Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Electrical.AC.ThreePhasesBalanced.Sources.Examples.VariablePowerSource.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.AC.ThreePhasesBalanced.Sources.Examples.VariablePowerSource,fileNamePrefix="Buildings_8_Buildings_Electrical_AC_ThreePhasesBalanced_Sources_Examples_VariablePowerSource",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesBalanced.Sources.Examples.VariablePowerSource,fileNamePrefix="Buildings_8_Buildings_Electrical_AC_ThreePhasesBalanced_Sources_Examples_VariablePowerSource",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 0.0008761/0.0008763, allocations: 91.84 kB / 15.36 MB, free: 0.7383 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.005428/0.005428, allocations: 169.9 kB / 16.26 MB, free: 6.613 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.207/1.207, allocations: 205.4 MB / 222.4 MB, free: 5.566 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 1.521/1.521, allocations: 292.7 MB / 0.5502 GB, free: 14.46 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 0.0004765/0.0004765, allocations: 18.77 kB / 0.6744 GB, free: 25.87 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1983/0.1988, allocations: 116.3 MB / 0.788 GB, free: 11.48 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesBalanced.Sources.Examples.VariablePowerSource): time 0.003571/0.2024, allocations: 3.237 MB / 0.7912 GB, free: 8.223 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.002356/0.2048, allocations: 1.758 MB / 0.7929 GB, free: 6.453 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 8.995e-05/0.2049, allocations: 0 / 0.7929 GB, free: 6.453 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.0001482/0.205, allocations: 35.7 kB / 0.7929 GB, free: 6.418 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 0.0004087/0.2054, allocations: 175.2 kB / 0.7931 GB, free: 6.246 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.0004663/0.2059, allocations: 239.1 kB / 0.7933 GB, free: 6.016 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.0004223/0.2064, allocations: 0.4985 MB / 0.7938 GB, free: 5.516 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.000661/0.207, allocations: 410.7 kB / 0.7942 GB, free: 5.098 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0001728/0.2072, allocations: 131.5 kB / 0.7943 GB, free: 4.969 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0002502/0.2075, allocations: 175.3 kB / 0.7945 GB, free: 4.797 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 3.082e-05/0.2075, allocations: 19.98 kB / 0.7945 GB, free: 4.777 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0003794/0.2079, allocations: 303.4 kB / 0.7948 GB, free: 4.48 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 8.36e-05/0.208, allocations: 79.78 kB / 0.7949 GB, free: 4.402 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0001277/0.2081, allocations: 157 kB / 0.795 GB, free: 4.242 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.0004286/0.2086, allocations: 462.4 kB / 0.7955 GB, free: 3.789 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 3.336e-06/0.2086, allocations: 0 / 0.7955 GB, free: 3.789 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.112e-06/0.2086, allocations: 0 / 0.7955 GB, free: 3.789 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 4.619e-06/0.2086, allocations: 4 kB / 0.7955 GB, free: 3.785 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: 57 * Number of variables: 57 Notification: Performance of Generate backend data structure: time 0.0009865/0.2096, allocations: 0.5981 MB / 0.796 GB, free: 3.129 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 3.495e-05/0.2096, allocations: 12.03 kB / 0.7961 GB, free: 3.117 MB / 0.6075 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 6.122e-05/0.2097, allocations: 58.73 kB / 0.7961 GB, free: 3.051 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0006474/0.2103, allocations: 96.45 kB / 0.7962 GB, free: 2.957 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0002959/0.2106, allocations: 287.4 kB / 0.7965 GB, free: 2.637 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.815e-05/0.2107, allocations: 16.81 kB / 0.7965 GB, free: 2.621 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 5.79e-05/0.2107, allocations: 24.34 kB / 0.7965 GB, free: 2.598 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007581/0.2115, allocations: 430.7 kB / 0.7969 GB, free: 2.148 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.279e-05/0.2115, allocations: 0 / 0.7969 GB, free: 2.148 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.357e-05/0.2116, allocations: 20 kB / 0.7969 GB, free: 2.129 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.19e-05/0.2116, allocations: 24.36 kB / 0.797 GB, free: 2.102 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008708/0.2125, allocations: 420.7 kB / 0.7974 GB, free: 1.691 MB / 0.6075 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001616/0.2141, allocations: 1.615 MB / 0.7989 GB, free: 15.95 MB / 0.6231 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00111/0.2152, allocations: 484 kB / 0.7994 GB, free: 15.46 MB / 0.6231 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004288/0.2157, allocations: 209.6 kB / 0.7996 GB, free: 15.25 MB / 0.6231 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001252/0.2158, allocations: 93.08 kB / 0.7997 GB, free: 15.14 MB / 0.6231 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005258/0.2163, allocations: 278.5 kB / 0.8 GB, free: 14.85 MB / 0.6231 GB Notification: Performance of pre-optimization done (n=27): time 2.705e-06/0.2164, allocations: 0 / 0.8 GB, free: 14.85 MB / 0.6231 GB Notification: Performance of matching and sorting (n=28): time 0.001819/0.2182, allocations: 0.7857 MB / 0.8007 GB, free: 14.04 MB / 0.6231 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.95e-05/0.2182, allocations: 85.09 kB / 0.8008 GB, free: 13.94 MB / 0.6231 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001914/0.2184, allocations: 221 kB / 0.801 GB, free: 13.71 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 3.43e-05/0.2185, allocations: 41.69 kB / 0.8011 GB, free: 13.66 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 9.49e-05/0.2186, allocations: 164.3 kB / 0.8012 GB, free: 13.5 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 6.901e-05/0.2187, allocations: 90.73 kB / 0.8013 GB, free: 13.41 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.345e-05/0.2187, allocations: 33.7 kB / 0.8013 GB, free: 13.37 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.0001036/0.2188, allocations: 338.8 kB / 0.8017 GB, free: 13.03 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000406/0.2192, allocations: 184.2 kB / 0.8018 GB, free: 12.85 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004331/0.2197, allocations: 257.3 kB / 0.8021 GB, free: 12.57 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008511/0.2205, allocations: 479.4 kB / 0.8025 GB, free: 12.07 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.673e-06/0.2206, allocations: 4 kB / 0.8025 GB, free: 12.06 MB / 0.6231 GB Notification: Performance of matching and sorting (n=39) (initialization): time 0.001128/0.2217, allocations: 0.5668 MB / 0.8031 GB, free: 11.48 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 9.927e-05/0.2218, allocations: 182.6 kB / 0.8033 GB, free: 11.26 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.751e-06/0.2218, allocations: 0 / 0.8033 GB, free: 11.26 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002065/0.222, allocations: 44.81 kB / 0.8033 GB, free: 11.21 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003882/0.2224, allocations: 87.91 kB / 0.8034 GB, free: 11.13 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001229/0.2237, allocations: 1.505 MB / 0.8049 GB, free: 9.488 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003236/0.224, allocations: 55.86 kB / 0.8049 GB, free: 9.434 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.92e-05/0.224, allocations: 11.98 kB / 0.8049 GB, free: 9.422 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 7.103e-06/0.224, allocations: 6.812 kB / 0.8049 GB, free: 9.418 MB / 0.6231 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001049/0.2251, allocations: 0.4982 MB / 0.8054 GB, free: 8.91 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.809e-06/0.2251, allocations: 4 kB / 0.8054 GB, free: 8.906 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001205/0.2252, allocations: 40.77 kB / 0.8055 GB, free: 8.863 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003636/0.2256, allocations: 87.86 kB / 0.8055 GB, free: 8.777 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001068/0.2267, allocations: 1.489 MB / 0.807 GB, free: 7.148 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002947/0.227, allocations: 51.78 kB / 0.8071 GB, free: 7.098 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.84e-05/0.227, allocations: 27.86 kB / 0.8071 GB, free: 7.07 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 10 * Number of states: 0 () * Number of discrete variables: 5 (load.count,$PRE.load.count,load.T_start,$PRE.load.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (36): * Single equations (assignments): 34 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0002016/0.2272, allocations: 233 kB / 0.8073 GB, free: 6.832 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.704e-05/0.2273, allocations: 23.72 kB / 0.8073 GB, free: 6.809 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001056/0.2284, allocations: 488.7 kB / 0.8078 GB, free: 6.324 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.729e-06/0.2284, allocations: 4 kB / 0.8078 GB, free: 6.32 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.739e-06/0.2284, allocations: 0 / 0.8078 GB, free: 6.32 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.412e-06/0.2284, allocations: 7.922 kB / 0.8078 GB, free: 6.312 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0005855/0.229, allocations: 0.57 MB / 0.8084 GB, free: 5.68 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.114e-06/0.229, allocations: 0 / 0.8084 GB, free: 5.68 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003821/0.2294, allocations: 83.86 kB / 0.8084 GB, free: 5.598 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001103/0.2295, allocations: 32.83 kB / 0.8085 GB, free: 5.562 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.887e-05/0.2295, allocations: 11.98 kB / 0.8085 GB, free: 5.551 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0009742/0.2305, allocations: 1.421 MB / 0.8099 GB, free: 3.992 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.492e-06/0.2305, allocations: 0 / 0.8099 GB, free: 3.992 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.000971/0.2315, allocations: 0.5693 MB / 0.8104 GB, free: 3.395 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001228/0.2317, allocations: 132.6 kB / 0.8105 GB, free: 3.246 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.072e-05/0.2317, allocations: 12 kB / 0.8106 GB, free: 3.234 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003108/0.232, allocations: 43.89 kB / 0.8106 GB, free: 3.191 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.036e-05/0.2321, allocations: 31.95 kB / 0.8106 GB, free: 3.16 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.343e-05/0.2321, allocations: 8 kB / 0.8106 GB, free: 3.152 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0001519/0.2323, allocations: 176.4 kB / 0.8108 GB, free: 2.977 MB / 0.6231 GB Notification: Performance of sort global known variables: time 9e-08/0.2323, allocations: 0 / 0.8108 GB, free: 2.977 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.0005495/0.2329, allocations: 136 kB / 0.8109 GB, free: 2.844 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,load.T_start,load.count) * Number of discrete states: 1 (load.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (28): * Single equations (assignments): 25 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001275/0.2341, allocations: 1.114 MB / 0.812 GB, free: 1.688 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.001756/0.2359, allocations: 1.006 MB / 0.813 GB, free: 0.6328 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 2.896e-06/0.2359, allocations: 0 / 0.813 GB, free: 0.6328 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0005922/0.2365, allocations: 342.9 kB / 0.8133 GB, free: 292 kB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004535/0.237, allocations: 55.45 kB / 0.8134 GB, free: 240 kB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004684/0.2417, allocations: 3.515 MB / 0.8168 GB, free: 12.55 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002991/0.242, allocations: 0.7839 MB / 0.8176 GB, free: 11.74 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.0002818/0.2423, allocations: 98.19 kB / 0.8177 GB, free: 11.64 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001601/0.2425, allocations: 83.41 kB / 0.8178 GB, free: 11.56 MB / 0.6387 GB Notification: Performance of SimCode: time 6.11e-07/0.2425, allocations: 4 kB / 0.8178 GB, free: 11.56 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 3.289/3.531, allocations: 6.573 MB / 0.8242 GB, free: 5.215 MB / 0.6387 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0003272/3.532, allocations: 255.6 kB / 0.8244 GB, free: 4.965 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.554/6.086, allocations: 4 kB / 0.8244 GB, free: 4.961 MB / 0.6387 GB (rm -f Buildings_8_Buildings.Electrical.AC.ThreePhasesBalanced.Sources.Examples.VariablePowerSource.pipe ; mkfifo Buildings_8_Buildings.Electrical.AC.ThreePhasesBalanced.Sources.Examples.VariablePowerSource.pipe ; head -c 1048576 < Buildings_8_Buildings.Electrical.AC.ThreePhasesBalanced.Sources.Examples.VariablePowerSource.pipe >> ../files/Buildings_8_Buildings.Electrical.AC.ThreePhasesBalanced.Sources.Examples.VariablePowerSource.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_Buildings_8_Buildings_Electrical_AC_ThreePhasesBalanced_Sources_Examples_VariablePowerSource_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 Buildings_8_Buildings_Electrical_AC_ThreePhasesBalanced_Sources_Examples_VariablePowerSource.fmu > Buildings_8_Buildings.Electrical.AC.ThreePhasesBalanced.Sources.Examples.VariablePowerSource.pipe 2>&1)