Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL.conf.json
loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 8.1.1-maint.8.1.x/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 8.1.1 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 8.1.1-maint.8.1.x/package.mo)
Running command: translateModel(Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL")
translateModel(Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL")
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 8.1.1-maint.8.1.x/package.mo): time 1.791/1.791, allocations: 297.4 MB / 312.6 MB, free: 2.918 MB / 234.7 MB
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001/0.001, allocations: 186 kB / 382.3 MB, free: 14.82 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 1.476/1.476, allocations: 225.7 MB / 0.6617 GB, free: 7.203 MB / 490.7 MB
Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008123/0.0008124, allocations: 95.48 kB / 0.7789 GB, free: 46.73 MB / 0.5417 GB
Notification: Performance of FrontEnd - loaded program: time 0.0003874/0.0003875, allocations: 8 kB / 0.9058 GB, free: 4.883 MB / 0.6198 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.9112/0.9116, allocations: 119.2 MB / 1.022 GB, free: 57.96 MB / 0.698 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL): time 0.06854/0.9802, allocations: 60.91 MB / 1.082 GB, free: 13.12 MB / 0.698 GB
Notification: Performance of NFInst.instExpressions: time 0.02485/1.005, allocations: 16.57 MB / 1.098 GB, free: 14.74 MB / 0.7136 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.003247/1.008, allocations: 51.06 kB / 1.098 GB, free: 14.71 MB / 0.7136 GB
Notification: Performance of NFTyping.typeComponents: time 0.003076/1.012, allocations: 0.5452 MB / 1.099 GB, free: 14.39 MB / 0.7136 GB
Notification: Performance of NFTyping.typeBindings: time 0.008868/1.02, allocations: 1.789 MB / 1.1 GB, free: 13.32 MB / 0.7136 GB
Notification: Performance of NFTyping.typeClassSections: time 0.004765/1.025, allocations: 1.094 MB / 1.101 GB, free: 12.71 MB / 0.7136 GB
Notification: Performance of NFFlatten.flatten: time 0.006969/1.032, allocations: 3.877 MB / 1.105 GB, free: 11.18 MB / 0.7136 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.002605/1.035, allocations: 0.8997 MB / 1.106 GB, free: 10.82 MB / 0.7136 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.00396/1.039, allocations: 1.152 MB / 1.107 GB, free: 10.31 MB / 0.7136 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002345/1.041, allocations: 0.8657 MB / 1.108 GB, free: 9.938 MB / 0.7136 GB
Notification: Performance of NFPackage.collectConstants: time 0.0003468/1.042, allocations: 45.19 kB / 1.108 GB, free: 9.938 MB / 0.7136 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.00435/1.046, allocations: 1.309 MB / 1.109 GB, free: 9.52 MB / 0.7136 GB
Notification: Performance of NFScalarize.scalarize: time 0.0005461/1.046, allocations: 211.4 kB / 1.109 GB, free: 9.406 MB / 0.7136 GB
Notification: Performance of NFVerifyModel.verify: time 0.001674/1.048, allocations: 0.639 MB / 1.11 GB, free: 9.012 MB / 0.7136 GB
Notification: Performance of NFConvertDAE.convert: time 0.005187/1.053, allocations: 2.233 MB / 1.112 GB, free: 8.328 MB / 0.7136 GB
Notification: Performance of FrontEnd - DAE generated: time 4.659e-06/1.053, allocations: 0 / 1.112 GB, free: 8.328 MB / 0.7136 GB
Notification: Performance of FrontEnd: time 1.533e-06/1.053, allocations: 0 / 1.112 GB, free: 8.328 MB / 0.7136 GB
Notification: Performance of Transformations before backend: time 6.025e-05/1.053, allocations: 0 / 1.112 GB, free: 8.328 MB / 0.7136 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 192
 * Number of variables: 192
Notification: Performance of Generate backend data structure: time 0.004997/1.059, allocations: 1.501 MB / 1.114 GB, free: 7.301 MB / 0.7136 GB
Notification: Performance of prepare preOptimizeDAE: time 4.213e-05/1.059, allocations: 9.281 kB / 1.114 GB, free: 7.301 MB / 0.7136 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002346/1.061, allocations: 396.6 kB / 1.114 GB, free: 7.207 MB / 0.7136 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.003199/1.064, allocations: 1.133 MB / 1.115 GB, free: 6.492 MB / 0.7136 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004952/1.065, allocations: 128.6 kB / 1.115 GB, free: 6.461 MB / 0.7136 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002333/1.065, allocations: 78.47 kB / 1.115 GB, free: 6.438 MB / 0.7136 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.002917/1.068, allocations: 0.9626 MB / 1.116 GB, free: 6.004 MB / 0.7136 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.553e-05/1.068, allocations: 3.312 kB / 1.116 GB, free: 6.004 MB / 0.7136 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001211/1.068, allocations: 34.62 kB / 1.116 GB, free: 5.977 MB / 0.7136 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.204e-05/1.068, allocations: 23.75 kB / 1.116 GB, free: 5.973 MB / 0.7136 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003591/1.072, allocations: 0.8615 MB / 1.117 GB, free: 5.688 MB / 0.7136 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 0.01046/1.082, allocations: 4.53 MB / 1.122 GB, free: 2.402 MB / 0.7136 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.002039/1.084, allocations: 0.6415 MB / 1.122 GB, free: 2.184 MB / 0.7136 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0007298/1.085, allocations: 303.7 kB / 1.123 GB, free: 2.086 MB / 0.7136 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.001491/1.086, allocations: 1.399 MB / 1.124 GB, free: 0.5586 MB / 0.7136 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.687e-05/1.087, allocations: 42 kB / 1.124 GB, free: 0.5156 MB / 0.7136 GB
Notification: Performance of pre-optimization done (n=48): time 2.766e-06/1.087, allocations: 0 / 1.124 GB, free: 0.5156 MB / 0.7136 GB
Notification: Performance of matching and sorting (n=48): time 0.006209/1.093, allocations: 1.758 MB / 1.126 GB, free: 20 kB / 0.7136 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 7.052e-05/1.093, allocations: 57.69 kB / 1.126 GB, free: 15.96 MB / 0.7292 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002304/1.095, allocations: 1.047 MB / 1.127 GB, free: 15.53 MB / 0.7292 GB
Notification: Performance of collectPreVariables (initialization): time 0.0001177/1.095, allocations: 38.14 kB / 1.127 GB, free: 15.49 MB / 0.7292 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0004904/1.096, allocations: 0.5213 MB / 1.127 GB, free: 15.07 MB / 0.7292 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0001738/1.096, allocations: 166.8 kB / 1.128 GB, free: 14.94 MB / 0.7292 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 4.317e-05/1.096, allocations: 10.94 kB / 1.128 GB, free: 14.93 MB / 0.7292 GB
Notification: Performance of setup shared object (initialization): time 0.0001248/1.096, allocations: 328.4 kB / 1.128 GB, free: 14.62 MB / 0.7292 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008448/1.097, allocations: 307.8 kB / 1.128 GB, free: 14.53 MB / 0.7292 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.001043/1.098, allocations: 494.6 kB / 1.129 GB, free: 14.23 MB / 0.7292 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.00149/1.1, allocations: 0.664 MB / 1.129 GB, free: 13.9 MB / 0.7292 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.269e-06/1.1, allocations: 1.312 kB / 1.129 GB, free: 13.9 MB / 0.7292 GB
Notification: Performance of matching and sorting (n=69) (initialization): time 0.003565/1.103, allocations: 1.164 MB / 1.13 GB, free: 13.52 MB / 0.7292 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0001543/1.103, allocations: 196.3 kB / 1.131 GB, free: 13.29 MB / 0.7292 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.131e-05/1.103, allocations: 4.375 kB / 1.131 GB, free: 13.29 MB / 0.7292 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001328/1.105, allocations: 330.9 kB / 1.131 GB, free: 13.21 MB / 0.7292 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000526/1.105, allocations: 125 kB / 1.131 GB, free: 13.2 MB / 0.7292 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001541/1.107, allocations: 0.9398 MB / 1.132 GB, free: 12.54 MB / 0.7292 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001388/1.108, allocations: 180.8 kB / 1.132 GB, free: 12.48 MB / 0.7292 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001103/1.108, allocations: 33.03 kB / 1.132 GB, free: 12.47 MB / 0.7292 GB
Notification: Performance of prepare postOptimizeDAE: time 1.091e-05/1.108, allocations: 2.938 kB / 1.132 GB, free: 12.47 MB / 0.7292 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.003477/1.112, allocations: 1.027 MB / 1.133 GB, free: 12.17 MB / 0.7292 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.353e-05/1.112, allocations: 2.594 kB / 1.133 GB, free: 12.17 MB / 0.7292 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.00124/1.113, allocations: 340 kB / 1.133 GB, free: 12.09 MB / 0.7292 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004975/1.114, allocations: 115 kB / 1.134 GB, free: 12.08 MB / 0.7292 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00154/1.115, allocations: 0.9365 MB / 1.135 GB, free: 11.41 MB / 0.7292 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001276/1.116, allocations: 158.3 kB / 1.135 GB, free: 11.37 MB / 0.7292 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.089e-05/1.117, allocations: 28.39 kB / 1.135 GB, free: 11.36 MB / 0.7292 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 15
 * 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 (55):
 * Single equations (assignments): 54
 * Array equations: 0
 * Algorithm blocks: 0
 * 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): 0 systems
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(1,14)}
Notification: Performance of prepare postOptimizeDAE: time 0.0006918/1.117, allocations: 356.8 kB / 1.135 GB, free: 11.08 MB / 0.7292 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003555/1.118, allocations: 111.9 kB / 1.135 GB, free: 11.02 MB / 0.7292 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003147/1.121, allocations: 1.128 MB / 1.136 GB, free: 10.62 MB / 0.7292 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.57e-05/1.121, allocations: 10.22 kB / 1.136 GB, free: 10.62 MB / 0.7292 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 6.973e-06/1.121, allocations: 0 / 1.136 GB, free: 10.62 MB / 0.7292 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.174e-06/1.121, allocations: 3.375 kB / 1.136 GB, free: 10.62 MB / 0.7292 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005344/1.126, allocations: 2.238 MB / 1.138 GB, free: 9.609 MB / 0.7292 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.034e-05/1.126, allocations: 6.375 kB / 1.138 GB, free: 9.605 MB / 0.7292 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002512/1.126, allocations: 68.47 kB / 1.139 GB, free: 9.598 MB / 0.7292 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.001036/1.128, allocations: 327.8 kB / 1.139 GB, free: 9.52 MB / 0.7292 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.534e-05/1.128, allocations: 17.31 kB / 1.139 GB, free: 9.512 MB / 0.7292 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001467/1.129, allocations: 0.9656 MB / 1.14 GB, free: 8.84 MB / 0.7292 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.751e-06/1.129, allocations: 3.625 kB / 1.14 GB, free: 8.84 MB / 0.7292 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003484/1.133, allocations: 1.252 MB / 1.141 GB, free: 8.301 MB / 0.7292 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0006187/1.133, allocations: 285 kB / 1.141 GB, free: 8.086 MB / 0.7292 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000233/1.133, allocations: 13 kB / 1.141 GB, free: 8.078 MB / 0.7292 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000952/1.134, allocations: 95.33 kB / 1.141 GB, free: 8.066 MB / 0.7292 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001045/1.135, allocations: 46.86 kB / 1.141 GB, free: 8.055 MB / 0.7292 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.844e-05/1.135, allocations: 23.59 kB / 1.141 GB, free: 8.051 MB / 0.7292 GB
Notification: Performance of sorting global known variables: time 0.001407/1.136, allocations: 0.7405 MB / 1.142 GB, free: 7.734 MB / 0.7292 GB
Notification: Performance of sort global known variables: time 2.1e-07/1.136, allocations: 0 / 1.142 GB, free: 7.734 MB / 0.7292 GB
Notification: Performance of remove unused functions: time 0.001906/1.138, allocations: 0.5799 MB / 1.143 GB, free: 7.613 MB / 0.7292 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 10
 * 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 simulation (38):
 * Single equations (assignments): 33
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 4
 * 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): 0 systems
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(1,16)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.0009726/1.139, allocations: 424.2 kB / 1.143 GB, free: 7.406 MB / 0.7292 GB
Notification: Performance of simCode: created initialization part: time 0.003082/1.142, allocations: 1.105 MB / 1.144 GB, free: 7.098 MB / 0.7292 GB
Notification: Performance of simCode: created event and clocks part: time 4.639e-06/1.142, allocations: 5.656 kB / 1.144 GB, free: 7.094 MB / 0.7292 GB
Notification: Performance of simCode: created simulation system equations: time 0.0008415/1.143, allocations: 350.2 kB / 1.145 GB, free: 6.996 MB / 0.7292 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002772/1.146, allocations: 0.5315 MB / 1.145 GB, free: 6.844 MB / 0.7292 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004779/1.15, allocations: 2.286 MB / 1.147 GB, free: 5.461 MB / 0.7292 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007992/1.151, allocations: 1.066 MB / 1.148 GB, free: 4.73 MB / 0.7292 GB
Notification: Performance of simCode: alias equations: time 0.001271/1.153, allocations: 226.3 kB / 1.149 GB, free: 4.668 MB / 0.7292 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002439/1.153, allocations: 87.11 kB / 1.149 GB, free: 4.652 MB / 0.7292 GB
Notification: Performance of SimCode: time 5.31e-07/1.153, allocations: 0 / 1.149 GB, free: 4.652 MB / 0.7292 GB
Notification: Performance of Templates: time 0.04938/1.202, allocations: 24.81 MB / 1.173 GB, free: 4.949 MB / 0.7448 GB
make -j1 -f Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL.makefile
(rm -f Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL.pipe ; mkfifo Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL.pipe >> ../files/Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL.sim & ./Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.Chillers.Validation.Carnot_TEva_etaPL.pipe 2>&1)