Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.1.0-beta.om_ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo", uses=false) Using package ModelicaTest with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo) Using package Modelica with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo) Using package Complex with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo) Using package ModelicaServices with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo) Running command: "" <> buildModelFMU(ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_Fluid_TestComponents_Vessels_TestMixingVolumesPressureStates",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_Fluid_TestComponents_Vessels_TestMixingVolumesPressureStates",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo): time 0.001275/0.001275, allocations: 122.1 kB / 17.79 MB, free: 5.273 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo): time 0.001299/0.001299, allocations: 202 kB / 18.74 MB, free: 4.332 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo): time 1.41/1.41, allocations: 227.4 MB / 247 MB, free: 10.46 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo): time 0.2233/0.2233, allocations: 46.12 MB / 344.3 MB, free: 11.46 MB / 286.1 MB Warning: Requested package Modelica of version 4.1.0, but this package was already loaded with version trunk. OpenModelica cannot reason about compatibility between the two packages since they are not semantic versions. Notification: Performance of FrontEnd - loaded program: time 0.002444/0.002444, allocations: 79.88 kB / 480.9 MB, free: 4.523 MB / 350.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3451/0.3476, allocations: 62.45 MB / 0.5306 GB, free: 13.36 MB / 398.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates): time 0.07209/0.4197, allocations: 57.02 MB / 0.5863 GB, free: 8.559 MB / 446.1 MB Notification: Performance of NFInst.instExpressions: time 0.03895/0.4587, allocations: 30.74 MB / 0.6163 GB, free: 9.711 MB / 478.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001361/0.4602, allocations: 31.81 kB / 0.6163 GB, free: 9.68 MB / 478.1 MB Notification: Performance of NFTyping.typeComponents: time 0.002228/0.4624, allocations: 0.6677 MB / 0.617 GB, free: 9.008 MB / 478.1 MB Notification: Performance of NFTyping.typeBindings: time 0.01701/0.4795, allocations: 5.739 MB / 0.6226 GB, free: 3.27 MB / 478.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.01221/0.4917, allocations: 3.894 MB / 0.6264 GB, free: 15.38 MB / 494.1 MB Notification: Performance of NFFlatten.flatten: time 0.00542/0.4971, allocations: 3.051 MB / 0.6294 GB, free: 12.32 MB / 494.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001856/0.499, allocations: 0.8208 MB / 0.6302 GB, free: 11.48 MB / 494.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.01758/0.5167, allocations: 6.33 MB / 0.6363 GB, free: 5.066 MB / 494.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.01977/0.5365, allocations: 7.439 MB / 0.6436 GB, free: 13.52 MB / 0.4981 GB Notification: Performance of NFPackage.collectConstants: time 0.0005355/0.5371, allocations: 116 kB / 0.6437 GB, free: 13.4 MB / 0.4981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01958/0.5567, allocations: 8.401 MB / 0.6519 GB, free: 4.992 MB / 0.4981 GB Notification: Performance of NFScalarize.scalarize: time 0.000881/0.5576, allocations: 402.8 kB / 0.6523 GB, free: 4.598 MB / 0.4981 GB Notification: Performance of NFVerifyModel.verify: time 0.00141/0.559, allocations: 0.6806 MB / 0.653 GB, free: 3.914 MB / 0.4981 GB Notification: Performance of NFConvertDAE.convert: time 0.0163/0.5754, allocations: 6.339 MB / 0.6592 GB, free: 13.56 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 6.162e-06/0.5754, allocations: 0 / 0.6592 GB, free: 13.56 MB / 0.5137 GB Notification: Performance of FrontEnd: time 2.194e-06/0.5754, allocations: 0 / 0.6592 GB, free: 13.56 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 4.581e-05/0.5755, allocations: 0 / 0.6592 GB, free: 13.56 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 256 * Number of variables: 256 Notification: Performance of Generate backend data structure: time 0.006847/0.5823, allocations: 2.317 MB / 0.6614 GB, free: 11.18 MB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 4.706e-05/0.5824, allocations: 12.03 kB / 0.6614 GB, free: 11.17 MB / 0.5137 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002492/0.5826, allocations: 164.5 kB / 0.6616 GB, free: 11 MB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005018/0.5877, allocations: 0.6246 MB / 0.6622 GB, free: 10.38 MB / 0.5137 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001942/0.5897, allocations: 0.8155 MB / 0.663 GB, free: 9.516 MB / 0.5137 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002534/0.59, allocations: 213.3 kB / 0.6632 GB, free: 9.285 MB / 0.5137 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002996/0.5903, allocations: 103.9 kB / 0.6633 GB, free: 9.184 MB / 0.5137 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004951/0.5952, allocations: 1.814 MB / 0.6651 GB, free: 7.234 MB / 0.5137 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.608e-05/0.5953, allocations: 3.938 kB / 0.6651 GB, free: 7.23 MB / 0.5137 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001512/0.5955, allocations: 51.98 kB / 0.6651 GB, free: 7.18 MB / 0.5137 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.946e-05/0.5955, allocations: 49.92 kB / 0.6652 GB, free: 7.129 MB / 0.5137 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004525/0.6001, allocations: 1.631 MB / 0.6668 GB, free: 5.496 MB / 0.5137 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 0.01371/0.6138, allocations: 8.588 MB / 0.6752 GB, free: 12.29 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003445/0.6173, allocations: 0.989 MB / 0.6761 GB, free: 11.29 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000954/0.6183, allocations: 429.4 kB / 0.6765 GB, free: 10.88 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.05127/0.6696, allocations: 27.54 MB / 0.7034 GB, free: 11.09 MB / 0.5606 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.807e-05/0.6697, allocations: 47.06 kB / 0.7035 GB, free: 11.04 MB / 0.5606 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0007114/0.6705, allocations: 99.22 kB / 0.7036 GB, free: 10.94 MB / 0.5606 GB Notification: Performance of pre-optimization done (n=70): time 3.767e-06/0.6705, allocations: 0 / 0.7036 GB, free: 10.94 MB / 0.5606 GB Notification: Performance of matching and sorting (n=78): time 0.01132/0.6818, allocations: 3.476 MB / 0.707 GB, free: 7.387 MB / 0.5606 GB Notification: Performance of inlineWhenForInitialization (initialization): time 8.48e-05/0.6819, allocations: 115.5 kB / 0.7071 GB, free: 7.25 MB / 0.5606 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001278/0.6832, allocations: 0.849 MB / 0.7079 GB, free: 6.395 MB / 0.5606 GB Notification: Performance of collectPreVariables (initialization): time 0.0001243/0.6834, allocations: 41.7 kB / 0.7079 GB, free: 6.348 MB / 0.5606 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005224/0.6839, allocations: 0.5852 MB / 0.7085 GB, free: 5.754 MB / 0.5606 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003176/0.6842, allocations: 293.6 kB / 0.7088 GB, free: 5.465 MB / 0.5606 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004058/0.6846, allocations: 274.7 kB / 0.7091 GB, free: 5.191 MB / 0.5606 GB Notification: Performance of setup shared object (initialization): time 0.0002541/0.6849, allocations: 406.7 kB / 0.7094 GB, free: 4.785 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00102/0.6859, allocations: 434.3 kB / 0.7099 GB, free: 4.359 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001592/0.6875, allocations: 0.9892 MB / 0.7108 GB, free: 3.102 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00261/0.6902, allocations: 1.494 MB / 0.7123 GB, free: 1.34 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.186e-05/0.6902, allocations: 11.94 kB / 0.7123 GB, free: 1.328 MB / 0.5606 GB Notification: Performance of matching and sorting (n=165) (initialization): time 0.003797/0.694, allocations: 1.729 MB / 0.714 GB, free: 15.59 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 3.117e-05/0.694, allocations: 12.19 kB / 0.714 GB, free: 15.57 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.919e-05/0.6941, allocations: 24 kB / 0.714 GB, free: 15.55 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002619/0.6967, allocations: 0.5949 MB / 0.7146 GB, free: 14.95 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007458/0.6975, allocations: 247.6 kB / 0.7148 GB, free: 14.71 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002399/0.6999, allocations: 1.828 MB / 0.7166 GB, free: 12.83 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009036/0.7008, allocations: 68.03 kB / 0.7167 GB, free: 12.76 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000121/0.7009, allocations: 79.98 kB / 0.7168 GB, free: 12.68 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 86 * Number of states: 0 () * Number of discrete variables: 16 (sink2.medium.phase,mixingVolume2.heatTransfer.states[1].phase,flowSource2.medium.phase,mixingVolume1.heatTransfer.states[1].phase,simpleGenericOrifice1.state_b.phase,simpleGenericOrifice1.state_a.phase,simpleGenericOrifice2.state_b.phase,simpleGenericOrifice2.state_a.phase,mixingVolume1.regularFlow[1],mixingVolume1.regularFlow[2],mixingVolume2.regularFlow[1],mixingVolume2.regularFlow[2],mixingVolume2.inFlow[2],mixingVolume2.inFlow[1],mixingVolume1.inFlow[2],mixingVolume1.inFlow[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (131): * Single equations (assignments): 129 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(1,4), (3,28)} Notification: Performance of prepare postOptimizeDAE: time 0.0005732/0.7015, allocations: 339.5 kB / 0.7171 GB, free: 12.34 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002363/0.7018, allocations: 115.2 kB / 0.7172 GB, free: 12.23 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006354/0.7081, allocations: 4.441 MB / 0.7215 GB, free: 7.742 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.556e-05/0.7082, allocations: 55.91 kB / 0.7216 GB, free: 7.688 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.124e-05/0.7082, allocations: 4 kB / 0.7216 GB, free: 7.684 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.496e-05/0.7083, allocations: 7.922 kB / 0.7216 GB, free: 7.676 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.008726/0.717, allocations: 6.259 MB / 0.7277 GB, free: 1.309 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.485e-06/0.717, allocations: 0 / 0.7277 GB, free: 1.309 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006465/0.7177, allocations: 155.8 kB / 0.7279 GB, free: 1.156 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001607/0.7193, allocations: 0.5332 MB / 0.7284 GB, free: 0.6211 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000102/0.7194, allocations: 31.98 kB / 0.7284 GB, free: 0.5898 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.2468/0.9663, allocations: 1.787 MB / 0.7301 GB, free: 188.6 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.276e-06/0.9663, allocations: 0 / 0.7301 GB, free: 188.6 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005026/0.9713, allocations: 3.956 MB / 0.734 GB, free: 187.2 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004691/0.9718, allocations: 371.2 kB / 0.7344 GB, free: 187.1 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001571/0.972, allocations: 33.23 kB / 0.7344 GB, free: 187.1 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000533/0.9726, allocations: 47.73 kB / 0.7344 GB, free: 187 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001418/0.9727, allocations: 73.09 kB / 0.7345 GB, free: 187 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.134e-05/0.9728, allocations: 34.84 kB / 0.7345 GB, free: 187 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.0007659/0.9735, allocations: 0.6636 MB / 0.7352 GB, free: 186.7 MB / 0.5762 GB Notification: Performance of sort global known variables: time 1.21e-07/0.9736, allocations: 0 / 0.7352 GB, free: 186.7 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.003299/0.9769, allocations: 1.466 MB / 0.7366 GB, free: 186.7 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 3 (mixingVolume1.medium.p,mixingVolume1.medium.h,mixingVolume2.medium.h) * Number of discrete variables: 34 ($cse1.region3boundary,$cse2.region3boundary,$cse3.phase,$cse3.region,$cse4.phase,$cse4.region,$cse5.phase,$cse5.region,$cse6.region3boundary,$cse7.region3boundary,$cse8.phase,$cse8.region,$cse9.phase,$cse9.region,$cse10.phase,$cse10.region,$cse11.phase,$cse11.region,$cse12.phase,$cse12.region,$cse15.phase,$cse15.region,$cse20.phase,$cse20.region,$cse22.phase,$cse22.region,$cse24.phase,$cse24.region,$cse26.phase,$cse26.region,mixingVolume1.heatTransfer.states[1].phase,flowSource2.medium.phase,mixingVolume2.heatTransfer.states[1].phase,sink2.medium.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (81): * Single equations (assignments): 63 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 16 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(4,10), (1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.009074/0.9859, allocations: 5.786 MB / 0.7423 GB, free: 184.4 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.002508/0.9885, allocations: 1.658 MB / 0.7439 GB, free: 183.8 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 4.729e-06/0.9885, allocations: 6.344 kB / 0.7439 GB, free: 183.8 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.001342/0.9899, allocations: 1.217 MB / 0.7451 GB, free: 183.2 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002424/0.9923, allocations: 0.5419 MB / 0.7456 GB, free: 183.1 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01559/1.008, allocations: 12.4 MB / 0.7577 GB, free: 172.5 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005924/1.009, allocations: 1.391 MB / 0.7591 GB, free: 171.1 MB / 0.5762 GB Notification: Performance of simCode: alias equations: time 0.001009/1.01, allocations: 0.5883 MB / 0.7597 GB, free: 170.5 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005046/1.01, allocations: 0.6516 MB / 0.7603 GB, free: 169.9 MB / 0.5762 GB Notification: Performance of SimCode: time 6.71e-07/1.01, allocations: 3.938 kB / 0.7603 GB, free: 169.9 MB / 0.5762 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1027/1.113, allocations: 75.93 MB / 0.8344 GB, free: 94.29 MB / 0.5762 GB Notification: Performance of buildModelFMU: Generate platform static: time 17.49/18.6, allocations: 20.25 kB / 0.8345 GB, free: 94.27 MB / 0.5762 GB (rm -f ModelicaTest_4.1.0-beta.om_ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates.pipe ; mkfifo ModelicaTest_4.1.0-beta.om_ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates.pipe ; head -c 1048576 < ModelicaTest_4.1.0-beta.om_ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates.pipe >> ../files/ModelicaTest_4.1.0-beta.om_ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ModelicaTest_4.1.0-beta.om_ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates_res.mat --tempDir=temp_ModelicaTest_4_1_0-beta_om_ModelicaTest_Fluid_TestComponents_Vessels_TestMixingVolumesPressureStates_fmu --startTime=0 --stopTime=10 --timeout=50 --tolerance=1e-06 ModelicaTest_4_1_0-beta_om_ModelicaTest_Fluid_TestComponents_Vessels_TestMixingVolumesPressureStates.fmu > ModelicaTest_4.1.0-beta.om_ModelicaTest.Fluid.TestComponents.Vessels.TestMixingVolumesPressureStates.pipe 2>&1)