Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump.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.TestDynamicCentrifugalPump,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump") translateModel(ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/package.mo): time 0.7839/0.7839, allocations: 150.9 MB / 166 MB, free: 14.4 MB / 142.1 MB Notification: Performance of FrontEnd - loaded program: time 0.000268/0.000268, allocations: 23.95 kB / 204 MB, free: 9.695 MB / 174.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1406/0.1409, allocations: 31.31 MB / 235.4 MB, free: 5.457 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.TestDynamicCentrifugalPump): time 1.552/1.693, allocations: 293.9 MB / 0.5168 GB, free: 12.41 MB / 414.1 MB Notification: Performance of NFInst.instExpressions: time 0.03838/1.731, allocations: 34.22 MB / 0.5503 GB, free: 10.33 MB / 446.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003027/1.731, allocations: 0 / 0.5503 GB, free: 10.33 MB / 446.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/ElectroMechanics/Machines/SynchronousMotor.mo:36:3-38:45:writable] Warning: Connector C is not balanced: The number of potential variables (2) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Machines/DynamicCentrifugalPump.mo:71:3-75:23:writable] Warning: Connector M is not balanced: The number of potential variables (2) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/WaterSteam/Machines/DynamicCentrifugalPump.mo:76:3-77:48: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/Machines/DynamicCentrifugalPump.mo:78:3-79:45: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/Volumes/Tank.mo:71:3-72:53:writable] Warning: Connector Ce1 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/Volumes/Tank.mo:73:3-74:53:writable] Warning: Connector Cs2 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/Volumes/Tank.mo:78:3-79:55:writable] Warning: Connector Ce2 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/Volumes/Tank.mo:80:3-81:51:writable] Warning: Connector Cs1 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/ControlValve.mo:45:3-47:43: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/PressureLosses/ControlValve.mo:48:3-50:38: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/ElectroMechanics/Machines/Shaft.mo:13:3-15:47:writable] Warning: Connector C2 is not balanced: The number of potential variables (2) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermoSysPro 4.0.0-master/ElectroMechanics/Machines/Shaft.mo:16:3-18:49:writable] Warning: Connector C1 is not balanced: The number of potential variables (2) is not equal to the number of flow variables (0). Notification: Performance of NFTyping.typeComponents: time 0.0004829/1.732, allocations: 133.2 kB / 0.5504 GB, free: 10.2 MB / 446.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0003266/1.732, allocations: 170.7 kB / 0.5505 GB, free: 10.03 MB / 446.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0179/1.75, allocations: 6.516 MB / 0.5569 GB, free: 3.508 MB / 446.1 MB Notification: Performance of NFFlatten.flatten: time 0.0009493/1.751, allocations: 0.8031 MB / 0.5577 GB, free: 2.699 MB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0003816/1.751, allocations: 302.5 kB / 0.558 GB, free: 2.402 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.000399/1.752, allocations: 306.8 kB / 0.5583 GB, free: 2.102 MB / 446.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0003604/1.752, allocations: 346.4 kB / 0.5586 GB, free: 1.762 MB / 446.1 MB Notification: Performance of NFPackage.collectConstants: time 7.488e-05/1.752, allocations: 36 kB / 0.5586 GB, free: 1.727 MB / 446.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.02466/1.777, allocations: 14.92 MB / 0.5732 GB, free: 2.785 MB / 462.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002028/1.777, allocations: 135.4 kB / 0.5733 GB, free: 2.652 MB / 462.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0003965/1.778, allocations: 314.3 kB / 0.5736 GB, free: 2.344 MB / 462.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01769/1.795, allocations: 7.953 MB / 0.5814 GB, free: 10.37 MB / 478.1 MB Notification: Performance of FrontEnd - DAE generated: time 6.913e-06/1.795, allocations: 0 / 0.5814 GB, free: 10.37 MB / 478.1 MB Notification: Performance of FrontEnd: time 1.633e-06/1.795, allocations: 0 / 0.5814 GB, free: 10.37 MB / 478.1 MB Notification: Performance of Transformations before backend: time 9.477e-06/1.795, allocations: 0 / 0.5814 GB, free: 10.37 MB / 478.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 146 * Number of variables: 146 Notification: Performance of Generate backend data structure: time 0.005743/1.801, allocations: 1.919 MB / 0.5833 GB, free: 8.395 MB / 478.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.769e-05/1.801, allocations: 12.02 kB / 0.5833 GB, free: 8.383 MB / 478.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001522/1.801, allocations: 75.09 kB / 0.5834 GB, free: 8.309 MB / 478.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004364/1.802, allocations: 368.7 kB / 0.5837 GB, free: 7.906 MB / 478.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.683e-05/1.802, allocations: 66.7 kB / 0.5838 GB, free: 7.836 MB / 478.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 8.919e-05/1.802, allocations: 63.84 kB / 0.5838 GB, free: 7.773 MB / 478.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001506/1.804, allocations: 0.7262 MB / 0.5845 GB, free: 7.008 MB / 478.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.799e-05/1.804, allocations: 1.312 kB / 0.5845 GB, free: 7.008 MB / 478.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.335e-05/1.804, allocations: 24 kB / 0.5846 GB, free: 6.984 MB / 478.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.813e-05/1.804, allocations: 23.88 kB / 0.5846 GB, free: 6.961 MB / 478.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001862/1.806, allocations: 0.6871 MB / 0.5853 GB, free: 6.273 MB / 478.1 MB 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 0.003564/1.809, allocations: 3.345 MB / 0.5885 GB, free: 2.625 MB / 478.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.002241/1.811, allocations: 0.7256 MB / 0.5892 GB, free: 1.891 MB / 478.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0009055/1.812, allocations: 358.4 kB / 0.5896 GB, free: 1.539 MB / 478.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.07704/1.889, allocations: 44.14 MB / 0.6327 GB, free: 15.85 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001207/1.891, allocations: 443.7 kB / 0.6331 GB, free: 15.4 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=80): time 2.845e-06/1.891, allocations: 0 / 0.6331 GB, free: 15.4 MB / 0.5294 GB Notification: Performance of matching and sorting (n=80): time 0.006819/1.897, allocations: 1.961 MB / 0.635 GB, free: 13.38 MB / 0.5294 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.011e-05/1.897, allocations: 111.2 kB / 0.6351 GB, free: 13.25 MB / 0.5294 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000371/1.898, allocations: 369.5 kB / 0.6355 GB, free: 12.88 MB / 0.5294 GB Notification: Performance of collectPreVariables (initialization): time 4.64e-05/1.898, allocations: 37.7 kB / 0.6355 GB, free: 12.84 MB / 0.5294 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001689/1.898, allocations: 252.7 kB / 0.6358 GB, free: 12.58 MB / 0.5294 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001879/1.898, allocations: 275.9 kB / 0.636 GB, free: 12.31 MB / 0.5294 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002108/1.899, allocations: 150.1 kB / 0.6362 GB, free: 12.16 MB / 0.5294 GB Notification: Performance of setup shared object (initialization): time 0.0001328/1.899, allocations: 366.8 kB / 0.6365 GB, free: 11.79 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000888/1.9, allocations: 305.4 kB / 0.6368 GB, free: 11.49 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009583/1.901, allocations: 453.3 kB / 0.6372 GB, free: 10.99 MB / 0.5294 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.007315/1.908, allocations: 1.985 MB / 0.6392 GB, free: 8.922 MB / 0.5294 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.043e-06/1.908, allocations: 4 kB / 0.6392 GB, free: 8.918 MB / 0.5294 GB Notification: Performance of matching and sorting (n=107) (initialization): time 0.003051/1.911, allocations: 1.208 MB / 0.6404 GB, free: 7.695 MB / 0.5294 GB Notification: Performance of prepare postOptimizeDAE: time 5.701e-05/1.911, allocations: 45.52 kB / 0.6404 GB, free: 7.645 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.446e-05/1.911, allocations: 4 kB / 0.6404 GB, free: 7.641 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.00353/1.915, allocations: 0.8953 MB / 0.6413 GB, free: 6.738 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007575/1.915, allocations: 151.8 kB / 0.6414 GB, free: 6.59 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00212/1.917, allocations: 1.758 MB / 0.6431 GB, free: 4.781 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000663/1.918, allocations: 111.2 kB / 0.6432 GB, free: 4.672 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.996e-05/1.918, allocations: 27.98 kB / 0.6433 GB, free: 4.645 MB / 0.5294 GB Warning: Assuming fixed start value for the following 1 variables: Pulse1.T0:DISCRETE(fixed = true protected = true ) type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 19 * Number of states: 0 () * Number of discrete variables: 14 (Valve.C2.b,Valve.C1.a,Tank.Cs1.b,Tank.Ce2.a,Tank.Cs2.b,Tank.Ce1.a,DynamicCentrifugalPump1.C2.b,DynamicCentrifugalPump1.C1.a,$PRE.Pulse1.T0,Pulse1.yL.signal,Pulse1.T0,$whenCondition1,Tank.Cs1.a,Tank.Ce1.b) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (46): * Single equations (assignments): 43 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(8,25), (1,1)} Notification: Performance of prepare postOptimizeDAE: time 0.0003496/1.919, allocations: 226.2 kB / 0.6435 GB, free: 4.41 MB / 0.5294 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 8.469e-05/1.919, allocations: 55.25 kB / 0.6435 GB, free: 4.355 MB / 0.5294 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002819/1.921, allocations: 1.42 MB / 0.6449 GB, free: 2.918 MB / 0.5294 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.002382/1.924, allocations: 1.134 MB / 0.646 GB, free: 1.762 MB / 0.5294 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.018e-05/1.924, allocations: 0 / 0.646 GB, free: 1.762 MB / 0.5294 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.328e-05/1.924, allocations: 15.86 kB / 0.6461 GB, free: 1.746 MB / 0.5294 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004211/1.928, allocations: 2.365 MB / 0.6484 GB, free: 15.31 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.619e-06/1.928, allocations: 0 / 0.6484 GB, free: 15.31 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001077/1.929, allocations: 207.8 kB / 0.6486 GB, free: 15.11 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001681/1.931, allocations: 0.5736 MB / 0.6491 GB, free: 14.53 MB / 0.545 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.559e-05/1.931, allocations: 27.98 kB / 0.6491 GB, free: 14.5 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001462/1.932, allocations: 1.557 MB / 0.6507 GB, free: 12.89 MB / 0.545 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.623e-06/1.932, allocations: 0 / 0.6507 GB, free: 12.89 MB / 0.545 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003599/1.936, allocations: 1.777 MB / 0.6524 GB, free: 11.09 MB / 0.545 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002625/1.936, allocations: 207.9 kB / 0.6526 GB, free: 10.87 MB / 0.545 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.463e-05/1.936, allocations: 23.94 kB / 0.6526 GB, free: 10.84 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006074/1.937, allocations: 71.86 kB / 0.6527 GB, free: 10.77 MB / 0.545 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001552/1.937, allocations: 64.91 kB / 0.6528 GB, free: 10.71 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.94e-05/1.937, allocations: 27.98 kB / 0.6528 GB, free: 10.68 MB / 0.545 GB Notification: Performance of sorting global known variables: time 0.0002343/1.938, allocations: 243.2 kB / 0.653 GB, free: 10.45 MB / 0.545 GB Notification: Performance of sort global known variables: time 1.3e-07/1.938, allocations: 0 / 0.653 GB, free: 10.45 MB / 0.545 GB Notification: Performance of remove unused functions: time 0.002976/1.941, allocations: 1.183 MB / 0.6542 GB, free: 9.262 MB / 0.545 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 7 (Motor1.w,Motor1.Im,DynamicCentrifugalPump1.w,DynamicCentrifugalPump1.h,Tank.z,Tank.h,Shaft1.delta) * Number of discrete variables: 3 ($whenCondition1,Pulse1.T0,Pulse1.yL.signal) * Number of discrete states: 3 (Pulse1.yL.signal,Pulse1.T0,$whenCondition1) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (66): * Single equations (assignments): 63 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(5,16), (1,1)} Notification: Performance of Backend phase and start with SimCode phase: time 0.004792/1.945, allocations: 1.652 MB / 0.6558 GB, free: 7.617 MB / 0.545 GB Notification: Performance of simCode: created initialization part: time 0.003072/1.948, allocations: 1.161 MB / 0.6569 GB, free: 6.43 MB / 0.545 GB Notification: Performance of simCode: created event and clocks part: time 2.845e-06/1.948, allocations: 1 kB / 0.6569 GB, free: 6.43 MB / 0.545 GB Notification: Performance of simCode: created simulation system equations: time 0.001624/1.95, allocations: 0.6369 MB / 0.6575 GB, free: 5.777 MB / 0.545 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001039/1.951, allocations: 194.2 kB / 0.6577 GB, free: 5.586 MB / 0.545 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003376/1.955, allocations: 2.149 MB / 0.6598 GB, free: 3.41 MB / 0.545 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000456/1.955, allocations: 0.9428 MB / 0.6607 GB, free: 2.441 MB / 0.545 GB Notification: Performance of simCode: alias equations: time 0.0003135/1.955, allocations: 68.53 kB / 0.6608 GB, free: 2.375 MB / 0.545 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001416/1.955, allocations: 43.42 kB / 0.6608 GB, free: 2.332 MB / 0.545 GB Notification: Performance of SimCode: time 4.91e-07/1.955, allocations: 0 / 0.6608 GB, free: 2.332 MB / 0.545 GB Notification: Performance of Templates: time 0.2177/2.173, allocations: 46.88 MB / 0.7066 GB, free: 222.4 MB / 0.5762 GB make -j1 -f ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump.makefile (rm -f ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump.pipe ; mkfifo ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump.pipe ; head -c 1048576 < ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump.pipe >> ../files/ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump.sim & ./ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump -abortSlowSimulation -alarm=480 -lv LOG_STATS > ThermoSysPro_ThermoSysPro.Examples.SimpleExamples.TestDynamicCentrifugalPump.pipe 2>&1)