Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp.conf.json loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 8.1.1-maint.8.1.x/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) Using package ModelicaServices with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Using package Modelica with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package Buildings with version 8.1.1 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 8.1.1-maint.8.1.x/package.mo) Running command: translateModel(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp") translateModel(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp") Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 8.1.1-maint.8.1.x/package.mo): time 1.651/1.651, allocations: 297.4 MB / 312.6 MB, free: 2.941 MB / 234.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001029/0.001029, allocations: 178 kB / 382.3 MB, free: 14.85 MB / 314.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.331/1.331, allocations: 225.7 MB / 0.6617 GB, free: 7.219 MB / 490.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0007833/0.0007834, allocations: 97.5 kB / 0.7789 GB, free: 46.65 MB / 0.5417 GB Notification: Performance of FrontEnd - loaded program: time 0.0003591/0.0003592, allocations: 8 kB / 0.9058 GB, free: 4.941 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.5607/0.561, allocations: 119.2 MB / 1.022 GB, free: 57.11 MB / 0.698 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp): time 0.1497/0.7108, allocations: 150.5 MB / 1.169 GB, free: 12.68 MB / 0.7605 GB Notification: Performance of NFInst.instExpressions: time 0.005554/0.7164, allocations: 4.677 MB / 1.174 GB, free: 8.77 MB / 0.7605 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003843/0.7168, allocations: 13.16 kB / 1.174 GB, free: 8.762 MB / 0.7605 GB Notification: Performance of NFTyping.typeComponents: time 0.0005701/0.7174, allocations: 135.5 kB / 1.174 GB, free: 8.688 MB / 0.7605 GB Notification: Performance of NFTyping.typeBindings: time 0.0014/0.7188, allocations: 0.4949 MB / 1.174 GB, free: 8.43 MB / 0.7605 GB Notification: Performance of NFTyping.typeClassSections: time 0.001469/0.7202, allocations: 387.8 kB / 1.175 GB, free: 8.25 MB / 0.7605 GB Notification: Performance of NFFlatten.flatten: time 0.004631/0.7249, allocations: 3.502 MB / 1.178 GB, free: 7.039 MB / 0.7605 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001738/0.7267, allocations: 0.7572 MB / 1.179 GB, free: 6.746 MB / 0.7605 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00244/0.7291, allocations: 0.9029 MB / 1.18 GB, free: 6.387 MB / 0.7605 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001523/0.7307, allocations: 0.7279 MB / 1.181 GB, free: 6.09 MB / 0.7605 GB Notification: Performance of NFPackage.collectConstants: time 0.0001286/0.7308, allocations: 34.66 kB / 1.181 GB, free: 6.09 MB / 0.7605 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002045/0.7329, allocations: 0.7979 MB / 1.181 GB, free: 5.832 MB / 0.7605 GB Notification: Performance of NFScalarize.scalarize: time 0.0003762/0.7333, allocations: 280 kB / 1.182 GB, free: 5.723 MB / 0.7605 GB Notification: Performance of NFVerifyModel.verify: time 0.0008526/0.7341, allocations: 0.5437 MB / 1.182 GB, free: 5.406 MB / 0.7605 GB Notification: Performance of NFConvertDAE.convert: time 0.001942/0.7361, allocations: 1.392 MB / 1.184 GB, free: 4.98 MB / 0.7605 GB Notification: Performance of FrontEnd - DAE generated: time 7.615e-06/0.7361, allocations: 0 / 1.184 GB, free: 4.98 MB / 0.7605 GB Notification: Performance of FrontEnd: time 4.217e-06/0.7361, allocations: 0 / 1.184 GB, free: 4.98 MB / 0.7605 GB Notification: Performance of Transformations before backend: time 1.921e-05/0.7361, allocations: 5 kB / 1.184 GB, free: 4.977 MB / 0.7605 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 125 * Number of variables: 125 Notification: Performance of Generate backend data structure: time 0.002352/0.7385, allocations: 1.299 MB / 1.185 GB, free: 4.078 MB / 0.7605 GB Notification: Performance of prepare preOptimizeDAE: time 4.14e-05/0.7385, allocations: 9.562 kB / 1.185 GB, free: 4.078 MB / 0.7605 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007307/0.7393, allocations: 190.4 kB / 1.185 GB, free: 4.004 MB / 0.7605 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001483/0.7408, allocations: 0.839 MB / 1.186 GB, free: 3.516 MB / 0.7605 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.201e-05/0.7408, allocations: 42.75 kB / 1.186 GB, free: 3.5 MB / 0.7605 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.342e-05/0.7409, allocations: 58.69 kB / 1.186 GB, free: 3.484 MB / 0.7605 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001302/0.7422, allocations: 0.7913 MB / 1.187 GB, free: 3.066 MB / 0.7605 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.909e-05/0.7423, allocations: 5.031 kB / 1.187 GB, free: 3.062 MB / 0.7605 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.077e-05/0.7423, allocations: 27.05 kB / 1.187 GB, free: 3.043 MB / 0.7605 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.58e-05/0.7424, allocations: 21.31 kB / 1.187 GB, free: 3.035 MB / 0.7605 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009645/0.7433, allocations: 0.5407 MB / 1.187 GB, free: 2.883 MB / 0.7605 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 0.004339/0.7477, allocations: 4.596 MB / 1.192 GB, free: 15 MB / 0.7761 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007599/0.7485, allocations: 429.9 kB / 1.192 GB, free: 14.86 MB / 0.7761 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004018/0.7489, allocations: 253.5 kB / 1.192 GB, free: 14.79 MB / 0.7761 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002878/0.7492, allocations: 196.1 kB / 1.193 GB, free: 14.59 MB / 0.7761 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005611/0.7497, allocations: 308.6 kB / 1.193 GB, free: 14.46 MB / 0.7761 GB Notification: Performance of pre-optimization done (n=31): time 2.334e-06/0.7498, allocations: 5.156 kB / 1.193 GB, free: 14.45 MB / 0.7761 GB Notification: Performance of matching and sorting (n=31): time 0.00534/0.7551, allocations: 1.686 MB / 1.195 GB, free: 13.74 MB / 0.7761 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.345e-05/0.7552, allocations: 82.33 kB / 1.195 GB, free: 13.64 MB / 0.7761 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001638/0.7568, allocations: 1.113 MB / 1.196 GB, free: 12.71 MB / 0.7761 GB Notification: Performance of collectPreVariables (initialization): time 7.667e-05/0.7569, allocations: 37.7 kB / 1.196 GB, free: 12.67 MB / 0.7761 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004557/0.7574, allocations: 497.5 kB / 1.196 GB, free: 12.22 MB / 0.7761 GB Notification: Performance of collectInitialBindings (initialization): time 9.67e-05/0.7575, allocations: 108.4 kB / 1.196 GB, free: 12.12 MB / 0.7761 GB Notification: Performance of simplifyInitialFunctions (initialization): time 2.285e-05/0.7575, allocations: 8 kB / 1.196 GB, free: 12.11 MB / 0.7761 GB Notification: Performance of setup shared object (initialization): time 0.0001136/0.7576, allocations: 327.7 kB / 1.197 GB, free: 11.79 MB / 0.7761 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003984/0.758, allocations: 211.5 kB / 1.197 GB, free: 11.63 MB / 0.7761 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006197/0.7587, allocations: 0.527 MB / 1.197 GB, free: 11.04 MB / 0.7761 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008595/0.7595, allocations: 0.6428 MB / 1.198 GB, free: 10.41 MB / 0.7761 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.379e-06/0.7596, allocations: 4.688 kB / 1.198 GB, free: 10.4 MB / 0.7761 GB Notification: Performance of matching and sorting (n=54) (initialization): time 0.002314/0.7619, allocations: 1.071 MB / 1.199 GB, free: 9.5 MB / 0.7761 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001679/0.7621, allocations: 278.2 kB / 1.199 GB, free: 9.148 MB / 0.7761 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.203e-05/0.7621, allocations: 4.844 kB / 1.199 GB, free: 9.145 MB / 0.7761 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001318/0.7634, allocations: 394.7 kB / 1.2 GB, free: 8.844 MB / 0.7761 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002311/0.7636, allocations: 68.03 kB / 1.2 GB, free: 8.785 MB / 0.7761 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001374/0.765, allocations: 1.094 MB / 1.201 GB, free: 7.801 MB / 0.7761 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009271/0.766, allocations: 109.8 kB / 1.201 GB, free: 7.711 MB / 0.7761 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.763e-05/0.766, allocations: 25.73 kB / 1.201 GB, free: 7.688 MB / 0.7761 GB Notification: Performance of prepare postOptimizeDAE: time 1.304e-05/0.7661, allocations: 4 kB / 1.201 GB, free: 7.684 MB / 0.7761 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001353/0.7674, allocations: 0.7374 MB / 1.202 GB, free: 7.066 MB / 0.7761 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.737e-06/0.7674, allocations: 8 kB / 1.202 GB, free: 7.059 MB / 0.7761 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005969/0.768, allocations: 219.6 kB / 1.202 GB, free: 6.891 MB / 0.7761 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002186/0.7683, allocations: 67.56 kB / 1.202 GB, free: 6.832 MB / 0.7761 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003576/0.7719, allocations: 3.026 MB / 1.205 GB, free: 4.012 MB / 0.7761 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009444/0.7728, allocations: 100.3 kB / 1.205 GB, free: 3.934 MB / 0.7761 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.492e-05/0.7729, allocations: 24 kB / 1.205 GB, free: 3.91 MB / 0.7761 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 5 ($whenCondition1,$PRE.pulse_p.T_start,pulse_p.T_start,$PRE.pulse_p.count,pulse_p.count) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (34): * Single equations (assignments): 32 * Array equations: 0 * Algorithm blocks: 1 * 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 {(9,11)} Notification: Performance of prepare postOptimizeDAE: time 0.0007431/0.7736, allocations: 475.6 kB / 1.205 GB, free: 3.504 MB / 0.7761 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001373/0.7738, allocations: 99.86 kB / 1.206 GB, free: 3.406 MB / 0.7761 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001267/0.775, allocations: 0.7021 MB / 1.206 GB, free: 2.812 MB / 0.7761 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.961e-06/0.7751, allocations: 7.938 kB / 1.206 GB, free: 2.805 MB / 0.7761 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.965e-06/0.7751, allocations: 4.891 kB / 1.206 GB, free: 2.801 MB / 0.7761 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.44e-06/0.7751, allocations: 0.9375 kB / 1.206 GB, free: 2.801 MB / 0.7761 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002628/0.7777, allocations: 1.626 MB / 1.208 GB, free: 1.375 MB / 0.7761 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.298e-06/0.7777, allocations: 0.5625 kB / 1.208 GB, free: 1.375 MB / 0.7761 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001176/0.7779, allocations: 28.48 kB / 1.208 GB, free: 1.352 MB / 0.7761 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005208/0.7784, allocations: 249.8 kB / 1.208 GB, free: 1.152 MB / 0.7761 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.834e-05/0.7784, allocations: 12.66 kB / 1.208 GB, free: 1.141 MB / 0.7761 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001003/0.7794, allocations: 1.032 MB / 1.209 GB, free: 196 kB / 0.7761 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.549e-06/0.7795, allocations: 0.6094 kB / 1.209 GB, free: 196 kB / 0.7761 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001315/0.7808, allocations: 0.8443 MB / 1.21 GB, free: 15.41 MB / 0.7917 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004146/0.7812, allocations: 226.2 kB / 1.21 GB, free: 15.19 MB / 0.7917 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001047/0.7813, allocations: 8.844 kB / 1.21 GB, free: 15.18 MB / 0.7917 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000504/0.7818, allocations: 58.52 kB / 1.21 GB, free: 15.14 MB / 0.7917 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.644e-05/0.7819, allocations: 33.31 kB / 1.21 GB, free: 15.11 MB / 0.7917 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.771e-05/0.782, allocations: 9.406 kB / 1.21 GB, free: 15.11 MB / 0.7917 GB Notification: Performance of sorting global known variables: time 0.001138/0.7831, allocations: 0.7871 MB / 1.211 GB, free: 14.46 MB / 0.7917 GB Notification: Performance of sort global known variables: time 1.4e-07/0.7831, allocations: 0 / 1.211 GB, free: 14.46 MB / 0.7917 GB Notification: Performance of remove unused functions: time 0.001374/0.7845, allocations: 452.8 kB / 1.211 GB, free: 14.02 MB / 0.7917 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,pulse_p.T_start,pulse_p.count) * Number of discrete states: 1 (pulse_p.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (12): * Single equations (assignments): 9 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * 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 {(9,11)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0004675/0.785, allocations: 188.8 kB / 1.212 GB, free: 13.86 MB / 0.7917 GB Notification: Performance of simCode: created initialization part: time 0.002653/0.7876, allocations: 1.221 MB / 1.213 GB, free: 12.8 MB / 0.7917 GB Notification: Performance of simCode: created event and clocks part: time 3.797e-06/0.7877, allocations: 0 / 1.213 GB, free: 12.8 MB / 0.7917 GB Notification: Performance of simCode: created simulation system equations: time 0.000688/0.7884, allocations: 286.8 kB / 1.213 GB, free: 12.57 MB / 0.7917 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00222/0.7906, allocations: 463.8 kB / 1.214 GB, free: 12.16 MB / 0.7917 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002854/0.7935, allocations: 2.101 MB / 1.216 GB, free: 10 MB / 0.7917 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006749/0.7942, allocations: 1.177 MB / 1.217 GB, free: 8.797 MB / 0.7917 GB Notification: Performance of simCode: alias equations: time 0.0008993/0.7951, allocations: 311.6 kB / 1.217 GB, free: 8.488 MB / 0.7917 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001187/0.7952, allocations: 67.42 kB / 1.217 GB, free: 8.422 MB / 0.7917 GB Notification: Performance of SimCode: time 1.042e-06/0.7952, allocations: 0 / 1.217 GB, free: 8.422 MB / 0.7917 GB Notification: Performance of Templates: time 0.03146/0.8267, allocations: 18.47 MB / 1.235 GB, free: 6.188 MB / 0.8073 GB make -j1 -f Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp.makefile (rm -f Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp.pipe ; mkfifo Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp.pipe >> ../files/Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp.sim & ./Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDp.pipe 2>&1)