Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Controls.OBC.CDL.Logical.Sources.Validation.TimeTableNegativeStartTime.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.Controls.OBC.CDL.Logical.Sources.Validation.TimeTableNegativeStartTime,fileNamePrefix="Buildings_8_Buildings_Controls_OBC_CDL_Logical_Sources_Validation_TimeTableNegativeStartTime",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Controls.OBC.CDL.Logical.Sources.Validation.TimeTableNegativeStartTime,fileNamePrefix="Buildings_8_Buildings_Controls_OBC_CDL_Logical_Sources_Validation_TimeTableNegativeStartTime",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 0.0009962/0.0009962, allocations: 115.3 kB / 15.34 MB, free: 0.5156 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00104/0.00104, allocations: 188.1 kB / 16.25 MB, free: 6.629 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.372/1.372, allocations: 205.1 MB / 222.1 MB, free: 4.727 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 1.588/1.588, allocations: 292.3 MB / 0.5486 GB, free: 13.65 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 0.001276/0.001276, allocations: 68.64 kB / 0.6711 GB, free: 26.34 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1926/0.1939, allocations: 114.5 MB / 0.783 GB, free: 13.78 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.CDL.Logical.Sources.Validation.TimeTableNegativeStartTime): time 0.002038/0.196, allocations: 0.9218 MB / 0.7839 GB, free: 12.86 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.001653/0.1976, allocations: 1.438 MB / 0.7853 GB, free: 11.4 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 6.66e-05/0.1977, allocations: 0 / 0.7853 GB, free: 11.4 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.0004516/0.1982, allocations: 191.5 kB / 0.7855 GB, free: 11.21 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 0.000129/0.1983, allocations: 111.7 kB / 0.7856 GB, free: 11.11 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.000815/0.1991, allocations: 337.9 kB / 0.7859 GB, free: 10.78 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.0007359/0.1999, allocations: 0.866 MB / 0.7868 GB, free: 9.914 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0001684/0.2001, allocations: 88.27 kB / 0.7869 GB, free: 9.824 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0003007/0.2004, allocations: 359.3 kB / 0.7872 GB, free: 9.473 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0003025/0.2007, allocations: 263.3 kB / 0.7874 GB, free: 9.215 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 9.828e-05/0.2008, allocations: 48 kB / 0.7875 GB, free: 9.168 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.000205/0.201, allocations: 104 kB / 0.7876 GB, free: 9.066 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.0003323/0.2013, allocations: 347.3 kB / 0.7879 GB, free: 8.727 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0002499/0.2016, allocations: 278.8 kB / 0.7882 GB, free: 8.453 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.0006785/0.2023, allocations: 0.9079 MB / 0.7891 GB, free: 7.543 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 4.708e-06/0.2023, allocations: 4 kB / 0.7891 GB, free: 7.539 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.403e-06/0.2023, allocations: 0 / 0.7891 GB, free: 7.539 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 6.903e-06/0.2023, allocations: 0 / 0.7891 GB, free: 7.539 MB / 0.6075 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 27 * Number of variables: 27 Notification: Performance of Generate backend data structure: time 0.001392/0.2037, allocations: 0.8879 MB / 0.7899 GB, free: 6.594 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 3.916e-05/0.2037, allocations: 12.02 kB / 0.79 GB, free: 6.582 MB / 0.6075 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.678e-05/0.2038, allocations: 42.75 kB / 0.79 GB, free: 6.531 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000177/0.204, allocations: 56.45 kB / 0.79 GB, free: 6.477 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006981/0.2047, allocations: 0.5409 MB / 0.7906 GB, free: 5.895 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.942e-05/0.2047, allocations: 20.61 kB / 0.7906 GB, free: 5.875 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001057/0.2048, allocations: 40.36 kB / 0.7906 GB, free: 5.836 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004478/0.2053, allocations: 311.6 kB / 0.7909 GB, free: 5.52 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.096e-05/0.2053, allocations: 3.938 kB / 0.7909 GB, free: 5.516 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.164e-05/0.2053, allocations: 0 / 0.7909 GB, free: 5.516 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.331e-06/0.2054, allocations: 4 kB / 0.7909 GB, free: 5.512 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0003107/0.2057, allocations: 227.8 kB / 0.7912 GB, free: 5.289 MB / 0.6075 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001713/0.2074, allocations: 1.18 MB / 0.7923 GB, free: 4.051 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005654/0.208, allocations: 459.7 kB / 0.7927 GB, free: 3.574 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002072/0.2082, allocations: 186.6 kB / 0.7929 GB, free: 3.383 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 1.274e-05/0.2082, allocations: 0 / 0.7929 GB, free: 3.383 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004207/0.2086, allocations: 347.5 kB / 0.7933 GB, free: 3.027 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=24): time 1.332e-06/0.2086, allocations: 0 / 0.7933 GB, free: 3.027 MB / 0.6075 GB Notification: Performance of matching and sorting (n=24): time 0.0009327/0.2096, allocations: 0.6296 MB / 0.7939 GB, free: 2.391 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.671e-05/0.2097, allocations: 118.8 kB / 0.794 GB, free: 2.25 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006109/0.2103, allocations: 0.5993 MB / 0.7946 GB, free: 1.641 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 8.877e-05/0.2104, allocations: 45.7 kB / 0.7946 GB, free: 1.59 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002011/0.2106, allocations: 214.4 kB / 0.7948 GB, free: 1.379 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 4.706e-05/0.2106, allocations: 63.34 kB / 0.7949 GB, free: 1.316 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002402/0.2109, allocations: 181.5 kB / 0.7951 GB, free: 1.133 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001259/0.211, allocations: 354.8 kB / 0.7954 GB, free: 0.7773 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001647/0.2112, allocations: 131.8 kB / 0.7955 GB, free: 0.6484 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007258/0.2119, allocations: 0.7181 MB / 0.7962 GB, free: 15.76 MB / 0.6231 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003053/0.2122, allocations: 296.6 kB / 0.7965 GB, free: 15.42 MB / 0.6231 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.945e-06/0.2123, allocations: 4.25 kB / 0.7965 GB, free: 15.42 MB / 0.6231 GB Notification: Performance of matching and sorting (n=36) (initialization): time 0.0005971/0.2129, allocations: 416.7 kB / 0.7969 GB, free: 15 MB / 0.6231 GB Notification: Performance of prepare postOptimizeDAE: time 1.984e-05/0.2129, allocations: 8 kB / 0.7969 GB, free: 15 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.354e-05/0.2129, allocations: 11.94 kB / 0.7969 GB, free: 14.98 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.639e-05/0.2129, allocations: 4 kB / 0.7969 GB, free: 14.98 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001614/0.2131, allocations: 36.28 kB / 0.797 GB, free: 14.95 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.26e-05/0.2131, allocations: 11.94 kB / 0.797 GB, free: 14.93 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001268/0.2144, allocations: 120.6 kB / 0.7971 GB, free: 14.82 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.248e-05/0.2144, allocations: 12 kB / 0.7971 GB, free: 14.8 MB / 0.6231 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 15 * Number of states: 0 () * Number of discrete variables: 33 ($whenCondition9,$whenCondition8,$whenCondition7,$whenCondition6,booTimTab.intTimTab.idx,$PRE.booTimTab.intTimTab.idx,booTimTab.intTimTab.y[2],$PRE.booTimTab.intTimTab.y[2],booTimTab.intTimTab.y[1],$PRE.booTimTab.intTimTab.y[1],booTimTab.y[2],booTimTab.y[1],$whenCondition5,booTimTabOneRow.intTimTab.idx,$PRE.booTimTabOneRow.intTimTab.idx,booTimTabOneRow.intTimTab.y[2],$PRE.booTimTabOneRow.intTimTab.y[2],booTimTabOneRow.intTimTab.y[1],$PRE.booTimTabOneRow.intTimTab.y[1],booTimTabOneRow.y[2],booTimTabOneRow.y[1],$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,booTimTabTwi.intTimTab.idx,$PRE.booTimTabTwi.intTimTab.idx,booTimTabTwi.intTimTab.y[2],$PRE.booTimTabTwi.intTimTab.y[2],booTimTabTwi.intTimTab.y[1],$PRE.booTimTabTwi.intTimTab.y[1],booTimTabTwi.y[2],booTimTabTwi.y[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (36): * Single equations (assignments): 36 * 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 0.0003331/0.2148, allocations: 265.6 kB / 0.7974 GB, free: 14.54 MB / 0.6231 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.918e-05/0.2148, allocations: 43.44 kB / 0.7974 GB, free: 14.5 MB / 0.6231 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 9.707e-05/0.2149, allocations: 59.3 kB / 0.7974 GB, free: 14.43 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.358e-06/0.215, allocations: 0 / 0.7974 GB, free: 14.43 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.977e-06/0.215, allocations: 4 kB / 0.7975 GB, free: 14.43 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.972e-06/0.215, allocations: 0 / 0.7975 GB, free: 14.43 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0004267/0.2154, allocations: 405.3 kB / 0.7978 GB, free: 13.98 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.849e-06/0.2154, allocations: 7.984 kB / 0.7978 GB, free: 13.97 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 2.473e-05/0.2155, allocations: 4 kB / 0.7979 GB, free: 13.97 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.459e-06/0.2155, allocations: 7.938 kB / 0.7979 GB, free: 13.96 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.585e-05/0.2155, allocations: 15.88 kB / 0.7979 GB, free: 13.95 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.977e-06/0.2155, allocations: 3.984 kB / 0.7979 GB, free: 13.94 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.433e-06/0.2155, allocations: 0 / 0.7979 GB, free: 13.94 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006913/0.2162, allocations: 0.5097 MB / 0.7984 GB, free: 13.41 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 9.794e-05/0.2163, allocations: 124.6 kB / 0.7985 GB, free: 13.27 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.67e-05/0.2164, allocations: 15.92 kB / 0.7985 GB, free: 13.25 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001526/0.2166, allocations: 11.98 kB / 0.7985 GB, free: 13.24 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.922e-05/0.2167, allocations: 31.91 kB / 0.7986 GB, free: 13.21 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.486e-05/0.2167, allocations: 19.98 kB / 0.7986 GB, free: 13.19 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0004828/0.2172, allocations: 435.1 kB / 0.799 GB, free: 12.76 MB / 0.6231 GB Notification: Performance of sort global known variables: time 1.2e-07/0.2172, allocations: 0 / 0.799 GB, free: 12.76 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.0004482/0.2176, allocations: 103.9 kB / 0.7991 GB, free: 12.66 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 0 () * Number of discrete variables: 24 ($whenCondition9,$whenCondition8,$whenCondition7,$whenCondition6,booTimTab.y[1],booTimTab.y[2],booTimTab.intTimTab.y[1],booTimTab.intTimTab.y[2],booTimTab.intTimTab.idx,$whenCondition5,booTimTabOneRow.y[1],booTimTabOneRow.y[2],booTimTabOneRow.intTimTab.y[1],booTimTabOneRow.intTimTab.y[2],booTimTabOneRow.intTimTab.idx,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,booTimTabTwi.y[1],booTimTabTwi.y[2],booTimTabTwi.intTimTab.y[1],booTimTabTwi.intTimTab.y[2],booTimTabTwi.intTimTab.idx) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (24): * Single equations (assignments): 15 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 9 * 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 0.0009983/0.2186, allocations: 1.102 MB / 0.8002 GB, free: 11.53 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.0005447/0.2192, allocations: 371.6 kB / 0.8005 GB, free: 11.16 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 3.967e-06/0.2192, allocations: 4 kB / 0.8005 GB, free: 11.16 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0002218/0.2194, allocations: 187.8 kB / 0.8007 GB, free: 10.98 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003013/0.2198, allocations: 38.09 kB / 0.8007 GB, free: 10.94 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004982/0.2247, allocations: 4.501 MB / 0.8051 GB, free: 6.254 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004412/0.2252, allocations: 0.8388 MB / 0.8059 GB, free: 5.391 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.0002332/0.2254, allocations: 97.55 kB / 0.806 GB, free: 5.297 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000181/0.2256, allocations: 135.4 kB / 0.8062 GB, free: 5.164 MB / 0.6231 GB Notification: Performance of SimCode: time 4e-07/0.2256, allocations: 0 / 0.8062 GB, free: 5.164 MB / 0.6231 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 1.362/1.587, allocations: 11.39 MB / 0.8173 GB, free: 10.09 MB / 0.6387 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002821/1.588, allocations: 244.8 kB / 0.8175 GB, free: 9.832 MB / 0.6387 GB Notification: Performance of buildModelFMU: Generate platform static: time 1.943/3.531, allocations: 2.969 kB / 0.8175 GB, free: 9.832 MB / 0.6387 GB (rm -f Buildings_8_Buildings.Controls.OBC.CDL.Logical.Sources.Validation.TimeTableNegativeStartTime.pipe ; mkfifo Buildings_8_Buildings.Controls.OBC.CDL.Logical.Sources.Validation.TimeTableNegativeStartTime.pipe ; head -c 1048576 < Buildings_8_Buildings.Controls.OBC.CDL.Logical.Sources.Validation.TimeTableNegativeStartTime.pipe >> ../files/Buildings_8_Buildings.Controls.OBC.CDL.Logical.Sources.Validation.TimeTableNegativeStartTime.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_Buildings_8_Buildings_Controls_OBC_CDL_Logical_Sources_Validation_TimeTableNegativeStartTime_fmu --startTime=-5 --stopTime=10 --timeout=50 --tolerance=1e-06 Buildings_8_Buildings_Controls_OBC_CDL_Logical_Sources_Validation_TimeTableNegativeStartTime.fmu > Buildings_8_Buildings.Controls.OBC.CDL.Logical.Sources.Validation.TimeTableNegativeStartTime.pipe 2>&1)