Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.Examples.Performance.Example3.conf.json loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 8.1.1-maint.8.1.x/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) Using package ModelicaServices with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Using package Modelica with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package Buildings with version 8.1.1 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 8.1.1-maint.8.1.x/package.mo) Running command: translateModel(Buildings.Fluid.Examples.Performance.Example3,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Examples.Performance.Example3") translateModel(Buildings.Fluid.Examples.Performance.Example3,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Examples.Performance.Example3") Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 8.1.1-maint.8.1.x/package.mo): time 1.634/1.634, allocations: 297.4 MB / 312.6 MB, free: 2.914 MB / 234.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001037/0.001037, allocations: 178 kB / 382.3 MB, free: 14.84 MB / 314.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.345/1.345, allocations: 225.7 MB / 0.6617 GB, free: 7.191 MB / 490.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0007358/0.0007359, allocations: 102.1 kB / 0.7789 GB, free: 46.9 MB / 0.5417 GB Notification: Performance of FrontEnd - loaded program: time 0.0003493/0.0003494, allocations: 8 kB / 0.9058 GB, free: 4.93 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.5538/0.5542, allocations: 119.2 MB / 1.022 GB, free: 57.84 MB / 0.698 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.Performance.Example3): time 0.0276/0.5818, allocations: 32.43 MB / 1.054 GB, free: 34.26 MB / 0.698 GB Notification: Performance of NFInst.instExpressions: time 0.01914/0.601, allocations: 19.12 MB / 1.073 GB, free: 18.18 MB / 0.698 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001845/0.6029, allocations: 43.34 kB / 1.073 GB, free: 18.16 MB / 0.698 GB Notification: Performance of NFTyping.typeComponents: time 0.002246/0.6052, allocations: 0.6317 MB / 1.073 GB, free: 17.84 MB / 0.698 GB Notification: Performance of NFTyping.typeBindings: time 0.004093/0.6093, allocations: 1.442 MB / 1.075 GB, free: 17.03 MB / 0.698 GB Notification: Performance of NFTyping.typeClassSections: time 0.003361/0.6127, allocations: 1.274 MB / 1.076 GB, free: 16.37 MB / 0.698 GB Notification: Performance of NFFlatten.flatten: time 0.0062/0.6189, allocations: 6.408 MB / 1.082 GB, free: 14.04 MB / 0.698 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00266/0.6216, allocations: 1.736 MB / 1.084 GB, free: 13.39 MB / 0.698 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003296/0.6249, allocations: 1.626 MB / 1.085 GB, free: 12.74 MB / 0.698 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002591/0.6275, allocations: 1.357 MB / 1.087 GB, free: 12.16 MB / 0.698 GB Notification: Performance of NFPackage.collectConstants: time 0.0006641/0.6282, allocations: 69.34 kB / 1.087 GB, free: 12.16 MB / 0.698 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003989/0.6322, allocations: 1.058 MB / 1.088 GB, free: 11.86 MB / 0.698 GB Notification: Performance of NFScalarize.scalarize: time 0.001128/0.6334, allocations: 395.5 kB / 1.088 GB, free: 11.67 MB / 0.698 GB Notification: Performance of NFVerifyModel.verify: time 0.003787/0.6372, allocations: 0.9568 MB / 1.089 GB, free: 11.1 MB / 0.698 GB Notification: Performance of NFConvertDAE.convert: time 0.006701/0.6439, allocations: 2.834 MB / 1.092 GB, free: 10.24 MB / 0.698 GB Notification: Performance of FrontEnd - DAE generated: time 8.115e-06/0.644, allocations: 0 / 1.092 GB, free: 10.24 MB / 0.698 GB Notification: Performance of FrontEnd: time 2.815e-06/0.644, allocations: 0 / 1.092 GB, free: 10.24 MB / 0.698 GB Notification: Performance of Transformations before backend: time 0.0001292/0.6441, allocations: 0 / 1.092 GB, free: 10.24 MB / 0.698 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 235 * Number of variables: 235 Notification: Performance of Generate backend data structure: time 0.004448/0.6486, allocations: 2.072 MB / 1.094 GB, free: 8.898 MB / 0.698 GB Notification: Performance of prepare preOptimizeDAE: time 4.409e-05/0.6486, allocations: 11.84 kB / 1.094 GB, free: 8.898 MB / 0.698 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001464/0.6501, allocations: 311.4 kB / 1.094 GB, free: 8.777 MB / 0.698 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003872/0.654, allocations: 1.649 MB / 1.096 GB, free: 7.902 MB / 0.698 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001126/0.6541, allocations: 78.72 kB / 1.096 GB, free: 7.867 MB / 0.698 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003919/0.6545, allocations: 104.5 kB / 1.096 GB, free: 7.836 MB / 0.698 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002766/0.6573, allocations: 1.326 MB / 1.097 GB, free: 7.223 MB / 0.698 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.948e-05/0.6574, allocations: 8.719 kB / 1.097 GB, free: 7.219 MB / 0.698 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001555/0.6575, allocations: 37.91 kB / 1.097 GB, free: 7.191 MB / 0.698 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.611e-05/0.6576, allocations: 27.19 kB / 1.097 GB, free: 7.188 MB / 0.698 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002207/0.6598, allocations: 1.06 MB / 1.098 GB, free: 6.832 MB / 0.698 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 0.008846/0.6686, allocations: 6.982 MB / 1.105 GB, free: 1.594 MB / 0.698 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001405/0.6701, allocations: 0.6735 MB / 1.106 GB, free: 1.359 MB / 0.698 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007403/0.6708, allocations: 428.4 kB / 1.106 GB, free: 1.215 MB / 0.698 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003631/0.6745, allocations: 1.828 MB / 1.108 GB, free: 15.95 MB / 0.7136 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.000945/0.6755, allocations: 408.1 kB / 1.109 GB, free: 15.8 MB / 0.7136 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001054/0.6765, allocations: 114.2 kB / 1.109 GB, free: 15.75 MB / 0.7136 GB Notification: Performance of pre-optimization done (n=46): time 7.825e-06/0.6766, allocations: 2.906 kB / 1.109 GB, free: 15.75 MB / 0.7136 GB Notification: Performance of matching and sorting (n=46): time 0.005438/0.682, allocations: 1.538 MB / 1.11 GB, free: 15.22 MB / 0.7136 GB Notification: Performance of inlineWhenForInitialization (initialization): time 8.177e-05/0.6821, allocations: 65.42 kB / 1.11 GB, free: 15.15 MB / 0.7136 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005608/0.6877, allocations: 1.842 MB / 1.112 GB, free: 14.47 MB / 0.7136 GB Notification: Performance of collectPreVariables (initialization): time 0.0002016/0.688, allocations: 40.52 kB / 1.112 GB, free: 14.43 MB / 0.7136 GB Notification: Performance of collectInitialEqns (initialization): time 0.001352/0.6893, allocations: 0.8449 MB / 1.113 GB, free: 13.77 MB / 0.7136 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002412/0.6896, allocations: 166.4 kB / 1.113 GB, free: 13.64 MB / 0.7136 GB Notification: Performance of simplifyInitialFunctions (initialization): time 6.904e-05/0.6897, allocations: 19.53 kB / 1.113 GB, free: 13.62 MB / 0.7136 GB Notification: Performance of setup shared object (initialization): time 0.000169/0.6899, allocations: 336.3 kB / 1.113 GB, free: 13.3 MB / 0.7136 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009055/0.6908, allocations: 353.3 kB / 1.114 GB, free: 13.2 MB / 0.7136 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001249/0.692, allocations: 0.8108 MB / 1.114 GB, free: 12.5 MB / 0.7136 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001993/0.694, allocations: 1.064 MB / 1.116 GB, free: 11.79 MB / 0.7136 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.645e-05/0.6941, allocations: 2.562 kB / 1.116 GB, free: 11.79 MB / 0.7136 GB Notification: Performance of matching and sorting (n=99) (initialization): time 0.003758/0.6978, allocations: 1.415 MB / 1.117 GB, free: 11.25 MB / 0.7136 GB Notification: Performance of prepare postOptimizeDAE: time 0.0003844/0.6982, allocations: 427.4 kB / 1.117 GB, free: 10.71 MB / 0.7136 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.74e-05/0.6983, allocations: 9.938 kB / 1.117 GB, free: 10.71 MB / 0.7136 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000962/0.6992, allocations: 253.6 kB / 1.118 GB, free: 10.65 MB / 0.7136 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006966/0.6999, allocations: 173.1 kB / 1.118 GB, free: 10.63 MB / 0.7136 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0009617/0.7009, allocations: 0.849 MB / 1.119 GB, free: 10 MB / 0.7136 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001748/0.7027, allocations: 120.6 kB / 1.119 GB, free: 9.973 MB / 0.7136 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001309/0.7028, allocations: 50.2 kB / 1.119 GB, free: 9.965 MB / 0.7136 GB Notification: Performance of prepare postOptimizeDAE: time 1.091e-05/0.7029, allocations: 4.25 kB / 1.119 GB, free: 9.965 MB / 0.7136 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0022/0.7051, allocations: 1.035 MB / 1.12 GB, free: 9.559 MB / 0.7136 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.792e-05/0.7051, allocations: 14.41 kB / 1.12 GB, free: 9.559 MB / 0.7136 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.00044/0.7055, allocations: 148.3 kB / 1.12 GB, free: 9.531 MB / 0.7136 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005828/0.7061, allocations: 167.8 kB / 1.12 GB, free: 9.508 MB / 0.7136 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002847/0.709, allocations: 2.352 MB / 1.122 GB, free: 7.773 MB / 0.7136 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001581/0.7106, allocations: 114.5 kB / 1.122 GB, free: 7.742 MB / 0.7136 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001126/0.7107, allocations: 41.36 kB / 1.123 GB, free: 7.738 MB / 0.7136 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 46 * Number of states: 0 () * Number of discrete variables: 8 ($whenCondition1,$PRE.pulse.T_start,pulse.T_start,$PRE.pulse.count,pulse.count,nRes.y,from_dp.y,mergeDp.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (85): * Single equations (assignments): 82 * Array equations: 1 * Algorithm blocks: 1 * 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 {(1,12)} Notification: Performance of prepare postOptimizeDAE: time 0.001266/0.712, allocations: 0.5815 MB / 1.123 GB, free: 7.398 MB / 0.7136 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005477/0.7126, allocations: 179.3 kB / 1.123 GB, free: 7.301 MB / 0.7136 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002667/0.7152, allocations: 1.075 MB / 1.124 GB, free: 6.891 MB / 0.7136 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.452e-05/0.7153, allocations: 13.17 kB / 1.124 GB, free: 6.887 MB / 0.7136 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.448e-06/0.7153, allocations: 0 / 1.124 GB, free: 6.887 MB / 0.7136 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001823/0.7171, allocations: 1.019 MB / 1.125 GB, free: 6.293 MB / 0.7136 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 postOpt removeSimpleEquations (simulation): time 0.005699/0.7228, allocations: 2.318 MB / 1.128 GB, free: 5.211 MB / 0.7136 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.472e-06/0.7228, allocations: 1.5 kB / 1.128 GB, free: 5.211 MB / 0.7136 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004869/0.7233, allocations: 93.45 kB / 1.128 GB, free: 5.203 MB / 0.7136 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003732/0.7237, allocations: 160.2 kB / 1.128 GB, free: 5.145 MB / 0.7136 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.187e-05/0.7238, allocations: 12.3 kB / 1.128 GB, free: 5.141 MB / 0.7136 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0008249/0.7246, allocations: 0.81 MB / 1.129 GB, free: 4.523 MB / 0.7136 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.575e-06/0.7246, allocations: 0 / 1.129 GB, free: 4.523 MB / 0.7136 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003398/0.728, allocations: 1.482 MB / 1.13 GB, free: 3.859 MB / 0.7136 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001114/0.7292, allocations: 345.1 kB / 1.13 GB, free: 3.621 MB / 0.7136 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005426/0.7297, allocations: 11.81 kB / 1.13 GB, free: 3.613 MB / 0.7136 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001453/0.7312, allocations: 95.03 kB / 1.13 GB, free: 3.598 MB / 0.7136 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001468/0.7313, allocations: 44.77 kB / 1.131 GB, free: 3.586 MB / 0.7136 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.886e-05/0.7314, allocations: 24.61 kB / 1.131 GB, free: 3.582 MB / 0.7136 GB Notification: Performance of sorting global known variables: time 0.003352/0.7348, allocations: 1.272 MB / 1.132 GB, free: 3.105 MB / 0.7136 GB Notification: Performance of sort global known variables: time 3.1e-07/0.7348, allocations: 0 / 1.132 GB, free: 3.105 MB / 0.7136 GB Notification: Performance of remove unused functions: time 0.004344/0.7391, allocations: 0.8501 MB / 1.133 GB, free: 2.965 MB / 0.7136 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 1 (pump.vol.dynBal.U) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (40): * Single equations (assignments): 34 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * When equations: 2 * 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 {(1,12)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001365/0.7405, allocations: 391.9 kB / 1.133 GB, free: 2.789 MB / 0.7136 GB Notification: Performance of simCode: created initialization part: time 0.003852/0.7444, allocations: 1.561 MB / 1.135 GB, free: 2.125 MB / 0.7136 GB Notification: Performance of simCode: created event and clocks part: time 6.372e-06/0.7444, allocations: 0.9688 kB / 1.135 GB, free: 2.125 MB / 0.7136 GB Notification: Performance of simCode: created simulation system equations: time 0.0009963/0.7454, allocations: 369.4 kB / 1.135 GB, free: 2.012 MB / 0.7136 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005364/0.7508, allocations: 0.8399 MB / 1.136 GB, free: 1.793 MB / 0.7136 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007663/0.7585, allocations: 3.532 MB / 1.139 GB, free: 15.86 MB / 0.7292 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002224/0.7607, allocations: 1.496 MB / 1.141 GB, free: 15.04 MB / 0.7292 GB Notification: Performance of simCode: alias equations: time 0.002737/0.7635, allocations: 433.2 kB / 1.141 GB, free: 14.95 MB / 0.7292 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006581/0.7642, allocations: 136.8 kB / 1.141 GB, free: 14.93 MB / 0.7292 GB Notification: Performance of SimCode: time 6.142e-06/0.7642, allocations: 4 kB / 1.141 GB, free: 14.93 MB / 0.7292 GB Notification: Performance of Templates: time 0.06855/0.8328, allocations: 33.01 MB / 1.173 GB, free: 4.168 MB / 0.7448 GB make -j1 -f Buildings_8_Buildings.Fluid.Examples.Performance.Example3.makefile (rm -f Buildings_8_Buildings.Fluid.Examples.Performance.Example3.pipe ; mkfifo Buildings_8_Buildings.Fluid.Examples.Performance.Example3.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.Examples.Performance.Example3.pipe >> ../files/Buildings_8_Buildings.Fluid.Examples.Performance.Example3.sim & ./Buildings_8_Buildings.Fluid.Examples.Performance.Example3 -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.Examples.Performance.Example3.pipe 2>&1)