Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements.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/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-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(IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements,tolerance=1e-06,outputFormat="empty",numberOfIntervals=17520,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements") translateModel(IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements,tolerance=1e-06,outputFormat="empty",numberOfIntervals=17520,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001504/0.001504, allocations: 116.6 kB / 17.04 MB, free: 6.133 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001303/0.001303, allocations: 196 kB / 17.98 MB, free: 5.23 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.428/1.428, allocations: 222.9 MB / 241.7 MB, free: 15.17 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.725/0.725, allocations: 115.3 MB / 407.1 MB, free: 6.211 MB / 318.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001308/0.001308, allocations: 63.59 kB / 0.5582 GB, free: 32.23 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1473/0.1486, allocations: 76.17 MB / 0.6326 GB, free: 4.527 MB / 478.1 MB Notification: Performance of NFInst.instantiate(IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements): time 0.537/0.6857, allocations: 163.6 MB / 0.7923 GB, free: 14.07 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.03441/0.7201, allocations: 27.39 MB / 0.819 GB, free: 8.918 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004474/0.7246, allocations: 82.97 kB / 0.8191 GB, free: 8.891 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.003558/0.7282, allocations: 1.122 MB / 0.8202 GB, free: 8.102 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.006932/0.7352, allocations: 1.939 MB / 0.8221 GB, free: 6.902 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.005589/0.7409, allocations: 1.891 MB / 0.824 GB, free: 5.543 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.008933/0.7498, allocations: 5.951 MB / 0.8298 GB, free: 2.012 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.007748/0.7576, allocations: 4.579 MB / 0.8342 GB, free: 15.27 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005703/0.7633, allocations: 2.294 MB / 0.8365 GB, free: 14.02 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.005757/0.7691, allocations: 2.782 MB / 0.8392 GB, free: 12.34 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 0.002234/0.7714, allocations: 0.5053 MB / 0.8397 GB, free: 12.34 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004644/0.776, allocations: 1.122 MB / 0.8408 GB, free: 12.07 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 0.002693/0.7788, allocations: 1.31 MB / 0.8421 GB, free: 11.07 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.006533/0.7853, allocations: 2.385 MB / 0.8444 GB, free: 9.379 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.01095/0.7963, allocations: 6.67 MB / 0.8509 GB, free: 2.902 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 5.22e-06/0.7964, allocations: 0 / 0.8509 GB, free: 2.902 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.743e-06/0.7964, allocations: 0 / 0.8509 GB, free: 2.902 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 0.0002542/0.7966, allocations: 0 / 0.8509 GB, free: 2.902 MB / 0.6075 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 908 * Number of variables: 908 Notification: Performance of Generate backend data structure: time 0.0128/0.8094, allocations: 5.083 MB / 0.8559 GB, free: 13.74 MB / 0.6231 GB Notification: Performance of prepare preOptimizeDAE: time 4.233e-05/0.8095, allocations: 12.03 kB / 0.8559 GB, free: 13.73 MB / 0.6231 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01359/0.8231, allocations: 2.807 MB / 0.8586 GB, free: 10.91 MB / 0.6231 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.005484/0.8286, allocations: 2.513 MB / 0.8611 GB, free: 8.375 MB / 0.6231 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002703/0.8289, allocations: 267.1 kB / 0.8613 GB, free: 8.113 MB / 0.6231 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00123/0.8302, allocations: 355.9 kB / 0.8617 GB, free: 7.766 MB / 0.6231 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01347/0.8436, allocations: 5.584 MB / 0.8671 GB, free: 2.113 MB / 0.6231 GB Notification: Performance of preOpt findStateOrder (simulation): time 8.059e-05/0.8437, allocations: 8 kB / 0.8671 GB, free: 2.105 MB / 0.6231 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004342/0.8442, allocations: 147.9 kB / 0.8673 GB, free: 1.961 MB / 0.6231 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.093e-05/0.8443, allocations: 88 kB / 0.8674 GB, free: 1.875 MB / 0.6231 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01651/0.8608, allocations: 6.706 MB / 0.8739 GB, free: 11.16 MB / 0.6387 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 0.03111/0.8919, allocations: 16.87 MB / 0.8904 GB, free: 9.637 MB / 0.6544 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01014/0.9021, allocations: 4.392 MB / 0.8947 GB, free: 5.23 MB / 0.6544 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.006146/0.9083, allocations: 2.784 MB / 0.8974 GB, free: 2.441 MB / 0.6544 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0009603/0.9093, allocations: 0.6716 MB / 0.8981 GB, free: 1.656 MB / 0.6544 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.006423/0.9157, allocations: 2.818 MB / 0.9008 GB, free: 14.8 MB / 0.67 GB Notification: Performance of pre-optimization done (n=309): time 8.476e-06/0.9158, allocations: 0 / 0.9008 GB, free: 14.8 MB / 0.67 GB Notification: Performance of matching and sorting (n=309): time 0.02342/0.9392, allocations: 8.85 MB / 0.9094 GB, free: 5.844 MB / 0.67 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001362/0.9394, allocations: 222.3 kB / 0.9097 GB, free: 5.582 MB / 0.67 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003806/0.9432, allocations: 2.652 MB / 0.9122 GB, free: 2.914 MB / 0.67 GB Notification: Performance of collectPreVariables (initialization): time 0.0007317/0.9439, allocations: 81.7 kB / 0.9123 GB, free: 2.828 MB / 0.67 GB Notification: Performance of collectInitialEqns (initialization): time 0.001362/0.9453, allocations: 1.473 MB / 0.9138 GB, free: 1.34 MB / 0.67 GB Notification: Performance of collectInitialBindings (initialization): time 0.00143/0.9467, allocations: 1.009 MB / 0.9148 GB, free: 348 kB / 0.67 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001058/0.9478, allocations: 0.5447 MB / 0.9153 GB, free: 15.79 MB / 0.6856 GB Notification: Performance of setup shared object (initialization): time 9.954e-05/0.9479, allocations: 301.1 kB / 0.9156 GB, free: 15.49 MB / 0.6856 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005189/0.9531, allocations: 2.199 MB / 0.9177 GB, free: 13.29 MB / 0.6856 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005839/0.959, allocations: 2.526 MB / 0.9202 GB, free: 10.7 MB / 0.6856 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01129/0.9703, allocations: 4.653 MB / 0.9247 GB, free: 5.961 MB / 0.6856 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.878e-05/0.9704, allocations: 3.984 kB / 0.9247 GB, free: 5.957 MB / 0.6856 GB Notification: Performance of matching and sorting (n=355) (initialization): time 0.01436/0.9847, allocations: 5.624 MB / 0.9302 GB, free: 296 kB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 3.853e-05/0.9848, allocations: 11.94 kB / 0.9302 GB, free: 284 kB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.779e-05/0.9848, allocations: 4 kB / 0.9302 GB, free: 280 kB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001307/0.9861, allocations: 0.5414 MB / 0.9308 GB, free: 15.73 MB / 0.7012 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004526/0.9907, allocations: 0.8346 MB / 0.9316 GB, free: 14.89 MB / 0.7012 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007906/0.9986, allocations: 5.727 MB / 0.9372 GB, free: 9.02 MB / 0.7012 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004468/1.003, allocations: 0.5867 MB / 0.9377 GB, free: 8.43 MB / 0.7012 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007411/1.004, allocations: 115.9 kB / 0.9379 GB, free: 8.316 MB / 0.7012 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 17 * Number of states: 0 () * Number of discrete variables: 34 ($PRE.intGai.nextTimeEvent,$whenCondition1,weaDat.conTim.canRepeatWeatherFile,weaDat.conTimMin.canRepeatWeatherFile,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,intGai.nextTimeEvent,HDirTil[2].incAng.decAng.tNext,$PRE.HDirTil[2].incAng.decAng.tNext,HDirTil[1].incAng.decAng.tNext,$PRE.HDirTil[1].incAng.decAng.tNext,HDifTil[2].incAng.decAng.tNext,$PRE.HDifTil[2].incAng.decAng.tNext,HDifTil[1].incAng.decAng.tNext,$PRE.HDifTil[1].incAng.decAng.tNext,weaDat.decAng.tNext,$PRE.weaDat.decAng.tNext,weaDat.eqnTim.tNext,$PRE.weaDat.eqnTim.tNext,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,weaDat.locTim.tNext,$PRE.weaDat.locTim.tNext,$whenCondition2,$whenCondition3,$whenCondition4,$whenCondition5,$whenCondition6,$whenCondition7,$whenCondition8,$whenCondition9,$whenCondition10) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (310): * Single equations (assignments): 309 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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): 1 system {(4,42,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.002517/1.006, allocations: 1.039 MB / 0.9389 GB, free: 7.27 MB / 0.7012 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0008983/1.007, allocations: 300.2 kB / 0.9392 GB, free: 6.973 MB / 0.7012 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01474/1.022, allocations: 6.249 MB / 0.9453 GB, free: 0.6641 MB / 0.7012 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.893e-05/1.022, allocations: 39.98 kB / 0.9453 GB, free: 0.625 MB / 0.7012 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.62e-05/1.022, allocations: 12 kB / 0.9453 GB, free: 0.6133 MB / 0.7012 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.749e-05/1.022, allocations: 15.94 kB / 0.9453 GB, free: 0.5977 MB / 0.7012 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006352/1.029, allocations: 4.081 MB / 0.9493 GB, free: 12.55 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.479e-05/1.029, allocations: 0 / 0.9493 GB, free: 12.55 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.004083/1.033, allocations: 0.7722 MB / 0.9501 GB, free: 11.77 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001433/1.034, allocations: 0.5296 MB / 0.9506 GB, free: 11.23 MB / 0.7169 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0004536/1.035, allocations: 83.92 kB / 0.9507 GB, free: 11.15 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.008617/1.043, allocations: 7.539 MB / 0.958 GB, free: 3.316 MB / 0.7169 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.964e-06/1.043, allocations: 0 / 0.958 GB, free: 3.316 MB / 0.7169 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02011/1.063, allocations: 8.899 MB / 0.9667 GB, free: 10.34 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002335/1.066, allocations: 0.9064 MB / 0.9676 GB, free: 9.406 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0006725/1.066, allocations: 67.91 kB / 0.9677 GB, free: 9.34 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003283/1.07, allocations: 435.4 kB / 0.9681 GB, free: 8.914 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0005262/1.07, allocations: 226.3 kB / 0.9683 GB, free: 8.691 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002792/1.071, allocations: 115.9 kB / 0.9684 GB, free: 8.578 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.002798/1.073, allocations: 1.923 MB / 0.9703 GB, free: 6.648 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.61e-07/1.073, allocations: 0 / 0.9703 GB, free: 6.648 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.003447/1.077, allocations: 1.2 MB / 0.9715 GB, free: 5.445 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 5 (thermalZoneThreeElements.volAir.dynBal.U,thermalZoneThreeElements.volAir.dynBal.m,thermalZoneThreeElements.extWallRC.thermCapExt[1].T,thermalZoneThreeElements.intWallRC.thermCapInt[1].T,thermalZoneThreeElements.floorRC.thermCapExt[1].T) * Number of discrete variables: 21 ($whenCondition10,$whenCondition9,$whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,weaDat.locTim.tNext,weaDat.conTimMin.tNext,weaDat.conTim.tNext,weaDat.eqnTim.tNext,weaDat.decAng.tNext,HDifTil[1].incAng.decAng.tNext,HDifTil[2].incAng.decAng.tNext,HDirTil[1].incAng.decAng.tNext,HDirTil[2].incAng.decAng.tNext,intGai.nextTimeEvent,intGai.nextTimeEventScaled) * Number of discrete states: 11 (intGai.nextTimeEventScaled,intGai.nextTimeEvent,HDirTil[2].incAng.decAng.tNext,HDirTil[1].incAng.decAng.tNext,HDifTil[2].incAng.decAng.tNext,HDifTil[1].incAng.decAng.tNext,weaDat.decAng.tNext,weaDat.eqnTim.tNext,weaDat.conTim.tNext,weaDat.conTimMin.tNext,weaDat.locTim.tNext) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (285): * Single equations (assignments): 271 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 11 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(4,36,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002592/1.079, allocations: 1.067 MB / 0.9725 GB, free: 4.746 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.01268/1.092, allocations: 5.428 MB / 0.9778 GB, free: 15.28 MB / 0.7481 GB Notification: Performance of simCode: created event and clocks part: time 5.63e-06/1.092, allocations: 0.6875 kB / 0.9778 GB, free: 15.28 MB / 0.7481 GB Notification: Performance of simCode: created simulation system equations: time 0.00707/1.099, allocations: 3.109 MB / 0.9808 GB, free: 12.14 MB / 0.7481 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003836/1.103, allocations: 0.7834 MB / 0.9816 GB, free: 11.4 MB / 0.7481 GB Warning: The hideResult annotation could not be evaluated, probably due to missing annotation(Evaluate=true). It is removed. Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01661/1.12, allocations: 8.676 MB / 0.9901 GB, free: 2.688 MB / 0.7481 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002272/1.122, allocations: 2.56 MB / 0.9926 GB, free: 112 kB / 0.7481 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.002021/1.124, allocations: 335.2 kB / 0.9929 GB, free: 15.78 MB / 0.7637 GB Notification: Performance of SimCode: time 7.11e-07/1.124, allocations: 0 / 0.9929 GB, free: 15.78 MB / 0.7637 GB Notification: Performance of Templates: time 0.4042/1.528, allocations: 92.6 MB / 1.083 GB, free: 321.9 MB / 0.8106 GB make -j1 -f IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements.makefile (rm -f IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements.pipe ; mkfifo IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements.pipe >> ../files/IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements.sim & ./IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.ThermalZones.ReducedOrder.Examples.SimpleRoomThreeElements.pipe 2>&1)