Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction.conf.json
loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.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 7.0.3 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo)
Running command: translateModel(Buildings.Fluid.Sensors.Examples.MassFraction,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction")
translateModel(Buildings.Fluid.Sensors.Examples.MassFraction,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction")
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.433/1.433, allocations: 255.9 MB / 271.2 MB, free: 8.898 MB / 218.7 MB
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001054/0.001054, allocations: 178.5 kB / 330.8 MB, free: 476 kB / 250.7 MB
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.589/1.589, allocations: 225.7 MB / 0.6016 GB, free: 15.91 MB / 442.7 MB
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009794/0.0009793, allocations: 99.55 kB / 0.709 GB, free: 5.402 MB / 0.5261 GB
Notification: Performance of FrontEnd - loaded program: time 0.0003925/0.0003925, allocations: 12.81 kB / 0.8261 GB, free: 123.7 MB / 0.5886 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.246/0.2464, allocations: 109.2 MB / 0.9328 GB, free: 24.13 MB / 0.5886 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.Sensors.Examples.MassFraction): time 0.7322/0.9786, allocations: 178 MB / 1.107 GB, free: 1.387 MB / 0.6667 GB
Notification: Performance of NFInst.instExpressions: time 0.009942/0.9886, allocations: 6.649 MB / 1.113 GB, free: 11.14 MB / 0.6823 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001197/0.9899, allocations: 24.59 kB / 1.113 GB, free: 11.13 MB / 0.6823 GB
Notification: Performance of NFTyping.typeComponents: time 0.001303/0.9912, allocations: 342.7 kB / 1.113 GB, free: 10.86 MB / 0.6823 GB
Notification: Performance of NFTyping.typeBindings: time 0.004294/0.9955, allocations: 1.264 MB / 1.115 GB, free: 9.891 MB / 0.6823 GB
Notification: Performance of NFTyping.typeClassSections: time 0.002653/0.9981, allocations: 0.6881 MB / 1.115 GB, free: 9.383 MB / 0.6823 GB
Notification: Performance of NFFlatten.flatten: time 0.004314/1.002, allocations: 2.813 MB / 1.118 GB, free: 7.863 MB / 0.6823 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.001192/1.004, allocations: 0.5491 MB / 1.119 GB, free: 7.531 MB / 0.6823 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.004444/1.008, allocations: 0.9873 MB / 1.12 GB, free: 6.969 MB / 0.6823 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.001872/1.01, allocations: 0.5949 MB / 1.12 GB, free: 6.641 MB / 0.6823 GB
Notification: Performance of NFPackage.collectConstants: time 0.0002231/1.01, allocations: 28.53 kB / 1.12 GB, free: 6.641 MB / 0.6823 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.003992/1.014, allocations: 1.527 MB / 1.122 GB, free: 5.785 MB / 0.6823 GB
Notification: Performance of NFScalarize.scalarize: time 0.0005522/1.015, allocations: 252.8 kB / 1.122 GB, free: 5.625 MB / 0.6823 GB
Notification: Performance of NFVerifyModel.verify: time 0.001272/1.016, allocations: 398 kB / 1.122 GB, free: 5.379 MB / 0.6823 GB
Notification: Performance of NFConvertDAE.convert: time 0.003323/1.019, allocations: 1.52 MB / 1.124 GB, free: 4.426 MB / 0.6823 GB
Notification: Performance of FrontEnd - DAE generated: time 6.953e-06/1.019, allocations: 0 / 1.124 GB, free: 4.426 MB / 0.6823 GB
Notification: Performance of FrontEnd: time 1.703e-06/1.019, allocations: 3.938 kB / 1.124 GB, free: 4.422 MB / 0.6823 GB
Notification: Performance of Transformations before backend: time 3.686e-05/1.02, allocations: 0 / 1.124 GB, free: 4.422 MB / 0.6823 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 131
 * Number of variables: 131
Notification: Performance of Generate backend data structure: time 0.001956/1.021, allocations: 0.9458 MB / 1.125 GB, free: 3.637 MB / 0.6823 GB
Notification: Performance of prepare preOptimizeDAE: time 4.44e-05/1.022, allocations: 15.11 kB / 1.125 GB, free: 3.633 MB / 0.6823 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001382/1.023, allocations: 208.4 kB / 1.125 GB, free: 3.535 MB / 0.6823 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001105/1.024, allocations: 0.575 MB / 1.125 GB, free: 3.062 MB / 0.6823 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.166e-05/1.024, allocations: 42 kB / 1.126 GB, free: 3.047 MB / 0.6823 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001177/1.024, allocations: 55.5 kB / 1.126 GB, free: 3.027 MB / 0.6823 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001145/1.025, allocations: 0.6227 MB / 1.126 GB, free: 2.648 MB / 0.6823 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.173e-05/1.025, allocations: 3.938 kB / 1.126 GB, free: 2.645 MB / 0.6823 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.537e-05/1.025, allocations: 21.84 kB / 1.126 GB, free: 2.629 MB / 0.6823 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.267e-05/1.025, allocations: 20.62 kB / 1.126 GB, free: 2.625 MB / 0.6823 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008358/1.026, allocations: 0.4931 MB / 1.127 GB, free: 2.383 MB / 0.6823 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 0.003383/1.03, allocations: 2.406 MB / 1.129 GB, free: 276 kB / 0.6823 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0005385/1.03, allocations: 346.6 kB / 1.129 GB, free: 88 kB / 0.6823 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0002912/1.031, allocations: 207.8 kB / 1.13 GB, free: 15.98 MB / 0.698 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0006056/1.031, allocations: 321.2 kB / 1.13 GB, free: 15.67 MB / 0.698 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.809e-05/1.031, allocations: 45.42 kB / 1.13 GB, free: 15.62 MB / 0.698 GB
Notification: Performance of pre-optimization done (n=36): time 1.823e-06/1.031, allocations: 0 / 1.13 GB, free: 15.62 MB / 0.698 GB
Notification: Performance of matching and sorting (n=36): time 0.001108/1.032, allocations: 0.5309 MB / 1.13 GB, free: 15.35 MB / 0.698 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 4.47e-05/1.032, allocations: 57.97 kB / 1.131 GB, free: 15.29 MB / 0.698 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006028/1.033, allocations: 0.4971 MB / 1.131 GB, free: 14.98 MB / 0.698 GB
Notification: Performance of collectPreVariables (initialization): time 4.591e-05/1.033, allocations: 36.83 kB / 1.131 GB, free: 14.94 MB / 0.698 GB
Notification: Performance of collectInitialEqns (initialization): time 0.000228/1.033, allocations: 312.1 kB / 1.131 GB, free: 14.66 MB / 0.698 GB
Notification: Performance of collectInitialBindings (initialization): time 0.00013/1.033, allocations: 126.7 kB / 1.131 GB, free: 14.56 MB / 0.698 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 2.057e-05/1.033, allocations: 8 kB / 1.131 GB, free: 14.55 MB / 0.698 GB
Notification: Performance of setup shared object (initialization): time 0.0001662/1.034, allocations: 364.3 kB / 1.132 GB, free: 14.2 MB / 0.698 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002238/1.034, allocations: 152.4 kB / 1.132 GB, free: 14.12 MB / 0.698 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002989/1.034, allocations: 248.5 kB / 1.132 GB, free: 13.93 MB / 0.698 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0005197/1.035, allocations: 414.2 kB / 1.133 GB, free: 13.66 MB / 0.698 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.015e-06/1.035, allocations: 0 / 1.133 GB, free: 13.66 MB / 0.698 GB
Notification: Performance of matching and sorting (n=49) (initialization): time 0.0007262/1.035, allocations: 472.1 kB / 1.133 GB, free: 13.42 MB / 0.698 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0001177/1.036, allocations: 165.1 kB / 1.133 GB, free: 13.23 MB / 0.698 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.604e-06/1.036, allocations: 2.906 kB / 1.133 GB, free: 13.23 MB / 0.698 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.949e-05/1.036, allocations: 5.781 kB / 1.133 GB, free: 13.23 MB / 0.698 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005659/1.036, allocations: 95.98 kB / 1.133 GB, free: 13.21 MB / 0.698 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.000394/1.037, allocations: 0.6054 MB / 1.134 GB, free: 12.6 MB / 0.698 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005981/1.037, allocations: 63.19 kB / 1.134 GB, free: 12.57 MB / 0.698 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.175e-05/1.037, allocations: 17.81 kB / 1.134 GB, free: 12.56 MB / 0.698 GB
Notification: Performance of prepare postOptimizeDAE: time 1.048e-05/1.037, allocations: 2.094 kB / 1.134 GB, free: 12.56 MB / 0.698 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0006323/1.038, allocations: 407.5 kB / 1.134 GB, free: 12.36 MB / 0.698 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.637e-06/1.038, allocations: 10.94 kB / 1.134 GB, free: 12.36 MB / 0.698 GB
Notification: Performance of postOpt tearingSystem (initialization): time 8.326e-06/1.038, allocations: 6.828 kB / 1.134 GB, free: 12.35 MB / 0.698 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003389/1.038, allocations: 83.06 kB / 1.134 GB, free: 12.34 MB / 0.698 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.432e-06/1.038, allocations: 2.781 kB / 1.134 GB, free: 12.34 MB / 0.698 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005784/1.039, allocations: 70.83 kB / 1.135 GB, free: 12.3 MB / 0.698 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.928e-05/1.039, allocations: 17.38 kB / 1.135 GB, free: 12.29 MB / 0.698 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 10
 * 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 (49):
 * Single equations (assignments): 48
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 1
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 0 systems
 * Non-linear Jacobian (size): 1 system
   {1}
 * Without analytic Jacobian (size): 0 systems
Notification: Performance of prepare postOptimizeDAE: time 0.0004932/1.039, allocations: 307.8 kB / 1.135 GB, free: 12.03 MB / 0.698 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001435/1.04, allocations: 61.91 kB / 1.135 GB, free: 12 MB / 0.698 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0008121/1.04, allocations: 436.7 kB / 1.135 GB, free: 11.73 MB / 0.698 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.553e-06/1.04, allocations: 2.875 kB / 1.135 GB, free: 11.73 MB / 0.698 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 6.042e-06/1.04, allocations: 0 / 1.135 GB, free: 11.73 MB / 0.698 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.000737/1.041, allocations: 0.6513 MB / 1.136 GB, free: 11.15 MB / 0.698 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002089/1.043, allocations: 1.2 MB / 1.137 GB, free: 10.26 MB / 0.698 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.748e-06/1.043, allocations: 2.875 kB / 1.137 GB, free: 10.26 MB / 0.698 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004798/1.044, allocations: 87.08 kB / 1.137 GB, free: 10.25 MB / 0.698 GB
Notification: Performance of postOpt tearingSystem (simulation): time 1.015e-05/1.044, allocations: 6.156 kB / 1.137 GB, free: 10.25 MB / 0.698 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.983e-05/1.044, allocations: 10.53 kB / 1.137 GB, free: 10.24 MB / 0.698 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0003672/1.044, allocations: 0.5968 MB / 1.138 GB, free: 9.637 MB / 0.698 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.883e-06/1.044, allocations: 4.062 kB / 1.138 GB, free: 9.633 MB / 0.698 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009575/1.045, allocations: 0.7343 MB / 1.139 GB, free: 9.145 MB / 0.698 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0003052/1.046, allocations: 186.3 kB / 1.139 GB, free: 8.977 MB / 0.698 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001235/1.046, allocations: 12.78 kB / 1.139 GB, free: 8.969 MB / 0.698 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005284/1.046, allocations: 56.36 kB / 1.139 GB, free: 8.938 MB / 0.698 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 5.532e-05/1.046, allocations: 18.78 kB / 1.139 GB, free: 8.93 MB / 0.698 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.442e-05/1.046, allocations: 15.34 kB / 1.139 GB, free: 8.926 MB / 0.698 GB
Notification: Performance of sorting global known variables: time 0.0004463/1.047, allocations: 357 kB / 1.139 GB, free: 8.711 MB / 0.698 GB
Notification: Performance of sort global known variables: time 1.31e-07/1.047, allocations: 0 / 1.139 GB, free: 8.711 MB / 0.698 GB
Notification: Performance of remove unused functions: time 0.001241/1.048, allocations: 348.2 kB / 1.139 GB, free: 8.645 MB / 0.698 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 8
 * Number of states: 4 (vol.dynBal.U,vol.dynBal.m,vol.dynBal.mXi[1],senMasFra1.X)
 * 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 (35):
 * Single equations (assignments): 34
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 1
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 0 systems
 * Non-linear Jacobian (size): 1 system
   {1}
 * Without analytic Jacobian (size): 0 systems
Notification: Performance of Backend phase and start with SimCode phase: time 0.0006779/1.049, allocations: 223.4 kB / 1.14 GB, free: 8.488 MB / 0.698 GB
Notification: Performance of simCode: created initialization part: time 0.001405/1.05, allocations: 0.5691 MB / 1.14 GB, free: 8.238 MB / 0.698 GB
Notification: Performance of simCode: created event and clocks part: time 5.19e-06/1.05, allocations: 1.125 kB / 1.14 GB, free: 8.238 MB / 0.698 GB
Notification: Performance of simCode: created simulation system equations: time 0.0003385/1.051, allocations: 187.2 kB / 1.14 GB, free: 8.156 MB / 0.698 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001874/1.052, allocations: 366.2 kB / 1.141 GB, free: 7.973 MB / 0.698 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00274/1.055, allocations: 1.659 MB / 1.142 GB, free: 6.75 MB / 0.698 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007749/1.056, allocations: 0.9429 MB / 1.143 GB, free: 5.934 MB / 0.698 GB
Notification: Performance of simCode: alias equations: time 0.001002/1.057, allocations: 201.8 kB / 1.144 GB, free: 5.844 MB / 0.698 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001948/1.057, allocations: 49.36 kB / 1.144 GB, free: 5.832 MB / 0.698 GB
Notification: Performance of SimCode: time 2.044e-06/1.057, allocations: 0 / 1.144 GB, free: 5.832 MB / 0.698 GB
Notification: Performance of Templates: time 0.02336/1.081, allocations: 11.47 MB / 1.155 GB, free: 12.97 MB / 0.7136 GB
make -j1 -f Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction.makefile
(rm -f Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction.sim & ./Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Fluid.Sensors.Examples.MassFraction.pipe 2>&1)