Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust.conf.json loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 9.0.0-master/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) Using package ModelicaServices with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Using package Modelica with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package Buildings with version 9.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 9.0.0-master/package.mo) Running command: translateModel(Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust") translateModel(Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust") Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 9.0.0-master/package.mo): time 1.984/1.984, allocations: 306.1 MB / 321.4 MB, free: 10.74 MB / 250.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001356/0.001356, allocations: 167.5 kB / 393.1 MB, free: 4.066 MB / 314.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.545/1.545, allocations: 225.7 MB / 0.6743 GB, free: 12.62 MB / 0.4948 GB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008578/0.0008578, allocations: 91.72 kB / 0.7935 GB, free: 40.04 MB / 0.5417 GB Notification: Performance of FrontEnd - loaded program: time 0.0003574/0.0003575, allocations: 8.531 kB / 0.9224 GB, free: 8.664 MB / 0.6355 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.6309/0.6312, allocations: 121.3 MB / 1.041 GB, free: 58.3 MB / 0.698 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust): time 0.9916/1.623, allocations: 346.4 MB / 1.379 GB, free: 39 MB / 0.8855 GB Notification: Performance of NFInst.instExpressions: time 0.04827/1.671, allocations: 44.66 MB / 1.423 GB, free: 26.59 MB / 0.8855 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.008185/1.679, allocations: 112.6 kB / 1.423 GB, free: 26.59 MB / 0.8855 GB Notification: Performance of NFTyping.typeComponents: time 0.008647/1.688, allocations: 1.977 MB / 1.425 GB, free: 26.54 MB / 0.8855 GB Notification: Performance of NFTyping.typeBindings: time 0.02288/1.711, allocations: 5.359 MB / 1.43 GB, free: 26.28 MB / 0.8855 GB Notification: Performance of NFTyping.typeClassSections: time 0.01034/1.721, allocations: 2.778 MB / 1.433 GB, free: 26.16 MB / 0.8855 GB Notification: Performance of NFFlatten.flatten: time 0.02076/1.742, allocations: 11.35 MB / 1.444 GB, free: 25.95 MB / 0.8855 GB Notification: Performance of NFFlatten.resolveConnections: time 0.006647/1.749, allocations: 3.445 MB / 1.447 GB, free: 24.78 MB / 0.8855 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01352/1.762, allocations: 4.273 MB / 1.451 GB, free: 24.01 MB / 0.8855 GB Notification: Performance of NFSimplifyModel.simplify: time 0.008924/1.771, allocations: 2.554 MB / 1.454 GB, free: 23.57 MB / 0.8855 GB Notification: Performance of NFPackage.collectConstants: time 0.001411/1.773, allocations: 125.6 kB / 1.454 GB, free: 23.57 MB / 0.8855 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01605/1.789, allocations: 5.642 MB / 1.46 GB, free: 22.33 MB / 0.8855 GB Notification: Performance of NFScalarize.scalarize: time 0.002698/1.792, allocations: 0.966 MB / 1.46 GB, free: 22.04 MB / 0.8855 GB Notification: Performance of NFVerifyModel.verify: time 0.004328/1.796, allocations: 1.781 MB / 1.462 GB, free: 21.44 MB / 0.8855 GB Notification: Performance of NFConvertDAE.convert: time 0.01421/1.81, allocations: 7.106 MB / 1.469 GB, free: 18.05 MB / 0.8855 GB Notification: Performance of FrontEnd - DAE generated: time 7.043e-06/1.81, allocations: 0 / 1.469 GB, free: 18.05 MB / 0.8855 GB Notification: Performance of FrontEnd: time 2.434e-06/1.81, allocations: 2.594 kB / 1.469 GB, free: 18.05 MB / 0.8855 GB Notification: Performance of Transformations before backend: time 0.0001685/1.811, allocations: 0 / 1.469 GB, free: 18.05 MB / 0.8855 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 645 * Number of variables: 645 Notification: Performance of Generate backend data structure: time 0.008563/1.819, allocations: 3.667 MB / 1.473 GB, free: 15.73 MB / 0.8855 GB Notification: Performance of prepare preOptimizeDAE: time 4.556e-05/1.819, allocations: 6.719 kB / 1.473 GB, free: 15.73 MB / 0.8855 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.008405/1.828, allocations: 1.476 MB / 1.474 GB, free: 15.14 MB / 0.8855 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.006182/1.834, allocations: 2.645 MB / 1.477 GB, free: 13.99 MB / 0.8855 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.001326/1.835, allocations: 0.5376 MB / 1.477 GB, free: 13.79 MB / 0.8855 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0009342/1.836, allocations: 273.7 kB / 1.478 GB, free: 13.78 MB / 0.8855 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01086/1.847, allocations: 3.474 MB / 1.481 GB, free: 12.1 MB / 0.8855 GB Notification: Performance of preOpt findStateOrder (simulation): time 7.679e-05/1.847, allocations: 6.906 kB / 1.481 GB, free: 12.09 MB / 0.8855 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000415/1.848, allocations: 106.2 kB / 1.481 GB, free: 12.07 MB / 0.8855 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.000136/1.848, allocations: 108.1 kB / 1.481 GB, free: 11.96 MB / 0.8855 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01021/1.858, allocations: 3.198 MB / 1.484 GB, free: 9.711 MB / 0.8855 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 0.03101/1.889, allocations: 14.42 MB / 1.498 GB, free: 13.2 MB / 0.9011 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00544/1.894, allocations: 1.888 MB / 1.5 GB, free: 11.8 MB / 0.9011 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002488/1.897, allocations: 0.8179 MB / 1.501 GB, free: 11.22 MB / 0.9011 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0006031/1.898, allocations: 301.9 kB / 1.501 GB, free: 10.88 MB / 0.9011 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.002967/1.901, allocations: 0.9737 MB / 1.502 GB, free: 10.13 MB / 0.9011 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.002715/1.903, allocations: 137.5 kB / 1.502 GB, free: 10.01 MB / 0.9011 GB Notification: Performance of pre-optimization done (n=108): time 1.239e-05/1.903, allocations: 0 / 1.502 GB, free: 10.01 MB / 0.9011 GB Notification: Performance of matching and sorting (n=108): time 0.01019/1.914, allocations: 2.536 MB / 1.505 GB, free: 8.012 MB / 0.9011 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001077/1.914, allocations: 119.4 kB / 1.505 GB, free: 7.875 MB / 0.9011 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.007866/1.922, allocations: 2.832 MB / 1.508 GB, free: 5.801 MB / 0.9011 GB Notification: Performance of collectPreVariables (initialization): time 0.0005125/1.922, allocations: 51.39 kB / 1.508 GB, free: 5.762 MB / 0.9011 GB Notification: Performance of collectInitialEqns (initialization): time 0.002093/1.924, allocations: 1.5 MB / 1.509 GB, free: 4.934 MB / 0.9011 GB Notification: Performance of collectInitialBindings (initialization): time 0.0007786/1.925, allocations: 378.8 kB / 1.51 GB, free: 4.621 MB / 0.9011 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001509/1.925, allocations: 26 kB / 1.51 GB, free: 4.617 MB / 0.9011 GB Notification: Performance of setup shared object (initialization): time 0.0002357/1.925, allocations: 367.3 kB / 1.51 GB, free: 4.273 MB / 0.9011 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003783/1.929, allocations: 0.9143 MB / 1.511 GB, free: 3.602 MB / 0.9011 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00427/1.934, allocations: 1.426 MB / 1.512 GB, free: 2.25 MB / 0.9011 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.007058/1.941, allocations: 2.082 MB / 1.514 GB, free: 0.5781 MB / 0.9011 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.56e-05/1.941, allocations: 0 / 1.514 GB, free: 0.5781 MB / 0.9011 GB Notification: Performance of matching and sorting (n=183) (initialization): time 0.01022/1.951, allocations: 2.586 MB / 1.517 GB, free: 14.61 MB / 0.9167 GB Notification: Performance of prepare postOptimizeDAE: time 0.0006155/1.952, allocations: 469.6 kB / 1.517 GB, free: 14.02 MB / 0.9167 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.945e-05/1.952, allocations: 8 kB / 1.517 GB, free: 14.02 MB / 0.9167 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.427e-05/1.952, allocations: 24 kB / 1.517 GB, free: 13.99 MB / 0.9167 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003569/1.955, allocations: 468 kB / 1.518 GB, free: 13.57 MB / 0.9167 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.787e-05/1.955, allocations: 27.72 kB / 1.518 GB, free: 13.55 MB / 0.9167 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006739/1.962, allocations: 0.5096 MB / 1.518 GB, free: 13.06 MB / 0.9167 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000377/1.963, allocations: 76.28 kB / 1.518 GB, free: 13 MB / 0.9167 GB Notification: Performance of prepare postOptimizeDAE: time 2.05e-05/1.963, allocations: 4 kB / 1.518 GB, free: 12.99 MB / 0.9167 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.008783/1.971, allocations: 2.269 MB / 1.521 GB, free: 11.37 MB / 0.9167 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.978e-05/1.971, allocations: 12 kB / 1.521 GB, free: 11.36 MB / 0.9167 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.006e-05/1.971, allocations: 20 kB / 1.521 GB, free: 11.34 MB / 0.9167 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00306/1.975, allocations: 461.5 kB / 1.521 GB, free: 10.92 MB / 0.9167 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.38e-05/1.975, allocations: 30.08 kB / 1.521 GB, free: 10.89 MB / 0.9167 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00591/1.981, allocations: 443 kB / 1.521 GB, free: 10.48 MB / 0.9167 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002774/1.981, allocations: 76.34 kB / 1.522 GB, free: 10.42 MB / 0.9167 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 52 * Number of states: 0 () * Number of discrete variables: 6 ($whenCondition1,$PRE.TSet.T_start,TSet.T_start,$PRE.TSet.count,TSet.count,conPI.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (180): * Single equations (assignments): 177 * Array equations: 2 * Algorithm blocks: 1 * 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 0.002905/1.984, allocations: 0.8613 MB / 1.522 GB, free: 9.859 MB / 0.9167 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001007/1.985, allocations: 283 kB / 1.523 GB, free: 9.582 MB / 0.9167 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006856/1.992, allocations: 1.955 MB / 1.525 GB, free: 8.168 MB / 0.9167 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.541e-05/1.992, allocations: 8 kB / 1.525 GB, free: 8.16 MB / 0.9167 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.959e-06/1.992, allocations: 4 kB / 1.525 GB, free: 8.156 MB / 0.9167 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.005319/1.997, allocations: 1.533 MB / 1.526 GB, free: 6.977 MB / 0.9167 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01657/2.014, allocations: 4.966 MB / 1.531 GB, free: 3.305 MB / 0.9167 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.611e-05/2.014, allocations: 8 kB / 1.531 GB, free: 3.297 MB / 0.9167 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002377/2.016, allocations: 278.4 kB / 1.531 GB, free: 3.047 MB / 0.9167 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003474/2.016, allocations: 54.31 kB / 1.531 GB, free: 3 MB / 0.9167 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000144/2.017, allocations: 34.48 kB / 1.531 GB, free: 2.98 MB / 0.9167 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00182/2.018, allocations: 1.455 MB / 1.533 GB, free: 1.523 MB / 0.9167 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.458e-06/2.018, allocations: 8.875 kB / 1.533 GB, free: 1.52 MB / 0.9167 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01144/2.03, allocations: 2.944 MB / 1.536 GB, free: 15.22 MB / 0.9323 GB Notification: Performance of postOpt removeConstants (simulation): time 0.004638/2.035, allocations: 0.5574 MB / 1.536 GB, free: 14.77 MB / 0.9323 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001582/2.036, allocations: 24.5 kB / 1.536 GB, free: 14.76 MB / 0.9323 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.005442/2.042, allocations: 314.4 kB / 1.536 GB, free: 14.47 MB / 0.9323 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004013/2.042, allocations: 90.05 kB / 1.537 GB, free: 14.4 MB / 0.9323 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0003135/2.043, allocations: 50.59 kB / 1.537 GB, free: 14.36 MB / 0.9323 GB Notification: Performance of sorting global known variables: time 0.007533/2.05, allocations: 1.979 MB / 1.539 GB, free: 12.94 MB / 0.9323 GB Notification: Performance of sort global known variables: time 9.61e-07/2.05, allocations: 0 / 1.539 GB, free: 12.94 MB / 0.9323 GB Notification: Performance of remove unused functions: time 0.009514/2.06, allocations: 1.537 MB / 1.54 GB, free: 11.47 MB / 0.9323 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 25 * Number of states: 4 (conPI.I.y,vol.dynBal.U,vol.dynBal.m,vol.dynBal.mXi[1]) * Number of discrete variables: 3 ($whenCondition1,TSet.T_start,TSet.count) * Number of discrete states: 1 (TSet.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (106): * Single equations (assignments): 103 * 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 0.001655/2.061, allocations: 462.4 kB / 1.54 GB, free: 11.07 MB / 0.9323 GB Notification: Performance of simCode: created initialization part: time 0.008691/2.07, allocations: 3.166 MB / 1.544 GB, free: 8.703 MB / 0.9323 GB Notification: Performance of simCode: created event and clocks part: time 9.377e-06/2.07, allocations: 7.938 kB / 1.544 GB, free: 8.695 MB / 0.9323 GB Notification: Performance of simCode: created simulation system equations: time 0.002186/2.072, allocations: 0.938 MB / 1.544 GB, free: 7.992 MB / 0.9323 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0109/2.083, allocations: 1.586 MB / 1.546 GB, free: 6.684 MB / 0.9323 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01794/2.101, allocations: 7.096 MB / 1.553 GB, free: 60 kB / 0.9323 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003523/2.105, allocations: 2.128 MB / 1.555 GB, free: 14.04 MB / 0.948 GB Notification: Performance of simCode: alias equations: time 0.005181/2.11, allocations: 0.7455 MB / 1.556 GB, free: 13.29 MB / 0.948 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001254/2.111, allocations: 221.9 kB / 1.556 GB, free: 13.08 MB / 0.948 GB Notification: Performance of SimCode: time 2.154e-06/2.111, allocations: 0 / 1.556 GB, free: 13.08 MB / 0.948 GB Notification: Performance of Templates: time 0.1328/2.244, allocations: 57.84 MB / 1.612 GB, free: 4.074 MB / 0.9948 GB make -j1 -f Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust.makefile (rm -f Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust.pipe ; mkfifo Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust.pipe >> ../files/Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust.sim & ./Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_latest_Buildings.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust.pipe 2>&1)