Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/package.mo", uses=false) Using package ThermoSysPro with version 4.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/package.mo) Running command: translateModel(ThermoSysPro.Examples.SimpleExamples.TestSensors,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors") translateModel(ThermoSysPro.Examples.SimpleExamples.TestSensors,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/package.mo): time 0.9362/0.9362, allocations: 150.9 MB / 166 MB, free: 14.52 MB / 142.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0002597/0.0002597, allocations: 19.97 kB / 204 MB, free: 10.05 MB / 174.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1326/0.1329, allocations: 31.32 MB / 235.3 MB, free: 5.465 MB / 190.1 MB Notification: Automatically loaded package Complex 4.0.0 due to uses annotation from Modelica. Notification: Automatically loaded package ModelicaServices 4.0.0 due to uses annotation from Modelica. Notification: Automatically loaded package Modelica 4.0.0 due to usage. Notification: Performance of NFInst.instantiate(ThermoSysPro.Examples.SimpleExamples.TestSensors): time 1.543/1.676, allocations: 293.9 MB / 0.5168 GB, free: 10.95 MB / 414.1 MB Notification: Performance of NFInst.instExpressions: time 0.1763/1.852, allocations: 187.7 MB / 0.7002 GB, free: 2.254 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000478/1.853, allocations: 8 kB / 0.7002 GB, free: 2.246 MB / 0.5762 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorH.mo:19:3-21:43:writable] Warning: Connector C1 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorH.mo:22:3-24:38:writable] Warning: Connector C2 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorQ.mo:19:3-21:43:writable] Warning: Connector C1 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorQ.mo:22:3-24:38:writable] Warning: Connector C2 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorQv.mo:33:3-35:24:writable] Warning: Connector C1 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorQv.mo:36:3-38:17:writable] Warning: Connector C2 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorP.mo:19:3-21:43:writable] Warning: Connector C1 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorP.mo:22:3-24:38:writable] Warning: Connector C2 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorT.mo:28:3-30:43:writable] Warning: Connector C1 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Sensors/SensorT.mo:31:3-33:38:writable] Warning: Connector C2 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/BoundaryConditions/SinkP.mo:33:3-34:47:writable] Warning: Connector C is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/BoundaryConditions/SourceP.mo:30:3-31:45:writable] Warning: Connector C is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/PressureLosses/LumpedStraightPipe.mo:49:3-50:42:writable] Warning: Connector C1 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/PressureLosses/LumpedStraightPipe.mo:51:3-53:37:writable] Warning: Connector C2 is not balanced: The number of potential variables (4) is not equal to the number of flow variables (0). Notification: Performance of NFTyping.typeComponents: time 0.0004476/1.853, allocations: 129.4 kB / 0.7003 GB, free: 2.121 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.0003904/1.854, allocations: 174.6 kB / 0.7005 GB, free: 1.949 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.03002/1.884, allocations: 8.697 MB / 0.7089 GB, free: 9.254 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.001479/1.885, allocations: 0.6885 MB / 0.7096 GB, free: 8.562 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0006759/1.886, allocations: 296.6 kB / 0.7099 GB, free: 8.285 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0005948/1.887, allocations: 274.8 kB / 0.7102 GB, free: 8.016 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0004688/1.887, allocations: 262.7 kB / 0.7104 GB, free: 7.758 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.0001383/1.887, allocations: 40 kB / 0.7105 GB, free: 7.719 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.3068/2.194, allocations: 20.07 MB / 0.7301 GB, free: 12.6 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.0001471/2.194, allocations: 98.03 kB / 0.7301 GB, free: 12.6 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0003113/2.195, allocations: 305.9 kB / 0.7304 GB, free: 12.6 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.01915/2.214, allocations: 10.14 MB / 0.7403 GB, free: 12.38 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 6.101e-06/2.214, allocations: 0 / 0.7403 GB, free: 12.38 MB / 0.5919 GB Notification: Performance of FrontEnd: time 1.152e-06/2.214, allocations: 0 / 0.7403 GB, free: 12.38 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 9.077e-06/2.214, allocations: 0 / 0.7403 GB, free: 12.38 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: 177 * Number of variables: 177 Notification: Performance of Generate backend data structure: time 0.004683/2.219, allocations: 1.963 MB / 0.7423 GB, free: 11.28 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 3.474e-05/2.219, allocations: 11.03 kB / 0.7423 GB, free: 11.28 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001032/2.219, allocations: 68.75 kB / 0.7423 GB, free: 11.25 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.000285/2.219, allocations: 328.8 kB / 0.7426 GB, free: 11.01 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.125e-05/2.219, allocations: 44.19 kB / 0.7427 GB, free: 11.01 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 5.048e-05/2.219, allocations: 51.59 kB / 0.7427 GB, free: 11.01 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007739/2.22, allocations: 0.6761 MB / 0.7434 GB, free: 10.8 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.472e-05/2.22, allocations: 0 / 0.7434 GB, free: 10.8 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.852e-05/2.22, allocations: 26.88 kB / 0.7434 GB, free: 10.8 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.066e-05/2.22, allocations: 30.53 kB / 0.7435 GB, free: 10.8 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005279/2.221, allocations: 395.8 kB / 0.7438 GB, free: 10.8 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 0.03503/2.256, allocations: 20.7 MB / 0.764 GB, free: 14.2 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005334/2.256, allocations: 234.8 kB / 0.7643 GB, free: 14.17 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002025/2.256, allocations: 170.6 kB / 0.7644 GB, free: 14.16 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.289/2.545, allocations: 150.5 MB / 0.9114 GB, free: 7.059 MB / 0.7481 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.228e-05/2.545, allocations: 42.5 kB / 0.9114 GB, free: 7.008 MB / 0.7481 GB Notification: Performance of pre-optimization done (n=62): time 2.124e-06/2.545, allocations: 1.094 kB / 0.9114 GB, free: 7.008 MB / 0.7481 GB Notification: Performance of matching and sorting (n=62): time 0.001981/2.547, allocations: 0.744 MB / 0.9121 GB, free: 6.434 MB / 0.7481 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.339e-05/2.547, allocations: 55.41 kB / 0.9122 GB, free: 6.367 MB / 0.7481 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004548/2.548, allocations: 385.7 kB / 0.9125 GB, free: 6.062 MB / 0.7481 GB Notification: Performance of collectPreVariables (initialization): time 2.546e-05/2.548, allocations: 36.95 kB / 0.9126 GB, free: 6.023 MB / 0.7481 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001586/2.548, allocations: 266.9 kB / 0.9128 GB, free: 5.812 MB / 0.7481 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001457/2.548, allocations: 196.2 kB / 0.913 GB, free: 5.645 MB / 0.7481 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001445/2.548, allocations: 104.8 kB / 0.9131 GB, free: 5.566 MB / 0.7481 GB Notification: Performance of setup shared object (initialization): time 0.0001249/2.549, allocations: 355.7 kB / 0.9135 GB, free: 5.23 MB / 0.7481 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002178/2.549, allocations: 144.6 kB / 0.9136 GB, free: 5.148 MB / 0.7481 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002858/2.549, allocations: 272.9 kB / 0.9139 GB, free: 4.918 MB / 0.7481 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.000539/2.55, allocations: 451.1 kB / 0.9143 GB, free: 4.594 MB / 0.7481 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.218e-06/2.55, allocations: 0 / 0.9143 GB, free: 4.594 MB / 0.7481 GB Notification: Performance of matching and sorting (n=83) (initialization): time 0.0008981/2.551, allocations: 0.5705 MB / 0.9148 GB, free: 4.207 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 2.03e-05/2.551, allocations: 8 kB / 0.9149 GB, free: 4.199 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.081e-05/2.551, allocations: 4 kB / 0.9149 GB, free: 4.195 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001045/2.552, allocations: 213.2 kB / 0.9151 GB, free: 4.016 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001294/2.552, allocations: 33.92 kB / 0.9151 GB, free: 3.992 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.000767/2.553, allocations: 0.7277 MB / 0.9158 GB, free: 3.324 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003012/2.553, allocations: 70.55 kB / 0.9159 GB, free: 3.266 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.911e-05/2.553, allocations: 12 kB / 0.9159 GB, free: 3.254 MB / 0.7481 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * Number of states: 0 () * Number of discrete variables: 14 (perteDP.C2.b,perteDP.C1.a,sourceP.C.b,puitsP.C.a,temperatureSensor.C2.b,temperatureSensor.C1.a,pressureSensor.C2.b,pressureSensor.C1.a,volumetricFlowSensor.C2.b,volumetricFlowSensor.C1.a,massFlowSensor.C2.b,massFlowSensor.C1.a,specificEnthalpySensor.C2.b,specificEnthalpySensor.C1.a) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (30): * Single equations (assignments): 25 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * 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 {(6,3)} Notification: Performance of prepare postOptimizeDAE: time 0.0001982/2.553, allocations: 182.6 kB / 0.9161 GB, free: 3.105 MB / 0.7481 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 7.97e-05/2.553, allocations: 43.34 kB / 0.9161 GB, free: 3.062 MB / 0.7481 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001167/2.554, allocations: 1.121 MB / 0.9172 GB, free: 2.254 MB / 0.7481 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.000595/2.555, allocations: 459.5 kB / 0.9176 GB, free: 1.941 MB / 0.7481 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.38e-06/2.555, allocations: 0 / 0.9176 GB, free: 1.941 MB / 0.7481 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.051e-06/2.555, allocations: 0 / 0.9176 GB, free: 1.941 MB / 0.7481 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001964/2.557, allocations: 1.348 MB / 0.9189 GB, free: 0.9102 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.731e-06/2.557, allocations: 0.625 kB / 0.919 GB, free: 0.9102 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001219/2.557, allocations: 38.73 kB / 0.919 GB, free: 0.8789 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0007907/2.558, allocations: 199.9 kB / 0.9192 GB, free: 0.7148 MB / 0.7481 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.336e-05/2.558, allocations: 7.688 kB / 0.9192 GB, free: 0.7109 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0006916/2.559, allocations: 0.7529 MB / 0.9199 GB, free: 32 kB / 0.7481 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.126e-06/2.559, allocations: 3.984 kB / 0.9199 GB, free: 28 kB / 0.7481 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009518/2.56, allocations: 0.6086 MB / 0.9205 GB, free: 15.55 MB / 0.7637 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001652/2.56, allocations: 162.2 kB / 0.9207 GB, free: 15.39 MB / 0.7637 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.051e-05/2.56, allocations: 11.69 kB / 0.9207 GB, free: 15.38 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002002/2.56, allocations: 11.16 kB / 0.9207 GB, free: 15.38 MB / 0.7637 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.271e-05/2.56, allocations: 19.72 kB / 0.9207 GB, free: 15.36 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.793e-05/2.56, allocations: 11.25 kB / 0.9207 GB, free: 15.35 MB / 0.7637 GB Notification: Performance of sorting global known variables: time 0.0003552/2.561, allocations: 335.4 kB / 0.921 GB, free: 15.11 MB / 0.7637 GB Notification: Performance of sort global known variables: time 1.092e-06/2.561, allocations: 0 / 0.921 GB, free: 15.11 MB / 0.7637 GB Notification: Performance of remove unused functions: time 0.004142/2.565, allocations: 1.539 MB / 0.9225 GB, free: 13.67 MB / 0.7637 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (27): * Single equations (assignments): 24 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * 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 {(6,4)} Notification: Performance of Backend phase and start with SimCode phase: time 0.008025/2.573, allocations: 2.358 MB / 0.9249 GB, free: 11.68 MB / 0.7637 GB Notification: Performance of simCode: created initialization part: time 0.001135/2.574, allocations: 0.5171 MB / 0.9254 GB, free: 11.31 MB / 0.7637 GB Notification: Performance of simCode: created event and clocks part: time 3.436e-06/2.574, allocations: 0 / 0.9254 GB, free: 11.31 MB / 0.7637 GB Notification: Performance of simCode: created simulation system equations: time 0.0005509/2.575, allocations: 235.1 kB / 0.9256 GB, free: 11.16 MB / 0.7637 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001294/2.576, allocations: 218.9 kB / 0.9258 GB, free: 10.99 MB / 0.7637 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001983/2.578, allocations: 1.266 MB / 0.927 GB, free: 9.816 MB / 0.7637 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004517/2.578, allocations: 0.8869 MB / 0.9279 GB, free: 8.898 MB / 0.7637 GB Notification: Performance of simCode: alias equations: time 0.0002386/2.579, allocations: 51.38 kB / 0.9279 GB, free: 8.844 MB / 0.7637 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 7.44e-05/2.579, allocations: 39.44 kB / 0.928 GB, free: 8.805 MB / 0.7637 GB Notification: Performance of SimCode: time 6.01e-07/2.579, allocations: 0 / 0.928 GB, free: 8.805 MB / 0.7637 GB Notification: Performance of Templates: time 0.073/2.652, allocations: 51.81 MB / 0.9786 GB, free: 5.387 MB / 0.8106 GB make -j1 -f ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors.makefile (rm -f ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors.pipe ; mkfifo ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors.pipe ; head -c 1048576 < ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors.pipe >> ../files/ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors.sim & ./ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors -abortSlowSimulation -alarm=480 -lv LOG_STATS > ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestSensors.pipe 2>&1)