Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y.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.Chillers.Examples.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y") translateModel(BuildingSystems.Fluid.Chillers.Examples.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001542/0.001542, allocations: 103.1 kB / 16.27 MB, free: 5.965 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00148/0.00148, allocations: 191 kB / 17.2 MB, free: 5.59 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.361/1.361, allocations: 222.9 MB / 240.9 MB, free: 15.26 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002554/0.002554, allocations: 280.7 kB / 291.3 MB, free: 14.53 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 1.198/1.198, allocations: 178.6 MB / 0.5079 GB, free: 12.8 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.002741/0.002742, allocations: 99.84 kB / 0.6071 GB, free: 9.258 MB / 462.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1794/0.1822, allocations: 89.14 MB / 0.6941 GB, free: 40 kB / 0.5294 GB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Chillers.Examples.Carnot_y): time 0.3504/0.5327, allocations: 75.13 MB / 0.7675 GB, free: 3.273 MB / 0.545 GB Notification: Performance of NFInst.instExpressions: time 0.01739/0.5501, allocations: 12.74 MB / 0.78 GB, free: 10.11 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002322/0.5525, allocations: 65.84 kB / 0.78 GB, free: 10.09 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.002418/0.5549, allocations: 0.8271 MB / 0.7808 GB, free: 9.566 MB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.00705/0.562, allocations: 2.467 MB / 0.7832 GB, free: 8.074 MB / 0.5606 GB Notification: Performance of NFTyping.typeClassSections: time 0.003853/0.5659, allocations: 1.38 MB / 0.7846 GB, free: 7.285 MB / 0.5606 GB Notification: Performance of NFFlatten.flatten: time 0.006809/0.5727, allocations: 4.388 MB / 0.7889 GB, free: 5.098 MB / 0.5606 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002442/0.5752, allocations: 1.443 MB / 0.7903 GB, free: 4.398 MB / 0.5606 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004175/0.5794, allocations: 1.599 MB / 0.7918 GB, free: 3.617 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002486/0.5819, allocations: 1.206 MB / 0.793 GB, free: 3.043 MB / 0.5606 GB Notification: Performance of NFPackage.collectConstants: time 0.0003671/0.5823, allocations: 163.2 kB / 0.7932 GB, free: 3.043 MB / 0.5606 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003706/0.586, allocations: 1.403 MB / 0.7945 GB, free: 2.527 MB / 0.5606 GB Notification: Performance of NFScalarize.scalarize: time 0.0005554/0.5866, allocations: 396.1 kB / 0.7949 GB, free: 2.277 MB / 0.5606 GB Notification: Performance of NFVerifyModel.verify: time 0.00159/0.5882, allocations: 0.9062 MB / 0.7958 GB, free: 1.707 MB / 0.5606 GB Notification: Performance of NFConvertDAE.convert: time 0.005142/0.5933, allocations: 2.826 MB / 0.7986 GB, free: 0.6328 MB / 0.5606 GB Notification: Performance of FrontEnd - DAE generated: time 7.615e-06/0.5934, allocations: 0.5625 kB / 0.7986 GB, free: 0.6328 MB / 0.5606 GB Notification: Performance of FrontEnd: time 1.613e-06/0.5934, allocations: 0 / 0.7986 GB, free: 0.6328 MB / 0.5606 GB Notification: Performance of Transformations before backend: time 6.999e-05/0.5934, allocations: 1.375 kB / 0.7986 GB, free: 0.6328 MB / 0.5606 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 240 * Number of variables: 240 Notification: Performance of Generate backend data structure: time 0.004823/0.5983, allocations: 2.08 MB / 0.8006 GB, free: 15.27 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 3.922e-05/0.5983, allocations: 9.469 kB / 0.8006 GB, free: 15.27 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001001/0.5993, allocations: 231.3 kB / 0.8008 GB, free: 15.18 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003005/0.6024, allocations: 1.463 MB / 0.8023 GB, free: 14.26 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.406e-05/0.6024, allocations: 76.62 kB / 0.8023 GB, free: 14.23 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001593/0.6026, allocations: 101.8 kB / 0.8024 GB, free: 14.2 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00224/0.6049, allocations: 1.103 MB / 0.8035 GB, free: 13.7 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.647e-05/0.6049, allocations: 1.25 kB / 0.8035 GB, free: 13.7 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.894e-05/0.605, allocations: 37.88 kB / 0.8035 GB, free: 13.68 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.316e-05/0.6051, allocations: 25.16 kB / 0.8036 GB, free: 13.68 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002073/0.6071, allocations: 0.8873 MB / 0.8044 GB, free: 13.37 MB / 0.5762 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 0.007944/0.6151, allocations: 4.943 MB / 0.8093 GB, free: 9.914 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001503/0.6166, allocations: 0.6152 MB / 0.8099 GB, free: 9.695 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007582/0.6174, allocations: 355.3 kB / 0.8102 GB, free: 9.574 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.000788/0.6182, allocations: 0.8248 MB / 0.811 GB, free: 8.625 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.917e-05/0.6182, allocations: 38.72 kB / 0.811 GB, free: 8.578 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=61): time 2.375e-06/0.6183, allocations: 0 / 0.811 GB, free: 8.578 MB / 0.5762 GB Notification: Performance of matching and sorting (n=61): time 0.00765/0.6259, allocations: 1.687 MB / 0.8127 GB, free: 8.07 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.684e-05/0.626, allocations: 57.72 kB / 0.8127 GB, free: 8.008 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001927/0.6279, allocations: 1.225 MB / 0.8139 GB, free: 7.504 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 0.0001873/0.6281, allocations: 44.02 kB / 0.814 GB, free: 7.461 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005971/0.6287, allocations: 0.6039 MB / 0.8146 GB, free: 6.98 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002602/0.629, allocations: 213 kB / 0.8148 GB, free: 6.812 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002472/0.6292, allocations: 158.1 kB / 0.8149 GB, free: 6.734 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 0.0001618/0.6294, allocations: 333.5 kB / 0.8152 GB, free: 6.418 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006835/0.6301, allocations: 290.2 kB / 0.8155 GB, free: 6.316 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008832/0.631, allocations: 498.9 kB / 0.816 GB, free: 5.992 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00148/0.6325, allocations: 0.7139 MB / 0.8167 GB, free: 5.609 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.019e-06/0.6325, allocations: 5 kB / 0.8167 GB, free: 5.605 MB / 0.5762 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.005025/0.6375, allocations: 1.267 MB / 0.8179 GB, free: 5.207 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 2.19e-05/0.6376, allocations: 6.594 kB / 0.8179 GB, free: 5.207 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.244e-05/0.6376, allocations: 5.078 kB / 0.8179 GB, free: 5.207 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006191/0.6382, allocations: 139.7 kB / 0.8181 GB, free: 5.145 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006524/0.6389, allocations: 161.6 kB / 0.8182 GB, free: 5.102 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0009193/0.6398, allocations: 0.6902 MB / 0.8189 GB, free: 4.488 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001306/0.6411, allocations: 117.7 kB / 0.819 GB, free: 4.414 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.032e-05/0.6412, allocations: 35.58 kB / 0.8191 GB, free: 4.402 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001208/0.6425, allocations: 0.5544 MB / 0.8196 GB, free: 4.059 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0009151/0.6434, allocations: 498.5 kB / 0.8201 GB, free: 3.676 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001458/0.6448, allocations: 0.7065 MB / 0.8208 GB, free: 3.223 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.857e-06/0.6449, allocations: 1 kB / 0.8208 GB, free: 3.223 MB / 0.5762 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.005088/0.65, allocations: 1.266 MB / 0.822 GB, free: 2.586 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 1.61e-05/0.65, allocations: 6.969 kB / 0.822 GB, free: 2.586 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.342e-06/0.65, allocations: 3.375 kB / 0.822 GB, free: 2.586 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005254/0.6505, allocations: 133.2 kB / 0.8221 GB, free: 2.523 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006102/0.6512, allocations: 161.7 kB / 0.8223 GB, free: 2.48 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0008954/0.6521, allocations: 0.6998 MB / 0.823 GB, free: 1.859 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001282/0.6534, allocations: 96.56 kB / 0.8231 GB, free: 1.805 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.604e-05/0.6535, allocations: 34.36 kB / 0.8231 GB, free: 1.793 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * 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 (79): * Single equations (assignments): 78 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,9)} Notification: Performance of prepare postOptimizeDAE: time 0.0002989/0.6538, allocations: 226.6 kB / 0.8233 GB, free: 1.578 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003255/0.6541, allocations: 135.4 kB / 0.8234 GB, free: 1.508 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004847/0.6589, allocations: 1.264 MB / 0.8247 GB, free: 0.8086 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.154e-05/0.659, allocations: 18.66 kB / 0.8247 GB, free: 0.7969 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.224e-06/0.659, allocations: 1.5 kB / 0.8247 GB, free: 0.7969 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.004368/0.6634, allocations: 1.1 MB / 0.8258 GB, free: 176 kB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.007436/0.6708, allocations: 2.61 MB / 0.8283 GB, free: 14.37 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.348e-06/0.6709, allocations: 6.906 kB / 0.8283 GB, free: 14.37 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004965/0.6714, allocations: 111.2 kB / 0.8284 GB, free: 14.34 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005082/0.6719, allocations: 138.8 kB / 0.8286 GB, free: 14.27 MB / 0.5919 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.138e-05/0.672, allocations: 20.31 kB / 0.8286 GB, free: 14.26 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005214/0.6772, allocations: 2.585 MB / 0.8311 GB, free: 12.06 MB / 0.5919 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.657e-06/0.6772, allocations: 2.375 kB / 0.8311 GB, free: 12.06 MB / 0.5919 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005732/0.683, allocations: 1.707 MB / 0.8328 GB, free: 10.98 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008411/0.6838, allocations: 307.2 kB / 0.8331 GB, free: 10.66 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002259/0.6841, allocations: 19.98 kB / 0.8331 GB, free: 10.64 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008331/0.6849, allocations: 51.94 kB / 0.8331 GB, free: 10.59 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001437/0.6851, allocations: 60.38 kB / 0.8332 GB, free: 10.54 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.862e-05/0.6851, allocations: 31.97 kB / 0.8332 GB, free: 10.5 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.001377/0.6865, allocations: 0.8777 MB / 0.8341 GB, free: 9.625 MB / 0.5919 GB Notification: Performance of sort global known variables: time 2.4e-07/0.6865, allocations: 3.938 kB / 0.8341 GB, free: 9.621 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.002107/0.6886, allocations: 0.7174 MB / 0.8348 GB, free: 8.902 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 2 (chi.con.vol.dynBal.U,chi.eva.vol.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 (56): * Single equations (assignments): 51 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 0 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,9)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0009825/0.6896, allocations: 461.5 kB / 0.8352 GB, free: 8.453 MB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.002947/0.6926, allocations: 1.16 MB / 0.8364 GB, free: 7.301 MB / 0.5919 GB Notification: Performance of simCode: created event and clocks part: time 5.41e-06/0.6926, allocations: 0 / 0.8364 GB, free: 7.301 MB / 0.5919 GB Notification: Performance of simCode: created simulation system equations: time 0.001589/0.6942, allocations: 0.5686 MB / 0.8369 GB, free: 6.719 MB / 0.5919 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004042/0.6983, allocations: 0.7927 MB / 0.8377 GB, free: 5.949 MB / 0.5919 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003991/0.7023, allocations: 2.336 MB / 0.84 GB, free: 3.531 MB / 0.5919 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008211/0.7031, allocations: 1.16 MB / 0.8411 GB, free: 2.344 MB / 0.5919 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003163/0.7034, allocations: 119.4 kB / 0.8412 GB, free: 2.227 MB / 0.5919 GB Notification: Performance of SimCode: time 6.91e-07/0.7034, allocations: 0 / 0.8412 GB, free: 2.227 MB / 0.5919 GB Notification: Performance of Templates: time 0.04335/0.7468, allocations: 31.13 MB / 0.8716 GB, free: 3.301 MB / 0.6231 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y.sim & ./BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.Chillers.Examples.Carnot_y.pipe 2>&1)