Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.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/IDEAS 3.0.0-master/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-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: "" <> buildModelFMU(IDEAS.Fluid.HeatPumps.Examples.Carnot_y,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_HeatPumps_Examples_Carnot_y",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.HeatPumps.Examples.Carnot_y,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_HeatPumps_Examples_Carnot_y",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.007008/0.007008, allocations: 101.2 kB / 15.73 MB, free: 5.996 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001282/0.001282, allocations: 185.6 kB / 16.67 MB, free: 5.93 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.266/1.266, allocations: 222.9 MB / 240.4 MB, free: 4.328 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.8534/0.8534, allocations: 135.1 MB / 425.7 MB, free: 12.04 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001288/0.001288, allocations: 59.91 kB / 0.5851 GB, free: 3.887 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.37/0.3713, allocations: 80.91 MB / 0.6642 GB, free: 7.289 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.HeatPumps.Examples.Carnot_y): time 0.06354/0.4348, allocations: 75.17 MB / 0.7376 GB, free: 6.223 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.01927/0.4541, allocations: 15.14 MB / 0.7524 GB, free: 7.035 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002759/0.457, allocations: 63.62 kB / 0.7524 GB, free: 6.973 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.002072/0.459, allocations: 0.854 MB / 0.7532 GB, free: 6.113 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.006179/0.4653, allocations: 2.718 MB / 0.7559 GB, free: 3.383 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.002986/0.4683, allocations: 1.399 MB / 0.7573 GB, free: 1.996 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.004565/0.4729, allocations: 4.4 MB / 0.7616 GB, free: 13.58 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001637/0.4745, allocations: 1.457 MB / 0.763 GB, free: 12.09 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003131/0.4776, allocations: 1.678 MB / 0.7646 GB, free: 10.42 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001449/0.4791, allocations: 1.225 MB / 0.7658 GB, free: 9.188 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.000202/0.4793, allocations: 160 kB / 0.766 GB, free: 9.031 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00256/0.4819, allocations: 1.408 MB / 0.7674 GB, free: 7.621 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.0003397/0.4822, allocations: 394.6 kB / 0.7677 GB, free: 7.234 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0008478/0.4831, allocations: 0.9099 MB / 0.7686 GB, free: 6.32 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.003745/0.4868, allocations: 2.889 MB / 0.7714 GB, free: 3.426 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 5.19e-06/0.4869, allocations: 0 / 0.7714 GB, free: 3.426 MB / 0.5919 GB Notification: Performance of FrontEnd: time 3.246e-06/0.4869, allocations: 4 kB / 0.7714 GB, free: 3.422 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 2.25e-05/0.4869, allocations: 0 / 0.7714 GB, free: 3.422 MB / 0.5919 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 0.00344/0.4903, allocations: 2.139 MB / 0.7735 GB, free: 1.215 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 3.983e-05/0.4904, allocations: 8.031 kB / 0.7735 GB, free: 1.207 MB / 0.5919 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001527/0.4906, allocations: 152.1 kB / 0.7737 GB, free: 1.051 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007679/0.4913, allocations: 239.5 kB / 0.7739 GB, free: 0.8164 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002314/0.4937, allocations: 1.541 MB / 0.7754 GB, free: 15.22 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.417e-05/0.4937, allocations: 78 kB / 0.7755 GB, free: 15.14 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001403/0.4939, allocations: 100 kB / 0.7756 GB, free: 15.05 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001808/0.4957, allocations: 1.104 MB / 0.7767 GB, free: 13.91 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.514e-05/0.4957, allocations: 0 / 0.7767 GB, free: 13.91 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.522e-05/0.4958, allocations: 40 kB / 0.7767 GB, free: 13.87 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.293e-05/0.4959, allocations: 27.94 kB / 0.7767 GB, free: 13.84 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002092/0.4979, allocations: 0.9016 MB / 0.7776 GB, free: 12.94 MB / 0.6075 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 0.005151/0.5031, allocations: 4.92 MB / 0.7824 GB, free: 7.73 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001378/0.5045, allocations: 0.6197 MB / 0.783 GB, free: 7.105 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006797/0.5052, allocations: 347.6 kB / 0.7834 GB, free: 6.766 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005772/0.5058, allocations: 0.8316 MB / 0.7842 GB, free: 5.746 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.279e-05/0.5058, allocations: 39.12 kB / 0.7842 GB, free: 5.699 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=61): time 1.753e-06/0.5058, allocations: 0 / 0.7842 GB, free: 5.699 MB / 0.6075 GB Notification: Performance of matching and sorting (n=61): time 0.006867/0.5127, allocations: 1.698 MB / 0.7859 GB, free: 3.977 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.397e-05/0.5128, allocations: 59.97 kB / 0.7859 GB, free: 3.906 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001462/0.5142, allocations: 1.234 MB / 0.7871 GB, free: 2.656 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 6.208e-05/0.5143, allocations: 41.7 kB / 0.7872 GB, free: 2.609 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004662/0.5148, allocations: 0.6113 MB / 0.7878 GB, free: 1.992 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001933/0.515, allocations: 234 kB / 0.788 GB, free: 1.762 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000209/0.5152, allocations: 150.6 kB / 0.7881 GB, free: 1.609 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001069/0.5153, allocations: 337.9 kB / 0.7884 GB, free: 1.273 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006296/0.5159, allocations: 288.7 kB / 0.7887 GB, free: 0.9883 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000771/0.5167, allocations: 0.4928 MB / 0.7892 GB, free: 432 kB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001349/0.5181, allocations: 0.7089 MB / 0.7899 GB, free: 15.67 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.037e-06/0.5181, allocations: 0 / 0.7899 GB, free: 15.67 MB / 0.6231 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.00449/0.5226, allocations: 1.281 MB / 0.7911 GB, free: 14.38 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.841e-05/0.5226, allocations: 8 kB / 0.7912 GB, free: 14.37 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.837e-06/0.5226, allocations: 4 kB / 0.7912 GB, free: 14.36 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000557/0.5232, allocations: 145 kB / 0.7913 GB, free: 14.22 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005916/0.5238, allocations: 159.8 kB / 0.7914 GB, free: 14.06 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0007681/0.5246, allocations: 0.7006 MB / 0.7921 GB, free: 13.34 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000912/0.5255, allocations: 119.4 kB / 0.7922 GB, free: 13.22 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.264e-05/0.5256, allocations: 35.98 kB / 0.7923 GB, free: 13.18 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0009759/0.5265, allocations: 0.5565 MB / 0.7928 GB, free: 12.62 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0007745/0.5273, allocations: 0.4893 MB / 0.7933 GB, free: 12.06 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001299/0.5286, allocations: 0.7012 MB / 0.794 GB, free: 11.31 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.067e-06/0.5287, allocations: 4 kB / 0.794 GB, free: 11.31 MB / 0.6231 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.004534/0.5332, allocations: 1.274 MB / 0.7952 GB, free: 10.02 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.485e-05/0.5332, allocations: 11.94 kB / 0.7952 GB, free: 10.01 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.534e-06/0.5332, allocations: 7.984 kB / 0.7953 GB, free: 10 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004688/0.5337, allocations: 137.1 kB / 0.7954 GB, free: 9.867 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000578/0.5343, allocations: 159.8 kB / 0.7955 GB, free: 9.711 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.000746/0.5351, allocations: 0.6928 MB / 0.7962 GB, free: 8.992 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009422/0.536, allocations: 107.6 kB / 0.7963 GB, free: 8.887 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.454e-05/0.5361, allocations: 28 kB / 0.7963 GB, free: 8.859 MB / 0.6231 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 0.0002125/0.5363, allocations: 236 kB / 0.7966 GB, free: 8.621 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002103/0.5365, allocations: 139.1 kB / 0.7967 GB, free: 8.484 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004511/0.541, allocations: 1.271 MB / 0.7979 GB, free: 7.199 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.14e-05/0.541, allocations: 4 kB / 0.7979 GB, free: 7.195 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.763e-06/0.5411, allocations: 4 kB / 0.7979 GB, free: 7.191 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.004022/0.5451, allocations: 1.107 MB / 0.799 GB, free: 6.051 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006344/0.5514, allocations: 2.618 MB / 0.8016 GB, free: 3.32 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.725e-06/0.5515, allocations: 8.062 kB / 0.8016 GB, free: 3.312 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004698/0.5519, allocations: 107.9 kB / 0.8017 GB, free: 3.207 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004689/0.5524, allocations: 132.7 kB / 0.8018 GB, free: 3.074 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.482e-05/0.5525, allocations: 19.98 kB / 0.8018 GB, free: 3.055 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004885/0.5574, allocations: 2.63 MB / 0.8044 GB, free: 280 kB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.248e-06/0.5574, allocations: 4 kB / 0.8044 GB, free: 276 kB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00529/0.5627, allocations: 1.7 MB / 0.8061 GB, free: 14.5 MB / 0.6387 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006568/0.5634, allocations: 323.8 kB / 0.8064 GB, free: 14.16 MB / 0.6387 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002732/0.5637, allocations: 16 kB / 0.8064 GB, free: 14.14 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009237/0.5646, allocations: 55.98 kB / 0.8065 GB, free: 14.09 MB / 0.6387 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001324/0.5647, allocations: 68.23 kB / 0.8065 GB, free: 14.02 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.298e-05/0.5648, allocations: 27.98 kB / 0.8065 GB, free: 14 MB / 0.6387 GB Notification: Performance of sorting global known variables: time 0.001335/0.5661, allocations: 0.8818 MB / 0.8074 GB, free: 13.11 MB / 0.6387 GB Notification: Performance of sort global known variables: time 1.6e-07/0.5661, allocations: 0 / 0.8074 GB, free: 13.11 MB / 0.6387 GB Notification: Performance of remove unused functions: time 0.00201/0.5682, allocations: 0.733 MB / 0.8081 GB, free: 12.38 MB / 0.6387 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 0.006248/0.5744, allocations: 2.597 MB / 0.8107 GB, free: 9.715 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.002668/0.5771, allocations: 1.121 MB / 0.8118 GB, free: 8.598 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 6.301e-06/0.5771, allocations: 0 / 0.8118 GB, free: 8.598 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.001485/0.5786, allocations: 0.5643 MB / 0.8123 GB, free: 8.02 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00373/0.5824, allocations: 0.8024 MB / 0.8131 GB, free: 7.234 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01975/0.6021, allocations: 9.868 MB / 0.8227 GB, free: 13.06 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007419/0.6029, allocations: 1.175 MB / 0.8239 GB, free: 11.86 MB / 0.6544 GB Notification: Performance of simCode: alias equations: time 0.00113/0.604, allocations: 318.9 kB / 0.8242 GB, free: 11.54 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006885/0.6047, allocations: 0.511 MB / 0.8247 GB, free: 11.03 MB / 0.6544 GB Notification: Performance of SimCode: time 6.81e-07/0.6048, allocations: 4 kB / 0.8247 GB, free: 11.02 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.07472/0.6795, allocations: 42.56 MB / 0.8662 GB, free: 0.9141 MB / 0.6856 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.4/14.07, allocations: 18.41 kB / 0.8663 GB, free: 0.8984 MB / 0.6856 GB (rm -f IDEAS_dev_IDEAS.Fluid.HeatPumps.Examples.Carnot_y.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.HeatPumps.Examples.Carnot_y.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.HeatPumps.Examples.Carnot_y.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.HeatPumps.Examples.Carnot_y.sim & python3 -m fmpy simulate --output-file IDEAS_dev_IDEAS.Fluid.HeatPumps.Examples.Carnot_y_res.csv --start-time 0 --stop-time 3600 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 1.44 IDEAS_dev_IDEAS_Fluid_HeatPumps_Examples_Carnot_y.fmu > IDEAS_dev_IDEAS.Fluid.HeatPumps.Examples.Carnot_y.pipe 2>&1)