Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/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 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.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass") translateModel(Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.008374/0.008374, allocations: 102.7 kB / 15.73 MB, free: 6.031 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001839/0.001839, allocations: 193.3 kB / 16.67 MB, free: 5.953 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.555/1.555, allocations: 205.1 MB / 222.6 MB, free: 4.469 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.576/1.576, allocations: 251.7 MB / 0.5094 GB, free: 3.016 MB / 414.1 MB 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: Performance of FrontEnd - loaded program: time 0.001673/0.001673, allocations: 72.47 kB / 0.7258 GB, free: 8.969 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2228/0.2245, allocations: 104.7 MB / 0.8281 GB, free: 160 kB / 0.6387 GB Notification: Performance of NFInst.instantiate(Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass): time 0.005707/0.2303, allocations: 5.099 MB / 0.8331 GB, free: 11.03 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.005933/0.2362, allocations: 4.71 MB / 0.8377 GB, free: 6.301 MB / 0.6544 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003714/0.2366, allocations: 15.94 kB / 0.8377 GB, free: 6.285 MB / 0.6544 GB Notification: Performance of NFTyping.typeComponents: time 0.001442/0.2381, allocations: 0.6022 MB / 0.8383 GB, free: 5.68 MB / 0.6544 GB Notification: Performance of NFTyping.typeBindings: time 0.0008156/0.2389, allocations: 436.9 kB / 0.8387 GB, free: 5.25 MB / 0.6544 GB Notification: Performance of NFTyping.typeClassSections: time 0.00154/0.2405, allocations: 0.7399 MB / 0.8394 GB, free: 4.508 MB / 0.6544 GB Notification: Performance of NFFlatten.flatten: time 0.00159/0.2421, allocations: 1.849 MB / 0.8412 GB, free: 2.656 MB / 0.6544 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0006602/0.2427, allocations: 0.5739 MB / 0.8418 GB, free: 2.059 MB / 0.6544 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0006389/0.2434, allocations: 0.6891 MB / 0.8424 GB, free: 1.367 MB / 0.6544 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0008363/0.2442, allocations: 0.7977 MB / 0.8432 GB, free: 0.5664 MB / 0.6544 GB Notification: Performance of NFPackage.collectConstants: time 0.0001794/0.2444, allocations: 148 kB / 0.8434 GB, free: 432 kB / 0.6544 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0006909/0.2451, allocations: 391.8 kB / 0.8437 GB, free: 40 kB / 0.6544 GB Notification: Performance of NFScalarize.scalarize: time 0.0003174/0.2455, allocations: 367 kB / 0.8441 GB, free: 15.68 MB / 0.67 GB Notification: Performance of NFVerifyModel.verify: time 0.0006555/0.2461, allocations: 0.7231 MB / 0.8448 GB, free: 14.95 MB / 0.67 GB Notification: Performance of NFConvertDAE.convert: time 0.001851/0.248, allocations: 2.122 MB / 0.8469 GB, free: 12.82 MB / 0.67 GB Notification: Performance of FrontEnd - DAE generated: time 4.549e-06/0.248, allocations: 0 / 0.8469 GB, free: 12.82 MB / 0.67 GB Notification: Performance of FrontEnd: time 1.323e-06/0.248, allocations: 0 / 0.8469 GB, free: 12.82 MB / 0.67 GB Notification: Performance of Transformations before backend: time 1.478e-05/0.248, allocations: 0 / 0.8469 GB, free: 12.82 MB / 0.67 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 184 * Number of variables: 184 Notification: Performance of Generate backend data structure: time 0.003289/0.2513, allocations: 1.877 MB / 0.8487 GB, free: 10.89 MB / 0.67 GB Notification: Performance of prepare preOptimizeDAE: time 3.927e-05/0.2514, allocations: 8.031 kB / 0.8487 GB, free: 10.89 MB / 0.67 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02597/0.2773, allocations: 4.306 MB / 0.8529 GB, free: 6.574 MB / 0.67 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.02381/0.3012, allocations: 4.504 MB / 0.8573 GB, free: 2.008 MB / 0.67 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.216e-05/0.3013, allocations: 58.38 kB / 0.8574 GB, free: 1.953 MB / 0.67 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000477/0.3018, allocations: 76.38 kB / 0.8574 GB, free: 1.879 MB / 0.67 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005501/0.3073, allocations: 2.087 MB / 0.8595 GB, free: 15.78 MB / 0.6856 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.046e-05/0.3073, allocations: 0 / 0.8595 GB, free: 15.78 MB / 0.6856 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001357/0.3075, allocations: 28 kB / 0.8595 GB, free: 15.75 MB / 0.6856 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.82e-05/0.3075, allocations: 20 kB / 0.8595 GB, free: 15.73 MB / 0.6856 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004969/0.3125, allocations: 1.795 MB / 0.8613 GB, free: 13.94 MB / 0.6856 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 0.01102/0.3235, allocations: 7.353 MB / 0.8684 GB, free: 5.766 MB / 0.6856 GB Notification: Performance of preOpt comSubExp (simulation): time 0.005403/0.3289, allocations: 1.874 MB / 0.8703 GB, free: 3.883 MB / 0.6856 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.005283/0.3342, allocations: 1.568 MB / 0.8718 GB, free: 2.309 MB / 0.6856 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005442/0.3348, allocations: 404.8 kB / 0.8722 GB, free: 1.84 MB / 0.6856 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.697e-05/0.3349, allocations: 47.06 kB / 0.8722 GB, free: 1.785 MB / 0.6856 GB Notification: Performance of pre-optimization done (n=70): time 3.446e-06/0.3349, allocations: 0 / 0.8722 GB, free: 1.785 MB / 0.6856 GB Notification: Performance of matching and sorting (n=70): time 0.0356/0.3705, allocations: 9.091 MB / 0.8811 GB, free: 8.656 MB / 0.7012 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.374e-05/0.3706, allocations: 63.97 kB / 0.8812 GB, free: 8.582 MB / 0.7012 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002035/0.3726, allocations: 1.056 MB / 0.8822 GB, free: 7.508 MB / 0.7012 GB Notification: Performance of collectPreVariables (initialization): time 0.0003139/0.373, allocations: 37.7 kB / 0.8822 GB, free: 7.465 MB / 0.7012 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006465/0.3736, allocations: 496.7 kB / 0.8827 GB, free: 6.973 MB / 0.7012 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003676/0.374, allocations: 236.5 kB / 0.8829 GB, free: 6.738 MB / 0.7012 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000965/0.375, allocations: 286 kB / 0.8832 GB, free: 6.453 MB / 0.7012 GB Notification: Performance of setup shared object (initialization): time 0.0001376/0.3751, allocations: 337.9 kB / 0.8835 GB, free: 6.117 MB / 0.7012 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.008118/0.3833, allocations: 2.45 MB / 0.8859 GB, free: 3.664 MB / 0.7012 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.008114/0.3914, allocations: 2.569 MB / 0.8884 GB, free: 1.055 MB / 0.7012 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01198/0.4034, allocations: 3.452 MB / 0.8918 GB, free: 13.6 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.532e-06/0.4034, allocations: 0 / 0.8918 GB, free: 13.6 MB / 0.7169 GB Notification: Performance of matching and sorting (n=82) (initialization): time 0.02188/0.4253, allocations: 6.524 MB / 0.8982 GB, free: 7.055 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 3.1e-05/0.4254, allocations: 8 kB / 0.8982 GB, free: 7.047 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.01719/0.4426, allocations: 5.143 MB / 0.9032 GB, free: 1.902 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.08703/0.5296, allocations: 10.98 MB / 0.9139 GB, free: 6.906 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003237/0.5329, allocations: 479.3 kB / 0.9144 GB, free: 6.438 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007099/0.54, allocations: 3.122 MB / 0.9174 GB, free: 3.285 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004039/0.5441, allocations: 0.5104 MB / 0.9179 GB, free: 2.773 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003275/0.5445, allocations: 75.92 kB / 0.918 GB, free: 2.699 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.5033/1.048, allocations: 2.775 MB / 0.9207 GB, free: 89.83 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.009598/1.057, allocations: 2.548 MB / 0.9232 GB, free: 89.74 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.01473/1.072, allocations: 3.427 MB / 0.9266 GB, free: 89.33 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.131e-05/1.072, allocations: 0 / 0.9266 GB, free: 89.33 MB / 0.7325 GB Notification: Performance of matching and sorting (n=82) (initialization_lambda0): time 0.0207/1.093, allocations: 5.531 MB / 0.932 GB, free: 88.04 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 1.84e-05/1.093, allocations: 7.219 kB / 0.932 GB, free: 88.04 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.01598/1.109, allocations: 4.772 MB / 0.9366 GB, free: 86.86 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002498/1.112, allocations: 0.8126 MB / 0.9374 GB, free: 86.71 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004097/1.116, allocations: 0.5892 MB / 0.938 GB, free: 86.69 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.009438/1.125, allocations: 6.613 MB / 0.9445 GB, free: 83.14 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003945/1.129, allocations: 0.5009 MB / 0.9449 GB, free: 83.1 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002607/1.129, allocations: 73.25 kB / 0.945 GB, free: 83.09 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (29): * Single equations (assignments): 28 * 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 {(11,43)} Notification: Performance of prepare postOptimizeDAE: time 0.0003592/1.13, allocations: 208.6 kB / 0.9452 GB, free: 82.89 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002625/1.13, allocations: 110.8 kB / 0.9453 GB, free: 82.83 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01444/1.144, allocations: 4.942 MB / 0.9501 GB, free: 81.25 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.826e-05/1.145, allocations: 12.38 kB / 0.9502 GB, free: 81.25 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.547e-06/1.145, allocations: 3.938 kB / 0.9502 GB, free: 81.24 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.859e-06/1.145, allocations: 3.984 kB / 0.9502 GB, free: 81.24 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01547/1.16, allocations: 6.734 MB / 0.9567 GB, free: 77.06 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 0.03028/1.19, allocations: 5.98 MB / 0.9626 GB, free: 74.4 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001541/1.192, allocations: 243.6 kB / 0.9628 GB, free: 74.16 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.04164/1.234, allocations: 7.156 MB / 0.9698 GB, free: 67.02 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002725/1.234, allocations: 39.95 kB / 0.9698 GB, free: 66.98 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005553/1.239, allocations: 3.154 MB / 0.9729 GB, free: 63.79 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.226e-06/1.239, allocations: 3.938 kB / 0.9729 GB, free: 63.79 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03016/1.27, allocations: 6.257 MB / 0.979 GB, free: 57.5 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001005/1.271, allocations: 0.4884 MB / 0.9795 GB, free: 57 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002/1.271, allocations: 18.34 kB / 0.9795 GB, free: 56.99 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002151/1.273, allocations: 287.6 kB / 0.9798 GB, free: 56.71 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001029/1.273, allocations: 44.59 kB / 0.9798 GB, free: 56.66 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001253/1.273, allocations: 47.95 kB / 0.9799 GB, free: 56.62 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0008112/1.274, allocations: 0.7644 MB / 0.9806 GB, free: 55.84 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.51e-07/1.274, allocations: 0 / 0.9806 GB, free: 55.84 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.001858/1.276, allocations: 0.7202 MB / 0.9813 GB, free: 55.16 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (17): * Single equations (assignments): 16 * 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 {(11,51)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0003292/1.276, allocations: 175 kB / 0.9815 GB, free: 54.99 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.01854/1.295, allocations: 6.647 MB / 0.988 GB, free: 48.34 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 6.542e-06/1.295, allocations: 3.938 kB / 0.988 GB, free: 48.33 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.004678/1.3, allocations: 1.692 MB / 0.9897 GB, free: 46.64 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001211/1.301, allocations: 280.9 kB / 0.9899 GB, free: 46.38 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00642/1.307, allocations: 3.448 MB / 0.9933 GB, free: 42.91 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005104/1.308, allocations: 1.302 MB / 0.9946 GB, free: 41.58 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.002257/1.31, allocations: 0.7822 MB / 0.9953 GB, free: 40.8 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000579/1.311, allocations: 119.3 kB / 0.9954 GB, free: 40.68 MB / 0.7325 GB Notification: Performance of SimCode: time 8.02e-07/1.311, allocations: 0 / 0.9954 GB, free: 40.68 MB / 0.7325 GB Notification: Performance of Templates: time 0.07009/1.381, allocations: 63.33 MB / 1.057 GB, free: 9.496 MB / 0.7637 GB make -j1 -f Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass.makefile (rm -f Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass.pipe >> ../files/Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass.sim & ./Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.HeatTransfer.Windows.BaseClasses.Examples.CenterOfGlass.pipe 2>&1)