Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6.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 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo", uses=false)
Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo)
Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+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(IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6,fileNamePrefix="IBPSA_latest_IBPSA_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase6",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6,fileNamePrefix="IBPSA_latest_IBPSA_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase6",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 0.001531/0.001531, allocations: 104.7 kB / 16.4 MB, free: 6.461 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001779/0.001779, allocations: 193.2 kB / 17.34 MB, free: 5.715 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.314/1.314, allocations: 222.9 MB / 241 MB, free: 15.1 MB / 206.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7565/0.7565, allocations: 122.9 MB / 414.1 MB, free: 15.84 MB / 334.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.00125/0.00125, allocations: 64.09 kB / 0.5679 GB, free: 28.84 MB / 446.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.119/0.1202, allocations: 77.94 MB / 0.6441 GB, free: 9.559 MB / 494.1 MB
Notification: Performance of NFInst.instantiate(IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6): time 0.4492/0.5695, allocations: 157 MB / 0.7974 GB, free: 12.64 MB / 0.5919 GB
Notification: Performance of NFInst.instExpressions: time 0.02089/0.5904, allocations: 21.89 MB / 0.8187 GB, free: 8.734 MB / 0.5919 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.002145/0.5926, allocations: 57.34 kB / 0.8188 GB, free: 8.715 MB / 0.5919 GB
Notification: Performance of NFTyping.typeComponents: time 0.001572/0.5942, allocations: 1.344 MB / 0.8201 GB, free: 8.066 MB / 0.5919 GB
Notification: Performance of NFTyping.typeBindings: time 0.001587/0.5958, allocations: 0.9839 MB / 0.8211 GB, free: 7.551 MB / 0.5919 GB
Notification: Performance of NFTyping.typeClassSections: time 0.001273/0.5971, allocations: 0.5064 MB / 0.8216 GB, free: 7.195 MB / 0.5919 GB
Notification: Performance of NFFlatten.flatten: time 0.001429/0.5985, allocations: 1.439 MB / 0.823 GB, free: 6.426 MB / 0.5919 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0008337/0.5994, allocations: 0.7813 MB / 0.8237 GB, free: 5.953 MB / 0.5919 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0006888/0.6001, allocations: 0.6541 MB / 0.8244 GB, free: 5.637 MB / 0.5919 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.001071/0.6012, allocations: 1.1 MB / 0.8254 GB, free: 5.188 MB / 0.5919 GB
Notification: Performance of NFPackage.collectConstants: time 0.0001155/0.6013, allocations: 72.62 kB / 0.8255 GB, free: 5.188 MB / 0.5919 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0002747/0.6016, allocations: 120.9 kB / 0.8256 GB, free: 5.168 MB / 0.5919 GB
Notification: Performance of NFScalarize.scalarize: time 0.0002642/0.6019, allocations: 370.7 kB / 0.826 GB, free: 4.941 MB / 0.5919 GB
Notification: Performance of NFVerifyModel.verify: time 0.0004269/0.6023, allocations: 0.5582 MB / 0.8265 GB, free: 4.527 MB / 0.5919 GB
Notification: Performance of NFConvertDAE.convert: time 0.001382/0.6037, allocations: 1.383 MB / 0.8279 GB, free: 3.621 MB / 0.5919 GB
Notification: Performance of FrontEnd - DAE generated: time 4.218e-06/0.6037, allocations: 0 / 0.8279 GB, free: 3.621 MB / 0.5919 GB
Notification: Performance of FrontEnd: time 1.723e-06/0.6037, allocations: 0 / 0.8279 GB, free: 3.621 MB / 0.5919 GB
Notification: Performance of Transformations before backend: time 2.555e-05/0.6037, allocations: 0 / 0.8279 GB, free: 3.621 MB / 0.5919 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 121
 * Number of variables: 121
Notification: Performance of Generate backend data structure: time 0.00251/0.6063, allocations: 1.73 MB / 0.8296 GB, free: 2.27 MB / 0.5919 GB
Notification: Performance of prepare preOptimizeDAE: time 3.631e-05/0.6063, allocations: 10.81 kB / 0.8296 GB, free: 2.27 MB / 0.5919 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001037/0.6064, allocations: 87.61 kB / 0.8297 GB, free: 2.191 MB / 0.5919 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002537/0.6067, allocations: 175.7 kB / 0.8298 GB, free: 2.094 MB / 0.5919 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009477/0.6076, allocations: 0.7608 MB / 0.8306 GB, free: 1.5 MB / 0.5919 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001243/0.6078, allocations: 74 kB / 0.8306 GB, free: 1.449 MB / 0.5919 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 8.807e-05/0.6079, allocations: 59.2 kB / 0.8307 GB, free: 1.426 MB / 0.5919 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001015/0.6089, allocations: 0.5716 MB / 0.8313 GB, free: 1.07 MB / 0.5919 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.239e-05/0.6089, allocations: 2.906 kB / 0.8313 GB, free: 1.07 MB / 0.5919 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.032e-05/0.609, allocations: 18.36 kB / 0.8313 GB, free: 1.055 MB / 0.5919 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.257e-05/0.609, allocations: 12.28 kB / 0.8313 GB, free: 1.055 MB / 0.5919 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008756/0.6099, allocations: 452.6 kB / 0.8317 GB, free: 0.8398 MB / 0.5919 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 0.003695/0.6136, allocations: 3.004 MB / 0.8347 GB, free: 14.25 MB / 0.6075 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.00107/0.6147, allocations: 0.4994 MB / 0.8351 GB, free: 13.99 MB / 0.6075 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0005903/0.6153, allocations: 314.7 kB / 0.8354 GB, free: 13.84 MB / 0.6075 GB
Notification: Performance of preOpt evalFunc (simulation): time 3.881e-05/0.6153, allocations: 5.031 kB / 0.8354 GB, free: 13.84 MB / 0.6075 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0006145/0.6159, allocations: 334.6 kB / 0.8358 GB, free: 13.63 MB / 0.6075 GB
Notification: Performance of pre-optimization done (n=52): time 2.836e-06/0.616, allocations: 0.5469 kB / 0.8358 GB, free: 13.63 MB / 0.6075 GB
Notification: Performance of matching and sorting (n=52): time 0.003124/0.6191, allocations: 1.358 MB / 0.8371 GB, free: 12.82 MB / 0.6075 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 4.721e-05/0.6192, allocations: 61.02 kB / 0.8371 GB, free: 12.75 MB / 0.6075 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002046/0.6212, allocations: 2.114 MB / 0.8392 GB, free: 11.81 MB / 0.6075 GB
Notification: Performance of collectPreVariables (initialization): time 6.193e-05/0.6213, allocations: 42.19 kB / 0.8393 GB, free: 11.77 MB / 0.6075 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0005209/0.6218, allocations: 0.6304 MB / 0.8399 GB, free: 11.22 MB / 0.6075 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0001569/0.622, allocations: 178.6 kB / 0.84 GB, free: 11.07 MB / 0.6075 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001759/0.6222, allocations: 111.8 kB / 0.8401 GB, free: 11 MB / 0.6075 GB
Notification: Performance of setup shared object (initialization): time 0.0001241/0.6223, allocations: 326.7 kB / 0.8405 GB, free: 10.68 MB / 0.6075 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005242/0.6228, allocations: 233.8 kB / 0.8407 GB, free: 10.57 MB / 0.6075 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005637/0.6234, allocations: 349.3 kB / 0.841 GB, free: 10.33 MB / 0.6075 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0009552/0.6244, allocations: 0.5425 MB / 0.8415 GB, free: 9.988 MB / 0.6075 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.549e-06/0.6244, allocations: 0 / 0.8415 GB, free: 9.988 MB / 0.6075 GB
Notification: Performance of matching and sorting (n=75) (initialization): time 0.001814/0.6262, allocations: 0.9342 MB / 0.8425 GB, free: 9.492 MB / 0.6075 GB
Notification: Performance of prepare postOptimizeDAE: time 1.714e-05/0.6262, allocations: 7.625 kB / 0.8425 GB, free: 9.492 MB / 0.6075 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.885e-06/0.6262, allocations: 2.75 kB / 0.8425 GB, free: 9.492 MB / 0.6075 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0005168/0.6268, allocations: 187 kB / 0.8426 GB, free: 9.414 MB / 0.6075 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000395/0.6272, allocations: 113.8 kB / 0.8428 GB, free: 9.379 MB / 0.6075 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003609/0.6308, allocations: 3.05 MB / 0.8457 GB, free: 6.48 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006021/0.6314, allocations: 79.58 kB / 0.8458 GB, free: 6.402 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.339e-05/0.6315, allocations: 20 kB / 0.8458 GB, free: 6.383 MB / 0.6075 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 13
 * Number of states: 0 ()
 * Number of discrete variables: 24 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition6,$PRE.intGai.nextTimeEvent,$whenCondition5,$PRE.reference.nextTimeEvent,$whenCondition4,$PRE.setTemp.nextTimeEvent,$whenCondition3,$whenCondition1,mean.y_last,$PRE.mean.y_last,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)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (57):
 * Single equations (assignments): 56
 * 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): 1 system
   {(2,17,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 0 systems
Notification: Performance of prepare postOptimizeDAE: time 0.0005878/0.6321, allocations: 444.3 kB / 0.8462 GB, free: 5.941 MB / 0.6075 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001633/0.6322, allocations: 143.1 kB / 0.8464 GB, free: 5.801 MB / 0.6075 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0002349/0.6325, allocations: 162 kB / 0.8465 GB, free: 5.637 MB / 0.6075 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.883e-06/0.6325, allocations: 11.94 kB / 0.8466 GB, free: 5.625 MB / 0.6075 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.103e-05/0.6325, allocations: 0 / 0.8466 GB, free: 5.625 MB / 0.6075 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.997e-06/0.6325, allocations: 11.97 kB / 0.8466 GB, free: 5.613 MB / 0.6075 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002774/0.6353, allocations: 1.729 MB / 0.8483 GB, free: 3.832 MB / 0.6075 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.417e-06/0.6353, allocations: 4 kB / 0.8483 GB, free: 3.828 MB / 0.6075 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002639/0.6356, allocations: 63.89 kB / 0.8483 GB, free: 3.766 MB / 0.6075 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0004816/0.6361, allocations: 190.3 kB / 0.8485 GB, free: 3.574 MB / 0.6075 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.155e-05/0.6361, allocations: 15.98 kB / 0.8485 GB, free: 3.559 MB / 0.6075 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004309/0.6405, allocations: 4.606 MB / 0.853 GB, free: 14.68 MB / 0.6231 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.967e-06/0.6405, allocations: 3.938 kB / 0.853 GB, free: 14.68 MB / 0.6231 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002032/0.6425, allocations: 1.173 MB / 0.8542 GB, free: 13.47 MB / 0.6231 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0003454/0.6429, allocations: 248 kB / 0.8544 GB, free: 13.21 MB / 0.6231 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001099/0.643, allocations: 15.98 kB / 0.8544 GB, free: 13.2 MB / 0.6231 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003642/0.6434, allocations: 27.97 kB / 0.8544 GB, free: 13.17 MB / 0.6231 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.00013/0.6435, allocations: 60.3 kB / 0.8545 GB, free: 13.11 MB / 0.6231 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.29e-05/0.6436, allocations: 27.92 kB / 0.8545 GB, free: 13.08 MB / 0.6231 GB
Notification: Performance of sorting global known variables: time 0.00154/0.6451, allocations: 1.545 MB / 0.856 GB, free: 11.54 MB / 0.6231 GB
Notification: Performance of sort global known variables: time 1.61e-07/0.6451, allocations: 0 / 0.856 GB, free: 11.54 MB / 0.6231 GB
Notification: Performance of remove unused functions: time 0.0007878/0.6459, allocations: 223.7 kB / 0.8562 GB, free: 11.32 MB / 0.6231 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * Number of states: 4 (thermalZoneTwoElements.extWallRC.thermCapExt[1].T,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,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_last)
 * 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 (34):
 * Single equations (assignments): 24
 * 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): 2 systems
   {(2,14,100.0%), (1,3,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 0 systems
Notification: Performance of Backend phase and start with SimCode phase: time 0.003219/0.6491, allocations: 2.098 MB / 0.8583 GB, free: 9.391 MB / 0.6231 GB
Notification: Performance of simCode: created initialization part: time 0.001582/0.6507, allocations: 0.7608 MB / 0.859 GB, free: 8.617 MB / 0.6231 GB
Notification: Performance of simCode: created event and clocks part: time 2.925e-06/0.6507, allocations: 0 / 0.859 GB, free: 8.617 MB / 0.6231 GB
Notification: Performance of simCode: created simulation system equations: time 0.0009341/0.6517, allocations: 0.5762 MB / 0.8596 GB, free: 8.016 MB / 0.6231 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001096/0.6528, allocations: 228.8 kB / 0.8598 GB, free: 7.797 MB / 0.6231 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0131/0.6659, allocations: 9.83 MB / 0.8694 GB, free: 13.77 MB / 0.6387 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007994/0.6667, allocations: 1.25 MB / 0.8706 GB, free: 12.49 MB / 0.6387 GB
Notification: Performance of simCode: alias equations: time 0.0003199/0.6671, allocations: 105.1 kB / 0.8707 GB, free: 12.39 MB / 0.6387 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005097/0.6676, allocations: 475.3 kB / 0.8712 GB, free: 11.93 MB / 0.6387 GB
Notification: Performance of SimCode: time 7.82e-07/0.6676, allocations: 0 / 0.8712 GB, free: 11.93 MB / 0.6387 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.08265/0.7502, allocations: 24.11 MB / 0.8947 GB, free: 4.129 MB / 0.6544 GB
Notification: Performance of buildModelFMU: Generate platform static: time 11.5/12.25, allocations: 5.188 kB / 0.8947 GB, free: 4.125 MB / 0.6544 GB
(rm -f IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6.pipe ; mkfifo IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6.pipe >> ../files/IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6.sim & python3 -m fmpy simulate  --output-file IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6_res.csv --start-time 0 --stop-time 5.184e+06 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 60 IBPSA_latest_IBPSA_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase6.fmu > IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase6.pipe 2>&1)