Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque2.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo", uses=false) Using package ModelicaTest with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo) Using package Modelica with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo) Using package Complex with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo) Using package ModelicaServices with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo) Running command: "" <> buildModelFMU(ModelicaTest.MultiBody.Sensors.CutForceAndTorque2,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Sensors_CutForceAndTorque2",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ModelicaTest.MultiBody.Sensors.CutForceAndTorque2,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Sensors_CutForceAndTorque2",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo): time 0.001859/0.001859, allocations: 104.1 kB / 17.63 MB, free: 5.344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo): time 0.002248/0.002249, allocations: 214.4 kB / 18.59 MB, free: 4.402 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo): time 1.626/1.626, allocations: 227.4 MB / 246.8 MB, free: 10.48 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo): time 0.2277/0.2277, allocations: 46.11 MB / 344.2 MB, free: 11.51 MB / 286.1 MB Warning: Requested package Modelica of version 4.1.0, but this package was already loaded with version trunk. OpenModelica cannot reason about compatibility between the two packages since they are not semantic versions. Notification: Performance of FrontEnd - loaded program: time 0.002288/0.002288, allocations: 76.11 kB / 417.8 MB, free: 19.57 MB / 302.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1291/0.1314, allocations: 62.46 MB / 480.2 MB, free: 5.09 MB / 350.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.MultiBody.Sensors.CutForceAndTorque2): time 0.02/0.1514, allocations: 16.27 MB / 496.5 MB, free: 4.746 MB / 366.1 MB Notification: Performance of NFInst.instExpressions: time 0.01185/0.1633, allocations: 5.384 MB / 0.4901 GB, free: 15.35 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.002577/0.1659, allocations: 131.6 kB / 0.4902 GB, free: 15.22 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01329/0.1793, allocations: 7.45 MB / 0.4975 GB, free: 7.746 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.00827/0.1876, allocations: 2.922 MB / 0.5004 GB, free: 4.812 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.004908/0.1925, allocations: 1.7 MB / 0.502 GB, free: 3.109 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.2485/0.441, allocations: 8.4 MB / 0.5102 GB, free: 12.17 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.01349/0.4546, allocations: 8.923 MB / 0.5189 GB, free: 10.95 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.007585/0.4622, allocations: 3.401 MB / 0.5223 GB, free: 10.69 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.007278/0.4695, allocations: 4.35 MB / 0.5265 GB, free: 9.719 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.002937/0.4725, allocations: 0.7047 MB / 0.5272 GB, free: 9.719 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.004179/0.4767, allocations: 1.524 MB / 0.5287 GB, free: 9.562 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.005116/0.4819, allocations: 4.015 MB / 0.5326 GB, free: 8.152 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.006809/0.4887, allocations: 4.487 MB / 0.537 GB, free: 5.027 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01532/0.504, allocations: 13.21 MB / 0.5499 GB, free: 10.75 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 1.028e-05/0.5041, allocations: 0 / 0.5499 GB, free: 10.75 MB / 398.1 MB Notification: Performance of FrontEnd: time 2.305e-06/0.5041, allocations: 0 / 0.5499 GB, free: 10.75 MB / 398.1 MB Notification: Performance of Transformations before backend: time 0.0005933/0.5047, allocations: 0 / 0.5499 GB, free: 10.75 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: 2873 * Number of variables: 2873 Notification: Performance of Generate backend data structure: time 0.02824/0.533, allocations: 9.606 MB / 0.5593 GB, free: 1.227 MB / 398.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.62e-05/0.533, allocations: 12.03 kB / 0.5593 GB, free: 1.215 MB / 398.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.004218/0.5373, allocations: 1.365 MB / 0.5606 GB, free: 15.9 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01193/0.5492, allocations: 2.632 MB / 0.5632 GB, free: 13.26 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01731/0.5666, allocations: 5.711 MB / 0.5688 GB, free: 7.824 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0009599/0.5676, allocations: 0.4995 MB / 0.5692 GB, free: 7.383 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.004222/0.5719, allocations: 0.6524 MB / 0.5699 GB, free: 6.793 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.06254/0.6344, allocations: 19.59 MB / 0.589 GB, free: 2.352 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0005864/0.6351, allocations: 84.89 kB / 0.5891 GB, free: 2.301 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.004054/0.6391, allocations: 309.3 kB / 0.5894 GB, free: 2.059 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.008515/0.6477, allocations: 3.302 MB / 0.5926 GB, free: 14.79 MB / 446.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.04066/0.6884, allocations: 14.99 MB / 0.6072 GB, free: 104 kB / 446.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.1189/0.8073, allocations: 71.54 MB / 0.6771 GB, free: 7.676 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.02069/0.8281, allocations: 6.45 MB / 0.6834 GB, free: 1.078 MB / 0.5137 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.004152/0.8322, allocations: 2.354 MB / 0.6857 GB, free: 14.71 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.02297/0.8552, allocations: 10.82 MB / 0.6963 GB, free: 3.488 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 7.229e-05/0.8554, allocations: 55.86 kB / 0.6963 GB, free: 3.422 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=212): time 6.172e-06/0.8554, allocations: 3.188 kB / 0.6963 GB, free: 3.422 MB / 0.5294 GB Notification: Performance of matching and sorting (n=236): time 0.05277/0.9082, allocations: 16.46 MB / 0.7124 GB, free: 2.953 MB / 0.545 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001147/0.9083, allocations: 150.5 kB / 0.7125 GB, free: 2.773 MB / 0.545 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.4179/1.326, allocations: 6.657 MB / 0.719 GB, free: 186 MB / 0.545 GB Notification: Performance of collectPreVariables (initialization): time 0.0003764/1.327, allocations: 61.64 kB / 0.7191 GB, free: 186 MB / 0.545 GB Notification: Performance of collectInitialEqns (initialization): time 0.004454/1.331, allocations: 5.656 MB / 0.7246 GB, free: 182.5 MB / 0.545 GB Notification: Performance of collectInitialBindings (initialization): time 0.00117/1.332, allocations: 0.9296 MB / 0.7255 GB, free: 181.9 MB / 0.545 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002541/1.335, allocations: 1.802 MB / 0.7273 GB, free: 181 MB / 0.545 GB Notification: Performance of setup shared object (initialization): time 4.778e-05/1.335, allocations: 302.9 kB / 0.7276 GB, free: 180.7 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004474/1.339, allocations: 2.5 MB / 0.73 GB, free: 179.9 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.007841/1.347, allocations: 8.203 MB / 0.738 GB, free: 171.5 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01278/1.36, allocations: 11.67 MB / 0.7494 GB, free: 161 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0002833/1.36, allocations: 55.03 kB / 0.7495 GB, free: 161 MB / 0.545 GB Notification: Performance of matching and sorting (n=1177) (initialization): time 0.02222/1.383, allocations: 10.34 MB / 0.7596 GB, free: 157 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 0.0004185/1.383, allocations: 94.5 kB / 0.7597 GB, free: 157 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0004566/1.384, allocations: 202.4 kB / 0.7599 GB, free: 157 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002295/1.384, allocations: 270.4 kB / 0.7601 GB, free: 157 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00653/1.39, allocations: 2.053 MB / 0.7621 GB, free: 156.8 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0002663/1.391, allocations: 394.5 kB / 0.7625 GB, free: 156.7 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007514/1.398, allocations: 425.1 kB / 0.7629 GB, free: 156.5 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001299/1.399, allocations: 0.5538 MB / 0.7634 GB, free: 156.4 MB / 0.545 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 923 * Number of states: 0 () * Number of discrete variables: 88 (cutForce2b.torqueArrow.twoHeadedArrow,cutForce2b.torqueArrow.headAtOrigin,cutForce2b.forceArrow.twoHeadedArrow,cutForce2b.forceArrow.headAtOrigin,cutForce1b.torqueArrow.twoHeadedArrow,cutForce1b.torqueArrow.headAtOrigin,cutForce1b.forceArrow.twoHeadedArrow,cutForce1b.forceArrow.headAtOrigin,cutForce2a.torqueArrow.twoHeadedArrow,cutForce2a.torqueArrow.headAtOrigin,cutForce2a.forceArrow.twoHeadedArrow,cutForce2a.forceArrow.headAtOrigin,cutForce1a.torqueArrow.twoHeadedArrow,cutForce1a.torqueArrow.headAtOrigin,cutForce1a.forceArrow.twoHeadedArrow,cutForce1a.forceArrow.headAtOrigin,rotate2b.color[3],rotate2b.color[2],rotate2b.color[1],body2b.sphereColor[3],body2b.sphereColor[2],body2b.sphereColor[1],translate2b.color[3],translate2b.color[2],translate2b.color[1],cutForce2b.torqueColor[3],cutForce2b.torqueColor[2],cutForce2b.torqueColor[1],cutForce2b.forceColor[3],cutForce2b.forceColor[2],cutForce2b.forceColor[1],rotate1b.color[3],rotate1b.color[2],rotate1b.color[1],body1b.sphereColor[3],body1b.sphereColor[2],body1b.sphereColor[1],translate1b.color[3],translate1b.color[2],translate1b.color[1],cutForce1b.torqueColor[3],cutForce1b.torqueColor[2],cutForce1b.torqueColor[1],cutForce1b.forceColor[3],cutForce1b.forceColor[2],cutForce1b.forceColor[1],rotate2a.color[3],rotate2a.color[2],rotate2a.color[1],rotate1a.color[3],rotate1a.color[2],rotate1a.color[1],body2a.sphereColor[3],body2a.sphereColor[2],body2a.sphereColor[1],translate2a.color[3],translate2a.color[2],translate2a.color[1],cutForce2a.torqueColor[3],cutForce2a.torqueColor[2],cutForce2a.torqueColor[1],cutForce2a.forceColor[3],cutForce2a.forceColor[2],cutForce2a.forceColor[1],body1a.sphereColor[3],body1a.sphereColor[2],body1a.sphereColor[1],translate1a.color[3],translate1a.color[2],translate1a.color[1],cutForce1a.torqueColor[3],cutForce1a.torqueColor[2],cutForce1a.torqueColor[1],cutForce1a.forceColor[3],cutForce1a.forceColor[2],cutForce1a.forceColor[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]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (1113): * Single equations (assignments): 1102 * Array equations: 11 * 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 0.006285/1.406, allocations: 3.731 MB / 0.7671 GB, free: 154.8 MB / 0.545 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001112/1.407, allocations: 0.5583 MB / 0.7676 GB, free: 154.5 MB / 0.545 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001165/1.408, allocations: 0.6864 MB / 0.7683 GB, free: 154.1 MB / 0.545 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.648e-05/1.408, allocations: 32.86 kB / 0.7683 GB, free: 154.1 MB / 0.545 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.03e-05/1.408, allocations: 0 / 0.7683 GB, free: 154.1 MB / 0.545 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.601e-05/1.408, allocations: 11.58 kB / 0.7683 GB, free: 154.1 MB / 0.545 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02567/1.434, allocations: 19.22 MB / 0.7871 GB, free: 136.8 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.462e-05/1.434, allocations: 60 kB / 0.7872 GB, free: 136.8 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001403/1.435, allocations: 0.5224 MB / 0.7877 GB, free: 136.2 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.691e-05/1.435, allocations: 72 kB / 0.7878 GB, free: 136.2 MB / 0.545 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001542/1.436, allocations: 124.8 kB / 0.7879 GB, free: 136 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 6.285e-05/1.436, allocations: 112.7 kB / 0.788 GB, free: 135.9 MB / 0.545 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.074e-05/1.436, allocations: 87.62 kB / 0.7881 GB, free: 135.8 MB / 0.545 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004454/1.44, allocations: 5.016 MB / 0.793 GB, free: 129.9 MB / 0.545 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001529/1.442, allocations: 0.6768 MB / 0.7936 GB, free: 129.2 MB / 0.545 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0006563/1.442, allocations: 132 kB / 0.7938 GB, free: 129.1 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002035/1.444, allocations: 141.6 kB / 0.7939 GB, free: 129 MB / 0.545 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003038/1.445, allocations: 370.2 kB / 0.7942 GB, free: 128.6 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001563/1.445, allocations: 156 kB / 0.7944 GB, free: 128.5 MB / 0.545 GB Notification: Performance of sorting global known variables: time 0.006259/1.451, allocations: 4.136 MB / 0.7984 GB, free: 124.3 MB / 0.545 GB Notification: Performance of sort global known variables: time 5.41e-07/1.451, allocations: 8 kB / 0.7984 GB, free: 124.3 MB / 0.545 GB Notification: Performance of remove unused functions: time 0.009657/1.461, allocations: 1.463 MB / 0.7999 GB, free: 122.9 MB / 0.545 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 256 * 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 (283): * Single equations (assignments): 280 * Array equations: 3 * 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 0.005451/1.466, allocations: 5.765 MB / 0.8055 GB, free: 116.2 MB / 0.545 GB Notification: Performance of simCode: created initialization part: time 0.008115/1.474, allocations: 6.021 MB / 0.8114 GB, free: 110.3 MB / 0.545 GB Notification: Performance of simCode: created event and clocks part: time 3.448e-05/1.475, allocations: 8 kB / 0.8114 GB, free: 110.3 MB / 0.545 GB Notification: Performance of simCode: created simulation system equations: time 0.001717/1.476, allocations: 1.399 MB / 0.8127 GB, free: 108.9 MB / 0.545 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.007375/1.484, allocations: 0.9971 MB / 0.8137 GB, free: 107.9 MB / 0.545 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1026/1.586, allocations: 87.46 MB / 0.8991 GB, free: 6.301 MB / 0.545 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.009071/1.595, allocations: 5.729 MB / 0.9047 GB, free: 0.5352 MB / 0.545 GB Notification: Performance of simCode: alias equations: time 0.007862/1.603, allocations: 2.725 MB / 0.9074 GB, free: 13.8 MB / 0.5607 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0064/1.61, allocations: 3.776 MB / 0.9111 GB, free: 10.02 MB / 0.5607 GB Notification: Performance of SimCode: time 1.122e-06/1.61, allocations: 0 / 0.9111 GB, free: 10.02 MB / 0.5607 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.3873/1.997, allocations: 106.6 MB / 1.015 GB, free: 121 MB / 0.5607 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.7/13.7, allocations: 11.25 kB / 1.015 GB, free: 121 MB / 0.5607 GB (rm -f ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque2.pipe ; mkfifo ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque2.pipe ; head -c 1048576 < ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque2.pipe >> ../files/ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque2.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque2_res.mat --tempDir=temp_ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Sensors_CutForceAndTorque2_fmu --startTime=0 --stopTime=1.1 --timeout=50 --tolerance=1e-06 ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Sensors_CutForceAndTorque2.fmu > ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque2.pipe 2>&1)