Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.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) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo) 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: translateModel(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity") translateModel(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001084/0.001084, allocations: 103.8 kB / 16.35 MB, free: 6.285 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001023/0.001023, allocations: 193.5 kB / 17.29 MB, free: 5.863 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.304/1.304, allocations: 222.9 MB / 241 MB, free: 15.17 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.793/0.793, allocations: 132.2 MB / 423.3 MB, free: 6.602 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001408/0.001408, allocations: 71.88 kB / 0.5032 GB, free: 10.96 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3278/0.3293, allocations: 80.19 MB / 0.5815 GB, free: 27.51 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity): time 0.02293/0.3522, allocations: 31.5 MB / 0.6123 GB, free: 14.63 MB / 462.1 MB Notification: Performance of NFInst.instExpressions: time 0.008471/0.3607, allocations: 5.335 MB / 0.6175 GB, free: 9.316 MB / 462.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0008525/0.3616, allocations: 35.81 kB / 0.6175 GB, free: 9.281 MB / 462.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001001/0.3626, allocations: 385.5 kB / 0.6179 GB, free: 8.902 MB / 462.1 MB Notification: Performance of NFTyping.typeBindings: time 0.00335/0.366, allocations: 1.434 MB / 0.6193 GB, free: 7.461 MB / 462.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.001967/0.368, allocations: 0.8485 MB / 0.6201 GB, free: 6.621 MB / 462.1 MB Notification: Performance of NFFlatten.flatten: time 0.002366/0.3704, allocations: 2.135 MB / 0.6222 GB, free: 4.484 MB / 462.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0007402/0.3711, allocations: 0.6116 MB / 0.6228 GB, free: 3.859 MB / 462.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.001639/0.3728, allocations: 0.8135 MB / 0.6236 GB, free: 3.051 MB / 462.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0006827/0.3735, allocations: 0.5522 MB / 0.6241 GB, free: 2.496 MB / 462.1 MB Notification: Performance of NFPackage.collectConstants: time 7.802e-05/0.3736, allocations: 56 kB / 0.6242 GB, free: 2.441 MB / 462.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002277/0.3758, allocations: 1.217 MB / 0.6253 GB, free: 1.223 MB / 462.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0001843/0.376, allocations: 171.4 kB / 0.6255 GB, free: 1.055 MB / 462.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0003884/0.3764, allocations: 394 kB / 0.6259 GB, free: 0.668 MB / 462.1 MB Notification: Performance of NFConvertDAE.convert: time 0.00213/0.3786, allocations: 1.527 MB / 0.6274 GB, free: 15.14 MB / 478.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.068e-06/0.3786, allocations: 0 / 0.6274 GB, free: 15.14 MB / 478.1 MB Notification: Performance of FrontEnd: time 2.074e-06/0.3786, allocations: 4 kB / 0.6274 GB, free: 15.14 MB / 478.1 MB Notification: Performance of Transformations before backend: time 1.564e-05/0.3786, allocations: 0 / 0.6274 GB, free: 15.14 MB / 478.1 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 0.001386/0.38, allocations: 1.082 MB / 0.6284 GB, free: 14 MB / 478.1 MB Notification: Performance of prepare preOptimizeDAE: time 2.883e-05/0.3801, allocations: 8.031 kB / 0.6284 GB, free: 14 MB / 478.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002257/0.3823, allocations: 267.8 kB / 0.6287 GB, free: 13.73 MB / 478.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001302/0.3836, allocations: 0.7171 MB / 0.6294 GB, free: 12.98 MB / 478.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.894e-05/0.3837, allocations: 37 kB / 0.6294 GB, free: 12.94 MB / 478.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 6.743e-05/0.3837, allocations: 40 kB / 0.6295 GB, free: 12.9 MB / 478.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008009/0.3846, allocations: 0.5204 MB / 0.63 GB, free: 12.34 MB / 478.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.647e-05/0.3846, allocations: 4 kB / 0.63 GB, free: 12.34 MB / 478.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.402e-05/0.3846, allocations: 20 kB / 0.63 GB, free: 12.32 MB / 478.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.08e-05/0.3846, allocations: 12 kB / 0.63 GB, free: 12.31 MB / 478.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006447/0.3853, allocations: 351.7 kB / 0.6304 GB, free: 11.96 MB / 478.1 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 0.002757/0.3881, allocations: 2.853 MB / 0.6331 GB, free: 8.875 MB / 478.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0005166/0.3886, allocations: 298 kB / 0.6334 GB, free: 8.566 MB / 478.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002435/0.3888, allocations: 147.5 kB / 0.6336 GB, free: 8.418 MB / 478.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0004398/0.3893, allocations: 0.6573 MB / 0.6342 GB, free: 7.613 MB / 478.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.656e-05/0.3893, allocations: 38.8 kB / 0.6342 GB, free: 7.566 MB / 478.1 MB Notification: Performance of pre-optimization done (n=28): time 1.563e-06/0.3893, allocations: 0 / 0.6342 GB, free: 7.566 MB / 478.1 MB Notification: Performance of matching and sorting (n=40): time 0.006161/0.3955, allocations: 2.085 MB / 0.6363 GB, free: 5.402 MB / 478.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 3.831e-05/0.3956, allocations: 85.05 kB / 0.6364 GB, free: 5.301 MB / 478.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0007089/0.3963, allocations: 0.5341 MB / 0.6369 GB, free: 4.758 MB / 478.1 MB Notification: Performance of collectPreVariables (initialization): time 4.085e-05/0.3963, allocations: 37.7 kB / 0.6369 GB, free: 4.715 MB / 478.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002073/0.3965, allocations: 328.3 kB / 0.6372 GB, free: 4.387 MB / 478.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001091/0.3967, allocations: 138 kB / 0.6374 GB, free: 4.25 MB / 478.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001337/0.3968, allocations: 90.16 kB / 0.6375 GB, free: 4.156 MB / 478.1 MB Notification: Performance of setup shared object (initialization): time 0.0001342/0.3969, allocations: 374.7 kB / 0.6378 GB, free: 3.781 MB / 478.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003388/0.3973, allocations: 175 kB / 0.638 GB, free: 3.605 MB / 478.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004177/0.3977, allocations: 291.2 kB / 0.6383 GB, free: 3.277 MB / 478.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007754/0.3985, allocations: 479.2 kB / 0.6387 GB, free: 2.766 MB / 478.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.863e-06/0.3985, allocations: 0 / 0.6387 GB, free: 2.766 MB / 478.1 MB Notification: Performance of matching and sorting (n=55) (initialization): time 0.001762/0.4003, allocations: 0.7399 MB / 0.6394 GB, free: 2.012 MB / 478.1 MB Notification: Performance of prepare postOptimizeDAE: time 2.058e-05/0.4003, allocations: 11.92 kB / 0.6394 GB, free: 2 MB / 478.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.636e-06/0.4003, allocations: 4 kB / 0.6394 GB, free: 1.996 MB / 478.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009758/0.4013, allocations: 281.7 kB / 0.6397 GB, free: 1.715 MB / 478.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000284/0.4016, allocations: 67.91 kB / 0.6398 GB, free: 1.648 MB / 478.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006138/0.4077, allocations: 4.718 MB / 0.6444 GB, free: 12.66 MB / 494.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001085/0.4089, allocations: 71.77 kB / 0.6445 GB, free: 12.59 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.244e-05/0.4089, allocations: 19.98 kB / 0.6445 GB, free: 12.57 MB / 494.1 MB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005402/0.4095, allocations: 329.4 kB / 0.6448 GB, free: 12.24 MB / 494.1 MB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004023/0.4099, allocations: 295.2 kB / 0.6451 GB, free: 11.9 MB / 494.1 MB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007503/0.4106, allocations: 475.6 kB / 0.6455 GB, free: 11.39 MB / 494.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.923e-06/0.4107, allocations: 0 / 0.6455 GB, free: 11.39 MB / 494.1 MB Notification: Performance of matching and sorting (n=55) (initialization_lambda0): time 0.001753/0.4124, allocations: 0.7359 MB / 0.6462 GB, free: 10.64 MB / 494.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.197e-05/0.4124, allocations: 8 kB / 0.6463 GB, free: 10.64 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.54e-06/0.4124, allocations: 3.984 kB / 0.6463 GB, free: 10.63 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009588/0.4134, allocations: 281.5 kB / 0.6465 GB, free: 10.35 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002655/0.4137, allocations: 63.91 kB / 0.6466 GB, free: 10.29 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006015/0.4197, allocations: 4.733 MB / 0.6512 GB, free: 5.277 MB / 494.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001131/0.4209, allocations: 67.98 kB / 0.6513 GB, free: 5.211 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.205e-05/0.4209, allocations: 20 kB / 0.6513 GB, free: 5.191 MB / 494.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 14 * 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 initialization (39): * Single equations (assignments): 37 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(2,8), (2,6)} Notification: Performance of prepare postOptimizeDAE: time 0.0002054/0.4211, allocations: 212.1 kB / 0.6515 GB, free: 4.977 MB / 494.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001459/0.4213, allocations: 59.25 kB / 0.6515 GB, free: 4.918 MB / 494.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001764/0.4231, allocations: 0.6673 MB / 0.6522 GB, free: 4.242 MB / 494.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.939e-06/0.4231, allocations: 4 kB / 0.6522 GB, free: 4.238 MB / 494.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.543e-06/0.4231, allocations: 0 / 0.6522 GB, free: 4.238 MB / 494.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001492/0.4246, allocations: 0.7492 MB / 0.6529 GB, free: 3.434 MB / 494.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00305/0.4276, allocations: 1.71 MB / 0.6546 GB, free: 1.656 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.998e-06/0.4277, allocations: 4.031 kB / 0.6546 GB, free: 1.652 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002248/0.4279, allocations: 47.97 kB / 0.6547 GB, free: 1.605 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009215/0.4288, allocations: 257.5 kB / 0.6549 GB, free: 1.348 MB / 494.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.33e-05/0.4289, allocations: 11.98 kB / 0.6549 GB, free: 1.336 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005611/0.4345, allocations: 4.311 MB / 0.6591 GB, free: 12.75 MB / 0.4981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.954e-06/0.4345, allocations: 0 / 0.6591 GB, free: 12.75 MB / 0.4981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002172/0.4367, allocations: 0.9438 MB / 0.66 GB, free: 11.77 MB / 0.4981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003918/0.4371, allocations: 184.4 kB / 0.6602 GB, free: 11.57 MB / 0.4981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.864e-05/0.4372, allocations: 8 kB / 0.6602 GB, free: 11.57 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009653/0.4382, allocations: 59.98 kB / 0.6603 GB, free: 11.51 MB / 0.4981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001123/0.4383, allocations: 27.97 kB / 0.6603 GB, free: 11.48 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.492e-05/0.4383, allocations: 15.98 kB / 0.6603 GB, free: 11.46 MB / 0.4981 GB Notification: Performance of sorting global known variables: time 0.0006175/0.439, allocations: 386.8 kB / 0.6607 GB, free: 11.09 MB / 0.4981 GB Notification: Performance of sort global known variables: time 2.5e-07/0.439, allocations: 0 / 0.6607 GB, free: 11.09 MB / 0.4981 GB Notification: Performance of remove unused functions: time 0.001551/0.4405, allocations: 415.9 kB / 0.6611 GB, free: 10.68 MB / 0.4981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 2 (vol.ports[1].h_outflow,vol1.ports[1].h_outflow) * 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 (28): * Single equations (assignments): 26 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(2,6), (2,4)} Notification: Performance of Backend phase and start with SimCode phase: time 0.000641/0.4412, allocations: 297.3 kB / 0.6614 GB, free: 10.39 MB / 0.4981 GB Notification: Performance of simCode: created initialization part: time 0.003144/0.4443, allocations: 1.375 MB / 0.6627 GB, free: 8.969 MB / 0.4981 GB Notification: Performance of simCode: created event and clocks part: time 3.646e-06/0.4443, allocations: 0 / 0.6627 GB, free: 8.969 MB / 0.4981 GB Notification: Performance of simCode: created simulation system equations: time 0.001232/0.4456, allocations: 0.5521 MB / 0.6633 GB, free: 8.391 MB / 0.4981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001529/0.4471, allocations: 349.4 kB / 0.6636 GB, free: 8.074 MB / 0.4981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00236/0.4495, allocations: 1.228 MB / 0.6648 GB, free: 6.824 MB / 0.4981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005774/0.4501, allocations: 0.9266 MB / 0.6657 GB, free: 5.871 MB / 0.4981 GB Notification: Performance of simCode: alias equations: time 0.000518/0.4506, allocations: 135.5 kB / 0.6658 GB, free: 5.738 MB / 0.4981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001468/0.4508, allocations: 51.42 kB / 0.6659 GB, free: 5.688 MB / 0.4981 GB Notification: Performance of SimCode: time 3.61e-07/0.4508, allocations: 0 / 0.6659 GB, free: 5.688 MB / 0.4981 GB Notification: Performance of Templates: time 0.03016/0.4809, allocations: 18.5 MB / 0.6839 GB, free: 3.398 MB / 0.5137 GB make -j1 -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.makefile (rm -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; mkfifo IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe >> ../files/IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.sim & ./IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity -abortSlowSimulation -alarm=480 -s gbode -lv LOG_STATS > IDEAS_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe 2>&1)