Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger.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: "" <> buildModelFMU(IDEAS.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Storage_BaseClasses_Examples_IndirectTankHeatExchanger",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Storage_BaseClasses_Examples_IndirectTankHeatExchanger",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 0.00567/0.005671, allocations: 96.7 kB / 15.73 MB, free: 6.047 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001282/0.001282, allocations: 198.6 kB / 16.68 MB, free: 5.973 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.429/1.429, allocations: 222.9 MB / 240.4 MB, free: 4.312 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9682/0.9682, allocations: 135.6 MB / 426.1 MB, free: 11.91 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001882/0.001882, allocations: 71.88 kB / 0.5857 GB, free: 3.219 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3272/0.3291, allocations: 81.02 MB / 0.6649 GB, free: 6.816 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger): time 0.02752/0.3567, allocations: 28.55 MB / 0.6927 GB, free: 15.89 MB / 0.5294 GB Notification: Performance of NFInst.instExpressions: time 0.01105/0.3678, allocations: 7.898 MB / 0.7005 GB, free: 9.465 MB / 0.5294 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0008621/0.3687, allocations: 34.31 kB / 0.7005 GB, free: 9.453 MB / 0.5294 GB Notification: Performance of NFTyping.typeComponents: time 0.0009728/0.3697, allocations: 413.8 kB / 0.7009 GB, free: 9.102 MB / 0.5294 GB Notification: Performance of NFTyping.typeBindings: time 0.002199/0.3719, allocations: 1.013 MB / 0.7019 GB, free: 8.277 MB / 0.5294 GB Notification: Performance of NFTyping.typeClassSections: time 0.002437/0.3743, allocations: 1.068 MB / 0.7029 GB, free: 7.477 MB / 0.5294 GB Notification: Performance of NFFlatten.flatten: time 0.004784/0.3791, allocations: 4.898 MB / 0.7077 GB, free: 4.57 MB / 0.5294 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002567/0.3817, allocations: 2.301 MB / 0.71 GB, free: 2.582 MB / 0.5294 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003054/0.3848, allocations: 1.795 MB / 0.7117 GB, free: 0.7852 MB / 0.5294 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001708/0.3865, allocations: 1.451 MB / 0.7131 GB, free: 15.33 MB / 0.545 GB Notification: Performance of NFPackage.collectConstants: time 0.0003374/0.3868, allocations: 236 kB / 0.7133 GB, free: 15.1 MB / 0.545 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00245/0.3893, allocations: 1.307 MB / 0.7146 GB, free: 13.79 MB / 0.545 GB Notification: Performance of NFScalarize.scalarize: time 0.0005602/0.3899, allocations: 0.5569 MB / 0.7152 GB, free: 13.23 MB / 0.545 GB Notification: Performance of NFVerifyModel.verify: time 0.001245/0.3911, allocations: 1.159 MB / 0.7163 GB, free: 12.07 MB / 0.545 GB Notification: Performance of NFConvertDAE.convert: time 0.003977/0.3951, allocations: 3.695 MB / 0.7199 GB, free: 8.359 MB / 0.545 GB Notification: Performance of FrontEnd - DAE generated: time 5.741e-06/0.3951, allocations: 0 / 0.7199 GB, free: 8.359 MB / 0.545 GB Notification: Performance of FrontEnd: time 1.513e-06/0.3951, allocations: 3.938 kB / 0.7199 GB, free: 8.355 MB / 0.545 GB Notification: Performance of Transformations before backend: time 2.532e-05/0.3952, allocations: 0 / 0.7199 GB, free: 8.355 MB / 0.545 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 348 * Number of variables: 348 Notification: Performance of Generate backend data structure: time 0.004412/0.3996, allocations: 2.617 MB / 0.7225 GB, free: 5.68 MB / 0.545 GB Notification: Performance of prepare preOptimizeDAE: time 3.655e-05/0.3996, allocations: 12.03 kB / 0.7225 GB, free: 5.668 MB / 0.545 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002688/0.3999, allocations: 222.8 kB / 0.7227 GB, free: 5.441 MB / 0.545 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007362/0.4007, allocations: 235.6 kB / 0.7229 GB, free: 5.211 MB / 0.545 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002705/0.4034, allocations: 1.816 MB / 0.7247 GB, free: 3.34 MB / 0.545 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.957e-05/0.4035, allocations: 114.7 kB / 0.7248 GB, free: 3.227 MB / 0.545 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002277/0.4037, allocations: 155.9 kB / 0.7249 GB, free: 3.074 MB / 0.545 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002917/0.4066, allocations: 1.998 MB / 0.7269 GB, free: 1.012 MB / 0.545 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.339e-05/0.4067, allocations: 0 / 0.7269 GB, free: 1.012 MB / 0.545 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001427/0.4068, allocations: 60 kB / 0.727 GB, free: 0.9531 MB / 0.545 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.549e-05/0.4069, allocations: 43.92 kB / 0.727 GB, free: 0.9102 MB / 0.545 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002736/0.4096, allocations: 1.794 MB / 0.7287 GB, free: 15.11 MB / 0.5606 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 0.01029/0.4199, allocations: 7.615 MB / 0.7362 GB, free: 7.188 MB / 0.5606 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001879/0.4218, allocations: 1.445 MB / 0.7376 GB, free: 5.719 MB / 0.5606 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008872/0.4227, allocations: 0.6606 MB / 0.7382 GB, free: 5.055 MB / 0.5606 GB Notification: Performance of preOpt evalFunc (simulation): time 0.005838/0.4286, allocations: 3.858 MB / 0.742 GB, free: 0.8789 MB / 0.5606 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.985e-05/0.4286, allocations: 51.5 kB / 0.7421 GB, free: 0.8203 MB / 0.5606 GB Notification: Performance of pre-optimization done (n=88): time 2.465e-06/0.4286, allocations: 4 kB / 0.7421 GB, free: 0.8164 MB / 0.5606 GB Notification: Performance of matching and sorting (n=88): time 0.00238/0.431, allocations: 1.511 MB / 0.7435 GB, free: 15.3 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.6e-05/0.4311, allocations: 64.41 kB / 0.7436 GB, free: 15.23 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002056/0.4331, allocations: 1.649 MB / 0.7452 GB, free: 13.57 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 8.684e-05/0.4332, allocations: 49.7 kB / 0.7453 GB, free: 13.51 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006707/0.4339, allocations: 0.767 MB / 0.746 GB, free: 12.74 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002759/0.4342, allocations: 325.2 kB / 0.7463 GB, free: 12.42 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004195/0.4346, allocations: 303.5 kB / 0.7466 GB, free: 12.12 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 0.0001699/0.4348, allocations: 361.9 kB / 0.747 GB, free: 11.76 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001037/0.4358, allocations: 0.6917 MB / 0.7476 GB, free: 11.06 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001347/0.4372, allocations: 1.024 MB / 0.7486 GB, free: 9.906 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002212/0.4394, allocations: 1.62 MB / 0.7502 GB, free: 8.164 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.103e-06/0.4394, allocations: 4 kB / 0.7502 GB, free: 8.16 MB / 0.5762 GB Notification: Performance of matching and sorting (n=175) (initialization): time 0.003147/0.4426, allocations: 1.96 MB / 0.7521 GB, free: 6.191 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 2.352e-05/0.4426, allocations: 8 kB / 0.7521 GB, free: 6.184 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.557e-05/0.4426, allocations: 8 kB / 0.7521 GB, free: 6.176 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.679e-05/0.4427, allocations: 16 kB / 0.7522 GB, free: 6.16 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001245/0.4439, allocations: 335.5 kB / 0.7525 GB, free: 5.832 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.658e-05/0.444, allocations: 23.92 kB / 0.7525 GB, free: 5.809 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001065/0.445, allocations: 206.6 kB / 0.7527 GB, free: 5.605 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000119/0.4452, allocations: 56.27 kB / 0.7527 GB, free: 5.551 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001825/0.447, allocations: 1.292 MB / 0.754 GB, free: 4.254 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001354/0.4484, allocations: 1.02 MB / 0.755 GB, free: 3.109 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002209/0.4506, allocations: 1.62 MB / 0.7566 GB, free: 1.367 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.211e-06/0.4506, allocations: 4 kB / 0.7566 GB, free: 1.363 MB / 0.5762 GB Notification: Performance of matching and sorting (n=175) (initialization_lambda0): time 0.003096/0.4537, allocations: 1.953 MB / 0.7585 GB, free: 15.4 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 1.395e-05/0.4537, allocations: 8 kB / 0.7585 GB, free: 15.39 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.403e-05/0.4537, allocations: 16.09 kB / 0.7585 GB, free: 15.38 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.733e-05/0.4538, allocations: 16 kB / 0.7585 GB, free: 15.36 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001207/0.455, allocations: 331.5 kB / 0.7589 GB, free: 15.04 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.234e-05/0.455, allocations: 23.92 kB / 0.7589 GB, free: 15.02 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0011/0.4561, allocations: 155.1 kB / 0.759 GB, free: 14.86 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001191/0.4563, allocations: 63.98 kB / 0.7591 GB, free: 14.8 MB / 0.5919 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 40 * 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 (175): * Single equations (assignments): 175 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0002874/0.4565, allocations: 255.8 kB / 0.7593 GB, free: 14.54 MB / 0.5919 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002992/0.4568, allocations: 159 kB / 0.7595 GB, free: 14.39 MB / 0.5919 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002164/0.459, allocations: 1.293 MB / 0.7607 GB, free: 13.08 MB / 0.5919 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.465e-05/0.4591, allocations: 8 kB / 0.7608 GB, free: 13.07 MB / 0.5919 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.96e-06/0.4591, allocations: 0 / 0.7608 GB, free: 13.07 MB / 0.5919 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001659/0.4607, allocations: 1.281 MB / 0.762 GB, free: 11.71 MB / 0.5919 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004251/0.465, allocations: 2.967 MB / 0.7649 GB, free: 8.664 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.098e-06/0.465, allocations: 0 / 0.7649 GB, free: 8.664 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008037/0.4658, allocations: 183.8 kB / 0.7651 GB, free: 8.484 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (simulation): time 8.907e-06/0.4658, allocations: 8 kB / 0.7651 GB, free: 8.477 MB / 0.5919 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.277e-05/0.4659, allocations: 27.92 kB / 0.7651 GB, free: 8.449 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 6.612e-06/0.4659, allocations: 4 kB / 0.7651 GB, free: 8.445 MB / 0.5919 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.814e-06/0.4659, allocations: 0 / 0.7651 GB, free: 8.445 MB / 0.5919 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002722/0.4686, allocations: 1.922 MB / 0.767 GB, free: 6.488 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006013/0.4693, allocations: 411.7 kB / 0.7674 GB, free: 6.066 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001976/0.4695, allocations: 23.94 kB / 0.7674 GB, free: 6.043 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000748/0.4702, allocations: 63.77 kB / 0.7675 GB, free: 5.98 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.959e-05/0.4703, allocations: 48.94 kB / 0.7675 GB, free: 5.934 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.374e-05/0.4704, allocations: 35.97 kB / 0.7675 GB, free: 5.898 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.001662/0.4721, allocations: 1.234 MB / 0.7688 GB, free: 4.668 MB / 0.5919 GB Notification: Performance of sort global known variables: time 2e-07/0.4721, allocations: 0 / 0.7688 GB, free: 4.668 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.002021/0.4741, allocations: 0.9242 MB / 0.7697 GB, free: 3.742 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 6 (indTanHex.vol[1].dynBal.U,indTanHex.vol[2].dynBal.U,indTanHex.vol[3].dynBal.U,indTanHex.cap[1].T,indTanHex.cap[2].T,indTanHex.cap[3].T) * 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 (89): * Single equations (assignments): 87 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.003523/0.4776, allocations: 2.736 MB / 0.7723 GB, free: 0.9766 MB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.003435/0.4811, allocations: 2.336 MB / 0.7746 GB, free: 14.65 MB / 0.6075 GB Notification: Performance of simCode: created event and clocks part: time 3.086e-06/0.4811, allocations: 0 / 0.7746 GB, free: 14.65 MB / 0.6075 GB Notification: Performance of simCode: created simulation system equations: time 0.0007161/0.4818, allocations: 0.5209 MB / 0.7751 GB, free: 14.12 MB / 0.6075 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003581/0.4854, allocations: 0.917 MB / 0.776 GB, free: 13.23 MB / 0.6075 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01963/0.5051, allocations: 15.14 MB / 0.7908 GB, free: 13.71 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001289/0.5064, allocations: 1.678 MB / 0.7924 GB, free: 12 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.002116/0.5085, allocations: 0.9145 MB / 0.7933 GB, free: 11.09 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008983/0.5094, allocations: 0.6281 MB / 0.7939 GB, free: 10.46 MB / 0.6231 GB Notification: Performance of SimCode: time 4.81e-07/0.5094, allocations: 0 / 0.7939 GB, free: 10.46 MB / 0.6231 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.97/1.479, allocations: 49.39 MB / 0.8422 GB, free: 9.57 MB / 0.67 GB Notification: Performance of buildModelFMU: Generate platform static: time 14.82/16.3, allocations: 7.922 kB / 0.8422 GB, free: 9.562 MB / 0.67 GB (rm -f IDEAS_dev_IDEAS.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IDEAS_dev_IDEAS_Fluid_Storage_BaseClasses_Examples_IndirectTankHeatExchanger_fmu --startTime=0 --stopTime=15 --timeout=50 --tolerance=1e-06 IDEAS_dev_IDEAS_Fluid_Storage_BaseClasses_Examples_IndirectTankHeatExchanger.fmu > IDEAS_dev_IDEAS.Fluid.Storage.BaseClasses.Examples.IndirectTankHeatExchanger.pipe 2>&1)