Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr AixLib_latest_AixLib.Utilities.Math.Functions.Examples.Factorial.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2-development/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/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.1.1/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo", uses=false) 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/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) 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 AixLib with version 1.3.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2-development/package.mo) Running command: "" <> buildModelFMU(AixLib.Utilities.Math.Functions.Examples.Factorial,fileNamePrefix="AixLib_latest_AixLib_Utilities_Math_Functions_Examples_Factorial",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(AixLib.Utilities.Math.Functions.Examples.Factorial,fileNamePrefix="AixLib_latest_AixLib_Utilities_Math_Functions_Examples_Factorial",fmuType="me",version="2.0",platforms={"static"}) [:1:1-1:32:writable] Error: Class GC_set_max_heap_size not found in scope (looking for a function or record). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2-development/BoundaryConditions/InternalGains/Examples/InternalGains/Lights.mo:27:20-27:398:writable] Warning: Lexer treating \ as \\, since \ is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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 1.3.2-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. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/AixLib 1.3.2-development/package.mo): time 1.52/1.52, allocations: 265 MB / 272.3 MB, free: 8.766 MB / 218.8 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001064/0.001063, allocations: 193.2 kB / 329.7 MB, free: 344 kB / 266.8 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.208/1.208, allocations: 221.4 MB / 0.5941 GB, free: 14.5 MB / 458.8 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009569/0.0009568, allocations: 100.6 kB / 0.6993 GB, free: 2.629 MB / 0.5418 GB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.1.1/package.mo): time 0.05072/0.05072, allocations: 11.89 MB / 0.816 GB, free: 65.55 MB / 0.5418 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo:9:42-9:258:writable] Notification: This is an open source dummy package of a commercial library. If you want it to be supported, you will need to add an implemention on our github repository: https://github.com/Modelica-OpenVendorSpecificLibraries. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/SDF master/package.mo): time 0.0003698/0.0003697, allocations: 12.86 kB / 0.924 GB, free: 86.99 MB / 0.573 GB Notification: Performance of FrontEnd - loaded program: time 0.2015/0.2019, allocations: 117.8 MB / 1.039 GB, free: 9.137 MB / 0.5887 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2464/0.4482, allocations: 110.2 MB / 1.147 GB, free: 10.8 MB / 0.698 GB Notification: Performance of FrontEnd - scodeFlatten: time 0.5388/0.9871, allocations: 133.1 MB / 1.277 GB, free: 56.89 MB / 0.7293 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0001959/0.9874, allocations: 68.78 kB / 1.277 GB, free: 56.85 MB / 0.7293 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2 * Number of variables: 2 Notification: Performance of Generate backend data structure: time 0.001076/0.9884, allocations: 0.5195 MB / 1.277 GB, free: 56.34 MB / 0.7293 GB Notification: Performance of prepare preOptimizeDAE: time 3.445e-05/0.9885, allocations: 12 kB / 1.277 GB, free: 56.33 MB / 0.7293 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 2.385e-05/0.9885, allocations: 0 / 1.277 GB, free: 56.33 MB / 0.7293 GB Notification: Performance of preOpt evaluateParameters (simulation): time 5.055e-05/0.9886, allocations: 161.5 kB / 1.277 GB, free: 56.13 MB / 0.7293 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.177e-06/0.9886, allocations: 3.938 kB / 1.277 GB, free: 56.13 MB / 0.7293 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.143e-06/0.9886, allocations: 0 / 1.277 GB, free: 56.13 MB / 0.7293 GB Notification: Performance of preOpt removeEqualFunctionCalls (simulation): time 5.363e-05/0.9887, allocations: 7.906 kB / 1.277 GB, free: 56.12 MB / 0.7293 GB Notification: Performance of preOpt clockPartitioning (simulation): time 4.611e-05/0.9887, allocations: 37.25 kB / 1.277 GB, free: 56.08 MB / 0.7293 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.572e-06/0.9887, allocations: 0 / 1.277 GB, free: 56.08 MB / 0.7293 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.466e-06/0.9887, allocations: 1.359 kB / 1.277 GB, free: 56.08 MB / 0.7293 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.537e-06/0.9887, allocations: 0 / 1.277 GB, free: 56.08 MB / 0.7293 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 8.691e-05/0.9888, allocations: 125.6 kB / 1.278 GB, free: 55.93 MB / 0.7293 GB Notification: Performance of preOpt comSubExp (simulation): time 3.51e-05/0.9889, allocations: 22.59 kB / 1.278 GB, free: 55.89 MB / 0.7293 GB Notification: Performance of preOpt resolveLoops (simulation): time 1.662e-05/0.9889, allocations: 13.83 kB / 1.278 GB, free: 55.88 MB / 0.7293 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001186/0.989, allocations: 84.77 kB / 1.278 GB, free: 55.79 MB / 0.7293 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.366e-05/0.9891, allocations: 35.59 kB / 1.278 GB, free: 55.74 MB / 0.7293 GB Notification: Performance of pre-optimization done (n=2): time 9.32e-07/0.9891, allocations: 0.5625 kB / 1.278 GB, free: 55.74 MB / 0.7293 GB Notification: Performance of matching and sorting (n=2): time 0.0001204/0.9892, allocations: 42.5 kB / 1.278 GB, free: 55.7 MB / 0.7293 GB Notification: Performance of inlineWhenForInitialization (initialization): time 1.903e-05/0.9892, allocations: 52.31 kB / 1.278 GB, free: 55.63 MB / 0.7293 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 1.734e-05/0.9892, allocations: 88.38 kB / 1.278 GB, free: 55.54 MB / 0.7293 GB Notification: Performance of collectPreVariables (initialization): time 6.341e-06/0.9892, allocations: 26.36 kB / 1.278 GB, free: 55.51 MB / 0.7293 GB Notification: Performance of collectInitialEqns (initialization): time 9.458e-06/0.9893, allocations: 80.14 kB / 1.278 GB, free: 55.43 MB / 0.7293 GB Notification: Performance of collectInitialBindings (initialization): time 1.527e-05/0.9893, allocations: 4.438 kB / 1.278 GB, free: 55.43 MB / 0.7293 GB Notification: Performance of simplifyInitialFunctions (initialization): time 2.254e-06/0.9893, allocations: 3.188 kB / 1.278 GB, free: 55.43 MB / 0.7293 GB Notification: Performance of setup shared object (initialization): time 4.378e-05/0.9893, allocations: 314.8 kB / 1.278 GB, free: 55.11 MB / 0.7293 GB Notification: Performance of preBalanceInitialSystem (initialization): time 7.784e-06/0.9894, allocations: 4 kB / 1.278 GB, free: 55.11 MB / 0.7293 GB Notification: Performance of partitionIndependentBlocks (initialization): time 5.67e-06/0.9894, allocations: 0 / 1.278 GB, free: 55.11 MB / 0.7293 GB Notification: Performance of analyzeInitialSystem (initialization): time 3.119e-05/0.9894, allocations: 7.312 kB / 1.278 GB, free: 55.1 MB / 0.7293 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.052e-06/0.9894, allocations: 0 / 1.278 GB, free: 55.1 MB / 0.7293 GB Notification: Performance of matching and sorting (n=2) (initialization): time 6.153e-05/0.9895, allocations: 43.25 kB / 1.278 GB, free: 55.05 MB / 0.7293 GB Notification: Performance of prepare postOptimizeDAE: time 9.067e-06/0.9895, allocations: 4.781 kB / 1.278 GB, free: 55.05 MB / 0.7293 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.669e-06/0.9895, allocations: 0.625 kB / 1.278 GB, free: 55.05 MB / 0.7293 GB Notification: Performance of postOpt tearingSystem (initialization): time 8.506e-06/0.9895, allocations: 0 / 1.278 GB, free: 55.05 MB / 0.7293 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 4.785e-05/0.9896, allocations: 4.719 kB / 1.278 GB, free: 55.05 MB / 0.7293 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.787e-06/0.9896, allocations: 0 / 1.278 GB, free: 55.05 MB / 0.7293 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 1.232e-05/0.9896, allocations: 0.625 kB / 1.278 GB, free: 55.05 MB / 0.7293 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.988e-06/0.9896, allocations: 8.125 kB / 1.278 GB, free: 55.04 MB / 0.7293 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 2 (fac,n) * Number of discrete states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (2): * Single equations (assignments): 2 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 3.883e-05/0.9896, allocations: 114.4 kB / 1.278 GB, free: 54.92 MB / 0.7293 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.342e-06/0.9897, allocations: 0 / 1.278 GB, free: 54.92 MB / 0.7293 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 8.96e-05/0.9897, allocations: 42.89 kB / 1.279 GB, free: 54.88 MB / 0.7293 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.204e-06/0.9898, allocations: 0 / 1.279 GB, free: 54.88 MB / 0.7293 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.33e-06/0.9898, allocations: 11.86 kB / 1.279 GB, free: 54.88 MB / 0.7293 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.986e-06/0.9898, allocations: 0 / 1.279 GB, free: 54.88 MB / 0.7293 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 4.077e-05/0.9898, allocations: 130.2 kB / 1.279 GB, free: 54.71 MB / 0.7293 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.52e-07/0.9898, allocations: 0 / 1.279 GB, free: 54.71 MB / 0.7293 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 2.122e-05/0.9899, allocations: 4.031 kB / 1.279 GB, free: 54.71 MB / 0.7293 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.174e-06/0.9899, allocations: 4 kB / 1.279 GB, free: 54.7 MB / 0.7293 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.511e-06/0.9899, allocations: 0 / 1.279 GB, free: 54.7 MB / 0.7293 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.473e-06/0.9899, allocations: 3.906 kB / 1.279 GB, free: 54.7 MB / 0.7293 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.943e-06/0.9899, allocations: 3.984 kB / 1.279 GB, free: 54.7 MB / 0.7293 GB Notification: Performance of postOpt detectJacobianSparsePattern (simulation): time 6.32e-05/0.99, allocations: 60.86 kB / 1.279 GB, free: 54.62 MB / 0.7293 GB Notification: Performance of postOpt generateSymbolicLinearization (simulation): time 8.533e-05/0.99, allocations: 449.3 kB / 1.279 GB, free: 54.17 MB / 0.7293 GB Notification: Performance of postOpt removeConstants (simulation): time 1.489e-05/0.9901, allocations: 85.05 kB / 1.279 GB, free: 54.07 MB / 0.7293 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.075e-05/0.9901, allocations: 1.219 kB / 1.279 GB, free: 54.07 MB / 0.7293 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 1.26e-05/0.9901, allocations: 7.891 kB / 1.279 GB, free: 54.06 MB / 0.7293 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 2.076e-05/0.9901, allocations: 0 / 1.279 GB, free: 54.06 MB / 0.7293 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.184e-06/0.9901, allocations: 0 / 1.279 GB, free: 54.06 MB / 0.7293 GB Notification: Performance of sort global known variables: time 1.444e-05/0.9902, allocations: 77.73 kB / 1.279 GB, free: 53.99 MB / 0.7293 GB Notification: Performance of remove unused functions: time 0.0007711/0.9909, allocations: 12.03 kB / 1.279 GB, free: 53.98 MB / 0.7293 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 2 (fac,n) * Number of discrete states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (2): * Single equations (assignments): 2 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.00014/0.9911, allocations: 105 kB / 1.279 GB, free: 53.87 MB / 0.7293 GB Notification: Performance of simCode: created initialization part: time 5.287e-05/0.9911, allocations: 8 kB / 1.279 GB, free: 53.86 MB / 0.7293 GB Notification: Performance of simCode: created event and clocks part: time 1.703e-06/0.9911, allocations: 3.688 kB / 1.279 GB, free: 53.86 MB / 0.7293 GB Notification: Performance of simCode: created simulation system equations: time 1.113e-05/0.9912, allocations: 4 kB / 1.279 GB, free: 53.86 MB / 0.7293 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 8.684e-05/0.9913, allocations: 2.25 kB / 1.279 GB, free: 53.86 MB / 0.7293 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.000154/0.9914, allocations: 58.06 kB / 1.28 GB, free: 53.78 MB / 0.7293 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001107/0.9915, allocations: 0.6842 MB / 1.28 GB, free: 53.07 MB / 0.7293 GB Notification: Performance of SimCode: time 2.61e-07/0.9915, allocations: 0 / 1.28 GB, free: 53.07 MB / 0.7293 GB (rm -f AixLib_latest_AixLib.Utilities.Math.Functions.Examples.Factorial.pipe ; mkfifo AixLib_latest_AixLib.Utilities.Math.Functions.Examples.Factorial.pipe ; head -c 1048576 < AixLib_latest_AixLib.Utilities.Math.Functions.Examples.Factorial.pipe >> ../files/AixLib_latest_AixLib.Utilities.Math.Functions.Examples.Factorial.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_AixLib_latest_AixLib_Utilities_Math_Functions_Examples_Factorial_fmu --startTime=0 --stopTime=12.9 --timeout=50 --tolerance=1e-06 AixLib_latest_AixLib_Utilities_Math_Functions_Examples_Factorial.fmu > AixLib_latest_AixLib.Utilities.Math.Functions.Examples.Factorial.pipe 2>&1)