Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness.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) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/package.mo", uses=false) Using package Annex60 with version 1.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/package.mo) 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(Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness") translateModel(Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.007472/0.007472, allocations: 98.31 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 0.001452/0.001452, allocations: 200.6 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 1.53/1.53, allocations: 205.1 MB / 222.5 MB, free: 4.531 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/package.mo): time 0.4002/0.4002, allocations: 54.94 MB / 324.8 MB, free: 44 kB / 254.1 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: Annex60 requested package Modelica of version 3.2.2. Modelica 3.2.3 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001458/0.001458, allocations: 63.95 kB / 456.2 MB, free: 38.45 MB / 382.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1177/0.1192, allocations: 59.59 MB / 0.5037 GB, free: 9.777 MB / 382.1 MB Notification: Performance of NFInst.instantiate(Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness): time 0.5146/0.6338, allocations: 199.9 MB / 0.6989 GB, free: 15.42 MB / 0.5137 GB Notification: Performance of NFInst.instExpressions: time 0.0109/0.6447, allocations: 6.725 MB / 0.7055 GB, free: 15.23 MB / 0.5137 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002271/0.6471, allocations: 39.72 kB / 0.7055 GB, free: 15.23 MB / 0.5137 GB Notification: Performance of NFTyping.typeComponents: time 0.003206/0.6503, allocations: 0.8151 MB / 0.7063 GB, free: 15.21 MB / 0.5137 GB Notification: Performance of NFTyping.typeBindings: time 0.005601/0.656, allocations: 1.726 MB / 0.708 GB, free: 15.13 MB / 0.5137 GB Notification: Performance of NFTyping.typeClassSections: time 0.00331/0.6593, allocations: 1.206 MB / 0.7092 GB, free: 14.73 MB / 0.5137 GB Notification: Performance of NFFlatten.flatten: time 0.00445/0.6638, allocations: 3.011 MB / 0.7121 GB, free: 13.26 MB / 0.5137 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001504/0.6653, allocations: 1.058 MB / 0.7132 GB, free: 12.59 MB / 0.5137 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004001/0.6693, allocations: 1.717 MB / 0.7148 GB, free: 11.65 MB / 0.5137 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001657/0.671, allocations: 0.9903 MB / 0.7158 GB, free: 11.13 MB / 0.5137 GB Notification: Performance of NFPackage.collectConstants: time 0.0001968/0.6712, allocations: 128.1 kB / 0.7159 GB, free: 11.13 MB / 0.5137 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002994/0.6742, allocations: 1.513 MB / 0.7174 GB, free: 10.43 MB / 0.5137 GB Notification: Performance of NFScalarize.scalarize: time 0.0004238/0.6746, allocations: 425.2 kB / 0.7178 GB, free: 10.12 MB / 0.5137 GB Notification: Performance of NFVerifyModel.verify: time 0.0007867/0.6754, allocations: 0.7238 MB / 0.7185 GB, free: 9.656 MB / 0.5137 GB Notification: Performance of NFConvertDAE.convert: time 0.003332/0.6788, allocations: 2.329 MB / 0.7208 GB, free: 8.207 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 4.398e-06/0.6788, allocations: 3.938 kB / 0.7208 GB, free: 8.203 MB / 0.5137 GB Notification: Performance of FrontEnd: time 1.543e-06/0.6788, allocations: 0 / 0.7208 GB, free: 8.203 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 1.778e-05/0.6788, allocations: 0 / 0.7208 GB, free: 8.203 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 233 * Number of variables: 233 Notification: Performance of Generate backend data structure: time 0.003929/0.6827, allocations: 1.867 MB / 0.7226 GB, free: 6.82 MB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 4.906e-05/0.6828, allocations: 8 kB / 0.7226 GB, free: 6.82 MB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002369/0.6852, allocations: 455 kB / 0.7231 GB, free: 6.617 MB / 0.5137 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001694/0.6869, allocations: 1.006 MB / 0.724 GB, free: 5.836 MB / 0.5137 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.641e-05/0.6869, allocations: 70.55 kB / 0.7241 GB, free: 5.805 MB / 0.5137 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001241/0.6871, allocations: 94.75 kB / 0.7242 GB, free: 5.773 MB / 0.5137 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003191/0.6903, allocations: 1.42 MB / 0.7256 GB, free: 4.91 MB / 0.5137 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.163e-05/0.6903, allocations: 0 / 0.7256 GB, free: 4.91 MB / 0.5137 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001105/0.6904, allocations: 39.31 kB / 0.7256 GB, free: 4.883 MB / 0.5137 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.243e-05/0.6905, allocations: 46.58 kB / 0.7257 GB, free: 4.871 MB / 0.5137 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003851/0.6944, allocations: 1.411 MB / 0.727 GB, free: 4.184 MB / 0.5137 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.007795/0.7022, allocations: 5.566 MB / 0.7325 GB, free: 14.47 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002764/0.705, allocations: 0.8789 MB / 0.7333 GB, free: 13.59 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001182/0.7062, allocations: 460.4 kB / 0.7338 GB, free: 13.14 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003495/0.7065, allocations: 129.5 kB / 0.7339 GB, free: 12.99 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001958/0.7085, allocations: 0.7177 MB / 0.7346 GB, free: 12.22 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=53): time 2.364e-06/0.7085, allocations: 0 / 0.7346 GB, free: 12.22 MB / 0.5294 GB Notification: Performance of matching and sorting (n=53): time 0.004808/0.7133, allocations: 1.439 MB / 0.736 GB, free: 10.78 MB / 0.5294 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0002431/0.7136, allocations: 427.6 kB / 0.7364 GB, free: 10.27 MB / 0.5294 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001488/0.7151, allocations: 1.014 MB / 0.7374 GB, free: 9.234 MB / 0.5294 GB Notification: Performance of collectPreVariables (initialization): time 8.892e-05/0.7152, allocations: 41.7 kB / 0.7374 GB, free: 9.188 MB / 0.5294 GB Notification: Performance of collectInitialEqns (initialization): time 0.000514/0.7157, allocations: 0.5463 MB / 0.738 GB, free: 8.637 MB / 0.5294 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001699/0.7159, allocations: 198.5 kB / 0.7382 GB, free: 8.445 MB / 0.5294 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000295/0.7162, allocations: 170.5 kB / 0.7383 GB, free: 8.273 MB / 0.5294 GB Notification: Performance of setup shared object (initialization): time 0.0001495/0.7163, allocations: 337.9 kB / 0.7386 GB, free: 7.938 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001317/0.7176, allocations: 468.5 kB / 0.7391 GB, free: 7.477 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001564/0.7192, allocations: 0.7275 MB / 0.7398 GB, free: 6.637 MB / 0.5294 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002766/0.722, allocations: 1.045 MB / 0.7408 GB, free: 5.52 MB / 0.5294 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.988e-06/0.722, allocations: 0 / 0.7408 GB, free: 5.52 MB / 0.5294 GB Notification: Performance of matching and sorting (n=89) (initialization): time 0.003356/0.7254, allocations: 1.253 MB / 0.742 GB, free: 4.25 MB / 0.5294 GB Notification: Performance of prepare postOptimizeDAE: time 5.61e-05/0.7254, allocations: 37.64 kB / 0.7421 GB, free: 4.207 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.107e-05/0.7255, allocations: 4 kB / 0.7421 GB, free: 4.203 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.696e-05/0.7255, allocations: 11.94 kB / 0.7421 GB, free: 4.191 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003402/0.7289, allocations: 0.5347 MB / 0.7426 GB, free: 3.656 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004887/0.7338, allocations: 3.415 MB / 0.746 GB, free: 15.97 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001666/0.7355, allocations: 195.1 kB / 0.7461 GB, free: 15.78 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001013/0.7356, allocations: 35.98 kB / 0.7462 GB, free: 15.74 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00167/0.7373, allocations: 0.6502 MB / 0.7468 GB, free: 15.09 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001547/0.7389, allocations: 0.7079 MB / 0.7475 GB, free: 14.27 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002487/0.7413, allocations: 0.9938 MB / 0.7485 GB, free: 13.21 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.637e-06/0.7414, allocations: 0 / 0.7485 GB, free: 13.21 MB / 0.545 GB Notification: Performance of matching and sorting (n=89) (initialization_lambda0): time 0.003302/0.7447, allocations: 1.199 MB / 0.7496 GB, free: 12 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 3.906e-05/0.7447, allocations: 33.7 kB / 0.7497 GB, free: 11.96 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.044e-05/0.7447, allocations: 8.344 kB / 0.7497 GB, free: 11.95 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.068e-05/0.7448, allocations: 12 kB / 0.7497 GB, free: 11.94 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00111/0.7459, allocations: 227.7 kB / 0.7499 GB, free: 11.71 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.471e-05/0.7459, allocations: 12.8 kB / 0.7499 GB, free: 11.7 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001505/0.7474, allocations: 143.5 kB / 0.7501 GB, free: 11.56 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.404e-05/0.7475, allocations: 35.98 kB / 0.7501 GB, free: 11.53 MB / 0.545 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 21 * 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 (88): * Single equations (assignments): 85 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0003702/0.7479, allocations: 243.9 kB / 0.7503 GB, free: 11.28 MB / 0.545 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002218/0.7481, allocations: 119.2 kB / 0.7504 GB, free: 11.16 MB / 0.545 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003123/0.7512, allocations: 1.054 MB / 0.7515 GB, free: 10.1 MB / 0.545 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.126e-05/0.7513, allocations: 8 kB / 0.7515 GB, free: 10.09 MB / 0.545 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.875e-06/0.7513, allocations: 3.938 kB / 0.7515 GB, free: 10.09 MB / 0.545 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.008e-05/0.7513, allocations: 11.92 kB / 0.7515 GB, free: 10.08 MB / 0.545 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004403/0.7557, allocations: 2.222 MB / 0.7537 GB, free: 7.797 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.829e-06/0.7557, allocations: 0 / 0.7537 GB, free: 7.797 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002887/0.7586, allocations: 483.4 kB / 0.7541 GB, free: 7.324 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (simulation): time 7.254e-06/0.7586, allocations: 4 kB / 0.7541 GB, free: 7.32 MB / 0.545 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001123/0.7587, allocations: 19.98 kB / 0.7541 GB, free: 7.301 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004474/0.7632, allocations: 3.356 MB / 0.7574 GB, free: 3.672 MB / 0.545 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.043e-06/0.7632, allocations: 0 / 0.7574 GB, free: 3.672 MB / 0.545 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003354/0.7666, allocations: 1.146 MB / 0.7585 GB, free: 2.492 MB / 0.545 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006285/0.7672, allocations: 308.1 kB / 0.7588 GB, free: 2.172 MB / 0.545 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001614/0.7674, allocations: 12 kB / 0.7588 GB, free: 2.16 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001176/0.7686, allocations: 115.9 kB / 0.759 GB, free: 2.047 MB / 0.545 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000165/0.7688, allocations: 48.38 kB / 0.759 GB, free: 2 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.019e-05/0.7688, allocations: 27.97 kB / 0.759 GB, free: 1.973 MB / 0.545 GB Notification: Performance of sorting global known variables: time 0.0009737/0.7698, allocations: 0.6949 MB / 0.7597 GB, free: 1.27 MB / 0.545 GB Notification: Performance of sort global known variables: time 2.21e-07/0.7698, allocations: 0 / 0.7597 GB, free: 1.27 MB / 0.545 GB Notification: Performance of remove unused functions: time 0.001612/0.7715, allocations: 0.5773 MB / 0.7603 GB, free: 0.6914 MB / 0.545 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 6 * Number of states: 0 () * 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 (57): * Single equations (assignments): 53 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0005348/0.772, allocations: 235.5 kB / 0.7605 GB, free: 480 kB / 0.545 GB Notification: Performance of simCode: created initialization part: time 0.007182/0.7792, allocations: 2.037 MB / 0.7625 GB, free: 14.41 MB / 0.5606 GB Notification: Performance of simCode: created event and clocks part: time 8.797e-06/0.7792, allocations: 4 kB / 0.7625 GB, free: 14.41 MB / 0.5606 GB Notification: Performance of simCode: created simulation system equations: time 0.005651/0.7849, allocations: 1.09 MB / 0.7636 GB, free: 13.32 MB / 0.5606 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002605/0.7875, allocations: 0.5133 MB / 0.7641 GB, free: 12.81 MB / 0.5606 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00452/0.7921, allocations: 1.985 MB / 0.766 GB, free: 10.77 MB / 0.5606 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007041/0.7928, allocations: 1.082 MB / 0.7671 GB, free: 9.656 MB / 0.5606 GB Notification: Performance of simCode: alias equations: time 0.001322/0.7941, allocations: 299.1 kB / 0.7673 GB, free: 9.363 MB / 0.5606 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002868/0.7944, allocations: 95.41 kB / 0.7674 GB, free: 9.27 MB / 0.5606 GB Notification: Performance of SimCode: time 8.51e-07/0.7944, allocations: 3.938 kB / 0.7674 GB, free: 9.266 MB / 0.5606 GB Notification: Performance of Templates: time 0.0376/0.832, allocations: 22.66 MB / 0.7896 GB, free: 2.754 MB / 0.5762 GB make -j1 -f Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness.makefile (rm -f Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness.pipe ; mkfifo Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness.pipe ; head -c 1048576 < Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness.pipe >> ../files/Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness.sim & ./Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness -abortSlowSimulation -alarm=480 -lv LOG_STATS > Annex60_1.0.0_Annex60.Fluid.HeatExchangers.Validation.ConstantEffectiveness.pipe 2>&1)