Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 8.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo) Running command: translateModel(Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem") translateModel(Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo): time 1.743/1.743, allocations: 288.3 MB / 303.2 MB, free: 8.086 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.002295/0.002295, allocations: 173.6 kB / 371.8 MB, free: 10.3 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.698/1.698, allocations: 205.4 MB / 0.6306 GB, free: 9.961 MB / 458.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0008865/0.0008865, allocations: 93.25 kB / 0.7439 GB, free: 5.887 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0004815/0.0004817, allocations: 11.59 kB / 0.8668 GB, free: 142.1 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2352/0.2358, allocations: 115.3 MB / 0.9794 GB, free: 27.73 MB / 0.6198 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem): time 0.805/1.041, allocations: 288.9 MB / 1.262 GB, free: 7.402 MB / 0.7917 GB Notification: Performance of NFInst.instExpressions: time 0.0581/1.099, allocations: 35.8 MB / 1.296 GB, free: 3.547 MB / 0.823 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.008348/1.107, allocations: 146.9 kB / 1.297 GB, free: 3.402 MB / 0.823 GB Notification: Performance of NFTyping.typeComponents: time 0.01021/1.118, allocations: 2.722 MB / 1.299 GB, free: 0.668 MB / 0.823 GB Notification: Performance of NFTyping.typeBindings: time 0.02917/1.147, allocations: 8.21 MB / 1.307 GB, free: 8.441 MB / 0.8386 GB Notification: Performance of NFTyping.typeClassSections: time 0.01839/1.165, allocations: 5.754 MB / 1.313 GB, free: 2.738 MB / 0.8386 GB Notification: Performance of NFFlatten.flatten: time 0.01625/1.182, allocations: 6.979 MB / 1.32 GB, free: 11.75 MB / 0.8542 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00762/1.189, allocations: 3.324 MB / 1.323 GB, free: 8.371 MB / 0.8542 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01257/1.202, allocations: 4.229 MB / 1.327 GB, free: 4.129 MB / 0.8542 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00794/1.21, allocations: 2.564 MB / 1.33 GB, free: 1.555 MB / 0.8542 GB Notification: Performance of NFPackage.collectConstants: time 0.002529/1.212, allocations: 208 kB / 1.33 GB, free: 1.352 MB / 0.8542 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01275/1.225, allocations: 3.448 MB / 1.333 GB, free: 13.9 MB / 0.8698 GB Notification: Performance of NFScalarize.scalarize: time 0.003878/1.229, allocations: 1.418 MB / 1.335 GB, free: 12.48 MB / 0.8698 GB Notification: Performance of NFVerifyModel.verify: time 0.003651/1.233, allocations: 0.9874 MB / 1.336 GB, free: 11.48 MB / 0.8698 GB Notification: Performance of NFConvertDAE.convert: time 0.012/1.245, allocations: 6.125 MB / 1.341 GB, free: 5.34 MB / 0.8698 GB Notification: Performance of FrontEnd - DAE generated: time 3.787e-06/1.245, allocations: 0 / 1.341 GB, free: 5.34 MB / 0.8698 GB Notification: Performance of FrontEnd: time 2.454e-06/1.245, allocations: 3.938 kB / 1.341 GB, free: 5.336 MB / 0.8698 GB Notification: Performance of Transformations before backend: time 0.0003167/1.245, allocations: 0 / 1.341 GB, free: 5.336 MB / 0.8698 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 711 * Number of variables: 711 Notification: Performance of Generate backend data structure: time 0.01368/1.259, allocations: 4.98 MB / 1.346 GB, free: 288 kB / 0.8698 GB Notification: Performance of prepare preOptimizeDAE: time 4.342e-05/1.259, allocations: 15.97 kB / 1.346 GB, free: 272 kB / 0.8698 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009933/1.269, allocations: 1.477 MB / 1.348 GB, free: 14.78 MB / 0.8855 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01006/1.279, allocations: 3.49 MB / 1.351 GB, free: 11.21 MB / 0.8855 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0009054/1.28, allocations: 366.4 kB / 1.352 GB, free: 10.85 MB / 0.8855 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001034/1.281, allocations: 319.9 kB / 1.352 GB, free: 10.54 MB / 0.8855 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.009373/1.29, allocations: 3.442 MB / 1.355 GB, free: 6.969 MB / 0.8855 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.697e-05/1.29, allocations: 7.938 kB / 1.355 GB, free: 6.961 MB / 0.8855 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003635/1.291, allocations: 120 kB / 1.355 GB, free: 6.844 MB / 0.8855 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001099/1.291, allocations: 105.3 kB / 1.355 GB, free: 6.738 MB / 0.8855 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.007177/1.298, allocations: 2.917 MB / 1.358 GB, free: 3.809 MB / 0.8855 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 0.02727/1.325, allocations: 15.18 MB / 1.373 GB, free: 3.734 MB / 0.9011 GB Notification: Performance of preOpt comSubExp (simulation): time 0.004574/1.33, allocations: 2.061 MB / 1.375 GB, free: 1.656 MB / 0.9011 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0001669/1.33, allocations: 53.92 kB / 1.375 GB, free: 1.605 MB / 0.9011 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 7.574e-05/1.33, allocations: 60.56 kB / 1.375 GB, free: 1.539 MB / 0.9011 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.003223/1.334, allocations: 489.8 kB / 1.376 GB, free: 1.059 MB / 0.9011 GB Notification: Performance of pre-optimization done (n=187): time 1.077e-05/1.334, allocations: 0 / 1.376 GB, free: 1.059 MB / 0.9011 GB Notification: Performance of matching and sorting (n=195): time 0.01982/1.353, allocations: 7.304 MB / 1.383 GB, free: 9.645 MB / 0.9167 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.228e-05/1.354, allocations: 73.41 kB / 1.383 GB, free: 9.562 MB / 0.9167 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.006093/1.36, allocations: 3.828 MB / 1.387 GB, free: 5.723 MB / 0.9167 GB Notification: Performance of collectPreVariables (initialization): time 0.000424/1.36, allocations: 85.69 kB / 1.387 GB, free: 5.633 MB / 0.9167 GB Notification: Performance of collectInitialEqns (initialization): time 0.001651/1.362, allocations: 1.984 MB / 1.389 GB, free: 3.637 MB / 0.9167 GB Notification: Performance of collectInitialBindings (initialization): time 0.0007486/1.363, allocations: 0.6661 MB / 1.389 GB, free: 2.961 MB / 0.9167 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001224/1.363, allocations: 48 kB / 1.389 GB, free: 2.914 MB / 0.9167 GB Notification: Performance of setup shared object (initialization): time 0.0001959/1.363, allocations: 394.4 kB / 1.39 GB, free: 2.523 MB / 0.9167 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002203/1.365, allocations: 0.9842 MB / 1.391 GB, free: 1.535 MB / 0.9167 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002938/1.368, allocations: 1.935 MB / 1.393 GB, free: 15.18 MB / 0.9323 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: zone4.dynBal.medium.p = zone4.dynBal.p_start (sin.p = zone4.dynBal.p_start) Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: zone3.dynBal.medium.p = zone3.dynBal.p_start (sin.p = zone3.dynBal.p_start) Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: zone1.dynBal.medium.p = zone1.dynBal.p_start (sin.p = zone1.dynBal.p_start) Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: zone2.dynBal.medium.p = zone2.dynBal.p_start (sin.p = zone2.dynBal.p_start) Notification: Performance of analyzeInitialSystem (initialization): time 0.03137/1.399, allocations: 8.73 MB / 1.401 GB, free: 6.391 MB / 0.9323 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.688e-05/1.399, allocations: 4 kB / 1.401 GB, free: 6.387 MB / 0.9323 GB Notification: Performance of matching and sorting (n=284) (initialization): time 0.008415/1.408, allocations: 3.341 MB / 1.404 GB, free: 3.027 MB / 0.9323 GB Notification: Performance of prepare postOptimizeDAE: time 0.003342/1.411, allocations: 7.811 MB / 1.412 GB, free: 10.62 MB / 0.948 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.766e-05/1.411, allocations: 24 kB / 1.412 GB, free: 10.6 MB / 0.948 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001397/1.413, allocations: 294.2 kB / 1.412 GB, free: 10.3 MB / 0.948 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002574/1.415, allocations: 0.5538 MB / 1.413 GB, free: 9.746 MB / 0.948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001399/1.417, allocations: 1.817 MB / 1.415 GB, free: 7.852 MB / 0.948 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005547/1.422, allocations: 391.9 kB / 1.415 GB, free: 7.473 MB / 0.948 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004062/1.423, allocations: 116 kB / 1.415 GB, free: 7.359 MB / 0.948 GB Notification: Performance of prepare postOptimizeDAE: time 1.392e-05/1.423, allocations: 4 kB / 1.415 GB, free: 7.355 MB / 0.948 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.005515/1.428, allocations: 2.732 MB / 1.418 GB, free: 4.613 MB / 0.948 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.043e-05/1.428, allocations: 20.16 kB / 1.418 GB, free: 4.594 MB / 0.948 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006662/1.429, allocations: 210.4 kB / 1.418 GB, free: 4.379 MB / 0.948 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002056/1.431, allocations: 0.5187 MB / 1.419 GB, free: 3.859 MB / 0.948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005334/1.436, allocations: 5.203 MB / 1.424 GB, free: 14.21 MB / 0.9636 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005309/1.442, allocations: 384.9 kB / 1.424 GB, free: 13.84 MB / 0.9636 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004295/1.442, allocations: 112 kB / 1.424 GB, free: 13.73 MB / 0.9636 GB Warning: The initial conditions are over specified. The following 4 initial equations are redundant, so they are removed from the initialization sytem: zone4.dynBal.medium.p = zone4.dynBal.p_start zone3.dynBal.medium.p = zone3.dynBal.p_start zone1.dynBal.medium.p = zone1.dynBal.p_start zone2.dynBal.medium.p = zone2.dynBal.p_start. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 76 * 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 (266): * Single equations (assignments): 261 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 3 {2 9,1 3,1 3} Notification: Performance of prepare postOptimizeDAE: time 0.002736/1.445, allocations: 0.97 MB / 1.425 GB, free: 12.75 MB / 0.9636 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001481/1.446, allocations: 415.1 kB / 1.425 GB, free: 12.34 MB / 0.9636 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006526/1.453, allocations: 2.888 MB / 1.428 GB, free: 9.422 MB / 0.9636 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.107e-05/1.453, allocations: 20 kB / 1.428 GB, free: 9.402 MB / 0.9636 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.609e-06/1.453, allocations: 0 / 1.428 GB, free: 9.402 MB / 0.9636 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.004767/1.458, allocations: 2.413 MB / 1.431 GB, free: 6.934 MB / 0.9636 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 postOpt removeSimpleEquations (simulation): time 0.4562/1.914, allocations: 6.926 MB / 1.437 GB, free: 356.1 MB / 0.9636 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.365e-05/1.914, allocations: 9.125 kB / 1.437 GB, free: 356.1 MB / 0.9636 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003753/1.918, allocations: 479.7 kB / 1.438 GB, free: 356.1 MB / 0.9636 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0006956/1.919, allocations: 174.8 kB / 1.438 GB, free: 356 MB / 0.9636 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0003777/1.919, allocations: 59.2 kB / 1.438 GB, free: 356 MB / 0.9636 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001302/1.92, allocations: 1.786 MB / 1.44 GB, free: 354.5 MB / 0.9636 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.632e-05/1.92, allocations: 14.66 kB / 1.44 GB, free: 354.5 MB / 0.9636 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01304/1.933, allocations: 5.613 MB / 1.445 GB, free: 352.3 MB / 0.9636 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002671/1.936, allocations: 0.7392 MB / 1.446 GB, free: 352 MB / 0.9636 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.00117/1.937, allocations: 53.94 kB / 1.446 GB, free: 352 MB / 0.9636 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.005818/1.943, allocations: 320.2 kB / 1.446 GB, free: 352 MB / 0.9636 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004627/1.944, allocations: 158.5 kB / 1.447 GB, free: 351.9 MB / 0.9636 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0003196/1.944, allocations: 89.27 kB / 1.447 GB, free: 351.9 MB / 0.9636 GB Notification: Performance of sorting global known variables: time 0.008152/1.952, allocations: 2.623 MB / 1.449 GB, free: 351 MB / 0.9636 GB Notification: Performance of sort global known variables: time 9.42e-07/1.952, allocations: 4.688 kB / 1.449 GB, free: 351 MB / 0.9636 GB Notification: Performance of remove unused functions: time 0.009065/1.961, allocations: 1.847 MB / 1.451 GB, free: 350.8 MB / 0.9636 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 39 * Number of states: 8 (zone2.dynBal.U,zone2.dynBal.mXi[1],zone1.dynBal.U,zone1.dynBal.mXi[1],zone3.dynBal.U,zone3.dynBal.mXi[1],zone4.dynBal.U,zone4.dynBal.mXi[1]) * 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 (189): * Single equations (assignments): 186 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 3 {2 9,1 3,1 3} Notification: Performance of Backend phase and start with SimCode phase: time 0.001382/1.963, allocations: 0.5302 MB / 1.452 GB, free: 350.7 MB / 0.9636 GB Notification: Performance of simCode: created initialization part: time 0.009232/1.972, allocations: 4.279 MB / 1.456 GB, free: 349.2 MB / 0.9636 GB Notification: Performance of simCode: created event and clocks part: time 2.064e-05/1.972, allocations: 3.344 kB / 1.456 GB, free: 349.2 MB / 0.9636 GB Notification: Performance of simCode: created simulation system equations: time 0.003045/1.975, allocations: 1.237 MB / 1.457 GB, free: 348.8 MB / 0.9636 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0121/1.987, allocations: 2.272 MB / 1.459 GB, free: 348.4 MB / 0.9636 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01638/2.003, allocations: 8.997 MB / 1.468 GB, free: 343.7 MB / 0.9636 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003061/2.007, allocations: 2.596 MB / 1.47 GB, free: 342.7 MB / 0.9636 GB Notification: Performance of simCode: alias equations: time 0.007189/2.014, allocations: 1.124 MB / 1.472 GB, free: 342.4 MB / 0.9636 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001449/2.015, allocations: 331.1 kB / 1.472 GB, free: 342.4 MB / 0.9636 GB Notification: Performance of SimCode: time 9.32e-07/2.015, allocations: 1.312 kB / 1.472 GB, free: 342.4 MB / 0.9636 GB Notification: Performance of Templates: time 0.1195/2.135, allocations: 81.88 MB / 1.552 GB, free: 278.7 MB / 0.9636 GB make -j1 -f Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem.makefile (rm -f Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem.pipe ; mkfifo Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem.pipe ; head -c 1048576 < Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem.pipe >> ../files/Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem.sim & ./Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.8.0.x_Buildings.Fluid.Movers.Validation.FlowControlled_dpSystem.pipe 2>&1)