Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves.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: "" <> buildModelFMU(IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves,fileNamePrefix="IDEAS_IDEAS_Fluid_Actuators_Valves_Examples_TwoWayValves",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves,fileNamePrefix="IDEAS_IDEAS_Fluid_Actuators_Valves_Examples_TwoWayValves",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 0.001897/0.001897, allocations: 112.5 kB / 15.74 MB, free: 68 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001471/0.001471, allocations: 195.2 kB / 16.67 MB, free: 6.582 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.356/1.356, allocations: 222.9 MB / 240.4 MB, free: 4.305 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7909/0.7909, allocations: 132.2 MB / 422.7 MB, free: 1.684 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001736/0.001736, allocations: 71.34 kB / 0.5809 GB, free: 1.105 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1667/0.1684, allocations: 80.21 MB / 0.6592 GB, free: 13.97 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves): time 0.03087/0.1993, allocations: 29.82 MB / 0.6883 GB, free: 40 kB / 0.5137 GB Notification: Performance of NFInst.instExpressions: time 0.01241/0.2118, allocations: 8.152 MB / 0.6963 GB, free: 7.863 MB / 0.5294 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001274/0.2131, allocations: 27.81 kB / 0.6963 GB, free: 7.836 MB / 0.5294 GB Notification: Performance of NFTyping.typeComponents: time 0.00121/0.2144, allocations: 432.9 kB / 0.6967 GB, free: 7.41 MB / 0.5294 GB Notification: Performance of NFTyping.typeBindings: time 0.003561/0.2179, allocations: 1.375 MB / 0.6981 GB, free: 6.031 MB / 0.5294 GB Notification: Performance of NFTyping.typeClassSections: time 0.002849/0.2208, allocations: 1.141 MB / 0.6992 GB, free: 4.902 MB / 0.5294 GB Notification: Performance of NFFlatten.flatten: time 0.00417/0.225, allocations: 3.544 MB / 0.7026 GB, free: 1.344 MB / 0.5294 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001675/0.2267, allocations: 1.33 MB / 0.7039 GB, free: 15.99 MB / 0.545 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00244/0.2291, allocations: 1.679 MB / 0.7056 GB, free: 14.31 MB / 0.545 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002583/0.2317, allocations: 1.62 MB / 0.7072 GB, free: 12.69 MB / 0.545 GB Notification: Performance of NFPackage.collectConstants: time 0.0003543/0.2321, allocations: 127.9 kB / 0.7073 GB, free: 12.56 MB / 0.545 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002026/0.2341, allocations: 1.018 MB / 0.7083 GB, free: 11.54 MB / 0.545 GB Notification: Performance of NFScalarize.scalarize: time 0.0004792/0.2346, allocations: 406.7 kB / 0.7087 GB, free: 11.14 MB / 0.545 GB Notification: Performance of NFVerifyModel.verify: time 0.0008878/0.2355, allocations: 0.7544 MB / 0.7094 GB, free: 10.39 MB / 0.545 GB Notification: Performance of NFConvertDAE.convert: time 0.002724/0.2382, allocations: 2.211 MB / 0.7116 GB, free: 8.168 MB / 0.545 GB Notification: Performance of FrontEnd - DAE generated: time 5.129e-06/0.2382, allocations: 0 / 0.7116 GB, free: 8.168 MB / 0.545 GB Notification: Performance of FrontEnd: time 5.41e-06/0.2383, allocations: 0 / 0.7116 GB, free: 8.168 MB / 0.545 GB Notification: Performance of Transformations before backend: time 2.212e-05/0.2383, allocations: 3.938 kB / 0.7116 GB, free: 8.164 MB / 0.545 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 145 * Number of variables: 145 Notification: Performance of Generate backend data structure: time 0.002684/0.241, allocations: 1.708 MB / 0.7132 GB, free: 6.402 MB / 0.545 GB Notification: Performance of prepare preOptimizeDAE: time 4.164e-05/0.241, allocations: 12.03 kB / 0.7132 GB, free: 6.391 MB / 0.545 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001115/0.2411, allocations: 98.69 kB / 0.7133 GB, free: 6.285 MB / 0.545 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0003369/0.2415, allocations: 159.1 kB / 0.7135 GB, free: 6.129 MB / 0.545 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001664/0.2432, allocations: 0.9385 MB / 0.7144 GB, free: 5.133 MB / 0.545 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.208e-05/0.2432, allocations: 77.31 kB / 0.7145 GB, free: 5.059 MB / 0.545 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001921/0.2434, allocations: 116 kB / 0.7146 GB, free: 4.945 MB / 0.545 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00105/0.2445, allocations: 0.6356 MB / 0.7152 GB, free: 4.281 MB / 0.545 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.046e-05/0.2445, allocations: 7.984 kB / 0.7152 GB, free: 4.273 MB / 0.545 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.208e-05/0.2446, allocations: 27.94 kB / 0.7152 GB, free: 4.246 MB / 0.545 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.709e-05/0.2446, allocations: 16 kB / 0.7153 GB, free: 4.23 MB / 0.545 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008957/0.2455, allocations: 464.8 kB / 0.7157 GB, free: 3.777 MB / 0.545 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 0.004261/0.2498, allocations: 2.868 MB / 0.7185 GB, free: 0.7578 MB / 0.545 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0006014/0.2504, allocations: 303.3 kB / 0.7188 GB, free: 464 kB / 0.545 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000299/0.2507, allocations: 145.3 kB / 0.7189 GB, free: 316 kB / 0.545 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003434/0.251, allocations: 344.7 kB / 0.7193 GB, free: 15.9 MB / 0.5606 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.016e-05/0.2511, allocations: 38.84 kB / 0.7193 GB, free: 15.85 MB / 0.5606 GB Notification: Performance of pre-optimization done (n=33): time 1.774e-06/0.2511, allocations: 3.938 kB / 0.7193 GB, free: 15.85 MB / 0.5606 GB Notification: Performance of matching and sorting (n=33): time 0.001266/0.2524, allocations: 0.5338 MB / 0.7198 GB, free: 15.31 MB / 0.5606 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.13e-05/0.2524, allocations: 55.41 kB / 0.7199 GB, free: 15.24 MB / 0.5606 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00102/0.2534, allocations: 0.9077 MB / 0.7208 GB, free: 14.32 MB / 0.5606 GB Notification: Performance of collectPreVariables (initialization): time 0.0001084/0.2536, allocations: 57.7 kB / 0.7208 GB, free: 14.25 MB / 0.5606 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004418/0.254, allocations: 495.3 kB / 0.7213 GB, free: 13.77 MB / 0.5606 GB Notification: Performance of collectInitialBindings (initialization): time 9.232e-05/0.2541, allocations: 118.9 kB / 0.7214 GB, free: 13.65 MB / 0.5606 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004174/0.2545, allocations: 299 kB / 0.7217 GB, free: 13.35 MB / 0.5606 GB Notification: Performance of setup shared object (initialization): time 0.0001375/0.2547, allocations: 329.9 kB / 0.722 GB, free: 13.02 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004052/0.2551, allocations: 189.4 kB / 0.7222 GB, free: 12.83 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001439/0.2565, allocations: 1.155 MB / 0.7233 GB, free: 11.32 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008356/0.2574, allocations: 459.4 kB / 0.7238 GB, free: 10.85 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.986e-06/0.2574, allocations: 0 / 0.7238 GB, free: 10.85 MB / 0.5606 GB Notification: Performance of matching and sorting (n=73) (initialization): time 0.001278/0.2587, allocations: 0.6584 MB / 0.7244 GB, free: 10.18 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 2.543e-05/0.2587, allocations: 7.984 kB / 0.7244 GB, free: 10.18 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.042e-05/0.2587, allocations: 4 kB / 0.7244 GB, free: 10.17 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.944e-05/0.2588, allocations: 4 kB / 0.7244 GB, free: 10.17 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001342/0.2601, allocations: 231.9 kB / 0.7246 GB, free: 9.941 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001742/0.2618, allocations: 2.953 MB / 0.7275 GB, free: 6.871 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002991/0.2649, allocations: 0.6992 MB / 0.7282 GB, free: 6.172 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.227e-05/0.2649, allocations: 27.98 kB / 0.7282 GB, free: 6.145 MB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0006605/0.2656, allocations: 374.1 kB / 0.7286 GB, free: 5.773 MB / 0.5606 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001385/0.267, allocations: 1.162 MB / 0.7297 GB, free: 4.238 MB / 0.5606 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007844/0.2678, allocations: 456.7 kB / 0.7302 GB, free: 3.746 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.084e-06/0.2678, allocations: 0 / 0.7302 GB, free: 3.746 MB / 0.5606 GB Notification: Performance of matching and sorting (n=73) (initialization_lambda0): time 0.001324/0.2691, allocations: 0.6633 MB / 0.7308 GB, free: 3.074 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 1.125e-05/0.2691, allocations: 4 kB / 0.7308 GB, free: 3.07 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.03e-06/0.2692, allocations: 4 kB / 0.7308 GB, free: 3.066 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 8.436e-06/0.2692, allocations: 4 kB / 0.7308 GB, free: 3.062 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006259/0.2698, allocations: 155.8 kB / 0.731 GB, free: 2.91 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.648e-05/0.2698, allocations: 15.92 kB / 0.731 GB, free: 2.895 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004035/0.2739, allocations: 0.9693 MB / 0.7319 GB, free: 1.926 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.034e-05/0.2739, allocations: 23.98 kB / 0.7319 GB, free: 1.902 MB / 0.5606 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 9 * 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 (73): * Single equations (assignments): 68 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 5 * Torn equation systems: 0 * 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): 5 systems {1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0002553/0.2742, allocations: 245 kB / 0.7322 GB, free: 1.656 MB / 0.5606 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000144/0.2743, allocations: 99.53 kB / 0.7323 GB, free: 1.559 MB / 0.5606 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001093/0.2754, allocations: 0.5242 MB / 0.7328 GB, free: 1.02 MB / 0.5606 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.083e-05/0.2755, allocations: 4 kB / 0.7328 GB, free: 1.016 MB / 0.5606 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.899e-06/0.2755, allocations: 0 / 0.7328 GB, free: 1.016 MB / 0.5606 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.911e-06/0.2755, allocations: 0 / 0.7328 GB, free: 1.016 MB / 0.5606 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001911/0.2774, allocations: 1.253 MB / 0.734 GB, free: 15.7 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.348e-06/0.2774, allocations: 0 / 0.734 GB, free: 15.7 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004909/0.2779, allocations: 119.8 kB / 0.7341 GB, free: 15.58 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 7.945e-06/0.2779, allocations: 11.88 kB / 0.7341 GB, free: 15.57 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.509e-05/0.278, allocations: 8 kB / 0.7341 GB, free: 15.56 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001556/0.2795, allocations: 2.946 MB / 0.737 GB, free: 12.5 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.923e-06/0.2795, allocations: 0 / 0.737 GB, free: 12.5 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0009007/0.2804, allocations: 0.5764 MB / 0.7376 GB, free: 11.89 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002609/0.2807, allocations: 212.3 kB / 0.7378 GB, free: 11.67 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001005/0.2808, allocations: 11.94 kB / 0.7378 GB, free: 11.66 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000424/0.2812, allocations: 31.95 kB / 0.7378 GB, free: 11.62 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.572e-05/0.2813, allocations: 27.97 kB / 0.7379 GB, free: 11.6 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.814e-05/0.2814, allocations: 16 kB / 0.7379 GB, free: 11.58 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.0007252/0.2821, allocations: 0.6123 MB / 0.7385 GB, free: 10.96 MB / 0.5762 GB Notification: Performance of sort global known variables: time 1.21e-07/0.2821, allocations: 0 / 0.7385 GB, free: 10.96 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.00131/0.2834, allocations: 0.5458 MB / 0.739 GB, free: 10.41 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * 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 (39): * Single equations (assignments): 32 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 5 * Torn equation systems: 0 * 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): 5 systems {1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001785/0.2852, allocations: 1.342 MB / 0.7403 GB, free: 9.047 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.002377/0.2876, allocations: 0.8387 MB / 0.7411 GB, free: 8.215 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 2.475e-06/0.2876, allocations: 0 / 0.7411 GB, free: 8.215 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.0005742/0.2882, allocations: 227.6 kB / 0.7413 GB, free: 7.992 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001686/0.2899, allocations: 407.5 kB / 0.7417 GB, free: 7.609 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009197/0.2991, allocations: 6.572 MB / 0.7482 GB, free: 0.8359 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006251/0.2997, allocations: 1.025 MB / 0.7492 GB, free: 15.78 MB / 0.5919 GB Notification: Performance of simCode: alias equations: time 0.0007629/0.3005, allocations: 210.7 kB / 0.7494 GB, free: 15.57 MB / 0.5919 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004583/0.301, allocations: 363.3 kB / 0.7497 GB, free: 15.21 MB / 0.5919 GB Notification: Performance of SimCode: time 5.61e-07/0.301, allocations: 0 / 0.7497 GB, free: 15.21 MB / 0.5919 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.06492/0.3659, allocations: 33.51 MB / 0.7824 GB, free: 14.27 MB / 0.6231 GB Notification: Performance of buildModelFMU: Generate platform static: time 20.82/21.19, allocations: 7.125 kB / 0.7824 GB, free: 14.27 MB / 0.6231 GB (rm -f IDEAS_IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves.pipe ; mkfifo IDEAS_IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves.pipe >> ../files/IDEAS_IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves.sim & python3 -m fmpy simulate --output-file IDEAS_IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves_res.csv --start-time 0 --stop-time 1 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 IDEAS_IDEAS_Fluid_Actuators_Valves_Examples_TwoWayValves.fmu > IDEAS_IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValves.pipe 2>&1)