Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildingSystems_BuildingSystems.Electrical.AC.OnePhase.Examples.GeneratorLoadGrid.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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-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: "" <> buildModelFMU(BuildingSystems.Electrical.AC.OnePhase.Examples.GeneratorLoadGrid,fileNamePrefix="BuildingSystems_BuildingSystems_Electrical_AC_OnePhase_Examples_GeneratorLoadGrid",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Electrical.AC.OnePhase.Examples.GeneratorLoadGrid,fileNamePrefix="BuildingSystems_BuildingSystems_Electrical_AC_OnePhase_Examples_GeneratorLoadGrid",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009296/0.0009298, allocations: 90.98 kB / 15.36 MB, free: 0.7383 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.005525/0.005525, allocations: 170.6 kB / 16.26 MB, free: 6.613 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.281/1.281, allocations: 223.3 MB / 240.3 MB, free: 5.324 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.00175/0.00175, allocations: 278.5 kB / 291.7 MB, free: 1.855 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9157/0.9157, allocations: 169.5 MB / 0.5004 GB, free: 14.09 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0004259/0.000426, allocations: 13.97 kB / 0.5988 GB, free: 28.15 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1534/0.1539, allocations: 88.55 MB / 0.6852 GB, free: 14.95 MB / 494.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Electrical.AC.OnePhase.Examples.GeneratorLoadGrid): time 0.002934/0.1568, allocations: 2.566 MB / 0.6877 GB, free: 12.37 MB / 494.1 MB Notification: Performance of NFInst.instExpressions: time 0.002223/0.1591, allocations: 1.629 MB / 0.6893 GB, free: 10.73 MB / 494.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 8.538e-05/0.1592, allocations: 5.562 kB / 0.6893 GB, free: 10.73 MB / 494.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0001388/0.1593, allocations: 31.72 kB / 0.6894 GB, free: 10.7 MB / 494.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0003703/0.1597, allocations: 167.9 kB / 0.6895 GB, free: 10.54 MB / 494.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0004161/0.1601, allocations: 218.2 kB / 0.6897 GB, free: 10.32 MB / 494.1 MB Notification: Performance of NFFlatten.flatten: time 0.0004064/0.1605, allocations: 434.8 kB / 0.6902 GB, free: 9.898 MB / 494.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0006938/0.1612, allocations: 386.4 kB / 0.6905 GB, free: 9.508 MB / 494.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0001642/0.1614, allocations: 96.5 kB / 0.6906 GB, free: 9.414 MB / 494.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0002409/0.1617, allocations: 143.4 kB / 0.6907 GB, free: 9.273 MB / 494.1 MB Notification: Performance of NFPackage.collectConstants: time 2.459e-05/0.1617, allocations: 8.719 kB / 0.6908 GB, free: 9.266 MB / 494.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0004092/0.1621, allocations: 307.4 kB / 0.6911 GB, free: 8.965 MB / 494.1 MB Notification: Performance of NFScalarize.scalarize: time 8.198e-05/0.1622, allocations: 72.64 kB / 0.6911 GB, free: 8.895 MB / 494.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0001173/0.1623, allocations: 133 kB / 0.6912 GB, free: 8.758 MB / 494.1 MB Notification: Performance of NFConvertDAE.convert: time 0.000423/0.1628, allocations: 415.2 kB / 0.6916 GB, free: 8.352 MB / 494.1 MB Notification: Performance of FrontEnd - DAE generated: time 3.226e-06/0.1628, allocations: 4 kB / 0.6916 GB, free: 8.348 MB / 494.1 MB Notification: Performance of FrontEnd: time 1.743e-06/0.1628, allocations: 2.062 kB / 0.6916 GB, free: 8.348 MB / 494.1 MB Notification: Performance of Transformations before backend: time 4.368e-06/0.1628, allocations: 0 / 0.6916 GB, free: 8.348 MB / 494.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 53 * Number of variables: 53 Notification: Performance of Generate backend data structure: time 0.0007204/0.1635, allocations: 0.4991 MB / 0.6921 GB, free: 7.797 MB / 494.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.491e-05/0.1636, allocations: 8.031 kB / 0.6921 GB, free: 7.789 MB / 494.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.744e-05/0.1636, allocations: 54.73 kB / 0.6922 GB, free: 7.727 MB / 494.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0006555/0.1643, allocations: 92.55 kB / 0.6923 GB, free: 7.637 MB / 494.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0002876/0.1646, allocations: 261.8 kB / 0.6925 GB, free: 7.344 MB / 494.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.197e-05/0.1646, allocations: 8.75 kB / 0.6925 GB, free: 7.336 MB / 494.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 4.987e-05/0.1647, allocations: 24.36 kB / 0.6926 GB, free: 7.312 MB / 494.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0005803/0.1653, allocations: 382.4 kB / 0.6929 GB, free: 6.906 MB / 494.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.316e-05/0.1653, allocations: 3.938 kB / 0.6929 GB, free: 6.902 MB / 494.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.172e-05/0.1653, allocations: 11.98 kB / 0.6929 GB, free: 6.891 MB / 494.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.482e-05/0.1654, allocations: 28.31 kB / 0.693 GB, free: 6.859 MB / 494.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005919/0.166, allocations: 337.3 kB / 0.6933 GB, free: 6.531 MB / 494.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001669/0.1676, allocations: 1.724 MB / 0.695 GB, free: 4.672 MB / 494.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0006756/0.1683, allocations: 337.1 kB / 0.6953 GB, free: 4.324 MB / 494.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002577/0.1686, allocations: 157.6 kB / 0.6954 GB, free: 4.164 MB / 494.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0001284/0.1687, allocations: 89.09 kB / 0.6955 GB, free: 4.059 MB / 494.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.099e-05/0.1688, allocations: 30.56 kB / 0.6956 GB, free: 4.02 MB / 494.1 MB Notification: Performance of pre-optimization done (n=20): time 1.242e-06/0.1688, allocations: 0 / 0.6956 GB, free: 4.02 MB / 494.1 MB Notification: Performance of matching and sorting (n=21): time 0.001331/0.1701, allocations: 0.6246 MB / 0.6962 GB, free: 3.367 MB / 494.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.122e-05/0.1702, allocations: 77.11 kB / 0.6962 GB, free: 3.273 MB / 494.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001837/0.1704, allocations: 207.8 kB / 0.6964 GB, free: 3.059 MB / 494.1 MB Notification: Performance of collectPreVariables (initialization): time 2.423e-05/0.1704, allocations: 29.7 kB / 0.6965 GB, free: 3.023 MB / 494.1 MB Notification: Performance of collectInitialEqns (initialization): time 9.022e-05/0.1705, allocations: 163.8 kB / 0.6966 GB, free: 2.859 MB / 494.1 MB Notification: Performance of collectInitialBindings (initialization): time 5.19e-05/0.1705, allocations: 74.94 kB / 0.6967 GB, free: 2.785 MB / 494.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 4.909e-05/0.1706, allocations: 29.7 kB / 0.6967 GB, free: 2.75 MB / 494.1 MB Notification: Performance of setup shared object (initialization): time 9.936e-05/0.1707, allocations: 326.8 kB / 0.697 GB, free: 2.422 MB / 494.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002436/0.171, allocations: 132.5 kB / 0.6972 GB, free: 2.293 MB / 494.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002886/0.1713, allocations: 219.3 kB / 0.6974 GB, free: 2.043 MB / 494.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0005526/0.1718, allocations: 386.2 kB / 0.6977 GB, free: 1.633 MB / 494.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.452e-06/0.1718, allocations: 0 / 0.6977 GB, free: 1.633 MB / 494.1 MB Notification: Performance of matching and sorting (n=33) (initialization): time 0.0007615/0.1726, allocations: 434.1 kB / 0.6982 GB, free: 1.199 MB / 494.1 MB Notification: Performance of prepare postOptimizeDAE: time 9.044e-05/0.1727, allocations: 174.3 kB / 0.6983 GB, free: 0.9883 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.675e-06/0.1727, allocations: 4 kB / 0.6983 GB, free: 0.9844 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002093/0.1729, allocations: 36.83 kB / 0.6984 GB, free: 0.9453 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002999/0.1732, allocations: 79.88 kB / 0.6984 GB, free: 0.8672 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001253/0.1745, allocations: 1.489 MB / 0.6999 GB, free: 15.24 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002173/0.1747, allocations: 31.88 kB / 0.6999 GB, free: 15.21 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.582e-05/0.1748, allocations: 16 kB / 0.6999 GB, free: 15.19 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 6.161e-06/0.1748, allocations: 4 kB / 0.6999 GB, free: 15.19 MB / 0.4981 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0006689/0.1754, allocations: 372.3 kB / 0.7003 GB, free: 14.82 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.196e-06/0.1755, allocations: 4 kB / 0.7003 GB, free: 14.82 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001222/0.1756, allocations: 40.81 kB / 0.7003 GB, free: 14.77 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002611/0.1759, allocations: 76.17 kB / 0.7004 GB, free: 14.7 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001086/0.177, allocations: 1.485 MB / 0.7019 GB, free: 13.07 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001832/0.1771, allocations: 31.98 kB / 0.7019 GB, free: 13.04 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.007e-05/0.1772, allocations: 8 kB / 0.7019 GB, free: 13.04 MB / 0.4981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 12 * 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 (31): * Single equations (assignments): 30 * 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): 1 system {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0001749/0.1774, allocations: 243.2 kB / 0.7021 GB, free: 12.79 MB / 0.4981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.267e-05/0.1774, allocations: 19.72 kB / 0.7022 GB, free: 12.77 MB / 0.4981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0006931/0.1781, allocations: 364.1 kB / 0.7025 GB, free: 12.41 MB / 0.4981 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.579e-06/0.1781, allocations: 4 kB / 0.7025 GB, free: 12.4 MB / 0.4981 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.717e-06/0.1782, allocations: 3.938 kB / 0.7025 GB, free: 12.4 MB / 0.4981 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.28e-06/0.1782, allocations: 3.938 kB / 0.7025 GB, free: 12.39 MB / 0.4981 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001399/0.1796, allocations: 0.9734 MB / 0.7035 GB, free: 11.34 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.966e-06/0.1796, allocations: 4 kB / 0.7035 GB, free: 11.34 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002317/0.1798, allocations: 55.89 kB / 0.7035 GB, free: 11.29 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001172/0.1799, allocations: 36.83 kB / 0.7036 GB, free: 11.25 MB / 0.4981 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.141e-05/0.18, allocations: 12 kB / 0.7036 GB, free: 11.23 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001004/0.181, allocations: 1.406 MB / 0.7049 GB, free: 9.695 MB / 0.4981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.286e-06/0.181, allocations: 3.938 kB / 0.7049 GB, free: 9.691 MB / 0.4981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006907/0.1817, allocations: 0.551 MB / 0.7055 GB, free: 9.102 MB / 0.4981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001091/0.1818, allocations: 128.8 kB / 0.7056 GB, free: 8.957 MB / 0.4981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.299e-05/0.1819, allocations: 8 kB / 0.7056 GB, free: 8.949 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002389/0.1821, allocations: 19.97 kB / 0.7056 GB, free: 8.93 MB / 0.4981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.563e-05/0.1822, allocations: 23.92 kB / 0.7057 GB, free: 8.906 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.409e-05/0.1822, allocations: 15.98 kB / 0.7057 GB, free: 8.891 MB / 0.4981 GB Notification: Performance of sorting global known variables: time 0.0001293/0.1823, allocations: 151 kB / 0.7058 GB, free: 8.742 MB / 0.4981 GB Notification: Performance of sort global known variables: time 1.31e-07/0.1823, allocations: 0 / 0.7058 GB, free: 8.742 MB / 0.4981 GB Notification: Performance of remove unused functions: time 0.0005835/0.1829, allocations: 104 kB / 0.7059 GB, free: 8.641 MB / 0.4981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * 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 (21): * Single equations (assignments): 20 * 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): 1 system {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0009781/0.1839, allocations: 1.098 MB / 0.707 GB, free: 7.492 MB / 0.4981 GB Notification: Performance of simCode: created initialization part: time 0.001275/0.1852, allocations: 0.7478 MB / 0.7077 GB, free: 6.719 MB / 0.4981 GB Notification: Performance of simCode: created event and clocks part: time 2.695e-06/0.1852, allocations: 4 kB / 0.7077 GB, free: 6.715 MB / 0.4981 GB Notification: Performance of simCode: created simulation system equations: time 0.0003931/0.1856, allocations: 266.5 kB / 0.708 GB, free: 6.441 MB / 0.4981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005135/0.1861, allocations: 42.55 kB / 0.708 GB, free: 6.402 MB / 0.4981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003844/0.19, allocations: 3.105 MB / 0.711 GB, free: 3.117 MB / 0.4981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003322/0.1903, allocations: 0.7717 MB / 0.7118 GB, free: 2.32 MB / 0.4981 GB Notification: Performance of simCode: alias equations: time 0.0002474/0.1906, allocations: 85.86 kB / 0.7119 GB, free: 2.234 MB / 0.4981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001311/0.1907, allocations: 67.41 kB / 0.7119 GB, free: 2.168 MB / 0.4981 GB Notification: Performance of SimCode: time 1.193e-06/0.1908, allocations: 0 / 0.7119 GB, free: 2.168 MB / 0.4981 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.01796/0.2087, allocations: 5.186 MB / 0.717 GB, free: 13.19 MB / 0.5137 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002358/0.209, allocations: 244 kB / 0.7172 GB, free: 12.94 MB / 0.5137 GB Notification: Performance of buildModelFMU: Generate platform static: time 1.711/1.92, allocations: 0 / 0.7172 GB, free: 12.94 MB / 0.5137 GB (rm -f BuildingSystems_BuildingSystems.Electrical.AC.OnePhase.Examples.GeneratorLoadGrid.pipe ; mkfifo BuildingSystems_BuildingSystems.Electrical.AC.OnePhase.Examples.GeneratorLoadGrid.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Electrical.AC.OnePhase.Examples.GeneratorLoadGrid.pipe >> ../files/BuildingSystems_BuildingSystems.Electrical.AC.OnePhase.Examples.GeneratorLoadGrid.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_BuildingSystems_BuildingSystems_Electrical_AC_OnePhase_Examples_GeneratorLoadGrid_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 BuildingSystems_BuildingSystems_Electrical_AC_OnePhase_Examples_GeneratorLoadGrid.fmu > BuildingSystems_BuildingSystems.Electrical.AC.OnePhase.Examples.GeneratorLoadGrid.pipe 2>&1)