Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo", uses=false) 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/Modelica 3.2.3+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/OpenIPSL 2.0.0/package.mo", uses=false) Using package OpenIPSL with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/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 Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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) Using package Modelica_Synchronous with version 0.93.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo) Running command: translateModel(OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII") translateModel(OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo): time 0.08245/0.08245, allocations: 12.2 MB / 28.08 MB, free: 1.344 MB / 19.63 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001165/0.001165, allocations: 121.2 kB / 31.59 MB, free: 4.574 MB / 26.18 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.451/1.451, allocations: 205.1 MB / 240.1 MB, free: 10.85 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001317/0.001317, allocations: 194.9 kB / 290.2 MB, free: 13.81 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/package.mo): time 0.4423/0.4423, allocations: 78.5 MB / 418.8 MB, free: 11.88 MB / 302.1 MB Notification: Modelica_Synchronous 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: 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: OpenIPSL 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: Performance of FrontEnd - loaded program: time 0.002688/0.002688, allocations: 131.8 kB / 499.1 MB, free: 11.75 MB / 382.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.331/0.3337, allocations: 68.03 MB / 0.5538 GB, free: 22.2 MB / 382.1 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII): time 0.01119/0.345, allocations: 14.66 MB / 0.5681 GB, free: 7.477 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.007869/0.3529, allocations: 3.617 MB / 0.5717 GB, free: 3.848 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.003829/0.3567, allocations: 28 kB / 0.5717 GB, free: 3.82 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.002404/0.3592, allocations: 445.1 kB / 0.5721 GB, free: 3.383 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.006316/0.3656, allocations: 1.248 MB / 0.5733 GB, free: 2.137 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003895/0.3695, allocations: 1.407 MB / 0.5747 GB, free: 0.7578 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.006745/0.3762, allocations: 3.792 MB / 0.5784 GB, free: 12.95 MB / 398.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001982/0.3783, allocations: 0.8896 MB / 0.5793 GB, free: 12.01 MB / 398.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.003167/0.3815, allocations: 1.575 MB / 0.5808 GB, free: 10.43 MB / 398.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.00339/0.3849, allocations: 2.011 MB / 0.5828 GB, free: 8.406 MB / 398.1 MB Notification: Performance of NFPackage.collectConstants: time 0.001389/0.3863, allocations: 292 kB / 0.5831 GB, free: 8.121 MB / 398.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.001749/0.3881, allocations: 443.9 kB / 0.5835 GB, free: 7.688 MB / 398.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0009027/0.389, allocations: 0.7818 MB / 0.5842 GB, free: 6.902 MB / 398.1 MB Notification: Performance of NFVerifyModel.verify: time 0.002513/0.3915, allocations: 1.674 MB / 0.5859 GB, free: 5.219 MB / 398.1 MB Notification: Performance of NFConvertDAE.convert: time 0.004519/0.3961, allocations: 3.137 MB / 0.5889 GB, free: 2.074 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.861e-06/0.3961, allocations: 0 / 0.5889 GB, free: 2.074 MB / 398.1 MB Notification: Performance of FrontEnd: time 2.034e-06/0.3961, allocations: 0 / 0.5889 GB, free: 2.074 MB / 398.1 MB Notification: Performance of Transformations before backend: time 0.000154/0.3963, allocations: 0 / 0.5889 GB, free: 2.074 MB / 398.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 525 * Number of variables: 525 Notification: Performance of Generate backend data structure: time 0.02449/0.4208, allocations: 6.676 MB / 0.5955 GB, free: 11.3 MB / 414.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.459e-05/0.4208, allocations: 11.98 kB / 0.5955 GB, free: 11.29 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01497/0.4358, allocations: 2.282 MB / 0.5977 GB, free: 9 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004774/0.4406, allocations: 1.91 MB / 0.5996 GB, free: 7.023 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000853/0.4415, allocations: 0.7252 MB / 0.6003 GB, free: 6.184 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0009134/0.4424, allocations: 219.9 kB / 0.6005 GB, free: 5.969 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.007348/0.4498, allocations: 3.059 MB / 0.6035 GB, free: 2.832 MB / 414.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 4.166e-05/0.4499, allocations: 3.938 kB / 0.6035 GB, free: 2.828 MB / 414.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002652/0.4502, allocations: 87.94 kB / 0.6036 GB, free: 2.742 MB / 414.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.928e-05/0.4502, allocations: 48 kB / 0.6036 GB, free: 2.695 MB / 414.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.006171/0.4564, allocations: 2.796 MB / 0.6063 GB, free: 15.88 MB / 430.1 MB 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 0.02043/0.4768, allocations: 9.966 MB / 0.6161 GB, free: 5.496 MB / 430.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01108/0.488, allocations: 4.22 MB / 0.6202 GB, free: 1.141 MB / 430.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.004624/0.4926, allocations: 1.983 MB / 0.6221 GB, free: 15.14 MB / 446.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.000473/0.4931, allocations: 41.83 kB / 0.6222 GB, free: 15.11 MB / 446.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.005648/0.4988, allocations: 2.259 MB / 0.6244 GB, free: 12.83 MB / 446.1 MB Notification: Performance of pre-optimization done (n=250): time 6.382e-06/0.4988, allocations: 0 / 0.6244 GB, free: 12.83 MB / 446.1 MB Notification: Performance of matching and sorting (n=250): time 0.1222/0.621, allocations: 28.82 MB / 0.6525 GB, free: 15.88 MB / 478.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001392/0.6212, allocations: 180.2 kB / 0.6527 GB, free: 15.67 MB / 478.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004661/0.6259, allocations: 2.337 MB / 0.655 GB, free: 13.31 MB / 478.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0007885/0.6267, allocations: 69.7 kB / 0.655 GB, free: 13.24 MB / 478.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.001216/0.628, allocations: 1.18 MB / 0.6562 GB, free: 12.05 MB / 478.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.00156/0.6295, allocations: 0.878 MB / 0.657 GB, free: 11.16 MB / 478.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.00258/0.6321, allocations: 0.566 MB / 0.6576 GB, free: 10.59 MB / 478.1 MB Notification: Performance of setup shared object (initialization): time 0.0001075/0.6323, allocations: 309.1 kB / 0.6579 GB, free: 10.28 MB / 478.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004717/0.637, allocations: 1.986 MB / 0.6598 GB, free: 8.293 MB / 478.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004911/0.6419, allocations: 2.358 MB / 0.6621 GB, free: 5.844 MB / 478.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.05751/0.6994, allocations: 14.43 MB / 0.6762 GB, free: 7.18 MB / 494.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.542e-05/0.6995, allocations: 7.938 kB / 0.6762 GB, free: 7.172 MB / 494.1 MB Notification: Performance of matching and sorting (n=425) (initialization): time 0.3171/1.017, allocations: 12.6 MB / 0.6885 GB, free: 109 MB / 494.1 MB Notification: Performance of prepare postOptimizeDAE: time 8.8e-05/1.017, allocations: 115.5 kB / 0.6886 GB, free: 108.9 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.023e-05/1.017, allocations: 9.734 kB / 0.6887 GB, free: 108.9 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.01904/1.036, allocations: 5.441 MB / 0.694 GB, free: 108.8 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003032/1.039, allocations: 0.5807 MB / 0.6945 GB, free: 108.7 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.05277/1.092, allocations: 23.67 MB / 0.7177 GB, free: 96.54 MB / 494.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004735/1.097, allocations: 493.8 kB / 0.7181 GB, free: 96.18 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004639/1.097, allocations: 124 kB / 0.7182 GB, free: 96.06 MB / 494.1 MB Warning: Assuming fixed start value for the following 6 variables: order3_2.delta:VARIABLE(flow=false start = order3_2.delta0 unit = "rad" fixed = true ) "Rotor angle" type: Real order3_2.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real order3_2.e1q:VARIABLE(start = order3_2.e1q0 unit = "1" fixed = true ) "q-axis transient voltage" type: Real order2.delta:VARIABLE(flow=false start = order2.delta0 unit = "rad" fixed = true ) "Rotor angle" type: Real order2.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real Syn2.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 29 * Number of states: 0 () * Number of discrete variables: 4 ($whenCondition2,$whenCondition1,$whenCondition4,$whenCondition3) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (336): * Single equations (assignments): 331 * Array equations: 0 * Algorithm blocks: 4 * 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 {(63,27)} Notification: Performance of prepare postOptimizeDAE: time 0.001169/1.098, allocations: 0.5349 MB / 0.7188 GB, free: 95.52 MB / 494.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006122/1.099, allocations: 303.2 kB / 0.7191 GB, free: 95.26 MB / 494.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.03522/1.134, allocations: 11.95 MB / 0.7307 GB, free: 83.21 MB / 494.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.666e-05/1.134, allocations: 24 kB / 0.7307 GB, free: 83.19 MB / 494.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.334e-05/1.134, allocations: 16 kB / 0.7308 GB, free: 83.18 MB / 494.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.283e-05/1.134, allocations: 15.95 kB / 0.7308 GB, free: 83.16 MB / 494.1 MB 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 postOpt removeSimpleEquations (simulation): time 0.03859/1.173, allocations: 15.59 MB / 0.746 GB, free: 67.46 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.063e-05/1.173, allocations: 0 / 0.746 GB, free: 67.46 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001564/1.174, allocations: 251.6 kB / 0.7462 GB, free: 67.21 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.01529/1.19, allocations: 5.286 MB / 0.7514 GB, free: 61.92 MB / 494.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005362/1.19, allocations: 51.98 kB / 0.7515 GB, free: 61.87 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.05025/1.241, allocations: 24.96 MB / 0.7758 GB, free: 36.5 MB / 494.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.166e-06/1.241, allocations: 0 / 0.7758 GB, free: 36.5 MB / 494.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03986/1.28, allocations: 14.34 MB / 0.7898 GB, free: 22.04 MB / 494.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.001337/1.282, allocations: 415.1 kB / 0.7902 GB, free: 21.62 MB / 494.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007251/1.283, allocations: 51.94 kB / 0.7903 GB, free: 21.57 MB / 494.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003036/1.286, allocations: 303.6 kB / 0.7906 GB, free: 21.28 MB / 494.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.002341/1.288, allocations: 0.5724 MB / 0.7911 GB, free: 20.7 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002069/1.288, allocations: 71.92 kB / 0.7912 GB, free: 20.63 MB / 494.1 MB Notification: Performance of sorting global known variables: time 0.001992/1.29, allocations: 1.543 MB / 0.7927 GB, free: 19.09 MB / 494.1 MB Notification: Performance of sort global known variables: time 1.9e-07/1.29, allocations: 0 / 0.7927 GB, free: 19.09 MB / 494.1 MB Notification: Performance of remove unused functions: time 0.003877/1.294, allocations: 1.196 MB / 0.7939 GB, free: 17.89 MB / 494.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 19 (order3_2.delta,order3_2.w,order3_2.e1q,order2.delta,order2.w,Syn2.delta,Syn2.w,Syn2.e1q,Syn2.e1d,Syn2.e2q,Syn2.e2d,Exc1.ExcitationSystem.x_scaled[1],Exc1.derivativeBlock.x,Exc1.firstOrder2.y,Exc1.simpleLagLim.state,Exc2.ExcitationSystem.x_scaled[1],Exc2.derivativeBlock.x,Exc2.firstOrder2.y,Exc2.simpleLagLim.state) * Number of discrete variables: 4 ($whenCondition3,$whenCondition4,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (159): * Single equations (assignments): 154 * Array equations: 0 * Algorithm blocks: 2 * 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): 1 system {(66,22,7.7%)} * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(1,6), (1,6)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0004544/1.295, allocations: 178.5 kB / 0.794 GB, free: 17.71 MB / 494.1 MB Notification: Performance of simCode: created initialization part: time 0.01845/1.313, allocations: 6.895 MB / 0.8008 GB, free: 10.75 MB / 494.1 MB Notification: Performance of simCode: created event and clocks part: time 6.452e-06/1.313, allocations: 13.62 kB / 0.8008 GB, free: 10.73 MB / 494.1 MB Notification: Performance of simCode: created simulation system equations: time 0.01211/1.325, allocations: 4.41 MB / 0.8051 GB, free: 6.254 MB / 494.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002569/1.328, allocations: 259.3 kB / 0.8053 GB, free: 6 MB / 494.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009562/1.337, allocations: 6.706 MB / 0.8119 GB, free: 15.28 MB / 0.4981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001355/1.339, allocations: 1.819 MB / 0.8137 GB, free: 13.43 MB / 0.4981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009474/1.34, allocations: 179.4 kB / 0.8138 GB, free: 13.25 MB / 0.4981 GB Notification: Performance of SimCode: time 5.41e-07/1.34, allocations: 0 / 0.8138 GB, free: 13.25 MB / 0.4981 GB Notification: Performance of Templates: time 0.07941/1.419, allocations: 64.61 MB / 0.8769 GB, free: 12.59 MB / 0.5606 GB make -j1 -f OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII.makefile (rm -f OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII.pipe ; mkfifo OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII.pipe ; head -c 1048576 < OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII.pipe >> ../files/OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII.sim & ./OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_2.0.0_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRII.pipe 2>&1)