Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8.0.0_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTemperature.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 8.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTemperature,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_CHPs_BaseClasses_Validation_WarmUpTemperature",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTemperature,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_CHPs_BaseClasses_Validation_WarmUpTemperature",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo): time 2.774/2.774, allocations: 287.5 MB / 302.4 MB, free: 8.387 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001536/0.001536, allocations: 180.5 kB / 371 MB, free: 10.86 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.253/2.253, allocations: 205.4 MB / 0.6297 GB, free: 10.59 MB / 458.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0009409/0.0009401, allocations: 102.4 kB / 0.743 GB, free: 6.578 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0006218/0.0006223, allocations: 11.53 kB / 0.8659 GB, free: 141.2 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2419/0.2425, allocations: 115.3 MB / 0.9785 GB, free: 28.26 MB / 0.6198 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTemperature): time 0.004318/0.2469, allocations: 2.698 MB / 0.9811 GB, free: 25.54 MB / 0.6198 GB Notification: Performance of NFInst.instExpressions: time 0.00378/0.2508, allocations: 1.635 MB / 0.9827 GB, free: 23.89 MB / 0.6198 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006409/0.2515, allocations: 11.94 kB / 0.9827 GB, free: 23.88 MB / 0.6198 GB Notification: Performance of NFTyping.typeComponents: time 0.001342/0.2528, allocations: 267.6 kB / 0.983 GB, free: 23.62 MB / 0.6198 GB Notification: Performance of NFTyping.typeBindings: time 0.0008231/0.2537, allocations: 159.2 kB / 0.9831 GB, free: 23.46 MB / 0.6198 GB Notification: Performance of NFTyping.typeClassSections: time 0.001395/0.2551, allocations: 290.9 kB / 0.9834 GB, free: 23.18 MB / 0.6198 GB Notification: Performance of NFFlatten.flatten: time 0.001472/0.2566, allocations: 0.7144 MB / 0.9841 GB, free: 22.47 MB / 0.6198 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0009334/0.2576, allocations: 430.4 kB / 0.9845 GB, free: 22.04 MB / 0.6198 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0004041/0.258, allocations: 234.9 kB / 0.9847 GB, free: 21.81 MB / 0.6198 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0003526/0.2584, allocations: 242.7 kB / 0.9849 GB, free: 21.57 MB / 0.6198 GB Notification: Performance of NFPackage.collectConstants: time 0.0001031/0.2585, allocations: 24 kB / 0.985 GB, free: 21.55 MB / 0.6198 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0003241/0.2588, allocations: 75.89 kB / 0.985 GB, free: 21.48 MB / 0.6198 GB Notification: Performance of NFScalarize.scalarize: time 0.0001873/0.259, allocations: 151.4 kB / 0.9852 GB, free: 21.33 MB / 0.6198 GB Notification: Performance of NFVerifyModel.verify: time 0.0001744/0.2592, allocations: 149.2 kB / 0.9853 GB, free: 21.18 MB / 0.6198 GB Notification: Performance of NFConvertDAE.convert: time 0.0008855/0.2601, allocations: 0.6079 MB / 0.9859 GB, free: 20.57 MB / 0.6198 GB Notification: Performance of FrontEnd - DAE generated: time 7.885e-06/0.2602, allocations: 4 kB / 0.9859 GB, free: 20.56 MB / 0.6198 GB Notification: Performance of FrontEnd: time 3.036e-06/0.2602, allocations: 0 / 0.9859 GB, free: 20.56 MB / 0.6198 GB Notification: Performance of Transformations before backend: time 1.509e-05/0.2602, allocations: 0 / 0.9859 GB, free: 20.56 MB / 0.6198 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 143 * Number of variables: 143 Notification: Performance of Generate backend data structure: time 0.00209/0.2623, allocations: 0.958 MB / 0.9869 GB, free: 19.55 MB / 0.6198 GB Notification: Performance of prepare preOptimizeDAE: time 5.698e-05/0.2624, allocations: 12.02 kB / 0.9869 GB, free: 19.54 MB / 0.6198 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001994/0.2626, allocations: 102.5 kB / 0.987 GB, free: 19.43 MB / 0.6198 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001974/0.2628, allocations: 94.83 kB / 0.9871 GB, free: 19.33 MB / 0.6198 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001175/0.264, allocations: 0.5036 MB / 0.9875 GB, free: 18.79 MB / 0.6198 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001138/0.2641, allocations: 79.02 kB / 0.9876 GB, free: 18.7 MB / 0.6198 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001129/0.2643, allocations: 63.98 kB / 0.9877 GB, free: 18.64 MB / 0.6198 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001394/0.2657, allocations: 0.6521 MB / 0.9883 GB, free: 17.93 MB / 0.6198 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.209e-05/0.2658, allocations: 7.953 kB / 0.9883 GB, free: 17.92 MB / 0.6198 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.266e-05/0.2658, allocations: 20 kB / 0.9883 GB, free: 17.9 MB / 0.6198 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.83e-05/0.2659, allocations: 19.94 kB / 0.9884 GB, free: 17.88 MB / 0.6198 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001091/0.267, allocations: 411.5 kB / 0.9888 GB, free: 17.48 MB / 0.6198 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.003701/0.2707, allocations: 2.701 MB / 0.9914 GB, free: 14.67 MB / 0.6198 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0008906/0.2717, allocations: 255.1 kB / 0.9916 GB, free: 14.41 MB / 0.6198 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003672/0.2721, allocations: 140.8 kB / 0.9918 GB, free: 14.27 MB / 0.6198 GB Notification: Performance of preOpt evalFunc (simulation): time 5.692e-05/0.2721, allocations: 19.72 kB / 0.9918 GB, free: 14.25 MB / 0.6198 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005237/0.2727, allocations: 187 kB / 0.992 GB, free: 14.05 MB / 0.6198 GB Notification: Performance of pre-optimization done (n=38): time 4.218e-06/0.2727, allocations: 4 kB / 0.992 GB, free: 14.05 MB / 0.6198 GB Notification: Performance of matching and sorting (n=38): time 0.001283/0.274, allocations: 421.1 kB / 0.9924 GB, free: 13.63 MB / 0.6198 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.425e-05/0.2741, allocations: 89.05 kB / 0.9925 GB, free: 13.53 MB / 0.6198 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009956/0.2751, allocations: 0.6561 MB / 0.9931 GB, free: 12.86 MB / 0.6198 GB Notification: Performance of collectPreVariables (initialization): time 0.0001129/0.2752, allocations: 49.7 kB / 0.9932 GB, free: 12.81 MB / 0.6198 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003844/0.2756, allocations: 400.1 kB / 0.9935 GB, free: 12.41 MB / 0.6198 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001303/0.2758, allocations: 94.83 kB / 0.9936 GB, free: 12.32 MB / 0.6198 GB Notification: Performance of simplifyInitialFunctions (initialization): time 3.536e-05/0.2758, allocations: 12 kB / 0.9936 GB, free: 12.3 MB / 0.6198 GB Notification: Performance of setup shared object (initialization): time 0.0001277/0.276, allocations: 382.8 kB / 0.994 GB, free: 11.92 MB / 0.6198 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004456/0.2764, allocations: 137.2 kB / 0.9941 GB, free: 11.79 MB / 0.6198 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005337/0.277, allocations: 361 kB / 0.9945 GB, free: 11.34 MB / 0.6198 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004502/0.2774, allocations: 151.9 kB / 0.9946 GB, free: 11.19 MB / 0.6198 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.763e-06/0.2775, allocations: 0 / 0.9946 GB, free: 11.19 MB / 0.6198 GB Notification: Performance of matching and sorting (n=78) (initialization): time 0.001361/0.2788, allocations: 0.543 MB / 0.9952 GB, free: 10.64 MB / 0.6198 GB Notification: Performance of prepare postOptimizeDAE: time 3.205e-05/0.2789, allocations: 8 kB / 0.9952 GB, free: 10.63 MB / 0.6198 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.658e-05/0.279, allocations: 8 kB / 0.9952 GB, free: 10.62 MB / 0.6198 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.363e-05/0.279, allocations: 12.69 kB / 0.9952 GB, free: 10.61 MB / 0.6198 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004567/0.2795, allocations: 79.77 kB / 0.9953 GB, free: 10.54 MB / 0.6198 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.015e-05/0.2795, allocations: 15.95 kB / 0.9953 GB, free: 10.52 MB / 0.6198 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005428/0.2801, allocations: 63.42 kB / 0.9953 GB, free: 10.46 MB / 0.6198 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.295e-05/0.2801, allocations: 28 kB / 0.9954 GB, free: 10.43 MB / 0.6198 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 27 * Number of states: 0 () * Number of discrete variables: 53 ($PRE.transition1.enableFire,$PRE.transition2.enableFire,$PRE.transition3.enableFire,$PRE.transition4.enableFire,$PRE.transition5.enableFire,$whenCondition1,$PRE.runSig.combiTimeTable.nextTimeEvent,transition5.condition,stateGraphRoot.resume,stateGraphRoot.suspend,runSig.y,runSig.combiTimeTable.nextTimeEvent,$PRE.runSig.combiTimeTable.nextTimeEventScaled,runSig.combiTimeTable.nextTimeEventScaled,actMod,transition1.enableFire,transition2.condition,transition2.enableFire,transition3.enableFire,$PRE.warUp.localActive,warUp.localActive,warUp.inPort[2].occupied,warUp.outPort[2].available,$PRE.warUp.newActive,warUp.newActive,$PRE.warUp.oldActive,warUp.oldActive,warUp.active,off.active,$PRE.off.localActive,off.localActive,off.inPort[2].occupied,off.outPort[2].available,$PRE.off.newActive,off.newActive,$PRE.off.oldActive,off.oldActive,stateGraphRoot.activeSteps,transition4.enableFire,nor.active,$PRE.nor.localActive,nor.localActive,$PRE.nor.newActive,nor.newActive,$PRE.nor.oldActive,nor.oldActive,$PRE.warUpCtr.pre.u,transition5.enableFire,$PRE.warUpCtr.hysTem.y,warUpCtr.hysTem.y,$PRE.warUpCtr.hysPow.y,warUpCtr.hysPow.y,warUpCtr.pre.u) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (78): * Single equations (assignments): 78 * 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 0.0005234/0.2807, allocations: 262.8 kB / 0.9956 GB, free: 10.16 MB / 0.6198 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001451/0.2808, allocations: 67.16 kB / 0.9957 GB, free: 10.1 MB / 0.6198 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001079/0.2819, allocations: 392.1 kB / 0.996 GB, free: 9.707 MB / 0.6198 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.729e-06/0.282, allocations: 11.92 kB / 0.9961 GB, free: 9.695 MB / 0.6198 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.055e-06/0.282, allocations: 4 kB / 0.9961 GB, free: 9.691 MB / 0.6198 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.799e-06/0.282, allocations: 3.953 kB / 0.9961 GB, free: 9.688 MB / 0.6198 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002113/0.2841, allocations: 0.9985 MB / 0.997 GB, free: 8.629 MB / 0.6198 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.765e-06/0.2842, allocations: 4 kB / 0.997 GB, free: 8.625 MB / 0.6198 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002159/0.2844, allocations: 27.92 kB / 0.9971 GB, free: 8.598 MB / 0.6198 GB Notification: Performance of postOpt tearingSystem (simulation): time 9.798e-06/0.2845, allocations: 0 / 0.9971 GB, free: 8.598 MB / 0.6198 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.967e-05/0.2845, allocations: 15.94 kB / 0.9971 GB, free: 8.582 MB / 0.6198 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.791e-06/0.2845, allocations: 3.938 kB / 0.9971 GB, free: 8.578 MB / 0.6198 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.206e-06/0.2845, allocations: 8.047 kB / 0.9971 GB, free: 8.57 MB / 0.6198 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009433/0.2855, allocations: 454.8 kB / 0.9975 GB, free: 8.109 MB / 0.6198 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001632/0.2857, allocations: 152.1 kB / 0.9977 GB, free: 7.941 MB / 0.6198 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001152/0.2858, allocations: 12 kB / 0.9977 GB, free: 7.93 MB / 0.6198 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003046/0.2861, allocations: 15.94 kB / 0.9977 GB, free: 7.914 MB / 0.6198 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002024/0.2864, allocations: 55.91 kB / 0.9978 GB, free: 7.859 MB / 0.6198 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.915e-05/0.2864, allocations: 12 kB / 0.9978 GB, free: 7.848 MB / 0.6198 GB Notification: Performance of sorting global known variables: time 0.0006871/0.2871, allocations: 431 kB / 0.9982 GB, free: 7.43 MB / 0.6198 GB Notification: Performance of sort global known variables: time 7.21e-07/0.2871, allocations: 0 / 0.9982 GB, free: 7.43 MB / 0.6198 GB Notification: Performance of remove unused functions: time 0.0009289/0.2881, allocations: 135.6 kB / 0.9983 GB, free: 7.297 MB / 0.6198 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 35 (nor.active,off.active,warUp.localActive,$cse1,$cse2,$cse3,$cse4,$cse5,$whenCondition1,runSig.y,runSig.combiTimeTable.nextTimeEvent,runSig.combiTimeTable.nextTimeEventScaled,actMod,transition1.enableFire,transition2.condition,transition2.enableFire,transition3.enableFire,warUp.inPort[2].occupied,warUp.outPort[2].available,warUp.newActive,warUp.oldActive,warUp.active,off.localActive,off.inPort[2].occupied,off.outPort[2].available,off.newActive,off.oldActive,stateGraphRoot.activeSteps,transition4.enableFire,nor.localActive,nor.newActive,nor.oldActive,warUpCtr.hysTem.y,warUpCtr.hysPow.y,warUpCtr.pre.u) * Number of discrete states: 8 (runSig.combiTimeTable.nextTimeEvent,warUp.newActive,off.newActive,nor.newActive,warUpCtr.hysTem.y,warUpCtr.hysPow.y,warUpCtr.pre.u,runSig.combiTimeTable.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (43): * Single equations (assignments): 38 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 5 * 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 0.002552/0.2907, allocations: 1.332 MB / 0.9996 GB, free: 6.094 MB / 0.6198 GB Notification: Performance of simCode: created initialization part: time 0.001324/0.2921, allocations: 396.2 kB / 1 GB, free: 5.707 MB / 0.6198 GB Notification: Performance of simCode: created event and clocks part: time 6.392e-06/0.2921, allocations: 3.938 kB / 1 GB, free: 5.703 MB / 0.6198 GB Notification: Performance of simCode: created simulation system equations: time 0.0004563/0.2926, allocations: 155.8 kB / 1 GB, free: 5.551 MB / 0.6198 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009837/0.2936, allocations: 100.3 kB / 1 GB, free: 5.457 MB / 0.6198 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008261/0.3019, allocations: 3.72 MB / 1.004 GB, free: 1.598 MB / 0.6198 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004879/0.3024, allocations: 0.9458 MB / 1.005 GB, free: 0.625 MB / 0.6198 GB Notification: Performance of simCode: alias equations: time 0.0005335/0.303, allocations: 84.66 kB / 1.005 GB, free: 0.5391 MB / 0.6198 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004953/0.3035, allocations: 271.3 kB / 1.005 GB, free: 284 kB / 0.6198 GB Notification: Performance of SimCode: time 1.533e-06/0.3035, allocations: 0 / 1.005 GB, free: 284 kB / 0.6198 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05973/0.3633, allocations: 12.17 MB / 1.017 GB, free: 4.297 MB / 0.6355 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0003728/0.3637, allocations: 241.2 kB / 1.017 GB, free: 4.059 MB / 0.6355 GB Notification: Performance of buildModelFMU: Generate platform static: time 3.298/3.661, allocations: 0 / 1.017 GB, free: 4.059 MB / 0.6355 GB (rm -f Buildings_8.0.0_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTemperature.pipe ; mkfifo Buildings_8.0.0_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTemperature.pipe ; head -c 1048576 < Buildings_8.0.0_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTemperature.pipe >> ../files/Buildings_8.0.0_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTemperature.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_8_0_0_Buildings_Fluid_CHPs_BaseClasses_Validation_WarmUpTemperature_fmu --startTime=0 --stopTime=900 --timeout=50 --tolerance=1e-06 Buildings_8_0_0_Buildings_Fluid_CHPs_BaseClasses_Validation_WarmUpTemperature.fmu > Buildings_8.0.0_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTemperature.pipe 2>&1)