Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness.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/Buildings 12.0.0-master/package.mo", uses=false) Using package Buildings with version 12.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-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(Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness") translateModel(Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001534/0.001534, allocations: 115.3 kB / 15.34 MB, free: 0.5156 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001525/0.001525, allocations: 189.9 kB / 16.25 MB, free: 6.629 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.433/1.433, allocations: 222.9 MB / 239.9 MB, free: 4.562 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo): time 2.905/2.905, allocations: 472.6 MB / 0.7448 GB, free: 4.906 MB / 0.5919 GB Notification: Performance of FrontEnd - loaded program: time 0.001258/0.001258, allocations: 67.39 kB / 0.9115 GB, free: 33.51 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3755/0.3767, allocations: 159.9 MB / 1.068 GB, free: 10.79 MB / 0.8262 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness): time 0.08296/0.4597, allocations: 81.23 MB / 1.147 GB, free: 9.281 MB / 0.9044 GB Notification: Performance of NFInst.instExpressions: time 0.02824/0.488, allocations: 17.67 MB / 1.164 GB, free: 7.57 MB / 0.92 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.005639/0.4937, allocations: 91.5 kB / 1.164 GB, free: 7.48 MB / 0.92 GB Notification: Performance of NFTyping.typeComponents: time 0.004051/0.4978, allocations: 0.9832 MB / 1.165 GB, free: 6.492 MB / 0.92 GB Notification: Performance of NFTyping.typeBindings: time 0.008552/0.5064, allocations: 2.532 MB / 1.168 GB, free: 3.949 MB / 0.92 GB Notification: Performance of NFTyping.typeClassSections: time 0.005294/0.5117, allocations: 1.617 MB / 1.169 GB, free: 2.344 MB / 0.92 GB Notification: Performance of NFFlatten.flatten: time 0.008377/0.5201, allocations: 5.346 MB / 1.175 GB, free: 12.98 MB / 0.9356 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004034/0.5242, allocations: 2.471 MB / 1.177 GB, free: 10.46 MB / 0.9356 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005304/0.5295, allocations: 2.083 MB / 1.179 GB, free: 8.375 MB / 0.9356 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002792/0.5323, allocations: 1.645 MB / 1.181 GB, free: 6.723 MB / 0.9356 GB Notification: Performance of NFPackage.collectConstants: time 0.0009267/0.5333, allocations: 292 kB / 1.181 GB, free: 6.438 MB / 0.9356 GB Notification: Performance of NFFlatten.collectFunctions: time 0.005176/0.5385, allocations: 1.981 MB / 1.183 GB, free: 4.453 MB / 0.9356 GB Notification: Performance of NFScalarize.scalarize: time 0.001257/0.5397, allocations: 0.6385 MB / 1.183 GB, free: 3.812 MB / 0.9356 GB Notification: Performance of NFVerifyModel.verify: time 0.002973/0.5427, allocations: 1.369 MB / 1.185 GB, free: 2.438 MB / 0.9356 GB Notification: Performance of NFConvertDAE.convert: time 0.008191/0.5509, allocations: 4.631 MB / 1.189 GB, free: 13.79 MB / 0.9512 GB Notification: Performance of FrontEnd - DAE generated: time 7.754e-06/0.551, allocations: 0 / 1.189 GB, free: 13.79 MB / 0.9512 GB Notification: Performance of FrontEnd: time 2.985e-06/0.551, allocations: 0 / 1.189 GB, free: 13.79 MB / 0.9512 GB Notification: Performance of Transformations before backend: time 0.0001552/0.5511, allocations: 0 / 1.189 GB, free: 13.79 MB / 0.9512 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 425 * Number of variables: 425 Notification: Performance of Generate backend data structure: time 0.006617/0.5578, allocations: 2.899 MB / 1.192 GB, free: 10.81 MB / 0.9512 GB Notification: Performance of prepare preOptimizeDAE: time 4.599e-05/0.5578, allocations: 8.031 kB / 1.192 GB, free: 10.8 MB / 0.9512 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001727/0.5596, allocations: 404.6 kB / 1.193 GB, free: 10.41 MB / 0.9512 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003746/0.5633, allocations: 1.946 MB / 1.194 GB, free: 8.414 MB / 0.9512 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001342/0.5635, allocations: 131.3 kB / 1.195 GB, free: 8.285 MB / 0.9512 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002948/0.5638, allocations: 176 kB / 1.195 GB, free: 8.113 MB / 0.9512 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003742/0.5676, allocations: 1.811 MB / 1.197 GB, free: 6.238 MB / 0.9512 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.87e-05/0.5676, allocations: 0 / 1.197 GB, free: 6.238 MB / 0.9512 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001445/0.5678, allocations: 68 kB / 1.197 GB, free: 6.172 MB / 0.9512 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.148e-05/0.5678, allocations: 43.98 kB / 1.197 GB, free: 6.129 MB / 0.9512 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002967/0.5708, allocations: 1.367 MB / 1.198 GB, free: 4.758 MB / 0.9512 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 0.01153/0.5823, allocations: 7.588 MB / 1.205 GB, free: 12.78 MB / 0.9669 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002186/0.5846, allocations: 0.8306 MB / 1.206 GB, free: 11.92 MB / 0.9669 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001016/0.5856, allocations: 402.3 kB / 1.207 GB, free: 11.53 MB / 0.9669 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0009594/0.5866, allocations: 1.164 MB / 1.208 GB, free: 10.11 MB / 0.9669 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.738e-05/0.5866, allocations: 35.12 kB / 1.208 GB, free: 10.06 MB / 0.9669 GB Notification: Performance of pre-optimization done (n=62): time 2.685e-06/0.5867, allocations: 4 kB / 1.208 GB, free: 10.05 MB / 0.9669 GB Notification: Performance of matching and sorting (n=62): time 0.008869/0.5955, allocations: 1.829 MB / 1.21 GB, free: 8.195 MB / 0.9669 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.902e-05/0.5957, allocations: 111.4 kB / 1.21 GB, free: 8.062 MB / 0.9669 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00295/0.5986, allocations: 1.698 MB / 1.211 GB, free: 6.32 MB / 0.9669 GB Notification: Performance of collectPreVariables (initialization): time 0.0002248/0.5989, allocations: 45.7 kB / 1.211 GB, free: 6.27 MB / 0.9669 GB Notification: Performance of collectInitialEqns (initialization): time 0.001072/0.5999, allocations: 1.006 MB / 1.212 GB, free: 5.254 MB / 0.9669 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003021/0.6003, allocations: 220.8 kB / 1.213 GB, free: 5.035 MB / 0.9669 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003516/0.6006, allocations: 202.4 kB / 1.213 GB, free: 4.832 MB / 0.9669 GB Notification: Performance of setup shared object (initialization): time 0.0001462/0.6008, allocations: 338 kB / 1.213 GB, free: 4.496 MB / 0.9669 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009995/0.6018, allocations: 364.6 kB / 1.213 GB, free: 4.137 MB / 0.9669 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001238/0.603, allocations: 0.6879 MB / 1.214 GB, free: 3.309 MB / 0.9669 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001927/0.605, allocations: 0.988 MB / 1.215 GB, free: 2.207 MB / 0.9669 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.653e-06/0.605, allocations: 0 / 1.215 GB, free: 2.207 MB / 0.9669 GB Notification: Performance of matching and sorting (n=112) (initialization): time 0.005895/0.6109, allocations: 1.562 MB / 1.217 GB, free: 0.6328 MB / 0.9669 GB Notification: Performance of prepare postOptimizeDAE: time 2.623e-05/0.6109, allocations: 8 kB / 1.217 GB, free: 0.625 MB / 0.9669 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.757e-05/0.611, allocations: 12 kB / 1.217 GB, free: 0.6133 MB / 0.9669 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000919/0.6119, allocations: 192.8 kB / 1.217 GB, free: 432 kB / 0.9669 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007777/0.6127, allocations: 207.6 kB / 1.217 GB, free: 224 kB / 0.9669 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006053/0.6187, allocations: 2.833 MB / 1.22 GB, free: 13.24 MB / 0.9825 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001739/0.6205, allocations: 210.7 kB / 1.22 GB, free: 13.03 MB / 0.9825 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001265/0.6206, allocations: 44 kB / 1.22 GB, free: 12.99 MB / 0.9825 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00163/0.6223, allocations: 0.7323 MB / 1.221 GB, free: 12.25 MB / 0.9825 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001263/0.6236, allocations: 0.6898 MB / 1.221 GB, free: 11.42 MB / 0.9825 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001914/0.6255, allocations: 0.9762 MB / 1.222 GB, free: 10.33 MB / 0.9825 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.942e-06/0.6255, allocations: 4 kB / 1.222 GB, free: 10.32 MB / 0.9825 GB Notification: Performance of matching and sorting (n=112) (initialization_lambda0): time 0.005579/0.6311, allocations: 1.562 MB / 1.224 GB, free: 8.75 MB / 0.9825 GB Notification: Performance of prepare postOptimizeDAE: time 1.839e-05/0.6311, allocations: 8 kB / 1.224 GB, free: 8.742 MB / 0.9825 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.154e-05/0.6311, allocations: 8.062 kB / 1.224 GB, free: 8.734 MB / 0.9825 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0007726/0.6319, allocations: 188.8 kB / 1.224 GB, free: 8.547 MB / 0.9825 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007571/0.6327, allocations: 203.7 kB / 1.224 GB, free: 8.348 MB / 0.9825 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005972/0.6387, allocations: 2.831 MB / 1.227 GB, free: 5.383 MB / 0.9825 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001769/0.6405, allocations: 188.8 kB / 1.227 GB, free: 5.199 MB / 0.9825 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001029/0.6406, allocations: 40 kB / 1.227 GB, free: 5.16 MB / 0.9825 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 37 * Number of states: 0 () * Number of discrete variables: 9 (chi.eff.swiCoo.u2,chi.eff.swiHea.u2,chi.eff.hea,chi.notCoo.y,chi.conCoo.y,chi.eff.hys.y,$PRE.chi.eff.hys.y,chi.hys.y,$PRE.chi.hys.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (105): * Single equations (assignments): 104 * 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 {(1,7)} Notification: Performance of prepare postOptimizeDAE: time 0.0003399/0.6409, allocations: 263.8 kB / 1.227 GB, free: 4.895 MB / 0.9825 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003549/0.6413, allocations: 173.8 kB / 1.228 GB, free: 4.723 MB / 0.9825 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005223/0.6465, allocations: 1.447 MB / 1.229 GB, free: 3.27 MB / 0.9825 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.975e-05/0.6466, allocations: 16 kB / 1.229 GB, free: 3.254 MB / 0.9825 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.577e-06/0.6466, allocations: 0 / 1.229 GB, free: 3.254 MB / 0.9825 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.004565/0.6511, allocations: 1.207 MB / 1.23 GB, free: 2.012 MB / 0.9825 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.008026/0.6592, allocations: 3.213 MB / 1.233 GB, free: 14.68 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.001e-05/0.6592, allocations: 4 kB / 1.233 GB, free: 14.68 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006068/0.6598, allocations: 123.8 kB / 1.233 GB, free: 14.55 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0007339/0.6606, allocations: 184.8 kB / 1.234 GB, free: 14.37 MB / 0.9981 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001345/0.6607, allocations: 19.98 kB / 1.234 GB, free: 14.35 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005602/0.6663, allocations: 2.84 MB / 1.236 GB, free: 11.37 MB / 0.9981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.824e-06/0.6664, allocations: 11.92 kB / 1.236 GB, free: 11.36 MB / 0.9981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00632/0.6727, allocations: 1.95 MB / 1.238 GB, free: 9.344 MB / 0.9981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0009008/0.6736, allocations: 362.6 kB / 1.239 GB, free: 8.969 MB / 0.9981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002664/0.6739, allocations: 19.98 kB / 1.239 GB, free: 8.949 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001054/0.675, allocations: 115.9 kB / 1.239 GB, free: 8.836 MB / 0.9981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001683/0.6751, allocations: 68.28 kB / 1.239 GB, free: 8.77 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.024e-05/0.6752, allocations: 35.92 kB / 1.239 GB, free: 8.734 MB / 0.9981 GB Notification: Performance of sorting global known variables: time 0.001738/0.677, allocations: 1.177 MB / 1.24 GB, free: 7.535 MB / 0.9981 GB Notification: Performance of sort global known variables: time 3e-07/0.677, allocations: 4 kB / 1.24 GB, free: 7.531 MB / 0.9981 GB Notification: Performance of remove unused functions: time 0.002669/0.6797, allocations: 1.001 MB / 1.241 GB, free: 6.527 MB / 0.9981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 2 (chi.con.vol.dynBal.U,chi.eva.vol.dynBal.U) * Number of discrete variables: 2 (chi.hys.y,chi.eff.hys.y) * Number of discrete states: 2 (chi.hys.y,chi.eff.hys.y) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (59): * Single equations (assignments): 52 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 6 * 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 {(1,7)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001118/0.6808, allocations: 0.5138 MB / 1.242 GB, free: 6.02 MB / 0.9981 GB Notification: Performance of simCode: created initialization part: time 0.004008/0.6848, allocations: 1.741 MB / 1.243 GB, free: 4.254 MB / 0.9981 GB Notification: Performance of simCode: created event and clocks part: time 6.121e-06/0.6848, allocations: 1.188 kB / 1.243 GB, free: 4.254 MB / 0.9981 GB Notification: Performance of simCode: created simulation system equations: time 0.001178/0.686, allocations: 0.5798 MB / 1.244 GB, free: 3.66 MB / 0.9981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004007/0.69, allocations: 0.9086 MB / 1.245 GB, free: 2.773 MB / 0.9981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.5709/1.261, allocations: 4.063 MB / 1.249 GB, free: 171.7 MB / 0.9981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001373/1.262, allocations: 1.425 MB / 1.25 GB, free: 171 MB / 0.9981 GB Notification: Performance of simCode: alias equations: time 0.002195/1.265, allocations: 382.9 kB / 1.25 GB, free: 171 MB / 0.9981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003657/1.265, allocations: 131.9 kB / 1.251 GB, free: 170.9 MB / 0.9981 GB Notification: Performance of SimCode: time 8.72e-07/1.265, allocations: 0 / 1.251 GB, free: 170.9 MB / 0.9981 GB Notification: Performance of Templates: time 0.07475/1.34, allocations: 40.07 MB / 1.29 GB, free: 158 MB / 0.9981 GB make -j1 -f Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness.makefile (rm -f Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness.pipe ; mkfifo Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness.pipe ; head -c 1048576 < Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness.pipe >> ../files/Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness.sim & ./Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_3.0.0_Buildings.Fluid.Chillers.ModularReversible.Validation.ConstantCarnotEffectiveness.pipe 2>&1)