Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.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/BuildSysPro 3.6.0/package.mo", uses=false) Using package BuildSysPro with version 3.5.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/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(BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y") translateModel(BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001582/0.001582, allocations: 110.5 kB / 16.41 MB, free: 6.496 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001549/0.001549, allocations: 183 kB / 17.34 MB, free: 5.762 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.339/1.339, allocations: 222.9 MB / 241 MB, free: 15.14 MB / 206.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/package.mo): time 0.8589/0.8589, allocations: 143.1 MB / 434.3 MB, free: 11.96 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001879/0.001879, allocations: 67.67 kB / 0.5962 GB, free: 12.3 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1618/0.1636, allocations: 82.04 MB / 0.6763 GB, free: 10.36 MB / 0.5137 GB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y): time 0.3802/0.5438, allocations: 75.3 MB / 0.7498 GB, free: 27.34 MB / 0.5762 GB Notification: Performance of NFInst.instExpressions: time 0.01748/0.5613, allocations: 15.18 MB / 0.7647 GB, free: 27.16 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002707/0.564, allocations: 66.59 kB / 0.7647 GB, free: 27.16 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.002336/0.5663, allocations: 0.8678 MB / 0.7656 GB, free: 27.15 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.007954/0.5743, allocations: 2.727 MB / 0.7682 GB, free: 27.05 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.003866/0.5782, allocations: 1.397 MB / 0.7696 GB, free: 27.02 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.006566/0.5847, allocations: 4.392 MB / 0.7739 GB, free: 26.08 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001993/0.5867, allocations: 1.183 MB / 0.7751 GB, free: 25.47 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003831/0.5906, allocations: 1.686 MB / 0.7767 GB, free: 24.74 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002223/0.5928, allocations: 1.216 MB / 0.7779 GB, free: 24.27 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.0003093/0.5931, allocations: 161.7 kB / 0.778 GB, free: 24.27 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00359/0.5967, allocations: 1.409 MB / 0.7794 GB, free: 23.82 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.0003854/0.5971, allocations: 407.4 kB / 0.7798 GB, free: 23.57 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.001167/0.5982, allocations: 0.907 MB / 0.7807 GB, free: 23.01 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.004592/0.6028, allocations: 3.031 MB / 0.7837 GB, free: 22.02 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 5.53e-06/0.6028, allocations: 3.938 kB / 0.7837 GB, free: 22.02 MB / 0.5762 GB Notification: Performance of FrontEnd: time 2.014e-06/0.6028, allocations: 0 / 0.7837 GB, free: 22.02 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 3.82e-05/0.6029, allocations: 1.062 kB / 0.7837 GB, free: 22.02 MB / 0.5762 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 0.003696/0.6066, allocations: 2.142 MB / 0.7857 GB, free: 20.62 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 3.614e-05/0.6066, allocations: 9.219 kB / 0.7858 GB, free: 20.62 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008521/0.6075, allocations: 236.2 kB / 0.786 GB, free: 20.53 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002229/0.6097, allocations: 1.539 MB / 0.7875 GB, free: 19.64 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.622e-05/0.6097, allocations: 76.62 kB / 0.7876 GB, free: 19.61 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001409/0.6099, allocations: 104.8 kB / 0.7877 GB, free: 19.57 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001823/0.6117, allocations: 1.102 MB / 0.7887 GB, free: 19.09 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.914e-05/0.6117, allocations: 0 / 0.7887 GB, free: 19.09 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.664e-05/0.6118, allocations: 44.41 kB / 0.7888 GB, free: 19.05 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.801e-05/0.6118, allocations: 27.8 kB / 0.7888 GB, free: 19.05 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001777/0.6136, allocations: 0.8881 MB / 0.7897 GB, free: 18.75 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 0.004752/0.6184, allocations: 4.926 MB / 0.7945 GB, free: 14.6 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001237/0.6196, allocations: 0.5864 MB / 0.7951 GB, free: 14.3 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006152/0.6202, allocations: 329.1 kB / 0.7954 GB, free: 14.14 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0004137/0.6206, allocations: 0.8299 MB / 0.7962 GB, free: 13.18 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.193e-05/0.6207, allocations: 41.66 kB / 0.7962 GB, free: 13.13 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=61): time 2.344e-06/0.6207, allocations: 0 / 0.7962 GB, free: 13.13 MB / 0.5762 GB Notification: Performance of matching and sorting (n=61): time 0.006546/0.6272, allocations: 1.699 MB / 0.7979 GB, free: 12.23 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.356e-05/0.6272, allocations: 60.59 kB / 0.7979 GB, free: 12.17 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001358/0.6286, allocations: 1.223 MB / 0.7991 GB, free: 11.49 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 7.372e-05/0.6287, allocations: 43.2 kB / 0.7992 GB, free: 11.45 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003523/0.629, allocations: 0.6102 MB / 0.7998 GB, free: 10.91 MB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001479/0.6292, allocations: 224.4 kB / 0.8 GB, free: 10.72 MB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001978/0.6294, allocations: 157.4 kB / 0.8001 GB, free: 10.62 MB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 4.99e-05/0.6294, allocations: 334 kB / 0.8004 GB, free: 10.3 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005769/0.63, allocations: 285.9 kB / 0.8007 GB, free: 10.16 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006728/0.6307, allocations: 0.4925 MB / 0.8012 GB, free: 9.77 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001184/0.6318, allocations: 0.7097 MB / 0.8019 GB, free: 9.324 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.519e-06/0.6319, allocations: 3.938 kB / 0.8019 GB, free: 9.32 MB / 0.5762 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.004128/0.636, allocations: 1.278 MB / 0.8031 GB, free: 8.688 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 1.669e-05/0.636, allocations: 6.094 kB / 0.8032 GB, free: 8.688 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.305e-06/0.636, allocations: 3.031 kB / 0.8032 GB, free: 8.688 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005227/0.6365, allocations: 142.2 kB / 0.8033 GB, free: 8.617 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005565/0.6371, allocations: 161.1 kB / 0.8034 GB, free: 8.574 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006549/0.6377, allocations: 0.7056 MB / 0.8041 GB, free: 7.953 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001007/0.6387, allocations: 128.2 kB / 0.8043 GB, free: 7.867 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.074e-05/0.6388, allocations: 33.52 kB / 0.8043 GB, free: 7.859 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0008817/0.6397, allocations: 0.5494 MB / 0.8048 GB, free: 7.523 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0006572/0.6403, allocations: 0.497 MB / 0.8053 GB, free: 7.133 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001169/0.6415, allocations: 0.7046 MB / 0.806 GB, free: 6.691 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.304e-06/0.6415, allocations: 0 / 0.806 GB, free: 6.691 MB / 0.5762 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.003937/0.6455, allocations: 1.276 MB / 0.8072 GB, free: 6.051 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 1.19e-05/0.6455, allocations: 4.812 kB / 0.8072 GB, free: 6.051 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.879e-06/0.6455, allocations: 4.594 kB / 0.8073 GB, free: 6.051 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004185/0.6459, allocations: 135.1 kB / 0.8074 GB, free: 5.988 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005077/0.6464, allocations: 155.2 kB / 0.8075 GB, free: 5.949 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005918/0.647, allocations: 0.7084 MB / 0.8082 GB, free: 5.324 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001011/0.648, allocations: 101 kB / 0.8083 GB, free: 5.266 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.651e-05/0.6481, allocations: 30.67 kB / 0.8083 GB, free: 5.258 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 (78): * Single equations (assignments): 77 * 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 {(1,10)} Notification: Performance of prepare postOptimizeDAE: time 0.0002036/0.6483, allocations: 232.2 kB / 0.8086 GB, free: 5.035 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002092/0.6485, allocations: 141.5 kB / 0.8087 GB, free: 4.961 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003991/0.6525, allocations: 1.26 MB / 0.8099 GB, free: 4.262 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.436e-05/0.6525, allocations: 11.97 kB / 0.8099 GB, free: 4.258 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.402e-06/0.6525, allocations: 0 / 0.8099 GB, free: 4.258 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003477/0.656, allocations: 1.099 MB / 0.811 GB, free: 3.34 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005474/0.6614, allocations: 2.62 MB / 0.8136 GB, free: 0.6211 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.234e-06/0.6614, allocations: 4 kB / 0.8136 GB, free: 0.6172 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004052/0.6618, allocations: 112.2 kB / 0.8137 GB, free: 0.5078 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004014/0.6622, allocations: 140.6 kB / 0.8138 GB, free: 376 kB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.027e-05/0.6623, allocations: 23.98 kB / 0.8138 GB, free: 352 kB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00495/0.6672, allocations: 2.619 MB / 0.8164 GB, free: 13.58 MB / 0.5919 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.194e-05/0.6672, allocations: 11.94 kB / 0.8164 GB, free: 13.57 MB / 0.5919 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005511/0.6728, allocations: 1.708 MB / 0.8181 GB, free: 11.79 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007576/0.6735, allocations: 312 kB / 0.8184 GB, free: 11.46 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001913/0.6737, allocations: 16 kB / 0.8184 GB, free: 11.45 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000761/0.6745, allocations: 57.48 kB / 0.8184 GB, free: 11.39 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001368/0.6746, allocations: 56.38 kB / 0.8185 GB, free: 11.34 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.051e-05/0.6747, allocations: 38.97 kB / 0.8185 GB, free: 11.3 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.001301/0.676, allocations: 0.878 MB / 0.8194 GB, free: 10.43 MB / 0.5919 GB Notification: Performance of sort global known variables: time 1.1e-07/0.676, allocations: 3.938 kB / 0.8194 GB, free: 10.42 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.002078/0.6781, allocations: 0.729 MB / 0.8201 GB, free: 9.691 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 2 (heaPum.con.vol.dynBal.U,heaPum.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 (55): * Single equations (assignments): 50 * 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 {(1,10)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0009845/0.679, allocations: 464.1 kB / 0.8206 GB, free: 9.27 MB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.002662/0.6817, allocations: 1.07 MB / 0.8216 GB, free: 8.207 MB / 0.5919 GB Notification: Performance of simCode: created event and clocks part: time 4.168e-06/0.6817, allocations: 0 / 0.8216 GB, free: 8.207 MB / 0.5919 GB Notification: Performance of simCode: created simulation system equations: time 0.001487/0.6832, allocations: 0.5372 MB / 0.8221 GB, free: 7.66 MB / 0.5919 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003539/0.6867, allocations: 0.8146 MB / 0.8229 GB, free: 6.867 MB / 0.5919 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003992/0.6907, allocations: 2.344 MB / 0.8252 GB, free: 4.465 MB / 0.5919 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008382/0.6916, allocations: 1.168 MB / 0.8264 GB, free: 3.27 MB / 0.5919 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003156/0.6919, allocations: 107.4 kB / 0.8265 GB, free: 3.164 MB / 0.5919 GB Notification: Performance of SimCode: time 1.012e-06/0.6919, allocations: 0 / 0.8265 GB, free: 3.164 MB / 0.5919 GB Notification: Performance of Templates: time 0.04415/0.736, allocations: 31.75 MB / 0.8575 GB, free: 3.637 MB / 0.6231 GB make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.makefile (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.sim & ./BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Examples.Carnot_y.pipe 2>&1)