Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Modelica_DeviceDrivers_Modelica_DeviceDrivers.Blocks.Examples.TestSerialPackager.conf.json 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/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.1.1-master/package.mo", uses=false) Using package Modelica_DeviceDrivers with version 2.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.1.1-master/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) 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) Running command: "" <> buildModelFMU(Modelica_DeviceDrivers.Blocks.Examples.TestSerialPackager,fileNamePrefix="Modelica_DeviceDrivers_Modelica_DeviceDrivers_Blocks_Examples_TestSerialPackager",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Modelica_DeviceDrivers.Blocks.Examples.TestSerialPackager,fileNamePrefix="Modelica_DeviceDrivers_Modelica_DeviceDrivers_Blocks_Examples_TestSerialPackager",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001694/0.001695, allocations: 179.2 kB / 15.8 MB, free: 6.34 MB / 13.93 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.578/1.578, allocations: 223.2 MB / 239.7 MB, free: 60 kB / 186.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009353/0.0009354, allocations: 104.7 kB / 290.9 MB, free: 4.453 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_DeviceDrivers 2.1.1-master/package.mo): time 0.05593/0.05593, allocations: 12.05 MB / 354 MB, free: 1.316 MB / 282.7 MB Notification: Performance of FrontEnd - loaded program: time 0.0003766/0.0003767, allocations: 8 kB / 418 MB, free: 1.328 MB / 346.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3108/0.3112, allocations: 53.35 MB / 471.3 MB, free: 65.11 MB / 346.7 MB Notification: Performance of FrontEnd - scodeFlatten: time 0.1028/0.414, allocations: 85.1 MB / 0.5434 GB, free: 11.9 MB / 378.7 MB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0002043/0.4142, allocations: 79.95 kB / 0.5435 GB, free: 11.82 MB / 378.7 MB Notification: Performance of FrontEnd - DAE generated: time 0.02511/0.4394, allocations: 9.313 MB / 0.5525 GB, free: 2.477 MB / 378.7 MB Notification: Performance of FrontEnd: time 1.724e-06/0.4394, allocations: 0 / 0.5525 GB, free: 2.477 MB / 378.7 MB Notification: Performance of Transformations before backend: time 2.627e-05/0.4394, allocations: 12 kB / 0.5526 GB, free: 2.465 MB / 378.7 MB Warning: Alias equations of external objects are not Modelica compliant as in: addBoolean.pkgOut[1].pkg = resetPointer.pkgIn.pkg getBoolean.pkgIn.pkg = getInteger.pkgOut[1].pkg addBoolean.pkgIn.pkg = addInteger.pkgOut[1].pkg getInteger.pkgIn.pkg = unpackInt1.pkgOut[1].pkg unpackInt.pkgOut[1].pkg = unpackInt1.pkgIn.pkg resetPointer.pkgOut[1].pkg = unpackInt.pkgIn.pkg addInteger.pkgIn.pkg = packInt1.pkgOut[1].pkg packInt.pkgOut[1].pkg = packInt1.pkgIn.pkg packInt.pkgIn.pkg = packager.pkgOut.pkg addBoolean.pkgOut[1].pkg = addBoolean.pkgIn.pkg unpackInt1.pkgOut[1].pkg = unpackInt1.pkgIn.pkg getInteger.pkgOut[1].pkg = getInteger.pkgIn.pkg unpackInt.pkgOut[1].pkg = unpackInt.pkgIn.pkg resetPointer.pkgOut[1].pkg = resetPointer.pkgIn.pkg packInt1.pkgOut[1].pkg = packInt1.pkgIn.pkg addInteger.pkgOut[1].pkg = addInteger.pkgIn.pkg packInt.pkgOut[1].pkg = packInt.pkgIn.pkg Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 115 * Number of variables: 115 Notification: Performance of Generate backend data structure: time 0.001914/0.4414, allocations: 1.183 MB / 0.5537 GB, free: 1.164 MB / 378.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.119e-05/0.4414, allocations: 12.03 kB / 0.5537 GB, free: 1.152 MB / 378.7 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001552/0.4416, allocations: 94.45 kB / 0.5538 GB, free: 1.051 MB / 378.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001034/0.4417, allocations: 51.44 kB / 0.5539 GB, free: 1 MB / 378.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005196/0.4422, allocations: 348.1 kB / 0.5542 GB, free: 0.6172 MB / 378.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.5e-05/0.4423, allocations: 36.98 kB / 0.5542 GB, free: 0.5781 MB / 378.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 5.949e-05/0.4423, allocations: 40 kB / 0.5543 GB, free: 0.5391 MB / 378.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007755/0.4431, allocations: 0.4943 MB / 0.5548 GB, free: 32 kB / 378.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.072e-05/0.4431, allocations: 0 / 0.5548 GB, free: 32 kB / 378.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.2e-05/0.4432, allocations: 16 kB / 0.5548 GB, free: 16 kB / 378.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.003e-05/0.4432, allocations: 15.95 kB / 0.5548 GB, free: 0 / 378.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00122/0.6473, allocations: 286.4 kB / 0.5551 GB, free: 86.88 MB / 378.7 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002809/0.6501, allocations: 1.21 MB / 0.5562 GB, free: 86.41 MB / 378.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0009044/0.6511, allocations: 374.3 kB / 0.5566 GB, free: 86.34 MB / 378.7 MB Notification: Performance of preOpt evalFunc (simulation): time 4.343e-05/0.6511, allocations: 5.297 kB / 0.5566 GB, free: 86.34 MB / 378.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004661/0.6516, allocations: 240.7 kB / 0.5568 GB, free: 86.27 MB / 378.7 MB Notification: Performance of pre-optimization done (n=39): time 3.306e-06/0.6516, allocations: 0 / 0.5568 GB, free: 86.27 MB / 378.7 MB Notification: Performance of matching and sorting (n=39): time 0.001213/0.6528, allocations: 0.8683 MB / 0.5577 GB, free: 85.84 MB / 378.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 8.3e-05/0.6529, allocations: 131.1 kB / 0.5578 GB, free: 85.71 MB / 378.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002586/0.6532, allocations: 210 kB / 0.558 GB, free: 85.61 MB / 378.7 MB Notification: Performance of collectPreVariables (initialization): time 5.055e-05/0.6533, allocations: 45.12 kB / 0.558 GB, free: 85.57 MB / 378.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0001571/0.6534, allocations: 217.3 kB / 0.5583 GB, free: 85.44 MB / 378.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001023/0.6535, allocations: 93.27 kB / 0.5583 GB, free: 85.41 MB / 378.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 2.488e-05/0.6536, allocations: 8.312 kB / 0.5584 GB, free: 85.41 MB / 378.7 MB Notification: Performance of setup shared object (initialization): time 9.541e-05/0.6537, allocations: 343.3 kB / 0.5587 GB, free: 85.09 MB / 378.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002041/0.6539, allocations: 110.3 kB / 0.5588 GB, free: 85.09 MB / 378.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003003/0.6542, allocations: 302.4 kB / 0.5591 GB, free: 84.86 MB / 378.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003021/0.6545, allocations: 167.9 kB / 0.5592 GB, free: 84.85 MB / 378.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.107e-06/0.6545, allocations: 2.906 kB / 0.5592 GB, free: 84.85 MB / 378.7 MB Notification: Performance of matching and sorting (n=61) (initialization): time 0.0007233/0.6553, allocations: 458 kB / 0.5597 GB, free: 84.76 MB / 378.7 MB Notification: Performance of prepare postOptimizeDAE: time 2.225e-05/0.6553, allocations: 8.25 kB / 0.5597 GB, free: 84.76 MB / 378.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.128e-05/0.6553, allocations: 9.5 kB / 0.5597 GB, free: 84.76 MB / 378.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 2.517e-05/0.6553, allocations: 11 kB / 0.5597 GB, free: 84.76 MB / 378.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002509/0.6556, allocations: 74.77 kB / 0.5598 GB, free: 84.75 MB / 378.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.655e-05/0.6556, allocations: 15.06 kB / 0.5598 GB, free: 84.75 MB / 378.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002161/0.6558, allocations: 38.98 kB / 0.5598 GB, free: 84.74 MB / 378.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.702e-05/0.6559, allocations: 25.39 kB / 0.5598 GB, free: 84.74 MB / 378.7 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 28 * Number of states: 0 () * Number of discrete variables: 60 ($PRE.getBoolean.dummy,getBoolean.dummy,$PRE.addBoolean.pkgOut[1].dummy,addBoolean.pkgOut[1].dummy,$PRE.unpackInt1.dummy,unpackInt1.dummy,$PRE.unpackInt1.y,unpackInt1.y,$PRE.unpackInt1.pkgOut[1].dummy,unpackInt1.pkgOut[1].dummy,$PRE.getInteger.dummy,getInteger.dummy,$PRE.getInteger.y[1],getInteger.y[1],$PRE.getInteger.pkgOut[1].dummy,getInteger.pkgOut[1].dummy,$PRE.unpackInt.dummy,unpackInt.dummy,$PRE.unpackInt.y,unpackInt.y,$PRE.unpackInt.pkgOut[1].dummy,unpackInt.pkgOut[1].dummy,$PRE.resetPointer.dummy,resetPointer.dummy,$PRE.resetPointer.pkgOut[1].dummy,resetPointer.pkgOut[1].dummy,$PRE.packInt1.pkgOut[1].dummy,packInt1.pkgOut[1].dummy,$PRE.addInteger.pkgOut[1].dummy,addInteger.pkgOut[1].dummy,$PRE.packInt.pkgOut[1].dummy,packInt.pkgOut[1].dummy,$PRE.packager.pkgOut.dummy,packager.pkgOut.dummy,$whenCondition2,integerExpression.y,$whenCondition1,addBoolean.pkgOut[1].trigger,addInteger.u[1],integerExpression1.y,getBoolean.y[1],$PRE.getBoolean.y_int[1],getBoolean.y_int[1],addBoolean.u[1],addBoolean.u_int[1],$PRE.booleanPulse.pulseStart,booleanPulse.pulseStart,unpackInt.pkgIn.autoPkgBitSize,getInteger.pkgIn.autoPkgBitSize,unpackInt1.pkgIn.autoPkgBitSize,getBoolean.pkgIn.autoPkgBitSize,getBoolean.pkgIn.userPkgBitSize,getBoolean.pkgIn.backwardTrigger,packager.backwardPropagatedBufferSize,packager.bufferSize,packInt.pkgIn.autoPkgBitSize,addInteger.pkgIn.autoPkgBitSize,packInt1.pkgIn.autoPkgBitSize,resetPointer.pkgIn.autoPkgBitSize,addBoolean.pkgIn.autoPkgBitSize) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (61): * Single equations (assignments): 61 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0002863/0.6562, allocations: 247.8 kB / 0.5601 GB, free: 84.6 MB / 378.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.702e-05/0.6562, allocations: 28.73 kB / 0.5601 GB, free: 84.59 MB / 378.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 5.407e-05/0.6563, allocations: 22.92 kB / 0.5601 GB, free: 84.58 MB / 378.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.432e-06/0.6563, allocations: 4.125 kB / 0.5601 GB, free: 84.58 MB / 378.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.084e-05/0.6563, allocations: 1.219 kB / 0.5601 GB, free: 84.58 MB / 378.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.121e-06/0.6563, allocations: 3.297 kB / 0.5601 GB, free: 84.58 MB / 378.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001277/0.6576, allocations: 0.9364 MB / 0.5611 GB, free: 84.26 MB / 378.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.396e-06/0.6576, allocations: 1.375 kB / 0.5611 GB, free: 84.26 MB / 378.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 6.151e-05/0.6577, allocations: 10.69 kB / 0.5611 GB, free: 84.26 MB / 378.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 5.55e-06/0.6577, allocations: 2.594 kB / 0.5611 GB, free: 84.26 MB / 378.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.138e-05/0.6578, allocations: 12.8 kB / 0.5611 GB, free: 84.26 MB / 378.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.729e-06/0.6578, allocations: 2.156 kB / 0.5611 GB, free: 84.26 MB / 378.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.866e-06/0.6578, allocations: 1.594 kB / 0.5611 GB, free: 84.26 MB / 378.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0007604/0.6585, allocations: 0.5918 MB / 0.5617 GB, free: 84.05 MB / 378.7 MB Notification: Performance of postOpt removeConstants (simulation): time 5.639e-05/0.6586, allocations: 101.7 kB / 0.5618 GB, free: 83.94 MB / 378.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.061e-05/0.6587, allocations: 10.89 kB / 0.5618 GB, free: 83.94 MB / 378.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001569/0.6588, allocations: 20.33 kB / 0.5618 GB, free: 83.93 MB / 378.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.562e-05/0.6589, allocations: 25.62 kB / 0.5618 GB, free: 83.93 MB / 378.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.114e-05/0.6589, allocations: 15.39 kB / 0.5618 GB, free: 83.93 MB / 378.7 MB Notification: Performance of sorting global known variables: time 9.775e-05/0.6591, allocations: 138.3 kB / 0.562 GB, free: 83.83 MB / 378.7 MB Notification: Performance of sort global known variables: time 1.41e-07/0.6591, allocations: 0 / 0.562 GB, free: 83.83 MB / 378.7 MB Notification: Performance of remove unused functions: time 0.0005664/0.6596, allocations: 143.9 kB / 0.5621 GB, free: 83.8 MB / 378.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 0 () * Number of discrete variables: 39 (unpackInt.pkgIn.autoPkgBitSize,getInteger.pkgIn.autoPkgBitSize,unpackInt1.pkgIn.autoPkgBitSize,getBoolean.pkgIn.autoPkgBitSize,addBoolean.pkgOut[1].trigger,$whenCondition2,$whenCondition1,integerExpression.y,packager.pkgOut.dummy,packInt.pkgOut[1].dummy,addInteger.pkgOut[1].dummy,addInteger.u[1],integerExpression1.y,packInt1.pkgOut[1].dummy,resetPointer.pkgOut[1].dummy,resetPointer.dummy,unpackInt.pkgOut[1].dummy,unpackInt.y,unpackInt.dummy,getInteger.pkgOut[1].dummy,getInteger.y[1],getInteger.dummy,unpackInt1.pkgOut[1].dummy,unpackInt1.y,unpackInt1.dummy,addBoolean.pkgOut[1].dummy,addBoolean.u[1],addBoolean.u_int[1],getBoolean.y[1],getBoolean.y_int[1],getBoolean.dummy,booleanPulse.pulseStart,packager.backwardPropagatedBufferSize,packager.bufferSize,packInt.pkgIn.autoPkgBitSize,addInteger.pkgIn.autoPkgBitSize,packInt1.pkgIn.autoPkgBitSize,resetPointer.pkgIn.autoPkgBitSize,addBoolean.pkgIn.autoPkgBitSize) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (35): * Single equations (assignments): 9 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 26 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.001326/0.661, allocations: 1.382 MB / 0.5634 GB, free: 82.82 MB / 378.7 MB Notification: Performance of simCode: created initialization part: time 0.0006346/0.6616, allocations: 324.5 kB / 0.5638 GB, free: 82.72 MB / 378.7 MB Notification: Performance of simCode: created event and clocks part: time 2.945e-06/0.6616, allocations: 4.125 kB / 0.5638 GB, free: 82.72 MB / 378.7 MB Notification: Performance of simCode: created simulation system equations: time 0.0002885/0.6619, allocations: 159.7 kB / 0.5639 GB, free: 82.67 MB / 378.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.000461/0.6624, allocations: 64.08 kB / 0.564 GB, free: 82.66 MB / 378.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004203/0.6666, allocations: 5.978 MB / 0.5698 GB, free: 77.37 MB / 378.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003487/0.667, allocations: 0.828 MB / 0.5706 GB, free: 76.67 MB / 378.7 MB Notification: Performance of simCode: alias equations: time 0.0001642/0.6671, allocations: 43.36 kB / 0.5707 GB, free: 76.66 MB / 378.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001285/0.6673, allocations: 110.3 kB / 0.5708 GB, free: 76.58 MB / 378.7 MB Notification: Performance of SimCode: time 7.01e-07/0.6673, allocations: 0 / 0.5708 GB, free: 76.58 MB / 378.7 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.01986/0.6872, allocations: 7.176 MB / 0.5778 GB, free: 75.32 MB / 378.7 MB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001657/0.6874, allocations: 209.5 kB / 0.578 GB, free: 75.07 MB / 378.7 MB Notification: Performance of buildModelFMU: Generate platform static: time 2.131/2.819, allocations: 0 / 0.578 GB, free: 75.07 MB / 378.7 MB (rm -f Modelica_DeviceDrivers_Modelica_DeviceDrivers.Blocks.Examples.TestSerialPackager.pipe ; mkfifo Modelica_DeviceDrivers_Modelica_DeviceDrivers.Blocks.Examples.TestSerialPackager.pipe ; head -c 1048576 < Modelica_DeviceDrivers_Modelica_DeviceDrivers.Blocks.Examples.TestSerialPackager.pipe >> ../files/Modelica_DeviceDrivers_Modelica_DeviceDrivers.Blocks.Examples.TestSerialPackager.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Modelica_DeviceDrivers_Modelica_DeviceDrivers_Blocks_Examples_TestSerialPackager_fmu --startTime=0 --stopTime=5 --timeout=50 --tolerance=1e-06 Modelica_DeviceDrivers_Modelica_DeviceDrivers_Blocks_Examples_TestSerialPackager.fmu > Modelica_DeviceDrivers_Modelica_DeviceDrivers.Blocks.Examples.TestSerialPackager.pipe 2>&1)