Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.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) 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(Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint") translateModel(Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001092/0.001092, allocations: 111.3 kB / 15.23 MB, free: 0.6602 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001104/0.001104, allocations: 194.5 kB / 16.14 MB, free: 6.668 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.627/1.627, allocations: 205.1 MB / 222 MB, free: 4.742 MB / 174.1 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: Performance of FrontEnd - loaded program: time 0.001114/0.001115, allocations: 43.94 kB / 278 MB, free: 12.76 MB / 238.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.283/0.2841, allocations: 46.63 MB / 324.7 MB, free: 1.953 MB / 254.1 MB Notification: Performance of NFInst.instantiate(Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint): time 0.07819/0.3624, allocations: 85.83 MB / 410.5 MB, free: 14.02 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.04488/0.4073, allocations: 17.34 MB / 427.8 MB, free: 12.62 MB / 366.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.02253/0.4299, allocations: 387 kB / 428.2 MB, free: 12.24 MB / 366.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01126/0.4412, allocations: 6.086 MB / 434.3 MB, free: 6.141 MB / 366.1 MB Notification: Performance of NFTyping.typeBindings: time 0.00827/0.4495, allocations: 2.495 MB / 436.8 MB, free: 3.637 MB / 366.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.005361/0.4549, allocations: 2.429 MB / 439.2 MB, free: 1.203 MB / 366.1 MB Notification: Performance of NFFlatten.flatten: time 0.0132/0.4681, allocations: 10.22 MB / 449.5 MB, free: 6.957 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.2789/0.7471, allocations: 8.084 MB / 457.5 MB, free: 7.121 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.007424/0.7545, allocations: 2.518 MB / 460.1 MB, free: 7.121 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.008099/0.7627, allocations: 3.85 MB / 463.9 MB, free: 7.121 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.002755/0.7655, allocations: 479.2 kB / 464.4 MB, free: 7.121 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.005792/0.7713, allocations: 1.935 MB / 466.3 MB, free: 7.121 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.005715/0.7771, allocations: 3.308 MB / 469.6 MB, free: 6.902 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.009265/0.7864, allocations: 3.69 MB / 473.3 MB, free: 5.625 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0176/0.804, allocations: 11.88 MB / 485.2 MB, free: 4.105 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 7.654e-06/0.8041, allocations: 0 / 485.2 MB, free: 4.105 MB / 382.1 MB Notification: Performance of FrontEnd: time 3.096e-06/0.8041, allocations: 0 / 485.2 MB, free: 4.105 MB / 382.1 MB Notification: Performance of Transformations before backend: time 0.0006802/0.8048, allocations: 0 / 485.2 MB, free: 4.105 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: 2401 * Number of variables: 2401 Notification: Performance of Generate backend data structure: time 0.03264/0.8374, allocations: 8.433 MB / 493.6 MB, free: 15.87 MB / 398.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.228e-05/0.8375, allocations: 9.906 kB / 493.6 MB, free: 15.87 MB / 398.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01195/0.8494, allocations: 2.351 MB / 496 MB, free: 14.71 MB / 398.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01173/0.8612, allocations: 4.36 MB / 0.4886 GB, free: 13.26 MB / 398.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003422/0.8616, allocations: 435 kB / 0.489 GB, free: 13.25 MB / 398.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.003886/0.8655, allocations: 0.6628 MB / 0.4897 GB, free: 13.21 MB / 398.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.04484/0.9103, allocations: 16.93 MB / 0.5062 GB, free: 3.258 MB / 398.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0004105/0.9108, allocations: 62.62 kB / 0.5063 GB, free: 3.223 MB / 398.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.003401/0.9142, allocations: 271.7 kB / 0.5065 GB, free: 3.004 MB / 398.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.007009/0.9213, allocations: 2.589 MB / 0.5091 GB, free: 460 kB / 398.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.05936/0.9807, allocations: 14.57 MB / 0.5233 GB, free: 2.133 MB / 414.1 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 0.1314/1.112, allocations: 64.08 MB / 0.5859 GB, free: 1.234 MB / 478.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.02199/1.134, allocations: 7.374 MB / 0.5931 GB, free: 9.727 MB / 494.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.005899/1.14, allocations: 3.803 MB / 0.5968 GB, free: 5.918 MB / 494.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.02763/1.168, allocations: 16.63 MB / 0.613 GB, free: 4.84 MB / 0.4981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 7.869e-05/1.168, allocations: 60.56 kB / 0.6131 GB, free: 4.773 MB / 0.4981 GB Notification: Performance of pre-optimization done (n=262): time 7.104e-06/1.168, allocations: 0 / 0.6131 GB, free: 4.773 MB / 0.4981 GB Notification: Performance of matching and sorting (n=278): time 0.3099/1.478, allocations: 27.59 MB / 0.64 GB, free: 234.7 MB / 0.5137 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.001286/1.479, allocations: 1.617 MB / 0.6416 GB, free: 233.2 MB / 0.5137 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01527/1.494, allocations: 5.88 MB / 0.6473 GB, free: 232.3 MB / 0.5137 GB Notification: Performance of collectPreVariables (initialization): time 0.001241/1.496, allocations: 67.66 kB / 0.6474 GB, free: 232.3 MB / 0.5137 GB Notification: Performance of collectInitialEqns (initialization): time 0.005029/1.501, allocations: 4.844 MB / 0.6521 GB, free: 228.6 MB / 0.5137 GB Notification: Performance of collectInitialBindings (initialization): time 0.002627/1.503, allocations: 1.092 MB / 0.6532 GB, free: 227.8 MB / 0.5137 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.004356/1.508, allocations: 1.834 MB / 0.655 GB, free: 226.9 MB / 0.5137 GB Notification: Performance of setup shared object (initialization): time 5.197e-05/1.508, allocations: 304.2 kB / 0.6553 GB, free: 226.6 MB / 0.5137 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005361/1.513, allocations: 3.425 MB / 0.6586 GB, free: 225.5 MB / 0.5137 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.008237/1.522, allocations: 8.864 MB / 0.6673 GB, free: 217 MB / 0.5137 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01443/1.536, allocations: 13.27 MB / 0.6802 GB, free: 206.1 MB / 0.5137 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001696/1.536, allocations: 53.97 kB / 0.6803 GB, free: 206.1 MB / 0.5137 GB Notification: Performance of matching and sorting (n=1192) (initialization): time 0.0339/1.57, allocations: 14.89 MB / 0.6948 GB, free: 193.5 MB / 0.5137 GB Notification: Performance of prepare postOptimizeDAE: time 0.000297/1.57, allocations: 88 kB / 0.6949 GB, free: 193.5 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.01538/1.586, allocations: 6.799 MB / 0.7015 GB, free: 186.8 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01192/1.598, allocations: 3.233 MB / 0.7047 GB, free: 183.6 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.006957/1.605, allocations: 2.137 MB / 0.7068 GB, free: 181.4 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01531/1.62, allocations: 15.83 MB / 0.7222 GB, free: 164.8 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01022/1.63, allocations: 0.5812 MB / 0.7228 GB, free: 164.2 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002329/1.633, allocations: 0.5488 MB / 0.7233 GB, free: 163.7 MB / 0.5137 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 875 * Number of states: 0 () * Number of discrete variables: 60 (freeMotionScalarInit.arrowColor[3],freeMotionScalarInit.arrowColor[2],freeMotionScalarInit.arrowColor[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.sphereColor[3],joint.sphereColor[2],joint.sphereColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (1128): * Single equations (assignments): 1112 * Array equations: 8 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 3 * Torn equation systems: 5 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(3,100.0%), (4,100.0%)} * Non-linear Jacobian (size): 1 system {4} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 5 systems {(3,3,100.0%), (3,3,100.0%), (2,1,100.0%), (2,1,100.0%), (2,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.008699/1.641, allocations: 3.249 MB / 0.7265 GB, free: 160.4 MB / 0.5137 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001825/1.643, allocations: 0.5168 MB / 0.727 GB, free: 159.9 MB / 0.5137 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01095/1.654, allocations: 6.571 MB / 0.7334 GB, free: 153.2 MB / 0.5137 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.008838/1.663, allocations: 5.653 MB / 0.739 GB, free: 147.5 MB / 0.5137 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 0.008442/1.672, allocations: 5.496 MB / 0.7443 GB, free: 141.9 MB / 0.5137 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.479e-05/1.672, allocations: 11.95 kB / 0.7443 GB, free: 141.9 MB / 0.5137 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03078/1.703, allocations: 17.49 MB / 0.7614 GB, free: 124.2 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.283e-05/1.703, allocations: 8 kB / 0.7614 GB, free: 124.2 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002451/1.705, allocations: 0.507 MB / 0.7619 GB, free: 123.7 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.004951/1.71, allocations: 1.85 MB / 0.7637 GB, free: 121.8 MB / 0.5137 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0004742/1.711, allocations: 71.97 kB / 0.7638 GB, free: 121.8 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.009554/1.72, allocations: 9.754 MB / 0.7733 GB, free: 111.6 MB / 0.5137 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.0007551/1.721, allocations: 1.484 MB / 0.7748 GB, free: 110 MB / 0.5137 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01399/1.735, allocations: 9.835 MB / 0.7844 GB, free: 99.96 MB / 0.5137 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001914/1.737, allocations: 0.5723 MB / 0.7849 GB, free: 99.36 MB / 0.5137 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0009093/1.738, allocations: 63.98 kB / 0.785 GB, free: 99.3 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002258/1.74, allocations: 223.7 kB / 0.7852 GB, free: 99.08 MB / 0.5137 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004916/1.741, allocations: 197.3 kB / 0.7854 GB, free: 98.89 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001993/1.741, allocations: 83.98 kB / 0.7855 GB, free: 98.81 MB / 0.5137 GB Notification: Performance of sorting global known variables: time 0.005179/1.746, allocations: 3.664 MB / 0.7891 GB, free: 95.14 MB / 0.5137 GB Notification: Performance of sort global known variables: time 2.71e-07/1.746, allocations: 0 / 0.7891 GB, free: 95.14 MB / 0.5137 GB Notification: Performance of remove unused functions: time 0.009351/1.755, allocations: 1.716 MB / 0.7907 GB, free: 93.44 MB / 0.5137 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 43 * Number of states: 12 ($STATESET1.x[3],$STATESET1.x[2],$STATESET1.x[1],joint.w_rel[1],joint.w_rel[2],joint.w_rel[3],bodyOfConstraint.body.w_a[1],bodyOfConstraint.body.w_a[2],bodyOfConstraint.body.w_a[3],freeMotionScalarInit.derd[1].u,freeMotionScalarInit.derd[2].u,freeMotionScalarInit.derd[3].u) * 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 (233): * Single equations (assignments): 223 * Array equations: 4 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 3 systems {(2,100.0%), (3,100.0%), (4,100.0%)} * Non-linear Jacobian (size): 1 system {4} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(3,3,100.0%), (3,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0009619/1.756, allocations: 286.3 kB / 0.791 GB, free: 93.16 MB / 0.5137 GB Notification: Performance of simCode: created initialization part: time 0.01357/1.77, allocations: 9.173 MB / 0.8 GB, free: 83.91 MB / 0.5137 GB Notification: Performance of simCode: created event and clocks part: time 1.122e-05/1.77, allocations: 128 / 0.8 GB, free: 83.91 MB / 0.5137 GB Notification: Performance of simCode: created simulation system equations: time 0.004987/1.775, allocations: 3.388 MB / 0.8033 GB, free: 80.43 MB / 0.5137 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00673/1.782, allocations: 0.8139 MB / 0.8041 GB, free: 79.62 MB / 0.5137 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02539/1.807, allocations: 18.69 MB / 0.8223 GB, free: 60.79 MB / 0.5137 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.005042/1.812, allocations: 4.881 MB / 0.8271 GB, free: 55.88 MB / 0.5137 GB Notification: Performance of simCode: alias equations: time 0.007287/1.819, allocations: 2.907 MB / 0.8299 GB, free: 52.96 MB / 0.5137 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001218/1.821, allocations: 375.4 kB / 0.8303 GB, free: 52.59 MB / 0.5137 GB Notification: Performance of SimCode: time 8.92e-07/1.821, allocations: 0 / 0.8303 GB, free: 52.59 MB / 0.5137 GB Notification: Performance of Templates: time 0.2994/2.12, allocations: 63.55 MB / 0.8923 GB, free: 208.9 MB / 0.5137 GB make -j1 -f Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.makefile (rm -f Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.pipe ; mkfifo Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.pipe ; head -c 1048576 < Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.pipe >> ../files/Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.sim & ./Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint -abortSlowSimulation -alarm=480 -lv LOG_STATS > Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint.pipe 2>&1)