Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.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 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/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 ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: translateModel(IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal") translateModel(IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.007303/0.007303, allocations: 101.7 kB / 15.73 MB, free: 5.59 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001401/0.001401, allocations: 191.7 kB / 16.67 MB, free: 5.523 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.406/1.406, allocations: 222.9 MB / 240.4 MB, free: 15.14 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.7745/0.7745, allocations: 135.1 MB / 425.7 MB, free: 4.109 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001178/0.001178, allocations: 72.25 kB / 0.5856 GB, free: 21.66 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1601/0.1613, allocations: 80.92 MB / 0.6646 GB, free: 5.812 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal): time 0.05606/0.2174, allocations: 60.71 MB / 0.7239 GB, free: 8.891 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.0211/0.2385, allocations: 14.63 MB / 0.7382 GB, free: 10.22 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002086/0.2407, allocations: 63.62 kB / 0.7383 GB, free: 10.16 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.001819/0.2425, allocations: 0.7375 MB / 0.739 GB, free: 9.418 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.005642/0.2482, allocations: 2.356 MB / 0.7413 GB, free: 7.055 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.004107/0.2523, allocations: 1.69 MB / 0.743 GB, free: 5.371 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.005121/0.2574, allocations: 4.036 MB / 0.7469 GB, free: 1.328 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001938/0.2594, allocations: 1.286 MB / 0.7481 GB, free: 12 kB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.4297/0.6891, allocations: 1.611 MB / 0.7497 GB, free: 10.53 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002942/0.692, allocations: 1.083 MB / 0.7508 GB, free: 10.52 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.0004168/0.6925, allocations: 133.6 kB / 0.7509 GB, free: 10.52 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00442/0.6969, allocations: 1.711 MB / 0.7526 GB, free: 10.52 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.0004306/0.6974, allocations: 341.5 kB / 0.7529 GB, free: 10.46 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.001276/0.6986, allocations: 0.7831 MB / 0.7537 GB, free: 10.25 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.006782/0.7054, allocations: 2.719 MB / 0.7563 GB, free: 10.02 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 6.592e-06/0.7055, allocations: 4.094 kB / 0.7563 GB, free: 10.02 MB / 0.5762 GB Notification: Performance of FrontEnd: time 3.206e-06/0.7055, allocations: 1.781 kB / 0.7563 GB, free: 10.02 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 3.812e-05/0.7055, allocations: 3.938 kB / 0.7563 GB, free: 10.02 MB / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 215 * Number of variables: 215 Notification: Performance of Generate backend data structure: time 0.004183/0.7097, allocations: 1.844 MB / 0.7581 GB, free: 9.055 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 5.382e-05/0.7098, allocations: 12.08 kB / 0.7581 GB, free: 9.055 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007202/0.7105, allocations: 163.9 kB / 0.7583 GB, free: 8.98 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003181/0.7137, allocations: 1.318 MB / 0.7596 GB, free: 8.586 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001098/0.7138, allocations: 64.38 kB / 0.7596 GB, free: 8.586 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002198/0.7141, allocations: 85.64 kB / 0.7597 GB, free: 8.586 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001905/0.716, allocations: 0.9564 MB / 0.7607 GB, free: 8.422 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.444e-05/0.716, allocations: 6.438 kB / 0.7607 GB, free: 8.422 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.959e-05/0.7161, allocations: 34.92 kB / 0.7607 GB, free: 8.422 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.745e-05/0.7162, allocations: 27.11 kB / 0.7607 GB, free: 8.422 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00151/0.7177, allocations: 0.6641 MB / 0.7614 GB, free: 8.414 MB / 0.5762 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 0.006155/0.7238, allocations: 5.222 MB / 0.7665 GB, free: 5.359 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007591/0.7246, allocations: 405.6 kB / 0.7669 GB, free: 5.328 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003719/0.725, allocations: 238.2 kB / 0.7671 GB, free: 5.32 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001056/0.7261, allocations: 1.586 MB / 0.7686 GB, free: 3.539 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.692e-05/0.7261, allocations: 50.41 kB / 0.7687 GB, free: 3.496 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=53): time 4.248e-06/0.7261, allocations: 0 / 0.7687 GB, free: 3.496 MB / 0.5762 GB Notification: Performance of matching and sorting (n=53): time 0.00247/0.7286, allocations: 0.9378 MB / 0.7696 GB, free: 3.285 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.661e-05/0.7286, allocations: 56.31 kB / 0.7697 GB, free: 3.223 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001576/0.7302, allocations: 0.9975 MB / 0.7706 GB, free: 3.07 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 6.01e-05/0.7303, allocations: 36.45 kB / 0.7707 GB, free: 3.039 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004575/0.7308, allocations: 0.587 MB / 0.7712 GB, free: 2.805 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002187/0.731, allocations: 188.3 kB / 0.7714 GB, free: 2.684 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002422/0.7312, allocations: 142.5 kB / 0.7716 GB, free: 2.66 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 7.277e-05/0.7313, allocations: 331.4 kB / 0.7719 GB, free: 2.355 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003408/0.7317, allocations: 207.3 kB / 0.7721 GB, free: 2.344 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004523/0.7321, allocations: 400.6 kB / 0.7725 GB, free: 2.125 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007848/0.7329, allocations: 0.6261 MB / 0.7731 GB, free: 1.895 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.651e-06/0.7329, allocations: 1.75 kB / 0.7731 GB, free: 1.895 MB / 0.5762 GB Notification: Performance of matching and sorting (n=84) (initialization): time 0.001655/0.7346, allocations: 0.8235 MB / 0.7739 GB, free: 1.777 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 2.265e-05/0.7346, allocations: 9.75 kB / 0.7739 GB, free: 1.777 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.592e-05/0.7346, allocations: 13.08 kB / 0.7739 GB, free: 1.777 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005668/0.7352, allocations: 115.5 kB / 0.774 GB, free: 1.762 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000431/0.7357, allocations: 140 kB / 0.7741 GB, free: 1.762 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.000512/0.7362, allocations: 0.5947 MB / 0.7747 GB, free: 17.24 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008561/0.737, allocations: 79.14 kB / 0.7748 GB, free: 17.2 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.968e-05/0.7371, allocations: 36.91 kB / 0.7748 GB, free: 17.2 MB / 0.5919 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0009388/0.7381, allocations: 434.8 kB / 0.7752 GB, free: 17.12 MB / 0.5919 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0005606/0.7387, allocations: 399.5 kB / 0.7756 GB, free: 16.9 MB / 0.5919 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.000963/0.7396, allocations: 0.6263 MB / 0.7762 GB, free: 16.67 MB / 0.5919 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.922e-06/0.7397, allocations: 2.281 kB / 0.7762 GB, free: 16.67 MB / 0.5919 GB Notification: Performance of matching and sorting (n=84) (initialization_lambda0): time 0.001897/0.7416, allocations: 0.8254 MB / 0.777 GB, free: 16.55 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 2.149e-05/0.7416, allocations: 11.81 kB / 0.7771 GB, free: 16.55 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.028e-05/0.7416, allocations: 8.719 kB / 0.7771 GB, free: 16.55 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004593/0.7421, allocations: 104.9 kB / 0.7772 GB, free: 16.54 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004062/0.7425, allocations: 137.8 kB / 0.7773 GB, free: 16.54 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0004104/0.7429, allocations: 0.5957 MB / 0.7779 GB, free: 16.02 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006796/0.7436, allocations: 56.45 kB / 0.7779 GB, free: 16 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.065e-05/0.7437, allocations: 46.47 kB / 0.778 GB, free: 16 MB / 0.5919 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 26 * 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 (79): * Single equations (assignments): 76 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * 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 {(1,3)} Notification: Performance of prepare postOptimizeDAE: time 0.0002483/0.7439, allocations: 218.9 kB / 0.7782 GB, free: 15.81 MB / 0.5919 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002094/0.7442, allocations: 117.9 kB / 0.7783 GB, free: 15.75 MB / 0.5919 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001956/0.7461, allocations: 1.066 MB / 0.7793 GB, free: 15.64 MB / 0.5919 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.595e-05/0.7462, allocations: 15.58 kB / 0.7793 GB, free: 15.63 MB / 0.5919 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.811e-06/0.7462, allocations: 0 / 0.7793 GB, free: 15.63 MB / 0.5919 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001202/0.7474, allocations: 0.8029 MB / 0.7801 GB, free: 15.45 MB / 0.5919 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003021/0.7504, allocations: 2.097 MB / 0.7822 GB, free: 15.07 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.348e-05/0.7504, allocations: 5.344 kB / 0.7822 GB, free: 15.07 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003758/0.7508, allocations: 98.11 kB / 0.7823 GB, free: 15.07 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002826/0.7511, allocations: 63.17 kB / 0.7823 GB, free: 15.07 MB / 0.5919 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.348e-05/0.7512, allocations: 21.56 kB / 0.7824 GB, free: 15.07 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0003905/0.7516, allocations: 0.5962 MB / 0.7829 GB, free: 14.54 MB / 0.5919 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.216e-06/0.7516, allocations: 1.5 kB / 0.7829 GB, free: 14.54 MB / 0.5919 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002188/0.7538, allocations: 1.317 MB / 0.7842 GB, free: 14.29 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004593/0.7542, allocations: 297.7 kB / 0.7845 GB, free: 14.12 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001301/0.7544, allocations: 13.38 kB / 0.7845 GB, free: 14.12 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00052/0.7549, allocations: 27.48 kB / 0.7846 GB, free: 14.12 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001028/0.755, allocations: 56.06 kB / 0.7846 GB, free: 14.11 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.019e-05/0.7551, allocations: 31.86 kB / 0.7846 GB, free: 14.11 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.0009175/0.756, allocations: 0.6887 MB / 0.7853 GB, free: 14 MB / 0.5919 GB Notification: Performance of sort global known variables: time 1.2e-07/0.756, allocations: 0 / 0.7853 GB, free: 14 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.002407/0.7584, allocations: 0.7452 MB / 0.786 GB, free: 13.88 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 4 (pip.del.x,pip.timDel.x,pip.vol_b.dynBal.U,pip.vol_a.dynBal.U) * 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 (65): * Single equations (assignments): 50 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 14 * 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 {(1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001539/0.76, allocations: 0.589 MB / 0.7866 GB, free: 13.69 MB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.002149/0.7621, allocations: 1.056 MB / 0.7876 GB, free: 13.54 MB / 0.5919 GB Notification: Performance of simCode: created event and clocks part: time 3.957e-06/0.7621, allocations: 0.7812 kB / 0.7876 GB, free: 13.54 MB / 0.5919 GB Notification: Performance of simCode: created simulation system equations: time 0.0005879/0.7627, allocations: 422.7 kB / 0.788 GB, free: 13.48 MB / 0.5919 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002245/0.765, allocations: 0.5999 MB / 0.7886 GB, free: 13.38 MB / 0.5919 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003175/0.7682, allocations: 2.132 MB / 0.7907 GB, free: 12.44 MB / 0.5919 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006395/0.7688, allocations: 1.132 MB / 0.7918 GB, free: 11.72 MB / 0.5919 GB Notification: Performance of simCode: alias equations: time 0.0009551/0.7698, allocations: 312.1 kB / 0.7921 GB, free: 11.65 MB / 0.5919 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002179/0.77, allocations: 110.8 kB / 0.7922 GB, free: 11.64 MB / 0.5919 GB Notification: Performance of SimCode: time 4.61e-07/0.77, allocations: 0 / 0.7922 GB, free: 11.64 MB / 0.5919 GB Notification: Performance of Templates: time 0.04727/0.8173, allocations: 28.15 MB / 0.8197 GB, free: 10.96 MB / 0.6075 GB make -j1 -f IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.makefile (rm -f IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.sim & ./IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_dev_IDEAS.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.pipe 2>&1)