Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.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 7.0.3-maint.7.0.x/package.mo", uses=false)
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)
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: translateModel(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7,tolerance=1e-06,outputFormat="empty",numberOfIntervals=172800,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7")
translateModel(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7,tolerance=1e-06,outputFormat="empty",numberOfIntervals=172800,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009268/0.0009268, 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 0.0009103/0.0009103, allocations: 190.7 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 1.137/1.137, allocations: 205.1 MB / 222.1 MB, free: 4.684 MB / 174.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.296/1.296, allocations: 251.6 MB / 0.5089 GB, free: 3.27 MB / 414.1 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 0.001221/0.001221, allocations: 67.91 kB / 0.6217 GB, free: 1.887 MB / 0.5137 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3699/0.3711, allocations: 104.7 MB / 0.724 GB, free: 13.1 MB / 0.545 GB
Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7): time 0.1312/0.5024, allocations: 155.7 MB / 0.876 GB, free: 0.8086 MB / 0.6856 GB
Notification: Performance of NFInst.instExpressions: time 0.0209/0.5233, allocations: 21.68 MB / 0.8972 GB, free: 11.06 MB / 0.7169 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001786/0.5251, allocations: 59.62 kB / 0.8973 GB, free: 11 MB / 0.7169 GB
Notification: Performance of NFTyping.typeComponents: time 0.001479/0.5267, allocations: 1.333 MB / 0.8986 GB, free: 9.668 MB / 0.7169 GB
Notification: Performance of NFTyping.typeBindings: time 0.001345/0.528, allocations: 0.9577 MB / 0.8995 GB, free: 8.707 MB / 0.7169 GB
Notification: Performance of NFTyping.typeClassSections: time 0.001191/0.5292, allocations: 0.5467 MB / 0.9 GB, free: 8.168 MB / 0.7169 GB
Notification: Performance of NFFlatten.flatten: time 0.001329/0.5306, allocations: 1.681 MB / 0.9017 GB, free: 6.484 MB / 0.7169 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.001041/0.5316, allocations: 0.9667 MB / 0.9026 GB, free: 5.496 MB / 0.7169 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.000787/0.5324, allocations: 0.7436 MB / 0.9033 GB, free: 4.75 MB / 0.7169 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0009857/0.5334, allocations: 1.238 MB / 0.9046 GB, free: 3.508 MB / 0.7169 GB
Notification: Performance of NFPackage.collectConstants: time 0.0001115/0.5335, allocations: 92 kB / 0.9046 GB, free: 3.418 MB / 0.7169 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0002592/0.5338, allocations: 139.9 kB / 0.9048 GB, free: 3.281 MB / 0.7169 GB
Notification: Performance of NFScalarize.scalarize: time 0.000292/0.5341, allocations: 436.4 kB / 0.9052 GB, free: 2.855 MB / 0.7169 GB
Notification: Performance of NFVerifyModel.verify: time 0.0004239/0.5345, allocations: 0.6559 MB / 0.9058 GB, free: 2.195 MB / 0.7169 GB
Notification: Performance of NFConvertDAE.convert: time 0.00115/0.5357, allocations: 1.572 MB / 0.9074 GB, free: 0.6172 MB / 0.7169 GB
Notification: Performance of FrontEnd - DAE generated: time 4.328e-06/0.5357, allocations: 0 / 0.9074 GB, free: 0.6172 MB / 0.7169 GB
Notification: Performance of FrontEnd: time 1.293e-06/0.5357, allocations: 0 / 0.9074 GB, free: 0.6172 MB / 0.7169 GB
Notification: Performance of Transformations before backend: time 1.299e-05/0.5357, allocations: 0 / 0.9074 GB, free: 0.6172 MB / 0.7169 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 156
 * Number of variables: 156
Notification: Performance of Generate backend data structure: time 0.2959/0.8316, allocations: 1.897 MB / 0.9092 GB, free: 185.4 MB / 0.7169 GB
Notification: Performance of prepare preOptimizeDAE: time 3.554e-05/0.8317, allocations: 9.094 kB / 0.9092 GB, free: 185.4 MB / 0.7169 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000266/0.8319, allocations: 184.4 kB / 0.9094 GB, free: 185.3 MB / 0.7169 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009744/0.8329, allocations: 0.8754 MB / 0.9103 GB, free: 184.8 MB / 0.7169 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001143/0.833, allocations: 85.3 kB / 0.9103 GB, free: 184.7 MB / 0.7169 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 9.268e-05/0.8331, allocations: 69.38 kB / 0.9104 GB, free: 184.7 MB / 0.7169 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001162/0.8343, allocations: 0.7166 MB / 0.9111 GB, free: 184.4 MB / 0.7169 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.174e-05/0.8343, allocations: 9.125 kB / 0.9111 GB, free: 184.4 MB / 0.7169 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.399e-05/0.8344, allocations: 27.33 kB / 0.9111 GB, free: 184.4 MB / 0.7169 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.457e-05/0.8344, allocations: 15.22 kB / 0.9112 GB, free: 184.4 MB / 0.7169 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001038/0.8355, allocations: 0.538 MB / 0.9117 GB, free: 184.2 MB / 0.7169 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 0.003746/0.8392, allocations: 3.616 MB / 0.9152 GB, free: 181.7 MB / 0.7169 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.001173/0.8404, allocations: 0.6108 MB / 0.9158 GB, free: 181.4 MB / 0.7169 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0006471/0.8411, allocations: 377 kB / 0.9162 GB, free: 181.3 MB / 0.7169 GB
Notification: Performance of preOpt evalFunc (simulation): time 4.842e-05/0.8411, allocations: 7.953 kB / 0.9162 GB, free: 181.3 MB / 0.7169 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0006934/0.8418, allocations: 384.4 kB / 0.9165 GB, free: 181.2 MB / 0.7169 GB
Notification: Performance of pre-optimization done (n=65): time 2.194e-06/0.8418, allocations: 0 / 0.9165 GB, free: 181.2 MB / 0.7169 GB
Notification: Performance of matching and sorting (n=65): time 0.004511/0.8463, allocations: 1.777 MB / 0.9183 GB, free: 180.5 MB / 0.7169 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.586e-05/0.8464, allocations: 60.48 kB / 0.9183 GB, free: 180.4 MB / 0.7169 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002445/0.8488, allocations: 2.253 MB / 0.9205 GB, free: 179.6 MB / 0.7169 GB
Notification: Performance of collectPreVariables (initialization): time 4.239e-05/0.8489, allocations: 45.91 kB / 0.9206 GB, free: 179.5 MB / 0.7169 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0003716/0.8493, allocations: 0.7221 MB / 0.9213 GB, free: 178.9 MB / 0.7169 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0001091/0.8494, allocations: 208.8 kB / 0.9215 GB, free: 178.7 MB / 0.7169 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001675/0.8496, allocations: 127.3 kB / 0.9216 GB, free: 178.6 MB / 0.7169 GB
Notification: Performance of setup shared object (initialization): time 4.965e-05/0.8496, allocations: 337 kB / 0.9219 GB, free: 178.3 MB / 0.7169 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004908/0.8501, allocations: 272.6 kB / 0.9222 GB, free: 178.2 MB / 0.7169 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.000527/0.8507, allocations: 428.5 kB / 0.9226 GB, free: 177.9 MB / 0.7169 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001059/0.8517, allocations: 0.6635 MB / 0.9232 GB, free: 177.4 MB / 0.7169 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.928e-06/0.8517, allocations: 5.406 kB / 0.9232 GB, free: 177.4 MB / 0.7169 GB
Notification: Performance of matching and sorting (n=93) (initialization): time 0.001742/0.8535, allocations: 1.118 MB / 0.9243 GB, free: 176.9 MB / 0.7169 GB
Notification: Performance of prepare postOptimizeDAE: time 1.727e-05/0.8535, allocations: 5.938 kB / 0.9243 GB, free: 176.9 MB / 0.7169 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.484e-06/0.8535, allocations: 7.531 kB / 0.9244 GB, free: 176.9 MB / 0.7169 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0006444/0.8542, allocations: 274.2 kB / 0.9246 GB, free: 176.7 MB / 0.7169 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003452/0.8545, allocations: 120.2 kB / 0.9247 GB, free: 176.7 MB / 0.7169 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003724/0.8583, allocations: 3.735 MB / 0.9284 GB, free: 173.2 MB / 0.7169 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004854/0.8588, allocations: 99.31 kB / 0.9285 GB, free: 173.1 MB / 0.7169 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.251e-05/0.8588, allocations: 28 kB / 0.9285 GB, free: 173.1 MB / 0.7169 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 17
 * Number of states: 0 ()
 * Number of discrete variables: 25 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition6,$PRE.intGai.nextTimeEvent,$whenCondition5,$PRE.reference.nextTimeEvent,$whenCondition4,$PRE.setTemp.nextTimeEvent,$whenCondition3,$whenCondition1,mean.y,$PRE.mean.y,assEqu.satisfied,$PRE.assEqu.satisfied,reference.nextTimeEventScaled,$PRE.reference.nextTimeEventScaled,reference.nextTimeEvent,$whenCondition2,setTemp.nextTimeEventScaled,$PRE.setTemp.nextTimeEventScaled,setTemp.nextTimeEvent,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,intGai.nextTimeEvent,conHeaCoo.I.trigger_internal)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (67):
 * Single equations (assignments): 66
 * 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
   {(2,25)}
Notification: Performance of prepare postOptimizeDAE: time 0.0003776/0.8592, allocations: 464 kB / 0.9289 GB, free: 172.6 MB / 0.7169 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001166/0.8593, allocations: 161.9 kB / 0.9291 GB, free: 172.4 MB / 0.7169 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001955/0.8595, allocations: 187.6 kB / 0.9293 GB, free: 172.2 MB / 0.7169 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.747e-06/0.8595, allocations: 4 kB / 0.9293 GB, free: 172.2 MB / 0.7169 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 9.007e-06/0.8595, allocations: 8 kB / 0.9293 GB, free: 172.2 MB / 0.7169 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.094e-06/0.8595, allocations: 3.984 kB / 0.9293 GB, free: 172.2 MB / 0.7169 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002448/0.862, allocations: 2.035 MB / 0.9313 GB, free: 170.1 MB / 0.7169 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.635e-06/0.862, allocations: 0 / 0.9313 GB, free: 170.1 MB / 0.7169 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002254/0.8622, allocations: 59.91 kB / 0.9313 GB, free: 170.1 MB / 0.7169 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.000582/0.8628, allocations: 281.3 kB / 0.9316 GB, free: 169.8 MB / 0.7169 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.878e-05/0.8629, allocations: 19.98 kB / 0.9316 GB, free: 169.8 MB / 0.7169 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.003885/0.8668, allocations: 5.245 MB / 0.9367 GB, free: 164.3 MB / 0.7169 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.273e-06/0.8668, allocations: 0 / 0.9367 GB, free: 164.3 MB / 0.7169 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001876/0.8687, allocations: 1.4 MB / 0.9381 GB, free: 162.9 MB / 0.7169 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0002232/0.8689, allocations: 267 kB / 0.9384 GB, free: 162.6 MB / 0.7169 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001098/0.869, allocations: 19.94 kB / 0.9384 GB, free: 162.6 MB / 0.7169 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003708/0.8694, allocations: 43.95 kB / 0.9384 GB, free: 162.5 MB / 0.7169 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001216/0.8695, allocations: 67.38 kB / 0.9385 GB, free: 162.4 MB / 0.7169 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.012e-05/0.8696, allocations: 27.98 kB / 0.9385 GB, free: 162.4 MB / 0.7169 GB
Notification: Performance of sorting global known variables: time 0.001139/0.8707, allocations: 1.627 MB / 0.9401 GB, free: 160.8 MB / 0.7169 GB
Notification: Performance of sort global known variables: time 1.3e-07/0.8707, allocations: 4 kB / 0.9401 GB, free: 160.8 MB / 0.7169 GB
Notification: Performance of remove unused functions: time 0.001003/0.8717, allocations: 271.5 kB / 0.9404 GB, free: 160.5 MB / 0.7169 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 5 (thermalZoneTwoElements.extWallRC.thermCapExt[1].T,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,conHeaCoo.I.y,assEqu.diff,mean.x)
 * Number of discrete variables: 15 ($whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,intGai.nextTimeEvent,intGai.nextTimeEventScaled,reference.nextTimeEvent,reference.nextTimeEventScaled,setTemp.nextTimeEvent,setTemp.nextTimeEventScaled,assEqu.satisfied,assEqu.nFai,mean.y)
 * Number of discrete states: 9 (intGai.nextTimeEvent,reference.nextTimeEvent,setTemp.nextTimeEvent,mean.x,assEqu.satisfied,assEqu.nFai,setTemp.nextTimeEventScaled,reference.nextTimeEventScaled,intGai.nextTimeEventScaled)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (39):
 * Single equations (assignments): 29
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 8
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 2
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 1 system
   {(1,3,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(2,22)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.001134/0.8729, allocations: 488.6 kB / 0.9408 GB, free: 160.2 MB / 0.7169 GB
Notification: Performance of simCode: created initialization part: time 0.001849/0.8747, allocations: 0.9588 MB / 0.9418 GB, free: 159.3 MB / 0.7169 GB
Notification: Performance of simCode: created event and clocks part: time 3.777e-06/0.8748, allocations: 0 / 0.9418 GB, free: 159.3 MB / 0.7169 GB
Notification: Performance of simCode: created simulation system equations: time 0.0009075/0.8757, allocations: 0.6827 MB / 0.9424 GB, free: 158.6 MB / 0.7169 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0013/0.877, allocations: 288 kB / 0.9427 GB, free: 158.3 MB / 0.7169 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003384/0.8804, allocations: 3.54 MB / 0.9462 GB, free: 154.8 MB / 0.7169 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000518/0.8809, allocations: 1.311 MB / 0.9474 GB, free: 153.4 MB / 0.7169 GB
Notification: Performance of simCode: alias equations: time 0.0003092/0.8812, allocations: 126.3 kB / 0.9476 GB, free: 153.3 MB / 0.7169 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001111/0.8813, allocations: 55.44 kB / 0.9476 GB, free: 153.2 MB / 0.7169 GB
Notification: Performance of SimCode: time 4.51e-07/0.8813, allocations: 0 / 0.9476 GB, free: 153.2 MB / 0.7169 GB
Notification: Performance of Templates: time 0.01754/0.8989, allocations: 14.68 MB / 0.962 GB, free: 138.7 MB / 0.7169 GB
make -j1 -f Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.makefile
(rm -f Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe >> ../files/Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.sim & ./Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7  -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe 2>&1)