Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL.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 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.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: translateModel(Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL") translateModel(Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.008672/0.008672, allocations: 101.7 kB / 15.73 MB, free: 5.586 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00158/0.00158, allocations: 192.2 kB / 16.67 MB, free: 5.523 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.624/1.624, allocations: 205.1 MB / 222.5 MB, free: 12.23 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.516/1.516, allocations: 251.7 MB / 0.5094 GB, free: 416 kB / 430.1 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 0.002722/0.002722, allocations: 67.91 kB / 0.7258 GB, free: 4.668 MB / 0.5606 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.6996/0.7024, allocations: 104.7 MB / 0.8281 GB, free: 2.637 MB / 0.6231 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL): time 0.07353/0.7759, allocations: 75.19 MB / 0.9015 GB, free: 7.176 MB / 0.7012 GB Notification: Performance of NFInst.instExpressions: time 0.01874/0.7947, allocations: 12.6 MB / 0.9138 GB, free: 10.54 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002771/0.7975, allocations: 63.62 kB / 0.9138 GB, free: 10.48 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.002384/0.7999, allocations: 0.8228 MB / 0.9146 GB, free: 9.648 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.007661/0.8076, allocations: 2.447 MB / 0.917 GB, free: 7.191 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.004011/0.8117, allocations: 1.366 MB / 0.9184 GB, free: 5.836 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.006775/0.8185, allocations: 4.337 MB / 0.9226 GB, free: 1.492 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00262/0.8211, allocations: 1.437 MB / 0.924 GB, free: 20 kB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004403/0.8255, allocations: 1.611 MB / 0.9256 GB, free: 14.41 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00247/0.828, allocations: 1.198 MB / 0.9268 GB, free: 13.21 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0003369/0.8284, allocations: 168 kB / 0.9269 GB, free: 13.04 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004132/0.8325, allocations: 1.419 MB / 0.9283 GB, free: 11.62 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.000512/0.833, allocations: 394.6 kB / 0.9287 GB, free: 11.23 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.001339/0.8344, allocations: 0.9021 MB / 0.9296 GB, free: 10.33 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.005117/0.8395, allocations: 2.873 MB / 0.9324 GB, free: 7.449 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 6.392e-06/0.8395, allocations: 0 / 0.9324 GB, free: 7.449 MB / 0.7325 GB Notification: Performance of FrontEnd: time 1.923e-06/0.8396, allocations: 0 / 0.9324 GB, free: 7.449 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 2.83e-05/0.8396, allocations: 0 / 0.9324 GB, free: 7.449 MB / 0.7325 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 0.004332/0.8439, allocations: 2.083 MB / 0.9344 GB, free: 5.301 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 4.719e-05/0.844, allocations: 12.03 kB / 0.9344 GB, free: 5.289 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000853/0.8448, allocations: 222.9 kB / 0.9346 GB, free: 5.07 MB / 0.7325 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002878/0.8477, allocations: 1.501 MB / 0.9361 GB, free: 3.512 MB / 0.7325 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.752e-05/0.8478, allocations: 78 kB / 0.9362 GB, free: 3.438 MB / 0.7325 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001795/0.848, allocations: 104 kB / 0.9363 GB, free: 3.336 MB / 0.7325 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002108/0.8501, allocations: 1.1 MB / 0.9373 GB, free: 2.199 MB / 0.7325 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.878e-05/0.8502, allocations: 0 / 0.9373 GB, free: 2.199 MB / 0.7325 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.369e-05/0.8503, allocations: 44 kB / 0.9374 GB, free: 2.156 MB / 0.7325 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.547e-05/0.8503, allocations: 24 kB / 0.9374 GB, free: 2.133 MB / 0.7325 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001925/0.8522, allocations: 0.89 MB / 0.9383 GB, free: 1.242 MB / 0.7325 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 0.008594/0.8608, allocations: 4.899 MB / 0.9431 GB, free: 12.05 MB / 0.7481 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002153/0.863, allocations: 0.6272 MB / 0.9437 GB, free: 11.42 MB / 0.7481 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001117/0.8642, allocations: 356 kB / 0.944 GB, free: 11.07 MB / 0.7481 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0009694/0.8652, allocations: 0.8316 MB / 0.9448 GB, free: 10.05 MB / 0.7481 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.767e-05/0.8652, allocations: 39.12 kB / 0.9449 GB, free: 10 MB / 0.7481 GB Notification: Performance of pre-optimization done (n=62): time 4.448e-06/0.8653, allocations: 0 / 0.9449 GB, free: 10 MB / 0.7481 GB Notification: Performance of matching and sorting (n=62): time 0.01095/0.8762, allocations: 1.697 MB / 0.9465 GB, free: 8.281 MB / 0.7481 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.72e-05/0.8763, allocations: 55.97 kB / 0.9466 GB, free: 8.215 MB / 0.7481 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002694/0.879, allocations: 1.221 MB / 0.9478 GB, free: 6.977 MB / 0.7481 GB Notification: Performance of collectPreVariables (initialization): time 0.0002041/0.8793, allocations: 41.7 kB / 0.9478 GB, free: 6.93 MB / 0.7481 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006942/0.88, allocations: 0.5949 MB / 0.9484 GB, free: 6.328 MB / 0.7481 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003286/0.8803, allocations: 220.8 kB / 0.9486 GB, free: 6.109 MB / 0.7481 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003505/0.8807, allocations: 154.6 kB / 0.9487 GB, free: 5.949 MB / 0.7481 GB Notification: Performance of setup shared object (initialization): time 0.0001704/0.8809, allocations: 337.9 kB / 0.9491 GB, free: 5.613 MB / 0.7481 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001036/0.8819, allocations: 288.7 kB / 0.9493 GB, free: 5.328 MB / 0.7481 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001257/0.8832, allocations: 498.5 kB / 0.9498 GB, free: 4.773 MB / 0.7481 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002021/0.8852, allocations: 0.7121 MB / 0.9505 GB, free: 4.016 MB / 0.7481 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.353e-06/0.8852, allocations: 0 / 0.9505 GB, free: 4.016 MB / 0.7481 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.006987/0.8922, allocations: 1.281 MB / 0.9518 GB, free: 2.723 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 3.594e-05/0.8923, allocations: 11.98 kB / 0.9518 GB, free: 2.711 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.784e-05/0.8923, allocations: 4 kB / 0.9518 GB, free: 2.707 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001055/0.8934, allocations: 156.8 kB / 0.9519 GB, free: 2.551 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009539/0.8944, allocations: 159.7 kB / 0.9521 GB, free: 2.395 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00127/0.8956, allocations: 0.7123 MB / 0.9528 GB, free: 1.656 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00194/0.8976, allocations: 130.9 kB / 0.9529 GB, free: 1.527 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001174/0.8977, allocations: 35.92 kB / 0.9529 GB, free: 1.492 MB / 0.7481 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001779/0.8995, allocations: 0.5565 MB / 0.9535 GB, free: 0.9336 MB / 0.7481 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001203/0.9007, allocations: 483 kB / 0.9539 GB, free: 400 kB / 0.7481 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002032/0.9028, allocations: 0.7043 MB / 0.9546 GB, free: 15.64 MB / 0.7637 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.639e-06/0.9028, allocations: 0 / 0.9546 GB, free: 15.64 MB / 0.7637 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.006851/0.9097, allocations: 1.273 MB / 0.9559 GB, free: 14.36 MB / 0.7637 GB Notification: Performance of prepare postOptimizeDAE: time 2.547e-05/0.9097, allocations: 8 kB / 0.9559 GB, free: 14.35 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.899e-06/0.9097, allocations: 4 kB / 0.9559 GB, free: 14.34 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009187/0.9107, allocations: 160.7 kB / 0.956 GB, free: 14.18 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009513/0.9116, allocations: 147.8 kB / 0.9562 GB, free: 14.04 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001209/0.9129, allocations: 0.7201 MB / 0.9569 GB, free: 13.29 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001874/0.9148, allocations: 103.5 kB / 0.957 GB, free: 13.19 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001093/0.9149, allocations: 35.98 kB / 0.957 GB, free: 13.16 MB / 0.7637 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 15 * 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 (77): * Single equations (assignments): 76 * 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 {(1,11)} Notification: Performance of prepare postOptimizeDAE: time 0.0003929/0.9153, allocations: 224.1 kB / 0.9572 GB, free: 12.93 MB / 0.7637 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000423/0.9157, allocations: 138.3 kB / 0.9574 GB, free: 12.79 MB / 0.7637 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006668/0.9224, allocations: 1.283 MB / 0.9586 GB, free: 11.5 MB / 0.7637 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.73e-05/0.9225, allocations: 4 kB / 0.9586 GB, free: 11.49 MB / 0.7637 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.768e-06/0.9225, allocations: 3.938 kB / 0.9586 GB, free: 11.49 MB / 0.7637 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.005428/0.9279, allocations: 1.111 MB / 0.9597 GB, free: 10.35 MB / 0.7637 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.009765/0.9377, allocations: 2.613 MB / 0.9623 GB, free: 7.617 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.398e-05/0.9378, allocations: 4.438 kB / 0.9623 GB, free: 7.613 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006537/0.9384, allocations: 111.9 kB / 0.9624 GB, free: 7.504 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0006439/0.9391, allocations: 156.9 kB / 0.9625 GB, free: 7.348 MB / 0.7637 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.831e-05/0.9392, allocations: 23.94 kB / 0.9625 GB, free: 7.324 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0008594/0.94, allocations: 0.7084 MB / 0.9632 GB, free: 6.59 MB / 0.7637 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.933e-06/0.94, allocations: 11.88 kB / 0.9632 GB, free: 6.578 MB / 0.7637 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005617/0.9457, allocations: 1.699 MB / 0.9649 GB, free: 4.805 MB / 0.7637 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008773/0.9466, allocations: 307.2 kB / 0.9652 GB, free: 4.484 MB / 0.7637 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001905/0.9468, allocations: 16 kB / 0.9652 GB, free: 4.469 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007914/0.9476, allocations: 59.98 kB / 0.9653 GB, free: 4.41 MB / 0.7637 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001334/0.9477, allocations: 52.31 kB / 0.9653 GB, free: 4.355 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.454e-05/0.9478, allocations: 27.98 kB / 0.9653 GB, free: 4.328 MB / 0.7637 GB Notification: Performance of sorting global known variables: time 0.001307/0.9491, allocations: 0.8814 MB / 0.9662 GB, free: 3.445 MB / 0.7637 GB Notification: Performance of sort global known variables: time 2.7e-07/0.9491, allocations: 0 / 0.9662 GB, free: 3.445 MB / 0.7637 GB Notification: Performance of remove unused functions: time 0.002003/0.9511, allocations: 0.7135 MB / 0.9669 GB, free: 2.73 MB / 0.7637 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 (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 {(1,11)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0009959/0.9521, allocations: 463 kB / 0.9673 GB, free: 2.277 MB / 0.7637 GB Notification: Performance of simCode: created initialization part: time 0.00274/0.9549, allocations: 1.121 MB / 0.9684 GB, free: 1.164 MB / 0.7637 GB Notification: Performance of simCode: created event and clocks part: time 6.582e-06/0.9549, allocations: 0 / 0.9684 GB, free: 1.164 MB / 0.7637 GB Notification: Performance of simCode: created simulation system equations: time 0.0009123/0.9558, allocations: 395.3 kB / 0.9688 GB, free: 0.7812 MB / 0.7637 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003741/0.9596, allocations: 0.8132 MB / 0.9696 GB, free: 15.98 MB / 0.7794 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0039/0.9635, allocations: 2.26 MB / 0.9718 GB, free: 13.64 MB / 0.7794 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000724/0.9642, allocations: 1.164 MB / 0.9729 GB, free: 12.45 MB / 0.7794 GB Notification: Performance of simCode: alias equations: time 0.001275/0.9655, allocations: 306.9 kB / 0.9732 GB, free: 12.14 MB / 0.7794 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002534/0.9658, allocations: 107.4 kB / 0.9733 GB, free: 12.04 MB / 0.7794 GB Notification: Performance of SimCode: time 1.323e-06/0.9658, allocations: 0 / 0.9733 GB, free: 12.04 MB / 0.7794 GB Notification: Performance of Templates: time 0.05515/1.021, allocations: 32.31 MB / 1.005 GB, free: 12.14 MB / 0.8106 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL.makefile (rm -f Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL.sim & ./Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Fluid.Chillers.Validation.Carnot_y_etaPL.pipe 2>&1)