 0.6042 GB
Notification: Performance of sorting global known variables: time 0.0003198/0.2697, allocations: 315.1 kB / 0.917 GB, free: 46.98 MB / 0.6042 GB
Notification: Performance of sort global known variables: time 1.4e-07/0.2697, allocations: 0 / 0.917 GB, free: 46.98 MB / 0.6042 GB
Notification: Performance of remove unused functions: time 0.0004828/0.2702, allocations: 143.5 kB / 0.9172 GB, free: 46.84 MB / 0.6042 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 8
 * Number of states: 1 (damLim.damLimCon.I.y)
 * Number of discrete variables: 2 ($whenCondition1,damLim.not1.y)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (27):
 * Single equations (assignments): 27
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of Backend phase and start with SimCode phase: time 0.0001237/0.2703, allocations: 127.2 kB / 0.9173 GB, free: 46.71 MB / 0.6042 GB
Notification: Performance of simCode: created initialization part: time 0.0008073/0.2711, allocations: 420.5 kB / 0.9177 GB, free: 46.3 MB / 0.6042 GB
Notification: Performance of simCode: created event and clocks part: time 4.227e-06/0.2711, allocations: 0 / 0.9177 GB, free: 46.3 MB / 0.6042 GB
Notification: Performance of simCode: created simulation system equations: time 0.0002439/0.2714, allocations: 124.6 kB / 0.9178 GB, free: 46.18 MB / 0.6042 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0008664/0.2723, allocations: 129.9 kB / 0.9179 GB, free: 46.05 MB / 0.6042 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001383/0.2737, allocations: 0.9506 MB / 0.9189 GB, free: 45.05 MB / 0.6042 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000259/0.2739, allocations: 0.8272 MB / 0.9197 GB, free: 44.19 MB / 0.6042 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001159/0.2741, allocations: 39.44 kB / 0.9197 GB, free: 44.15 MB / 0.6042 GB
Notification: Performance of SimCode: time 4.21e-07/0.2741, allocations: 0 / 0.9197 GB, free: 44.15 MB / 0.6042 GB
Notification: Performance of Templates: time 0.007855/0.2819, allocations: 5.246 MB / 0.9248 GB, free: 38.94 MB / 0.6042 GB
make -j1 -f Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow.makefile
(rm -f Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow.sim & ./Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.Economizers.Subsequences.Validation.Limits_VOut_flow.pipe 2>&1)