Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u.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: translateModel(IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u") translateModel(IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.006592/0.006592, allocations: 104.3 kB / 15.74 MB, free: 6.441 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001592/0.001592, allocations: 190.2 kB / 16.67 MB, free: 6.355 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.325/1.325, allocations: 222.9 MB / 240.4 MB, free: 4.301 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9261/0.9261, allocations: 135.1 MB / 425.7 MB, free: 11.9 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001228/0.001228, allocations: 59.91 kB / 0.5856 GB, free: 3.32 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4339/0.4351, allocations: 80.91 MB / 0.6647 GB, free: 7.562 MB / 0.4981 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/Blocks/Math.mo:543:5-544:48:writable] Warning: Parameter mov.gaiSpe.k has no value, and is fixed during initialization (fixed=true), using available start value (start=1) as default value. Notification: Performance of NFInst.instantiate(IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u): time 0.07602/0.5112, allocations: 66.99 MB / 0.7301 GB, free: 14.43 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.02438/0.5356, allocations: 16.73 MB / 0.7464 GB, free: 13.65 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003739/0.5394, allocations: 99.44 kB / 0.7465 GB, free: 13.55 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.003565/0.5429, allocations: 1.188 MB / 0.7477 GB, free: 12.36 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.007507/0.5505, allocations: 2.77 MB / 0.7504 GB, free: 9.578 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.005932/0.5564, allocations: 2.372 MB / 0.7527 GB, free: 7.223 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.007641/0.5641, allocations: 5.352 MB / 0.7579 GB, free: 1.855 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002835/0.5669, allocations: 1.913 MB / 0.7598 GB, free: 15.89 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004872/0.5718, allocations: 2.151 MB / 0.7619 GB, free: 13.74 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002587/0.5744, allocations: 1.489 MB / 0.7634 GB, free: 12.24 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.0006406/0.5751, allocations: 188 kB / 0.7635 GB, free: 12.06 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004581/0.5797, allocations: 1.973 MB / 0.7655 GB, free: 10.08 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.001042/0.5807, allocations: 0.5528 MB / 0.766 GB, free: 9.527 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.002365/0.5831, allocations: 1.139 MB / 0.7671 GB, free: 8.383 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.007794/0.5909, allocations: 3.638 MB / 0.7707 GB, free: 4.734 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 5.911e-06/0.591, allocations: 4 kB / 0.7707 GB, free: 4.73 MB / 0.5919 GB Notification: Performance of FrontEnd: time 3.066e-06/0.591, allocations: 0 / 0.7707 GB, free: 4.73 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 0.0001136/0.5911, allocations: 3.938 kB / 0.7707 GB, free: 4.727 MB / 0.5919 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 310 * Number of variables: 310 Notification: Performance of Generate backend data structure: time 0.005694/0.5968, allocations: 2.679 MB / 0.7733 GB, free: 1.973 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 5.301e-05/0.5969, allocations: 8.031 kB / 0.7733 GB, free: 1.965 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001426/0.5983, allocations: 381.6 kB / 0.7737 GB, free: 1.59 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0033/0.6016, allocations: 1.811 MB / 0.7754 GB, free: 15.73 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.49e-05/0.6017, allocations: 98.44 kB / 0.7755 GB, free: 15.63 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001917/0.6019, allocations: 131.9 kB / 0.7756 GB, free: 15.5 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002359/0.6043, allocations: 1.431 MB / 0.777 GB, free: 13.98 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.653e-05/0.6043, allocations: 11.92 kB / 0.7771 GB, free: 13.97 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001132/0.6044, allocations: 48 kB / 0.7771 GB, free: 13.93 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.985e-05/0.6045, allocations: 46.31 kB / 0.7771 GB, free: 13.88 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002233/0.6067, allocations: 1.098 MB / 0.7782 GB, free: 12.77 MB / 0.6075 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 0.008532/0.6153, allocations: 7.343 MB / 0.7854 GB, free: 4.859 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001916/0.6172, allocations: 1.304 MB / 0.7867 GB, free: 3.445 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008817/0.6181, allocations: 451.3 kB / 0.7871 GB, free: 3.004 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.004202/0.6223, allocations: 2.634 MB / 0.7897 GB, free: 140 kB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0009856/0.6233, allocations: 490.6 kB / 0.7901 GB, free: 15.64 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=63): time 2.224e-06/0.6233, allocations: 0 / 0.7901 GB, free: 15.64 MB / 0.6231 GB Notification: Performance of matching and sorting (n=63): time 0.002872/0.6262, allocations: 1.198 MB / 0.7913 GB, free: 14.41 MB / 0.6231 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.963e-05/0.6263, allocations: 115.4 kB / 0.7914 GB, free: 14.28 MB / 0.6231 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001851/0.6281, allocations: 1.48 MB / 0.7929 GB, free: 12.8 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 7.289e-05/0.6282, allocations: 41.7 kB / 0.7929 GB, free: 12.75 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007745/0.629, allocations: 0.8918 MB / 0.7938 GB, free: 11.85 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002561/0.6293, allocations: 228.8 kB / 0.794 GB, free: 11.62 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003157/0.6296, allocations: 214.3 kB / 0.7942 GB, free: 11.4 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.00013/0.6297, allocations: 345.9 kB / 0.7945 GB, free: 11.06 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008156/0.6306, allocations: 376.6 kB / 0.7949 GB, free: 10.69 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001046/0.6316, allocations: 0.732 MB / 0.7956 GB, free: 9.801 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001842/0.6335, allocations: 1.086 MB / 0.7967 GB, free: 8.574 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.871e-06/0.6335, allocations: 4 kB / 0.7967 GB, free: 8.57 MB / 0.6231 GB Notification: Performance of matching and sorting (n=122) (initialization): time 0.002548/0.636, allocations: 1.266 MB / 0.7979 GB, free: 7.289 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 4.129e-05/0.6361, allocations: 33.8 kB / 0.7979 GB, free: 7.25 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.668e-05/0.6361, allocations: 15.94 kB / 0.7979 GB, free: 7.234 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.582e-05/0.6361, allocations: 19.94 kB / 0.798 GB, free: 7.215 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009335/0.6371, allocations: 252.2 kB / 0.7982 GB, free: 6.969 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.937e-05/0.6371, allocations: 15.94 kB / 0.7982 GB, free: 6.953 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0011/0.6382, allocations: 139.6 kB / 0.7984 GB, free: 6.816 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.855e-05/0.6383, allocations: 47.98 kB / 0.7984 GB, free: 6.77 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001337/0.6397, allocations: 0.6815 MB / 0.7991 GB, free: 6.086 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001046/0.6407, allocations: 0.7047 MB / 0.7998 GB, free: 5.219 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001776/0.6425, allocations: 1.059 MB / 0.8008 GB, free: 4.016 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 8.966e-06/0.6425, allocations: 7.938 kB / 0.8008 GB, free: 4.008 MB / 0.6231 GB Notification: Performance of matching and sorting (n=122) (initialization_lambda0): time 0.002524/0.6451, allocations: 1.239 MB / 0.802 GB, free: 2.754 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 3.501e-05/0.6451, allocations: 41.8 kB / 0.802 GB, free: 2.707 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.355e-05/0.6451, allocations: 12 kB / 0.8021 GB, free: 2.695 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.509e-05/0.6451, allocations: 16 kB / 0.8021 GB, free: 2.68 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008978/0.646, allocations: 239.6 kB / 0.8023 GB, free: 2.445 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.77e-05/0.6461, allocations: 19.94 kB / 0.8023 GB, free: 2.426 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001095/0.6472, allocations: 116 kB / 0.8024 GB, free: 2.312 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.423e-05/0.6473, allocations: 47.98 kB / 0.8025 GB, free: 2.266 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 45 * Number of states: 0 () * Number of discrete variables: 6 (TSet.count,$PRE.TSet.count,TSet.T_start,$PRE.TSet.T_start,$whenCondition1,conPI.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (120): * Single equations (assignments): 118 * Array equations: 1 * Algorithm blocks: 1 * 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 0.0002917/0.6476, allocations: 253.2 kB / 0.8027 GB, free: 2.012 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002451/0.6478, allocations: 169.9 kB / 0.8029 GB, free: 1.844 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002388/0.6502, allocations: 1.057 MB / 0.8039 GB, free: 0.7734 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.384e-05/0.6502, allocations: 8 kB / 0.8039 GB, free: 0.7656 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.774e-06/0.6503, allocations: 4 kB / 0.8039 GB, free: 0.7617 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001625/0.6519, allocations: 0.7807 MB / 0.8047 GB, free: 15.96 MB / 0.6387 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00441/0.6563, allocations: 2.685 MB / 0.8073 GB, free: 13.2 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.034e-06/0.6563, allocations: 4 kB / 0.8073 GB, free: 13.2 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007306/0.6571, allocations: 156 kB / 0.8075 GB, free: 13.04 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001604/0.6572, allocations: 24.84 kB / 0.8075 GB, free: 13.02 MB / 0.6387 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.278e-05/0.6573, allocations: 27.98 kB / 0.8075 GB, free: 12.99 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001041/0.6584, allocations: 1.421 MB / 0.8089 GB, free: 11.43 MB / 0.6387 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.014e-06/0.6584, allocations: 8.156 kB / 0.8089 GB, free: 11.42 MB / 0.6387 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003028/0.6614, allocations: 1.566 MB / 0.8104 GB, free: 9.801 MB / 0.6387 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006045/0.662, allocations: 358.5 kB / 0.8108 GB, free: 9.43 MB / 0.6387 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001729/0.6622, allocations: 23.98 kB / 0.8108 GB, free: 9.406 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000816/0.663, allocations: 55.8 kB / 0.8108 GB, free: 9.352 MB / 0.6387 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000133/0.6632, allocations: 60.53 kB / 0.8109 GB, free: 9.293 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.569e-05/0.6633, allocations: 39.95 kB / 0.8109 GB, free: 9.254 MB / 0.6387 GB Notification: Performance of sorting global known variables: time 0.001451/0.6647, allocations: 1.07 MB / 0.812 GB, free: 8.16 MB / 0.6387 GB Notification: Performance of sort global known variables: time 2.11e-07/0.6647, allocations: 0 / 0.812 GB, free: 8.16 MB / 0.6387 GB Notification: Performance of remove unused functions: time 0.002346/0.6671, allocations: 0.9393 MB / 0.8129 GB, free: 7.219 MB / 0.6387 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 6 (vol.dynBal.U,mov.filter.s[1],mov.filter.s[2],conPI.I.y,THeaOut.T,hea.vol.dynBal.U) * Number of discrete variables: 3 ($whenCondition1,TSet.T_start,TSet.count) * Number of discrete states: 1 (TSet.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (75): * Single equations (assignments): 67 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 5 * When equations: 2 * 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 {(1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001109/0.6682, allocations: 0.5394 MB / 0.8134 GB, free: 6.68 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.003309/0.6715, allocations: 1.562 MB / 0.815 GB, free: 5.105 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 3.677e-06/0.6715, allocations: 0 / 0.815 GB, free: 5.105 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.001137/0.6727, allocations: 0.5531 MB / 0.8155 GB, free: 4.539 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003429/0.6761, allocations: 0.8963 MB / 0.8164 GB, free: 3.66 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005171/0.6813, allocations: 3.106 MB / 0.8194 GB, free: 0.4961 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001037/0.6824, allocations: 1.401 MB / 0.8208 GB, free: 15.05 MB / 0.6544 GB Notification: Performance of simCode: alias equations: time 0.001679/0.6841, allocations: 430.4 kB / 0.8212 GB, free: 14.63 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003315/0.6844, allocations: 143.4 kB / 0.8213 GB, free: 14.49 MB / 0.6544 GB Notification: Performance of SimCode: time 7.92e-07/0.6844, allocations: 0 / 0.8213 GB, free: 14.49 MB / 0.6544 GB Notification: Performance of Templates: time 0.0556/0.74, allocations: 34.74 MB / 0.8552 GB, free: 12.18 MB / 0.6856 GB make -j1 -f IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u.makefile (rm -f IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u.sim & ./IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_dev_IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u.pipe 2>&1)