Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.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 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.TestCase7,fileNamePrefix="IBPSA_latest_IBPSA_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase7",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7,fileNamePrefix="IBPSA_latest_IBPSA_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase7",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 0.001399/0.001399, allocations: 102.9 kB / 15.98 MB, free: 6.344 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001391/0.001392, allocations: 195.6 kB / 16.91 MB, free: 6.188 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.402/1.402, allocations: 222.9 MB / 240.6 MB, free: 15.45 MB / 206.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7435/0.7435, allocations: 115.3 MB / 406.1 MB, free: 6.352 MB / 318.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.001405/0.001405, allocations: 59.91 kB / 493.2 MB, free: 0.5859 MB / 398.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.5311/0.5326, allocations: 76.17 MB / 0.556 GB, free: 36.5 MB / 446.1 MB
Notification: Performance of NFInst.instantiate(IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7): time 0.2265/0.7591, allocations: 155.7 MB / 0.708 GB, free: 8.602 MB / 0.545 GB
Notification: Performance of NFInst.instExpressions: time 0.0318/0.791, allocations: 21.87 MB / 0.7294 GB, free: 2.668 MB / 0.5606 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.003878/0.7949, allocations: 63.62 kB / 0.7295 GB, free: 2.605 MB / 0.5606 GB
Notification: Performance of NFTyping.typeComponents: time 0.002537/0.7975, allocations: 1.333 MB / 0.7308 GB, free: 1.27 MB / 0.5606 GB
Notification: Performance of NFTyping.typeBindings: time 0.003022/0.8006, allocations: 0.9577 MB / 0.7317 GB, free: 316 kB / 0.5606 GB
Notification: Performance of NFTyping.typeClassSections: time 0.002596/0.8032, allocations: 0.5805 MB / 0.7323 GB, free: 15.74 MB / 0.5762 GB
Notification: Performance of NFFlatten.flatten: time 0.003679/0.8069, allocations: 1.696 MB / 0.7339 GB, free: 14.04 MB / 0.5762 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.002391/0.8093, allocations: 0.9706 MB / 0.7349 GB, free: 13.05 MB / 0.5762 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.002315/0.8117, allocations: 0.7436 MB / 0.7356 GB, free: 12.3 MB / 0.5762 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002808/0.8145, allocations: 1.238 MB / 0.7368 GB, free: 11.06 MB / 0.5762 GB
Notification: Performance of NFPackage.collectConstants: time 0.00059/0.8151, allocations: 88 kB / 0.7369 GB, free: 10.97 MB / 0.5762 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0008864/0.816, allocations: 144 kB / 0.737 GB, free: 10.83 MB / 0.5762 GB
Notification: Performance of NFScalarize.scalarize: time 0.0004999/0.8165, allocations: 440.3 kB / 0.7374 GB, free: 10.4 MB / 0.5762 GB
Notification: Performance of NFVerifyModel.verify: time 0.0008871/0.8174, allocations: 0.6519 MB / 0.7381 GB, free: 9.746 MB / 0.5762 GB
Notification: Performance of NFConvertDAE.convert: time 0.002166/0.8196, allocations: 1.576 MB / 0.7396 GB, free: 8.164 MB / 0.5762 GB
Notification: Performance of FrontEnd - DAE generated: time 9.629e-06/0.8196, allocations: 0 / 0.7396 GB, free: 8.164 MB / 0.5762 GB
Notification: Performance of FrontEnd: time 3.176e-06/0.8196, allocations: 0 / 0.7396 GB, free: 8.164 MB / 0.5762 GB
Notification: Performance of Transformations before backend: time 1.677e-05/0.8196, allocations: 0 / 0.7396 GB, free: 8.164 MB / 0.5762 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 157
 * Number of variables: 157
Notification: Performance of Generate backend data structure: time 0.003322/0.823, allocations: 1.915 MB / 0.7415 GB, free: 6.188 MB / 0.5762 GB
Notification: Performance of prepare preOptimizeDAE: time 5.209e-05/0.823, allocations: 8.031 kB / 0.7415 GB, free: 6.18 MB / 0.5762 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001391/0.8232, allocations: 106.7 kB / 0.7416 GB, free: 6.066 MB / 0.5762 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0003041/0.8235, allocations: 190.7 kB / 0.7418 GB, free: 5.879 MB / 0.5762 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001231/0.8247, allocations: 0.8707 MB / 0.7426 GB, free: 4.961 MB / 0.5762 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001456/0.8249, allocations: 91 kB / 0.7427 GB, free: 4.867 MB / 0.5762 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001173/0.825, allocations: 67.98 kB / 0.7428 GB, free: 4.801 MB / 0.5762 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001371/0.8264, allocations: 0.7176 MB / 0.7435 GB, free: 4.055 MB / 0.5762 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.508e-05/0.8264, allocations: 4 kB / 0.7435 GB, free: 4.051 MB / 0.5762 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.61e-05/0.8265, allocations: 24 kB / 0.7435 GB, free: 4.027 MB / 0.5762 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.385e-05/0.8265, allocations: 16 kB / 0.7435 GB, free: 4.012 MB / 0.5762 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001118/0.8276, allocations: 0.5438 MB / 0.7441 GB, free: 3.465 MB / 0.5762 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 0.4323/1.26, allocations: 3.619 MB / 0.7476 GB, free: 175.3 MB / 0.5762 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.00216/1.262, allocations: 0.6069 MB / 0.7482 GB, free: 175.2 MB / 0.5762 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.001085/1.263, allocations: 378.1 kB / 0.7485 GB, free: 175.1 MB / 0.5762 GB
Notification: Performance of preOpt evalFunc (simulation): time 7.081e-05/1.263, allocations: 8.453 kB / 0.7486 GB, free: 175.1 MB / 0.5762 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001007/1.264, allocations: 385.5 kB / 0.7489 GB, free: 175 MB / 0.5762 GB
Notification: Performance of pre-optimization done (n=65): time 3.476e-06/1.264, allocations: 0 / 0.7489 GB, free: 175 MB / 0.5762 GB
Notification: Performance of matching and sorting (n=65): time 0.006029/1.27, allocations: 1.778 MB / 0.7507 GB, free: 174.4 MB / 0.5762 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 6.532e-05/1.271, allocations: 60 kB / 0.7507 GB, free: 174.4 MB / 0.5762 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004068/1.275, allocations: 2.251 MB / 0.7529 GB, free: 173.7 MB / 0.5762 GB
Notification: Performance of collectPreVariables (initialization): time 0.0001499/1.275, allocations: 42.44 kB / 0.753 GB, free: 173.6 MB / 0.5762 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0009314/1.276, allocations: 0.7221 MB / 0.7537 GB, free: 173.1 MB / 0.5762 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0002832/1.276, allocations: 214.7 kB / 0.7539 GB, free: 173 MB / 0.5762 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.00031/1.276, allocations: 125.9 kB / 0.754 GB, free: 172.9 MB / 0.5762 GB
Notification: Performance of setup shared object (initialization): time 0.0001665/1.277, allocations: 333.8 kB / 0.7543 GB, free: 172.6 MB / 0.5762 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008202/1.277, allocations: 281.6 kB / 0.7546 GB, free: 172.5 MB / 0.5762 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009114/1.278, allocations: 420 kB / 0.755 GB, free: 172.3 MB / 0.5762 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001423/1.28, allocations: 0.6662 MB / 0.7556 GB, free: 171.9 MB / 0.5762 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.705e-06/1.28, allocations: 1.75 kB / 0.7556 GB, free: 171.9 MB / 0.5762 GB
Notification: Performance of matching and sorting (n=93) (initialization): time 0.003195/1.283, allocations: 1.119 MB / 0.7567 GB, free: 171.5 MB / 0.5762 GB
Notification: Performance of prepare postOptimizeDAE: time 3.535e-05/1.283, allocations: 12.53 kB / 0.7567 GB, free: 171.5 MB / 0.5762 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.272e-05/1.283, allocations: 7.141 kB / 0.7567 GB, free: 171.5 MB / 0.5762 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001053/1.284, allocations: 271.9 kB / 0.757 GB, free: 171.4 MB / 0.5762 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005064/1.285, allocations: 119.7 kB / 0.7571 GB, free: 171.4 MB / 0.5762 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006524/1.291, allocations: 3.749 MB / 0.7608 GB, free: 168.9 MB / 0.5762 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001073/1.292, allocations: 99.81 kB / 0.7609 GB, free: 168.9 MB / 0.5762 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.949e-05/1.292, allocations: 28.78 kB / 0.7609 GB, free: 168.9 MB / 0.5762 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,$whenCondition1,mean.y_last,$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,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 0.001357/1.294, allocations: 466.8 kB / 0.7613 GB, free: 168.6 MB / 0.5762 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003313/1.294, allocations: 159.1 kB / 0.7615 GB, free: 168.5 MB / 0.5762 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0004386/1.294, allocations: 189.1 kB / 0.7617 GB, free: 168.5 MB / 0.5762 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.792e-05/1.295, allocations: 13.28 kB / 0.7617 GB, free: 168.4 MB / 0.5762 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.937e-05/1.295, allocations: 8.656 kB / 0.7617 GB, free: 168.4 MB / 0.5762 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.472e-05/1.295, allocations: 3.281 kB / 0.7617 GB, free: 168.4 MB / 0.5762 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004818/1.299, allocations: 2.033 MB / 0.7637 GB, free: 167.5 MB / 0.5762 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.759e-06/1.299, allocations: 3.938 kB / 0.7637 GB, free: 167.5 MB / 0.5762 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003157/1.3, allocations: 51.84 kB / 0.7637 GB, free: 167.5 MB / 0.5762 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0008951/1.301, allocations: 278.9 kB / 0.764 GB, free: 167.4 MB / 0.5762 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.558e-05/1.301, allocations: 28.22 kB / 0.764 GB, free: 167.4 MB / 0.5762 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006846/1.308, allocations: 5.231 MB / 0.7691 GB, free: 163.4 MB / 0.5762 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.687e-06/1.308, allocations: 0 / 0.7691 GB, free: 163.4 MB / 0.5762 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003556/1.311, allocations: 1.402 MB / 0.7705 GB, free: 162.7 MB / 0.5762 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0005067/1.312, allocations: 256.5 kB / 0.7707 GB, free: 162.5 MB / 0.5762 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001492/1.312, allocations: 18.75 kB / 0.7708 GB, free: 162.5 MB / 0.5762 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004357/1.312, allocations: 52.12 kB / 0.7708 GB, free: 162.5 MB / 0.5762 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002443/1.313, allocations: 72.16 kB / 0.7709 GB, free: 162.5 MB / 0.5762 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.505e-05/1.313, allocations: 22.03 kB / 0.7709 GB, free: 162.5 MB / 0.5762 GB
Notification: Performance of sorting global known variables: time 0.002694/1.315, allocations: 1.631 MB / 0.7725 GB, free: 162 MB / 0.5762 GB
Notification: Performance of sort global known variables: time 3.91e-07/1.315, allocations: 0 / 0.7725 GB, free: 162 MB / 0.5762 GB
Notification: Performance of remove unused functions: time 0.001637/1.317, allocations: 277.8 kB / 0.7728 GB, free: 161.9 MB / 0.5762 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_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 (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 0.004757/1.322, allocations: 2.323 MB / 0.775 GB, free: 160.7 MB / 0.5762 GB
Notification: Performance of simCode: created initialization part: time 0.002779/1.325, allocations: 0.9577 MB / 0.776 GB, free: 160.3 MB / 0.5762 GB
Notification: Performance of simCode: created event and clocks part: time 6.652e-06/1.325, allocations: 4.062 kB / 0.776 GB, free: 160.3 MB / 0.5762 GB
Notification: Performance of simCode: created simulation system equations: time 0.001526/1.326, allocations: 0.6762 MB / 0.7766 GB, free: 159.9 MB / 0.5762 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002256/1.328, allocations: 290.9 kB / 0.7769 GB, free: 159.8 MB / 0.5762 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02528/1.354, allocations: 12.41 MB / 0.789 GB, free: 153 MB / 0.5762 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001092/1.355, allocations: 1.311 MB / 0.7903 GB, free: 151.7 MB / 0.5762 GB
Notification: Performance of simCode: alias equations: time 0.0005574/1.355, allocations: 118.4 kB / 0.7904 GB, free: 151.6 MB / 0.5762 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006358/1.356, allocations: 0.5461 MB / 0.7909 GB, free: 151 MB / 0.5762 GB
Notification: Performance of SimCode: time 1.884e-06/1.356, allocations: 4 kB / 0.791 GB, free: 151 MB / 0.5762 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.05261/1.409, allocations: 28.32 MB / 0.8186 GB, free: 123.1 MB / 0.5762 GB
Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.000206/1.409, allocations: 292.4 kB / 0.8189 GB, free: 122.7 MB / 0.5762 GB
Notification: Performance of buildModelFMU: Generate platform static: time 2.629/4.038, allocations: 0 / 0.8189 GB, free: 122.7 MB / 0.5762 GB
(rm -f IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe ; mkfifo IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe >> ../files/IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator  --tempDir=temp_IBPSA_latest_IBPSA_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase7_fmu --startTime=0 --stopTime=5.184e+06 --timeout=50 --tolerance=1e-06 IBPSA_latest_IBPSA_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase7.fmu > IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase7.pipe 2>&1)