Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.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 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo)
Running command: translateModel(Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve")
translateModel(Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.396/1.396, allocations: 252 MB / 268 MB, free: 10.86 MB / 218.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.0009935/0.0009934, allocations: 170.3 kB / 327.6 MB, free: 2.09 MB / 250.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.602/1.602, allocations: 205.4 MB / 0.5786 GB, free: 20.12 MB / 426.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0007585/0.0007585, allocations: 92.58 kB / 0.6832 GB, free: 12.77 MB / 0.5105 GB
Notification: Performance of FrontEnd - loaded program: time 0.0002885/0.0002885, allocations: 10.06 kB / 0.7977 GB, free: 135.1 MB / 0.6042 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1778/0.1781, allocations: 106.3 MB / 0.9015 GB, free: 63.43 MB / 0.6042 GB
Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve): time 0.004345/0.1826, allocations: 3.13 MB / 0.9046 GB, free: 60.27 MB / 0.6042 GB
Notification: Performance of NFInst.instExpressions: time 0.003377/0.186, allocations: 1.279 MB / 0.9058 GB, free: 58.99 MB / 0.6042 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.00117/0.1872, allocations: 15.94 kB / 0.9058 GB, free: 58.97 MB / 0.6042 GB
Notification: Performance of NFTyping.typeComponents: time 0.0006412/0.1879, allocations: 95.16 kB / 0.9059 GB, free: 58.88 MB / 0.6042 GB
Notification: Performance of NFTyping.typeBindings: time 0.0009396/0.1888, allocations: 79.31 kB / 0.906 GB, free: 58.8 MB / 0.6042 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0009118/0.1898, allocations: 319.7 kB / 0.9063 GB, free: 58.49 MB / 0.6042 GB
Notification: Performance of NFFlatten.flatten: time 0.0008924/0.1907, allocations: 0.8604 MB / 0.9072 GB, free: 57.62 MB / 0.6042 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0006811/0.1914, allocations: 0.4996 MB / 0.9076 GB, free: 57.11 MB / 0.6042 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0002665/0.1916, allocations: 202.7 kB / 0.9078 GB, free: 56.91 MB / 0.6042 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0002283/0.1919, allocations: 246.2 kB / 0.9081 GB, free: 56.66 MB / 0.6042 GB
Notification: Performance of NFPackage.collectConstants: time 5.903e-05/0.1919, allocations: 23.94 kB / 0.9081 GB, free: 56.64 MB / 0.6042 GB
Notification: Performance of NFFlatten.collectFunctions: time 5.246e-05/0.192, allocations: 24 kB / 0.9081 GB, free: 56.62 MB / 0.6042 GB
Notification: Performance of NFScalarize.scalarize: time 9.386e-05/0.1921, allocations: 115.3 kB / 0.9082 GB, free: 56.5 MB / 0.6042 GB
Notification: Performance of NFVerifyModel.verify: time 0.0002111/0.1923, allocations: 327.5 kB / 0.9085 GB, free: 56.18 MB / 0.6042 GB
Notification: Performance of NFConvertDAE.convert: time 0.0006745/0.193, allocations: 1.106 MB / 0.9096 GB, free: 55.07 MB / 0.6042 GB
Notification: Performance of FrontEnd - DAE generated: time 6.442e-06/0.193, allocations: 7.938 kB / 0.9096 GB, free: 55.06 MB / 0.6042 GB
Notification: Performance of FrontEnd: time 2.355e-06/0.193, allocations: 0 / 0.9096 GB, free: 55.06 MB / 0.6042 GB
Notification: Performance of Transformations before backend: time 1.181e-05/0.1931, allocations: 0 / 0.9096 GB, free: 55.06 MB / 0.6042 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 175
 * Number of variables: 175
Notification: Performance of Generate backend data structure: time 0.001576/0.1946, allocations: 0.9951 MB / 0.9106 GB, free: 54.01 MB / 0.6042 GB
Notification: Performance of prepare preOptimizeDAE: time 4.375e-05/0.1947, allocations: 12.03 kB / 0.9106 GB, free: 54 MB / 0.6042 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001287/0.1948, allocations: 91.81 kB / 0.9107 GB, free: 53.91 MB / 0.6042 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0007683/0.1956, allocations: 0.6048 MB / 0.9113 GB, free: 53.27 MB / 0.6042 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.706e-05/0.1957, allocations: 61.94 kB / 0.9114 GB, free: 53.21 MB / 0.6042 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 7.679e-05/0.1957, allocations: 64 kB / 0.9114 GB, free: 53.14 MB / 0.6042 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001134/0.1969, allocations: 0.7088 MB / 0.9121 GB, free: 52.42 MB / 0.6042 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.614e-05/0.1969, allocations: 4 kB / 0.9121 GB, free: 52.41 MB / 0.6042 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.325e-05/0.197, allocations: 28 kB / 0.9121 GB, free: 52.39 MB / 0.6042 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.651e-05/0.197, allocations: 20 kB / 0.9122 GB, free: 52.37 MB / 0.6042 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009765/0.198, allocations: 0.5309 MB / 0.9127 GB, free: 51.84 MB / 0.6042 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002925/0.2009, allocations: 2.329 MB / 0.9149 GB, free: 49.4 MB / 0.6042 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0008873/0.2018, allocations: 0.5505 MB / 0.9155 GB, free: 48.81 MB / 0.6042 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0003954/0.2022, allocations: 215.6 kB / 0.9157 GB, free: 48.6 MB / 0.6042 GB
Notification: Performance of preOpt evalFunc (simulation): time 3.518e-05/0.2023, allocations: 4 kB / 0.9157 GB, free: 48.59 MB / 0.6042 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004946/0.2028, allocations: 279.4 kB / 0.916 GB, free: 48.29 MB / 0.6042 GB
Notification: Performance of pre-optimization done (n=39): time 2.554e-06/0.2028, allocations: 0 / 0.916 GB, free: 48.29 MB / 0.6042 GB
Notification: Performance of matching and sorting (n=39): time 0.001033/0.2038, allocations: 0.5133 MB / 0.9165 GB, free: 47.77 MB / 0.6042 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 5.411e-05/0.2039, allocations: 166.2 kB / 0.9166 GB, free: 47.57 MB / 0.6042 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004544/0.2043, allocations: 0.5186 MB / 0.9171 GB, free: 47.05 MB / 0.6042 GB
Notification: Performance of collectPreVariables (initialization): time 2.732e-05/0.2044, allocations: 37.7 kB / 0.9172 GB, free: 47 MB / 0.6042 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0001804/0.2046, allocations: 399.4 kB / 0.9175 GB, free: 46.61 MB / 0.6042 GB
Notification: Performance of collectInitialBindings (initialization): time 6.297e-05/0.2046, allocations: 130.1 kB / 0.9177 GB, free: 46.48 MB / 0.6042 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 2.1e-05/0.2047, allocations: 12 kB / 0.9177 GB, free: 46.47 MB / 0.6042 GB
Notification: Performance of setup shared object (initialization): time 0.0001072/0.2048, allocations: 374.8 kB / 0.918 GB, free: 46.09 MB / 0.6042 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003259/0.2051, allocations: 157 kB / 0.9182 GB, free: 45.94 MB / 0.6042 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003672/0.2055, allocations: 329.7 kB / 0.9185 GB, free: 45.55 MB / 0.6042 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0006693/0.2062, allocations: 461.2 kB / 0.9189 GB, free: 45.04 MB / 0.6042 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.685e-06/0.2062, allocations: 0 / 0.9189 GB, free: 45.04 MB / 0.6042 GB
Notification: Performance of matching and sorting (n=64) (initialization): time 0.0008512/0.207, allocations: 0.5424 MB / 0.9195 GB, free: 44.5 MB / 0.6042 GB
Notification: Performance of prepare postOptimizeDAE: time 7.67e-05/0.2071, allocations: 204.5 kB / 0.9197 GB, free: 44.24 MB / 0.6042 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.225e-06/0.2071, allocations: 8 kB / 0.9197 GB, free: 44.23 MB / 0.6042 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.895e-05/0.2072, allocations: 8 kB / 0.9197 GB, free: 44.22 MB / 0.6042 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004189/0.2076, allocations: 119.8 kB / 0.9198 GB, free: 44.11 MB / 0.6042 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.013e-05/0.2076, allocations: 4 kB / 0.9198 GB, free: 44.1 MB / 0.6042 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003358/0.208, allocations: 87.33 kB / 0.9199 GB, free: 44.02 MB / 0.6042 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.987e-05/0.208, allocations: 20 kB / 0.9199 GB, free: 44 MB / 0.6042 GB
Notification: Performance of prepare postOptimizeDAE: time 6.622e-06/0.208, allocations: 6.656 kB / 0.9199 GB, free: 43.99 MB / 0.6042 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0006349/0.2086, allocations: 454 kB / 0.9203 GB, free: 43.55 MB / 0.6042 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.358e-06/0.2087, allocations: 4 kB / 0.9203 GB, free: 43.55 MB / 0.6042 GB
Notification: Performance of postOpt tearingSystem (initialization): time 6.142e-06/0.2087, allocations: 8 kB / 0.9204 GB, free: 43.54 MB / 0.6042 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003587/0.209, allocations: 116.2 kB / 0.9205 GB, free: 43.43 MB / 0.6042 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.382e-06/0.209, allocations: 7.938 kB / 0.9205 GB, free: 43.42 MB / 0.6042 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002685/0.2093, allocations: 63.56 kB / 0.9205 GB, free: 43.36 MB / 0.6042 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.483e-05/0.2094, allocations: 20 kB / 0.9206 GB, free: 43.34 MB / 0.6042 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 17
 * Number of states: 0 ()
 * Number of discrete variables: 8 ($whenCondition3,$whenCondition1,$whenCondition2,supFanSta.y,$PRE.supFanSta.pulseStart,supFanSta.pulseStart,supSig1.conTSup.cheYMinMax.y,supSig.conTSup.cheYMinMax.y)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (64):
 * Single equations (assignments): 64
 * 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 0.0002512/0.2096, allocations: 296.1 kB / 0.9208 GB, free: 43.04 MB / 0.6042 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 5.317e-05/0.2097, allocations: 67.19 kB / 0.9209 GB, free: 42.97 MB / 0.6042 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0007686/0.2104, allocations: 428.3 kB / 0.9213 GB, free: 42.55 MB / 0.6042 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.32e-06/0.2105, allocations: 4 kB / 0.9213 GB, free: 42.54 MB / 0.6042 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 4.038e-06/0.2105, allocations: 0 / 0.9213 GB, free: 42.54 MB / 0.6042 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.45e-06/0.2105, allocations: 0 / 0.9213 GB, free: 42.54 MB / 0.6042 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001419/0.2119, allocations: 1.142 MB / 0.9224 GB, free: 41.34 MB / 0.6042 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.555e-06/0.2119, allocations: 4 kB / 0.9224 GB, free: 41.34 MB / 0.6042 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003284/0.2123, allocations: 71.95 kB / 0.9225 GB, free: 41.27 MB / 0.6042 GB
Notification: Performance of postOpt tearingSystem (simulation): time 4.188e-06/0.2123, allocations: 7.875 kB / 0.9225 GB, free: 41.26 MB / 0.6042 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.42e-05/0.2123, allocations: 11.98 kB / 0.9225 GB, free: 41.25 MB / 0.6042 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.936e-06/0.2123, allocations: 0 / 0.9225 GB, free: 41.25 MB / 0.6042 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.112e-06/0.2123, allocations: 0 / 0.9225 GB, free: 41.25 MB / 0.6042 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001062/0.2134, allocations: 0.6709 MB / 0.9232 GB, free: 40.56 MB / 0.6042 GB
Notification: Performance of postOpt removeConstants (simulation): time 7.347e-05/0.2135, allocations: 132.4 kB / 0.9233 GB, free: 40.41 MB / 0.6042 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.214e-05/0.2135, allocations: 8 kB / 0.9233 GB, free: 40.41 MB / 0.6042 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002763/0.2138, allocations: 36.03 kB / 0.9233 GB, free: 40.37 MB / 0.6042 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 6.706e-05/0.2139, allocations: 28.02 kB / 0.9234 GB, free: 40.34 MB / 0.6042 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.108e-05/0.2139, allocations: 16 kB / 0.9234 GB, free: 40.33 MB / 0.6042 GB
Notification: Performance of sorting global known variables: time 0.0003196/0.2142, allocations: 362.8 kB / 0.9237 GB, free: 39.98 MB / 0.6042 GB
Notification: Performance of sort global known variables: time 1.51e-07/0.2142, allocations: 0 / 0.9237 GB, free: 39.98 MB / 0.6042 GB
Notification: Performance of remove unused functions: time 0.0005732/0.2148, allocations: 250.7 kB / 0.924 GB, free: 39.73 MB / 0.6042 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 2 (supSig.conTSup.I.y,supSig1.conTSup.I.y)
 * Number of discrete variables: 5 (supFanSta.y,$whenCondition3,$whenCondition2,$whenCondition1,supFanSta.pulseStart)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (39):
 * Single equations (assignments): 38
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 1
 * 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 0.0001128/0.2149, allocations: 113.6 kB / 0.9241 GB, free: 39.61 MB / 0.6042 GB
Notification: Performance of simCode: created initialization part: time 0.001052/0.216, allocations: 0.6273 MB / 0.9247 GB, free: 38.98 MB / 0.6042 GB
Notification: Performance of simCode: created event and clocks part: time 2.404e-06/0.216, allocations: 0 / 0.9247 GB, free: 38.98 MB / 0.6042 GB
Notification: Performance of simCode: created simulation system equations: time 0.0003185/0.2163, allocations: 183.8 kB / 0.9249 GB, free: 38.8 MB / 0.6042 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0007292/0.2171, allocations: 155.2 kB / 0.925 GB, free: 38.66 MB / 0.6042 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001501/0.2186, allocations: 1.405 MB / 0.9264 GB, free: 37.22 MB / 0.6042 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002408/0.2188, allocations: 0.9072 MB / 0.9273 GB, free: 36.29 MB / 0.6042 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001356/0.219, allocations: 55.42 kB / 0.9273 GB, free: 36.23 MB / 0.6042 GB
Notification: Performance of SimCode: time 4.51e-07/0.219, allocations: 0 / 0.9273 GB, free: 36.23 MB / 0.6042 GB
Notification: Performance of Templates: time 0.008319/0.2273, allocations: 7.813 MB / 0.935 GB, free: 28.46 MB / 0.6042 GB
make -j1 -f Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve.makefile
(rm -f Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve.sim & ./Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.Validation.SupplySignals_Valve.pipe 2>&1)