Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_10_Buildings.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static.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 10.1.1-maint.10.0.x/package.mo", uses=false) Using package Buildings with version 10.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.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.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static,fileNamePrefix="Buildings_10_Buildings_Fluid_HeatPumps_Validation_ScrollWaterToWater_Static",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static,fileNamePrefix="Buildings_10_Buildings_Fluid_HeatPumps_Validation_ScrollWaterToWater_Static",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 0.001211/0.001211, allocations: 108 kB / 15.61 MB, free: 152 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00122/0.00122, allocations: 192.8 kB / 16.53 MB, free: 6.664 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.335/1.335, allocations: 222.9 MB / 240.2 MB, free: 4.418 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.x/package.mo): time 2.403/2.403, allocations: 437 MB / 0.7104 GB, free: 5.148 MB / 0.5606 GB Notification: Performance of FrontEnd - loaded program: time 0.001357/0.001357, allocations: 71.89 kB / 0.8693 GB, free: 4.574 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.5243/0.5257, allocations: 151.6 MB / 1.017 GB, free: 2.508 MB / 0.7637 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static): time 0.06594/0.5917, allocations: 69.94 MB / 1.086 GB, free: 12.32 MB / 0.8419 GB Notification: Performance of NFInst.instExpressions: time 0.01922/0.6109, allocations: 14.41 MB / 1.1 GB, free: 13.88 MB / 0.8575 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002159/0.6131, allocations: 71.62 kB / 1.1 GB, free: 13.8 MB / 0.8575 GB Notification: Performance of NFTyping.typeComponents: time 0.002371/0.6155, allocations: 0.9277 MB / 1.101 GB, free: 12.87 MB / 0.8575 GB Notification: Performance of NFTyping.typeBindings: time 0.006171/0.6217, allocations: 2.534 MB / 1.103 GB, free: 10.33 MB / 0.8575 GB Notification: Performance of NFTyping.typeClassSections: time 0.004558/0.6263, allocations: 1.966 MB / 1.105 GB, free: 8.379 MB / 0.8575 GB Notification: Performance of NFFlatten.flatten: time 0.005183/0.6315, allocations: 4.636 MB / 1.11 GB, free: 3.73 MB / 0.8575 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002164/0.6337, allocations: 1.61 MB / 1.111 GB, free: 2.086 MB / 0.8575 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003422/0.6371, allocations: 1.76 MB / 1.113 GB, free: 332 kB / 0.8575 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001884/0.639, allocations: 1.264 MB / 1.114 GB, free: 15.05 MB / 0.8731 GB Notification: Performance of NFPackage.collectConstants: time 0.0004096/0.6394, allocations: 196 kB / 1.114 GB, free: 14.86 MB / 0.8731 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00386/0.6433, allocations: 1.916 MB / 1.116 GB, free: 12.95 MB / 0.8731 GB Notification: Performance of NFScalarize.scalarize: time 0.0005187/0.6438, allocations: 470.5 kB / 1.117 GB, free: 12.48 MB / 0.8731 GB Notification: Performance of NFVerifyModel.verify: time 0.001361/0.6452, allocations: 1.027 MB / 1.118 GB, free: 11.45 MB / 0.8731 GB Notification: Performance of NFConvertDAE.convert: time 0.004632/0.6498, allocations: 3.483 MB / 1.121 GB, free: 7.961 MB / 0.8731 GB Notification: Performance of FrontEnd - DAE generated: time 3.547e-06/0.6498, allocations: 0 / 1.121 GB, free: 7.961 MB / 0.8731 GB Notification: Performance of FrontEnd: time 1.292e-06/0.6499, allocations: 0 / 1.121 GB, free: 7.961 MB / 0.8731 GB Notification: Performance of Transformations before backend: time 1.884e-05/0.6499, allocations: 0 / 1.121 GB, free: 7.961 MB / 0.8731 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 296 * Number of variables: 296 Notification: Performance of Generate backend data structure: time 0.003728/0.6536, allocations: 2.313 MB / 1.123 GB, free: 5.578 MB / 0.8731 GB Notification: Performance of prepare preOptimizeDAE: time 3.771e-05/0.6537, allocations: 12.03 kB / 1.123 GB, free: 5.566 MB / 0.8731 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002024/0.6539, allocations: 181.6 kB / 1.124 GB, free: 5.379 MB / 0.8731 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005625/0.6595, allocations: 0.6895 MB / 1.124 GB, free: 4.688 MB / 0.8731 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002197/0.6617, allocations: 1.518 MB / 1.126 GB, free: 3.113 MB / 0.8731 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000129/0.6619, allocations: 136 kB / 1.126 GB, free: 2.973 MB / 0.8731 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001758/0.662, allocations: 123.9 kB / 1.126 GB, free: 2.852 MB / 0.8731 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003787/0.6658, allocations: 1.65 MB / 1.128 GB, free: 1.105 MB / 0.8731 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.464e-05/0.6659, allocations: 0 / 1.128 GB, free: 1.105 MB / 0.8731 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001501/0.666, allocations: 63.97 kB / 1.128 GB, free: 1.043 MB / 0.8731 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.357e-05/0.6661, allocations: 43.92 kB / 1.128 GB, free: 1 MB / 0.8731 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004855/0.6709, allocations: 1.476 MB / 1.129 GB, free: 15.51 MB / 0.8887 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 0.009674/0.6806, allocations: 7.322 MB / 1.136 GB, free: 7.812 MB / 0.8887 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002456/0.6831, allocations: 0.8166 MB / 1.137 GB, free: 6.988 MB / 0.8887 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001794/0.6849, allocations: 0.5118 MB / 1.138 GB, free: 6.477 MB / 0.8887 GB Notification: Performance of preOpt evalFunc (simulation): time 0.00127/0.6862, allocations: 1.267 MB / 1.139 GB, free: 4.934 MB / 0.8887 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.325e-05/0.6863, allocations: 51.06 kB / 1.139 GB, free: 4.875 MB / 0.8887 GB Notification: Performance of pre-optimization done (n=70): time 2.605e-06/0.6863, allocations: 0 / 1.139 GB, free: 4.875 MB / 0.8887 GB Notification: Performance of matching and sorting (n=70): time 0.03084/0.7171, allocations: 4.139 MB / 1.143 GB, free: 0.6992 MB / 0.8887 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.088e-05/0.7172, allocations: 115.4 kB / 1.143 GB, free: 0.5625 MB / 0.8887 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002231/0.7194, allocations: 1.379 MB / 1.144 GB, free: 15.17 MB / 0.9044 GB Notification: Performance of collectPreVariables (initialization): time 0.0001326/0.7196, allocations: 49.69 kB / 1.144 GB, free: 15.12 MB / 0.9044 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005882/0.7202, allocations: 0.6802 MB / 1.145 GB, free: 14.43 MB / 0.9044 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002423/0.7204, allocations: 240.5 kB / 1.145 GB, free: 14.19 MB / 0.9044 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003862/0.7208, allocations: 230.3 kB / 1.146 GB, free: 13.96 MB / 0.9044 GB Notification: Performance of setup shared object (initialization): time 0.0001262/0.7209, allocations: 341.9 kB / 1.146 GB, free: 13.62 MB / 0.9044 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002069/0.723, allocations: 0.5005 MB / 1.146 GB, free: 13.12 MB / 0.9044 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002276/0.7253, allocations: 0.7745 MB / 1.147 GB, free: 12.23 MB / 0.9044 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003945/0.7293, allocations: 1.144 MB / 1.148 GB, free: 11 MB / 0.9044 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.386e-06/0.7293, allocations: 7.984 kB / 1.148 GB, free: 11 MB / 0.9044 GB Notification: Performance of matching and sorting (n=110) (initialization): time 0.005575/0.7349, allocations: 1.574 MB / 1.15 GB, free: 9.41 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 2.106e-05/0.7349, allocations: 11.94 kB / 1.15 GB, free: 9.398 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.236e-05/0.7349, allocations: 12 kB / 1.15 GB, free: 9.387 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002081/0.737, allocations: 0.564 MB / 1.15 GB, free: 8.824 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001394/0.7384, allocations: 243.6 kB / 1.151 GB, free: 8.586 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002036/0.7405, allocations: 1.166 MB / 1.152 GB, free: 7.395 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002262/0.7427, allocations: 230.6 kB / 1.152 GB, free: 7.168 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001118/0.7429, allocations: 55.94 kB / 1.152 GB, free: 7.113 MB / 0.9044 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.002537/0.7454, allocations: 0.7961 MB / 1.153 GB, free: 6.316 MB / 0.9044 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002259/0.7477, allocations: 0.7705 MB / 1.153 GB, free: 5.438 MB / 0.9044 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.003841/0.7515, allocations: 1.137 MB / 1.155 GB, free: 4.211 MB / 0.9044 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.248e-06/0.7516, allocations: 0 / 1.155 GB, free: 4.211 MB / 0.9044 GB Notification: Performance of matching and sorting (n=110) (initialization_lambda0): time 0.005399/0.757, allocations: 1.589 MB / 1.156 GB, free: 2.609 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 1.391e-05/0.757, allocations: 8 kB / 1.156 GB, free: 2.602 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.866e-06/0.757, allocations: 4 kB / 1.156 GB, free: 2.598 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001912/0.7589, allocations: 0.5658 MB / 1.157 GB, free: 2.031 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00134/0.7603, allocations: 239.6 kB / 1.157 GB, free: 1.797 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001987/0.7623, allocations: 1.177 MB / 1.158 GB, free: 0.5938 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00216/0.7644, allocations: 194.1 kB / 1.158 GB, free: 416 kB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001081/0.7646, allocations: 51.95 kB / 1.158 GB, free: 364 kB / 0.9044 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 28 * Number of states: 0 () * Number of discrete variables: 2 (heaPum.com.isOn,$PRE.heaPum.com.isOn) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (82): * Single equations (assignments): 81 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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 {(4,25)} Notification: Performance of prepare postOptimizeDAE: time 0.0002892/0.7649, allocations: 240 kB / 1.159 GB, free: 116 kB / 0.9044 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003634/0.7652, allocations: 150.3 kB / 1.159 GB, free: 15.96 MB / 0.92 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004678/0.7699, allocations: 1.359 MB / 1.16 GB, free: 14.58 MB / 0.92 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.332e-05/0.7699, allocations: 11.94 kB / 1.16 GB, free: 14.57 MB / 0.92 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.719e-06/0.7699, allocations: 0 / 1.16 GB, free: 14.57 MB / 0.92 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00403/0.774, allocations: 1.176 MB / 1.161 GB, free: 13.36 MB / 0.92 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.007879/0.7819, allocations: 3.469 MB / 1.165 GB, free: 9.688 MB / 0.92 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.434e-06/0.7819, allocations: 4.312 kB / 1.165 GB, free: 9.684 MB / 0.92 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0009121/0.7828, allocations: 139.8 kB / 1.165 GB, free: 9.547 MB / 0.92 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001878/0.7847, allocations: 0.5512 MB / 1.165 GB, free: 8.992 MB / 0.92 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.597e-05/0.7848, allocations: 31.91 kB / 1.165 GB, free: 8.961 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001976/0.7868, allocations: 1.15 MB / 1.166 GB, free: 7.785 MB / 0.92 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.755e-06/0.7868, allocations: 11.97 kB / 1.166 GB, free: 7.773 MB / 0.92 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004424/0.7912, allocations: 1.438 MB / 1.168 GB, free: 6.258 MB / 0.92 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005425/0.7918, allocations: 355.1 kB / 1.168 GB, free: 5.891 MB / 0.92 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002376/0.792, allocations: 24.12 kB / 1.168 GB, free: 5.867 MB / 0.92 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001729/0.7937, allocations: 115.8 kB / 1.168 GB, free: 5.754 MB / 0.92 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000114/0.7939, allocations: 64.33 kB / 1.168 GB, free: 5.691 MB / 0.92 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.194e-05/0.794, allocations: 51.94 kB / 1.168 GB, free: 5.641 MB / 0.92 GB Notification: Performance of sorting global known variables: time 0.001491/0.7955, allocations: 0.9693 MB / 1.169 GB, free: 4.672 MB / 0.92 GB Notification: Performance of sort global known variables: time 1.5e-07/0.7955, allocations: 0 / 1.169 GB, free: 4.672 MB / 0.92 GB Notification: Performance of remove unused functions: time 0.002277/0.7978, allocations: 0.9007 MB / 1.17 GB, free: 3.77 MB / 0.92 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 17 * Number of states: 0 () * Number of discrete variables: 1 (heaPum.com.isOn) * Number of discrete states: 1 (heaPum.com.isOn) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (42): * Single equations (assignments): 39 * 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 {(4,25)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0057/0.8035, allocations: 2.442 MB / 1.173 GB, free: 1.262 MB / 0.92 GB Notification: Performance of simCode: created initialization part: time 0.006782/0.8103, allocations: 1.882 MB / 1.174 GB, free: 15.38 MB / 0.9356 GB Notification: Performance of simCode: created event and clocks part: time 4.288e-06/0.8103, allocations: 0 / 1.174 GB, free: 15.38 MB / 0.9356 GB Notification: Performance of simCode: created simulation system equations: time 0.001974/0.8123, allocations: 0.5418 MB / 1.175 GB, free: 14.84 MB / 0.9356 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003552/0.8158, allocations: 0.8269 MB / 1.176 GB, free: 14.04 MB / 0.9356 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02518/0.841, allocations: 12.82 MB / 1.188 GB, free: 0.5938 MB / 0.9356 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007267/0.8418, allocations: 1.211 MB / 1.189 GB, free: 15.36 MB / 0.9512 GB Notification: Performance of simCode: alias equations: time 0.001497/0.8433, allocations: 335.7 kB / 1.19 GB, free: 15.03 MB / 0.9512 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007111/0.844, allocations: 0.5617 MB / 1.19 GB, free: 14.46 MB / 0.9512 GB Notification: Performance of SimCode: time 1.472e-06/0.844, allocations: 0 / 1.19 GB, free: 14.46 MB / 0.9512 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.8607/1.705, allocations: 52.16 MB / 1.241 GB, free: 10.91 MB / 0.9981 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.39/15.09, allocations: 11.98 kB / 1.241 GB, free: 10.9 MB / 0.9981 GB (rm -f Buildings_10_Buildings.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static.pipe ; mkfifo Buildings_10_Buildings.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static.pipe ; head -c 1048576 < Buildings_10_Buildings.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static.pipe >> ../files/Buildings_10_Buildings.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_10_Buildings.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static_res.mat --tempDir=temp_Buildings_10_Buildings_Fluid_HeatPumps_Validation_ScrollWaterToWater_Static_fmu --startTime=0 --stopTime=1000 --timeout=50 --tolerance=1e-06 Buildings_10_Buildings_Fluid_HeatPumps_Validation_ScrollWaterToWater_Static.fmu > Buildings_10_Buildings.Fluid.HeatPumps.Validation.ScrollWaterToWater_Static.pipe 2>&1)