Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint.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) 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(Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint,fileNamePrefix="Modelica_4_0_0_Modelica_Mechanics_MultiBody_Examples_Constraints_UniversalConstraint",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint,fileNamePrefix="Modelica_4_0_0_Modelica_Mechanics_MultiBody_Examples_Constraints_UniversalConstraint",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 0.001108/0.001108, allocations: 114.2 kB / 17.07 MB, free: 5.977 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00117/0.00117, allocations: 198.9 kB / 18.01 MB, free: 5.059 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.25/1.25, allocations: 222.9 MB / 241.7 MB, free: 15.07 MB / 206.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0009529/0.0009529, allocations: 43.92 kB / 350.8 MB, free: 3.73 MB / 286.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2259/0.2268, allocations: 49.44 MB / 400.2 MB, free: 8.398 MB / 318.1 MB Notification: Performance of NFInst.instantiate(Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint): time 0.01824/0.2451, allocations: 20.49 MB / 420.7 MB, free: 4.211 MB / 334.1 MB Notification: Performance of NFInst.instExpressions: time 0.01195/0.2571, allocations: 6.547 MB / 427.3 MB, free: 13.64 MB / 350.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.003293/0.2604, allocations: 159.5 kB / 427.4 MB, free: 13.48 MB / 350.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01126/0.2718, allocations: 7.068 MB / 434.5 MB, free: 6.395 MB / 350.1 MB Notification: Performance of NFTyping.typeBindings: time 0.006573/0.2784, allocations: 2.766 MB / 437.3 MB, free: 3.617 MB / 350.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.004743/0.2831, allocations: 2.545 MB / 439.8 MB, free: 1.066 MB / 350.1 MB Notification: Performance of NFFlatten.flatten: time 0.008571/0.2917, allocations: 7.12 MB / 446.9 MB, free: 9.934 MB / 366.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.008803/0.3005, allocations: 9.048 MB / 456 MB, free: 0.7891 MB / 366.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.004255/0.3048, allocations: 3.159 MB / 459.1 MB, free: 13.62 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.00483/0.3097, allocations: 3.969 MB / 463.1 MB, free: 9.637 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.001392/0.3111, allocations: 0.7227 MB / 463.8 MB, free: 8.914 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.003231/0.3143, allocations: 1.955 MB / 465.8 MB, free: 6.961 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.003105/0.3174, allocations: 3.772 MB / 469.6 MB, free: 3.18 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.004198/0.3217, allocations: 4.247 MB / 473.8 MB, free: 14.91 MB / 398.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01196/0.3336, allocations: 13.44 MB / 487.2 MB, free: 1.43 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.04e-06/0.3337, allocations: 3.938 kB / 487.2 MB, free: 1.426 MB / 398.1 MB Notification: Performance of FrontEnd: time 1.433e-06/0.3337, allocations: 0 / 487.2 MB, free: 1.426 MB / 398.1 MB Notification: Performance of Transformations before backend: time 0.0002772/0.334, allocations: 4 kB / 487.2 MB, free: 1.422 MB / 398.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2627 * Number of variables: 2627 Notification: Performance of Generate backend data structure: time 0.01817/0.3521, allocations: 9.188 MB / 496.4 MB, free: 8.145 MB / 414.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.41e-05/0.3522, allocations: 12.03 kB / 496.4 MB, free: 8.133 MB / 414.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.002014/0.3542, allocations: 1.259 MB / 497.7 MB, free: 6.859 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0076/0.3618, allocations: 2.373 MB / 0.4884 GB, free: 4.473 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01068/0.3725, allocations: 5.206 MB / 0.4934 GB, free: 15.18 MB / 430.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003249/0.3729, allocations: 492.4 kB / 0.4939 GB, free: 14.7 MB / 430.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001788/0.3747, allocations: 0.6402 MB / 0.4945 GB, free: 14.06 MB / 430.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03169/0.4064, allocations: 18.5 MB / 0.5126 GB, free: 10.57 MB / 446.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0002301/0.4066, allocations: 63.38 kB / 0.5127 GB, free: 10.51 MB / 446.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0008063/0.4075, allocations: 291.8 kB / 0.5129 GB, free: 10.22 MB / 446.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.004277/0.4117, allocations: 2.952 MB / 0.5158 GB, free: 7.266 MB / 446.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.03058/0.4423, allocations: 15.9 MB / 0.5313 GB, free: 7.352 MB / 462.1 MB 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 0.3909/0.8333, allocations: 69.42 MB / 0.5991 GB, free: 70.48 MB / 462.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.02235/0.8556, allocations: 8.807 MB / 0.6077 GB, free: 61.52 MB / 462.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.004849/0.8605, allocations: 5 MB / 0.6126 GB, free: 56.51 MB / 462.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0258/0.8863, allocations: 20.17 MB / 0.6323 GB, free: 35.91 MB / 462.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.982e-05/0.8864, allocations: 64.58 kB / 0.6324 GB, free: 35.84 MB / 462.1 MB Notification: Performance of pre-optimization done (n=313): time 6.292e-06/0.8865, allocations: 4 kB / 0.6324 GB, free: 35.84 MB / 462.1 MB Notification: Performance of matching and sorting (n=371): time 0.1007/0.9872, allocations: 43.7 MB / 0.6751 GB, free: 7.68 MB / 478.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.01438/1.002, allocations: 12.87 MB / 0.6876 GB, free: 10 MB / 494.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.007606/1.009, allocations: 5.992 MB / 0.6935 GB, free: 4 MB / 494.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0007668/1.01, allocations: 85.69 kB / 0.6936 GB, free: 3.91 MB / 494.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.002923/1.013, allocations: 5.06 MB / 0.6985 GB, free: 14.78 MB / 0.4982 GB Notification: Performance of collectInitialBindings (initialization): time 0.001537/1.015, allocations: 1.392 MB / 0.6999 GB, free: 13.37 MB / 0.4982 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002548/1.017, allocations: 1.951 MB / 0.7018 GB, free: 11.41 MB / 0.4982 GB Notification: Performance of setup shared object (initialization): time 7.688e-05/1.017, allocations: 309.1 kB / 0.7021 GB, free: 11.1 MB / 0.4982 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00575/1.023, allocations: 4.376 MB / 0.7063 GB, free: 6.719 MB / 0.4982 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.008599/1.032, allocations: 9.72 MB / 0.7158 GB, free: 10.38 MB / 0.5138 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01651/1.048, allocations: 15.23 MB / 0.7307 GB, free: 8.504 MB / 0.5294 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001148/1.048, allocations: 52 kB / 0.7308 GB, free: 8.453 MB / 0.5294 GB Notification: Performance of matching and sorting (n=1246) (initialization): time 0.2178/1.266, allocations: 17.36 MB / 0.7477 GB, free: 178.5 MB / 0.5294 GB Notification: Performance of prepare postOptimizeDAE: time 9.786e-05/1.266, allocations: 82.44 kB / 0.7478 GB, free: 178.5 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001643/1.266, allocations: 196 kB / 0.748 GB, free: 178.5 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.009296/1.276, allocations: 3.538 MB / 0.7514 GB, free: 178.4 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00706/1.283, allocations: 2.194 MB / 0.7536 GB, free: 178.3 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02738/1.31, allocations: 28.94 MB / 0.7818 GB, free: 159.9 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007047/1.317, allocations: 0.6087 MB / 0.7824 GB, free: 159.4 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001156/1.318, allocations: 0.5755 MB / 0.783 GB, free: 158.8 MB / 0.5294 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 851 * Number of states: 0 () * Number of discrete variables: 68 (sensorConstraintRelative.arrow.arrowLine.twoHeadedArrow,sensorConstraintRelative.arrow.headAtOrigin,freeMotionScalarInit.arrowColor[3],freeMotionScalarInit.arrowColor[2],freeMotionScalarInit.arrowColor[1],fixedTranslationOfConstraint.color[3],fixedTranslationOfConstraint.color[2],fixedTranslationOfConstraint.color[1],fixedTranslationOfJoint.color[3],fixedTranslationOfJoint.color[2],fixedTranslationOfJoint.color[1],fixedTranslation.color[3],fixedTranslation.color[2],fixedTranslation.color[1],fixedRotation.color[3],fixedRotation.color[2],fixedRotation.color[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[1],world.axisColor_x[3],world.axisColor_x[2],world.axisColor_x[1],world.groundColor[3],world.groundColor[2],world.groundColor[1],world.gravitySphereColor[3],world.gravitySphereColor[2],world.gravitySphereColor[1],springOfConstraint.color[3],springOfConstraint.color[2],springOfConstraint.color[1],springOfConstraint.massColor[3],springOfConstraint.massColor[2],springOfConstraint.massColor[1],springOfJoint.color[3],springOfJoint.color[2],springOfJoint.color[1],springOfJoint.massColor[3],springOfJoint.massColor[2],springOfJoint.massColor[1],bodyOfConstraint.color[3],bodyOfConstraint.color[2],bodyOfConstraint.color[1],bodyOfConstraint.body.sphereColor[3],bodyOfConstraint.body.sphereColor[2],bodyOfConstraint.body.sphereColor[1],bodyOfConstraint.frameTranslation.color[3],bodyOfConstraint.frameTranslation.color[2],bodyOfConstraint.frameTranslation.color[1],bodyOfJoint.color[3],bodyOfJoint.color[2],bodyOfJoint.color[1],bodyOfJoint.body.sphereColor[3],bodyOfJoint.body.sphereColor[2],bodyOfJoint.body.sphereColor[1],bodyOfJoint.frameTranslation.color[3],bodyOfJoint.frameTranslation.color[2],bodyOfJoint.frameTranslation.color[1],sensorConstraintRelative.arrowColor[3],sensorConstraintRelative.arrowColor[2],sensorConstraintRelative.arrowColor[1],constraint.sphereColor[3],constraint.sphereColor[2],constraint.sphereColor[1],joint.cylinderColor[3],joint.cylinderColor[2],joint.cylinderColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (1139): * Single equations (assignments): 1122 * Array equations: 10 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 7 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 6 systems {(3,20,100.0%), (1,7,100.0%), (2,24,100.0%), (2,1,100.0%), (2,1,100.0%), (2,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,7)} Notification: Performance of prepare postOptimizeDAE: time 0.004629/1.323, allocations: 3.515 MB / 0.7864 GB, free: 155.4 MB / 0.5294 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0009323/1.324, allocations: 0.5609 MB / 0.787 GB, free: 155.2 MB / 0.5294 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01641/1.34, allocations: 10.23 MB / 0.797 GB, free: 144.9 MB / 0.5294 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.0145/1.355, allocations: 8.96 MB / 0.8057 GB, free: 135.8 MB / 0.5294 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 0.01394/1.369, allocations: 8.816 MB / 0.8143 GB, free: 126.9 MB / 0.5294 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.933e-05/1.369, allocations: 19.94 kB / 0.8143 GB, free: 126.9 MB / 0.5294 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03693/1.406, allocations: 23.82 MB / 0.8376 GB, free: 103 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.408e-05/1.406, allocations: 4 kB / 0.8376 GB, free: 103 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002999/1.409, allocations: 0.6084 MB / 0.8382 GB, free: 102.4 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.008024/1.417, allocations: 2.961 MB / 0.8411 GB, free: 99.45 MB / 0.5294 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006333/1.418, allocations: 71.97 kB / 0.8412 GB, free: 99.38 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0233/1.441, allocations: 22.71 MB / 0.8633 GB, free: 76.28 MB / 0.5294 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.005463/1.446, allocations: 6.022 MB / 0.8692 GB, free: 70.01 MB / 0.5294 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02064/1.467, allocations: 14.77 MB / 0.8836 GB, free: 55.36 MB / 0.5294 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001393/1.469, allocations: 0.5991 MB / 0.8842 GB, free: 54.73 MB / 0.5294 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000981/1.47, allocations: 56 kB / 0.8843 GB, free: 54.68 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003042/1.473, allocations: 263.6 kB / 0.8845 GB, free: 54.42 MB / 0.5294 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000725/1.473, allocations: 241.6 kB / 0.8848 GB, free: 54.19 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000278/1.474, allocations: 99.98 kB / 0.8849 GB, free: 54.09 MB / 0.5294 GB Notification: Performance of sorting global known variables: time 0.004503/1.478, allocations: 3.746 MB / 0.8885 GB, free: 50.35 MB / 0.5294 GB Notification: Performance of sort global known variables: time 3.91e-07/1.478, allocations: 0 / 0.8885 GB, free: 50.35 MB / 0.5294 GB Notification: Performance of remove unused functions: time 0.008455/1.487, allocations: 2.053 MB / 0.8905 GB, free: 48.3 MB / 0.5294 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 16 * Number of states: 8 ($STATESET2.x[2],$STATESET2.x[1],$STATESET1.x[2],$STATESET1.x[1],joint.phi_a,joint.phi_b,joint.w_a,joint.w_b) * 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 (280): * Single equations (assignments): 272 * Array equations: 4 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 3 systems {(4,19,75.0%), (3,17,100.0%), (3,8,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(3,12)} Notification: Performance of Backend phase and start with SimCode phase: time 0.02078/1.507, allocations: 15.52 MB / 0.9057 GB, free: 32.65 MB / 0.5294 GB Notification: Performance of simCode: created initialization part: time 0.01455/1.522, allocations: 11.37 MB / 0.9168 GB, free: 21.21 MB / 0.5294 GB Notification: Performance of simCode: created event and clocks part: time 9.067e-06/1.522, allocations: 384 / 0.9168 GB, free: 21.21 MB / 0.5294 GB Notification: Performance of simCode: created simulation system equations: time 0.006413/1.528, allocations: 4.721 MB / 0.9214 GB, free: 16.44 MB / 0.5294 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004761/1.533, allocations: 0.912 MB / 0.9223 GB, free: 15.54 MB / 0.5294 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.3062/1.839, allocations: 87.76 MB / 1.008 GB, free: 119.7 MB / 0.5294 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00842/1.848, allocations: 5.36 MB / 1.013 GB, free: 114.3 MB / 0.5294 GB Notification: Performance of simCode: alias equations: time 0.007228/1.855, allocations: 3.076 MB / 1.016 GB, free: 111.3 MB / 0.5294 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.005004/1.86, allocations: 3.526 MB / 1.02 GB, free: 107.7 MB / 0.5294 GB Notification: Performance of SimCode: time 1.002e-06/1.86, allocations: 0 / 1.02 GB, free: 107.7 MB / 0.5294 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.3812/2.241, allocations: 143.3 MB / 1.16 GB, free: 182.6 MB / 0.545 GB Notification: Performance of buildModelFMU: Generate platform static: time 26.5/28.74, allocations: 14.88 kB / 1.16 GB, free: 182.5 MB / 0.545 GB (rm -f Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint.pipe ; mkfifo Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint.pipe ; head -c 1048576 < Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint.pipe >> ../files/Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint_res.mat --tempDir=temp_Modelica_4_0_0_Modelica_Mechanics_MultiBody_Examples_Constraints_UniversalConstraint_fmu --startTime=0 --stopTime=10 --timeout=50 --tolerance=1e-06 Modelica_4_0_0_Modelica_Mechanics_MultiBody_Examples_Constraints_UniversalConstraint.fmu > Modelica_4.0.0_Modelica.Mechanics.MultiBody.Examples.Constraints.UniversalConstraint.pipe 2>&1)