Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_Buildings.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/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 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(Buildings.Fluid.Chillers.Examples.Carnot_y,fileNamePrefix="Buildings_8_Buildings_Fluid_Chillers_Examples_Carnot_y",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Chillers.Examples.Carnot_y,fileNamePrefix="Buildings_8_Buildings_Fluid_Chillers_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 0.001358/0.001358, allocations: 105.4 kB / 15.7 MB, free: 24 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001118/0.001119, allocations: 195.6 kB / 16.64 MB, free: 6.453 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.375/1.375, allocations: 205.1 MB / 222.5 MB, free: 4.578 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.679/1.679, allocations: 292.3 MB / 0.549 GB, free: 12.75 MB / 462.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.002622/0.002622, allocations: 72.44 kB / 0.6718 GB, free: 26.27 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2745/0.2772, allocations: 114.5 MB / 0.7836 GB, free: 13.27 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Chillers.Examples.Carnot_y): time 0.1092/0.3865, allocations: 75.18 MB / 0.857 GB, free: 1.816 MB / 0.67 GB Notification: Performance of NFInst.instExpressions: time 0.02225/0.4088, allocations: 12.63 MB / 0.8694 GB, free: 5.156 MB / 0.6856 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003377/0.4123, allocations: 63.62 kB / 0.8694 GB, free: 5.094 MB / 0.6856 GB Notification: Performance of NFTyping.typeComponents: time 0.002988/0.4153, allocations: 0.8345 MB / 0.8703 GB, free: 4.254 MB / 0.6856 GB Notification: Performance of NFTyping.typeBindings: time 0.008288/0.4237, allocations: 2.442 MB / 0.8726 GB, free: 1.801 MB / 0.6856 GB Notification: Performance of NFTyping.typeClassSections: time 0.004752/0.4284, allocations: 1.403 MB / 0.874 GB, free: 420 kB / 0.6856 GB Notification: Performance of NFFlatten.flatten: time 0.007759/0.4362, allocations: 4.342 MB / 0.8783 GB, free: 12.05 MB / 0.7012 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002598/0.4388, allocations: 1.437 MB / 0.8797 GB, free: 10.58 MB / 0.7012 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00494/0.4438, allocations: 1.62 MB / 0.8812 GB, free: 8.961 MB / 0.7012 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002833/0.4467, allocations: 1.202 MB / 0.8824 GB, free: 7.754 MB / 0.7012 GB Notification: Performance of NFPackage.collectConstants: time 0.0004303/0.4471, allocations: 163.9 kB / 0.8826 GB, free: 7.594 MB / 0.7012 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003904/0.451, allocations: 1.408 MB / 0.8839 GB, free: 6.184 MB / 0.7012 GB Notification: Performance of NFScalarize.scalarize: time 0.0006218/0.4517, allocations: 394.6 kB / 0.8843 GB, free: 5.797 MB / 0.7012 GB Notification: Performance of NFVerifyModel.verify: time 0.001523/0.4532, allocations: 0.9061 MB / 0.8852 GB, free: 4.887 MB / 0.7012 GB Notification: Performance of NFConvertDAE.convert: time 0.005517/0.4587, allocations: 2.867 MB / 0.888 GB, free: 2.012 MB / 0.7012 GB Notification: Performance of FrontEnd - DAE generated: time 7.003e-06/0.4588, allocations: 4 kB / 0.888 GB, free: 2.008 MB / 0.7012 GB Notification: Performance of FrontEnd: time 2.434e-06/0.4588, allocations: 0 / 0.888 GB, free: 2.008 MB / 0.7012 GB Notification: Performance of Transformations before backend: time 6.637e-05/0.4589, allocations: 0 / 0.888 GB, free: 2.008 MB / 0.7012 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 0.004976/0.4639, allocations: 2.087 MB / 0.89 GB, free: 15.86 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 5.12e-05/0.4639, allocations: 12.03 kB / 0.8901 GB, free: 15.84 MB / 0.7169 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002108/0.4642, allocations: 144.1 kB / 0.8902 GB, free: 15.7 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0009555/0.4651, allocations: 230.8 kB / 0.8904 GB, free: 15.47 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003044/0.4682, allocations: 1.504 MB / 0.8919 GB, free: 13.91 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001181/0.4683, allocations: 74 kB / 0.892 GB, free: 13.84 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001819/0.4685, allocations: 108 kB / 0.8921 GB, free: 13.73 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002236/0.4708, allocations: 1.096 MB / 0.8931 GB, free: 12.6 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.635e-05/0.4708, allocations: 3.906 kB / 0.8931 GB, free: 12.59 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.768e-05/0.4709, allocations: 40 kB / 0.8932 GB, free: 12.55 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.07e-05/0.471, allocations: 27.98 kB / 0.8932 GB, free: 12.53 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00208/0.4731, allocations: 0.89 MB / 0.8941 GB, free: 11.64 MB / 0.7169 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 0.007954/0.481, allocations: 4.911 MB / 0.8989 GB, free: 6.441 MB / 0.7169 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001699/0.4828, allocations: 0.6196 MB / 0.8995 GB, free: 5.816 MB / 0.7169 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008191/0.4836, allocations: 356.7 kB / 0.8998 GB, free: 5.469 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0009088/0.4845, allocations: 0.8316 MB / 0.9006 GB, free: 4.453 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.534e-05/0.4846, allocations: 39.12 kB / 0.9007 GB, free: 4.406 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=61): time 3.968e-06/0.4846, allocations: 0 / 0.9007 GB, free: 4.406 MB / 0.7169 GB Notification: Performance of matching and sorting (n=61): time 0.008411/0.493, allocations: 1.674 MB / 0.9023 GB, free: 2.703 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.713e-05/0.4932, allocations: 59.97 kB / 0.9023 GB, free: 2.633 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002617/0.4958, allocations: 1.225 MB / 0.9035 GB, free: 1.391 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.0002031/0.496, allocations: 41.7 kB / 0.9036 GB, free: 1.344 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007235/0.4968, allocations: 0.6024 MB / 0.9042 GB, free: 0.7344 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003573/0.4971, allocations: 212.9 kB / 0.9044 GB, free: 0.5234 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000394/0.4975, allocations: 150.6 kB / 0.9045 GB, free: 380 kB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0001672/0.4977, allocations: 337.9 kB / 0.9048 GB, free: 36 kB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008735/0.4986, allocations: 292.7 kB / 0.9051 GB, free: 15.75 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00109/0.4997, allocations: 492.5 kB / 0.9056 GB, free: 15.19 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001837/0.5016, allocations: 0.7129 MB / 0.9063 GB, free: 14.43 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.294e-05/0.5016, allocations: 0 / 0.9063 GB, free: 14.43 MB / 0.7325 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.005404/0.507, allocations: 1.273 MB / 0.9075 GB, free: 13.14 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 3.334e-05/0.5071, allocations: 7.984 kB / 0.9075 GB, free: 13.13 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.423e-05/0.5071, allocations: 4 kB / 0.9075 GB, free: 13.13 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0007229/0.5078, allocations: 141 kB / 0.9077 GB, free: 12.99 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000769/0.5086, allocations: 159.8 kB / 0.9078 GB, free: 12.83 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001081/0.5097, allocations: 0.7006 MB / 0.9085 GB, free: 12.11 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001524/0.5113, allocations: 115 kB / 0.9086 GB, free: 11.99 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001696/0.5115, allocations: 31.98 kB / 0.9087 GB, free: 11.96 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001512/0.513, allocations: 0.5644 MB / 0.9092 GB, free: 11.39 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001005/0.514, allocations: 483.9 kB / 0.9097 GB, free: 10.84 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001691/0.5157, allocations: 0.709 MB / 0.9104 GB, free: 10.08 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.992e-06/0.5158, allocations: 0 / 0.9104 GB, free: 10.08 MB / 0.7325 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.005629/0.5214, allocations: 1.269 MB / 0.9116 GB, free: 8.801 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 2.622e-05/0.5215, allocations: 8 kB / 0.9116 GB, free: 8.793 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.252e-05/0.5215, allocations: 4 kB / 0.9116 GB, free: 8.789 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006309/0.5222, allocations: 137 kB / 0.9117 GB, free: 8.652 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000758/0.5229, allocations: 159.8 kB / 0.9119 GB, free: 8.496 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001074/0.524, allocations: 0.6927 MB / 0.9126 GB, free: 7.777 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001581/0.5257, allocations: 107.5 kB / 0.9127 GB, free: 7.672 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001779/0.5259, allocations: 32 kB / 0.9127 GB, free: 7.641 MB / 0.7325 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 0.0004377/0.5263, allocations: 223.4 kB / 0.9129 GB, free: 7.418 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000653/0.527, allocations: 146.3 kB / 0.9131 GB, free: 7.273 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005712/0.5327, allocations: 1.263 MB / 0.9143 GB, free: 5.992 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.178e-05/0.5328, allocations: 12 kB / 0.9143 GB, free: 5.98 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.705e-05/0.5328, allocations: 0 / 0.9143 GB, free: 5.98 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.004997/0.5378, allocations: 1.099 MB / 0.9154 GB, free: 4.848 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.009174/0.5471, allocations: 2.606 MB / 0.9179 GB, free: 2.129 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.26e-05/0.5471, allocations: 8.031 kB / 0.9179 GB, free: 2.121 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006273/0.5478, allocations: 119.8 kB / 0.918 GB, free: 2.004 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0006096/0.5484, allocations: 128.7 kB / 0.9182 GB, free: 1.875 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001046/0.5485, allocations: 19.98 kB / 0.9182 GB, free: 1.855 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.5084/1.057, allocations: 2.574 MB / 0.9207 GB, free: 134.6 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.237e-05/1.057, allocations: 7.812 kB / 0.9207 GB, free: 134.6 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006854/1.064, allocations: 1.699 MB / 0.9224 GB, free: 134.3 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001121/1.065, allocations: 303 kB / 0.9226 GB, free: 134.3 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003155/1.065, allocations: 19.45 kB / 0.9227 GB, free: 134.3 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001001/1.066, allocations: 55.77 kB / 0.9227 GB, free: 134.3 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002172/1.067, allocations: 64.73 kB / 0.9228 GB, free: 134.2 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001/1.067, allocations: 30.86 kB / 0.9228 GB, free: 134.2 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.001929/1.069, allocations: 0.8794 MB / 0.9237 GB, free: 134.1 MB / 0.7325 GB Notification: Performance of sort global known variables: time 3.1e-07/1.069, allocations: 4.969 kB / 0.9237 GB, free: 134.1 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.003215/1.072, allocations: 0.7169 MB / 0.9244 GB, free: 134.1 MB / 0.7325 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 0.006991/1.079, allocations: 2.569 MB / 0.9269 GB, free: 133 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.002702/1.082, allocations: 1.121 MB / 0.928 GB, free: 132.7 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 9.698e-06/1.082, allocations: 0 / 0.928 GB, free: 132.7 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.001523/1.083, allocations: 0.5646 MB / 0.9285 GB, free: 132.5 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004292/1.088, allocations: 0.8138 MB / 0.9293 GB, free: 132.3 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02729/1.115, allocations: 9.78 MB / 0.9389 GB, free: 127.8 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001393/1.116, allocations: 1.169 MB / 0.94 GB, free: 127.1 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.002045/1.118, allocations: 302.1 kB / 0.9403 GB, free: 127 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000932/1.119, allocations: 0.5025 MB / 0.9408 GB, free: 126.6 MB / 0.7325 GB Notification: Performance of SimCode: time 1.663e-06/1.119, allocations: 0 / 0.9408 GB, free: 126.6 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.09047/1.21, allocations: 42.4 MB / 0.9822 GB, free: 97.84 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate platform static: time 14.01/15.22, allocations: 12.06 kB / 0.9822 GB, free: 97.82 MB / 0.7325 GB (rm -f Buildings_8_Buildings.Fluid.Chillers.Examples.Carnot_y.pipe ; mkfifo Buildings_8_Buildings.Fluid.Chillers.Examples.Carnot_y.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.Chillers.Examples.Carnot_y.pipe >> ../files/Buildings_8_Buildings.Fluid.Chillers.Examples.Carnot_y.sim & python3 -m fmpy simulate --output-file Buildings_8_Buildings.Fluid.Chillers.Examples.Carnot_y_res.csv --start-time 0 --stop-time 3600 --timeout 50 --relative-tolerance 1e-06 Buildings_8_Buildings_Fluid_Chillers_Examples_Carnot_y.fmu > Buildings_8_Buildings.Fluid.Chillers.Examples.Carnot_y.pipe 2>&1)