Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries.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/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false)
Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/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(Buildings.Fluid.Movers.Examples.PumpsSeries,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries")
translateModel(Buildings.Fluid.Movers.Examples.PumpsSeries,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001439/0.001439, allocations: 106.7 kB / 16.37 MB, free: 6.008 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001616/0.001616, allocations: 190 kB / 17.31 MB, free: 5.621 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.434/1.434, allocations: 205.1 MB / 223.2 MB, free: 12.26 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.801/1.801, allocations: 292.3 MB / 0.5496 GB, free: 17.5 MB / 462.1 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: Performance of FrontEnd - loaded program: time 0.001412/0.001412, allocations: 67.91 kB / 0.6729 GB, free: 5.844 MB / 0.545 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2568/0.2583, allocations: 114.6 MB / 0.7848 GB, free: 3.168 MB / 0.6544 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Examples.PumpsSeries): time 0.4894/0.7477, allocations: 50.86 MB / 0.8345 GB, free: 16.32 MB / 0.6544 GB
Notification: Performance of NFInst.instExpressions: time 0.03807/0.7858, allocations: 18.86 MB / 0.8529 GB, free: 3.234 MB / 0.6544 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.005018/0.7909, allocations: 78.19 kB / 0.8529 GB, free: 3.203 MB / 0.6544 GB
Notification: Performance of NFTyping.typeComponents: time 0.005589/0.7965, allocations: 1.149 MB / 0.8541 GB, free: 2.531 MB / 0.6544 GB
Notification: Performance of NFTyping.typeBindings: time 0.01285/0.8095, allocations: 2.404 MB / 0.8564 GB, free: 1.152 MB / 0.6544 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0119/0.8214, allocations: 3.566 MB / 0.8599 GB, free: 15.57 MB / 0.67 GB
Notification: Performance of NFFlatten.flatten: time 0.008996/0.8304, allocations: 4.477 MB / 0.8643 GB, free: 13.45 MB / 0.67 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.003476/0.8339, allocations: 1.683 MB / 0.8659 GB, free: 12.69 MB / 0.67 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.005822/0.8398, allocations: 1.833 MB / 0.8677 GB, free: 11.65 MB / 0.67 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.003339/0.8431, allocations: 1.347 MB / 0.869 GB, free: 10.8 MB / 0.67 GB
Notification: Performance of NFPackage.collectConstants: time 0.0005461/0.8437, allocations: 188 kB / 0.8692 GB, free: 10.8 MB / 0.67 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.004832/0.8485, allocations: 1.701 MB / 0.8709 GB, free: 9.902 MB / 0.67 GB
Notification: Performance of NFScalarize.scalarize: time 0.0009094/0.8495, allocations: 0.6129 MB / 0.8715 GB, free: 9.449 MB / 0.67 GB
Notification: Performance of NFVerifyModel.verify: time 0.001827/0.8513, allocations: 1.049 MB / 0.8725 GB, free: 8.715 MB / 0.67 GB
Notification: Performance of NFConvertDAE.convert: time 0.006938/0.8582, allocations: 3.571 MB / 0.876 GB, free: 6.293 MB / 0.67 GB
Notification: Performance of FrontEnd - DAE generated: time 5.09e-06/0.8583, allocations: 0 / 0.876 GB, free: 6.293 MB / 0.67 GB
Notification: Performance of FrontEnd: time 2.555e-06/0.8583, allocations: 1.719 kB / 0.876 GB, free: 6.293 MB / 0.67 GB
Notification: Performance of Transformations before backend: time 6.798e-05/0.8584, allocations: 1.125 kB / 0.876 GB, free: 6.293 MB / 0.67 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 251
 * Number of variables: 251
Notification: Performance of Generate backend data structure: time 0.005764/0.8642, allocations: 2.456 MB / 0.8784 GB, free: 4.465 MB / 0.67 GB
Notification: Performance of prepare preOptimizeDAE: time 4.391e-05/0.8642, allocations: 9.375 kB / 0.8784 GB, free: 4.465 MB / 0.67 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003302/0.8675, allocations: 0.5654 MB / 0.8789 GB, free: 4.199 MB / 0.67 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.004662/0.8722, allocations: 1.864 MB / 0.8807 GB, free: 2.816 MB / 0.67 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000113/0.8723, allocations: 84.62 kB / 0.8808 GB, free: 2.777 MB / 0.67 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.000245/0.8726, allocations: 119.2 kB / 0.8809 GB, free: 2.734 MB / 0.67 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.002849/0.8755, allocations: 1.281 MB / 0.8822 GB, free: 1.902 MB / 0.67 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.399e-05/0.8755, allocations: 9.375 kB / 0.8822 GB, free: 1.895 MB / 0.67 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001045/0.8756, allocations: 42.12 kB / 0.8822 GB, free: 1.863 MB / 0.67 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.705e-05/0.8756, allocations: 25.22 kB / 0.8823 GB, free: 1.863 MB / 0.67 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002439/0.8781, allocations: 0.9399 MB / 0.8832 GB, free: 1.398 MB / 0.67 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 0.009577/0.8877, allocations: 5.816 MB / 0.8889 GB, free: 12.31 MB / 0.6856 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.002342/0.89, allocations: 0.8238 MB / 0.8897 GB, free: 11.82 MB / 0.6856 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0008527/0.8909, allocations: 349.3 kB / 0.89 GB, free: 11.65 MB / 0.6856 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.003745/0.8947, allocations: 2.146 MB / 0.8921 GB, free: 9.629 MB / 0.6856 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.701e-05/0.8947, allocations: 38.47 kB / 0.8921 GB, free: 9.586 MB / 0.6856 GB
Notification: Performance of pre-optimization done (n=56): time 2.174e-06/0.8948, allocations: 0 / 0.8921 GB, free: 9.586 MB / 0.6856 GB
Notification: Performance of matching and sorting (n=56): time 0.003884/0.8986, allocations: 1.255 MB / 0.8934 GB, free: 8.895 MB / 0.6856 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001113/0.8988, allocations: 212.6 kB / 0.8936 GB, free: 8.641 MB / 0.6856 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002132/0.9009, allocations: 1.551 MB / 0.8951 GB, free: 7.812 MB / 0.6856 GB
Notification: Performance of collectPreVariables (initialization): time 0.0001025/0.901, allocations: 42.95 kB / 0.8951 GB, free: 7.77 MB / 0.6856 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0007134/0.9017, allocations: 0.8058 MB / 0.8959 GB, free: 7.059 MB / 0.6856 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0002084/0.902, allocations: 205.9 kB / 0.8961 GB, free: 6.879 MB / 0.6856 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003632/0.9023, allocations: 224.9 kB / 0.8963 GB, free: 6.75 MB / 0.6856 GB
Notification: Performance of setup shared object (initialization): time 0.000149/0.9025, allocations: 346.4 kB / 0.8966 GB, free: 6.414 MB / 0.6856 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009904/0.9035, allocations: 456.4 kB / 0.8971 GB, free: 6.195 MB / 0.6856 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.001317/0.9048, allocations: 0.784 MB / 0.8978 GB, free: 5.539 MB / 0.6856 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.002189/0.907, allocations: 1.156 MB / 0.899 GB, free: 4.41 MB / 0.6856 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.953e-06/0.907, allocations: 4 kB / 0.899 GB, free: 4.406 MB / 0.6856 GB
Notification: Performance of matching and sorting (n=115) (initialization): time 0.003223/0.9103, allocations: 1.453 MB / 0.9004 GB, free: 2.941 MB / 0.6856 GB
Notification: Performance of prepare postOptimizeDAE: time 2.523e-05/0.9103, allocations: 8.438 kB / 0.9004 GB, free: 2.934 MB / 0.6856 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.516e-05/0.9103, allocations: 8 kB / 0.9004 GB, free: 2.926 MB / 0.6856 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0005187/0.9109, allocations: 153.8 kB / 0.9006 GB, free: 2.773 MB / 0.6856 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008839/0.9118, allocations: 211.7 kB / 0.9008 GB, free: 2.566 MB / 0.6856 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006348/0.9124, allocations: 0.6732 MB / 0.9014 GB, free: 1.867 MB / 0.6856 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001353/0.9138, allocations: 122.5 kB / 0.9015 GB, free: 1.75 MB / 0.6856 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001209/0.9139, allocations: 59.97 kB / 0.9016 GB, free: 1.691 MB / 0.6856 GB
Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001463/0.9154, allocations: 0.7245 MB / 0.9023 GB, free: 0.9648 MB / 0.6856 GB
Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001061/0.9164, allocations: 0.7247 MB / 0.903 GB, free: 96 kB / 0.6856 GB
Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001713/0.9182, allocations: 1.035 MB / 0.904 GB, free: 14.94 MB / 0.7012 GB
Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.43e-06/0.9182, allocations: 4 kB / 0.904 GB, free: 14.94 MB / 0.7012 GB
Notification: Performance of matching and sorting (n=115) (initialization_lambda0): time 0.003028/0.9212, allocations: 1.344 MB / 0.9053 GB, free: 13.58 MB / 0.7012 GB
Notification: Performance of prepare postOptimizeDAE: time 1.821e-05/0.9212, allocations: 9.25 kB / 0.9053 GB, free: 13.57 MB / 0.7012 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.934e-05/0.9213, allocations: 8 kB / 0.9054 GB, free: 13.57 MB / 0.7012 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0009028/0.9222, allocations: 212.8 kB / 0.9056 GB, free: 13.36 MB / 0.7012 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007686/0.923, allocations: 203.7 kB / 0.9058 GB, free: 13.16 MB / 0.7012 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0059/0.9289, allocations: 3.502 MB / 0.9092 GB, free: 9.457 MB / 0.7012 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001346/0.9302, allocations: 90.22 kB / 0.9093 GB, free: 9.371 MB / 0.7012 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000177/0.9304, allocations: 59.97 kB / 0.9093 GB, free: 9.312 MB / 0.7012 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 37
 * 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 (104):
 * Single equations (assignments): 97
 * Array equations: 4
 * Algorithm blocks: 0
 * Record equations: 2
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 1
 * 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): 1 system
   {(1,5)}
Notification: Performance of prepare postOptimizeDAE: time 0.0003808/0.9308, allocations: 236 kB / 0.9095 GB, free: 9.074 MB / 0.7012 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005129/0.9313, allocations: 169.9 kB / 0.9097 GB, free: 8.906 MB / 0.7012 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00318/0.9345, allocations: 1.205 MB / 0.9109 GB, free: 7.703 MB / 0.7012 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.007e-05/0.9346, allocations: 15.94 kB / 0.9109 GB, free: 7.688 MB / 0.7012 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 4.098e-06/0.9346, allocations: 0 / 0.9109 GB, free: 7.688 MB / 0.7012 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.12e-05/0.9346, allocations: 3.984 kB / 0.9109 GB, free: 7.684 MB / 0.7012 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005477/0.9401, allocations: 2.376 MB / 0.9132 GB, free: 5.234 MB / 0.7012 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.155e-06/0.9401, allocations: 0 / 0.9132 GB, free: 5.234 MB / 0.7012 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006691/0.9408, allocations: 131.7 kB / 0.9133 GB, free: 5.105 MB / 0.7012 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0003387/0.9411, allocations: 104 kB / 0.9134 GB, free: 5.004 MB / 0.7012 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.542e-05/0.9412, allocations: 27.97 kB / 0.9135 GB, free: 4.977 MB / 0.7012 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0004548/0.9417, allocations: 0.6394 MB / 0.9141 GB, free: 4.312 MB / 0.7012 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.191e-06/0.9417, allocations: 11.91 kB / 0.9141 GB, free: 4.301 MB / 0.7012 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003502/0.9452, allocations: 1.578 MB / 0.9156 GB, free: 2.691 MB / 0.7012 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0008955/0.9461, allocations: 330.7 kB / 0.916 GB, free: 2.348 MB / 0.7012 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004686/0.9466, allocations: 19.98 kB / 0.916 GB, free: 2.328 MB / 0.7012 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001064/0.9477, allocations: 39.97 kB / 0.916 GB, free: 2.289 MB / 0.7012 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.00011/0.9478, allocations: 53.69 kB / 0.9161 GB, free: 2.238 MB / 0.7012 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.777e-05/0.9479, allocations: 35.97 kB / 0.9161 GB, free: 2.203 MB / 0.7012 GB
Notification: Performance of sorting global known variables: time 0.002005/0.9499, allocations: 1.049 MB / 0.9171 GB, free: 1.164 MB / 0.7012 GB
Notification: Performance of sort global known variables: time 1.2e-07/0.9499, allocations: 0 / 0.9171 GB, free: 1.164 MB / 0.7012 GB
Notification: Performance of remove unused functions: time 0.003747/0.9536, allocations: 0.9355 MB / 0.918 GB, free: 232 kB / 0.7012 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 5
 * Number of states: 4 (floMac1.filter.x[1],floMac1.filter.x[2],floMac2.filter.x[1],floMac2.filter.x[2])
 * 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 (63):
 * Single equations (assignments): 56
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 6
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 1
 * 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): 1 system
   {(1,7)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.001917/0.9556, allocations: 0.5756 MB / 0.9186 GB, free: 15.65 MB / 0.7169 GB
Notification: Performance of simCode: created initialization part: time 0.004399/0.96, allocations: 1.848 MB / 0.9204 GB, free: 13.77 MB / 0.7169 GB
Notification: Performance of simCode: created event and clocks part: time 6.482e-06/0.96, allocations: 0 / 0.9204 GB, free: 13.77 MB / 0.7169 GB
Notification: Performance of simCode: created simulation system equations: time 0.001084/0.9611, allocations: 436.2 kB / 0.9208 GB, free: 13.34 MB / 0.7169 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004166/0.9653, allocations: 0.7875 MB / 0.9216 GB, free: 12.64 MB / 0.7169 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006153/0.9715, allocations: 2.922 MB / 0.9244 GB, free: 9.664 MB / 0.7169 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001362/0.9729, allocations: 1.38 MB / 0.9258 GB, free: 8.254 MB / 0.7169 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005149/0.9734, allocations: 147.4 kB / 0.9259 GB, free: 8.109 MB / 0.7169 GB
Notification: Performance of SimCode: time 1.152e-06/0.9734, allocations: 3.938 kB / 0.9259 GB, free: 8.105 MB / 0.7169 GB
Notification: Performance of Templates: time 0.05761/1.031, allocations: 39.57 MB / 0.9646 GB, free: 0.7852 MB / 0.7481 GB
make -j1 -f Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries.makefile
(rm -f Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe ; mkfifo Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe >> ../files/Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries.sim & ./Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries  -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.Movers.Examples.PumpsSeries.pipe 2>&1)