Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_Buildings.Occupants.Residential.Heating.Validation.Nicol2001HeatingPakistan.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.Occupants.Residential.Heating.Validation.Nicol2001HeatingPakistan,fileNamePrefix="Buildings_8_Buildings_Occupants_Residential_Heating_Validation_Nicol2001HeatingPakistan",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(Buildings.Occupants.Residential.Heating.Validation.Nicol2001HeatingPakistan,fileNamePrefix="Buildings_8_Buildings_Occupants_Residential_Heating_Validation_Nicol2001HeatingPakistan",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 0.001094/0.001094, allocations: 108 kB / 15.61 MB, free: 152 kB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001208/0.001208, allocations: 193.1 kB / 16.53 MB, free: 6.664 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.342/1.342, allocations: 205.1 MB / 222.4 MB, free: 4.602 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 1.703/1.703, allocations: 292.3 MB / 0.5489 GB, free: 12.81 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 0.001396/0.001396, allocations: 71.14 kB / 0.6716 GB, free: 26.32 MB / 0.5294 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1889/0.1903, allocations: 114.6 MB / 0.7835 GB, free: 13.4 MB / 0.6075 GB
Notification: Performance of NFInst.instantiate(Buildings.Occupants.Residential.Heating.Validation.Nicol2001HeatingPakistan): time 0.002471/0.1928, allocations: 1.481 MB / 0.7849 GB, free: 11.89 MB / 0.6075 GB
Notification: Performance of NFInst.instExpressions: time 0.001123/0.1939, allocations: 0.7731 MB / 0.7857 GB, free: 11.11 MB / 0.6075 GB
Notification: Performance of NFInst.updateImplicitVariability: time 3.378e-05/0.194, allocations: 0 / 0.7857 GB, free: 11.11 MB / 0.6075 GB
Notification: Performance of NFTyping.typeComponents: time 2.623e-05/0.194, allocations: 3.938 kB / 0.7857 GB, free: 11.11 MB / 0.6075 GB
Notification: Performance of NFTyping.typeBindings: time 4.628e-05/0.1941, allocations: 11.86 kB / 0.7857 GB, free: 11.1 MB / 0.6075 GB
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Math/Random.mo:127:7-213:23:writable] Warning: Pure function 'Modelica.Math.Random.Generators.Xorshift64star.initialState' contains a call to impure function 'Modelica.Math.Random.Generators.Xorshift64star.random'.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Math/Random.mo:851:5-931:39:writable] Warning: Pure function 'Modelica.Math.Random.Utilities.initialStateWithXorshift64star' contains a call to impure function 'Modelica.Math.Random.Generators.Xorshift64star.initialState'.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Math/Random.mo:499:7-563:23:writable] Warning: Pure function 'Modelica.Math.Random.Generators.Xorshift1024star.initialState' contains a call to impure function 'Modelica.Math.Random.Utilities.initialStateWithXorshift64star'.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/Occupants/BaseClasses/binaryVariableGeneration.mo:2:1-32:29:writable] Warning: Pure function 'Buildings.Occupants.BaseClasses.binaryVariableGeneration' contains a call to impure function 'Modelica.Math.Random.Generators.Xorshift1024star.initialState'.
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/Occupants/BaseClasses/binaryVariableGeneration.mo:11:3-11:96:writable] Warning: localSeed was used before it was defined (given a value). Additional such uses may exist for the variable, but some messages were suppressed.
Notification: Performance of NFTyping.typeClassSections: time 0.0005102/0.1946, allocations: 127.6 kB / 0.7858 GB, free: 10.97 MB / 0.6075 GB
Notification: Performance of NFFlatten.flatten: time 8.768e-05/0.1947, allocations: 75.72 kB / 0.7859 GB, free: 10.9 MB / 0.6075 GB
Notification: Performance of NFFlatten.resolveConnections: time 8.249e-05/0.1948, allocations: 15.98 kB / 0.7859 GB, free: 10.88 MB / 0.6075 GB
Notification: Performance of NFEvalConstants.evaluate: time 7.315e-05/0.1949, allocations: 39.84 kB / 0.7859 GB, free: 10.84 MB / 0.6075 GB
Notification: Performance of NFSimplifyModel.simplify: time 5.972e-05/0.1949, allocations: 35.89 kB / 0.786 GB, free: 10.81 MB / 0.6075 GB
Notification: Performance of NFPackage.collectConstants: time 2.032e-05/0.1949, allocations: 4 kB / 0.786 GB, free: 10.8 MB / 0.6075 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0001682/0.1951, allocations: 95.91 kB / 0.7861 GB, free: 10.71 MB / 0.6075 GB
Notification: Performance of NFScalarize.scalarize: time 2.475e-05/0.1952, allocations: 15.92 kB / 0.7861 GB, free: 10.7 MB / 0.6075 GB
Notification: Performance of NFVerifyModel.verify: time 3.915e-05/0.1952, allocations: 27.86 kB / 0.7861 GB, free: 10.67 MB / 0.6075 GB
Notification: Performance of NFConvertDAE.convert: time 0.0001937/0.1954, allocations: 143.8 kB / 0.7862 GB, free: 10.53 MB / 0.6075 GB
Notification: Performance of FrontEnd - DAE generated: time 3.566e-06/0.1954, allocations: 0 / 0.7862 GB, free: 10.53 MB / 0.6075 GB
Notification: Performance of FrontEnd: time 1.152e-06/0.1954, allocations: 4 kB / 0.7862 GB, free: 10.52 MB / 0.6075 GB
Notification: Performance of Transformations before backend: time 3.727e-06/0.1954, allocations: 0 / 0.7862 GB, free: 10.52 MB / 0.6075 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 8
 * Number of variables: 8
Notification: Performance of Generate backend data structure: time 0.0005365/0.196, allocations: 421 kB / 0.7866 GB, free: 10.06 MB / 0.6075 GB
Notification: Performance of prepare preOptimizeDAE: time 3.288e-05/0.196, allocations: 8.031 kB / 0.7867 GB, free: 10.05 MB / 0.6075 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 2.988e-05/0.196, allocations: 38.69 kB / 0.7867 GB, free: 10 MB / 0.6075 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 3.261e-05/0.1961, allocations: 8.844 kB / 0.7867 GB, free: 9.996 MB / 0.6075 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 9.853e-05/0.1962, allocations: 180.2 kB / 0.7869 GB, free: 9.781 MB / 0.6075 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.814e-05/0.1962, allocations: 4.375 kB / 0.7869 GB, free: 9.777 MB / 0.6075 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 2.907e-05/0.1962, allocations: 8.375 kB / 0.7869 GB, free: 9.77 MB / 0.6075 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0001648/0.1964, allocations: 73.72 kB / 0.787 GB, free: 9.691 MB / 0.6075 GB
Notification: Performance of preOpt findStateOrder (simulation): time 6.602e-06/0.1964, allocations: 0 / 0.787 GB, free: 9.691 MB / 0.6075 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.226e-05/0.1964, allocations: 4 kB / 0.787 GB, free: 9.688 MB / 0.6075 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.737e-06/0.1965, allocations: 0 / 0.787 GB, free: 9.688 MB / 0.6075 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001235/0.1966, allocations: 35.97 kB / 0.787 GB, free: 9.652 MB / 0.6075 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0005336/0.1971, allocations: 320.7 kB / 0.7873 GB, free: 9.289 MB / 0.6075 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0001132/0.1973, allocations: 46.55 kB / 0.7873 GB, free: 9.234 MB / 0.6075 GB
Notification: Performance of preOpt resolveLoops (simulation): time 8.232e-05/0.1973, allocations: 40.91 kB / 0.7874 GB, free: 9.191 MB / 0.6075 GB
Notification: Performance of preOpt evalFunc (simulation): time 1.417e-05/0.1974, allocations: 0 / 0.7874 GB, free: 9.191 MB / 0.6075 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0001665/0.1975, allocations: 83.44 kB / 0.7875 GB, free: 9.098 MB / 0.6075 GB
Notification: Performance of pre-optimization done (n=7): time 1.282e-06/0.1975, allocations: 0 / 0.7875 GB, free: 9.098 MB / 0.6075 GB
Notification: Performance of matching and sorting (n=7): time 0.0003559/0.1979, allocations: 133.6 kB / 0.7876 GB, free: 8.961 MB / 0.6075 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.358e-05/0.1979, allocations: 55.41 kB / 0.7876 GB, free: 8.895 MB / 0.6075 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 8.185e-05/0.198, allocations: 133.6 kB / 0.7878 GB, free: 8.754 MB / 0.6075 GB
Notification: Performance of collectPreVariables (initialization): time 1.689e-05/0.1981, allocations: 29.7 kB / 0.7878 GB, free: 8.719 MB / 0.6075 GB
Notification: Performance of collectInitialEqns (initialization): time 4.49e-05/0.1981, allocations: 92.08 kB / 0.7879 GB, free: 8.625 MB / 0.6075 GB
Notification: Performance of collectInitialBindings (initialization): time 1.6e-05/0.1981, allocations: 15.81 kB / 0.7879 GB, free: 8.609 MB / 0.6075 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 4.915e-05/0.1982, allocations: 25.7 kB / 0.7879 GB, free: 8.578 MB / 0.6075 GB
Notification: Performance of setup shared object (initialization): time 8.722e-05/0.1983, allocations: 326.8 kB / 0.7882 GB, free: 8.25 MB / 0.6075 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 7.927e-05/0.1984, allocations: 27.98 kB / 0.7883 GB, free: 8.223 MB / 0.6075 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 8.877e-05/0.1985, allocations: 50.48 kB / 0.7883 GB, free: 8.164 MB / 0.6075 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0001466/0.1986, allocations: 78.48 kB / 0.7884 GB, free: 8.078 MB / 0.6075 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.563e-06/0.1986, allocations: 0 / 0.7884 GB, free: 8.078 MB / 0.6075 GB
Notification: Performance of matching and sorting (n=11) (initialization): time 0.0002245/0.1989, allocations: 117.4 kB / 0.7885 GB, free: 7.957 MB / 0.6075 GB
Notification: Performance of prepare postOptimizeDAE: time 1.173e-05/0.1989, allocations: 4 kB / 0.7885 GB, free: 7.953 MB / 0.6075 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.677e-06/0.1989, allocations: 0 / 0.7885 GB, free: 7.953 MB / 0.6075 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.405e-05/0.1989, allocations: 4 kB / 0.7885 GB, free: 7.949 MB / 0.6075 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 8.812e-05/0.199, allocations: 16.05 kB / 0.7885 GB, free: 7.934 MB / 0.6075 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.729e-06/0.199, allocations: 0 / 0.7885 GB, free: 7.934 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 6.335e-05/0.1991, allocations: 4 kB / 0.7885 GB, free: 7.93 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.347e-05/0.1991, allocations: 7.984 kB / 0.7885 GB, free: 7.922 MB / 0.6075 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 3
 * Number of states: 0 ()
 * Number of discrete variables: 9 (hea.occ,hea.curSeed,$PRE.hea.curSeed,hea.p,$PRE.hea.p,hea.on,$PRE.hea.on,hea.sampleTrigger,$whenCondition1)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (11):
 * Single equations (assignments): 11
 * 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 7.975e-05/0.1992, allocations: 130.3 kB / 0.7887 GB, free: 7.785 MB / 0.6075 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 1.707e-05/0.1992, allocations: 7.906 kB / 0.7887 GB, free: 7.777 MB / 0.6075 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 2.057e-05/0.1992, allocations: 4.375 kB / 0.7887 GB, free: 7.773 MB / 0.6075 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.477e-06/0.1992, allocations: 4 kB / 0.7887 GB, free: 7.77 MB / 0.6075 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 3.236e-06/0.1992, allocations: 4 kB / 0.7887 GB, free: 7.766 MB / 0.6075 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.345e-06/0.1993, allocations: 0 / 0.7887 GB, free: 7.766 MB / 0.6075 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0004002/0.1997, allocations: 378.5 kB / 0.789 GB, free: 7.34 MB / 0.6075 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.443e-06/0.1997, allocations: 0 / 0.789 GB, free: 7.34 MB / 0.6075 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 4.061e-05/0.1997, allocations: 7.984 kB / 0.789 GB, free: 7.332 MB / 0.6075 GB
Notification: Performance of postOpt tearingSystem (simulation): time 3.426e-06/0.1997, allocations: 0 / 0.789 GB, free: 7.332 MB / 0.6075 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.073e-05/0.1997, allocations: 7.938 kB / 0.789 GB, free: 7.324 MB / 0.6075 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.594e-06/0.1998, allocations: 3.938 kB / 0.7891 GB, free: 7.32 MB / 0.6075 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.12e-07/0.1998, allocations: 8 kB / 0.7891 GB, free: 7.312 MB / 0.6075 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.000255/0.2, allocations: 207.4 kB / 0.7893 GB, free: 7.094 MB / 0.6075 GB
Notification: Performance of postOpt removeConstants (simulation): time 3.706e-05/0.2001, allocations: 89 kB / 0.7893 GB, free: 6.988 MB / 0.6075 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.776e-05/0.2001, allocations: 0 / 0.7893 GB, free: 6.988 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 9.29e-05/0.2002, allocations: 11.92 kB / 0.7894 GB, free: 6.977 MB / 0.6075 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 3.978e-05/0.2002, allocations: 0 / 0.7894 GB, free: 6.977 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.088e-05/0.2003, allocations: 8 kB / 0.7894 GB, free: 6.969 MB / 0.6075 GB
Notification: Performance of sorting global known variables: time 4.536e-05/0.2003, allocations: 99.2 kB / 0.7895 GB, free: 6.871 MB / 0.6075 GB
Notification: Performance of sort global known variables: time 1.3e-07/0.2003, allocations: 0 / 0.7895 GB, free: 6.871 MB / 0.6075 GB
Notification: Performance of remove unused functions: time 0.0002831/0.2006, allocations: 39.98 kB / 0.7895 GB, free: 6.832 MB / 0.6075 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 0 ()
 * Number of discrete variables: 6 (hea.sampleTrigger,$whenCondition1,hea.occ,hea.on,hea.p,hea.curSeed)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (7):
 * Single equations (assignments): 4
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 3
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of Backend phase and start with SimCode phase: time 0.000661/0.2013, allocations: 0.8053 MB / 0.7903 GB, free: 6.02 MB / 0.6075 GB
Notification: Performance of simCode: created initialization part: time 0.0002211/0.2015, allocations: 75.89 kB / 0.7904 GB, free: 5.945 MB / 0.6075 GB
Notification: Performance of simCode: created event and clocks part: time 1.633e-06/0.2015, allocations: 0 / 0.7904 GB, free: 5.945 MB / 0.6075 GB
Notification: Performance of simCode: created simulation system equations: time 9.257e-05/0.2016, allocations: 31.98 kB / 0.7904 GB, free: 5.914 MB / 0.6075 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002427/0.2019, allocations: 22.3 kB / 0.7904 GB, free: 5.895 MB / 0.6075 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001391/0.2033, allocations: 1.486 MB / 0.7919 GB, free: 4.312 MB / 0.6075 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001965/0.2035, allocations: 0.6885 MB / 0.7925 GB, free: 3.598 MB / 0.6075 GB
Notification: Performance of simCode: alias equations: time 3.44e-05/0.2035, allocations: 7.984 kB / 0.7925 GB, free: 3.59 MB / 0.6075 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 3.861e-05/0.2036, allocations: 19.44 kB / 0.7926 GB, free: 3.574 MB / 0.6075 GB
Notification: Performance of SimCode: time 2.11e-07/0.2036, allocations: 0 / 0.7926 GB, free: 3.574 MB / 0.6075 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.01694/0.2205, allocations: 2.614 MB / 0.7951 GB, free: 1.098 MB / 0.6075 GB
Notification: Performance of buildModelFMU: Generate platform static: time 7.047/7.268, allocations: 14.75 kB / 0.7951 GB, free: 1.086 MB / 0.6075 GB
(rm -f Buildings_8_Buildings.Occupants.Residential.Heating.Validation.Nicol2001HeatingPakistan.pipe ; mkfifo Buildings_8_Buildings.Occupants.Residential.Heating.Validation.Nicol2001HeatingPakistan.pipe ; head -c 1048576 < Buildings_8_Buildings.Occupants.Residential.Heating.Validation.Nicol2001HeatingPakistan.pipe >> ../files/Buildings_8_Buildings.Occupants.Residential.Heating.Validation.Nicol2001HeatingPakistan.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator  --tempDir=temp_Buildings_8_Buildings_Occupants_Residential_Heating_Validation_Nicol2001HeatingPakistan_fmu --startTime=0 --stopTime=3600 --timeout=50 --tolerance=1e-06 Buildings_8_Buildings_Occupants_Residential_Heating_Validation_Nicol2001HeatingPakistan.fmu > Buildings_8_Buildings.Occupants.Residential.Heating.Validation.Nicol2001HeatingPakistan.pipe 2>&1)