Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.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.Validation.DryCoilEffectivenessNTU,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU") translateModel(IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001618/0.001618, allocations: 104.2 kB / 15.99 MB, free: 6.355 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001558/0.001559, allocations: 195.9 kB / 16.91 MB, free: 6.188 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.334/1.334, allocations: 222.9 MB / 240.6 MB, free: 13.73 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.8102/0.8102, allocations: 135.2 MB / 425.9 MB, free: 4.293 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001841/0.001841, allocations: 67.89 kB / 0.5055 GB, free: 8.695 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3136/0.3155, allocations: 80.92 MB / 0.5846 GB, free: 25.16 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU): time 0.6397/0.9551, allocations: 351.6 MB / 0.9279 GB, free: 14.49 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.04589/1.001, allocations: 31.74 MB / 0.9589 GB, free: 14.67 MB / 0.6856 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.006171/1.007, allocations: 155 kB / 0.959 GB, free: 14.52 MB / 0.6856 GB Notification: Performance of NFTyping.typeComponents: time 0.007895/1.015, allocations: 2.527 MB / 0.9615 GB, free: 11.98 MB / 0.6856 GB Notification: Performance of NFTyping.typeBindings: time 0.0208/1.036, allocations: 7.607 MB / 0.9689 GB, free: 4.348 MB / 0.6856 GB Notification: Performance of NFTyping.typeClassSections: time 0.009791/1.046, allocations: 3.812 MB / 0.9726 GB, free: 0.6133 MB / 0.6856 GB Notification: Performance of NFFlatten.flatten: time 0.01777/1.064, allocations: 12.58 MB / 0.9849 GB, free: 3.984 MB / 0.7012 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00749/1.071, allocations: 4.555 MB / 0.9894 GB, free: 15.35 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01849/1.09, allocations: 7.383 MB / 0.9966 GB, free: 7.957 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.008816/1.099, allocations: 4.133 MB / 1.001 GB, free: 3.824 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 0.001879/1.1, allocations: 0.5156 MB / 1.001 GB, free: 3.309 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01321/1.114, allocations: 5.827 MB / 1.007 GB, free: 13.47 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.002901/1.117, allocations: 1.518 MB / 1.008 GB, free: 11.95 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.006248/1.123, allocations: 2.978 MB / 1.011 GB, free: 8.953 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.01141/1.134, allocations: 6.806 MB / 1.018 GB, free: 2.133 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 6.132e-06/1.134, allocations: 0 / 1.018 GB, free: 2.133 MB / 0.7325 GB Notification: Performance of FrontEnd: time 4.579e-06/1.134, allocations: 4 kB / 1.018 GB, free: 2.129 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 0.0002054/1.135, allocations: 3.938 kB / 1.018 GB, free: 2.125 MB / 0.7325 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 822 * Number of variables: 822 Notification: Performance of Generate backend data structure: time 0.0174/1.152, allocations: 6.305 MB / 1.024 GB, free: 11.73 MB / 0.7481 GB Notification: Performance of prepare preOptimizeDAE: time 4.276e-05/1.152, allocations: 9.109 kB / 1.024 GB, free: 11.72 MB / 0.7481 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01145/1.164, allocations: 2.011 MB / 1.026 GB, free: 9.703 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.008751/1.172, allocations: 3.724 MB / 1.03 GB, free: 5.922 MB / 0.7481 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.003131/1.175, allocations: 0.8193 MB / 1.03 GB, free: 5.102 MB / 0.7481 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001168/1.177, allocations: 363.9 kB / 1.031 GB, free: 4.746 MB / 0.7481 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.2491/1.426, allocations: 4.785 MB / 1.035 GB, free: 322.5 MB / 0.7481 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001073/1.426, allocations: 5.672 kB / 1.035 GB, free: 322.5 MB / 0.7481 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0008066/1.427, allocations: 132.3 kB / 1.036 GB, free: 322.5 MB / 0.7481 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002267/1.427, allocations: 147.6 kB / 1.036 GB, free: 322.5 MB / 0.7481 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01609/1.443, allocations: 5.378 MB / 1.041 GB, free: 321.2 MB / 0.7481 GB 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 0.02941/1.472, allocations: 19.57 MB / 1.06 GB, free: 307.1 MB / 0.7481 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00897/1.481, allocations: 3.868 MB / 1.064 GB, free: 305.4 MB / 0.7481 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.00419/1.486, allocations: 2.041 MB / 1.066 GB, free: 304.5 MB / 0.7481 GB Notification: Performance of preOpt evalFunc (simulation): time 0.000717/1.486, allocations: 0.6831 MB / 1.067 GB, free: 303.8 MB / 0.7481 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.004996/1.491, allocations: 2.308 MB / 1.069 GB, free: 302.6 MB / 0.7481 GB Notification: Performance of pre-optimization done (n=251): time 4.378e-06/1.491, allocations: 2.438 kB / 1.069 GB, free: 302.6 MB / 0.7481 GB Notification: Performance of matching and sorting (n=251): time 0.0144/1.506, allocations: 5.8 MB / 1.074 GB, free: 299.2 MB / 0.7481 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.854e-05/1.506, allocations: 103.1 kB / 1.075 GB, free: 299.1 MB / 0.7481 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004298/1.51, allocations: 3.648 MB / 1.078 GB, free: 295.4 MB / 0.7481 GB Notification: Performance of collectPreVariables (initialization): time 0.0007366/1.511, allocations: 89.7 kB / 1.078 GB, free: 295.3 MB / 0.7481 GB Notification: Performance of collectInitialEqns (initialization): time 0.001165/1.512, allocations: 1.841 MB / 1.08 GB, free: 293.5 MB / 0.7481 GB Notification: Performance of collectInitialBindings (initialization): time 0.0008282/1.513, allocations: 0.8301 MB / 1.081 GB, free: 292.7 MB / 0.7481 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001137/1.514, allocations: 0.7023 MB / 1.081 GB, free: 292 MB / 0.7481 GB Notification: Performance of setup shared object (initialization): time 3.888e-05/1.514, allocations: 305 kB / 1.082 GB, free: 291.7 MB / 0.7481 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004468/1.519, allocations: 1.943 MB / 1.084 GB, free: 289.8 MB / 0.7481 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005237/1.524, allocations: 2.733 MB / 1.086 GB, free: 286.7 MB / 0.7481 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.009227/1.533, allocations: 4.146 MB / 1.09 GB, free: 282.4 MB / 0.7481 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.776e-05/1.533, allocations: 4 kB / 1.09 GB, free: 282.4 MB / 0.7481 GB Notification: Performance of matching and sorting (n=404) (initialization): time 0.01233/1.546, allocations: 5.058 MB / 1.095 GB, free: 277.3 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 5.285e-05/1.546, allocations: 37.69 kB / 1.095 GB, free: 277.3 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.305e-05/1.546, allocations: 12.78 kB / 1.095 GB, free: 277.3 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.401e-05/1.546, allocations: 28 kB / 1.095 GB, free: 277.2 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.006168/1.552, allocations: 1.204 MB / 1.097 GB, free: 276 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001978/1.554, allocations: 5.963 MB / 1.102 GB, free: 269.8 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006056/1.56, allocations: 0.8091 MB / 1.103 GB, free: 269 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007207/1.561, allocations: 159.9 kB / 1.103 GB, free: 268.9 MB / 0.7481 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00588/1.567, allocations: 2.606 MB / 1.106 GB, free: 266.3 MB / 0.7481 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.00517/1.572, allocations: 2.714 MB / 1.109 GB, free: 263.3 MB / 0.7481 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.009693/1.582, allocations: 4.097 MB / 1.113 GB, free: 259 MB / 0.7481 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.599e-05/1.582, allocations: 8 kB / 1.113 GB, free: 259 MB / 0.7481 GB Notification: Performance of matching and sorting (n=404) (initialization_lambda0): time 0.01208/1.594, allocations: 5.014 MB / 1.117 GB, free: 253.9 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 4.254e-05/1.594, allocations: 45.69 kB / 1.118 GB, free: 253.9 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.656e-05/1.594, allocations: 19.88 kB / 1.118 GB, free: 253.8 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.032e-05/1.594, allocations: 28 kB / 1.118 GB, free: 253.8 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004749/1.599, allocations: 1.05 MB / 1.119 GB, free: 252.8 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.486e-05/1.599, allocations: 36.48 kB / 1.119 GB, free: 252.7 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005536/1.604, allocations: 0.7226 MB / 1.119 GB, free: 252 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006613/1.605, allocations: 155.9 kB / 1.119 GB, free: 251.9 MB / 0.7481 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 52 * Number of states: 0 () * Number of discrete variables: 15 (hexCroUnm.flowRegime,hexCroUnm.flowRegime_nominal,hexCroC1Unm.flowRegime_nominal,hexCroC1Mix.flowRegime_nominal,hexCou.flowRegime_nominal,hexPar.flowRegime_nominal,trapezoid.count,$PRE.trapezoid.count,trapezoid.T_start,$PRE.trapezoid.T_start,hexCroC1Unm.flowRegime,hexCroC1Mix.flowRegime,hexCou.flowRegime,hexPar.flowRegime,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (403): * Single equations (assignments): 392 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 10 * 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): 10 systems {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0009477/1.606, allocations: 377.3 kB / 1.12 GB, free: 251.5 MB / 0.7481 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.00127/1.607, allocations: 442.5 kB / 1.12 GB, free: 251 MB / 0.7481 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0112/1.618, allocations: 4.664 MB / 1.125 GB, free: 246.3 MB / 0.7481 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.391e-05/1.618, allocations: 28 kB / 1.125 GB, free: 246.3 MB / 0.7481 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.468e-06/1.618, allocations: 0 / 1.125 GB, free: 246.3 MB / 0.7481 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.469e-05/1.618, allocations: 15.94 kB / 1.125 GB, free: 246.3 MB / 0.7481 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01715/1.636, allocations: 9.06 MB / 1.134 GB, free: 237.1 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.266e-05/1.636, allocations: 4 kB / 1.134 GB, free: 237.1 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003955/1.64, allocations: 0.8391 MB / 1.135 GB, free: 236.3 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.82e-05/1.64, allocations: 12 kB / 1.135 GB, free: 236.3 MB / 0.7481 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0003276/1.64, allocations: 91.92 kB / 1.135 GB, free: 236.2 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001576/1.642, allocations: 5.931 MB / 1.14 GB, free: 230 MB / 0.7481 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.228e-06/1.642, allocations: 7.75 kB / 1.14 GB, free: 230 MB / 0.7481 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01071/1.652, allocations: 4.58 MB / 1.145 GB, free: 225.3 MB / 0.7481 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002384/1.655, allocations: 0.9711 MB / 1.146 GB, free: 224.3 MB / 0.7481 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0008762/1.656, allocations: 51.94 kB / 1.146 GB, free: 224.2 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004831/1.66, allocations: 0.5499 MB / 1.146 GB, free: 223.7 MB / 0.7481 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0005195/1.661, allocations: 195.4 kB / 1.147 GB, free: 223.5 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000376/1.661, allocations: 135.8 kB / 1.147 GB, free: 223.4 MB / 0.7481 GB Notification: Performance of sorting global known variables: time 0.003394/1.665, allocations: 2.404 MB / 1.149 GB, free: 221 MB / 0.7481 GB Notification: Performance of sort global known variables: time 3.21e-07/1.665, allocations: 0 / 1.149 GB, free: 221 MB / 0.7481 GB Notification: Performance of remove unused functions: time 0.006184/1.671, allocations: 2.293 MB / 1.151 GB, free: 218.7 MB / 0.7481 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 20 * Number of states: 0 () * Number of discrete variables: 7 ($whenCondition1,hexPar.flowRegime,hexCou.flowRegime,hexCroC1Mix.flowRegime,hexCroC1Unm.flowRegime,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 (283): * Single equations (assignments): 269 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 10 * 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): 10 systems {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001493/1.673, allocations: 0.697 MB / 1.152 GB, free: 218.1 MB / 0.7481 GB Notification: Performance of simCode: created initialization part: time 0.02282/1.695, allocations: 7.882 MB / 1.16 GB, free: 210.2 MB / 0.7481 GB Notification: Performance of simCode: created event and clocks part: time 1.257e-05/1.695, allocations: 0 / 1.16 GB, free: 210.2 MB / 0.7481 GB Notification: Performance of simCode: created simulation system equations: time 0.005426/1.701, allocations: 2.301 MB / 1.162 GB, free: 207.9 MB / 0.7481 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.008346/1.709, allocations: 1.957 MB / 1.164 GB, free: 206 MB / 0.7481 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01537/1.725, allocations: 9.958 MB / 1.174 GB, free: 196 MB / 0.7481 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001479/1.726, allocations: 2.383 MB / 1.176 GB, free: 193.5 MB / 0.7481 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.002033/1.728, allocations: 423.2 kB / 1.176 GB, free: 193.1 MB / 0.7481 GB Notification: Performance of SimCode: time 1.383e-06/1.728, allocations: 0 / 1.176 GB, free: 193.1 MB / 0.7481 GB Notification: Performance of Templates: time 0.4281/2.156, allocations: 270.2 MB / 1.44 GB, free: 254.8 MB / 0.7481 GB make -j1 -f IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.makefile (rm -f IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.sim & ./IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_dev_IDEAS.Fluid.HeatExchangers.Validation.DryCoilEffectivenessNTU.pipe 2>&1)