Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.Movers.Validation.FlowControlled_dp.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/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/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(IBPSA.Fluid.Movers.Validation.FlowControlled_dp,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_Movers_Validation_FlowControlled_dp",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Fluid.Movers.Validation.FlowControlled_dp,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_Movers_Validation_FlowControlled_dp",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 0.001643/0.001643, allocations: 107.9 kB / 16.4 MB, free: 6.492 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001703/0.001704, allocations: 193.2 kB / 17.34 MB, free: 5.766 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.291/1.291, allocations: 222.9 MB / 241 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.6913/0.6913, allocations: 115.3 MB / 406.5 MB, free: 6.172 MB / 318.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001174/0.001174, allocations: 71.12 kB / 0.5572 GB, free: 32.62 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1502/0.1514, allocations: 76.17 MB / 0.6316 GB, free: 4.895 MB / 478.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.Movers.Validation.FlowControlled_dp): time 0.6646/0.8161, allocations: 325.1 MB / 0.9491 GB, free: 7.191 MB / 0.7012 GB Notification: Performance of NFInst.instExpressions: time 0.03002/0.8461, allocations: 22.28 MB / 0.9709 GB, free: 0.8477 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004245/0.8504, allocations: 95.5 kB / 0.9709 GB, free: 0.7539 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.00623/0.8567, allocations: 2.367 MB / 0.9733 GB, free: 14.38 MB / 0.7325 GB Notification: Performance of NFTyping.typeBindings: time 0.01133/0.8681, allocations: 4.521 MB / 0.9777 GB, free: 9.844 MB / 0.7325 GB Notification: Performance of NFTyping.typeClassSections: time 0.006111/0.8742, allocations: 2.552 MB / 0.9802 GB, free: 7.305 MB / 0.7325 GB Notification: Performance of NFFlatten.flatten: time 0.0173/0.8915, allocations: 12.19 MB / 0.9921 GB, free: 11.09 MB / 0.7481 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004293/0.8958, allocations: 2.252 MB / 0.9943 GB, free: 8.801 MB / 0.7481 GB Notification: Performance of NFEvalConstants.evaluate: time 0.007467/0.9033, allocations: 3.266 MB / 0.9974 GB, free: 5.523 MB / 0.7481 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003845/0.9072, allocations: 1.884 MB / 0.9993 GB, free: 3.641 MB / 0.7481 GB Notification: Performance of NFPackage.collectConstants: time 0.0009123/0.9081, allocations: 243.9 kB / 0.9995 GB, free: 3.402 MB / 0.7481 GB Notification: Performance of NFFlatten.collectFunctions: time 0.008074/0.9162, allocations: 3.871 MB / 1.003 GB, free: 15.52 MB / 0.7637 GB Notification: Performance of NFScalarize.scalarize: time 0.001932/0.9182, allocations: 1.157 MB / 1.004 GB, free: 14.36 MB / 0.7637 GB Notification: Performance of NFVerifyModel.verify: time 0.003591/0.9218, allocations: 1.722 MB / 1.006 GB, free: 12.63 MB / 0.7637 GB Notification: Performance of NFConvertDAE.convert: time 0.01161/0.9334, allocations: 5.85 MB / 1.012 GB, free: 6.766 MB / 0.7637 GB Notification: Performance of FrontEnd - DAE generated: time 4.449e-06/0.9334, allocations: 0 / 1.012 GB, free: 6.766 MB / 0.7637 GB Notification: Performance of FrontEnd: time 1.163e-06/0.9335, allocations: 4 kB / 1.012 GB, free: 6.762 MB / 0.7637 GB Notification: Performance of Transformations before backend: time 0.0001749/0.9336, allocations: 0 / 1.012 GB, free: 6.762 MB / 0.7637 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 353 * Number of variables: 353 Notification: Performance of Generate backend data structure: time 0.009205/0.9428, allocations: 3.821 MB / 1.016 GB, free: 2.859 MB / 0.7637 GB Notification: Performance of prepare preOptimizeDAE: time 4.48e-05/0.9429, allocations: 11.97 kB / 1.016 GB, free: 2.848 MB / 0.7637 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0003026/0.9432, allocations: 202.9 kB / 1.016 GB, free: 2.641 MB / 0.7637 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.006924/0.9501, allocations: 1.1 MB / 1.017 GB, free: 1.535 MB / 0.7637 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00749/0.9576, allocations: 4.029 MB / 1.021 GB, free: 13.44 MB / 0.7794 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001207/0.9578, allocations: 118.7 kB / 1.021 GB, free: 13.32 MB / 0.7794 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004004/0.9582, allocations: 155.9 kB / 1.021 GB, free: 13.17 MB / 0.7794 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003867/0.9621, allocations: 1.727 MB / 1.023 GB, free: 11.37 MB / 0.7794 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.927e-05/0.9621, allocations: 7.875 kB / 1.023 GB, free: 11.36 MB / 0.7794 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000164/0.9623, allocations: 56 kB / 1.023 GB, free: 11.31 MB / 0.7794 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.259e-05/0.9624, allocations: 50.62 kB / 1.023 GB, free: 11.26 MB / 0.7794 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003708/0.9661, allocations: 1.458 MB / 1.024 GB, free: 9.793 MB / 0.7794 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 0.01362/0.9797, allocations: 8.696 MB / 1.033 GB, free: 476 kB / 0.7794 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002274/0.982, allocations: 1.045 MB / 1.034 GB, free: 15.38 MB / 0.795 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001116/0.9832, allocations: 0.4944 MB / 1.034 GB, free: 14.88 MB / 0.795 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002114/0.9834, allocations: 109.7 kB / 1.034 GB, free: 14.76 MB / 0.795 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.641e-05/0.9834, allocations: 43.16 kB / 1.034 GB, free: 14.7 MB / 0.795 GB Notification: Performance of pre-optimization done (n=71): time 2.715e-06/0.9834, allocations: 0 / 1.034 GB, free: 14.7 MB / 0.795 GB Notification: Performance of matching and sorting (n=71): time 0.004773/0.9882, allocations: 1.646 MB / 1.036 GB, free: 13.03 MB / 0.795 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.969e-05/0.9883, allocations: 60.06 kB / 1.036 GB, free: 12.96 MB / 0.795 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00541/0.9937, allocations: 2.991 MB / 1.039 GB, free: 9.965 MB / 0.795 GB Notification: Performance of collectPreVariables (initialization): time 0.0001619/0.9939, allocations: 41.7 kB / 1.039 GB, free: 9.918 MB / 0.795 GB Notification: Performance of collectInitialEqns (initialization): time 0.001156/0.995, allocations: 1.272 MB / 1.04 GB, free: 8.633 MB / 0.795 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002902/0.9953, allocations: 264.3 kB / 1.041 GB, free: 8.371 MB / 0.795 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0007229/0.9961, allocations: 427.1 kB / 1.041 GB, free: 7.949 MB / 0.795 GB Notification: Performance of setup shared object (initialization): time 9.171e-05/0.9962, allocations: 301.1 kB / 1.041 GB, free: 7.652 MB / 0.795 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001572/0.9977, allocations: 0.8168 MB / 1.042 GB, free: 6.828 MB / 0.795 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001931/0.9997, allocations: 1.318 MB / 1.043 GB, free: 5.305 MB / 0.795 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003075/1.003, allocations: 1.907 MB / 1.045 GB, free: 3.246 MB / 0.795 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.3e-05/1.003, allocations: 4 kB / 1.045 GB, free: 3.242 MB / 0.795 GB Notification: Performance of matching and sorting (n=255) (initialization): time 0.004655/1.007, allocations: 2.459 MB / 1.048 GB, free: 0.7656 MB / 0.795 GB Notification: Performance of prepare postOptimizeDAE: time 2.433e-05/1.007, allocations: 8 kB / 1.048 GB, free: 0.7578 MB / 0.795 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.505e-05/1.008, allocations: 12 kB / 1.048 GB, free: 0.7461 MB / 0.795 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003/1.008, allocations: 76.73 kB / 1.048 GB, free: 0.668 MB / 0.795 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001558/1.009, allocations: 391.5 kB / 1.048 GB, free: 292 kB / 0.795 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.316/1.325, allocations: 1.748 MB / 1.05 GB, free: 322.6 MB / 0.795 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002761/1.328, allocations: 239.7 kB / 1.05 GB, free: 322.6 MB / 0.795 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000183/1.328, allocations: 71.55 kB / 1.05 GB, free: 322.6 MB / 0.795 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002817/1.331, allocations: 1.44 MB / 1.051 GB, free: 322.5 MB / 0.795 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001821/1.333, allocations: 1.293 MB / 1.053 GB, free: 322 MB / 0.795 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003124/1.336, allocations: 1.867 MB / 1.055 GB, free: 321.3 MB / 0.795 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.206e-05/1.336, allocations: 8.656 kB / 1.055 GB, free: 321.3 MB / 0.795 GB Notification: Performance of matching and sorting (n=255) (initialization_lambda0): time 0.00546/1.342, allocations: 2.465 MB / 1.057 GB, free: 320.5 MB / 0.795 GB Notification: Performance of prepare postOptimizeDAE: time 2.731e-05/1.342, allocations: 14.94 kB / 1.057 GB, free: 320.5 MB / 0.795 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.237e-05/1.342, allocations: 13.09 kB / 1.057 GB, free: 320.5 MB / 0.795 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001742/1.342, allocations: 52.39 kB / 1.057 GB, free: 320.5 MB / 0.795 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00133/1.343, allocations: 353.6 kB / 1.057 GB, free: 320.4 MB / 0.795 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00102/1.344, allocations: 1.645 MB / 1.059 GB, free: 318.8 MB / 0.795 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002214/1.347, allocations: 192.3 kB / 1.059 GB, free: 318.8 MB / 0.795 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.00013/1.347, allocations: 67.66 kB / 1.059 GB, free: 318.8 MB / 0.795 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 50 * 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 initialization (185): * Single equations (assignments): 178 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * 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): 2 systems {1, 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 {(1,4)} Notification: Performance of prepare postOptimizeDAE: time 0.000424/1.347, allocations: 266.6 kB / 1.059 GB, free: 318.6 MB / 0.795 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003553/1.347, allocations: 272.1 kB / 1.06 GB, free: 318.5 MB / 0.795 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003216/1.351, allocations: 1.242 MB / 1.061 GB, free: 318 MB / 0.795 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.556e-05/1.351, allocations: 7.672 kB / 1.061 GB, free: 318 MB / 0.795 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.184e-06/1.351, allocations: 1.875 kB / 1.061 GB, free: 318 MB / 0.795 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002366/1.353, allocations: 1.036 MB / 1.062 GB, free: 317.5 MB / 0.795 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006293/1.359, allocations: 3.27 MB / 1.065 GB, free: 315.9 MB / 0.795 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.341e-06/1.359, allocations: 1.219 kB / 1.065 GB, free: 315.9 MB / 0.795 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001144/1.361, allocations: 227.3 kB / 1.065 GB, free: 315.9 MB / 0.795 GB Notification: Performance of postOpt tearingSystem (simulation): time 8.08e-05/1.361, allocations: 29.64 kB / 1.065 GB, free: 315.9 MB / 0.795 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.179e-05/1.361, allocations: 21 kB / 1.065 GB, free: 315.9 MB / 0.795 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001193/1.362, allocations: 3.292 MB / 1.069 GB, free: 312.6 MB / 0.795 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.395e-06/1.362, allocations: 1.281 kB / 1.069 GB, free: 312.6 MB / 0.795 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004001/1.366, allocations: 1.832 MB / 1.07 GB, free: 311.7 MB / 0.795 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001058/1.367, allocations: 475 kB / 1.071 GB, free: 311.4 MB / 0.795 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002947/1.367, allocations: 16.47 kB / 1.071 GB, free: 311.4 MB / 0.795 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001264/1.369, allocations: 92.03 kB / 1.071 GB, free: 311.4 MB / 0.795 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001242/1.369, allocations: 58.25 kB / 1.071 GB, free: 311.3 MB / 0.795 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.402e-05/1.369, allocations: 30.88 kB / 1.071 GB, free: 311.3 MB / 0.795 GB Notification: Performance of sorting global known variables: time 0.002813/1.372, allocations: 1.991 MB / 1.073 GB, free: 310.6 MB / 0.795 GB Notification: Performance of sort global known variables: time 1.7e-07/1.372, allocations: 1.125 kB / 1.073 GB, free: 310.6 MB / 0.795 GB Notification: Performance of remove unused functions: time 0.002923/1.375, allocations: 1.273 MB / 1.074 GB, free: 310.4 MB / 0.795 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 3 (floMacDyn.vol.dynBal.medium.Xi[1],floMacDyn.vol.dynBal.U,floMacDyn.vol.dynBal.m) * 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 (71): * Single equations (assignments): 67 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 3 * 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): 3 systems {1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.004588/1.379, allocations: 2.785 MB / 1.077 GB, free: 309 MB / 0.795 GB Notification: Performance of simCode: created initialization part: time 0.005083/1.384, allocations: 2.846 MB / 1.08 GB, free: 308 MB / 0.795 GB Notification: Performance of simCode: created event and clocks part: time 5.07e-06/1.384, allocations: 0 / 1.08 GB, free: 308 MB / 0.795 GB Notification: Performance of simCode: created simulation system equations: time 0.001174/1.385, allocations: 0.614 MB / 1.08 GB, free: 307.7 MB / 0.795 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005045/1.391, allocations: 1.448 MB / 1.082 GB, free: 307.4 MB / 0.795 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02415/1.415, allocations: 19.53 MB / 1.101 GB, free: 290.1 MB / 0.795 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001105/1.416, allocations: 1.939 MB / 1.103 GB, free: 288.1 MB / 0.795 GB Notification: Performance of simCode: alias equations: time 0.00229/1.418, allocations: 0.7163 MB / 1.103 GB, free: 287.5 MB / 0.795 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001179/1.419, allocations: 1.19 MB / 1.105 GB, free: 286.3 MB / 0.795 GB Notification: Performance of SimCode: time 8.92e-07/1.419, allocations: 0 / 1.105 GB, free: 286.3 MB / 0.795 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1022/1.521, allocations: 73.79 MB / 1.177 GB, free: 213.2 MB / 0.795 GB Notification: Performance of buildModelFMU: Generate platform static: time 19.89/21.41, allocations: 6.203 kB / 1.177 GB, free: 213.2 MB / 0.795 GB (rm -f IBPSA_latest_IBPSA.Fluid.Movers.Validation.FlowControlled_dp.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.Movers.Validation.FlowControlled_dp.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.Movers.Validation.FlowControlled_dp.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.Movers.Validation.FlowControlled_dp.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IBPSA_latest_IBPSA_Fluid_Movers_Validation_FlowControlled_dp_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 IBPSA_latest_IBPSA_Fluid_Movers_Validation_FlowControlled_dp.fmu > IBPSA_latest_IBPSA.Fluid.Movers.Validation.FlowControlled_dp.pipe 2>&1)