Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature.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/Buildings 9.1.3-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/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(Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature,fileNamePrefix="Buildings_9_Buildings_Examples_VAVReheat_BaseClasses_Controls_Examples_SupplyAirTemperature",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature,fileNamePrefix="Buildings_9_Buildings_Examples_VAVReheat_BaseClasses_Controls_Examples_SupplyAirTemperature",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 0.007264/0.007264, allocations: 103.2 kB / 15.73 MB, free: 6.004 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001643/0.001643, allocations: 188.6 kB / 16.67 MB, free: 5.93 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.356/1.356, allocations: 222.9 MB / 240.4 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo): time 2.262/2.262, allocations: 390.3 MB / 0.6648 GB, free: 0.6562 MB / 0.5294 GB Notification: Performance of FrontEnd - loaded program: time 0.001295/0.001295, allocations: 63.91 kB / 0.9504 GB, free: 8.184 MB / 0.7325 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.8217/0.823, allocations: 140.4 MB / 1.087 GB, free: 5.301 MB / 0.8575 GB Notification: Performance of NFInst.instantiate(Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature): time 0.003774/0.8268, allocations: 2.607 MB / 1.09 GB, free: 3.426 MB / 0.8575 GB Notification: Performance of NFInst.instExpressions: time 0.001864/0.8287, allocations: 0.9203 MB / 1.091 GB, free: 2.762 MB / 0.8575 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003089/0.829, allocations: 10.47 kB / 1.091 GB, free: 2.758 MB / 0.8575 GB Notification: Performance of NFTyping.typeComponents: time 0.0002328/0.8293, allocations: 65.59 kB / 1.091 GB, free: 2.707 MB / 0.8575 GB Notification: Performance of NFTyping.typeBindings: time 0.0001795/0.8295, allocations: 59.75 kB / 1.091 GB, free: 2.66 MB / 0.8575 GB Notification: Performance of NFTyping.typeClassSections: time 0.0008315/0.8304, allocations: 323.4 kB / 1.091 GB, free: 2.469 MB / 0.8575 GB Notification: Performance of NFFlatten.flatten: time 0.0006857/0.831, allocations: 0.6022 MB / 1.092 GB, free: 2.156 MB / 0.8575 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0004972/0.8315, allocations: 288.3 kB / 1.092 GB, free: 2.004 MB / 0.8575 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0002971/0.8319, allocations: 223.3 kB / 1.092 GB, free: 1.875 MB / 0.8575 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0002676/0.8321, allocations: 227.5 kB / 1.093 GB, free: 1.742 MB / 0.8575 GB Notification: Performance of NFPackage.collectConstants: time 0.0001083/0.8322, allocations: 68.31 kB / 1.093 GB, free: 1.742 MB / 0.8575 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0001662/0.8324, allocations: 81.17 kB / 1.093 GB, free: 1.738 MB / 0.8575 GB Notification: Performance of NFScalarize.scalarize: time 0.0001003/0.8325, allocations: 127 kB / 1.093 GB, free: 1.645 MB / 0.8575 GB Notification: Performance of NFVerifyModel.verify: time 0.0002133/0.8327, allocations: 248 kB / 1.093 GB, free: 1.469 MB / 0.8575 GB Notification: Performance of NFConvertDAE.convert: time 0.0009794/0.8337, allocations: 0.7516 MB / 1.094 GB, free: 1.16 MB / 0.8575 GB Notification: Performance of FrontEnd - DAE generated: time 5.4e-06/0.8337, allocations: 1.594 kB / 1.094 GB, free: 1.16 MB / 0.8575 GB Notification: Performance of FrontEnd: time 1.643e-06/0.8338, allocations: 0 / 1.094 GB, free: 1.16 MB / 0.8575 GB Notification: Performance of Transformations before backend: time 1.647e-05/0.8338, allocations: 0 / 1.094 GB, free: 1.16 MB / 0.8575 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 102 * Number of variables: 102 Notification: Performance of Generate backend data structure: time 0.00134/0.8351, allocations: 0.7756 MB / 1.095 GB, free: 0.543 MB / 0.8575 GB Notification: Performance of prepare preOptimizeDAE: time 5.204e-05/0.8352, allocations: 9.719 kB / 1.095 GB, free: 0.543 MB / 0.8575 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 9.506e-05/0.8353, allocations: 78.8 kB / 1.095 GB, free: 492 kB / 0.8575 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001219/0.8354, allocations: 52.08 kB / 1.095 GB, free: 468 kB / 0.8575 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006178/0.836, allocations: 386.8 kB / 1.095 GB, free: 144 kB / 0.8575 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.523e-05/0.8361, allocations: 36.67 kB / 1.095 GB, free: 128 kB / 0.8575 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.135e-05/0.8362, allocations: 42.91 kB / 1.095 GB, free: 116 kB / 0.8575 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008546/0.8371, allocations: 440 kB / 1.096 GB, free: 15.91 MB / 0.8731 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.446e-05/0.8371, allocations: 0.625 kB / 1.096 GB, free: 15.91 MB / 0.8731 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.847e-05/0.8371, allocations: 25.27 kB / 1.096 GB, free: 15.89 MB / 0.8731 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.665e-05/0.8372, allocations: 9.281 kB / 1.096 GB, free: 15.89 MB / 0.8731 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007294/0.8379, allocations: 309 kB / 1.096 GB, free: 15.78 MB / 0.8731 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002427/0.8403, allocations: 1.417 MB / 1.097 GB, free: 14.9 MB / 0.8731 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007372/0.8411, allocations: 262.8 kB / 1.098 GB, free: 14.79 MB / 0.8731 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002743/0.8414, allocations: 115.9 kB / 1.098 GB, free: 14.74 MB / 0.8731 GB Notification: Performance of preOpt evalFunc (simulation): time 3.734e-05/0.8414, allocations: 7.203 kB / 1.098 GB, free: 14.73 MB / 0.8731 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004181/0.8418, allocations: 203.5 kB / 1.098 GB, free: 14.6 MB / 0.8731 GB Notification: Performance of pre-optimization done (n=26): time 2.084e-06/0.8419, allocations: 0 / 1.098 GB, free: 14.6 MB / 0.8731 GB Notification: Performance of matching and sorting (n=26): time 0.0008911/0.8428, allocations: 339 kB / 1.098 GB, free: 14.46 MB / 0.8731 GB Notification: Performance of inlineWhenForInitialization (initialization): time 9.157e-05/0.8429, allocations: 132.1 kB / 1.098 GB, free: 14.3 MB / 0.8731 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006051/0.8435, allocations: 412.9 kB / 1.099 GB, free: 14.09 MB / 0.8731 GB Notification: Performance of collectPreVariables (initialization): time 4.747e-05/0.8435, allocations: 37.53 kB / 1.099 GB, free: 14.05 MB / 0.8731 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002156/0.8437, allocations: 238.5 kB / 1.099 GB, free: 13.85 MB / 0.8731 GB Notification: Performance of collectInitialBindings (initialization): time 7.67e-05/0.8438, allocations: 84.38 kB / 1.099 GB, free: 13.79 MB / 0.8731 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001754/0.844, allocations: 76.86 kB / 1.099 GB, free: 13.75 MB / 0.8731 GB Notification: Performance of setup shared object (initialization): time 0.000178/0.8442, allocations: 346.8 kB / 1.1 GB, free: 13.42 MB / 0.8731 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003385/0.8445, allocations: 129.1 kB / 1.1 GB, free: 13.36 MB / 0.8731 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003898/0.8449, allocations: 198.5 kB / 1.1 GB, free: 13.23 MB / 0.8731 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006049/0.8456, allocations: 283.7 kB / 1.1 GB, free: 13.06 MB / 0.8731 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.767e-06/0.8456, allocations: 0.7812 kB / 1.1 GB, free: 13.06 MB / 0.8731 GB Notification: Performance of matching and sorting (n=39) (initialization): time 0.0009878/0.8466, allocations: 418.2 kB / 1.1 GB, free: 12.86 MB / 0.8731 GB Notification: Performance of prepare postOptimizeDAE: time 5.83e-05/0.8466, allocations: 35.41 kB / 1.101 GB, free: 12.83 MB / 0.8731 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.149e-05/0.8467, allocations: 5.469 kB / 1.101 GB, free: 12.83 MB / 0.8731 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.583e-05/0.8467, allocations: 2.719 kB / 1.101 GB, free: 12.83 MB / 0.8731 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003036/0.847, allocations: 63.62 kB / 1.101 GB, free: 12.82 MB / 0.8731 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.562e-05/0.847, allocations: 6.719 kB / 1.101 GB, free: 12.81 MB / 0.8731 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004295/0.8475, allocations: 70.92 kB / 1.101 GB, free: 12.79 MB / 0.8731 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.926e-05/0.8475, allocations: 17.31 kB / 1.101 GB, free: 12.78 MB / 0.8731 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0004396/0.848, allocations: 241.5 kB / 1.101 GB, free: 12.63 MB / 0.8731 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003429/0.8483, allocations: 190.1 kB / 1.101 GB, free: 12.5 MB / 0.8731 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0005161/0.8488, allocations: 287.3 kB / 1.101 GB, free: 12.32 MB / 0.8731 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.907e-06/0.8489, allocations: 3.984 kB / 1.101 GB, free: 12.32 MB / 0.8731 GB Notification: Performance of matching and sorting (n=39) (initialization_lambda0): time 0.0008648/0.8497, allocations: 410.2 kB / 1.102 GB, free: 12.11 MB / 0.8731 GB Notification: Performance of prepare postOptimizeDAE: time 4.391e-05/0.8498, allocations: 44.11 kB / 1.102 GB, free: 12.07 MB / 0.8731 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.727e-06/0.8498, allocations: 0.9688 kB / 1.102 GB, free: 12.07 MB / 0.8731 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.821e-06/0.8498, allocations: 2.75 kB / 1.102 GB, free: 12.07 MB / 0.8731 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002581/0.8501, allocations: 53.09 kB / 1.102 GB, free: 12.07 MB / 0.8731 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.354e-06/0.8501, allocations: 6.922 kB / 1.102 GB, free: 12.07 MB / 0.8731 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003886/0.8505, allocations: 63.67 kB / 1.102 GB, free: 12.05 MB / 0.8731 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.997e-05/0.8505, allocations: 12.45 kB / 1.102 GB, free: 12.05 MB / 0.8731 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 5 * Number of states: 0 () * Number of discrete variables: 6 ($whenCondition1,$whenCondition2,uEna.y,$PRE.uEna.y,$whenCondition3,conTSup.con.cheYMinMax.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (37): * Single equations (assignments): 36 * Array equations: 0 * Algorithm blocks: 1 * 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 0.0001864/0.8507, allocations: 201.8 kB / 1.102 GB, free: 11.85 MB / 0.8731 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 7.08e-05/0.8508, allocations: 41.38 kB / 1.102 GB, free: 11.83 MB / 0.8731 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0008297/0.8516, allocations: 305.2 kB / 1.102 GB, free: 11.69 MB / 0.8731 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.147e-05/0.8517, allocations: 3.672 kB / 1.102 GB, free: 11.69 MB / 0.8731 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.333e-06/0.8517, allocations: 0.5312 kB / 1.102 GB, free: 11.69 MB / 0.8731 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.017e-06/0.8517, allocations: 6.016 kB / 1.102 GB, free: 11.68 MB / 0.8731 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001306/0.853, allocations: 0.7792 MB / 1.103 GB, free: 11.18 MB / 0.8731 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.404e-06/0.853, allocations: 4 kB / 1.103 GB, free: 11.18 MB / 0.8731 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002272/0.8532, allocations: 53.95 kB / 1.103 GB, free: 11.16 MB / 0.8731 GB Notification: Performance of postOpt tearingSystem (simulation): time 5.631e-06/0.8533, allocations: 2.234 kB / 1.103 GB, free: 11.16 MB / 0.8731 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.522e-05/0.8533, allocations: 6.172 kB / 1.103 GB, free: 11.16 MB / 0.8731 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.294e-06/0.8533, allocations: 1.312 kB / 1.103 GB, free: 11.16 MB / 0.8731 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.886e-06/0.8533, allocations: 2.062 kB / 1.103 GB, free: 11.16 MB / 0.8731 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009047/0.8542, allocations: 497.5 kB / 1.104 GB, free: 10.88 MB / 0.8731 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001259/0.8543, allocations: 123.4 kB / 1.104 GB, free: 10.75 MB / 0.8731 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.884e-05/0.8544, allocations: 6.234 kB / 1.104 GB, free: 10.75 MB / 0.8731 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001949/0.8546, allocations: 16.88 kB / 1.104 GB, free: 10.74 MB / 0.8731 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.253e-05/0.8547, allocations: 15.47 kB / 1.104 GB, free: 10.74 MB / 0.8731 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.487e-05/0.8547, allocations: 11.52 kB / 1.104 GB, free: 10.74 MB / 0.8731 GB Notification: Performance of sorting global known variables: time 0.0004113/0.8551, allocations: 292.4 kB / 1.104 GB, free: 10.59 MB / 0.8731 GB Notification: Performance of sort global known variables: time 1.11e-07/0.8551, allocations: 0 / 1.104 GB, free: 10.59 MB / 0.8731 GB Notification: Performance of remove unused functions: time 0.0006411/0.8558, allocations: 156.7 kB / 1.104 GB, free: 10.55 MB / 0.8731 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 1 (conTSup.con.I.y) * Number of discrete variables: 4 ($whenCondition3,$whenCondition1,$whenCondition2,uEna.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (29): * Single equations (assignments): 28 * 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 0.001241/0.857, allocations: 1.046 MB / 1.105 GB, free: 9.727 MB / 0.8731 GB Notification: Performance of simCode: created initialization part: time 0.001127/0.8582, allocations: 0.5728 MB / 1.106 GB, free: 9.434 MB / 0.8731 GB Notification: Performance of simCode: created event and clocks part: time 3.937e-06/0.8582, allocations: 0 / 1.106 GB, free: 9.434 MB / 0.8731 GB Notification: Performance of simCode: created simulation system equations: time 0.0002569/0.8585, allocations: 120.3 kB / 1.106 GB, free: 9.395 MB / 0.8731 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005189/0.859, allocations: 67.33 kB / 1.106 GB, free: 9.367 MB / 0.8731 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00586/0.8649, allocations: 3.603 MB / 1.11 GB, free: 7.168 MB / 0.8731 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005049/0.8654, allocations: 0.8075 MB / 1.11 GB, free: 6.457 MB / 0.8731 GB Notification: Performance of simCode: alias equations: time 0.0002507/0.8656, allocations: 42.62 kB / 1.11 GB, free: 6.457 MB / 0.8731 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002513/0.8659, allocations: 145 kB / 1.111 GB, free: 6.355 MB / 0.8731 GB Notification: Performance of SimCode: time 1.773e-06/0.8659, allocations: 4 kB / 1.111 GB, free: 6.352 MB / 0.8731 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 1.843/2.709, allocations: 8.63 MB / 1.119 GB, free: 5.465 MB / 0.8731 GB Notification: Performance of buildModelFMU: Generate platform static: time 14.35/17.06, allocations: 13.16 kB / 1.119 GB, free: 5.457 MB / 0.8731 GB (rm -f Buildings_9_Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature.pipe ; mkfifo Buildings_9_Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature.pipe ; head -c 1048576 < Buildings_9_Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature.pipe >> ../files/Buildings_9_Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_9_Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature_res.mat --tempDir=temp_Buildings_9_Buildings_Examples_VAVReheat_BaseClasses_Controls_Examples_SupplyAirTemperature_fmu --startTime=0 --stopTime=3600 --timeout=50 --tolerance=1e-06 Buildings_9_Buildings_Examples_VAVReheat_BaseClasses_Controls_Examples_SupplyAirTemperature.fmu > Buildings_9_Buildings.Examples.VAVReheat.BaseClasses.Controls.Examples.SupplyAirTemperature.pipe 2>&1)