Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.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-master/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/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.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample") translateModel(IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001661/0.001661, allocations: 103.5 kB / 16.27 MB, free: 6.418 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001235/0.001235, allocations: 190.1 kB / 17.2 MB, free: 5.949 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.385/1.385, allocations: 222.9 MB / 240.9 MB, free: 15.23 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.8324/0.8324, allocations: 135.2 MB / 426.2 MB, free: 4.113 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001869/0.00187, allocations: 63.91 kB / 0.506 GB, free: 8.32 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.366/0.3679, allocations: 80.91 MB / 0.5851 GB, free: 25.3 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample): time 0.02602/0.3939, allocations: 31.28 MB / 0.6156 GB, free: 11.2 MB / 462.1 MB Notification: Performance of NFInst.instExpressions: time 0.01399/0.408, allocations: 8.516 MB / 0.6239 GB, free: 2.695 MB / 462.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001825/0.4098, allocations: 51.75 kB / 0.624 GB, free: 2.645 MB / 462.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001596/0.4115, allocations: 484.6 kB / 0.6244 GB, free: 2.168 MB / 462.1 MB Notification: Performance of NFTyping.typeBindings: time 0.004838/0.4164, allocations: 1.445 MB / 0.6258 GB, free: 0.7188 MB / 462.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003445/0.4198, allocations: 1.124 MB / 0.6269 GB, free: 15.61 MB / 478.1 MB Notification: Performance of NFFlatten.flatten: time 0.005518/0.4253, allocations: 3.676 MB / 0.6305 GB, free: 11.91 MB / 478.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.002297/0.4277, allocations: 1.486 MB / 0.632 GB, free: 10.39 MB / 478.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.003326/0.431, allocations: 1.367 MB / 0.6333 GB, free: 9.023 MB / 478.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.001941/0.433, allocations: 1.046 MB / 0.6343 GB, free: 7.973 MB / 478.1 MB Notification: Performance of NFPackage.collectConstants: time 0.000299/0.4333, allocations: 136 kB / 0.6345 GB, free: 7.84 MB / 478.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.002799/0.4361, allocations: 1.236 MB / 0.6357 GB, free: 6.602 MB / 478.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0004522/0.4366, allocations: 362.8 kB / 0.636 GB, free: 6.246 MB / 478.1 MB Notification: Performance of NFVerifyModel.verify: time 0.001187/0.4378, allocations: 0.7737 MB / 0.6368 GB, free: 5.469 MB / 478.1 MB Notification: Performance of NFConvertDAE.convert: time 0.003956/0.4417, allocations: 2.536 MB / 0.6392 GB, free: 2.926 MB / 478.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.26e-06/0.4418, allocations: 0 / 0.6392 GB, free: 2.926 MB / 478.1 MB Notification: Performance of FrontEnd: time 3.206e-06/0.4418, allocations: 4 kB / 0.6393 GB, free: 2.922 MB / 478.1 MB Notification: Performance of Transformations before backend: time 2.451e-05/0.4418, allocations: 0 / 0.6393 GB, free: 2.922 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: 212 * Number of variables: 212 Notification: Performance of Generate backend data structure: time 0.003717/0.4455, allocations: 1.915 MB / 0.6411 GB, free: 0.9492 MB / 478.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.727e-05/0.4456, allocations: 13.11 kB / 0.6411 GB, free: 0.9375 MB / 478.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0004679/0.4461, allocations: 170.6 kB / 0.6413 GB, free: 0.7695 MB / 478.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002446/0.4485, allocations: 1.335 MB / 0.6426 GB, free: 15.38 MB / 494.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.399e-05/0.4486, allocations: 66 kB / 0.6427 GB, free: 15.31 MB / 494.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001442/0.4487, allocations: 84 kB / 0.6427 GB, free: 15.23 MB / 494.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002013/0.4508, allocations: 1.186 MB / 0.6439 GB, free: 13.99 MB / 494.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.87e-05/0.4508, allocations: 4 kB / 0.6439 GB, free: 13.99 MB / 494.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.473e-05/0.4509, allocations: 32 kB / 0.6439 GB, free: 13.96 MB / 494.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.871e-05/0.451, allocations: 37.98 kB / 0.644 GB, free: 13.92 MB / 494.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001724/0.4527, allocations: 0.9132 MB / 0.6449 GB, free: 13.01 MB / 494.1 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 0.007061/0.4598, allocations: 5.245 MB / 0.65 GB, free: 7.398 MB / 494.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001618/0.4614, allocations: 0.6836 MB / 0.6507 GB, free: 6.711 MB / 494.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006306/0.462, allocations: 339.9 kB / 0.651 GB, free: 6.379 MB / 494.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.001454/0.4635, allocations: 1.413 MB / 0.6524 GB, free: 4.648 MB / 494.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0008303/0.4644, allocations: 406.9 kB / 0.6527 GB, free: 4.242 MB / 494.1 MB Notification: Performance of pre-optimization done (n=56): time 2.645e-06/0.4644, allocations: 0 / 0.6527 GB, free: 4.242 MB / 494.1 MB Notification: Performance of matching and sorting (n=56): time 0.002847/0.4672, allocations: 1.196 MB / 0.6539 GB, free: 2.996 MB / 494.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.724e-05/0.4673, allocations: 59.97 kB / 0.654 GB, free: 2.926 MB / 494.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001544/0.4688, allocations: 1.068 MB / 0.655 GB, free: 1.84 MB / 494.1 MB Notification: Performance of collectPreVariables (initialization): time 7.613e-05/0.4689, allocations: 37.7 kB / 0.6551 GB, free: 1.797 MB / 494.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0005731/0.4695, allocations: 0.5696 MB / 0.6556 GB, free: 1.219 MB / 494.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0002076/0.4697, allocations: 193.3 kB / 0.6558 GB, free: 1.027 MB / 494.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002243/0.47, allocations: 134.2 kB / 0.6559 GB, free: 0.8906 MB / 494.1 MB Notification: Performance of setup shared object (initialization): time 0.0001637/0.4701, allocations: 334 kB / 0.6562 GB, free: 0.5586 MB / 494.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006063/0.4707, allocations: 287.4 kB / 0.6565 GB, free: 280 kB / 494.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007386/0.4715, allocations: 452 kB / 0.6569 GB, free: 15.77 MB / 0.4981 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001322/0.4728, allocations: 0.7537 MB / 0.6577 GB, free: 14.95 MB / 0.4981 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.087e-05/0.4728, allocations: 4 kB / 0.6577 GB, free: 14.94 MB / 0.4981 GB Notification: Performance of matching and sorting (n=80) (initialization): time 0.001975/0.4748, allocations: 0.9577 MB / 0.6586 GB, free: 13.97 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 4.127e-05/0.4749, allocations: 29.7 kB / 0.6586 GB, free: 13.93 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.729e-06/0.4749, allocations: 4 kB / 0.6587 GB, free: 13.93 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002898/0.4752, allocations: 73.59 kB / 0.6587 GB, free: 13.85 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005757/0.4758, allocations: 152 kB / 0.6589 GB, free: 13.7 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002801/0.4786, allocations: 3.118 MB / 0.6619 GB, free: 10.3 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009871/0.4796, allocations: 95.22 kB / 0.662 GB, free: 10.2 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.659e-05/0.4797, allocations: 32 kB / 0.662 GB, free: 10.17 MB / 0.4981 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001201/0.4809, allocations: 0.6339 MB / 0.6627 GB, free: 9.535 MB / 0.4981 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0007408/0.4816, allocations: 448 kB / 0.6631 GB, free: 9.035 MB / 0.4981 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001329/0.483, allocations: 0.7538 MB / 0.6638 GB, free: 8.219 MB / 0.4981 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.837e-06/0.483, allocations: 4 kB / 0.6638 GB, free: 8.215 MB / 0.4981 GB Notification: Performance of matching and sorting (n=80) (initialization_lambda0): time 0.002042/0.485, allocations: 0.9458 MB / 0.6647 GB, free: 7.246 MB / 0.4981 GB Notification: Performance of prepare postOptimizeDAE: time 4.168e-05/0.4851, allocations: 37.69 kB / 0.6648 GB, free: 7.203 MB / 0.4981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.967e-06/0.4851, allocations: 4 kB / 0.6648 GB, free: 7.199 MB / 0.4981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002309/0.4853, allocations: 74.14 kB / 0.6649 GB, free: 7.121 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005676/0.4859, allocations: 147.7 kB / 0.665 GB, free: 6.977 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002767/0.4887, allocations: 3.109 MB / 0.668 GB, free: 3.574 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001024/0.4897, allocations: 99.58 kB / 0.6681 GB, free: 3.477 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.713e-05/0.4898, allocations: 28 kB / 0.6682 GB, free: 3.449 MB / 0.4981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 18 * Number of states: 0 () * Number of discrete variables: 5 (trapezoid.count,$PRE.trapezoid.count,trapezoid.T_start,$PRE.trapezoid.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (75): * Single equations (assignments): 72 * Array equations: 0 * Algorithm blocks: 1 * 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): 2 systems {(1,2,100.0%), (1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0003241/0.4902, allocations: 232 kB / 0.6684 GB, free: 3.215 MB / 0.4981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002303/0.4904, allocations: 110.6 kB / 0.6685 GB, free: 3.105 MB / 0.4981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002057/0.4925, allocations: 0.9571 MB / 0.6694 GB, free: 2.152 MB / 0.4981 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.373e-05/0.4925, allocations: 8 kB / 0.6694 GB, free: 2.145 MB / 0.4981 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.116e-06/0.4925, allocations: 0 / 0.6694 GB, free: 2.145 MB / 0.4981 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001434/0.4939, allocations: 0.7961 MB / 0.6702 GB, free: 1.312 MB / 0.4981 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004036/0.498, allocations: 2.131 MB / 0.6723 GB, free: 15.1 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.611e-06/0.498, allocations: 0 / 0.6723 GB, free: 15.1 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000536/0.4985, allocations: 119.8 kB / 0.6724 GB, free: 14.98 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001831/0.4987, allocations: 49.69 kB / 0.6724 GB, free: 14.93 MB / 0.5137 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.533e-05/0.4988, allocations: 19.98 kB / 0.6725 GB, free: 14.91 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002655/0.5015, allocations: 2.954 MB / 0.6753 GB, free: 11.67 MB / 0.5137 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.499e-06/0.5015, allocations: 0 / 0.6753 GB, free: 11.67 MB / 0.5137 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002683/0.5042, allocations: 1.332 MB / 0.6766 GB, free: 10.31 MB / 0.5137 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006761/0.5049, allocations: 283.5 kB / 0.6769 GB, free: 10.01 MB / 0.5137 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003086/0.5052, allocations: 15.98 kB / 0.6769 GB, free: 9.996 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009049/0.5061, allocations: 55.92 kB / 0.677 GB, free: 9.941 MB / 0.5137 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000186/0.5063, allocations: 48.5 kB / 0.677 GB, free: 9.895 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.828e-05/0.5064, allocations: 35.97 kB / 0.6771 GB, free: 9.859 MB / 0.5137 GB Notification: Performance of sorting global known variables: time 0.001619/0.508, allocations: 0.753 MB / 0.6778 GB, free: 9.098 MB / 0.5137 GB Notification: Performance of sort global known variables: time 2.51e-07/0.508, allocations: 0 / 0.6778 GB, free: 9.098 MB / 0.5137 GB Notification: Performance of remove unused functions: time 0.002851/0.5109, allocations: 0.6898 MB / 0.6785 GB, free: 8.406 MB / 0.5137 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 3 (embeddedPipe.vol[1].dynBal.U,embeddedPipe.vol[2].dynBal.U,senTem.T) * Number of discrete variables: 3 ($whenCondition1,trapezoid.T_start,trapezoid.count) * Number of discrete states: 1 (trapezoid.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (59): * Single equations (assignments): 50 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 5 * When equations: 2 * 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): 2 systems {(1,2,100.0%), (1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001324/0.5122, allocations: 403.3 kB / 0.6789 GB, free: 8.02 MB / 0.5137 GB Notification: Performance of simCode: created initialization part: time 0.003818/0.5161, allocations: 1.809 MB / 0.6806 GB, free: 6.133 MB / 0.5137 GB Notification: Performance of simCode: created event and clocks part: time 4.919e-06/0.5161, allocations: 3.938 kB / 0.6806 GB, free: 6.129 MB / 0.5137 GB Notification: Performance of simCode: created simulation system equations: time 0.001005/0.5171, allocations: 0.5951 MB / 0.6812 GB, free: 5.512 MB / 0.5137 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003092/0.5202, allocations: 0.5723 MB / 0.6818 GB, free: 4.98 MB / 0.5137 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00567/0.5259, allocations: 2.487 MB / 0.6842 GB, free: 2.449 MB / 0.5137 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001343/0.5273, allocations: 1.276 MB / 0.6854 GB, free: 1.137 MB / 0.5137 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004143/0.5277, allocations: 95.41 kB / 0.6855 GB, free: 1.043 MB / 0.5137 GB Notification: Performance of SimCode: time 9.12e-07/0.5277, allocations: 0 / 0.6855 GB, free: 1.043 MB / 0.5137 GB Notification: Performance of Templates: time 0.05475/0.5825, allocations: 34.21 MB / 0.7189 GB, free: 14.99 MB / 0.5606 GB make -j1 -f IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.makefile (rm -f IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.sim & ./IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_dev_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.pipe 2>&1)