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 0.006655/0.006655, allocations: 99.81 kB / 15.73 MB, free: 6.492 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001278/0.001278, allocations: 203.9 kB / 16.68 MB, free: 6.375 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.614/1.614, allocations: 205.1 MB / 222.5 MB, free: 4.531 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 0.001158/0.001158, allocations: 49.77 kB / 326.5 MB, free: 14.34 MB / 270.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.109/0.1102, allocations: 46.62 MB / 373.2 MB, free: 1.32 MB / 302.1 MB Notification: Performance of NFInst.instantiate(Modelica.Mechanics.MultiBody.Examples.Constraints.SphericalConstraint): time 0.02094/0.1311, allocations: 19.45 MB / 392.6 MB, free: 13.78 MB / 334.1 MB Notification: Performance of NFInst.instExpressions: time 0.01433/0.1455, allocations: 6.284 MB / 398.9 MB, free: 7.477 MB / 334.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.005389/0.151, allocations: 143.6 kB / 399 MB, free: 7.336 MB / 334.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01134/0.1624, allocations: 6.059 MB / 405.1 MB, free: 1.258 MB / 334.1 MB Notification: Performance of NFTyping.typeBindings: time 0.009334/0.1718, allocations: 2.719 MB / 407.8 MB, free: 14.53 MB / 350.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.007208/0.179, allocations: 2.51 MB / 410.3 MB, free: 12.01 MB / 350.1 MB Notification: Performance of NFFlatten.flatten: time 0.01287/0.1919, allocations: 7.078 MB / 417.4 MB, free: 4.914 MB / 350.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.01362/0.2056, allocations: 8.104 MB / 425.5 MB, free: 12.71 MB / 366.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.005891/0.2115, allocations: 2.816 MB / 428.3 MB, free: 9.887 MB / 366.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.006552/0.2181, allocations: 3.606 MB / 431.9 MB, free: 6.27 MB / 366.1 MB Notification: Performance of NFPackage.collectConstants: time 0.00245/0.2206, allocations: 0.6406 MB / 432.6 MB, free: 5.629 MB / 366.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.005543/0.2261, allocations: 2.009 MB / 434.6 MB, free: 3.617 MB / 366.1 MB Notification: Performance of NFScalarize.scalarize: time 0.007532/0.2337, allocations: 3.484 MB / 438.1 MB, free: 128 kB / 366.1 MB Notification: Performance of NFVerifyModel.verify: time 0.009423/0.2432, allocations: 3.87 MB / 441.9 MB, free: 12.23 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.4905/0.7337, allocations: 12.39 MB / 454.3 MB, free: 27.46 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.12e-06/0.7338, allocations: 0.6562 kB / 454.3 MB, free: 27.46 MB / 382.1 MB Notification: Performance of FrontEnd: time 1.863e-06/0.7338, allocations: 0 / 454.3 MB, free: 27.46 MB / 382.1 MB Notification: Performance of Transformations before backend: time 0.0005393/0.7343, allocations: 0 / 454.3 MB, free: 27.46 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 0.0325/0.7668, allocations: 8.641 MB / 463 MB, free: 24.33 MB / 382.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.36e-05/0.7669, allocations: 11.11 kB / 463 MB, free: 24.33 MB / 382.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01274/0.7797, allocations: 2.392 MB / 465.4 MB, free: 23.83 MB / 382.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01404/0.7937, allocations: 4.473 MB / 469.8 MB, free: 22.97 MB / 382.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005476/0.7943, allocations: 435.7 kB / 470.3 MB, free: 22.96 MB / 382.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.003724/0.7981, allocations: 0.671 MB / 470.9 MB, free: 22.94 MB / 382.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03633/0.8344, allocations: 16.92 MB / 487.9 MB, free: 18.25 MB / 382.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0002936/0.8348, allocations: 66.27 kB / 487.9 MB, free: 18.24 MB / 382.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.002183/0.837, allocations: 268.5 kB / 488.2 MB, free: 18.09 MB / 382.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.003723/0.8407, allocations: 2.588 MB / 490.8 MB, free: 17.64 MB / 382.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.02924/0.87, allocations: 14.56 MB / 0.4935 GB, free: 5.301 MB / 382.1 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 0.1091/0.9791, allocations: 63.89 MB / 0.5559 GB, free: 4.691 MB / 446.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.02273/1.002, allocations: 7.376 MB / 0.5631 GB, free: 13.19 MB / 462.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.005685/1.008, allocations: 3.802 MB / 0.5668 GB, free: 9.375 MB / 462.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.03371/1.041, allocations: 16.64 MB / 0.5831 GB, free: 8.352 MB / 478.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.526e-05/1.041, allocations: 60.12 kB / 0.5831 GB, free: 8.289 MB / 478.1 MB Notification: Performance of pre-optimization done (n=262): time 6.612e-06/1.041, allocations: 4 kB / 0.5831 GB, free: 8.285 MB / 478.1 MB Notification: Performance of matching and sorting (n=278): time 0.08109/1.123, allocations: 27.96 MB / 0.6104 GB, free: 12.14 MB / 0.4982 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.001615/1.124, allocations: 1.71 MB / 0.6121 GB, free: 10.25 MB / 0.4982 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01118/1.135, allocations: 5.893 MB / 0.6178 GB, free: 4.348 MB / 0.4982 GB Notification: Performance of collectPreVariables (initialization): time 0.0007669/1.136, allocations: 61.7 kB / 0.6179 GB, free: 4.281 MB / 0.4982 GB Notification: Performance of collectInitialEqns (initialization): time 0.004209/1.14, allocations: 5.05 MB / 0.6228 GB, free: 15.27 MB / 0.5138 GB Notification: Performance of collectInitialBindings (initialization): time 0.001959/1.142, allocations: 1.132 MB / 0.6239 GB, free: 14.16 MB / 0.5138 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.005454/1.148, allocations: 1.853 MB / 0.6257 GB, free: 12.29 MB / 0.5138 GB Notification: Performance of setup shared object (initialization): time 0.0001018/1.148, allocations: 307.1 kB / 0.626 GB, free: 11.99 MB / 0.5138 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.006115/1.154, allocations: 3.422 MB / 0.6294 GB, free: 8.562 MB / 0.5138 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.2624/1.417, allocations: 8.86 MB / 0.638 GB, free: 186.1 MB / 0.5138 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01783/1.435, allocations: 13.27 MB / 0.651 GB, free: 176.7 MB / 0.5138 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0003301/1.435, allocations: 55 kB / 0.651 GB, free: 176.7 MB / 0.5138 GB Notification: Performance of matching and sorting (n=1192) (initialization): time 0.03462/1.47, allocations: 14.92 MB / 0.6656 GB, free: 171.7 MB / 0.5138 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001367/1.47, allocations: 90 kB / 0.6657 GB, free: 171.7 MB / 0.5138 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.01549/1.485, allocations: 6.792 MB / 0.6723 GB, free: 169.6 MB / 0.5138 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01307/1.498, allocations: 3.23 MB / 0.6755 GB, free: 168.9 MB / 0.5138 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007288/1.506, allocations: 2.135 MB / 0.6776 GB, free: 166.7 MB / 0.5138 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01709/1.523, allocations: 17.03 MB / 0.6942 GB, free: 149 MB / 0.5138 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.008828/1.532, allocations: 0.5847 MB / 0.6948 GB, free: 148.4 MB / 0.5138 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002067/1.534, allocations: 0.542 MB / 0.6953 GB, free: 147.9 MB / 0.5138 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 0.007206/1.541, allocations: 3.242 MB / 0.6985 GB, free: 144.8 MB / 0.5138 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001546/1.543, allocations: 0.5431 MB / 0.699 GB, free: 144.5 MB / 0.5138 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01118/1.554, allocations: 6.572 MB / 0.7054 GB, free: 137.9 MB / 0.5138 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.009579/1.563, allocations: 5.662 MB / 0.711 GB, free: 132.1 MB / 0.5138 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 0.00865/1.572, allocations: 5.482 MB / 0.7163 GB, free: 126.5 MB / 0.5138 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.471e-05/1.572, allocations: 15.95 kB / 0.7163 GB, free: 126.5 MB / 0.5138 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03669/1.609, allocations: 17.49 MB / 0.7334 GB, free: 108.9 MB / 0.5138 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.162e-05/1.609, allocations: 15.98 kB / 0.7334 GB, free: 108.9 MB / 0.5138 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002574/1.612, allocations: 0.5037 MB / 0.7339 GB, free: 108.4 MB / 0.5138 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.005403/1.617, allocations: 1.852 MB / 0.7357 GB, free: 106.5 MB / 0.5138 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000716/1.618, allocations: 67.97 kB / 0.7358 GB, free: 106.5 MB / 0.5138 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.011/1.629, allocations: 10.4 MB / 0.7459 GB, free: 95.72 MB / 0.5138 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.0009736/1.63, allocations: 1.556 MB / 0.7475 GB, free: 94.04 MB / 0.5138 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01719/1.647, allocations: 9.874 MB / 0.7571 GB, free: 84.18 MB / 0.5138 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002246/1.649, allocations: 0.5999 MB / 0.7577 GB, free: 83.57 MB / 0.5138 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.00199/1.651, allocations: 59.98 kB / 0.7577 GB, free: 83.51 MB / 0.5138 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004045/1.655, allocations: 226.5 kB / 0.758 GB, free: 83.29 MB / 0.5138 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0008812/1.656, allocations: 193.5 kB / 0.7581 GB, free: 83.1 MB / 0.5138 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0005328/1.657, allocations: 87.97 kB / 0.7582 GB, free: 83.02 MB / 0.5138 GB Notification: Performance of sorting global known variables: time 0.007512/1.664, allocations: 3.66 MB / 0.7618 GB, free: 79.36 MB / 0.5138 GB Notification: Performance of sort global known variables: time 5.71e-07/1.664, allocations: 0 / 0.7618 GB, free: 79.36 MB / 0.5138 GB Notification: Performance of remove unused functions: time 0.01158/1.676, allocations: 1.717 MB / 0.7635 GB, free: 77.65 MB / 0.5138 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 0.001426/1.677, allocations: 287.3 kB / 0.7638 GB, free: 77.37 MB / 0.5138 GB Notification: Performance of simCode: created initialization part: time 0.01628/1.694, allocations: 9.226 MB / 0.7728 GB, free: 68.05 MB / 0.5138 GB Notification: Performance of simCode: created event and clocks part: time 1.424e-05/1.694, allocations: 3.938 kB / 0.7728 GB, free: 68.05 MB / 0.5138 GB Notification: Performance of simCode: created simulation system equations: time 0.006659/1.7, allocations: 3.399 MB / 0.7761 GB, free: 64.56 MB / 0.5138 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.009675/1.71, allocations: 0.8643 MB / 0.7769 GB, free: 63.7 MB / 0.5138 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03309/1.743, allocations: 15.49 MB / 0.7921 GB, free: 48.04 MB / 0.5138 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.009093/1.752, allocations: 4.872 MB / 0.7968 GB, free: 43.13 MB / 0.5138 GB Notification: Performance of simCode: alias equations: time 0.007548/1.76, allocations: 2.914 MB / 0.7997 GB, free: 40.21 MB / 0.5138 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001806/1.762, allocations: 367.4 kB / 0.8 GB, free: 39.85 MB / 0.5138 GB Notification: Performance of SimCode: time 1.132e-06/1.762, allocations: 0 / 0.8 GB, free: 39.85 MB / 0.5138 GB Notification: Performance of Templates: time 0.3751/2.137, allocations: 61.07 MB / 0.8597 GB, free: 164.6 MB / 0.5138 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)