Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.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 1.4.0-development/package.mo", uses=false)
Using package AixLib with version 1.4.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.4.0-development/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.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile")
translateModel(AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001016/0.001016, allocations: 110.9 kB / 16.42 MB, free: 6.488 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0009915/0.0009915, allocations: 186.7 kB / 17.35 MB, free: 5.727 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.262/1.262, allocations: 222.9 MB / 241.1 MB, free: 15.14 MB / 206.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.1.1-master/package.mo): time 0.05624/0.05624, allocations: 12.04 MB / 303.3 MB, free: 3.094 MB / 238.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo): time 0.000518/0.000518, allocations: 31.7 kB / 356.3 MB, free: 13.96 MB / 302.1 MB
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/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 1.4.0-development/package.mo): time 1.788/1.788, allocations: 272.3 MB / 0.6657 GB, free: 18.36 MB / 478.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.001984/0.001984, allocations: 107.8 kB / 0.8935 GB, free: 15.08 MB / 0.67 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.4656/0.4676, allocations: 109.1 MB / 1 GB, free: 8.152 MB / 0.6857 GB
Notification: Performance of NFInst.instantiate(AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile): time 0.001993/0.4696, allocations: 1.441 MB / 1.002 GB, free: 7.027 MB / 0.6857 GB
Notification: Performance of NFInst.instExpressions: time 0.001108/0.4707, allocations: 0.8984 MB / 1.002 GB, free: 6.336 MB / 0.6857 GB
Notification: Performance of NFInst.updateImplicitVariability: time 3.62e-05/0.4708, allocations: 3.938 kB / 1.002 GB, free: 6.332 MB / 0.6857 GB
Notification: Performance of NFTyping.typeComponents: time 0.0001174/0.4709, allocations: 6.234 kB / 1.002 GB, free: 6.328 MB / 0.6857 GB
Notification: Performance of NFTyping.typeBindings: time 0.000451/0.4714, allocations: 138.5 kB / 1.003 GB, free: 6.242 MB / 0.6857 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0001971/0.4716, allocations: 110.9 kB / 1.003 GB, free: 6.176 MB / 0.6857 GB
Notification: Performance of NFFlatten.flatten: time 8.858e-05/0.4717, allocations: 65.78 kB / 1.003 GB, free: 6.141 MB / 0.6857 GB
Notification: Performance of NFFlatten.resolveConnections: time 3.582e-05/0.4717, allocations: 3.312 kB / 1.003 GB, free: 6.141 MB / 0.6857 GB
Notification: Performance of NFEvalConstants.evaluate: time 7.618e-05/0.4718, allocations: 39.11 kB / 1.003 GB, free: 6.117 MB / 0.6857 GB
Notification: Performance of NFSimplifyModel.simplify: time 9.361e-05/0.4719, allocations: 43.25 kB / 1.003 GB, free: 6.094 MB / 0.6857 GB
Notification: Performance of NFPackage.collectConstants: time 1.822e-05/0.4719, allocations: 4.062 kB / 1.003 GB, free: 6.094 MB / 0.6857 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0003205/0.4722, allocations: 233.3 kB / 1.003 GB, free: 5.969 MB / 0.6857 GB
Notification: Performance of NFScalarize.scalarize: time 8.775e-05/0.4723, allocations: 52.06 kB / 1.003 GB, free: 5.941 MB / 0.6857 GB
Notification: Performance of NFVerifyModel.verify: time 4.976e-05/0.4724, allocations: 44.06 kB / 1.003 GB, free: 5.914 MB / 0.6857 GB
Notification: Performance of NFConvertDAE.convert: time 0.00028/0.4727, allocations: 263 kB / 1.003 GB, free: 5.762 MB / 0.6857 GB
Notification: Performance of FrontEnd - DAE generated: time 3.797e-06/0.4727, allocations: 0 / 1.003 GB, free: 5.762 MB / 0.6857 GB
Notification: Performance of FrontEnd: time 1.533e-06/0.4727, allocations: 0 / 1.003 GB, free: 5.762 MB / 0.6857 GB
Notification: Performance of Transformations before backend: time 3.998e-06/0.4727, allocations: 0 / 1.003 GB, free: 5.762 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: 3
 * Number of variables: 3
Notification: Performance of Generate backend data structure: time 0.0004981/0.4732, allocations: 474.4 kB / 1.004 GB, free: 5.305 MB / 0.6857 GB
Notification: Performance of prepare preOptimizeDAE: time 3.474e-05/0.4732, allocations: 9.438 kB / 1.004 GB, free: 5.305 MB / 0.6857 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 4.525e-05/0.4733, allocations: 18.94 kB / 1.004 GB, free: 5.293 MB / 0.6857 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.000212/0.4735, allocations: 266 kB / 1.004 GB, free: 5.047 MB / 0.6857 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.408e-06/0.4735, allocations: 1.406 kB / 1.004 GB, free: 5.047 MB / 0.6857 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 1.209e-05/0.4735, allocations: 10.03 kB / 1.004 GB, free: 5.039 MB / 0.6857 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0001573/0.4737, allocations: 67.88 kB / 1.004 GB, free: 4.996 MB / 0.6857 GB
Notification: Performance of preOpt findStateOrder (simulation): time 6.212e-06/0.4737, allocations: 5.125 kB / 1.004 GB, free: 4.992 MB / 0.6857 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.018e-05/0.4737, allocations: 7.984 kB / 1.004 GB, free: 4.984 MB / 0.6857 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.248e-06/0.4737, allocations: 1.094 kB / 1.004 GB, free: 4.984 MB / 0.6857 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001876/0.4739, allocations: 80.81 kB / 1.004 GB, free: 4.961 MB / 0.6857 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0001794/0.4741, allocations: 229.7 kB / 1.004 GB, free: 4.734 MB / 0.6857 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0002099/0.4743, allocations: 124 kB / 1.005 GB, free: 4.68 MB / 0.6857 GB
Notification: Performance of preOpt resolveLoops (simulation): time 9.905e-05/0.4744, allocations: 47.09 kB / 1.005 GB, free: 4.66 MB / 0.6857 GB
Notification: Performance of preOpt evalFunc (simulation): time 3.372e-05/0.4745, allocations: 19.14 kB / 1.005 GB, free: 4.652 MB / 0.6857 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.458e-05/0.4745, allocations: 31.72 kB / 1.005 GB, free: 4.613 MB / 0.6857 GB
Notification: Performance of pre-optimization done (n=3): time 1.132e-06/0.4745, allocations: 0 / 1.005 GB, free: 4.613 MB / 0.6857 GB
Notification: Performance of matching and sorting (n=3): time 0.0003707/0.4749, allocations: 170.4 kB / 1.005 GB, free: 4.535 MB / 0.6857 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 1.275e-05/0.4749, allocations: 51.41 kB / 1.005 GB, free: 4.473 MB / 0.6857 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002179/0.4751, allocations: 299.2 kB / 1.005 GB, free: 4.285 MB / 0.6857 GB
Notification: Performance of collectPreVariables (initialization): time 9.017e-06/0.4751, allocations: 30.86 kB / 1.005 GB, free: 4.25 MB / 0.6857 GB
Notification: Performance of collectInitialEqns (initialization): time 4.206e-05/0.4752, allocations: 120.9 kB / 1.005 GB, free: 4.137 MB / 0.6857 GB
Notification: Performance of collectInitialBindings (initialization): time 2.015e-05/0.4752, allocations: 8.844 kB / 1.005 GB, free: 4.129 MB / 0.6857 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 2.837e-05/0.4753, allocations: 12.97 kB / 1.005 GB, free: 4.113 MB / 0.6857 GB
Notification: Performance of setup shared object (initialization): time 4.318e-05/0.4753, allocations: 328.5 kB / 1.006 GB, free: 3.789 MB / 0.6857 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 9.569e-05/0.4754, allocations: 44.59 kB / 1.006 GB, free: 3.773 MB / 0.6857 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.000105/0.4755, allocations: 58.53 kB / 1.006 GB, free: 3.738 MB / 0.6857 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0001804/0.4757, allocations: 87.89 kB / 1.006 GB, free: 3.707 MB / 0.6857 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.532e-06/0.4757, allocations: 0 / 1.006 GB, free: 3.707 MB / 0.6857 GB
Notification: Performance of matching and sorting (n=3) (initialization): time 0.0002254/0.4759, allocations: 137.6 kB / 1.006 GB, free: 3.633 MB / 0.6857 GB
Notification: Performance of prepare postOptimizeDAE: time 1.193e-05/0.476, allocations: 4.719 kB / 1.006 GB, free: 3.633 MB / 0.6857 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.496e-06/0.476, allocations: 1.094 kB / 1.006 GB, free: 3.633 MB / 0.6857 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.087e-05/0.476, allocations: 0 / 1.006 GB, free: 3.633 MB / 0.6857 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 6.527e-05/0.476, allocations: 11.89 kB / 1.006 GB, free: 3.629 MB / 0.6857 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.073e-06/0.4761, allocations: 0 / 1.006 GB, free: 3.629 MB / 0.6857 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 9.068e-05/0.4762, allocations: 9.609 kB / 1.006 GB, free: 3.625 MB / 0.6857 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.981e-06/0.4762, allocations: 5.094 kB / 1.006 GB, free: 3.621 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 (3):
 * Single equations (assignments): 3
 * 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 6.295e-05/0.4762, allocations: 128.6 kB / 1.006 GB, free: 3.5 MB / 0.6857 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 1.976e-05/0.4763, allocations: 18.56 kB / 1.006 GB, free: 3.488 MB / 0.6857 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0002723/0.4765, allocations: 139.5 kB / 1.006 GB, free: 3.41 MB / 0.6857 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.705e-06/0.4765, allocations: 0 / 1.006 GB, free: 3.41 MB / 0.6857 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.72e-07/0.4766, allocations: 0 / 1.006 GB, free: 3.41 MB / 0.6857 GB
Notification: Performance of postOpt removeConstants (simulation): time 4.212e-05/0.4766, allocations: 95.81 kB / 1.006 GB, free: 3.305 MB / 0.6857 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 2.085e-05/0.4766, allocations: 1.344 kB / 1.006 GB, free: 3.305 MB / 0.6857 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 6.455e-05/0.4767, allocations: 7.562 kB / 1.006 GB, free: 3.301 MB / 0.6857 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 2.785e-05/0.4767, allocations: 5.484 kB / 1.006 GB, free: 3.297 MB / 0.6857 GB
Notification: Performance of postOpt createDAEmodeBDAE (simulation): time 0.0002549/0.477, allocations: 204.7 kB / 1.007 GB, free: 3.152 MB / 0.6857 GB
Notification: Performance of postOpt symbolicJacobianDAE (simulation): time 0.0002421/0.4772, allocations: 299.3 kB / 1.007 GB, free: 2.91 MB / 0.6857 GB
Notification: Performance of postOpt setEvaluationStage (simulation): time 0.0001038/0.4774, allocations: 50.36 kB / 1.007 GB, free: 2.891 MB / 0.6857 GB
Notification: Performance of sorting global known variables: time 0.0001485/0.4775, allocations: 222.5 kB / 1.007 GB, free: 2.758 MB / 0.6857 GB
Notification: Performance of Backend: time 2.51e-07/0.4775, allocations: 0 / 1.007 GB, free: 2.758 MB / 0.6857 GB
Notification: Performance of simCode: created initialization part: time 0.0005718/0.4781, allocations: 181.8 kB / 1.007 GB, free: 2.656 MB / 0.6857 GB
Notification: Performance of SimCode: time 0.000461/0.4786, allocations: 0.7432 MB / 1.008 GB, free: 1.961 MB / 0.6857 GB
Notification: Performance of Templates: time 0.004458/0.483, allocations: 2.304 MB / 1.01 GB, free: 0.8164 MB / 0.6857 GB
make -j1 -f AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.makefile
(rm -f AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.pipe ; mkfifo AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.pipe ; head -c 1048576 < AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.pipe >> ../files/AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.sim & ./AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile  -abortSlowSimulation -alarm=480 -lv LOG_STATS > AixLib_latest_AixLib.Airflow.Multizone.BaseClasses.Examples.WindPressureProfile.pipe 2>&1)