Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent.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/IDEAS 3.0.0/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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: translateModel(IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent") translateModel(IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001829/0.001829, allocations: 108.7 kB / 16.41 MB, free: 6.027 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001942/0.001943, allocations: 186.2 kB / 17.34 MB, free: 5.633 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.467/1.467, allocations: 222.9 MB / 241 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.8277/0.8277, allocations: 132.2 MB / 423.4 MB, free: 6.574 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001295/0.001295, allocations: 62.66 kB / 0.582 GB, free: 23.68 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.231/0.2323, allocations: 80.21 MB / 0.6603 GB, free: 10.27 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent): time 0.8361/1.068, allocations: 184.1 MB / 0.8401 GB, free: 8.168 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.01812/1.087, allocations: 10.42 MB / 0.8503 GB, free: 15.73 MB / 0.6231 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002625/1.089, allocations: 33.28 kB / 0.8503 GB, free: 15.71 MB / 0.6231 GB Notification: Performance of NFTyping.typeComponents: time 0.00173/1.091, allocations: 452.7 kB / 0.8508 GB, free: 15.33 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.004857/1.096, allocations: 1.321 MB / 0.8521 GB, free: 14.3 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.005639/1.102, allocations: 1.772 MB / 0.8538 GB, free: 13.06 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.004215/1.106, allocations: 2.604 MB / 0.8563 GB, free: 11.55 MB / 0.6231 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002052/1.108, allocations: 1.123 MB / 0.8574 GB, free: 10.82 MB / 0.6231 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002698/1.111, allocations: 1.275 MB / 0.8587 GB, free: 10.07 MB / 0.6231 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001805/1.112, allocations: 1.27 MB / 0.8599 GB, free: 9.262 MB / 0.6231 GB Notification: Performance of NFPackage.collectConstants: time 0.0003438/1.113, allocations: 176.9 kB / 0.8601 GB, free: 9.254 MB / 0.6231 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003404/1.116, allocations: 1.547 MB / 0.8616 GB, free: 7.852 MB / 0.6231 GB Notification: Performance of NFScalarize.scalarize: time 0.0006615/1.117, allocations: 0.5882 MB / 0.8622 GB, free: 7.262 MB / 0.6231 GB Notification: Performance of NFVerifyModel.verify: time 0.001114/1.118, allocations: 0.8513 MB / 0.863 GB, free: 6.406 MB / 0.6231 GB Notification: Performance of NFConvertDAE.convert: time 0.004277/1.122, allocations: 2.68 MB / 0.8656 GB, free: 3.719 MB / 0.6231 GB Notification: Performance of FrontEnd - DAE generated: time 7.204e-06/1.122, allocations: 0 / 0.8656 GB, free: 3.719 MB / 0.6231 GB Notification: Performance of FrontEnd: time 1.804e-06/1.122, allocations: 0 / 0.8656 GB, free: 3.719 MB / 0.6231 GB Notification: Performance of Transformations before backend: time 3.072e-05/1.122, allocations: 0 / 0.8656 GB, free: 3.719 MB / 0.6231 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 174 * Number of variables: 174 Notification: Performance of Generate backend data structure: time 0.006091/1.129, allocations: 2.244 MB / 0.8678 GB, free: 1.422 MB / 0.6231 GB Notification: Performance of prepare preOptimizeDAE: time 5.6e-05/1.129, allocations: 8.031 kB / 0.8678 GB, free: 1.414 MB / 0.6231 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001243/1.13, allocations: 233.8 kB / 0.868 GB, free: 1.184 MB / 0.6231 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002806/1.133, allocations: 1.414 MB / 0.8694 GB, free: 15.71 MB / 0.6387 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001343/1.133, allocations: 69.92 kB / 0.8695 GB, free: 15.64 MB / 0.6387 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001965/1.133, allocations: 84 kB / 0.8696 GB, free: 15.56 MB / 0.6387 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001753/1.135, allocations: 0.994 MB / 0.8705 GB, free: 14.5 MB / 0.6387 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.576e-05/1.135, allocations: 3.938 kB / 0.8705 GB, free: 14.5 MB / 0.6387 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.249e-05/1.135, allocations: 32 kB / 0.8706 GB, free: 14.47 MB / 0.6387 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.912e-05/1.135, allocations: 20 kB / 0.8706 GB, free: 14.45 MB / 0.6387 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001832/1.137, allocations: 0.8793 MB / 0.8714 GB, free: 13.57 MB / 0.6387 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 0.007872/1.145, allocations: 4.791 MB / 0.8761 GB, free: 8.547 MB / 0.6387 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00156/1.146, allocations: 0.7472 MB / 0.8769 GB, free: 7.793 MB / 0.6387 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008095/1.147, allocations: 425.9 kB / 0.8773 GB, free: 7.371 MB / 0.6387 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0004575/1.147, allocations: 276.6 kB / 0.8775 GB, free: 7.047 MB / 0.6387 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.721e-05/1.148, allocations: 39 kB / 0.8776 GB, free: 7 MB / 0.6387 GB Notification: Performance of pre-optimization done (n=50): time 2.555e-06/1.148, allocations: 0 / 0.8776 GB, free: 7 MB / 0.6387 GB Notification: Performance of matching and sorting (n=50): time 0.005288/1.153, allocations: 1.572 MB / 0.8791 GB, free: 5.402 MB / 0.6387 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.115e-05/1.153, allocations: 63.84 kB / 0.8792 GB, free: 5.328 MB / 0.6387 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002874/1.156, allocations: 1.84 MB / 0.881 GB, free: 3.477 MB / 0.6387 GB Notification: Performance of collectPreVariables (initialization): time 0.0002322/1.156, allocations: 41.7 kB / 0.881 GB, free: 3.43 MB / 0.6387 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006107/1.157, allocations: 0.5833 MB / 0.8816 GB, free: 2.84 MB / 0.6387 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001894/1.157, allocations: 177.4 kB / 0.8817 GB, free: 2.664 MB / 0.6387 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000448/1.157, allocations: 214.5 kB / 0.8819 GB, free: 2.449 MB / 0.6387 GB Notification: Performance of setup shared object (initialization): time 0.0001679/1.157, allocations: 345.9 kB / 0.8823 GB, free: 2.105 MB / 0.6387 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001697/1.159, allocations: 0.9573 MB / 0.8832 GB, free: 1.145 MB / 0.6387 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002076/1.161, allocations: 1.295 MB / 0.8845 GB, free: 15.71 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00259/1.164, allocations: 1.526 MB / 0.886 GB, free: 14.12 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.556e-06/1.164, allocations: 0 / 0.886 GB, free: 14.12 MB / 0.6544 GB Notification: Performance of matching and sorting (n=121) (initialization): time 0.004864/1.169, allocations: 2.161 MB / 0.8881 GB, free: 11.95 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 4.41e-05/1.169, allocations: 13.8 kB / 0.8881 GB, free: 11.94 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.213e-05/1.169, allocations: 8 kB / 0.8881 GB, free: 11.93 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009729/1.17, allocations: 147.9 kB / 0.8882 GB, free: 11.79 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001051/1.171, allocations: 177.2 kB / 0.8884 GB, free: 11.61 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00136/1.172, allocations: 1.314 MB / 0.8897 GB, free: 10.25 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002038/1.174, allocations: 194.7 kB / 0.8899 GB, free: 10.06 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001215/1.174, allocations: 35.98 kB / 0.8899 GB, free: 10.02 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00222/1.177, allocations: 1.189 MB / 0.8911 GB, free: 8.828 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001977/1.179, allocations: 1.287 MB / 0.8923 GB, free: 7.406 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002516/1.181, allocations: 1.511 MB / 0.8938 GB, free: 5.832 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 7.053e-06/1.181, allocations: 4 kB / 0.8938 GB, free: 5.828 MB / 0.6544 GB Notification: Performance of matching and sorting (n=121) (initialization_lambda0): time 0.004339/1.186, allocations: 2.101 MB / 0.8959 GB, free: 3.715 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 1.914e-05/1.186, allocations: 4 kB / 0.8959 GB, free: 3.711 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2e-05/1.186, allocations: 9.812 kB / 0.8959 GB, free: 3.703 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.115e-05/1.186, allocations: 8.531 kB / 0.8959 GB, free: 3.695 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001019/1.187, allocations: 175.8 kB / 0.896 GB, free: 3.523 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.431e-05/1.187, allocations: 15.88 kB / 0.8961 GB, free: 3.508 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002009/1.189, allocations: 194.7 kB / 0.8962 GB, free: 3.316 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001037/1.189, allocations: 31.98 kB / 0.8963 GB, free: 3.285 MB / 0.6544 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 21 * Number of states: 0 () * Number of discrete variables: 14 (damPreInd.idx_sorted[13],damPreInd.idx_sorted[12],damPreInd.idx_sorted[11],damPreInd.idx_sorted[10],damPreInd.idx_sorted[9],damPreInd.idx_sorted[8],damPreInd.idx_sorted[7],damPreInd.idx_sorted[6],damPreInd.idx_sorted[5],damPreInd.idx_sorted[4],damPreInd.idx_sorted[3],damPreInd.idx_sorted[2],damPreInd.idx_sorted[1],conPID.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (74): * Single equations (assignments): 70 * Array equations: 1 * Algorithm blocks: 0 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems 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 {(1,10)} Notification: Performance of prepare postOptimizeDAE: time 0.0003773/1.189, allocations: 241.2 kB / 0.8965 GB, free: 3.043 MB / 0.6544 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000355/1.19, allocations: 130.2 kB / 0.8966 GB, free: 2.914 MB / 0.6544 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00238/1.192, allocations: 1.006 MB / 0.8976 GB, free: 1.895 MB / 0.6544 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.156e-05/1.192, allocations: 11.94 kB / 0.8976 GB, free: 1.883 MB / 0.6544 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.822e-06/1.192, allocations: 0 / 0.8976 GB, free: 1.883 MB / 0.6544 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.738e-06/1.192, allocations: 3.984 kB / 0.8976 GB, free: 1.879 MB / 0.6544 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004422/1.196, allocations: 2.238 MB / 0.8998 GB, free: 15.55 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.013e-06/1.196, allocations: 0 / 0.8998 GB, free: 15.55 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006097/1.197, allocations: 124.8 kB / 0.8999 GB, free: 15.43 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0007273/1.198, allocations: 137.6 kB / 0.9001 GB, free: 15.29 MB / 0.67 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.985e-05/1.198, allocations: 23.98 kB / 0.9001 GB, free: 15.27 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001122/1.199, allocations: 1.306 MB / 0.9014 GB, free: 13.91 MB / 0.67 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.595e-06/1.199, allocations: 0 / 0.9014 GB, free: 13.91 MB / 0.67 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002936/1.202, allocations: 1.592 MB / 0.9029 GB, free: 12.29 MB / 0.67 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000728/1.203, allocations: 327.1 kB / 0.9032 GB, free: 11.95 MB / 0.67 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001779/1.203, allocations: 12 kB / 0.9032 GB, free: 11.93 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001046/1.204, allocations: 71.97 kB / 0.9033 GB, free: 11.86 MB / 0.67 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001208/1.204, allocations: 36.39 kB / 0.9033 GB, free: 11.83 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.529e-05/1.204, allocations: 23.98 kB / 0.9034 GB, free: 11.8 MB / 0.67 GB Notification: Performance of sorting global known variables: time 0.002026/1.206, allocations: 1.313 MB / 0.9046 GB, free: 10.49 MB / 0.67 GB Notification: Performance of sort global known variables: time 2e-07/1.206, allocations: 0 / 0.9046 GB, free: 10.49 MB / 0.67 GB Notification: Performance of remove unused functions: time 0.002223/1.208, allocations: 0.6904 MB / 0.9053 GB, free: 9.801 MB / 0.67 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 2 (conPID.I.y,conPID.D.x) * 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 (44): * Single equations (assignments): 42 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems 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 {(1,11)} Notification: Performance of Backend phase and start with SimCode phase: time 0.000929/1.209, allocations: 344.9 kB / 0.9057 GB, free: 9.469 MB / 0.67 GB Notification: Performance of simCode: created initialization part: time 0.005491/1.215, allocations: 2.745 MB / 0.9083 GB, free: 6.707 MB / 0.67 GB Notification: Performance of simCode: created event and clocks part: time 9.197e-06/1.215, allocations: 4 kB / 0.9083 GB, free: 6.703 MB / 0.67 GB Notification: Performance of simCode: created simulation system equations: time 0.0009922/1.216, allocations: 443.1 kB / 0.9088 GB, free: 6.27 MB / 0.67 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002194/1.218, allocations: 421.4 kB / 0.9092 GB, free: 5.867 MB / 0.67 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003819/1.222, allocations: 2.22 MB / 0.9113 GB, free: 3.598 MB / 0.67 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008389/1.223, allocations: 1.171 MB / 0.9125 GB, free: 2.398 MB / 0.67 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006354/1.223, allocations: 107.4 kB / 0.9126 GB, free: 2.293 MB / 0.67 GB Notification: Performance of SimCode: time 8.22e-07/1.223, allocations: 0 / 0.9126 GB, free: 2.293 MB / 0.67 GB Notification: Performance of Templates: time 0.04573/1.269, allocations: 31.88 MB / 0.9437 GB, free: 2.57 MB / 0.7012 GB make -j1 -f IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent.makefile (rm -f IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent.pipe ; mkfifo IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent.pipe >> ../files/IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent.sim & ./IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.Actuators.Dampers.Validation.PressureIndependent.pipe 2>&1)