Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8.0.0_Buildings.Fluid.HeatExchangers.Examples.AirHeater_u.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/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 8.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.HeatExchangers.Examples.AirHeater_u,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_HeatExchangers_Examples_AirHeater_u",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.HeatExchangers.Examples.AirHeater_u,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_HeatExchangers_Examples_AirHeater_u",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo): time 1.671/1.671, allocations: 287.4 MB / 302.5 MB, free: 8.281 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001035/0.001035, allocations: 166.3 kB / 371.1 MB, free: 10.86 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.682/1.682, allocations: 205.4 MB / 0.6298 GB, free: 10.58 MB / 458.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0009266/0.0009264, allocations: 94.28 kB / 0.7431 GB, free: 6.562 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0006578/0.000658, allocations: 16.3 kB / 0.8662 GB, free: 140.4 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3112/0.3119, allocations: 115.3 MB / 0.9787 GB, free: 28.12 MB / 0.6198 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Examples.AirHeater_u): time 0.9756/1.288, allocations: 237.7 MB / 1.211 GB, free: 9.578 MB / 0.7448 GB Notification: Performance of NFInst.instExpressions: time 0.02996/1.318, allocations: 18.35 MB / 1.229 GB, free: 10.97 MB / 0.7605 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004459/1.322, allocations: 79.5 kB / 1.229 GB, free: 10.94 MB / 0.7605 GB Notification: Performance of NFTyping.typeComponents: time 0.004325/1.327, allocations: 0.9548 MB / 1.23 GB, free: 10.16 MB / 0.7605 GB Notification: Performance of NFTyping.typeBindings: time 0.01141/1.338, allocations: 2.924 MB / 1.233 GB, free: 7.723 MB / 0.7605 GB Notification: Performance of NFTyping.typeClassSections: time 0.01001/1.348, allocations: 2.878 MB / 1.235 GB, free: 4.871 MB / 0.7605 GB Notification: Performance of NFFlatten.flatten: time 0.01045/1.359, allocations: 6.721 MB / 1.242 GB, free: 14.13 MB / 0.7761 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004458/1.363, allocations: 1.759 MB / 1.244 GB, free: 12.33 MB / 0.7761 GB Notification: Performance of NFEvalConstants.evaluate: time 0.006892/1.37, allocations: 2.186 MB / 1.246 GB, free: 10.14 MB / 0.7761 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003859/1.374, allocations: 1.681 MB / 1.248 GB, free: 8.449 MB / 0.7761 GB Notification: Performance of NFPackage.collectConstants: time 0.0009698/1.375, allocations: 96 kB / 1.248 GB, free: 8.355 MB / 0.7761 GB Notification: Performance of NFFlatten.collectFunctions: time 0.007704/1.383, allocations: 2.487 MB / 1.25 GB, free: 5.863 MB / 0.7761 GB Notification: Performance of NFScalarize.scalarize: time 0.00168/1.384, allocations: 0.7202 MB / 1.251 GB, free: 5.141 MB / 0.7761 GB Notification: Performance of NFVerifyModel.verify: time 0.001724/1.386, allocations: 0.516 MB / 1.251 GB, free: 4.617 MB / 0.7761 GB Notification: Performance of NFConvertDAE.convert: time 0.007176/1.393, allocations: 3.577 MB / 1.255 GB, free: 1.031 MB / 0.7761 GB Notification: Performance of FrontEnd - DAE generated: time 7.555e-06/1.393, allocations: 0 / 1.255 GB, free: 1.031 MB / 0.7761 GB Notification: Performance of FrontEnd: time 3.086e-06/1.393, allocations: 0 / 1.255 GB, free: 1.031 MB / 0.7761 GB Notification: Performance of Transformations before backend: time 0.0001643/1.394, allocations: 0 / 1.255 GB, free: 1.031 MB / 0.7761 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 378 * Number of variables: 378 Notification: Performance of Generate backend data structure: time 0.006609/1.4, allocations: 2.702 MB / 1.257 GB, free: 14.25 MB / 0.7917 GB Notification: Performance of prepare preOptimizeDAE: time 4.692e-05/1.4, allocations: 8.031 kB / 1.257 GB, free: 14.25 MB / 0.7917 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0007581/1.401, allocations: 219.5 kB / 1.258 GB, free: 14.02 MB / 0.7917 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005378/1.406, allocations: 0.8203 MB / 1.258 GB, free: 13.2 MB / 0.7917 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004831/1.411, allocations: 1.798 MB / 1.26 GB, free: 11.35 MB / 0.7917 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004993/1.412, allocations: 186.9 kB / 1.26 GB, free: 11.16 MB / 0.7917 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0006046/1.412, allocations: 160 kB / 1.261 GB, free: 11.01 MB / 0.7917 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005087/1.418, allocations: 1.874 MB / 1.262 GB, free: 9.066 MB / 0.7917 GB Notification: Performance of preOpt findStateOrder (simulation): time 5.76e-05/1.418, allocations: 0 / 1.262 GB, free: 9.066 MB / 0.7917 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002921/1.418, allocations: 64 kB / 1.262 GB, free: 9.004 MB / 0.7917 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.916e-05/1.418, allocations: 54.91 kB / 1.262 GB, free: 8.949 MB / 0.7917 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004144/1.422, allocations: 1.612 MB / 1.264 GB, free: 7.332 MB / 0.7917 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 0.01576/1.438, allocations: 8.357 MB / 1.272 GB, free: 14.34 MB / 0.8073 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003166/1.441, allocations: 1.836 MB / 1.274 GB, free: 12.36 MB / 0.8073 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001548/1.443, allocations: 0.6912 MB / 1.275 GB, free: 11.67 MB / 0.8073 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005599/1.443, allocations: 239.1 kB / 1.275 GB, free: 11.39 MB / 0.8073 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001651/1.445, allocations: 0.7 MB / 1.276 GB, free: 10.68 MB / 0.8073 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001129/1.446, allocations: 119.1 kB / 1.276 GB, free: 10.57 MB / 0.8073 GB Notification: Performance of pre-optimization done (n=101): time 7.214e-06/1.446, allocations: 0 / 1.276 GB, free: 10.57 MB / 0.8073 GB Notification: Performance of matching and sorting (n=104): time 0.01047/1.457, allocations: 3.759 MB / 1.279 GB, free: 6.73 MB / 0.8073 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001088/1.457, allocations: 141.5 kB / 1.279 GB, free: 6.559 MB / 0.8073 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003387/1.46, allocations: 1.597 MB / 1.281 GB, free: 4.918 MB / 0.8073 GB Notification: Performance of collectPreVariables (initialization): time 0.0002225/1.46, allocations: 53.69 kB / 1.281 GB, free: 4.859 MB / 0.8073 GB Notification: Performance of collectInitialEqns (initialization): time 0.001081/1.462, allocations: 0.9561 MB / 1.282 GB, free: 3.891 MB / 0.8073 GB Notification: Performance of collectInitialBindings (initialization): time 0.0004786/1.462, allocations: 374.6 kB / 1.282 GB, free: 3.52 MB / 0.8073 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001041/1.462, allocations: 24 kB / 1.282 GB, free: 3.496 MB / 0.8073 GB Notification: Performance of setup shared object (initialization): time 0.0001679/1.462, allocations: 361.9 kB / 1.283 GB, free: 3.137 MB / 0.8073 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001389/1.464, allocations: 0.5647 MB / 1.283 GB, free: 2.57 MB / 0.8073 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001694/1.465, allocations: 0.9381 MB / 1.284 GB, free: 1.488 MB / 0.8073 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: vol.dynBal.medium.p = vol.dynBal.p_start (hea.vol.dynBal.p_start = vol.dynBal.p_start) Notification: Performance of analyzeInitialSystem (initialization): time 0.01677/1.482, allocations: 4.689 MB / 1.289 GB, free: 12.66 MB / 0.823 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.135e-05/1.482, allocations: 0 / 1.289 GB, free: 12.66 MB / 0.823 GB Notification: Performance of matching and sorting (n=160) (initialization): time 0.004441/1.487, allocations: 1.753 MB / 1.291 GB, free: 10.89 MB / 0.823 GB Notification: Performance of prepare postOptimizeDAE: time 0.000292/1.487, allocations: 342.6 kB / 1.291 GB, free: 10.45 MB / 0.823 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.414e-05/1.487, allocations: 11.98 kB / 1.291 GB, free: 10.43 MB / 0.823 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002344/1.487, allocations: 48.84 kB / 1.291 GB, free: 10.38 MB / 0.823 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001414/1.489, allocations: 307.5 kB / 1.291 GB, free: 10.08 MB / 0.823 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001487/1.49, allocations: 1.526 MB / 1.293 GB, free: 8.426 MB / 0.823 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002362/1.493, allocations: 189.7 kB / 1.293 GB, free: 8.242 MB / 0.823 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000237/1.493, allocations: 55.97 kB / 1.293 GB, free: 8.188 MB / 0.823 GB Notification: Performance of prepare postOptimizeDAE: time 1.193e-05/1.493, allocations: 8 kB / 1.293 GB, free: 8.18 MB / 0.823 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.003706/1.497, allocations: 1.566 MB / 1.294 GB, free: 6.602 MB / 0.823 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.379e-05/1.497, allocations: 8 kB / 1.294 GB, free: 6.594 MB / 0.823 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001905/1.497, allocations: 52.77 kB / 1.295 GB, free: 6.539 MB / 0.823 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001325/1.498, allocations: 303.9 kB / 1.295 GB, free: 6.242 MB / 0.823 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00142/1.5, allocations: 1.51 MB / 1.296 GB, free: 4.598 MB / 0.823 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002371/1.502, allocations: 194.4 kB / 1.296 GB, free: 4.41 MB / 0.823 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002071/1.502, allocations: 52 kB / 1.297 GB, free: 4.359 MB / 0.823 GB Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization sytem: vol.dynBal.medium.p = vol.dynBal.p_start. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 33 * Number of states: 0 () * Number of discrete variables: 6 ($PRE.TSet.T_start,$PRE.TSet.count,$whenCondition1,TSet.T_start,TSet.count,conPI.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (152): * Single equations (assignments): 146 * Array equations: 3 * Algorithm blocks: 1 * Record equations: 1 * 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: 1 {(1,100.0%) 3} * Non-linear torn systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.001501/1.504, allocations: 0.5865 MB / 1.297 GB, free: 3.762 MB / 0.823 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000635/1.504, allocations: 193.6 kB / 1.297 GB, free: 3.57 MB / 0.823 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003883/1.508, allocations: 1.479 MB / 1.299 GB, free: 2.078 MB / 0.823 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.193e-05/1.508, allocations: 8.141 kB / 1.299 GB, free: 2.07 MB / 0.823 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.116e-05/1.508, allocations: 7.938 kB / 1.299 GB, free: 2.062 MB / 0.823 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002746/1.511, allocations: 1.223 MB / 1.3 GB, free: 0.8203 MB / 0.823 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 0.00903/1.52, allocations: 3.644 MB / 1.303 GB, free: 13.05 MB / 0.8386 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.065e-05/1.52, allocations: 8.062 kB / 1.303 GB, free: 13.05 MB / 0.8386 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001263/1.522, allocations: 247.7 kB / 1.304 GB, free: 12.8 MB / 0.8386 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003218/1.522, allocations: 77.66 kB / 1.304 GB, free: 12.72 MB / 0.8386 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001206/1.522, allocations: 23.98 kB / 1.304 GB, free: 12.7 MB / 0.8386 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002363/1.524, allocations: 2.768 MB / 1.307 GB, free: 9.664 MB / 0.8386 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.685e-06/1.524, allocations: 7.969 kB / 1.307 GB, free: 9.656 MB / 0.8386 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004875/1.529, allocations: 2.259 MB / 1.309 GB, free: 7.359 MB / 0.8386 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001197/1.531, allocations: 386.5 kB / 1.309 GB, free: 6.961 MB / 0.8386 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005278/1.531, allocations: 24 kB / 1.309 GB, free: 6.938 MB / 0.8386 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001989/1.533, allocations: 195.6 kB / 1.309 GB, free: 6.746 MB / 0.8386 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002204/1.533, allocations: 72.89 kB / 1.309 GB, free: 6.676 MB / 0.8386 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001156/1.534, allocations: 39.98 kB / 1.309 GB, free: 6.637 MB / 0.8386 GB Notification: Performance of sorting global known variables: time 0.002341/1.536, allocations: 1.075 MB / 1.31 GB, free: 5.539 MB / 0.8386 GB Notification: Performance of sort global known variables: time 1.81e-07/1.536, allocations: 0 / 1.31 GB, free: 5.539 MB / 0.8386 GB Notification: Performance of remove unused functions: time 0.004528/1.54, allocations: 0.9804 MB / 1.311 GB, free: 4.559 MB / 0.8386 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 9 (vol.dynBal.U,vol.dynBal.mXi[1],mov.filter.x[1],mov.filter.x[2],conPI.I.y,THeaOut.T,hea.vol.dynBal.U,hea.vol.dynBal.m,hea.vol.dynBal.mXi[1]) * 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 (102): * Single equations (assignments): 98 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * 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: 2 {(1,100.0%) 2,(1,100.0%) 2} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.006775/1.547, allocations: 3.111 MB / 1.314 GB, free: 1.41 MB / 0.8386 GB Notification: Performance of simCode: created initialization part: time 0.005941/1.553, allocations: 2.579 MB / 1.317 GB, free: 14.77 MB / 0.8542 GB Notification: Performance of simCode: created event and clocks part: time 1.253e-05/1.553, allocations: 384 / 1.317 GB, free: 14.77 MB / 0.8542 GB Notification: Performance of simCode: created simulation system equations: time 0.001866/1.555, allocations: 0.8742 MB / 1.318 GB, free: 13.87 MB / 0.8542 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.006428/1.562, allocations: 0.9767 MB / 1.319 GB, free: 12.9 MB / 0.8542 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03244/1.594, allocations: 13.06 MB / 1.332 GB, free: 14.95 MB / 0.8698 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001983/1.596, allocations: 1.59 MB / 1.333 GB, free: 13.33 MB / 0.8698 GB Notification: Performance of simCode: alias equations: time 0.003006/1.599, allocations: 0.5116 MB / 1.334 GB, free: 12.81 MB / 0.8698 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001614/1.601, allocations: 0.8351 MB / 1.334 GB, free: 11.98 MB / 0.8698 GB Notification: Performance of SimCode: time 1.132e-06/1.601, allocations: 0 / 1.334 GB, free: 11.98 MB / 0.8698 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.6374/2.238, allocations: 55.77 MB / 1.389 GB, free: 4.707 MB / 0.9167 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0003354/2.239, allocations: 243.8 kB / 1.389 GB, free: 4.383 MB / 0.9167 GB Notification: Performance of buildModelFMU: Generate platform static: time 4.139/6.378, allocations: 2.812 kB / 1.389 GB, free: 4.383 MB / 0.9167 GB (rm -f Buildings_8.0.0_Buildings.Fluid.HeatExchangers.Examples.AirHeater_u.pipe ; mkfifo Buildings_8.0.0_Buildings.Fluid.HeatExchangers.Examples.AirHeater_u.pipe ; head -c 1048576 < Buildings_8.0.0_Buildings.Fluid.HeatExchangers.Examples.AirHeater_u.pipe >> ../files/Buildings_8.0.0_Buildings.Fluid.HeatExchangers.Examples.AirHeater_u.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_8_0_0_Buildings_Fluid_HeatExchangers_Examples_AirHeater_u_fmu --startTime=0 --stopTime=172800 --timeout=50 --tolerance=1e-06 Buildings_8_0_0_Buildings_Fluid_HeatExchangers_Examples_AirHeater_u.fmu > Buildings_8.0.0_Buildings.Fluid.HeatExchangers.Examples.AirHeater_u.pipe 2>&1)