Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_Buildings.Fluid.SolarCollectors.Validation.ExtremeAmbientConditions.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.Fluid.SolarCollectors.Validation.ExtremeAmbientConditions,fileNamePrefix="Buildings_8_Buildings_Fluid_SolarCollectors_Validation_ExtremeAmbientConditions",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.SolarCollectors.Validation.ExtremeAmbientConditions,fileNamePrefix="Buildings_8_Buildings_Fluid_SolarCollectors_Validation_ExtremeAmbientConditions",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 0.001316/0.001316, allocations: 109.4 kB / 15.69 MB, free: 128 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001388/0.001388, allocations: 187.7 kB / 16.62 MB, free: 6.582 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.449/1.449, allocations: 205.1 MB / 222.5 MB, free: 4.52 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 1.668/1.668, allocations: 292.3 MB / 0.549 GB, free: 12.74 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 0.001403/0.001403, allocations: 72.42 kB / 0.6718 GB, free: 26.14 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2526/0.254, allocations: 114.6 MB / 0.7836 GB, free: 13.25 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.SolarCollectors.Validation.ExtremeAmbientConditions): time 0.04554/0.2996, allocations: 49.4 MB / 0.8319 GB, free: 11.67 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.02274/0.3224, allocations: 18.15 MB / 0.8496 GB, free: 9.48 MB / 0.67 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004042/0.3266, allocations: 71.56 kB / 0.8497 GB, free: 9.41 MB / 0.67 GB Notification: Performance of NFTyping.typeComponents: time 0.003235/0.3298, allocations: 0.8687 MB / 0.8505 GB, free: 8.535 MB / 0.67 GB Notification: Performance of NFTyping.typeBindings: time 0.007227/0.3371, allocations: 2.335 MB / 0.8528 GB, free: 6.188 MB / 0.67 GB Notification: Performance of NFTyping.typeClassSections: time 0.004815/0.3419, allocations: 1.844 MB / 0.8546 GB, free: 4.352 MB / 0.67 GB Notification: Performance of NFFlatten.flatten: time 0.01109/0.353, allocations: 9.697 MB / 0.8641 GB, free: 10.62 MB / 0.6856 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00705/0.3601, allocations: 4.887 MB / 0.8688 GB, free: 5.652 MB / 0.6856 GB Notification: Performance of NFEvalConstants.evaluate: time 0.008747/0.3689, allocations: 3.494 MB / 0.8722 GB, free: 2.164 MB / 0.6856 GB Notification: Performance of NFSimplifyModel.simplify: time 0.005642/0.3746, allocations: 2.984 MB / 0.8752 GB, free: 15.17 MB / 0.7012 GB Notification: Performance of NFPackage.collectConstants: time 0.001395/0.376, allocations: 0.5039 MB / 0.8756 GB, free: 14.66 MB / 0.7012 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004664/0.3807, allocations: 1.592 MB / 0.8772 GB, free: 13.07 MB / 0.7012 GB Notification: Performance of NFScalarize.scalarize: time 0.001246/0.3819, allocations: 1.168 MB / 0.8783 GB, free: 11.9 MB / 0.7012 GB Notification: Performance of NFVerifyModel.verify: time 0.003772/0.3857, allocations: 2.376 MB / 0.8807 GB, free: 9.512 MB / 0.7012 GB Notification: Performance of NFConvertDAE.convert: time 0.008592/0.3943, allocations: 6.922 MB / 0.8874 GB, free: 2.57 MB / 0.7012 GB Notification: Performance of FrontEnd - DAE generated: time 6.072e-06/0.3944, allocations: 0 / 0.8874 GB, free: 2.57 MB / 0.7012 GB Notification: Performance of FrontEnd: time 1.874e-06/0.3944, allocations: 0 / 0.8874 GB, free: 2.57 MB / 0.7012 GB Notification: Performance of Transformations before backend: time 0.0002082/0.3946, allocations: 0 / 0.8874 GB, free: 2.57 MB / 0.7012 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 745 * Number of variables: 745 Notification: Performance of Generate backend data structure: time 0.0145/0.4091, allocations: 4.672 MB / 0.892 GB, free: 13.82 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 4.983e-05/0.4092, allocations: 12.03 kB / 0.892 GB, free: 13.81 MB / 0.7169 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0006377/0.4098, allocations: 413.2 kB / 0.8924 GB, free: 13.4 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01128/0.4211, allocations: 1.732 MB / 0.8941 GB, free: 11.66 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.007825/0.429, allocations: 3.52 MB / 0.8975 GB, free: 8.066 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001715/0.4292, allocations: 213.8 kB / 0.8977 GB, free: 7.855 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0009632/0.4302, allocations: 291.9 kB / 0.898 GB, free: 7.57 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01161/0.4418, allocations: 4.576 MB / 0.9025 GB, free: 2.863 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001107/0.4419, allocations: 7.938 kB / 0.9025 GB, free: 2.855 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000766/0.4427, allocations: 124 kB / 0.9026 GB, free: 2.734 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001487/0.4429, allocations: 133.6 kB / 0.9027 GB, free: 2.602 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01333/0.4562, allocations: 4.55 MB / 0.9072 GB, free: 14.04 MB / 0.7325 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.5057/0.962, allocations: 15.76 MB / 0.9226 GB, free: 124.7 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.007065/0.9691, allocations: 3.019 MB / 0.9255 GB, free: 124.3 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.003596/0.9727, allocations: 1.601 MB / 0.9271 GB, free: 124.1 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 0.00149/0.9742, allocations: 1.673 MB / 0.9287 GB, free: 122.4 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.621e-05/0.9743, allocations: 56.47 kB / 0.9288 GB, free: 122.3 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=168): time 3.737e-06/0.9743, allocations: 0 / 0.9288 GB, free: 122.3 MB / 0.7325 GB Notification: Performance of matching and sorting (n=168): time 0.01138/0.9857, allocations: 4.108 MB / 0.9328 GB, free: 121 MB / 0.7325 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.927e-05/0.9858, allocations: 122 kB / 0.9329 GB, free: 120.9 MB / 0.7325 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005101/0.9909, allocations: 3.239 MB / 0.936 GB, free: 119.8 MB / 0.7325 GB Notification: Performance of collectPreVariables (initialization): time 0.0003655/0.9913, allocations: 57.11 kB / 0.9361 GB, free: 119.7 MB / 0.7325 GB Notification: Performance of collectInitialEqns (initialization): time 0.001128/0.9924, allocations: 1.607 MB / 0.9377 GB, free: 118.7 MB / 0.7325 GB Notification: Performance of collectInitialBindings (initialization): time 0.0005909/0.993, allocations: 0.5764 MB / 0.9382 GB, free: 118.3 MB / 0.7325 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0009384/0.9939, allocations: 493.7 kB / 0.9387 GB, free: 118 MB / 0.7325 GB Notification: Performance of setup shared object (initialization): time 4.464e-05/0.994, allocations: 303 kB / 0.939 GB, free: 117.7 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004135/0.9981, allocations: 1.42 MB / 0.9404 GB, free: 117.3 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004794/1.003, allocations: 1.879 MB / 0.9422 GB, free: 116.3 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.008094/1.011, allocations: 3.221 MB / 0.9454 GB, free: 114.8 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.554e-05/1.011, allocations: 2.312 kB / 0.9454 GB, free: 114.8 MB / 0.7325 GB Notification: Performance of matching and sorting (n=274) (initialization): time 0.00954/1.021, allocations: 3.732 MB / 0.949 GB, free: 113.5 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 2.757e-05/1.021, allocations: 9.844 kB / 0.949 GB, free: 113.5 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.416e-05/1.021, allocations: 12.28 kB / 0.949 GB, free: 113.5 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.951e-05/1.021, allocations: 23.92 kB / 0.949 GB, free: 113.5 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003263/1.024, allocations: 0.6474 MB / 0.9497 GB, free: 113.4 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.107e-05/1.024, allocations: 29.39 kB / 0.9497 GB, free: 113.4 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003707/1.028, allocations: 436.7 kB / 0.9501 GB, free: 113.2 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002539/1.028, allocations: 110.6 kB / 0.9502 GB, free: 113.2 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00496/1.033, allocations: 2.347 MB / 0.9525 GB, free: 112.3 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.00372/1.037, allocations: 1.876 MB / 0.9544 GB, free: 111.3 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.006836/1.044, allocations: 3.21 MB / 0.9575 GB, free: 109.7 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.173e-05/1.044, allocations: 3.969 kB / 0.9575 GB, free: 109.7 MB / 0.7325 GB Notification: Performance of matching and sorting (n=274) (initialization_lambda0): time 0.00842/1.052, allocations: 3.72 MB / 0.9611 GB, free: 108 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 1.877e-05/1.052, allocations: 11.88 kB / 0.9611 GB, free: 108 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.298e-05/1.052, allocations: 7.938 kB / 0.9611 GB, free: 108 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.688e-05/1.052, allocations: 24.28 kB / 0.9612 GB, free: 108 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002994/1.055, allocations: 0.6478 MB / 0.9618 GB, free: 107.8 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.572e-05/1.055, allocations: 34.3 kB / 0.9618 GB, free: 107.8 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003674/1.059, allocations: 351.8 kB / 0.9622 GB, free: 107.6 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002213/1.059, allocations: 115 kB / 0.9623 GB, free: 107.6 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 51 * 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 (274): * Single equations (assignments): 274 * 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 0.0006613/1.06, allocations: 311.1 kB / 0.9626 GB, free: 107.3 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006479/1.06, allocations: 314.2 kB / 0.9629 GB, free: 107.1 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.008364/1.069, allocations: 3.611 MB / 0.9664 GB, free: 105 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.364e-05/1.069, allocations: 15.59 kB / 0.9664 GB, free: 105 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.14e-05/1.069, allocations: 0 / 0.9664 GB, free: 105 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.005946/1.075, allocations: 2.746 MB / 0.9691 GB, free: 103.5 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01428/1.089, allocations: 8.17 MB / 0.9771 GB, free: 96.48 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.091e-05/1.089, allocations: 4 kB / 0.9771 GB, free: 96.48 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002526/1.092, allocations: 471.9 kB / 0.9775 GB, free: 96.02 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.235e-05/1.092, allocations: 16 kB / 0.9775 GB, free: 96 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000148/1.092, allocations: 55.95 kB / 0.9776 GB, free: 95.95 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.088e-05/1.092, allocations: 15.92 kB / 0.9776 GB, free: 95.93 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.691e-06/1.092, allocations: 10.86 kB / 0.9776 GB, free: 95.93 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01036/1.102, allocations: 4.76 MB / 0.9823 GB, free: 91.09 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001788/1.104, allocations: 0.7661 MB / 0.983 GB, free: 90.3 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007262/1.105, allocations: 53.64 kB / 0.9831 GB, free: 90.25 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00386/1.109, allocations: 216.4 kB / 0.9833 GB, free: 90.04 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001983/1.109, allocations: 113 kB / 0.9834 GB, free: 89.93 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.00019/1.109, allocations: 89.66 kB / 0.9835 GB, free: 89.84 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.00312/1.112, allocations: 2.47 MB / 0.9859 GB, free: 87.38 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.5e-07/1.112, allocations: 0 / 0.9859 GB, free: 87.38 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.003776/1.116, allocations: 1.711 MB / 0.9876 GB, free: 85.69 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 21 * Number of states: 6 (solAsh.vol[1].dynBal.U,solAsh.vol[2].dynBal.U,solAsh.vol[3].dynBal.U,solEn.vol[1].dynBal.U,solEn.vol[2].dynBal.U,solEn.vol[3].dynBal.U) * 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 (167): * Single equations (assignments): 164 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * When equations: 0 * 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 0.01055/1.127, allocations: 5.707 MB / 0.9931 GB, free: 79.97 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.01142/1.138, allocations: 4.952 MB / 0.998 GB, free: 75.03 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 1.694e-05/1.138, allocations: 10.06 kB / 0.998 GB, free: 75.02 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.003114/1.141, allocations: 1.406 MB / 0.9993 GB, free: 73.61 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01161/1.153, allocations: 1.697 MB / 1.001 GB, free: 72.01 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.05308/1.206, allocations: 28.96 MB / 1.029 GB, free: 42.39 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001422/1.207, allocations: 2.44 MB / 1.032 GB, free: 39.92 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.004704/1.212, allocations: 1.407 MB / 1.033 GB, free: 38.56 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001901/1.214, allocations: 1.448 MB / 1.034 GB, free: 37.11 MB / 0.7325 GB Notification: Performance of SimCode: time 1.032e-06/1.214, allocations: 4 kB / 1.034 GB, free: 37.11 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1451/1.359, allocations: 91.63 MB / 1.124 GB, free: 10.33 MB / 0.795 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.43/14.79, allocations: 11.12 kB / 1.124 GB, free: 10.32 MB / 0.795 GB (rm -f Buildings_8_Buildings.Fluid.SolarCollectors.Validation.ExtremeAmbientConditions.pipe ; mkfifo Buildings_8_Buildings.Fluid.SolarCollectors.Validation.ExtremeAmbientConditions.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.SolarCollectors.Validation.ExtremeAmbientConditions.pipe >> ../files/Buildings_8_Buildings.Fluid.SolarCollectors.Validation.ExtremeAmbientConditions.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_Buildings_8_Buildings_Fluid_SolarCollectors_Validation_ExtremeAmbientConditions_fmu --startTime=0 --stopTime=86400 --timeout=50 --tolerance=1e-06 Buildings_8_Buildings_Fluid_SolarCollectors_Validation_ExtremeAmbientConditions.fmu > Buildings_8_Buildings.Fluid.SolarCollectors.Validation.ExtremeAmbientConditions.pipe 2>&1)