Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_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/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: translateModel(BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u") translateModel(BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001364/0.001364, allocations: 104.5 kB / 16.39 MB, free: 6.379 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001391/0.001391, allocations: 192.7 kB / 17.33 MB, free: 5.848 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.28/1.28, allocations: 222.9 MB / 241 MB, free: 15.15 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002294/0.002294, allocations: 294.1 kB / 291.5 MB, free: 14.46 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.9084/0.9084, allocations: 169.3 MB / 0.499 GB, free: 4.445 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001872/0.001872, allocations: 95.86 kB / 0.6821 GB, free: 6.969 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4135/0.4154, allocations: 86.97 MB / 0.7671 GB, free: 3.93 MB / 0.5294 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u): time 0.6357/1.051, allocations: 300.4 MB / 1.06 GB, free: 44.95 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.05339/1.105, allocations: 50.05 MB / 1.109 GB, free: 11.48 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.01256/1.117, allocations: 294.2 kB / 1.11 GB, free: 11.19 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.01069/1.128, allocations: 3.412 MB / 1.113 GB, free: 7.758 MB / 0.7325 GB Notification: Performance of NFTyping.typeBindings: time 0.02606/1.154, allocations: 9.046 MB / 1.122 GB, free: 14.68 MB / 0.7481 GB Notification: Performance of NFTyping.typeClassSections: time 0.01579/1.17, allocations: 6.639 MB / 1.128 GB, free: 8.066 MB / 0.7481 GB Notification: Performance of NFFlatten.flatten: time 0.02498/1.195, allocations: 18.49 MB / 1.146 GB, free: 5.516 MB / 0.7637 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01039/1.205, allocations: 5.839 MB / 1.152 GB, free: 15.58 MB / 0.7794 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01666/1.222, allocations: 7.55 MB / 1.159 GB, free: 8.031 MB / 0.7794 GB Notification: Performance of NFSimplifyModel.simplify: time 0.009059/1.231, allocations: 5.085 MB / 1.164 GB, free: 2.926 MB / 0.7794 GB Notification: Performance of NFPackage.collectConstants: time 0.002466/1.233, allocations: 0.5664 MB / 1.165 GB, free: 2.359 MB / 0.7794 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01166/1.245, allocations: 4.383 MB / 1.169 GB, free: 13.97 MB / 0.795 GB Notification: Performance of NFScalarize.scalarize: time 0.002597/1.248, allocations: 1.502 MB / 1.171 GB, free: 12.46 MB / 0.795 GB Notification: Performance of NFVerifyModel.verify: time 0.007158/1.255, allocations: 3.74 MB / 1.174 GB, free: 8.703 MB / 0.795 GB Notification: Performance of NFConvertDAE.convert: time 0.01982/1.275, allocations: 10.44 MB / 1.184 GB, free: 14.24 MB / 0.8106 GB Notification: Performance of FrontEnd - DAE generated: time 6.513e-06/1.275, allocations: 0 / 1.184 GB, free: 14.24 MB / 0.8106 GB Notification: Performance of FrontEnd: time 4.949e-06/1.275, allocations: 0 / 1.184 GB, free: 14.24 MB / 0.8106 GB Notification: Performance of Transformations before backend: time 0.0003779/1.275, allocations: 7.938 kB / 1.184 GB, free: 14.23 MB / 0.8106 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1035 * Number of variables: 1035 Notification: Performance of Generate backend data structure: time 0.01737/1.293, allocations: 7.482 MB / 1.192 GB, free: 6.605 MB / 0.8106 GB Notification: Performance of prepare preOptimizeDAE: time 4.137e-05/1.293, allocations: 12.03 kB / 1.192 GB, free: 6.594 MB / 0.8106 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003004/1.296, allocations: 0.7841 MB / 1.193 GB, free: 5.801 MB / 0.8106 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01177/1.307, allocations: 5.353 MB / 1.198 GB, free: 380 kB / 0.8106 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003072/1.308, allocations: 316.1 kB / 1.198 GB, free: 60 kB / 0.8106 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001033/1.309, allocations: 435.9 kB / 1.198 GB, free: 15.63 MB / 0.8262 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00953/1.318, allocations: 4.389 MB / 1.203 GB, free: 10.96 MB / 0.8262 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001229/1.318, allocations: 15.78 kB / 1.203 GB, free: 10.95 MB / 0.8262 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0005694/1.319, allocations: 172 kB / 1.203 GB, free: 10.78 MB / 0.8262 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001153/1.319, allocations: 116 kB / 1.203 GB, free: 10.67 MB / 0.8262 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.005827/1.325, allocations: 2.965 MB / 1.206 GB, free: 7.699 MB / 0.8262 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 0.02789/1.353, allocations: 25.13 MB / 1.23 GB, free: 12.53 MB / 0.8575 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003094/1.356, allocations: 2.764 MB / 1.233 GB, free: 9.559 MB / 0.8575 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001419/1.358, allocations: 0.9915 MB / 1.234 GB, free: 8.574 MB / 0.8575 GB Notification: Performance of preOpt evalFunc (simulation): time 0.002949/1.36, allocations: 3.908 MB / 1.238 GB, free: 3.797 MB / 0.8575 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.943e-05/1.361, allocations: 60.56 kB / 1.238 GB, free: 3.73 MB / 0.8575 GB Notification: Performance of pre-optimization done (n=217): time 5.541e-06/1.361, allocations: 0 / 1.238 GB, free: 3.73 MB / 0.8575 GB Notification: Performance of matching and sorting (n=217): time 0.01131/1.372, allocations: 4.08 MB / 1.242 GB, free: 15.55 MB / 0.8731 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.52e-05/1.372, allocations: 73.41 kB / 1.242 GB, free: 15.47 MB / 0.8731 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.007348/1.379, allocations: 4.299 MB / 1.246 GB, free: 11.19 MB / 0.8731 GB Notification: Performance of collectPreVariables (initialization): time 0.000366/1.38, allocations: 81.7 kB / 1.246 GB, free: 11.11 MB / 0.8731 GB Notification: Performance of collectInitialEqns (initialization): time 0.002256/1.382, allocations: 2.775 MB / 1.249 GB, free: 8.305 MB / 0.8731 GB Notification: Performance of collectInitialBindings (initialization): time 0.0008692/1.383, allocations: 0.7625 MB / 1.25 GB, free: 7.531 MB / 0.8731 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0009426/1.384, allocations: 0.5685 MB / 1.25 GB, free: 6.957 MB / 0.8731 GB Notification: Performance of setup shared object (initialization): time 0.0001035/1.384, allocations: 309.1 kB / 1.251 GB, free: 6.652 MB / 0.8731 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001382/1.385, allocations: 0.8231 MB / 1.251 GB, free: 5.82 MB / 0.8731 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002232/1.388, allocations: 1.814 MB / 1.253 GB, free: 3.57 MB / 0.8731 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003588/1.391, allocations: 2.513 MB / 1.256 GB, free: 0.7305 MB / 0.8731 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.641e-05/1.391, allocations: 8 kB / 1.256 GB, free: 0.7227 MB / 0.8731 GB Notification: Performance of matching and sorting (n=365) (initialization): time 0.007697/1.399, allocations: 3.563 MB / 1.259 GB, free: 13.09 MB / 0.8887 GB Notification: Performance of prepare postOptimizeDAE: time 2.799e-05/1.399, allocations: 20.03 kB / 1.259 GB, free: 13.07 MB / 0.8887 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.719e-05/1.399, allocations: 20 kB / 1.259 GB, free: 13.05 MB / 0.8887 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002457/1.401, allocations: 0.5845 MB / 1.26 GB, free: 12.46 MB / 0.8887 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001616/1.403, allocations: 0.5538 MB / 1.26 GB, free: 11.9 MB / 0.8887 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0021/1.405, allocations: 2.693 MB / 1.263 GB, free: 9.109 MB / 0.8887 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003141/1.408, allocations: 325 kB / 1.263 GB, free: 8.789 MB / 0.8887 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002393/1.409, allocations: 140 kB / 1.263 GB, free: 8.652 MB / 0.8887 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002775/1.411, allocations: 1.578 MB / 1.265 GB, free: 7.07 MB / 0.8887 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002047/1.413, allocations: 1.791 MB / 1.267 GB, free: 4.844 MB / 0.8887 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003362/1.417, allocations: 2.467 MB / 1.269 GB, free: 2.043 MB / 0.8887 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.635e-05/1.417, allocations: 4 kB / 1.269 GB, free: 2.039 MB / 0.8887 GB Notification: Performance of matching and sorting (n=365) (initialization_lambda0): time 0.006388/1.423, allocations: 3.306 MB / 1.272 GB, free: 14.67 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 3.448e-05/1.423, allocations: 16 kB / 1.272 GB, free: 14.65 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.746e-05/1.423, allocations: 23.94 kB / 1.272 GB, free: 14.63 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009331/1.424, allocations: 367.5 kB / 1.273 GB, free: 14.26 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001617/1.426, allocations: 0.5577 MB / 1.273 GB, free: 13.7 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007805/1.434, allocations: 8.441 MB / 1.282 GB, free: 4.66 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00331/1.437, allocations: 295 kB / 1.282 GB, free: 4.371 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.00023/1.437, allocations: 135.9 kB / 1.282 GB, free: 4.238 MB / 0.9044 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 97 * 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 (323): * Single equations (assignments): 319 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * 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): 4 systems {(1,12), (1,9), (1,12), (1,9)} Notification: Performance of prepare postOptimizeDAE: time 0.0006182/1.438, allocations: 375.8 kB / 1.282 GB, free: 3.863 MB / 0.9044 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001495/1.439, allocations: 0.5055 MB / 1.283 GB, free: 3.352 MB / 0.9044 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006361/1.446, allocations: 3.573 MB / 1.286 GB, free: 15.71 MB / 0.92 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.007e-05/1.446, allocations: 31.98 kB / 1.286 GB, free: 15.68 MB / 0.92 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.773e-06/1.446, allocations: 4 kB / 1.286 GB, free: 15.68 MB / 0.92 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003713/1.449, allocations: 2.446 MB / 1.289 GB, free: 13.17 MB / 0.92 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 postOpt removeSimpleEquations (simulation): time 0.01352/1.463, allocations: 8.216 MB / 1.297 GB, free: 4.68 MB / 0.92 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.686e-06/1.463, allocations: 0 / 1.297 GB, free: 4.68 MB / 0.92 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001269/1.464, allocations: 359.6 kB / 1.297 GB, free: 4.328 MB / 0.92 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0007097/1.465, allocations: 310.9 kB / 1.297 GB, free: 4.012 MB / 0.92 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001487/1.465, allocations: 63.97 kB / 1.297 GB, free: 3.949 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001668/1.467, allocations: 2.494 MB / 1.3 GB, free: 1.352 MB / 0.92 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.127e-06/1.467, allocations: 7.938 kB / 1.3 GB, free: 1.344 MB / 0.92 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.3527/1.82, allocations: 4.334 MB / 1.304 GB, free: 366 MB / 0.92 GB Notification: Performance of postOpt removeConstants (simulation): time 0.00207/1.822, allocations: 0.8822 MB / 1.305 GB, free: 365.8 MB / 0.92 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005509/1.822, allocations: 43.8 kB / 1.305 GB, free: 365.8 MB / 0.92 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002066/1.824, allocations: 120.1 kB / 1.305 GB, free: 365.8 MB / 0.92 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002571/1.825, allocations: 153.1 kB / 1.305 GB, free: 365.7 MB / 0.92 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001951/1.825, allocations: 112 kB / 1.305 GB, free: 365.7 MB / 0.92 GB Notification: Performance of sorting global known variables: time 0.004516/1.829, allocations: 2.844 MB / 1.308 GB, free: 364.7 MB / 0.92 GB Notification: Performance of sort global known variables: time 1.3e-07/1.829, allocations: 0 / 1.308 GB, free: 364.7 MB / 0.92 GB Notification: Performance of remove unused functions: time 0.00698/1.836, allocations: 3.236 MB / 1.311 GB, free: 364.4 MB / 0.92 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 10 (hea1.vol.dynBal.U,hea2.vol.dynBal.U,hea3.vol.dynBal.U,hea4.vol.dynBal.U,mix1.dynBal.U,hea5.vol.dynBal.U,hea6.vol.dynBal.U,hea7.vol.dynBal.U,hea8.vol.dynBal.U,mix2.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 (219): * Single equations (assignments): 181 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 34 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * 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): 4 systems {(1,9), (1,7), (1,9), (1,7)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002374/1.839, allocations: 1.521 MB / 1.313 GB, free: 364.2 MB / 0.92 GB Notification: Performance of simCode: created initialization part: time 0.00605/1.845, allocations: 4.427 MB / 1.317 GB, free: 362.4 MB / 0.92 GB Notification: Performance of simCode: created event and clocks part: time 6.503e-06/1.845, allocations: 7.906 kB / 1.317 GB, free: 362.4 MB / 0.92 GB Notification: Performance of simCode: created simulation system equations: time 0.001584/1.846, allocations: 1.232 MB / 1.318 GB, free: 362 MB / 0.92 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01053/1.857, allocations: 2.638 MB / 1.321 GB, free: 361.3 MB / 0.92 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01159/1.868, allocations: 9.088 MB / 1.33 GB, free: 357.1 MB / 0.92 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001638/1.87, allocations: 2.863 MB / 1.333 GB, free: 356.2 MB / 0.92 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001028/1.871, allocations: 433.5 kB / 1.333 GB, free: 356.2 MB / 0.92 GB Notification: Performance of SimCode: time 5.61e-07/1.871, allocations: 0 / 1.333 GB, free: 356.2 MB / 0.92 GB Notification: Performance of Templates: time 0.1406/2.012, allocations: 193.3 MB / 1.522 GB, free: 167.3 MB / 0.92 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u.sim & ./BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u.pipe 2>&1)