Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.8.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTimeDelay.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/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 8.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTimeDelay,fileNamePrefix="Buildings_maint_8_0_x_Buildings_Fluid_CHPs_BaseClasses_Validation_WarmUpTimeDelay",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTimeDelay,fileNamePrefix="Buildings_maint_8_0_x_Buildings_Fluid_CHPs_BaseClasses_Validation_WarmUpTimeDelay",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo): time 1.653/1.653, allocations: 288.2 MB / 303.2 MB, free: 8.016 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001104/0.001104, allocations: 185 kB / 371.8 MB, free: 10.29 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.657/1.657, allocations: 205.4 MB / 0.6305 GB, free: 10.06 MB / 458.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.000908/0.000908, allocations: 110.8 kB / 0.7439 GB, free: 5.969 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0005383/0.0005386, allocations: 13.41 kB / 0.8669 GB, free: 142 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.264/0.2646, allocations: 115.3 MB / 0.9795 GB, free: 27.62 MB / 0.6198 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTimeDelay): time 0.004134/0.2688, allocations: 2.613 MB / 0.982 GB, free: 24.98 MB / 0.6198 GB Notification: Performance of NFInst.instExpressions: time 0.003455/0.2723, allocations: 1.573 MB / 0.9836 GB, free: 23.4 MB / 0.6198 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005866/0.2729, allocations: 11.94 kB / 0.9836 GB, free: 23.39 MB / 0.6198 GB Notification: Performance of NFTyping.typeComponents: time 0.001043/0.2739, allocations: 278.8 kB / 0.9838 GB, free: 23.12 MB / 0.6198 GB Notification: Performance of NFTyping.typeBindings: time 0.0004872/0.2744, allocations: 171.5 kB / 0.984 GB, free: 22.95 MB / 0.6198 GB Notification: Performance of NFTyping.typeClassSections: time 0.00115/0.2756, allocations: 289.2 kB / 0.9843 GB, free: 22.67 MB / 0.6198 GB Notification: Performance of NFFlatten.flatten: time 0.0007148/0.2763, allocations: 484.3 kB / 0.9847 GB, free: 22.2 MB / 0.6198 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0005929/0.2769, allocations: 390.4 kB / 0.9851 GB, free: 21.81 MB / 0.6198 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000294/0.2773, allocations: 215.1 kB / 0.9853 GB, free: 21.6 MB / 0.6198 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0002818/0.2775, allocations: 218.9 kB / 0.9855 GB, free: 21.39 MB / 0.6198 GB Notification: Performance of NFPackage.collectConstants: time 6.227e-05/0.2776, allocations: 20 kB / 0.9856 GB, free: 21.37 MB / 0.6198 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0002162/0.2779, allocations: 59.92 kB / 0.9856 GB, free: 21.31 MB / 0.6198 GB Notification: Performance of NFScalarize.scalarize: time 0.0001787/0.278, allocations: 151.4 kB / 0.9858 GB, free: 21.16 MB / 0.6198 GB Notification: Performance of NFVerifyModel.verify: time 0.0001538/0.2782, allocations: 137.3 kB / 0.9859 GB, free: 21.02 MB / 0.6198 GB Notification: Performance of NFConvertDAE.convert: time 0.000672/0.2789, allocations: 0.5494 MB / 0.9864 GB, free: 20.47 MB / 0.6198 GB Notification: Performance of FrontEnd - DAE generated: time 3.607e-06/0.2789, allocations: 0 / 0.9864 GB, free: 20.47 MB / 0.6198 GB Notification: Performance of FrontEnd: time 2.614e-06/0.2789, allocations: 4 kB / 0.9864 GB, free: 20.46 MB / 0.6198 GB Notification: Performance of Transformations before backend: time 9.989e-06/0.279, allocations: 0 / 0.9864 GB, free: 20.46 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: 126 * Number of variables: 126 Notification: Performance of Generate backend data structure: time 0.001665/0.2806, allocations: 0.8825 MB / 0.9873 GB, free: 19.53 MB / 0.6198 GB Notification: Performance of prepare preOptimizeDAE: time 5.863e-05/0.2807, allocations: 12.02 kB / 0.9873 GB, free: 19.52 MB / 0.6198 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001432/0.2809, allocations: 94.52 kB / 0.9874 GB, free: 19.41 MB / 0.6198 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001695/0.281, allocations: 90.91 kB / 0.9875 GB, free: 19.32 MB / 0.6198 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0008196/0.2819, allocations: 475.5 kB / 0.9879 GB, free: 18.82 MB / 0.6198 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.902e-05/0.282, allocations: 82.69 kB / 0.988 GB, free: 18.73 MB / 0.6198 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.156e-05/0.2821, allocations: 52 kB / 0.9881 GB, free: 18.68 MB / 0.6198 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001116/0.2832, allocations: 0.6021 MB / 0.9886 GB, free: 18.01 MB / 0.6198 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.911e-05/0.2832, allocations: 3.938 kB / 0.9887 GB, free: 18.01 MB / 0.6198 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.837e-05/0.2833, allocations: 23.95 kB / 0.9887 GB, free: 17.98 MB / 0.6198 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.666e-05/0.2833, allocations: 15.98 kB / 0.9887 GB, free: 17.97 MB / 0.6198 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007904/0.2841, allocations: 379.5 kB / 0.9891 GB, free: 17.6 MB / 0.6198 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002929/0.2871, allocations: 2.647 MB / 0.9916 GB, free: 14.84 MB / 0.6198 GB Notification: Performance of preOpt comSubExp (simulation): time 0.000677/0.2878, allocations: 273.5 kB / 0.9919 GB, free: 14.56 MB / 0.6198 GB Notification: Performance of preOpt evalFunc (simulation): time 4.008e-05/0.2878, allocations: 12.23 kB / 0.9919 GB, free: 14.55 MB / 0.6198 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004981/0.2884, allocations: 203.4 kB / 0.9921 GB, free: 14.34 MB / 0.6198 GB Notification: Performance of pre-optimization done (n=38): time 2.936e-06/0.2884, allocations: 0 / 0.9921 GB, free: 14.34 MB / 0.6198 GB Notification: Performance of matching and sorting (n=38): time 0.00081/0.2892, allocations: 444 kB / 0.9925 GB, free: 13.9 MB / 0.6198 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.111e-05/0.2893, allocations: 97.03 kB / 0.9926 GB, free: 13.79 MB / 0.6198 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004885/0.2897, allocations: 0.609 MB / 0.9932 GB, free: 13.16 MB / 0.6198 GB Notification: Performance of collectPreVariables (initialization): time 3.927e-05/0.2898, allocations: 53.69 kB / 0.9933 GB, free: 13.11 MB / 0.6198 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001749/0.29, allocations: 360.4 kB / 0.9936 GB, free: 12.75 MB / 0.6198 GB Notification: Performance of collectInitialBindings (initialization): time 6.067e-05/0.29, allocations: 98.73 kB / 0.9937 GB, free: 12.65 MB / 0.6198 GB Notification: Performance of simplifyInitialFunctions (initialization): time 1.972e-05/0.2901, allocations: 12 kB / 0.9937 GB, free: 12.64 MB / 0.6198 GB Notification: Performance of setup shared object (initialization): time 8.139e-05/0.2902, allocations: 378.8 kB / 0.9941 GB, free: 12.26 MB / 0.6198 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001957/0.2904, allocations: 125.2 kB / 0.9942 GB, free: 12.14 MB / 0.6198 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002634/0.2906, allocations: 337.5 kB / 0.9945 GB, free: 11.73 MB / 0.6198 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002368/0.2909, allocations: 140.8 kB / 0.9947 GB, free: 11.59 MB / 0.6198 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.226e-06/0.2909, allocations: 4 kB / 0.9947 GB, free: 11.59 MB / 0.6198 GB Notification: Performance of matching and sorting (n=76) (initialization): time 0.0006279/0.2915, allocations: 0.5186 MB / 0.9952 GB, free: 11.07 MB / 0.6198 GB Notification: Performance of prepare postOptimizeDAE: time 1.912e-05/0.2916, allocations: 8 kB / 0.9952 GB, free: 11.06 MB / 0.6198 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.917e-06/0.2916, allocations: 4 kB / 0.9952 GB, free: 11.05 MB / 0.6198 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.141e-05/0.2916, allocations: 12 kB / 0.9952 GB, free: 11.04 MB / 0.6198 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002193/0.2918, allocations: 75.78 kB / 0.9953 GB, free: 10.97 MB / 0.6198 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.46e-05/0.2918, allocations: 15.92 kB / 0.9953 GB, free: 10.95 MB / 0.6198 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002202/0.2921, allocations: 59.52 kB / 0.9953 GB, free: 10.89 MB / 0.6198 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.936e-05/0.2921, allocations: 28.28 kB / 0.9954 GB, free: 10.87 MB / 0.6198 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 26 * 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,$PRE.runSig.combiTimeTable.nextTimeEvent,transition5.condition,stateGraphRoot.resume,stateGraphRoot.suspend,$whenCondition2,$whenCondition3,$whenCondition4,runSig.y,runSig.combiTimeTable.nextTimeEvent,$PRE.runSig.combiTimeTable.nextTimeEventScaled,runSig.combiTimeTable.nextTimeEventScaled,actMod,transition1.enableFire,transition2.enableFire,transition3.enableFire,$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,$PRE.warUpCtr.timer.passed,warUpCtr.timer.passed,$PRE.warUpCtr.timer.entryTime,warUpCtr.timer.entryTime,transition5.enableFire) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (76): * Single equations (assignments): 76 * 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 0.0002545/0.2924, allocations: 263.7 kB / 0.9956 GB, free: 10.6 MB / 0.6198 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.035e-05/0.2924, allocations: 71.11 kB / 0.9957 GB, free: 10.53 MB / 0.6198 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0005831/0.293, allocations: 399.3 kB / 0.9961 GB, free: 10.13 MB / 0.6198 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.61e-06/0.2931, allocations: 4 kB / 0.9961 GB, free: 10.13 MB / 0.6198 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.089e-06/0.2931, allocations: 4 kB / 0.9961 GB, free: 10.12 MB / 0.6198 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.322e-06/0.2931, allocations: 3.984 kB / 0.9961 GB, free: 10.12 MB / 0.6198 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001339/0.2944, allocations: 1.044 MB / 0.9971 GB, free: 9.008 MB / 0.6198 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.264e-06/0.2944, allocations: 0 / 0.9971 GB, free: 9.008 MB / 0.6198 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 9.092e-05/0.2945, allocations: 27.92 kB / 0.9971 GB, free: 8.98 MB / 0.6198 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.44e-06/0.2945, allocations: 4 kB / 0.9971 GB, free: 8.977 MB / 0.6198 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.377e-05/0.2946, allocations: 11.98 kB / 0.9971 GB, free: 8.965 MB / 0.6198 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.815e-06/0.2946, allocations: 4 kB / 0.9971 GB, free: 8.961 MB / 0.6198 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.575e-06/0.2946, allocations: 4 kB / 0.9971 GB, free: 8.957 MB / 0.6198 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004913/0.2951, allocations: 475.2 kB / 0.9976 GB, free: 8.477 MB / 0.6198 GB Notification: Performance of postOpt removeConstants (simulation): time 8.664e-05/0.2952, allocations: 136.3 kB / 0.9977 GB, free: 8.324 MB / 0.6198 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 6.535e-05/0.2953, allocations: 12 kB / 0.9977 GB, free: 8.312 MB / 0.6198 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001486/0.2954, allocations: 23.92 kB / 0.9978 GB, free: 8.289 MB / 0.6198 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.754e-05/0.2955, allocations: 43.94 kB / 0.9978 GB, free: 8.246 MB / 0.6198 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.932e-05/0.2956, allocations: 15.98 kB / 0.9978 GB, free: 8.23 MB / 0.6198 GB Notification: Performance of sorting global known variables: time 0.000362/0.2959, allocations: 403 kB / 0.9982 GB, free: 7.844 MB / 0.6198 GB Notification: Performance of sort global known variables: time 4.21e-07/0.2959, allocations: 0 / 0.9982 GB, free: 7.844 MB / 0.6198 GB Notification: Performance of remove unused functions: time 0.0005084/0.2964, allocations: 135.6 kB / 0.9983 GB, free: 7.711 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: 36 (nor.active,off.active,warUp.active,warUp.localActive,$cse1,$cse2,$cse3,$cse4,$cse5,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition1,runSig.y,runSig.combiTimeTable.nextTimeEvent,runSig.combiTimeTable.nextTimeEventScaled,actMod,transition1.enableFire,transition2.enableFire,transition3.enableFire,warUp.inPort[2].occupied,warUp.outPort[2].available,warUp.newActive,warUp.oldActive,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.timer.passed,warUpCtr.timer.entryTime) * Number of discrete states: 6 (runSig.combiTimeTable.nextTimeEvent,warUp.newActive,warUpCtr.timer.entryTime,off.newActive,nor.newActive,runSig.combiTimeTable.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (43): * Single equations (assignments): 36 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 7 * 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 0.001697/0.2982, allocations: 1.356 MB / 0.9996 GB, free: 6.484 MB / 0.6198 GB Notification: Performance of simCode: created initialization part: time 0.0006156/0.2988, allocations: 368.3 kB / 1 GB, free: 6.125 MB / 0.6198 GB Notification: Performance of simCode: created event and clocks part: time 3.436e-06/0.2988, allocations: 8.125 kB / 1 GB, free: 6.117 MB / 0.6198 GB Notification: Performance of simCode: created simulation system equations: time 0.0002266/0.299, allocations: 179.7 kB / 1 GB, free: 5.941 MB / 0.6198 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004072/0.2995, allocations: 77.11 kB / 1 GB, free: 5.867 MB / 0.6198 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004755/0.3042, allocations: 7.18 MB / 1.007 GB, free: 14.52 MB / 0.6355 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005046/0.3047, allocations: 0.9455 MB / 1.008 GB, free: 13.55 MB / 0.6355 GB Notification: Performance of simCode: alias equations: time 0.0002557/0.305, allocations: 72.34 kB / 1.008 GB, free: 13.47 MB / 0.6355 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003056/0.3053, allocations: 247.3 kB / 1.008 GB, free: 13.23 MB / 0.6355 GB Notification: Performance of SimCode: time 4.4e-07/0.3053, allocations: 0 / 1.008 GB, free: 13.23 MB / 0.6355 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.02609/0.3314, allocations: 11.39 MB / 1.02 GB, free: 1.977 MB / 0.6355 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002266/0.3317, allocations: 242.6 kB / 1.02 GB, free: 1.738 MB / 0.6355 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.324/2.656, allocations: 7.938 kB / 1.02 GB, free: 1.73 MB / 0.6355 GB (rm -f Buildings_maint.8.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTimeDelay.pipe ; mkfifo Buildings_maint.8.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTimeDelay.pipe ; head -c 1048576 < Buildings_maint.8.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTimeDelay.pipe >> ../files/Buildings_maint.8.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTimeDelay.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_maint_8_0_x_Buildings_Fluid_CHPs_BaseClasses_Validation_WarmUpTimeDelay_fmu --startTime=0 --stopTime=900 --timeout=50 --tolerance=1e-06 Buildings_maint_8_0_x_Buildings_Fluid_CHPs_BaseClasses_Validation_WarmUpTimeDelay.fmu > Buildings_maint.8.0.x_Buildings.Fluid.CHPs.BaseClasses.Validation.WarmUpTimeDelay.pipe 2>&1)