Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck.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/Modelica_DeviceDrivers 2.1.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/package.mo", uses=false) Using package AixLib with version 1.3.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/package.mo) Using package SDF with version 0.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo) Using package Modelica_DeviceDrivers with version 2.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.1.1-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: translateModel(AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck") translateModel(AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001218/0.001218, allocations: 115.2 kB / 16.42 MB, free: 6.508 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001185/0.001185, allocations: 183.9 kB / 17.34 MB, free: 5.758 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.236/1.236, allocations: 222.9 MB / 241 MB, free: 15.19 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.1.1-master/package.mo): time 0.05529/0.05529, allocations: 12.04 MB / 303.2 MB, free: 3.125 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo): time 0.0005385/0.0005386, allocations: 19.97 kB / 356.3 MB, free: 14 MB / 302.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/Obsolete/YearIndependent/FastHVAC/Components/HeatExchangers/RadiatorMultiLayer.mo:265:34-265:6228:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/Obsolete/YearIndependent/FastHVAC/Components/HeatExchangers/RadiatorMultiLayer.mo:265:34-265:6853:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/Obsolete/YearIndependent/FastHVAC/Components/HeatExchangers/RadiatorMultiLayer.mo:265:34-265:8435:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/Obsolete/YearIndependent/FastHVAC/Components/HeatExchangers/RadiatorMultiLayer.mo:265:34-265:9369:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/Obsolete/YearIndependent/FastHVAC/Components/HeatExchangers/RadiatorMultiLayer.mo:265:34-265:11505:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/Obsolete/YearIndependent/FastHVAC/Components/HeatExchangers/RadiatorMultiLayer.mo:265:34-265:12875:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/ThermalZones/HighOrder/Components/Examples/DryAir/DryAir_test.mo:71:18-71:405:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/ThermalZones/HighOrder/Components/DryAir/InfiltrationRate_DIN12831.mo:20:192-20:2066:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/ThermalZones/HighOrder/Components/DryAir/InfiltrationRate_DIN12831.mo:20:192-20:4252:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/DataBase/Weather/SurfaceOrientation/SurfaceOrientationData_N_E_S_W_RoofN_Roof_S.mo:5:35-5:362:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/DataBase/Weather/SurfaceOrientation/SurfaceOrientationData_N_E_S_W_Hor.mo:5:35-5:320:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/DataBase/Weather/SurfaceOrientation/SurfaceOrientationData_NE_SE_SW_NW_Hor.mo:5:35-5:324:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/DataBase/CHP/CHPDataSimple/CHP_XRGI_9kWel.mo:25:34-25:588:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/DataBase/CHP/CHPDataSimple/CHP_XRGI_9kWel.mo:25:34-25:3852:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/DataBase/CHP/CHPDataSimple/CHP_Cleanergy_C9G.mo:36:34-36:594:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/BoundaryConditions/InternalGains/Examples/InternalGains/Machines.mo:31:20-31:400:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/BoundaryConditions/InternalGains/Examples/InternalGains/Lights.mo:27:20-27:398:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2/package.mo): time 1.437/1.437, allocations: 268.2 MB / 0.6617 GB, free: 2.602 MB / 478.1 MB Notification: Performance of FrontEnd - loaded program: time 0.002082/0.002082, allocations: 112.2 kB / 0.888 GB, free: 2.789 MB / 0.6075 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4551/0.4572, allocations: 108.4 MB / 0.9938 GB, free: 1.094 MB / 0.67 GB Notification: Performance of NFInst.instantiate(AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck): time 0.002245/0.4595, allocations: 1.271 MB / 0.9951 GB, free: 15.82 MB / 0.6857 GB Notification: Performance of NFInst.instExpressions: time 0.0009338/0.4604, allocations: 0.6072 MB / 0.9957 GB, free: 15.21 MB / 0.6857 GB Notification: Performance of NFInst.updateImplicitVariability: time 2.187e-05/0.4605, allocations: 0 / 0.9957 GB, free: 15.21 MB / 0.6857 GB Notification: Performance of NFTyping.typeComponents: time 1.737e-05/0.4605, allocations: 7.922 kB / 0.9957 GB, free: 15.2 MB / 0.6857 GB Notification: Performance of NFTyping.typeBindings: time 3.761e-05/0.4606, allocations: 0 / 0.9957 GB, free: 15.2 MB / 0.6857 GB Notification: Performance of NFTyping.typeClassSections: time 0.0005441/0.4611, allocations: 151.4 kB / 0.9958 GB, free: 15.05 MB / 0.6857 GB Notification: Performance of NFFlatten.flatten: time 6.052e-05/0.4612, allocations: 19.92 kB / 0.9958 GB, free: 15.03 MB / 0.6857 GB Notification: Performance of NFFlatten.resolveConnections: time 3.988e-05/0.4612, allocations: 0 / 0.9958 GB, free: 15.03 MB / 0.6857 GB Notification: Performance of NFEvalConstants.evaluate: time 3.644e-05/0.4613, allocations: 7.938 kB / 0.9959 GB, free: 15.02 MB / 0.6857 GB Notification: Performance of NFSimplifyModel.simplify: time 4.931e-05/0.4613, allocations: 11.98 kB / 0.9959 GB, free: 15.01 MB / 0.6857 GB Notification: Performance of NFPackage.collectConstants: time 1.048e-05/0.4613, allocations: 4 kB / 0.9959 GB, free: 15.01 MB / 0.6857 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0004421/0.4618, allocations: 343.3 kB / 0.9962 GB, free: 14.67 MB / 0.6857 GB Notification: Performance of NFScalarize.scalarize: time 1.21e-05/0.4618, allocations: 7.922 kB / 0.9962 GB, free: 14.66 MB / 0.6857 GB Notification: Performance of NFVerifyModel.verify: time 1.92e-05/0.4618, allocations: 4 kB / 0.9962 GB, free: 14.66 MB / 0.6857 GB Notification: Performance of NFConvertDAE.convert: time 0.0002454/0.4621, allocations: 150.3 kB / 0.9964 GB, free: 14.52 MB / 0.6857 GB Notification: Performance of FrontEnd - DAE generated: time 3.376e-06/0.4621, allocations: 4 kB / 0.9964 GB, free: 14.52 MB / 0.6857 GB Notification: Performance of FrontEnd: time 1.343e-06/0.4621, allocations: 0 / 0.9964 GB, free: 14.52 MB / 0.6857 GB Notification: Performance of Transformations before backend: time 4.859e-06/0.4621, allocations: 0 / 0.9964 GB, free: 14.52 MB / 0.6857 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 4 * Number of variables: 4 Notification: Performance of Generate backend data structure: time 0.0003802/0.4625, allocations: 363.1 kB / 0.9967 GB, free: 14.11 MB / 0.6857 GB Notification: Performance of prepare preOptimizeDAE: time 3.536e-05/0.4625, allocations: 19.91 kB / 0.9967 GB, free: 14.09 MB / 0.6857 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 3.191e-05/0.4626, allocations: 0.9375 kB / 0.9967 GB, free: 14.09 MB / 0.6857 GB Notification: Performance of preOpt evaluateParameters (simulation): time 9.873e-05/0.4627, allocations: 168.4 kB / 0.9969 GB, free: 13.89 MB / 0.6857 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.091e-05/0.4627, allocations: 384 / 0.9969 GB, free: 13.89 MB / 0.6857 GB Notification: Performance of preOpt expandDerOperator (simulation): time 1.955e-05/0.4627, allocations: 4.312 kB / 0.9969 GB, free: 13.88 MB / 0.6857 GB Notification: Performance of preOpt clockPartitioning (simulation): time 9.614e-05/0.4628, allocations: 46.25 kB / 0.9969 GB, free: 13.83 MB / 0.6857 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.953e-06/0.4628, allocations: 192 / 0.9969 GB, free: 13.83 MB / 0.6857 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.017e-05/0.4628, allocations: 3.938 kB / 0.9969 GB, free: 13.83 MB / 0.6857 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.507e-06/0.4629, allocations: 0 / 0.9969 GB, free: 13.83 MB / 0.6857 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 3.654e-05/0.4629, allocations: 11.98 kB / 0.9969 GB, free: 13.82 MB / 0.6857 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0001483/0.4631, allocations: 161.7 kB / 0.9971 GB, free: 13.61 MB / 0.6857 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0001634/0.4632, allocations: 42.55 kB / 0.9971 GB, free: 13.56 MB / 0.6857 GB Notification: Performance of preOpt resolveLoops (simulation): time 3.051e-05/0.4633, allocations: 16.86 kB / 0.9972 GB, free: 13.54 MB / 0.6857 GB Notification: Performance of preOpt evalFunc (simulation): time 2.086e-05/0.4633, allocations: 4 kB / 0.9972 GB, free: 13.54 MB / 0.6857 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.529e-05/0.4633, allocations: 38.64 kB / 0.9972 GB, free: 13.49 MB / 0.6857 GB Notification: Performance of pre-optimization done (n=4): time 1.362e-06/0.4633, allocations: 0 / 0.9972 GB, free: 13.49 MB / 0.6857 GB Notification: Performance of matching and sorting (n=6): time 0.000564/0.4639, allocations: 314.2 kB / 0.9975 GB, free: 13.13 MB / 0.6857 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.294e-05/0.4639, allocations: 51.41 kB / 0.9975 GB, free: 13.07 MB / 0.6857 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 6.223e-05/0.464, allocations: 106.2 kB / 0.9976 GB, free: 12.95 MB / 0.6857 GB Notification: Performance of collectPreVariables (initialization): time 1.459e-05/0.464, allocations: 29.7 kB / 0.9977 GB, free: 12.92 MB / 0.6857 GB Notification: Performance of collectInitialEqns (initialization): time 2.521e-05/0.4641, allocations: 80.14 kB / 0.9978 GB, free: 12.84 MB / 0.6857 GB Notification: Performance of collectInitialBindings (initialization): time 2.834e-05/0.4641, allocations: 23.78 kB / 0.9978 GB, free: 12.81 MB / 0.6857 GB Notification: Performance of simplifyInitialFunctions (initialization): time 3.677e-05/0.4641, allocations: 21.72 kB / 0.9978 GB, free: 12.79 MB / 0.6857 GB Notification: Performance of setup shared object (initialization): time 8.625e-05/0.4642, allocations: 318.8 kB / 0.9981 GB, free: 12.46 MB / 0.6857 GB Notification: Performance of preBalanceInitialSystem (initialization): time 2.625e-05/0.4642, allocations: 12 kB / 0.9981 GB, free: 12.45 MB / 0.6857 GB Notification: Performance of partitionIndependentBlocks (initialization): time 1.884e-05/0.4643, allocations: 8 kB / 0.9981 GB, free: 12.45 MB / 0.6857 GB Notification: Performance of analyzeInitialSystem (initialization): time 5.479e-05/0.4643, allocations: 36.78 kB / 0.9982 GB, free: 12.41 MB / 0.6857 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.81e-07/0.4643, allocations: 0 / 0.9982 GB, free: 12.41 MB / 0.6857 GB Notification: Performance of matching and sorting (n=7) (initialization): time 9.068e-05/0.4644, allocations: 65.69 kB / 0.9982 GB, free: 12.34 MB / 0.6857 GB Notification: Performance of prepare postOptimizeDAE: time 1.331e-05/0.4645, allocations: 10.28 kB / 0.9982 GB, free: 12.33 MB / 0.6857 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.907e-06/0.4645, allocations: 0 / 0.9982 GB, free: 12.33 MB / 0.6857 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.439e-05/0.4645, allocations: 4 kB / 0.9982 GB, free: 12.32 MB / 0.6857 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 5.222e-05/0.4645, allocations: 12 kB / 0.9982 GB, free: 12.31 MB / 0.6857 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.728e-06/0.4645, allocations: 0 / 0.9982 GB, free: 12.31 MB / 0.6857 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 1.7e-05/0.4646, allocations: 0 / 0.9982 GB, free: 12.31 MB / 0.6857 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.434e-06/0.4646, allocations: 4 kB / 0.9982 GB, free: 12.31 MB / 0.6857 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * 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 (7): * Single equations (assignments): 7 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 6.041e-05/0.4646, allocations: 121.7 kB / 0.9984 GB, free: 12.18 MB / 0.6857 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 1.458e-05/0.4647, allocations: 11.89 kB / 0.9984 GB, free: 12.17 MB / 0.6857 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001254/0.4648, allocations: 65.66 kB / 0.9984 GB, free: 12.09 MB / 0.6857 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.806e-06/0.4648, allocations: 0 / 0.9984 GB, free: 12.09 MB / 0.6857 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.755e-06/0.4648, allocations: 4.125 kB / 0.9984 GB, free: 12.09 MB / 0.6857 GB Notification: Performance of postOpt removeConstants (simulation): time 5.987e-05/0.4649, allocations: 93.09 kB / 0.9985 GB, free: 11.98 MB / 0.6857 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.253e-05/0.4649, allocations: 3.938 kB / 0.9985 GB, free: 11.98 MB / 0.6857 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 3.855e-05/0.4649, allocations: 0 / 0.9985 GB, free: 11.98 MB / 0.6857 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 1.56e-05/0.465, allocations: 7.984 kB / 0.9985 GB, free: 11.97 MB / 0.6857 GB Notification: Performance of postOpt createDAEmodeBDAE (simulation): time 0.0001477/0.4651, allocations: 144.9 kB / 0.9987 GB, free: 11.82 MB / 0.6857 GB Notification: Performance of postOpt symbolicJacobianDAE (simulation): time 0.0001804/0.4653, allocations: 250.7 kB / 0.9989 GB, free: 11.56 MB / 0.6857 GB Notification: Performance of postOpt setEvaluationStage (simulation): time 3.123e-05/0.4653, allocations: 20.08 kB / 0.9989 GB, free: 11.54 MB / 0.6857 GB Notification: Performance of sorting global known variables: time 2.963e-05/0.4654, allocations: 83.28 kB / 0.999 GB, free: 11.46 MB / 0.6857 GB Notification: Performance of Backend: time 2.71e-07/0.4654, allocations: 0 / 0.999 GB, free: 11.46 MB / 0.6857 GB Notification: Performance of simCode: created initialization part: time 0.0004779/0.4659, allocations: 154 kB / 0.9992 GB, free: 11.3 MB / 0.6857 GB Notification: Performance of SimCode: time 0.0004601/0.4663, allocations: 0.6254 MB / 0.9998 GB, free: 10.63 MB / 0.6857 GB Notification: Performance of Templates: time 0.003257/0.4696, allocations: 1.252 MB / 1.001 GB, free: 9.41 MB / 0.6857 GB make -j1 -f AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck.makefile (rm -f AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck.pipe ; mkfifo AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck.pipe ; head -c 1048576 < AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck.pipe >> ../files/AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck.sim & ./AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck -abortSlowSimulation -alarm=480 -lv LOG_STATS > AixLib_AixLib.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck.pipe 2>&1)