Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_Buildings.Electrical.DC.Loads.Examples.LinearizedLoad.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.Electrical.DC.Loads.Examples.LinearizedLoad,fileNamePrefix="Buildings_8_Buildings_Electrical_DC_Loads_Examples_LinearizedLoad",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Electrical.DC.Loads.Examples.LinearizedLoad,fileNamePrefix="Buildings_8_Buildings_Electrical_DC_Loads_Examples_LinearizedLoad",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 0.001518/0.001518, 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 0.001928/0.001929, allocations: 193.8 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 1.56/1.56, allocations: 205.1 MB / 222.4 MB, free: 4.605 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 1.726/1.726, 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 0.001987/0.001987, allocations: 71.92 kB / 0.6716 GB, free: 26.25 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2632/0.2652, allocations: 114.5 MB / 0.7835 GB, free: 13.38 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.DC.Loads.Examples.LinearizedLoad): time 0.007015/0.2723, allocations: 4.068 MB / 0.7874 GB, free: 9.285 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.002934/0.2753, allocations: 1.59 MB / 0.789 GB, free: 7.684 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0002431/0.2755, allocations: 11.94 kB / 0.789 GB, free: 7.672 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.001652/0.2772, allocations: 0.5759 MB / 0.7896 GB, free: 7.094 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 0.000607/0.2779, allocations: 238.9 kB / 0.7898 GB, free: 6.859 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.0006195/0.2785, allocations: 218.9 kB / 0.79 GB, free: 6.648 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.0005913/0.2791, allocations: 0.5374 MB / 0.7905 GB, free: 6.109 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007739/0.2799, allocations: 478 kB / 0.791 GB, free: 5.645 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000272/0.2802, allocations: 227.3 kB / 0.7912 GB, free: 5.422 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0004268/0.2806, allocations: 247.1 kB / 0.7914 GB, free: 5.18 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 6.082e-05/0.2807, allocations: 36 kB / 0.7915 GB, free: 5.145 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0003126/0.281, allocations: 163.7 kB / 0.7916 GB, free: 4.984 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.0001531/0.2812, allocations: 155.6 kB / 0.7918 GB, free: 4.832 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0001909/0.2814, allocations: 195 kB / 0.792 GB, free: 4.641 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.0005592/0.2819, allocations: 0.518 MB / 0.7925 GB, free: 4.121 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 4.027e-06/0.2819, allocations: 0 / 0.7925 GB, free: 4.121 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.412e-06/0.2819, allocations: 0 / 0.7925 GB, free: 4.121 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 7.163e-06/0.282, allocations: 0 / 0.7925 GB, free: 4.121 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: 90 * Number of variables: 90 Notification: Performance of Generate backend data structure: time 0.001199/0.2832, allocations: 0.6864 MB / 0.7931 GB, free: 3.387 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 4.053e-05/0.2832, allocations: 8.031 kB / 0.7931 GB, free: 3.379 MB / 0.6075 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 8.634e-05/0.2833, allocations: 74.7 kB / 0.7932 GB, free: 3.297 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007202/0.284, allocations: 112.4 kB / 0.7933 GB, free: 3.188 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004057/0.2844, allocations: 291.7 kB / 0.7936 GB, free: 2.863 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.66e-05/0.2845, allocations: 55.27 kB / 0.7937 GB, free: 2.805 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 5.509e-05/0.2846, allocations: 40.3 kB / 0.7937 GB, free: 2.766 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008113/0.2854, allocations: 0.5007 MB / 0.7942 GB, free: 2.238 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.478e-05/0.2854, allocations: 0 / 0.7942 GB, free: 2.238 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.426e-05/0.2855, allocations: 19.98 kB / 0.7942 GB, free: 2.219 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.035e-05/0.2856, allocations: 28.98 kB / 0.7942 GB, free: 2.191 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006939/0.2863, allocations: 379.7 kB / 0.7946 GB, free: 1.816 MB / 0.6075 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002523/0.2888, allocations: 2.231 MB / 0.7968 GB, free: 15.35 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0006845/0.2895, allocations: 262.6 kB / 0.797 GB, free: 15.09 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003673/0.2899, allocations: 152.8 kB / 0.7972 GB, free: 14.93 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 3.013e-05/0.2899, allocations: 4 kB / 0.7972 GB, free: 14.93 MB / 0.6231 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.913e-05/0.2899, allocations: 34.56 kB / 0.7972 GB, free: 14.89 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=19): time 1.823e-06/0.29, allocations: 0 / 0.7972 GB, free: 14.89 MB / 0.6231 GB Notification: Performance of matching and sorting (n=19): time 0.001557/0.2915, allocations: 0.5777 MB / 0.7978 GB, free: 14.26 MB / 0.6231 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.105e-05/0.2916, allocations: 51.41 kB / 0.7978 GB, free: 14.2 MB / 0.6231 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002392/0.2918, allocations: 225 kB / 0.798 GB, free: 13.97 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 3.224e-05/0.2919, allocations: 29.7 kB / 0.7981 GB, free: 13.93 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001386/0.292, allocations: 211.6 kB / 0.7983 GB, free: 13.72 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 5.021e-05/0.2921, allocations: 63.09 kB / 0.7983 GB, free: 13.66 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 9.162e-05/0.2922, allocations: 53.61 kB / 0.7984 GB, free: 13.6 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.0001321/0.2923, allocations: 338.8 kB / 0.7987 GB, free: 13.26 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002232/0.2925, allocations: 96.8 kB / 0.7988 GB, free: 13.16 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002761/0.2928, allocations: 183 kB / 0.799 GB, free: 12.94 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004605/0.2933, allocations: 265.2 kB / 0.7992 GB, free: 12.65 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.304e-06/0.2933, allocations: 7.938 kB / 0.7992 GB, free: 12.64 MB / 0.6231 GB Notification: Performance of matching and sorting (n=30) (initialization): time 0.0009057/0.2942, allocations: 373.1 kB / 0.7996 GB, free: 12.27 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 2.801e-05/0.2943, allocations: 12.25 kB / 0.7996 GB, free: 12.25 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.258e-05/0.2943, allocations: 11.94 kB / 0.7996 GB, free: 12.24 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005782/0.2949, allocations: 109.6 kB / 0.7997 GB, free: 12.13 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002243/0.2951, allocations: 51.86 kB / 0.7998 GB, free: 12.08 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003485/0.2986, allocations: 3.044 MB / 0.8027 GB, free: 8.758 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002685/0.2989, allocations: 39.77 kB / 0.8028 GB, free: 8.719 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.104e-05/0.2989, allocations: 8 kB / 0.8028 GB, free: 8.711 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0003403/0.2993, allocations: 228 kB / 0.803 GB, free: 8.484 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.000261/0.2995, allocations: 175.1 kB / 0.8032 GB, free: 8.273 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0004482/0.3, allocations: 268.2 kB / 0.8034 GB, free: 7.98 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.845e-06/0.3, allocations: 0 / 0.8034 GB, free: 7.98 MB / 0.6231 GB Notification: Performance of matching and sorting (n=30) (initialization_lambda0): time 0.0007786/0.3008, allocations: 353.7 kB / 0.8038 GB, free: 7.625 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.198e-05/0.3008, allocations: 11.94 kB / 0.8038 GB, free: 7.613 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.262e-06/0.3008, allocations: 4.312 kB / 0.8038 GB, free: 7.609 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002999/0.3011, allocations: 76.78 kB / 0.8038 GB, free: 7.531 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002241/0.3014, allocations: 63.89 kB / 0.8039 GB, free: 7.469 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002008/0.3034, allocations: 1.609 MB / 0.8055 GB, free: 5.719 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002795/0.3037, allocations: 31.77 kB / 0.8055 GB, free: 5.688 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.061e-05/0.3037, allocations: 15.98 kB / 0.8055 GB, free: 5.672 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 11 * 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 (27): * Single equations (assignments): 25 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(1,1), (1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.0001532/0.3039, allocations: 192.2 kB / 0.8057 GB, free: 5.477 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.209e-05/0.3039, allocations: 19.81 kB / 0.8057 GB, free: 5.457 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 5.802e-05/0.304, allocations: 26.19 kB / 0.8057 GB, free: 5.434 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.928e-06/0.304, allocations: 7.984 kB / 0.8058 GB, free: 5.426 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.127e-06/0.304, allocations: 3.938 kB / 0.8058 GB, free: 5.422 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.827e-06/0.304, allocations: 0 / 0.8058 GB, free: 5.422 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001383/0.3054, allocations: 0.8287 MB / 0.8066 GB, free: 4.512 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.825e-06/0.3054, allocations: 0 / 0.8066 GB, free: 4.512 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001433/0.3056, allocations: 31.98 kB / 0.8066 GB, free: 4.48 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003863/0.306, allocations: 105.8 kB / 0.8067 GB, free: 4.371 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.779e-05/0.306, allocations: 0 / 0.8067 GB, free: 4.371 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003087/0.3091, allocations: 3.031 MB / 0.8097 GB, free: 1.059 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.3e-06/0.3091, allocations: 3.984 kB / 0.8097 GB, free: 1.055 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0008681/0.31, allocations: 422.5 kB / 0.8101 GB, free: 0.6133 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001593/0.3102, allocations: 116.7 kB / 0.8102 GB, free: 492 kB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.988e-05/0.3102, allocations: 8 kB / 0.8102 GB, free: 484 kB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001801/0.3104, allocations: 15.92 kB / 0.8102 GB, free: 468 kB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.962e-05/0.3105, allocations: 23.91 kB / 0.8102 GB, free: 444 kB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.679e-05/0.3106, allocations: 8 kB / 0.8102 GB, free: 436 kB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0001857/0.3107, allocations: 164.5 kB / 0.8104 GB, free: 276 kB / 0.6231 GB Notification: Performance of sort global known variables: time 2.4e-07/0.3108, allocations: 0 / 0.8104 GB, free: 276 kB / 0.6231 GB Notification: Performance of remove unused functions: time 0.0007792/0.3115, allocations: 167.4 kB / 0.8105 GB, free: 108 kB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * 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 simulation (17): * Single equations (assignments): 15 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(1,1), (1,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001122/0.3127, allocations: 0.9489 MB / 0.8115 GB, free: 15.12 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.001985/0.3147, allocations: 0.7699 MB / 0.8122 GB, free: 14.31 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 4.117e-06/0.3147, allocations: 0 / 0.8122 GB, free: 14.31 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.0008144/0.3155, allocations: 372.7 kB / 0.8126 GB, free: 13.93 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005022/0.316, allocations: 66.88 kB / 0.8126 GB, free: 13.86 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004226/0.3203, allocations: 2.845 MB / 0.8154 GB, free: 10.86 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004058/0.3207, allocations: 0.8145 MB / 0.8162 GB, free: 10.02 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.0002172/0.3209, allocations: 50.25 kB / 0.8163 GB, free: 9.965 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001274/0.3211, allocations: 99.39 kB / 0.8164 GB, free: 9.867 MB / 0.6387 GB Notification: Performance of SimCode: time 1.092e-06/0.3211, allocations: 0 / 0.8164 GB, free: 9.867 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03061/0.3517, allocations: 7.212 MB / 0.8234 GB, free: 2.805 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.11/11.47, allocations: 19.72 kB / 0.8234 GB, free: 2.789 MB / 0.6387 GB (rm -f Buildings_8_Buildings.Electrical.DC.Loads.Examples.LinearizedLoad.pipe ; mkfifo Buildings_8_Buildings.Electrical.DC.Loads.Examples.LinearizedLoad.pipe ; head -c 1048576 < Buildings_8_Buildings.Electrical.DC.Loads.Examples.LinearizedLoad.pipe >> ../files/Buildings_8_Buildings.Electrical.DC.Loads.Examples.LinearizedLoad.sim & python3 -m fmpy simulate --output-file Buildings_8_Buildings.Electrical.DC.Loads.Examples.LinearizedLoad_res.csv --start-time 0 --stop-time 1 --timeout 50 --relative-tolerance 1e-06 Buildings_8_Buildings_Electrical_DC_Loads_Examples_LinearizedLoad.fmu > Buildings_8_Buildings.Electrical.DC.Loads.Examples.LinearizedLoad.pipe 2>&1)