Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.2+maint.om/package.mo", uses=false) Using package ModelicaTest with version 3.2.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.2+maint.om/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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(ModelicaTest.Blocks.Continuous_InitialState,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState") translateModel(ModelicaTest.Blocks.Continuous_InitialState,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.009343/0.009344, allocations: 99.31 kB / 15.73 MB, free: 6.051 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001637/0.001637, allocations: 188.9 kB / 16.67 MB, free: 5.977 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.631/1.631, allocations: 205.1 MB / 222.5 MB, free: 4.512 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.2+maint.om/package.mo): time 0.4354/0.4354, allocations: 39.95 MB / 309.8 MB, free: 9.398 MB / 254.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: ModelicaTest requested package Modelica of version 3.2.2. Modelica 3.2.3 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.00132/0.00132, allocations: 64.47 kB / 435.8 MB, free: 2.473 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3923/0.3936, allocations: 56.88 MB / 492.7 MB, free: 19.46 MB / 382.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Blocks.Continuous_InitialState): time 0.005512/0.3992, allocations: 3.377 MB / 496 MB, free: 17.05 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.004027/0.4032, allocations: 1.579 MB / 497.6 MB, free: 15.95 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006013/0.4039, allocations: 24.03 kB / 497.6 MB, free: 15.95 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0004913/0.4044, allocations: 148.8 kB / 497.8 MB, free: 15.85 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0005437/0.405, allocations: 196.5 kB / 498 MB, free: 15.72 MB / 382.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Math/package.mo:1555:3-1615:27:writable] Warning: Pure function 'Modelica.Math.Matrices.equalityLeastSquares' contains a call to impure function 'Modelica.Math.Matrices.LAPACK.dgglse_vec'. Notification: Performance of NFTyping.typeClassSections: time 0.001457/0.4064, allocations: 0.5152 MB / 498.5 MB, free: 15.46 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.001202/0.4076, allocations: 0.9233 MB / 499.4 MB, free: 15.03 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0004291/0.4081, allocations: 243 kB / 499.7 MB, free: 14.89 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0005541/0.4086, allocations: 368.6 kB / 0.4883 GB, free: 14.72 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0005641/0.4092, allocations: 391.5 kB / 0.4887 GB, free: 14.54 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001277/0.4093, allocations: 62.75 kB / 0.4887 GB, free: 14.54 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0001279/0.4095, allocations: 64.97 kB / 0.4888 GB, free: 14.54 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002338/0.4097, allocations: 204.8 kB / 0.489 GB, free: 14.42 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0003014/0.41, allocations: 347.9 kB / 0.4893 GB, free: 14.18 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.001106/0.4111, allocations: 0.7898 MB / 0.4901 GB, free: 13.81 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.549e-06/0.4112, allocations: 0 / 0.4901 GB, free: 13.81 MB / 382.1 MB Notification: Performance of FrontEnd: time 1.783e-06/0.4112, allocations: 1.469 kB / 0.4901 GB, free: 13.81 MB / 382.1 MB Notification: Performance of Transformations before backend: time 1.128e-05/0.4112, allocations: 0.6562 kB / 0.4901 GB, free: 13.81 MB / 382.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 110 * Number of variables: 110 Notification: Performance of Generate backend data structure: time 0.002413/0.4136, allocations: 1.16 MB / 0.4912 GB, free: 13.04 MB / 382.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.395e-05/0.4136, allocations: 14.94 kB / 0.4912 GB, free: 13.03 MB / 382.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001537/0.4138, allocations: 87.66 kB / 0.4913 GB, free: 12.99 MB / 382.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001046/0.4149, allocations: 0.5928 MB / 0.4919 GB, free: 12.59 MB / 382.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.059e-05/0.4149, allocations: 37.16 kB / 0.4919 GB, free: 12.57 MB / 382.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001021/0.415, allocations: 63.64 kB / 0.492 GB, free: 12.54 MB / 382.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001202/0.4162, allocations: 0.5997 MB / 0.4926 GB, free: 12.23 MB / 382.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.136e-05/0.4163, allocations: 10.69 kB / 0.4926 GB, free: 12.22 MB / 382.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.707e-05/0.4163, allocations: 20.12 kB / 0.4926 GB, free: 12.21 MB / 382.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.628e-05/0.4163, allocations: 12.38 kB / 0.4926 GB, free: 12.21 MB / 382.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001201/0.4175, allocations: 460.5 kB / 0.4931 GB, free: 12.07 MB / 382.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.00351/0.4211, allocations: 2.664 MB / 0.4957 GB, free: 9.938 MB / 382.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.00106/0.4221, allocations: 0.5346 MB / 0.4962 GB, free: 9.645 MB / 382.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005294/0.4227, allocations: 254.7 kB / 0.4964 GB, free: 9.512 MB / 382.1 MB Notification: Performance of preOpt evalFunc (simulation): time 4.062e-05/0.4227, allocations: 16.5 kB / 0.4964 GB, free: 9.5 MB / 382.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.401e-05/0.4228, allocations: 36.84 kB / 0.4965 GB, free: 9.457 MB / 382.1 MB Notification: Performance of pre-optimization done (n=43): time 1.953e-06/0.4228, allocations: 1.156 kB / 0.4965 GB, free: 9.457 MB / 382.1 MB Notification: Performance of matching and sorting (n=44): time 0.00239/0.4252, allocations: 1.13 MB / 0.4976 GB, free: 8.82 MB / 382.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 5.2e-05/0.4252, allocations: 133.7 kB / 0.4977 GB, free: 8.664 MB / 382.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009061/0.4261, allocations: 0.6642 MB / 0.4984 GB, free: 8.281 MB / 382.1 MB Notification: Performance of collectPreVariables (initialization): time 4.105e-05/0.4262, allocations: 36.2 kB / 0.4984 GB, free: 8.242 MB / 382.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002356/0.4264, allocations: 357.4 kB / 0.4987 GB, free: 7.926 MB / 382.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001285/0.4266, allocations: 177.9 kB / 0.4989 GB, free: 7.77 MB / 382.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001829/0.4268, allocations: 114.3 kB / 0.499 GB, free: 7.699 MB / 382.1 MB Notification: Performance of setup shared object (initialization): time 7.67e-05/0.4268, allocations: 328 kB / 0.4993 GB, free: 7.379 MB / 382.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006101/0.4275, allocations: 270.9 kB / 0.4996 GB, free: 7.254 MB / 382.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006996/0.4282, allocations: 428 kB / 0.5 GB, free: 6.934 MB / 382.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001301/0.4295, allocations: 0.6828 MB / 0.5007 GB, free: 6.488 MB / 382.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.467e-06/0.4295, allocations: 1.125 kB / 0.5007 GB, free: 6.488 MB / 382.1 MB Notification: Performance of matching and sorting (n=77) (initialization): time 0.001622/0.4311, allocations: 0.7948 MB / 0.5014 GB, free: 6.102 MB / 382.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.879e-05/0.4312, allocations: 7.156 kB / 0.5014 GB, free: 6.102 MB / 382.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.065e-06/0.4312, allocations: 5.406 kB / 0.5015 GB, free: 6.102 MB / 382.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.977e-05/0.4312, allocations: 11.41 kB / 0.5015 GB, free: 6.098 MB / 382.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006499/0.4318, allocations: 151.3 kB / 0.5016 GB, free: 6.059 MB / 382.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.318e-05/0.4319, allocations: 11.91 kB / 0.5016 GB, free: 6.055 MB / 382.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005029/0.4324, allocations: 77.31 kB / 0.5017 GB, free: 6.012 MB / 382.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.802e-05/0.4324, allocations: 22.84 kB / 0.5017 GB, free: 6.008 MB / 382.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0007417/0.4332, allocations: 413.1 kB / 0.5021 GB, free: 5.77 MB / 382.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0006285/0.4338, allocations: 416.9 kB / 0.5025 GB, free: 5.453 MB / 382.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001162/0.435, allocations: 0.6651 MB / 0.5032 GB, free: 5.012 MB / 382.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.407e-06/0.435, allocations: 1.344 kB / 0.5032 GB, free: 5.012 MB / 382.1 MB Notification: Performance of matching and sorting (n=77) (initialization_lambda0): time 0.001522/0.4365, allocations: 0.7675 MB / 0.5039 GB, free: 4.637 MB / 382.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.482e-05/0.4366, allocations: 7.906 kB / 0.5039 GB, free: 4.637 MB / 382.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.777e-06/0.4366, allocations: 8.453 kB / 0.5039 GB, free: 4.633 MB / 382.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.456e-05/0.4366, allocations: 11.38 kB / 0.5039 GB, free: 4.629 MB / 382.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006393/0.4372, allocations: 145.5 kB / 0.5041 GB, free: 4.594 MB / 382.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.135e-05/0.4373, allocations: 10.66 kB / 0.5041 GB, free: 4.59 MB / 382.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005002/0.4378, allocations: 76.91 kB / 0.5042 GB, free: 4.547 MB / 382.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.991e-05/0.4378, allocations: 26.19 kB / 0.5042 GB, free: 4.539 MB / 382.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 20 * Number of states: 0 () * Number of discrete variables: 4 (limPID.I.local_reset,pID.I.local_reset,limIntegrator.local_reset,integrator.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (77): * Single equations (assignments): 77 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0001807/0.438, allocations: 217.3 kB / 0.5044 GB, free: 4.328 MB / 382.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001603/0.4382, allocations: 78.66 kB / 0.5045 GB, free: 4.285 MB / 382.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001657/0.4384, allocations: 97 kB / 0.5046 GB, free: 4.211 MB / 382.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.734e-06/0.4384, allocations: 5.344 kB / 0.5046 GB, free: 4.211 MB / 382.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.226e-05/0.4384, allocations: 1.25 kB / 0.5046 GB, free: 4.211 MB / 382.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.54e-06/0.4384, allocations: 1.438 kB / 0.5046 GB, free: 4.211 MB / 382.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001367/0.4398, allocations: 0.8638 MB / 0.5054 GB, free: 3.512 MB / 382.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.018e-06/0.4398, allocations: 1.75 kB / 0.5054 GB, free: 3.512 MB / 382.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006631/0.4404, allocations: 109.8 kB / 0.5055 GB, free: 3.477 MB / 382.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 8.046e-06/0.4405, allocations: 2 kB / 0.5055 GB, free: 3.477 MB / 382.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.039e-05/0.4405, allocations: 14.92 kB / 0.5055 GB, free: 3.469 MB / 382.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 6.492e-06/0.4405, allocations: 2 kB / 0.5055 GB, free: 3.469 MB / 382.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.767e-06/0.4405, allocations: 1.094 kB / 0.5055 GB, free: 3.469 MB / 382.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002221/0.4428, allocations: 1.136 MB / 0.5066 GB, free: 2.777 MB / 382.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0002322/0.443, allocations: 192.3 kB / 0.5068 GB, free: 2.602 MB / 382.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.679e-05/0.4431, allocations: 10.47 kB / 0.5068 GB, free: 2.598 MB / 382.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005187/0.4436, allocations: 50.25 kB / 0.5069 GB, free: 2.574 MB / 382.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.588e-05/0.4437, allocations: 47.81 kB / 0.5069 GB, free: 2.543 MB / 382.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.075e-05/0.4438, allocations: 8.938 kB / 0.5069 GB, free: 2.543 MB / 382.1 MB Notification: Performance of sorting global known variables: time 0.0006394/0.4444, allocations: 461.4 kB / 0.5074 GB, free: 2.289 MB / 382.1 MB Notification: Performance of sort global known variables: time 1.7e-07/0.4444, allocations: 0 / 0.5074 GB, free: 2.289 MB / 382.1 MB Notification: Performance of remove unused functions: time 0.0008936/0.4453, allocations: 193.1 kB / 0.5076 GB, free: 2.266 MB / 382.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 18 (limPID.I.y,limPID.D.x,transferFunction.x_scaled[1],stateSpace.x[1],stateSpace.x[2],lowpassButterworth.x1[1],lowpassButterworth.x2[1],criticalDamping.x[1],criticalDamping.x[2],integrator.y,limIntegrator.y,derivative.x,firstOrder.y,secondOrder.y,secondOrder.yd,pI.x,pID.I.y,pID.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): 44 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0001438/0.4455, allocations: 121.5 kB / 0.5077 GB, free: 2.156 MB / 382.1 MB Notification: Performance of simCode: created initialization part: time 0.002118/0.4476, allocations: 0.958 MB / 0.5086 GB, free: 1.75 MB / 382.1 MB Notification: Performance of simCode: created event and clocks part: time 3.466e-06/0.4476, allocations: 0 / 0.5086 GB, free: 1.75 MB / 382.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0005897/0.4482, allocations: 293.9 kB / 0.5089 GB, free: 1.621 MB / 382.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00102/0.4492, allocations: 195.1 kB / 0.5091 GB, free: 1.516 MB / 382.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00232/0.4516, allocations: 1.482 MB / 0.5105 GB, free: 0.5977 MB / 382.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004481/0.452, allocations: 0.951 MB / 0.5115 GB, free: 15.79 MB / 398.1 MB Notification: Performance of simCode: alias equations: time 0.0004783/0.4525, allocations: 151.3 kB / 0.5116 GB, free: 15.72 MB / 398.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001848/0.4527, allocations: 52.23 kB / 0.5116 GB, free: 15.7 MB / 398.1 MB Notification: Performance of SimCode: time 4.91e-07/0.4527, allocations: 0 / 0.5116 GB, free: 15.7 MB / 398.1 MB Notification: Performance of Templates: time 0.01535/0.4681, allocations: 7.751 MB / 0.5192 GB, free: 8.574 MB / 398.1 MB make -j1 -f ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState.makefile (rm -f ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState.pipe ; mkfifo ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState.pipe ; head -c 1048576 < ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState.pipe >> ../files/ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState.sim & ./ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState -abortSlowSimulation -alarm=480 -lv LOG_STATS > ModelicaTest_3.2.2_ModelicaTest.Blocks.Continuous_InitialState.pipe 2>&1)