Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox.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.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox") translateModel(Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001052/0.001052, allocations: 103.4 kB / 15.33 MB, free: 0.5078 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001062/0.001062, allocations: 190.2 kB / 16.25 MB, free: 6.617 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.305/1.305, allocations: 205.1 MB / 222.1 MB, free: 4.699 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 1.632/1.632, allocations: 292.2 MB / 0.5485 GB, free: 13.62 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 0.001348/0.001348, allocations: 67.42 kB / 0.671 GB, free: 26.22 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2204/0.2218, allocations: 114.5 MB / 0.7828 GB, free: 13.93 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox): time 0.005043/0.2269, allocations: 3.932 MB / 0.7867 GB, free: 9.969 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.001976/0.2288, allocations: 1.268 MB / 0.7879 GB, free: 8.691 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000276/0.2291, allocations: 15.94 kB / 0.7879 GB, free: 8.676 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.0003231/0.2295, allocations: 95.16 kB / 0.788 GB, free: 8.582 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 0.0002698/0.2298, allocations: 91.3 kB / 0.7881 GB, free: 8.492 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.0005171/0.2303, allocations: 311.8 kB / 0.7884 GB, free: 8.188 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.001073/0.2314, allocations: 1.041 MB / 0.7894 GB, free: 7.145 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007985/0.2322, allocations: 0.5388 MB / 0.79 GB, free: 6.578 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0003504/0.2325, allocations: 382.5 kB / 0.7903 GB, free: 6.203 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0003276/0.2329, allocations: 421.9 kB / 0.7907 GB, free: 5.789 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 0.0001351/0.233, allocations: 124 kB / 0.7908 GB, free: 5.668 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0001113/0.2331, allocations: 124 kB / 0.791 GB, free: 5.547 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.0001617/0.2333, allocations: 231.3 kB / 0.7912 GB, free: 5.32 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0003125/0.2336, allocations: 461.6 kB / 0.7916 GB, free: 4.867 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.001238/0.2349, allocations: 1.305 MB / 0.7929 GB, free: 3.559 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 3.807e-06/0.2349, allocations: 0 / 0.7929 GB, free: 3.559 MB / 0.6075 GB Notification: Performance of FrontEnd: time 2.374e-06/0.2349, allocations: 0 / 0.7929 GB, free: 3.559 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 1.216e-05/0.2349, allocations: 0 / 0.7929 GB, free: 3.559 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: 179 * Number of variables: 179 Notification: Performance of Generate backend data structure: time 0.002421/0.2373, allocations: 1.27 MB / 0.7941 GB, free: 2.223 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 4.284e-05/0.2374, allocations: 12.03 kB / 0.7941 GB, free: 2.211 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001466/0.2375, allocations: 99.72 kB / 0.7942 GB, free: 2.113 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0007279/0.2383, allocations: 0.5795 MB / 0.7948 GB, free: 1.492 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.6e-05/0.2383, allocations: 54.38 kB / 0.7949 GB, free: 1.438 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001016/0.2384, allocations: 80.36 kB / 0.7949 GB, free: 1.359 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001678/0.2401, allocations: 0.8113 MB / 0.7957 GB, free: 0.5312 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.732e-05/0.2401, allocations: 4 kB / 0.7957 GB, free: 0.5273 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.651e-05/0.2402, allocations: 28 kB / 0.7958 GB, free: 0.5 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.615e-05/0.2402, allocations: 20 kB / 0.7958 GB, free: 492 kB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001696/0.242, allocations: 0.683 MB / 0.7964 GB, free: 15.8 MB / 0.6231 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.00336/0.2454, allocations: 2.501 MB / 0.7989 GB, free: 13.21 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001697/0.2471, allocations: 0.6955 MB / 0.7996 GB, free: 12.5 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007833/0.2479, allocations: 357.7 kB / 0.7999 GB, free: 12.15 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 4.245e-05/0.2479, allocations: 5.453 kB / 0.7999 GB, free: 12.15 MB / 0.6231 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0009625/0.2489, allocations: 377.1 kB / 0.8003 GB, free: 11.77 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=51): time 1.974e-06/0.2489, allocations: 0 / 0.8003 GB, free: 11.77 MB / 0.6231 GB Notification: Performance of matching and sorting (n=51): time 0.002315/0.2512, allocations: 0.8573 MB / 0.8011 GB, free: 10.9 MB / 0.6231 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001122/0.2514, allocations: 137 kB / 0.8012 GB, free: 10.74 MB / 0.6231 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007258/0.2521, allocations: 0.6134 MB / 0.8018 GB, free: 10.11 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 5.573e-05/0.2522, allocations: 45.69 kB / 0.8019 GB, free: 10.06 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002507/0.2524, allocations: 376.2 kB / 0.8022 GB, free: 9.691 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001272/0.2525, allocations: 169.5 kB / 0.8024 GB, free: 9.523 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001744/0.2527, allocations: 114.1 kB / 0.8025 GB, free: 9.406 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.0001533/0.2529, allocations: 382.7 kB / 0.8029 GB, free: 9.023 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007287/0.2536, allocations: 279 kB / 0.8031 GB, free: 8.75 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008124/0.2544, allocations: 417.1 kB / 0.8035 GB, free: 8.285 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001521/0.256, allocations: 0.6585 MB / 0.8042 GB, free: 7.586 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.895e-06/0.256, allocations: 0 / 0.8042 GB, free: 7.586 MB / 0.6231 GB Notification: Performance of matching and sorting (n=71) (initialization): time 0.001826/0.2578, allocations: 0.8175 MB / 0.805 GB, free: 6.75 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 4.603e-05/0.2579, allocations: 63.69 kB / 0.805 GB, free: 6.676 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.855e-06/0.2579, allocations: 4 kB / 0.805 GB, free: 6.672 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.653e-05/0.2579, allocations: 4 kB / 0.8051 GB, free: 6.668 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006137/0.2585, allocations: 143.8 kB / 0.8052 GB, free: 6.527 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.172e-05/0.2586, allocations: 7.984 kB / 0.8052 GB, free: 6.52 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005545/0.2591, allocations: 119.3 kB / 0.8053 GB, free: 6.402 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.817e-05/0.2592, allocations: 20 kB / 0.8053 GB, free: 6.383 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0007587/0.2599, allocations: 397.8 kB / 0.8057 GB, free: 5.992 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0006283/0.2606, allocations: 365.1 kB / 0.8061 GB, free: 5.586 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001102/0.2617, allocations: 0.5765 MB / 0.8066 GB, free: 4.965 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.934e-06/0.2617, allocations: 4 kB / 0.8066 GB, free: 4.961 MB / 0.6231 GB Notification: Performance of matching and sorting (n=71) (initialization_lambda0): time 0.001357/0.2631, allocations: 0.7125 MB / 0.8073 GB, free: 4.23 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 3.89e-05/0.2631, allocations: 67.39 kB / 0.8074 GB, free: 4.152 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.155e-06/0.2631, allocations: 0 / 0.8074 GB, free: 4.152 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.54e-06/0.2631, allocations: 4 kB / 0.8074 GB, free: 4.148 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005541/0.2637, allocations: 123.8 kB / 0.8075 GB, free: 4.027 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.943e-06/0.2637, allocations: 11.94 kB / 0.8075 GB, free: 4.016 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004681/0.2642, allocations: 103.4 kB / 0.8076 GB, free: 3.914 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.286e-05/0.2642, allocations: 24 kB / 0.8076 GB, free: 3.891 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 10 * Number of states: 0 () * Number of discrete variables: 13 (conMix.conFloRat.con1.y,conMix.conCoo.con1.y,conMix.conHea.con1.y,m_flow.count,$PRE.m_flow.count,m_flow.T_start,$PRE.m_flow.T_start,TRoo.count,$PRE.TRoo.count,TRoo.T_start,$PRE.TRoo.T_start,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (69): * Single equations (assignments): 67 * Array equations: 0 * Algorithm blocks: 2 * 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 0.0001666/0.2644, allocations: 216.1 kB / 0.8078 GB, free: 3.672 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 8.974e-05/0.2645, allocations: 71.09 kB / 0.8079 GB, free: 3.602 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001578/0.2661, allocations: 0.6591 MB / 0.8086 GB, free: 2.93 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.731e-06/0.2661, allocations: 4 kB / 0.8086 GB, free: 2.926 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.264e-06/0.2661, allocations: 3.984 kB / 0.8086 GB, free: 2.922 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.915e-06/0.2661, allocations: 7.984 kB / 0.8086 GB, free: 2.914 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0007286/0.2669, allocations: 0.7237 MB / 0.8093 GB, free: 2.141 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.084e-06/0.2669, allocations: 0 / 0.8093 GB, free: 2.141 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005626/0.2674, allocations: 123.8 kB / 0.8094 GB, free: 2.02 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.659e-06/0.2675, allocations: 4 kB / 0.8094 GB, free: 2.016 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.315e-05/0.2675, allocations: 4 kB / 0.8094 GB, free: 2.012 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.667e-06/0.2675, allocations: 4 kB / 0.8094 GB, free: 2.008 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.182e-06/0.2675, allocations: 0 / 0.8094 GB, free: 2.008 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002226/0.2697, allocations: 0.995 MB / 0.8104 GB, free: 0.9922 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000121/0.2699, allocations: 144.2 kB / 0.8105 GB, free: 0.832 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.855e-05/0.27, allocations: 15.98 kB / 0.8105 GB, free: 0.8164 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004353/0.2704, allocations: 67.92 kB / 0.8106 GB, free: 0.75 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000117/0.2705, allocations: 40.38 kB / 0.8106 GB, free: 0.7109 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.307e-05/0.2706, allocations: 19.98 kB / 0.8107 GB, free: 0.6914 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0004819/0.2711, allocations: 435.1 kB / 0.8111 GB, free: 280 kB / 0.6231 GB Notification: Performance of sort global known variables: time 1.6e-07/0.2711, allocations: 4 kB / 0.8111 GB, free: 276 kB / 0.6231 GB Notification: Performance of remove unused functions: time 0.0006318/0.2717, allocations: 262.8 kB / 0.8113 GB, free: 12 kB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 3 (conMix.conHea.I.y,conMix.conCoo.I.y,conMix.conFloRat.I.y) * Number of discrete variables: 6 ($whenCondition2,$whenCondition1,TRoo.T_start,TRoo.count,m_flow.T_start,m_flow.count) * Number of discrete states: 2 (m_flow.count,TRoo.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (51): * Single equations (assignments): 47 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 4 * 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 0.0001743/0.2719, allocations: 127.2 kB / 0.8114 GB, free: 15.88 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.002481/0.2744, allocations: 1.171 MB / 0.8126 GB, free: 14.66 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 2.575e-06/0.2744, allocations: 4.062 kB / 0.8126 GB, free: 14.65 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.0007286/0.2751, allocations: 310.2 kB / 0.8129 GB, free: 14.35 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0006246/0.2758, allocations: 132.9 kB / 0.813 GB, free: 14.23 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002157/0.2779, allocations: 1.511 MB / 0.8145 GB, free: 12.68 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005181/0.2785, allocations: 0.9258 MB / 0.8154 GB, free: 11.73 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.0003432/0.2788, allocations: 80.97 kB / 0.8155 GB, free: 11.65 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001856/0.279, allocations: 51.42 kB / 0.8155 GB, free: 11.6 MB / 0.6387 GB Notification: Performance of SimCode: time 2.61e-07/0.279, allocations: 0 / 0.8155 GB, free: 11.6 MB / 0.6387 GB Notification: Performance of Templates: time 0.01259/0.2916, allocations: 7.603 MB / 0.8229 GB, free: 4.055 MB / 0.6387 GB make -j1 -f Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox.makefile (rm -f Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox.pipe ; mkfifo Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox.pipe ; head -c 1048576 < Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox.pipe >> ../files/Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox.sim & ./Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Examples.DualFanDualDuct.Controls.Examples.RoomMixingBox.pipe 2>&1)