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 0.001603/0.001603, allocations: 109.5 kB / 16.41 MB, free: 6.453 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001478/0.001478, allocations: 189.7 kB / 17.34 MB, free: 5.719 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.273/1.273, allocations: 222.9 MB / 241 MB, free: 15.14 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002243/0.002242, allocations: 284.6 kB / 291.5 MB, free: 14.45 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.898/0.898, allocations: 169.3 MB / 0.499 GB, free: 4.426 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001866/0.001867, allocations: 87.86 kB / 0.6821 GB, free: 6.926 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4203/0.4222, allocations: 86.97 MB / 0.7671 GB, free: 3.895 MB / 0.5294 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Interfaces.Examples.HeaterCooler_u): time 0.6276/1.05, allocations: 300.4 MB / 1.06 GB, free: 44.91 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.05271/1.103, allocations: 50.04 MB / 1.109 GB, free: 11.42 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.01005/1.113, allocations: 302.2 kB / 1.11 GB, free: 11.12 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.01098/1.124, allocations: 3.419 MB / 1.113 GB, free: 7.684 MB / 0.7325 GB Notification: Performance of NFTyping.typeBindings: time 0.02793/1.152, allocations: 9.042 MB / 1.122 GB, free: 14.61 MB / 0.7481 GB Notification: Performance of NFTyping.typeClassSections: time 0.01666/1.168, allocations: 6.644 MB / 1.128 GB, free: 7.992 MB / 0.7481 GB Notification: Performance of NFFlatten.flatten: time 0.02547/1.194, allocations: 18.48 MB / 1.146 GB, free: 5.453 MB / 0.7637 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01167/1.206, allocations: 5.846 MB / 1.152 GB, free: 15.51 MB / 0.7794 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01858/1.224, allocations: 7.538 MB / 1.159 GB, free: 7.973 MB / 0.7794 GB Notification: Performance of NFSimplifyModel.simplify: time 0.009228/1.233, allocations: 5.089 MB / 1.164 GB, free: 2.863 MB / 0.7794 GB Notification: Performance of NFPackage.collectConstants: time 0.002845/1.236, allocations: 0.5664 MB / 1.165 GB, free: 2.297 MB / 0.7794 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0125/1.249, allocations: 4.379 MB / 1.169 GB, free: 13.91 MB / 0.795 GB Notification: Performance of NFScalarize.scalarize: time 0.002869/1.252, allocations: 1.498 MB / 1.171 GB, free: 12.41 MB / 0.795 GB Notification: Performance of NFVerifyModel.verify: time 0.008095/1.26, allocations: 3.74 MB / 1.174 GB, free: 8.648 MB / 0.795 GB Notification: Performance of NFConvertDAE.convert: time 0.02046/1.28, allocations: 10.44 MB / 1.184 GB, free: 14.18 MB / 0.8106 GB Notification: Performance of FrontEnd - DAE generated: time 8.306e-06/1.28, allocations: 3.984 kB / 1.184 GB, free: 14.18 MB / 0.8106 GB Notification: Performance of FrontEnd: time 1.783e-06/1.28, allocations: 3.938 kB / 1.184 GB, free: 14.17 MB / 0.8106 GB Notification: Performance of Transformations before backend: time 0.0003464/1.281, allocations: 0 / 1.184 GB, free: 14.17 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 0.01746/1.298, allocations: 7.474 MB / 1.192 GB, free: 6.555 MB / 0.8106 GB Notification: Performance of prepare preOptimizeDAE: time 5.446e-05/1.298, allocations: 16.02 kB / 1.192 GB, free: 6.539 MB / 0.8106 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003494/1.302, allocations: 0.7802 MB / 1.193 GB, free: 5.75 MB / 0.8106 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01239/1.314, allocations: 5.365 MB / 1.198 GB, free: 316 kB / 0.8106 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003863/1.315, allocations: 320.2 kB / 1.198 GB, free: 15.99 MB / 0.8262 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001282/1.316, allocations: 435.8 kB / 1.199 GB, free: 15.57 MB / 0.8262 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.009884/1.326, allocations: 4.381 MB / 1.203 GB, free: 10.91 MB / 0.8262 GB Notification: Performance of preOpt findStateOrder (simulation): time 9.002e-05/1.326, allocations: 23.77 kB / 1.203 GB, free: 10.88 MB / 0.8262 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004062/1.326, allocations: 172 kB / 1.203 GB, free: 10.71 MB / 0.8262 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001167/1.327, allocations: 116 kB / 1.203 GB, free: 10.6 MB / 0.8262 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.005309/1.332, allocations: 2.965 MB / 1.206 GB, free: 7.633 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 0.02758/1.359, allocations: 25.13 MB / 1.231 GB, free: 12.46 MB / 0.8575 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003099/1.363, allocations: 2.752 MB / 1.233 GB, free: 9.504 MB / 0.8575 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001336/1.364, allocations: 1.003 MB / 1.234 GB, free: 8.504 MB / 0.8575 GB Notification: Performance of preOpt evalFunc (simulation): time 0.002718/1.367, allocations: 3.904 MB / 1.238 GB, free: 3.73 MB / 0.8575 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 7.08e-05/1.367, allocations: 64.56 kB / 1.238 GB, free: 3.66 MB / 0.8575 GB Notification: Performance of pre-optimization done (n=217): time 3.958e-06/1.367, allocations: 0 / 1.238 GB, free: 3.66 MB / 0.8575 GB Notification: Performance of matching and sorting (n=217): time 0.0103/1.377, allocations: 4.072 MB / 1.242 GB, free: 15.49 MB / 0.8731 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.881e-05/1.377, allocations: 73.41 kB / 1.242 GB, free: 15.4 MB / 0.8731 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.006887/1.384, allocations: 4.299 MB / 1.246 GB, free: 11.12 MB / 0.8731 GB Notification: Performance of collectPreVariables (initialization): time 0.0005209/1.385, allocations: 77.7 kB / 1.246 GB, free: 11.04 MB / 0.8731 GB Notification: Performance of collectInitialEqns (initialization): time 0.002075/1.387, allocations: 2.779 MB / 1.249 GB, free: 8.238 MB / 0.8731 GB Notification: Performance of collectInitialBindings (initialization): time 0.0009671/1.388, allocations: 0.7664 MB / 1.25 GB, free: 7.461 MB / 0.8731 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0007866/1.388, allocations: 0.5685 MB / 1.25 GB, free: 6.887 MB / 0.8731 GB Notification: Performance of setup shared object (initialization): time 0.0001113/1.389, allocations: 309 kB / 1.251 GB, free: 6.582 MB / 0.8731 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001337/1.39, allocations: 0.8192 MB / 1.251 GB, free: 5.754 MB / 0.8731 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002046/1.392, allocations: 1.814 MB / 1.253 GB, free: 3.504 MB / 0.8731 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003407/1.395, allocations: 2.517 MB / 1.256 GB, free: 0.6602 MB / 0.8731 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.49e-05/1.395, allocations: 4 kB / 1.256 GB, free: 0.6562 MB / 0.8731 GB Notification: Performance of matching and sorting (n=365) (initialization): time 0.007938/1.403, allocations: 3.57 MB / 1.259 GB, free: 13.02 MB / 0.8887 GB Notification: Performance of prepare postOptimizeDAE: time 3.174e-05/1.403, allocations: 12 kB / 1.259 GB, free: 13.01 MB / 0.8887 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.451e-05/1.403, allocations: 20 kB / 1.259 GB, free: 12.99 MB / 0.8887 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002441/1.406, allocations: 0.5995 MB / 1.26 GB, free: 12.38 MB / 0.8887 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001802/1.408, allocations: 0.5538 MB / 1.26 GB, free: 11.82 MB / 0.8887 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002066/1.41, allocations: 2.681 MB / 1.263 GB, free: 9.039 MB / 0.8887 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003645/1.413, allocations: 329.2 kB / 1.263 GB, free: 8.715 MB / 0.8887 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003043/1.414, allocations: 140 kB / 1.263 GB, free: 8.578 MB / 0.8887 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.003003/1.417, allocations: 1.566 MB / 1.265 GB, free: 7.008 MB / 0.8887 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001997/1.419, allocations: 1.795 MB / 1.267 GB, free: 4.777 MB / 0.8887 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003214/1.422, allocations: 2.463 MB / 1.269 GB, free: 1.98 MB / 0.8887 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.266e-05/1.422, allocations: 8 kB / 1.269 GB, free: 1.973 MB / 0.8887 GB Notification: Performance of matching and sorting (n=365) (initialization_lambda0): time 0.006627/1.429, allocations: 3.306 MB / 1.272 GB, free: 14.6 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 2.473e-05/1.429, allocations: 12 kB / 1.272 GB, free: 14.59 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.433e-05/1.429, allocations: 24.16 kB / 1.272 GB, free: 14.57 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009396/1.43, allocations: 374.9 kB / 1.273 GB, free: 14.19 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001654/1.431, allocations: 0.5577 MB / 1.273 GB, free: 13.63 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007397/1.439, allocations: 8.451 MB / 1.282 GB, free: 4.582 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003868/1.443, allocations: 299 kB / 1.282 GB, free: 4.289 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003896/1.443, allocations: 136 kB / 1.282 GB, free: 4.156 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 0.0006672/1.444, allocations: 363.8 kB / 1.282 GB, free: 3.793 MB / 0.9044 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001493/1.445, allocations: 0.5055 MB / 1.283 GB, free: 3.281 MB / 0.9044 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005972/1.451, allocations: 3.576 MB / 1.286 GB, free: 15.64 MB / 0.92 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.012e-05/1.451, allocations: 39.97 kB / 1.286 GB, free: 15.6 MB / 0.92 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.29e-06/1.451, allocations: 0 / 1.286 GB, free: 15.6 MB / 0.92 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003545/1.455, allocations: 2.439 MB / 1.289 GB, free: 13.11 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 0.01306/1.468, allocations: 8.212 MB / 1.297 GB, free: 4.617 MB / 0.92 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.032e-05/1.468, allocations: 0 / 1.297 GB, free: 4.617 MB / 0.92 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001243/1.469, allocations: 367.6 kB / 1.297 GB, free: 4.258 MB / 0.92 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0006832/1.47, allocations: 306.8 kB / 1.297 GB, free: 3.945 MB / 0.92 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001248/1.47, allocations: 63.95 kB / 1.297 GB, free: 3.883 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001619/1.472, allocations: 2.491 MB / 1.3 GB, free: 1.289 MB / 0.92 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.853e-06/1.472, allocations: 3.938 kB / 1.3 GB, free: 1.285 MB / 0.92 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.3655/1.837, allocations: 4.333 MB / 1.304 GB, free: 367.3 MB / 0.92 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002465/1.84, allocations: 0.8903 MB / 1.305 GB, free: 367.1 MB / 0.92 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0008676/1.841, allocations: 44.06 kB / 1.305 GB, free: 367 MB / 0.92 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002444/1.843, allocations: 117.6 kB / 1.305 GB, free: 367 MB / 0.92 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002727/1.843, allocations: 156.6 kB / 1.305 GB, free: 367 MB / 0.92 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000229/1.844, allocations: 112.5 kB / 1.305 GB, free: 367 MB / 0.92 GB Notification: Performance of sorting global known variables: time 0.004845/1.848, allocations: 2.845 MB / 1.308 GB, free: 366 MB / 0.92 GB Notification: Performance of sort global known variables: time 1.7e-07/1.848, allocations: 0 / 1.308 GB, free: 366 MB / 0.92 GB Notification: Performance of remove unused functions: time 0.00765/1.856, allocations: 3.234 MB / 1.311 GB, free: 365.7 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 0.002496/1.859, allocations: 1.521 MB / 1.313 GB, free: 365.4 MB / 0.92 GB Notification: Performance of simCode: created initialization part: time 0.006409/1.865, allocations: 4.428 MB / 1.317 GB, free: 363.6 MB / 0.92 GB Notification: Performance of simCode: created event and clocks part: time 8.085e-06/1.865, allocations: 5.469 kB / 1.317 GB, free: 363.6 MB / 0.92 GB Notification: Performance of simCode: created simulation system equations: time 0.001786/1.867, allocations: 1.231 MB / 1.318 GB, free: 363.2 MB / 0.92 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01235/1.879, allocations: 2.633 MB / 1.321 GB, free: 362.5 MB / 0.92 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01316/1.892, allocations: 9.098 MB / 1.33 GB, free: 358.3 MB / 0.92 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00175/1.894, allocations: 2.864 MB / 1.333 GB, free: 357.4 MB / 0.92 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00117/1.895, allocations: 430.7 kB / 1.333 GB, free: 357.4 MB / 0.92 GB Notification: Performance of SimCode: time 1.002e-06/1.895, allocations: 0 / 1.333 GB, free: 357.4 MB / 0.92 GB Notification: Performance of Templates: time 0.1534/2.049, allocations: 193.3 MB / 1.522 GB, free: 168.7 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)