Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain.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/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain") translateModel(IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008049/0.0008049, allocations: 90.98 kB / 15.06 MB, free: 1.094 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0008746/0.0008747, allocations: 172.7 kB / 15.95 MB, free: 204 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.159/1.159, allocations: 223.3 MB / 240 MB, free: 5.426 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.6518/0.6518, allocations: 132.4 MB / 423.4 MB, free: 2.059 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0002718/0.0002719, allocations: 8 kB / 0.5034 GB, free: 4.266 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3301/0.3304, allocations: 81.57 MB / 0.5831 GB, free: 3.988 MB / 430.1 MB Notification: Performance of NFInst.instantiate(IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain): time 0.1707/0.5011, allocations: 183.9 MB / 0.7627 GB, free: 8.188 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.01224/0.5134, allocations: 9.575 MB / 0.772 GB, free: 14.59 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001728/0.5152, allocations: 63.62 kB / 0.7721 GB, free: 14.53 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.002838/0.518, allocations: 2.509 MB / 0.7745 GB, free: 12.02 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 0.003912/0.522, allocations: 2.32 MB / 0.7768 GB, free: 9.688 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.00267/0.5246, allocations: 1.08 MB / 0.7778 GB, free: 8.621 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.004225/0.5289, allocations: 4.156 MB / 0.7819 GB, free: 4.457 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002172/0.5311, allocations: 1.556 MB / 0.7834 GB, free: 2.871 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00219/0.5333, allocations: 1.409 MB / 0.7848 GB, free: 1.457 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00239/0.5357, allocations: 1.99 MB / 0.7867 GB, free: 15.46 MB / 0.6231 GB Notification: Performance of NFPackage.collectConstants: time 0.0002617/0.5359, allocations: 68 kB / 0.7868 GB, free: 15.39 MB / 0.6231 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00177/0.5377, allocations: 0.8342 MB / 0.7876 GB, free: 14.56 MB / 0.6231 GB Notification: Performance of NFScalarize.scalarize: time 0.0006172/0.5383, allocations: 0.7748 MB / 0.7884 GB, free: 13.78 MB / 0.6231 GB Notification: Performance of NFVerifyModel.verify: time 0.0004288/0.5388, allocations: 0.4922 MB / 0.7889 GB, free: 13.28 MB / 0.6231 GB Notification: Performance of NFConvertDAE.convert: time 0.002026/0.5408, allocations: 2.697 MB / 0.7915 GB, free: 10.58 MB / 0.6231 GB Notification: Performance of FrontEnd - DAE generated: time 4.639e-06/0.5408, allocations: 0 / 0.7915 GB, free: 10.58 MB / 0.6231 GB Notification: Performance of FrontEnd: time 1.733e-06/0.5408, allocations: 0 / 0.7915 GB, free: 10.58 MB / 0.6231 GB Notification: Performance of Transformations before backend: time 2.053e-05/0.5409, allocations: 0 / 0.7915 GB, free: 10.58 MB / 0.6231 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 315 * Number of variables: 315 Notification: Performance of Generate backend data structure: time 0.003782/0.5446, allocations: 2.881 MB / 0.7943 GB, free: 7.633 MB / 0.6231 GB Notification: Performance of prepare preOptimizeDAE: time 3.349e-05/0.5447, allocations: 11.97 kB / 0.7943 GB, free: 7.621 MB / 0.6231 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001339/0.546, allocations: 455.7 kB / 0.7947 GB, free: 7.172 MB / 0.6231 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001689/0.5477, allocations: 1.435 MB / 0.7961 GB, free: 5.676 MB / 0.6231 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001457/0.5479, allocations: 144.1 kB / 0.7963 GB, free: 5.527 MB / 0.6231 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001612/0.5481, allocations: 136 kB / 0.7964 GB, free: 5.395 MB / 0.6231 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002154/0.5502, allocations: 1.515 MB / 0.7979 GB, free: 3.832 MB / 0.6231 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.691e-05/0.5503, allocations: 4 kB / 0.7979 GB, free: 3.828 MB / 0.6231 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001025/0.5504, allocations: 48 kB / 0.7979 GB, free: 3.781 MB / 0.6231 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.786e-05/0.5504, allocations: 46.44 kB / 0.798 GB, free: 3.734 MB / 0.6231 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001909/0.5523, allocations: 1.263 MB / 0.7992 GB, free: 2.465 MB / 0.6231 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 0.00663/0.559, allocations: 6.571 MB / 0.8056 GB, free: 11.46 MB / 0.6387 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001827/0.5608, allocations: 1.205 MB / 0.8068 GB, free: 10.24 MB / 0.6387 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0009528/0.5618, allocations: 0.6793 MB / 0.8075 GB, free: 9.559 MB / 0.6387 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003433/0.5621, allocations: 296.2 kB / 0.8078 GB, free: 9.215 MB / 0.6387 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001003/0.5631, allocations: 0.6735 MB / 0.8084 GB, free: 8.531 MB / 0.6387 GB Notification: Performance of pre-optimization done (n=113): time 2.304e-06/0.5631, allocations: 0 / 0.8084 GB, free: 8.531 MB / 0.6387 GB Notification: Performance of matching and sorting (n=113): time 0.004065/0.5672, allocations: 2.382 MB / 0.8107 GB, free: 6.098 MB / 0.6387 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.234e-05/0.5673, allocations: 64.41 kB / 0.8108 GB, free: 6.023 MB / 0.6387 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003476/0.5707, allocations: 4.039 MB / 0.8148 GB, free: 1.973 MB / 0.6387 GB Notification: Performance of collectPreVariables (initialization): time 7.397e-05/0.5708, allocations: 53.7 kB / 0.8148 GB, free: 1.914 MB / 0.6387 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008889/0.5717, allocations: 1.295 MB / 0.8161 GB, free: 0.6094 MB / 0.6387 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002536/0.572, allocations: 378.7 kB / 0.8164 GB, free: 240 kB / 0.6387 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.505e-05/0.572, allocations: 24 kB / 0.8165 GB, free: 216 kB / 0.6387 GB Notification: Performance of setup shared object (initialization): time 0.228/0.8, allocations: 349.9 kB / 0.8168 GB, free: 217.3 MB / 0.6387 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001316/0.8014, allocations: 0.5078 MB / 0.8173 GB, free: 217.3 MB / 0.6387 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009713/0.8024, allocations: 0.7615 MB / 0.818 GB, free: 217 MB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009396/0.8033, allocations: 0.6048 MB / 0.8186 GB, free: 217 MB / 0.6387 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.953e-06/0.8033, allocations: 5.906 kB / 0.8186 GB, free: 217 MB / 0.6387 GB Notification: Performance of matching and sorting (n=156) (initialization): time 0.002824/0.8062, allocations: 1.798 MB / 0.8204 GB, free: 216.8 MB / 0.6387 GB Notification: Performance of prepare postOptimizeDAE: time 2.052e-05/0.8062, allocations: 8.406 kB / 0.8204 GB, free: 216.8 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.236e-05/0.8062, allocations: 6 kB / 0.8204 GB, free: 216.8 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005508/0.8068, allocations: 220.8 kB / 0.8206 GB, free: 216.8 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008439/0.8076, allocations: 253.6 kB / 0.8208 GB, free: 216.8 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003209/0.8108, allocations: 4.204 MB / 0.825 GB, free: 213.4 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001001/0.8119, allocations: 200.4 kB / 0.8251 GB, free: 213.3 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.472e-05/0.812, allocations: 46.8 kB / 0.8252 GB, free: 213.3 MB / 0.6387 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 27 * Number of states: 0 () * Number of discrete variables: 35 ($PRE.assEqu.nFai,assEqu.nFai,$whenCondition8,$whenCondition7,$PRE.intGai.nextTimeEvent,$whenCondition6,$PRE.reference.nextTimeEvent,$whenCondition5,$PRE.outdoorTemp.nextTimeEvent,$whenCondition4,$PRE.tableSolRadWindow.nextTimeEvent,$whenCondition3,$PRE.ventRate.nextTimeEvent,$whenCondition1,$whenCondition2,reference.nextTimeEvent,$PRE.reference.nextTimeEventScaled,reference.nextTimeEventScaled,$PRE.assEqu.satisfied,assEqu.satisfied,$PRE.mean.y_last,mean.y_last,intGai.nextTimeEvent,$PRE.intGai.nextTimeEventScaled,intGai.nextTimeEventScaled,outdoorTemp.nextTimeEvent,$PRE.outdoorTemp.nextTimeEventScaled,outdoorTemp.nextTimeEventScaled,tableSolRadWindow.nextTimeEvent,$PRE.tableSolRadWindow.nextTimeEventScaled,tableSolRadWindow.nextTimeEventScaled,greaterThreshold1.y,ventRate.nextTimeEvent,$PRE.ventRate.nextTimeEventScaled,ventRate.nextTimeEventScaled) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (138): * Single equations (assignments): 136 * 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: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 2 {(2,100.0%) 14,(1,100.0%) 3} * Non-linear torn systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.001025/0.813, allocations: 0.8185 MB / 0.826 GB, free: 213 MB / 0.6387 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000225/0.8132, allocations: 277 kB / 0.8262 GB, free: 212.8 MB / 0.6387 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002474/0.8157, allocations: 1.646 MB / 0.8279 GB, free: 212.2 MB / 0.6387 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.157e-06/0.8157, allocations: 13.5 kB / 0.8279 GB, free: 212.2 MB / 0.6387 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.041e-06/0.8157, allocations: 3.984 kB / 0.8279 GB, free: 212.2 MB / 0.6387 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001916/0.8176, allocations: 1.437 MB / 0.8293 GB, free: 211.5 MB / 0.6387 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004593/0.8222, allocations: 3.611 MB / 0.8328 GB, free: 210 MB / 0.6387 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.468e-06/0.8223, allocations: 8.031 kB / 0.8328 GB, free: 210 MB / 0.6387 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006768/0.8229, allocations: 172.3 kB / 0.833 GB, free: 210 MB / 0.6387 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004001/0.8234, allocations: 210.2 kB / 0.8332 GB, free: 209.9 MB / 0.6387 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.229e-05/0.8234, allocations: 31.02 kB / 0.8332 GB, free: 209.9 MB / 0.6387 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002885/0.8263, allocations: 4.197 MB / 0.8373 GB, free: 206.5 MB / 0.6387 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.635e-06/0.8263, allocations: 2.625 kB / 0.8373 GB, free: 206.5 MB / 0.6387 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003002/0.8293, allocations: 2.382 MB / 0.8396 GB, free: 205.4 MB / 0.6387 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004645/0.8298, allocations: 454.6 kB / 0.8401 GB, free: 205.1 MB / 0.6387 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001816/0.83, allocations: 31.72 kB / 0.8401 GB, free: 205.1 MB / 0.6387 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007078/0.8307, allocations: 108.5 kB / 0.8402 GB, free: 205.1 MB / 0.6387 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001576/0.8309, allocations: 100.9 kB / 0.8403 GB, free: 205.1 MB / 0.6387 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.066e-05/0.831, allocations: 44.34 kB / 0.8403 GB, free: 205.1 MB / 0.6387 GB Notification: Performance of sorting global known variables: time 0.002565/0.8335, allocations: 2.93 MB / 0.8432 GB, free: 203.8 MB / 0.6387 GB Notification: Performance of sort global known variables: time 1.2e-07/0.8335, allocations: 0 / 0.8432 GB, free: 203.8 MB / 0.6387 GB Notification: Performance of remove unused functions: time 0.001317/0.8349, allocations: 0.5183 MB / 0.8437 GB, free: 203.7 MB / 0.6387 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 6 * Number of states: 7 (thermalZoneTwoElements.volMoiAir.dynBal.U,thermalZoneTwoElements.volMoiAir.dynBal.m,thermalZoneTwoElements.volMoiAir.dynBal.mXi[1],thermalZoneTwoElements.extWallRC.thermCapExt[1].T,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,assEqu.diff,mean.x) * Number of discrete variables: 22 ($whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,intGai.nextTimeEvent,intGai.nextTimeEventScaled,reference.nextTimeEvent,reference.nextTimeEventScaled,outdoorTemp.nextTimeEvent,outdoorTemp.nextTimeEventScaled,tableSolRadWindow.nextTimeEvent,tableSolRadWindow.nextTimeEventScaled,greaterThreshold1.y,ventRate.nextTimeEvent,ventRate.nextTimeEventScaled,assEqu.satisfied,assEqu.nFai,mean.y_last) * Number of discrete states: 13 (intGai.nextTimeEvent,reference.nextTimeEvent,outdoorTemp.nextTimeEvent,tableSolRadWindow.nextTimeEvent,ventRate.nextTimeEvent,mean.x,assEqu.satisfied,assEqu.nFai,ventRate.nextTimeEventScaled,tableSolRadWindow.nextTimeEventScaled,outdoorTemp.nextTimeEventScaled,reference.nextTimeEventScaled,intGai.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (95): * Single equations (assignments): 81 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 12 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 2 {(2,100.0%) 14,(1,100.0%) 3} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.001138/0.836, allocations: 0.6009 MB / 0.8443 GB, free: 203.5 MB / 0.6387 GB Notification: Performance of simCode: created initialization part: time 0.001938/0.838, allocations: 1.537 MB / 0.8458 GB, free: 202.7 MB / 0.6387 GB Notification: Performance of simCode: created event and clocks part: time 2.294e-06/0.838, allocations: 0 / 0.8458 GB, free: 202.7 MB / 0.6387 GB Notification: Performance of simCode: created simulation system equations: time 0.001033/0.839, allocations: 0.9323 MB / 0.8467 GB, free: 202.1 MB / 0.6387 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001879/0.8409, allocations: 0.5705 MB / 0.8473 GB, free: 201.8 MB / 0.6387 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005185/0.8461, allocations: 6.439 MB / 0.8536 GB, free: 197.3 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009598/0.8471, allocations: 1.922 MB / 0.8554 GB, free: 195.3 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.0007501/0.8478, allocations: 322.9 kB / 0.8557 GB, free: 195 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002311/0.8481, allocations: 115.4 kB / 0.8558 GB, free: 194.9 MB / 0.6387 GB Notification: Performance of SimCode: time 3.01e-07/0.8481, allocations: 0 / 0.8558 GB, free: 194.9 MB / 0.6387 GB Notification: Performance of Templates: time 0.02805/0.8761, allocations: 23.51 MB / 0.8788 GB, free: 171.7 MB / 0.6387 GB make -j1 -f IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain.makefile (rm -f IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain.pipe ; mkfifo IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain.pipe ; head -c 1048576 < IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain.pipe >> ../files/IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain.sim & ./IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithoutLatentGain.pipe 2>&1)