Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.CheckValve.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.Fluid.FixedResistances.Examples.CheckValve,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_FixedResistances_Examples_CheckValve",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(BuildingSystems.Fluid.FixedResistances.Examples.CheckValve,fileNamePrefix="BuildingSystems_BuildingSystems_Fluid_FixedResistances_Examples_CheckValve",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 0.0009359/0.0009359, allocations: 98.27 kB / 15.36 MB, free: 0.7344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.005709/0.005709, allocations: 169.9 kB / 16.27 MB, free: 6.652 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.309/1.309, allocations: 223.3 MB / 240.3 MB, free: 5.328 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.001709/0.001709, allocations: 274.1 kB / 291.7 MB, free: 1.863 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9053/0.9053, allocations: 169.5 MB / 0.5004 GB, free: 14.05 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0004019/0.0004019, allocations: 15.38 kB / 0.5988 GB, free: 28.11 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1652/0.1656, allocations: 88.54 MB / 0.6852 GB, free: 14.97 MB / 494.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.FixedResistances.Examples.CheckValve): time 0.02026/0.1859, allocations: 20.06 MB / 0.7048 GB, free: 10.87 MB / 0.4981 GB Notification: Performance of NFInst.instExpressions: time 0.006351/0.1923, allocations: 4.922 MB / 0.7096 GB, free: 5.934 MB / 0.4981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004939/0.1928, allocations: 19.81 kB / 0.7096 GB, free: 5.914 MB / 0.4981 GB Notification: Performance of NFTyping.typeComponents: time 0.0006605/0.1935, allocations: 218.7 kB / 0.7098 GB, free: 5.699 MB / 0.4981 GB Notification: Performance of NFTyping.typeBindings: time 0.001675/0.1952, allocations: 0.7464 MB / 0.7106 GB, free: 4.949 MB / 0.4981 GB Notification: Performance of NFTyping.typeClassSections: time 0.001572/0.1967, allocations: 0.6373 MB / 0.7112 GB, free: 4.32 MB / 0.4981 GB Notification: Performance of NFFlatten.flatten: time 0.001754/0.1985, allocations: 1.813 MB / 0.713 GB, free: 2.504 MB / 0.4981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004845/0.199, allocations: 380 kB / 0.7133 GB, free: 2.133 MB / 0.4981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0007674/0.1998, allocations: 0.5134 MB / 0.7138 GB, free: 1.617 MB / 0.4981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0005211/0.2003, allocations: 454 kB / 0.7143 GB, free: 1.172 MB / 0.4981 GB Notification: Performance of NFPackage.collectConstants: time 5.175e-05/0.2004, allocations: 20 kB / 0.7143 GB, free: 1.152 MB / 0.4981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0009756/0.2014, allocations: 0.5925 MB / 0.7149 GB, free: 0.5586 MB / 0.4981 GB Notification: Performance of NFScalarize.scalarize: time 0.000115/0.2015, allocations: 103.5 kB / 0.715 GB, free: 468 kB / 0.4981 GB Notification: Performance of NFVerifyModel.verify: time 0.0002486/0.2017, allocations: 292.2 kB / 0.7152 GB, free: 168 kB / 0.4981 GB Notification: Performance of NFConvertDAE.convert: time 0.0008822/0.2026, allocations: 0.8176 MB / 0.716 GB, free: 15.34 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 4.148e-06/0.2026, allocations: 3.938 kB / 0.716 GB, free: 15.34 MB / 0.5137 GB Notification: Performance of FrontEnd: time 1.283e-06/0.2027, allocations: 0 / 0.716 GB, free: 15.34 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 7.194e-06/0.2027, allocations: 0 / 0.716 GB, free: 15.34 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 71 * Number of variables: 71 Notification: Performance of Generate backend data structure: time 0.001372/0.204, allocations: 0.8255 MB / 0.7168 GB, free: 14.46 MB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 4.309e-05/0.2041, allocations: 8.031 kB / 0.7169 GB, free: 14.46 MB / 0.5137 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 7.7e-05/0.2042, allocations: 70.72 kB / 0.7169 GB, free: 14.38 MB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 9.541e-05/0.2043, allocations: 60.19 kB / 0.717 GB, free: 14.32 MB / 0.5137 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005865/0.2049, allocations: 458.9 kB / 0.7174 GB, free: 13.84 MB / 0.5137 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.512e-05/0.2049, allocations: 28.66 kB / 0.7174 GB, free: 13.81 MB / 0.5137 GB Notification: Performance of preOpt expandDerOperator (simulation): time 5.42e-05/0.205, allocations: 32 kB / 0.7175 GB, free: 13.78 MB / 0.5137 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0006232/0.2056, allocations: 322 kB / 0.7178 GB, free: 13.46 MB / 0.5137 GB Notification: Performance of preOpt findStateOrder (simulation): time 9.859e-06/0.2056, allocations: 0 / 0.7178 GB, free: 13.46 MB / 0.5137 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.939e-05/0.2057, allocations: 8 kB / 0.7178 GB, free: 13.45 MB / 0.5137 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.679e-06/0.2057, allocations: 8 kB / 0.7178 GB, free: 13.44 MB / 0.5137 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006348/0.2063, allocations: 286.4 kB / 0.7181 GB, free: 13.16 MB / 0.5137 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 0.002019/0.2083, allocations: 1.356 MB / 0.7194 GB, free: 11.68 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005168/0.2089, allocations: 265.9 kB / 0.7197 GB, free: 11.42 MB / 0.5137 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003109/0.2092, allocations: 148.8 kB / 0.7198 GB, free: 11.27 MB / 0.5137 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0004174/0.2096, allocations: 0.4947 MB / 0.7203 GB, free: 10.66 MB / 0.5137 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.349e-05/0.2096, allocations: 34.56 kB / 0.7203 GB, free: 10.62 MB / 0.5137 GB Notification: Performance of pre-optimization done (n=25): time 1.423e-06/0.2097, allocations: 0 / 0.7203 GB, free: 10.62 MB / 0.5137 GB Notification: Performance of matching and sorting (n=25): time 0.001751/0.2114, allocations: 0.6008 MB / 0.7209 GB, free: 9.996 MB / 0.5137 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.174e-05/0.2115, allocations: 55.41 kB / 0.7209 GB, free: 9.93 MB / 0.5137 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004688/0.2119, allocations: 466.2 kB / 0.7214 GB, free: 9.465 MB / 0.5137 GB Notification: Performance of collectPreVariables (initialization): time 3.654e-05/0.212, allocations: 33.7 kB / 0.7214 GB, free: 9.426 MB / 0.5137 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001769/0.2122, allocations: 240.4 kB / 0.7217 GB, free: 9.188 MB / 0.5137 GB Notification: Performance of collectInitialBindings (initialization): time 6.711e-05/0.2122, allocations: 90.69 kB / 0.7217 GB, free: 9.098 MB / 0.5137 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.622e-05/0.2123, allocations: 33.7 kB / 0.7218 GB, free: 9.059 MB / 0.5137 GB Notification: Performance of setup shared object (initialization): time 0.0001287/0.2124, allocations: 358.8 kB / 0.7221 GB, free: 8.699 MB / 0.5137 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003122/0.2127, allocations: 127.9 kB / 0.7222 GB, free: 8.574 MB / 0.5137 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003664/0.2131, allocations: 193.7 kB / 0.7224 GB, free: 8.367 MB / 0.5137 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.000626/0.2138, allocations: 294.6 kB / 0.7227 GB, free: 8.074 MB / 0.5137 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.37e-06/0.2138, allocations: 3.938 kB / 0.7227 GB, free: 8.07 MB / 0.5137 GB Notification: Performance of matching and sorting (n=37) (initialization): time 0.001554/0.2153, allocations: 0.5094 MB / 0.7232 GB, free: 7.551 MB / 0.5137 GB Notification: Performance of prepare postOptimizeDAE: time 7.323e-05/0.2154, allocations: 106.7 kB / 0.7233 GB, free: 7.434 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.472e-06/0.2154, allocations: 0 / 0.7233 GB, free: 7.434 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003619/0.2158, allocations: 64.73 kB / 0.7234 GB, free: 7.367 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003582/0.2162, allocations: 67.95 kB / 0.7234 GB, free: 7.301 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0004242/0.2166, allocations: 0.5679 MB / 0.724 GB, free: 6.707 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004985/0.2171, allocations: 67.73 kB / 0.7241 GB, free: 6.641 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.974e-05/0.2172, allocations: 15.98 kB / 0.7241 GB, free: 6.625 MB / 0.5137 GB Notification: Performance of prepare postOptimizeDAE: time 8.356e-06/0.2172, allocations: 4 kB / 0.7241 GB, free: 6.621 MB / 0.5137 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0007275/0.2179, allocations: 321.9 kB / 0.7244 GB, free: 6.309 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.638e-06/0.2179, allocations: 8 kB / 0.7244 GB, free: 6.301 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.635e-06/0.2179, allocations: 0 / 0.7244 GB, free: 6.301 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000383/0.2183, allocations: 87.88 kB / 0.7245 GB, free: 6.215 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 5.28e-06/0.2183, allocations: 4.078 kB / 0.7245 GB, free: 6.211 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004275/0.2188, allocations: 67.64 kB / 0.7245 GB, free: 6.145 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.904e-05/0.2188, allocations: 15.98 kB / 0.7246 GB, free: 6.129 MB / 0.5137 GB Notification: Model statistics after passing the back-end for initialization: * 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 initialization (34): * Single equations (assignments): 33 * 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 {(1,3)} Notification: Performance of prepare postOptimizeDAE: time 0.0002451/0.2191, allocations: 253.6 kB / 0.7248 GB, free: 5.871 MB / 0.5137 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 7.983e-05/0.2192, allocations: 47.34 kB / 0.7248 GB, free: 5.824 MB / 0.5137 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0009782/0.2201, allocations: 444.1 kB / 0.7253 GB, free: 5.371 MB / 0.5137 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.008e-05/0.2202, allocations: 4 kB / 0.7253 GB, free: 5.367 MB / 0.5137 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.94e-06/0.2202, allocations: 0 / 0.7253 GB, free: 5.367 MB / 0.5137 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.864e-06/0.2202, allocations: 7.922 kB / 0.7253 GB, free: 5.359 MB / 0.5137 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001491/0.2217, allocations: 0.9652 MB / 0.7262 GB, free: 4.324 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.272e-06/0.2217, allocations: 4 kB / 0.7262 GB, free: 4.32 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002341/0.2219, allocations: 55.84 kB / 0.7263 GB, free: 4.266 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001659/0.2221, allocations: 40.95 kB / 0.7263 GB, free: 4.223 MB / 0.5137 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.805e-05/0.2222, allocations: 11.98 kB / 0.7263 GB, free: 4.211 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.000342/0.2225, allocations: 0.5601 MB / 0.7269 GB, free: 3.625 MB / 0.5137 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.573e-06/0.2225, allocations: 0 / 0.7269 GB, free: 3.625 MB / 0.5137 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0008025/0.2233, allocations: 0.504 MB / 0.7274 GB, free: 3.09 MB / 0.5137 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001744/0.2235, allocations: 164.3 kB / 0.7275 GB, free: 2.91 MB / 0.5137 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.647e-05/0.2236, allocations: 4 kB / 0.7275 GB, free: 2.906 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003764/0.224, allocations: 43.95 kB / 0.7276 GB, free: 2.863 MB / 0.5137 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.302e-05/0.224, allocations: 31.84 kB / 0.7276 GB, free: 2.832 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.334e-05/0.2241, allocations: 11.94 kB / 0.7276 GB, free: 2.82 MB / 0.5137 GB Notification: Performance of sorting global known variables: time 0.0003375/0.2244, allocations: 322.9 kB / 0.7279 GB, free: 2.508 MB / 0.5137 GB Notification: Performance of sort global known variables: time 1.51e-07/0.2244, allocations: 0 / 0.7279 GB, free: 2.508 MB / 0.5137 GB Notification: Performance of remove unused functions: time 0.0007637/0.2252, allocations: 255.5 kB / 0.7282 GB, free: 2.258 MB / 0.5137 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * 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 (25): * Single equations (assignments): 21 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * 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 Backend phase and start with SimCode phase: time 0.001491/0.2267, allocations: 1.193 MB / 0.7293 GB, free: 1.031 MB / 0.5137 GB Notification: Performance of simCode: created initialization part: time 0.001181/0.2279, allocations: 495.4 kB / 0.7298 GB, free: 0.5469 MB / 0.5137 GB Notification: Performance of simCode: created event and clocks part: time 3.206e-06/0.2279, allocations: 0 / 0.7298 GB, free: 0.5469 MB / 0.5137 GB Notification: Performance of simCode: created simulation system equations: time 0.000409/0.2283, allocations: 190.7 kB / 0.73 GB, free: 372 kB / 0.5137 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001549/0.2299, allocations: 255.4 kB / 0.7302 GB, free: 124 kB / 0.5137 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007393/0.2373, allocations: 4.302 MB / 0.7344 GB, free: 11.7 MB / 0.5294 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004145/0.2377, allocations: 0.863 MB / 0.7353 GB, free: 10.8 MB / 0.5294 GB Notification: Performance of simCode: alias equations: time 0.0005398/0.2383, allocations: 116.2 kB / 0.7354 GB, free: 10.69 MB / 0.5294 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002239/0.2385, allocations: 171.4 kB / 0.7355 GB, free: 10.52 MB / 0.5294 GB Notification: Performance of SimCode: time 3.387e-06/0.2385, allocations: 0 / 0.7355 GB, free: 10.52 MB / 0.5294 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03028/0.2688, allocations: 14.46 MB / 0.7497 GB, free: 12.43 MB / 0.545 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002351/0.2691, allocations: 284.5 kB / 0.7499 GB, free: 12.05 MB / 0.545 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.066/2.335, allocations: 0 / 0.7499 GB, free: 12.05 MB / 0.545 GB (rm -f BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.CheckValve.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.CheckValve.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.CheckValve.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.CheckValve.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_BuildingSystems_BuildingSystems_Fluid_FixedResistances_Examples_CheckValve_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 BuildingSystems_BuildingSystems_Fluid_FixedResistances_Examples_CheckValve.fmu > BuildingSystems_BuildingSystems.Fluid.FixedResistances.Examples.CheckValve.pipe 2>&1)