Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Chemical_Chemical.Examples.WaterElectrolysis.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/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/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) 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 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 Chemical with version 1.4.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo) Running command: translateModel(Chemical.Examples.WaterElectrolysis,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Chemical_Chemical.Examples.WaterElectrolysis") translateModel(Chemical.Examples.WaterElectrolysis,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Chemical_Chemical.Examples.WaterElectrolysis") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo): time 0.1085/0.1085, allocations: 15.26 MB / 22.73 MB, free: 0.9531 MB / 18.57 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001312/0.001312, allocations: 185 kB / 27.52 MB, free: 6.113 MB / 24.77 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.489/1.489, allocations: 221.5 MB / 253.7 MB, free: 11 MB / 202.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009671/0.000967, allocations: 93.69 kB / 308.8 MB, free: 10.93 MB / 250.7 MB Notification: Performance of FrontEnd - loaded program: time 1.542e-05/1.544e-05, allocations: 4.078 kB / 369.6 MB, free: 53.93 MB / 298.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1071/0.1071, allocations: 54.64 MB / 424.2 MB, free: 14.28 MB / 298.7 MB Notification: Performance of FrontEnd - scodeFlatten: time 0.4348/0.5419, allocations: 104.4 MB / 0.5162 GB, free: 12.45 MB / 362.7 MB Notification: Performance of FrontEnd - mkProgramGraph: time 0.000175/0.5422, allocations: 69.88 kB / 0.5163 GB, free: 12.45 MB / 362.7 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo:3011:6-3011:65:writable] Warning: No corresponding 'inner' declaration found for component .Modelica.Fluid.System O2_gas.system declared as 'outer '. The existing 'inner' components are: There are no 'inner' components defined in the model in any of the parent scopes of 'outer' component's scope: Chemical.Components.Substance$O2_gas. Check if you have not misspelled the 'outer' component name. Please declare an 'inner' component with the same name in the top scope. Continuing flattening by only considering the 'outer' component declaration. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo:3011:6-3011:65:writable] Warning: No corresponding 'inner' declaration found for component .Modelica.Fluid.System H2_gas.system declared as 'outer '. The existing 'inner' components are: There are no 'inner' components defined in the model in any of the parent scopes of 'outer' component's scope: Chemical.Components.Substance$H2_gas. Check if you have not misspelled the 'outer' component name. Please declare an 'inner' component with the same name in the top scope. Continuing flattening by only considering the 'outer' component declaration. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo:4721:7-4721:66:writable] Warning: No corresponding 'inner' declaration found for component .Modelica.Fluid.System anode.system declared as 'outer '. The existing 'inner' components are: There are no 'inner' components defined in the model in any of the parent scopes of 'outer' component's scope: Chemical.Components.Solution$anode. Check if you have not misspelled the 'outer' component name. Please declare an 'inner' component with the same name in the top scope. Continuing flattening by only considering the 'outer' component declaration. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo:4721:7-4721:66:writable] Warning: No corresponding 'inner' declaration found for component .Modelica.Fluid.System cathode.system declared as 'outer '. The existing 'inner' components are: There are no 'inner' components defined in the model in any of the parent scopes of 'outer' component's scope: Chemical.Components.Solution$cathode. Check if you have not misspelled the 'outer' component name. Please declare an 'inner' component with the same name in the top scope. Continuing flattening by only considering the 'outer' component declaration. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo:4721:7-4721:66:writable] Warning: No corresponding 'inner' declaration found for component .Modelica.Fluid.System water.system declared as 'outer '. The existing 'inner' components are: There are no 'inner' components defined in the model in any of the parent scopes of 'outer' component's scope: Chemical.Components.Solution$water. Check if you have not misspelled the 'outer' component name. Please declare an 'inner' component with the same name in the top scope. Continuing flattening by only considering the 'outer' component declaration. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo:3011:6-3011:65:writable] Warning: No corresponding 'inner' declaration found for component .Modelica.Fluid.System electrone.system declared as 'outer '. The existing 'inner' components are: There are no 'inner' components defined in the model in any of the parent scopes of 'outer' component's scope: Chemical.Components.ElectronTransfer. Check if you have not misspelled the 'outer' component name. Please declare an 'inner' component with the same name in the top scope. Continuing flattening by only considering the 'outer' component declaration. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo:3011:6-3011:65:writable] Warning: No corresponding 'inner' declaration found for component .Modelica.Fluid.System electrone1.system declared as 'outer '. The existing 'inner' components are: There are no 'inner' components defined in the model in any of the parent scopes of 'outer' component's scope: Chemical.Components.ElectronTransfer. Check if you have not misspelled the 'outer' component name. Please declare an 'inner' component with the same name in the top scope. Continuing flattening by only considering the 'outer' component declaration. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo:4721:7-4721:66:writable] Warning: No corresponding 'inner' declaration found for component .Modelica.Fluid.System air.system declared as 'outer '. The existing 'inner' components are: There are no 'inner' components defined in the model in any of the parent scopes of 'outer' component's scope: Chemical.Components.Solution$air. Check if you have not misspelled the 'outer' component name. Please declare an 'inner' component with the same name in the top scope. Continuing flattening by only considering the 'outer' component declaration. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Chemical 1.4.0-master/package.mo:3011:6-3011:65:writable] Warning: No corresponding 'inner' declaration found for component .Modelica.Fluid.System liquidWater.system declared as 'outer '. The existing 'inner' components are: There are no 'inner' components defined in the model in any of the parent scopes of 'outer' component's scope: Chemical.Components.Substance$liquidWater. Check if you have not misspelled the 'outer' component name. Please declare an 'inner' component with the same name in the top scope. Continuing flattening by only considering the 'outer' component declaration. Notification: Performance of FrontEnd - DAE generated: time 0.1229/0.6651, allocations: 56.5 MB / 0.5715 GB, free: 5.953 MB / 378.7 MB Notification: Performance of FrontEnd: time 1.293e-06/0.6652, allocations: 0 / 0.5715 GB, free: 5.953 MB / 378.7 MB Notification: Performance of Transformations before backend: time 0.0001028/0.6653, allocations: 51.75 kB / 0.5715 GB, free: 5.906 MB / 378.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 501 * Number of variables: 501 Notification: Performance of Generate backend data structure: time 0.004962/0.6702, allocations: 2.159 MB / 0.5736 GB, free: 3.703 MB / 378.7 MB Notification: Performance of prepare preOptimizeDAE: time 5.038e-05/0.6703, allocations: 16.02 kB / 0.5736 GB, free: 3.688 MB / 378.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001809/0.6721, allocations: 0.5003 MB / 0.5741 GB, free: 3.184 MB / 378.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002376/0.6745, allocations: 1.248 MB / 0.5753 GB, free: 1.891 MB / 378.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001146/0.6746, allocations: 113.6 kB / 0.5755 GB, free: 1.773 MB / 378.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002236/0.6749, allocations: 119.9 kB / 0.5756 GB, free: 1.656 MB / 378.7 MB Notification: Performance of preOpt removeEqualFunctionCalls (simulation): time 0.004335/0.6792, allocations: 3.284 MB / 0.5788 GB, free: 14.37 MB / 394.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00312/0.6824, allocations: 2.101 MB / 0.5808 GB, free: 12.21 MB / 394.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.275e-05/0.6824, allocations: 0 / 0.5808 GB, free: 12.21 MB / 394.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001153/0.6825, allocations: 0 / 0.5808 GB, free: 12.21 MB / 394.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.899e-05/0.6826, allocations: 52 kB / 0.5809 GB, free: 12.16 MB / 394.7 MB Warning: The model contains alias variables with conflicting start and/or 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 0.01191/0.6945, allocations: 8.762 MB / 0.5894 GB, free: 3.051 MB / 394.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.003064/0.6976, allocations: 2.539 MB / 0.5919 GB, free: 460 kB / 394.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.001174/0.6988, allocations: 0.9709 MB / 0.5929 GB, free: 15.47 MB / 410.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0006211/0.6994, allocations: 392.3 kB / 0.5932 GB, free: 15.09 MB / 410.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.057e-05/0.6995, allocations: 43.88 kB / 0.5933 GB, free: 15.04 MB / 410.7 MB Notification: Performance of pre-optimization done (n=134): time 3.808e-06/0.6995, allocations: 4 kB / 0.5933 GB, free: 15.03 MB / 410.7 MB Notification: Performance of matching and sorting (n=166): time 0.02826/0.7277, allocations: 8.561 MB / 0.6016 GB, free: 6.414 MB / 410.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 7.148e-05/0.7278, allocations: 124.1 kB / 0.6018 GB, free: 6.27 MB / 410.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001346/0.7292, allocations: 0.9174 MB / 0.6027 GB, free: 5.34 MB / 410.7 MB Notification: Performance of collectPreVariables (initialization): time 0.0001698/0.7294, allocations: 25.7 kB / 0.6027 GB, free: 5.309 MB / 410.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0006579/0.73, allocations: 0.9548 MB / 0.6036 GB, free: 4.34 MB / 410.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0004694/0.7305, allocations: 0.5465 MB / 0.6041 GB, free: 3.785 MB / 410.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 7.899e-05/0.7306, allocations: 0 / 0.6041 GB, free: 3.785 MB / 410.7 MB Notification: Performance of setup shared object (initialization): time 0.0001681/0.7308, allocations: 377.9 kB / 0.6045 GB, free: 3.41 MB / 410.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001352/0.7321, allocations: 1.047 MB / 0.6055 GB, free: 2.359 MB / 410.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001648/0.7338, allocations: 1.565 MB / 0.6071 GB, free: 0.5508 MB / 410.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.00323/0.737, allocations: 1.507 MB / 0.6085 GB, free: 15.04 MB / 426.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.154e-05/0.7371, allocations: 7.953 kB / 0.6085 GB, free: 15.04 MB / 426.7 MB Notification: Performance of matching and sorting (n=256) (initialization): time 0.00801/0.7451, allocations: 3.509 MB / 0.612 GB, free: 11.5 MB / 426.7 MB Notification: Performance of prepare postOptimizeDAE: time 3.081e-05/0.7451, allocations: 20.03 kB / 0.612 GB, free: 11.48 MB / 426.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.96e-05/0.7452, allocations: 24 kB / 0.612 GB, free: 11.46 MB / 426.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.002856/0.748, allocations: 0.5311 MB / 0.6125 GB, free: 10.91 MB / 426.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001995/0.7501, allocations: 459.3 kB / 0.613 GB, free: 10.46 MB / 426.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006289/0.7564, allocations: 5.201 MB / 0.618 GB, free: 4.949 MB / 426.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001816/0.7582, allocations: 99.55 kB / 0.6181 GB, free: 4.852 MB / 426.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002355/0.7585, allocations: 107.9 kB / 0.6182 GB, free: 4.746 MB / 426.7 MB Warning: Iteration variables with default zero start attribute in torn nonlinear equation system: liquidWater.z:DUMMY_STATE(unit = "1" protected = true ) "Charge number of ion" type: Real Warning: Iteration variables with default zero start attribute in torn nonlinear equation system: H2_gas.solution.I:VARIABLE(flow=false min = 0.0 max = 0.0 unit = "1" ) "Mole fraction based ionic strength of the solution" type: Real Warning: Iteration variables with default zero start attribute in torn nonlinear equation system: voltageSensor.v:VARIABLE(unit = "V" ) "Voltage between pin p and n (= p.v - n.v) as output signal" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 77 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (236): * Single equations (assignments): 229 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 5 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(1,100.0%) 2} * Non-linear torn systems: 4 {1 9,1 4,1 1,1 2} Notification: Performance of prepare postOptimizeDAE: time 0.0003861/0.7588, allocations: 167.3 kB / 0.6184 GB, free: 4.578 MB / 426.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002876/0.7591, allocations: 158 kB / 0.6186 GB, free: 4.422 MB / 426.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.009722/0.7689, allocations: 3.441 MB / 0.6219 GB, free: 0.9492 MB / 426.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.008437/0.7773, allocations: 3.039 MB / 0.6249 GB, free: 13.89 MB / 442.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.172e-05/0.7774, allocations: 11.94 kB / 0.6249 GB, free: 13.88 MB / 442.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.702e-05/0.7774, allocations: 7.969 kB / 0.6249 GB, free: 13.87 MB / 442.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01438/0.7918, allocations: 6.523 MB / 0.6313 GB, free: 7.207 MB / 442.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.208e-05/0.7919, allocations: 8 kB / 0.6313 GB, free: 7.199 MB / 442.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001519/0.7934, allocations: 299.6 kB / 0.6316 GB, free: 6.906 MB / 442.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.004535/0.7979, allocations: 0.7299 MB / 0.6323 GB, free: 6.16 MB / 442.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001332/0.7981, allocations: 28.03 kB / 0.6323 GB, free: 6.133 MB / 442.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.007959/0.8061, allocations: 5.904 MB / 0.6381 GB, free: 15.92 MB / 458.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.004799/0.8109, allocations: 2.034 MB / 0.6401 GB, free: 13.75 MB / 458.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0114/0.8223, allocations: 5.236 MB / 0.6452 GB, free: 8.258 MB / 458.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0005698/0.8229, allocations: 231 kB / 0.6454 GB, free: 8.012 MB / 458.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002042/0.8231, allocations: 8 kB / 0.6454 GB, free: 8.004 MB / 458.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001028/0.8242, allocations: 55.78 kB / 0.6454 GB, free: 7.949 MB / 458.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002448/0.8244, allocations: 133 kB / 0.6456 GB, free: 7.82 MB / 458.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000107/0.8245, allocations: 63.97 kB / 0.6456 GB, free: 7.758 MB / 458.7 MB Notification: Performance of sorting global known variables: time 0.0009192/0.8255, allocations: 0.662 MB / 0.6463 GB, free: 7.094 MB / 458.7 MB Notification: Performance of sort global known variables: time 1.7e-07/0.8255, allocations: 0 / 0.6463 GB, free: 7.094 MB / 458.7 MB Notification: Performance of remove unused functions: time 0.002434/0.8279, allocations: 0.7886 MB / 0.6471 GB, free: 6.305 MB / 458.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 21 * Number of states: 7 ($STATESET3.x[2],$STATESET3.x[1],O2_gas.logn,H2_gas.logn,anode.temperature,cathode.temperature,air.temperature) * Number of discrete variables: 0 () * Number of discrete states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (157): * Single equations (assignments): 152 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 5 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(1,100.0%) 2} * Non-linear torn systems: 4 {1 11,1 4,1 1,3 5} Notification: Performance of Backend phase and start with SimCode phase: time 0.001242/0.8292, allocations: 0.7216 MB / 0.6478 GB, free: 5.57 MB / 458.7 MB Notification: Performance of simCode: created initialization part: time 0.003673/0.8329, allocations: 2.687 MB / 0.6504 GB, free: 2.863 MB / 458.7 MB Notification: Performance of simCode: created event and clocks part: time 5.009e-06/0.8329, allocations: 4.375 kB / 0.6504 GB, free: 2.859 MB / 458.7 MB Notification: Performance of simCode: created simulation system equations: time 0.00199/0.8349, allocations: 1.497 MB / 0.6518 GB, free: 1.344 MB / 458.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002464/0.8374, allocations: 496.5 kB / 0.6523 GB, free: 0.8672 MB / 458.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005246/0.8426, allocations: 3.274 MB / 0.6555 GB, free: 13.48 MB / 474.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001143/0.8438, allocations: 1.458 MB / 0.6569 GB, free: 11.99 MB / 474.7 MB Notification: Performance of simCode: alias equations: time 0.00141/0.8452, allocations: 305.5 kB / 0.6572 GB, free: 11.68 MB / 474.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004049/0.8456, allocations: 151.4 kB / 0.6574 GB, free: 11.54 MB / 474.7 MB Notification: Performance of SimCode: time 8.02e-07/0.8456, allocations: 3.938 kB / 0.6574 GB, free: 11.53 MB / 474.7 MB Notification: Performance of Templates: time 0.3038/1.149, allocations: 33.08 MB / 0.6897 GB, free: 117.8 MB / 474.7 MB make -j1 -f Chemical_Chemical.Examples.WaterElectrolysis.makefile (rm -f Chemical_Chemical.Examples.WaterElectrolysis.pipe ; mkfifo Chemical_Chemical.Examples.WaterElectrolysis.pipe ; head -c 1048576 < Chemical_Chemical.Examples.WaterElectrolysis.pipe >> ../files/Chemical_Chemical.Examples.WaterElectrolysis.sim & ./Chemical_Chemical.Examples.WaterElectrolysis -abortSlowSimulation -alarm=480 -lv LOG_STATS > Chemical_Chemical.Examples.WaterElectrolysis.pipe 2>&1)