Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization.conf.json loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 7.0.1/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) Using package ModelicaServices with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Using package Modelica with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package Buildings with version 7.0.1 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 7.0.1/package.mo) Running command: translateModel(Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization") translateModel(Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization") Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 7.0.1/package.mo): time 2.299/2.299, allocations: 255 MB / 269.9 MB, free: 9.633 MB / 218.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001406/0.001405, allocations: 197.2 kB / 329.5 MB, free: 1.172 MB / 250.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 2.725/2.725, allocations: 225.6 MB / 0.6001 GB, free: 0.5352 MB / 426.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009449/0.0009446, allocations: 99.86 kB / 0.7074 GB, free: 6.27 MB / 0.5261 GB Notification: Performance of FrontEnd - loaded program: time 0.0004933/0.0004935, allocations: 18.55 kB / 0.8242 GB, free: 124.8 MB / 0.5886 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2388/0.2393, allocations: 109.1 MB / 0.9308 GB, free: 24.89 MB / 0.5886 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization): time 0.03859/0.2779, allocations: 28.51 MB / 0.9586 GB, free: 12.3 MB / 0.6042 GB Notification: Performance of NFInst.instExpressions: time 0.02993/0.3079, allocations: 13.16 MB / 0.9715 GB, free: 15.12 MB / 0.6198 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001722/0.3097, allocations: 27.75 kB / 0.9715 GB, free: 15.09 MB / 0.6198 GB Notification: Performance of NFTyping.typeComponents: time 0.00163/0.3113, allocations: 274.1 kB / 0.9717 GB, free: 14.82 MB / 0.6198 GB Notification: Performance of NFTyping.typeBindings: time 0.004434/0.3158, allocations: 0.9286 MB / 0.9727 GB, free: 13.89 MB / 0.6198 GB Notification: Performance of NFTyping.typeClassSections: time 0.003482/0.3193, allocations: 0.6978 MB / 0.9733 GB, free: 13.19 MB / 0.6198 GB Notification: Performance of NFFlatten.flatten: time 0.004928/0.3243, allocations: 2.42 MB / 0.9757 GB, free: 10.76 MB / 0.6198 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001563/0.3259, allocations: 0.5382 MB / 0.9762 GB, free: 10.2 MB / 0.6198 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003028/0.329, allocations: 0.8166 MB / 0.977 GB, free: 9.383 MB / 0.6198 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001884/0.3309, allocations: 0.6224 MB / 0.9776 GB, free: 8.758 MB / 0.6198 GB Notification: Performance of NFPackage.collectConstants: time 0.0002582/0.3312, allocations: 32 kB / 0.9777 GB, free: 8.727 MB / 0.6198 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002083/0.3333, allocations: 0.5068 MB / 0.9782 GB, free: 8.219 MB / 0.6198 GB Notification: Performance of NFScalarize.scalarize: time 0.0003178/0.3337, allocations: 131.3 kB / 0.9783 GB, free: 8.09 MB / 0.6198 GB Notification: Performance of NFVerifyModel.verify: time 0.0004816/0.3342, allocations: 177.3 kB / 0.9784 GB, free: 7.91 MB / 0.6198 GB Notification: Performance of NFConvertDAE.convert: time 0.001953/0.3361, allocations: 0.7598 MB / 0.9792 GB, free: 7.148 MB / 0.6198 GB Notification: Performance of FrontEnd - DAE generated: time 7.143e-06/0.3362, allocations: 0 / 0.9792 GB, free: 7.148 MB / 0.6198 GB Notification: Performance of FrontEnd: time 3.276e-06/0.3362, allocations: 0 / 0.9792 GB, free: 7.148 MB / 0.6198 GB Notification: Performance of Transformations before backend: time 2.149e-05/0.3362, allocations: 0 / 0.9792 GB, free: 7.148 MB / 0.6198 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 117 * Number of variables: 117 Notification: Performance of Generate backend data structure: time 0.002742/0.339, allocations: 1.012 MB / 0.9802 GB, free: 6.086 MB / 0.6198 GB Notification: Performance of prepare preOptimizeDAE: time 4.623e-05/0.339, allocations: 8.031 kB / 0.9802 GB, free: 6.078 MB / 0.6198 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002599/0.3393, allocations: 95.81 kB / 0.9803 GB, free: 5.984 MB / 0.6198 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001434/0.3407, allocations: 0.5347 MB / 0.9808 GB, free: 5.41 MB / 0.6198 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.21e-05/0.3408, allocations: 41 kB / 0.9808 GB, free: 5.367 MB / 0.6198 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001221/0.341, allocations: 56 kB / 0.9809 GB, free: 5.312 MB / 0.6198 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001263/0.3422, allocations: 414.4 kB / 0.9813 GB, free: 4.898 MB / 0.6198 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.07e-05/0.3423, allocations: 3.938 kB / 0.9813 GB, free: 4.895 MB / 0.6198 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.535e-05/0.3424, allocations: 20 kB / 0.9813 GB, free: 4.875 MB / 0.6198 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.251e-05/0.3424, allocations: 16 kB / 0.9813 GB, free: 4.859 MB / 0.6198 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001088/0.3435, allocations: 315.7 kB / 0.9816 GB, free: 4.555 MB / 0.6198 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 0.004974/0.3485, allocations: 1.854 MB / 0.9834 GB, free: 2.547 MB / 0.6198 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005974/0.3491, allocations: 166.5 kB / 0.9836 GB, free: 2.375 MB / 0.6198 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003187/0.3495, allocations: 92.73 kB / 0.9837 GB, free: 2.281 MB / 0.6198 GB Notification: Performance of preOpt evalFunc (simulation): time 0.000418/0.3499, allocations: 344.4 kB / 0.984 GB, free: 1.871 MB / 0.6198 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.781e-05/0.35, allocations: 34.52 kB / 0.984 GB, free: 1.828 MB / 0.6198 GB Notification: Performance of pre-optimization done (n=19): time 2.855e-06/0.35, allocations: 0 / 0.984 GB, free: 1.828 MB / 0.6198 GB Notification: Performance of matching and sorting (n=19): time 0.001288/0.3513, allocations: 312.7 kB / 0.9843 GB, free: 1.516 MB / 0.6198 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.342e-05/0.3514, allocations: 55.36 kB / 0.9844 GB, free: 1.449 MB / 0.6198 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001323/0.3527, allocations: 0.6569 MB / 0.985 GB, free: 0.7812 MB / 0.6198 GB Notification: Performance of collectPreVariables (initialization): time 9.673e-05/0.3528, allocations: 41.69 kB / 0.9851 GB, free: 0.7344 MB / 0.6198 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004437/0.3533, allocations: 368 kB / 0.9854 GB, free: 380 kB / 0.6198 GB Notification: Performance of collectInitialBindings (initialization): time 8.519e-05/0.3534, allocations: 63.11 kB / 0.9855 GB, free: 316 kB / 0.6198 GB Notification: Performance of simplifyInitialFunctions (initialization): time 2.686e-05/0.3534, allocations: 4 kB / 0.9855 GB, free: 312 kB / 0.6198 GB Notification: Performance of setup shared object (initialization): time 0.0002585/0.3537, allocations: 386.7 kB / 0.9859 GB, free: 15.92 MB / 0.6355 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000443/0.3541, allocations: 103.9 kB / 0.986 GB, free: 15.82 MB / 0.6355 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005281/0.3547, allocations: 174.3 kB / 0.9861 GB, free: 15.62 MB / 0.6355 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.000484/0.3552, allocations: 122.8 kB / 0.9862 GB, free: 15.5 MB / 0.6355 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.204e-06/0.3552, allocations: 4 kB / 0.9862 GB, free: 15.5 MB / 0.6355 GB Notification: Performance of matching and sorting (n=45) (initialization): time 0.00135/0.3566, allocations: 386.6 kB / 0.9866 GB, free: 15.12 MB / 0.6355 GB Notification: Performance of prepare postOptimizeDAE: time 9.91e-05/0.3567, allocations: 106.7 kB / 0.9867 GB, free: 15 MB / 0.6355 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.417e-06/0.3567, allocations: 0 / 0.9867 GB, free: 15 MB / 0.6355 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.616e-05/0.3567, allocations: 8 kB / 0.9867 GB, free: 14.99 MB / 0.6355 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001943/0.3587, allocations: 167.8 kB / 0.9869 GB, free: 14.83 MB / 0.6355 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001917/0.3607, allocations: 2.375 MB / 0.9892 GB, free: 12.36 MB / 0.6355 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001136/0.3618, allocations: 83.58 kB / 0.9893 GB, free: 12.28 MB / 0.6355 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.34e-05/0.3619, allocations: 12.09 kB / 0.9893 GB, free: 12.27 MB / 0.6355 GB Notification: Performance of prepare postOptimizeDAE: time 1.522e-05/0.362, allocations: 11.84 kB / 0.9893 GB, free: 12.25 MB / 0.6355 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001029/0.363, allocations: 292 kB / 0.9896 GB, free: 11.97 MB / 0.6355 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.49e-06/0.363, allocations: 0 / 0.9896 GB, free: 11.97 MB / 0.6355 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.302e-05/0.3631, allocations: 8 kB / 0.9896 GB, free: 11.96 MB / 0.6355 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008768/0.364, allocations: 103.8 kB / 0.9897 GB, free: 11.86 MB / 0.6355 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.322e-05/0.364, allocations: 11.88 kB / 0.9897 GB, free: 11.85 MB / 0.6355 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001004/0.365, allocations: 79.62 kB / 0.9898 GB, free: 11.77 MB / 0.6355 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.257e-05/0.3651, allocations: 11.98 kB / 0.9898 GB, free: 11.76 MB / 0.6355 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 3 * 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 (45): * Single equations (assignments): 41 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 4 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 4 {1,1,1,1} * Without analytic Jacobian: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0004738/0.3656, allocations: 261.6 kB / 0.99 GB, free: 11.49 MB / 0.6355 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001862/0.3658, allocations: 71.16 kB / 0.9901 GB, free: 11.42 MB / 0.6355 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001139/0.3669, allocations: 319.6 kB / 0.9904 GB, free: 11.1 MB / 0.6355 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.154e-05/0.3669, allocations: 0 / 0.9904 GB, free: 11.1 MB / 0.6355 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.432e-06/0.367, allocations: 0 / 0.9904 GB, free: 11.1 MB / 0.6355 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.036e-06/0.367, allocations: 4 kB / 0.9904 GB, free: 11.09 MB / 0.6355 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002255/0.3692, allocations: 0.8981 MB / 0.9913 GB, free: 10.13 MB / 0.6355 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.03e-05/0.3693, allocations: 4 kB / 0.9913 GB, free: 10.12 MB / 0.6355 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006306/0.3699, allocations: 67.94 kB / 0.9914 GB, free: 10.06 MB / 0.6355 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.062e-05/0.37, allocations: 4 kB / 0.9914 GB, free: 10.05 MB / 0.6355 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.506e-05/0.37, allocations: 4 kB / 0.9914 GB, free: 10.05 MB / 0.6355 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001589/0.3716, allocations: 2.36 MB / 0.9937 GB, free: 7.598 MB / 0.6355 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.023e-06/0.3717, allocations: 4.031 kB / 0.9937 GB, free: 7.594 MB / 0.6355 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001005/0.3727, allocations: 408 kB / 0.9941 GB, free: 7.168 MB / 0.6355 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003756/0.3731, allocations: 168.2 kB / 0.9942 GB, free: 6.984 MB / 0.6355 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000128/0.3732, allocations: 11.98 kB / 0.9942 GB, free: 6.973 MB / 0.6355 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007215/0.374, allocations: 55.88 kB / 0.9943 GB, free: 6.918 MB / 0.6355 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.275e-05/0.374, allocations: 15.98 kB / 0.9943 GB, free: 6.902 MB / 0.6355 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.567e-05/0.3741, allocations: 11.98 kB / 0.9943 GB, free: 6.891 MB / 0.6355 GB Notification: Performance of sorting global known variables: time 0.0008682/0.375, allocations: 459 kB / 0.9948 GB, free: 6.445 MB / 0.6355 GB Notification: Performance of sort global known variables: time 3.7e-07/0.375, allocations: 0 / 0.9948 GB, free: 6.445 MB / 0.6355 GB Notification: Performance of remove unused functions: time 0.001409/0.3764, allocations: 351 kB / 0.9951 GB, free: 6.102 MB / 0.6355 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 (21): * Single equations (assignments): 15 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 4 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 4 {1,1,1,1} * Without analytic Jacobian: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.000729/0.3772, allocations: 258 kB / 0.9953 GB, free: 5.848 MB / 0.6355 GB Notification: Performance of simCode: created initialization part: time 0.002912/0.3801, allocations: 0.4922 MB / 0.9958 GB, free: 5.355 MB / 0.6355 GB Notification: Performance of simCode: created event and clocks part: time 7.454e-06/0.3802, allocations: 0 / 0.9958 GB, free: 5.355 MB / 0.6355 GB Notification: Performance of simCode: created simulation system equations: time 0.001178/0.3814, allocations: 143.8 kB / 0.996 GB, free: 5.215 MB / 0.6355 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.006203/0.3876, allocations: 379.6 kB / 0.9963 GB, free: 4.848 MB / 0.6355 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004869/0.3925, allocations: 1.324 MB / 0.9976 GB, free: 3.492 MB / 0.6355 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001047/0.3936, allocations: 0.9332 MB / 0.9985 GB, free: 2.531 MB / 0.6355 GB Notification: Performance of simCode: alias equations: time 0.001317/0.395, allocations: 121.3 kB / 0.9986 GB, free: 2.41 MB / 0.6355 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002481/0.3953, allocations: 47.44 kB / 0.9987 GB, free: 2.367 MB / 0.6355 GB Notification: Performance of SimCode: time 1.623e-06/0.3953, allocations: 0 / 0.9987 GB, free: 2.367 MB / 0.6355 GB Notification: Performance of Templates: time 0.05766/0.453, allocations: 12.06 MB / 1.01 GB, free: 6.461 MB / 0.6511 GB make -j1 -f Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization.makefile (rm -f Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization.pipe ; mkfifo Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization.pipe ; head -c 1048576 < Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization.pipe >> ../files/Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization.sim & ./Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_7.0.0_Buildings.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization.pipe 2>&1)