Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.8.0.x_Buildings.Obsolete.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 8.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo) Running command: "" <> buildModelFMU(Buildings.Obsolete.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating,fileNamePrefix="Buildings_maint_8_0_x_Buildings_Obsolete_DistrictHeatingCooling_Plants_Validation_LakeWaterHeatExchanger_T_Heating",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Obsolete.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating,fileNamePrefix="Buildings_maint_8_0_x_Buildings_Obsolete_DistrictHeatingCooling_Plants_Validation_LakeWaterHeatExchanger_T_Heating",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo): time 1.67/1.67, allocations: 288.4 MB / 303.3 MB, free: 8.164 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.0009928/0.0009926, allocations: 189.5 kB / 372 MB, free: 10.25 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.432/1.432, allocations: 205.4 MB / 0.6307 GB, free: 9.984 MB / 458.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0008025/0.0008025, allocations: 100.8 kB / 0.7441 GB, free: 5.91 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0004657/0.0004658, allocations: 11.19 kB / 0.867 GB, free: 142.1 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2262/0.2267, allocations: 115.3 MB / 0.9796 GB, free: 27.57 MB / 0.6198 GB Notification: Performance of NFInst.instantiate(Buildings.Obsolete.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating): time 0.5468/0.7735, allocations: 106.7 MB / 1.084 GB, free: 22.68 MB / 0.6823 GB Notification: Performance of NFInst.instExpressions: time 0.03327/0.8069, allocations: 24.69 MB / 1.108 GB, free: 22.24 MB / 0.6823 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004906/0.8118, allocations: 116.5 kB / 1.108 GB, free: 22.24 MB / 0.6823 GB Notification: Performance of NFTyping.typeComponents: time 0.003458/0.8153, allocations: 0.8574 MB / 1.109 GB, free: 22.23 MB / 0.6823 GB Notification: Performance of NFTyping.typeBindings: time 0.01016/0.8255, allocations: 2.756 MB / 1.112 GB, free: 21.57 MB / 0.6823 GB Notification: Performance of NFTyping.typeClassSections: time 0.007636/0.8331, allocations: 2.204 MB / 1.114 GB, free: 21.35 MB / 0.6823 GB Notification: Performance of NFFlatten.flatten: time 0.01146/0.8446, allocations: 8.097 MB / 1.122 GB, free: 18.04 MB / 0.6823 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003443/0.8481, allocations: 2.037 MB / 1.124 GB, free: 17.32 MB / 0.6823 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005564/0.8537, allocations: 2.376 MB / 1.126 GB, free: 16.42 MB / 0.6823 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003629/0.8573, allocations: 1.923 MB / 1.128 GB, free: 15.78 MB / 0.6823 GB Notification: Performance of NFPackage.collectConstants: time 0.0005024/0.8578, allocations: 105.9 kB / 1.128 GB, free: 15.78 MB / 0.6823 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003891/0.8617, allocations: 1.042 MB / 1.129 GB, free: 15.5 MB / 0.6823 GB Notification: Performance of NFScalarize.scalarize: time 0.0005214/0.8623, allocations: 467.8 kB / 1.129 GB, free: 15.26 MB / 0.6823 GB Notification: Performance of NFVerifyModel.verify: time 0.001125/0.8634, allocations: 0.6293 MB / 1.13 GB, free: 14.89 MB / 0.6823 GB Notification: Performance of NFConvertDAE.convert: time 0.004394/0.8678, allocations: 3.883 MB / 1.134 GB, free: 12.73 MB / 0.6823 GB Notification: Performance of FrontEnd - DAE generated: time 8.526e-06/0.8678, allocations: 7.516 kB / 1.134 GB, free: 12.72 MB / 0.6823 GB Notification: Performance of FrontEnd: time 2.585e-06/0.8678, allocations: 0 / 1.134 GB, free: 12.72 MB / 0.6823 GB Notification: Performance of Transformations before backend: time 0.0001212/0.868, allocations: 1.031 kB / 1.134 GB, free: 12.72 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: 470 * Number of variables: 470 Notification: Performance of Generate backend data structure: time 0.006822/0.8748, allocations: 2.859 MB / 1.137 GB, free: 10.72 MB / 0.6823 GB Notification: Performance of prepare preOptimizeDAE: time 4.643e-05/0.8749, allocations: 14.17 kB / 1.137 GB, free: 10.71 MB / 0.6823 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.000512/0.8754, allocations: 262.9 kB / 1.137 GB, free: 10.51 MB / 0.6823 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005837/0.8812, allocations: 1.103 MB / 1.138 GB, free: 10.04 MB / 0.6823 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004999/0.8862, allocations: 2.38 MB / 1.14 GB, free: 8.219 MB / 0.6823 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001178/0.8864, allocations: 148.8 kB / 1.14 GB, free: 8.152 MB / 0.6823 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003173/0.8867, allocations: 192.5 kB / 1.141 GB, free: 8.09 MB / 0.6823 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005314/0.892, allocations: 2.513 MB / 1.143 GB, free: 6.551 MB / 0.6823 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.493e-05/0.8921, allocations: 12.98 kB / 1.143 GB, free: 6.539 MB / 0.6823 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001802/0.8923, allocations: 81.91 kB / 1.143 GB, free: 6.477 MB / 0.6823 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.253e-05/0.8924, allocations: 47.56 kB / 1.143 GB, free: 6.477 MB / 0.6823 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.005876/0.8982, allocations: 2.378 MB / 1.145 GB, free: 5.332 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 0.01714/0.9154, allocations: 12.13 MB / 1.157 GB, free: 10.77 MB / 0.698 GB Notification: Performance of preOpt comSubExp (simulation): time 0.008206/0.9236, allocations: 2.337 MB / 1.16 GB, free: 9.695 MB / 0.698 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002266/0.9259, allocations: 0.9433 MB / 1.161 GB, free: 9.254 MB / 0.698 GB Notification: Performance of preOpt evalFunc (simulation): time 0.00129/0.9272, allocations: 1.382 MB / 1.162 GB, free: 7.688 MB / 0.698 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.138e-05/0.9273, allocations: 46 kB / 1.162 GB, free: 7.641 MB / 0.698 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001777/0.9291, allocations: 226.6 kB / 1.162 GB, free: 7.516 MB / 0.698 GB Notification: Performance of pre-optimization done (n=105): time 3.487e-06/0.9291, allocations: 0 / 1.162 GB, free: 7.516 MB / 0.698 GB Notification: Performance of matching and sorting (n=111): time 0.0341/0.9632, allocations: 9.151 MB / 1.171 GB, free: 2.852 MB / 0.698 GB Notification: Performance of inlineWhenForInitialization (initialization): time 8.14e-05/0.9633, allocations: 167.2 kB / 1.171 GB, free: 2.652 MB / 0.698 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003131/0.9664, allocations: 2.068 MB / 1.173 GB, free: 0.5664 MB / 0.698 GB Notification: Performance of collectPreVariables (initialization): time 0.0002962/0.9668, allocations: 49.64 kB / 1.173 GB, free: 0.5117 MB / 0.698 GB Notification: Performance of collectInitialEqns (initialization): time 0.001117/0.9679, allocations: 1.206 MB / 1.174 GB, free: 15.34 MB / 0.7136 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003833/0.9683, allocations: 391.1 kB / 1.175 GB, free: 14.96 MB / 0.7136 GB Notification: Performance of simplifyInitialFunctions (initialization): time 9.455e-05/0.9684, allocations: 28 kB / 1.175 GB, free: 14.93 MB / 0.7136 GB Notification: Performance of setup shared object (initialization): time 0.000133/0.9685, allocations: 361.9 kB / 1.175 GB, free: 14.57 MB / 0.7136 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002359/0.9709, allocations: 0.9018 MB / 1.176 GB, free: 13.67 MB / 0.7136 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002516/0.9734, allocations: 1.304 MB / 1.177 GB, free: 12.21 MB / 0.7136 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00239/0.9758, allocations: 0.9862 MB / 1.178 GB, free: 11.22 MB / 0.7136 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.29e-06/0.9758, allocations: 0 / 1.178 GB, free: 11.22 MB / 0.7136 GB Notification: Performance of matching and sorting (n=182) (initialization): time 0.007953/0.9838, allocations: 3.012 MB / 1.181 GB, free: 8.195 MB / 0.7136 GB Notification: Performance of prepare postOptimizeDAE: time 0.0002304/0.984, allocations: 379.8 kB / 1.182 GB, free: 7.691 MB / 0.7136 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.54e-05/0.9841, allocations: 8 kB / 1.182 GB, free: 7.684 MB / 0.7136 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.005947/0.99, allocations: 1.431 MB / 1.183 GB, free: 6.25 MB / 0.7136 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001545/0.9916, allocations: 331.5 kB / 1.183 GB, free: 5.926 MB / 0.7136 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01292/1.005, allocations: 6.087 MB / 1.189 GB, free: 15.68 MB / 0.7292 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003631/1.008, allocations: 383.3 kB / 1.19 GB, free: 15.31 MB / 0.7292 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002599/1.008, allocations: 75.95 kB / 1.19 GB, free: 15.23 MB / 0.7292 GB Notification: Performance of prepare postOptimizeDAE: time 1.242e-05/1.008, allocations: 4 kB / 1.19 GB, free: 15.23 MB / 0.7292 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.005828/1.014, allocations: 2.355 MB / 1.192 GB, free: 12.87 MB / 0.7292 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.012e-05/1.014, allocations: 14.62 kB / 1.192 GB, free: 12.86 MB / 0.7292 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002684/1.017, allocations: 0.6826 MB / 1.193 GB, free: 12.17 MB / 0.7292 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001845/1.019, allocations: 399.5 kB / 1.193 GB, free: 11.78 MB / 0.7292 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01289/1.032, allocations: 6.771 MB / 1.2 GB, free: 4.754 MB / 0.7292 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003566/1.035, allocations: 331.4 kB / 1.2 GB, free: 4.43 MB / 0.7292 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002131/1.036, allocations: 67.97 kB / 1.2 GB, free: 4.363 MB / 0.7292 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 42 * 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 (127): * Single equations (assignments): 125 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 2 {2 16,3 36} Notification: Performance of prepare postOptimizeDAE: time 0.001469/1.037, allocations: 0.6224 MB / 1.201 GB, free: 3.73 MB / 0.7292 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004478/1.038, allocations: 229.1 kB / 1.201 GB, free: 3.504 MB / 0.7292 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006077/1.044, allocations: 2.513 MB / 1.203 GB, free: 1.004 MB / 0.7292 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.206e-05/1.044, allocations: 15.98 kB / 1.203 GB, free: 0.9883 MB / 0.7292 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.246e-06/1.044, allocations: 2.734 kB / 1.203 GB, free: 0.9883 MB / 0.7292 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.004956/1.049, allocations: 2.355 MB / 1.206 GB, free: 14.55 MB / 0.7448 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01163/1.06, allocations: 5.121 MB / 1.211 GB, free: 9.383 MB / 0.7448 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.115e-06/1.06, allocations: 0 / 1.211 GB, free: 9.383 MB / 0.7448 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.00129/1.062, allocations: 263.8 kB / 1.211 GB, free: 9.125 MB / 0.7448 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.003323/1.065, allocations: 0.8322 MB / 1.212 GB, free: 8.293 MB / 0.7448 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001154/1.065, allocations: 35.97 kB / 1.212 GB, free: 8.258 MB / 0.7448 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00242/1.068, allocations: 1.484 MB / 1.213 GB, free: 6.75 MB / 0.7448 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.928e-06/1.068, allocations: 4 kB / 1.213 GB, free: 6.746 MB / 0.7448 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.008362/1.076, allocations: 3.55 MB / 1.217 GB, free: 3.176 MB / 0.7448 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001613/1.078, allocations: 0.5291 MB / 1.217 GB, free: 2.625 MB / 0.7448 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000428/1.078, allocations: 20 kB / 1.217 GB, free: 2.605 MB / 0.7448 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002268/1.08, allocations: 320.7 kB / 1.218 GB, free: 2.293 MB / 0.7448 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001474/1.08, allocations: 72.84 kB / 1.218 GB, free: 2.223 MB / 0.7448 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001347/1.081, allocations: 51.97 kB / 1.218 GB, free: 2.172 MB / 0.7448 GB Notification: Performance of sorting global known variables: time 0.002439/1.083, allocations: 1.395 MB / 1.219 GB, free: 0.7656 MB / 0.7448 GB Notification: Performance of sort global known variables: time 2.1e-07/1.083, allocations: 0 / 1.219 GB, free: 0.7656 MB / 0.7448 GB Notification: Performance of remove unused functions: time 0.004709/1.088, allocations: 1.148 MB / 1.22 GB, free: 15.61 MB / 0.7605 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 2 (hex.valCoo.vol.dynBal.U,hex.valHea.vol.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 (86): * Single equations (assignments): 78 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 7 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {3 37} Notification: Performance of Backend phase and start with SimCode phase: time 0.009596/1.097, allocations: 4.505 MB / 1.225 GB, free: 11.13 MB / 0.7605 GB Notification: Performance of simCode: created initialization part: time 0.0094/1.107, allocations: 3.827 MB / 1.228 GB, free: 7.273 MB / 0.7605 GB Notification: Performance of simCode: created event and clocks part: time 7.925e-06/1.107, allocations: 0 / 1.228 GB, free: 7.273 MB / 0.7605 GB Notification: Performance of simCode: created simulation system equations: time 0.002567/1.109, allocations: 0.9919 MB / 1.229 GB, free: 6.285 MB / 0.7605 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005964/1.115, allocations: 1.155 MB / 1.23 GB, free: 5.152 MB / 0.7605 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.05152/1.167, allocations: 17.07 MB / 1.247 GB, free: 2.875 MB / 0.7761 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001242/1.168, allocations: 1.618 MB / 1.249 GB, free: 1.227 MB / 0.7761 GB Notification: Performance of simCode: alias equations: time 0.002709/1.171, allocations: 485.2 kB / 1.249 GB, free: 0.7695 MB / 0.7761 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001485/1.172, allocations: 1.046 MB / 1.25 GB, free: 15.72 MB / 0.7917 GB Notification: Performance of SimCode: time 8.71e-07/1.172, allocations: 0 / 1.25 GB, free: 15.72 MB / 0.7917 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1213/1.294, allocations: 77.72 MB / 1.326 GB, free: 2.684 MB / 0.8542 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002347/1.294, allocations: 320.7 kB / 1.326 GB, free: 2.32 MB / 0.8542 GB Notification: Performance of buildModelFMU: Generate platform static: time 4.456/5.75, allocations: 0 / 1.326 GB, free: 2.32 MB / 0.8542 GB (rm -f Buildings_maint.8.0.x_Buildings.Obsolete.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating.pipe ; mkfifo Buildings_maint.8.0.x_Buildings.Obsolete.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating.pipe ; head -c 1048576 < Buildings_maint.8.0.x_Buildings.Obsolete.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating.pipe >> ../files/Buildings_maint.8.0.x_Buildings.Obsolete.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_maint_8_0_x_Buildings_Obsolete_DistrictHeatingCooling_Plants_Validation_LakeWaterHeatExchanger_T_Heating_fmu --startTime=0 --stopTime=3600 --timeout=50 --tolerance=1e-06 Buildings_maint_8_0_x_Buildings_Obsolete_DistrictHeatingCooling_Plants_Validation_LakeWaterHeatExchanger_T_Heating.fmu > Buildings_maint.8.0.x_Buildings.Obsolete.DistrictHeatingCooling.Plants.Validation.LakeWaterHeatExchanger_T_Heating.pipe 2>&1)