Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain.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.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain") translateModel(IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001523/0.001524, allocations: 115.3 kB / 15.34 MB, free: 0.5156 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001786/0.001786, allocations: 188.8 kB / 16.25 MB, free: 6.633 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.494/1.494, allocations: 222.9 MB / 239.9 MB, free: 4.562 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 1.038/1.038, allocations: 135.1 MB / 425.2 MB, free: 11.82 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001512/0.001512, allocations: 64.45 kB / 0.5048 GB, free: 5.688 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2022/0.2038, allocations: 80.93 MB / 0.5839 GB, free: 4.926 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain): time 0.5671/0.7709, allocations: 199.5 MB / 0.7787 GB, free: 5.824 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.01765/0.7886, allocations: 10.08 MB / 0.7885 GB, free: 11.72 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003176/0.7918, allocations: 59.62 kB / 0.7886 GB, free: 11.66 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 0.004026/0.7959, allocations: 2.634 MB / 0.7911 GB, free: 9.02 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 0.006008/0.8019, allocations: 2.625 MB / 0.7937 GB, free: 6.387 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.004005/0.806, allocations: 1.34 MB / 0.795 GB, free: 5.062 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.006521/0.8125, allocations: 3.975 MB / 0.7989 GB, free: 1.086 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003697/0.8162, allocations: 2.135 MB / 0.801 GB, free: 14.91 MB / 0.6231 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004404/0.8206, allocations: 1.722 MB / 0.8027 GB, free: 13.18 MB / 0.6231 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004097/0.8247, allocations: 2.456 MB / 0.8051 GB, free: 10.73 MB / 0.6231 GB Notification: Performance of NFPackage.collectConstants: time 0.000705/0.8255, allocations: 188 kB / 0.8052 GB, free: 10.54 MB / 0.6231 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004019/0.8295, allocations: 1.543 MB / 0.8068 GB, free: 8.996 MB / 0.6231 GB Notification: Performance of NFScalarize.scalarize: time 0.001351/0.8308, allocations: 0.929 MB / 0.8077 GB, free: 8.066 MB / 0.6231 GB Notification: Performance of NFVerifyModel.verify: time 0.002368/0.8332, allocations: 1.281 MB / 0.8089 GB, free: 6.777 MB / 0.6231 GB Notification: Performance of NFConvertDAE.convert: time 0.00575/0.839, allocations: 3.781 MB / 0.8126 GB, free: 2.984 MB / 0.6231 GB Notification: Performance of FrontEnd - DAE generated: time 5.71e-06/0.839, allocations: 0 / 0.8126 GB, free: 2.984 MB / 0.6231 GB Notification: Performance of FrontEnd: time 2.154e-06/0.839, allocations: 0 / 0.8126 GB, free: 2.984 MB / 0.6231 GB Notification: Performance of Transformations before backend: time 5.566e-05/0.8391, allocations: 4 kB / 0.8126 GB, free: 2.98 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: 314 * Number of variables: 314 Notification: Performance of Generate backend data structure: time 0.005129/0.8442, allocations: 3.298 MB / 0.8158 GB, free: 15.62 MB / 0.6387 GB Notification: Performance of prepare preOptimizeDAE: time 4.613e-05/0.8443, allocations: 12.03 kB / 0.8158 GB, free: 15.61 MB / 0.6387 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001724/0.846, allocations: 459.6 kB / 0.8163 GB, free: 15.16 MB / 0.6387 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002168/0.8482, allocations: 1.545 MB / 0.8178 GB, free: 13.55 MB / 0.6387 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001671/0.8484, allocations: 148.1 kB / 0.8179 GB, free: 13.39 MB / 0.6387 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002025/0.8486, allocations: 135.9 kB / 0.8181 GB, free: 13.26 MB / 0.6387 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002637/0.8512, allocations: 1.507 MB / 0.8195 GB, free: 11.71 MB / 0.6387 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.351e-05/0.8513, allocations: 3.938 kB / 0.8195 GB, free: 11.7 MB / 0.6387 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001205/0.8514, allocations: 55.98 kB / 0.8196 GB, free: 11.65 MB / 0.6387 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.906e-05/0.8515, allocations: 46.44 kB / 0.8196 GB, free: 11.6 MB / 0.6387 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002218/0.8537, allocations: 1.251 MB / 0.8209 GB, free: 10.34 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 0.008828/0.8625, allocations: 6.52 MB / 0.8272 GB, free: 3.395 MB / 0.6387 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002187/0.8647, allocations: 1.195 MB / 0.8284 GB, free: 2.18 MB / 0.6387 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001101/0.8658, allocations: 0.6747 MB / 0.829 GB, free: 1.508 MB / 0.6387 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0004298/0.8663, allocations: 296.3 kB / 0.8293 GB, free: 1.164 MB / 0.6387 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001188/0.8675, allocations: 0.6726 MB / 0.83 GB, free: 496 kB / 0.6387 GB Notification: Performance of pre-optimization done (n=114): time 3.126e-06/0.8675, allocations: 3.938 kB / 0.83 GB, free: 492 kB / 0.6387 GB Notification: Performance of matching and sorting (n=114): time 0.005153/0.8726, allocations: 2.375 MB / 0.8323 GB, free: 14.05 MB / 0.6544 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.426e-05/0.8727, allocations: 64.41 kB / 0.8324 GB, free: 13.98 MB / 0.6544 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004333/0.8771, allocations: 4.026 MB / 0.8363 GB, free: 9.941 MB / 0.6544 GB Notification: Performance of collectPreVariables (initialization): time 0.0001515/0.8772, allocations: 57.69 kB / 0.8364 GB, free: 9.879 MB / 0.6544 GB Notification: Performance of collectInitialEqns (initialization): time 0.001127/0.8784, allocations: 1.275 MB / 0.8376 GB, free: 8.594 MB / 0.6544 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003859/0.8788, allocations: 378.7 kB / 0.838 GB, free: 8.219 MB / 0.6544 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003381/0.8791, allocations: 214.9 kB / 0.8382 GB, free: 8 MB / 0.6544 GB Notification: Performance of setup shared object (initialization): time 0.0001497/0.8793, allocations: 357.9 kB / 0.8385 GB, free: 7.645 MB / 0.6544 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0009767/0.8802, allocations: 0.4944 MB / 0.839 GB, free: 7.152 MB / 0.6544 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001169/0.8814, allocations: 0.7517 MB / 0.8397 GB, free: 6.309 MB / 0.6544 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002007/0.8834, allocations: 1.254 MB / 0.8409 GB, free: 4.969 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.601e-06/0.8835, allocations: 0 / 0.8409 GB, free: 4.969 MB / 0.6544 GB Notification: Performance of matching and sorting (n=156) (initialization): time 0.003323/0.8868, allocations: 1.776 MB / 0.8427 GB, free: 3.18 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 2.433e-05/0.8868, allocations: 8 kB / 0.8427 GB, free: 3.172 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.577e-05/0.8868, allocations: 8 kB / 0.8427 GB, free: 3.164 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006286/0.8875, allocations: 221.7 kB / 0.8429 GB, free: 2.941 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009174/0.8884, allocations: 243.6 kB / 0.8431 GB, free: 2.703 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004715/0.8931, allocations: 4.627 MB / 0.8477 GB, free: 13.8 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001465/0.8946, allocations: 170.9 kB / 0.8478 GB, free: 13.64 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001047/0.8947, allocations: 51.94 kB / 0.8479 GB, free: 13.59 MB / 0.67 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 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition8,$PRE.intGai.nextTimeEvent,$whenCondition7,$PRE.reference.nextTimeEvent,$whenCondition6,$PRE.outdoorTemp.nextTimeEvent,$whenCondition5,$PRE.tableSolRadWindow.nextTimeEvent,$whenCondition4,$PRE.ventRate.nextTimeEvent,$whenCondition3,$whenCondition1,mean.y_last,$PRE.mean.y_last,assEqu.satisfied,$PRE.assEqu.satisfied,reference.nextTimeEventScaled,$PRE.reference.nextTimeEventScaled,reference.nextTimeEvent,$whenCondition2,ventRate.nextTimeEventScaled,$PRE.ventRate.nextTimeEventScaled,ventRate.nextTimeEvent,greaterThreshold1.y,tableSolRadWindow.nextTimeEventScaled,$PRE.tableSolRadWindow.nextTimeEventScaled,tableSolRadWindow.nextTimeEvent,outdoorTemp.nextTimeEventScaled,$PRE.outdoorTemp.nextTimeEventScaled,outdoorTemp.nextTimeEvent,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,intGai.nextTimeEvent) * 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 (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(2,14,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.00134/0.8961, allocations: 0.8137 MB / 0.8487 GB, free: 12.76 MB / 0.67 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003442/0.8964, allocations: 272.5 kB / 0.8489 GB, free: 12.49 MB / 0.67 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002773/0.8992, allocations: 1.644 MB / 0.8505 GB, free: 10.82 MB / 0.67 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.095e-05/0.8992, allocations: 15.98 kB / 0.8505 GB, free: 10.81 MB / 0.67 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.865e-06/0.8992, allocations: 7.938 kB / 0.8506 GB, free: 10.8 MB / 0.67 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002304/0.9016, allocations: 1.436 MB / 0.852 GB, free: 9.309 MB / 0.67 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00599/0.9076, allocations: 3.602 MB / 0.8555 GB, free: 5.621 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.921e-06/0.9076, allocations: 160 / 0.8555 GB, free: 5.621 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007657/0.9084, allocations: 175.7 kB / 0.8556 GB, free: 5.449 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004965/0.9089, allocations: 209.6 kB / 0.8558 GB, free: 5.238 MB / 0.67 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.917e-05/0.909, allocations: 27.98 kB / 0.8559 GB, free: 5.211 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004564/0.9135, allocations: 4.657 MB / 0.8604 GB, free: 292 kB / 0.67 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.556e-06/0.9135, allocations: 0 / 0.8604 GB, free: 292 kB / 0.67 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.3528/1.266, allocations: 2.379 MB / 0.8627 GB, free: 218.8 MB / 0.67 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008136/1.267, allocations: 431.9 kB / 0.8632 GB, free: 218.8 MB / 0.67 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002217/1.267, allocations: 34.78 kB / 0.8632 GB, free: 218.8 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008902/1.268, allocations: 96.67 kB / 0.8633 GB, free: 218.7 MB / 0.67 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002597/1.269, allocations: 103.2 kB / 0.8634 GB, free: 218.7 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.812e-05/1.269, allocations: 39.3 kB / 0.8634 GB, free: 218.7 MB / 0.67 GB Notification: Performance of sorting global known variables: time 0.00297/1.272, allocations: 2.924 MB / 0.8663 GB, free: 218.2 MB / 0.67 GB Notification: Performance of sort global known variables: time 1.2e-07/1.272, allocations: 0 / 0.8663 GB, free: 218.2 MB / 0.67 GB Notification: Performance of remove unused functions: time 0.001696/1.273, allocations: 0.5153 MB / 0.8668 GB, free: 218.1 MB / 0.67 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 (96): * Single equations (assignments): 82 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 12 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(2,14,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001441/1.275, allocations: 0.595 MB / 0.8674 GB, free: 218 MB / 0.67 GB Notification: Performance of simCode: created initialization part: time 0.00388/1.279, allocations: 1.826 MB / 0.8691 GB, free: 217.4 MB / 0.67 GB Notification: Performance of simCode: created event and clocks part: time 7.464e-06/1.279, allocations: 0 / 0.8691 GB, free: 217.4 MB / 0.67 GB Notification: Performance of simCode: created simulation system equations: time 0.001391/1.28, allocations: 0.9269 MB / 0.87 GB, free: 216.9 MB / 0.67 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00289/1.283, allocations: 0.6037 MB / 0.8706 GB, free: 216.8 MB / 0.67 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008268/1.291, allocations: 6.543 MB / 0.877 GB, free: 213.7 MB / 0.67 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001352/1.293, allocations: 1.917 MB / 0.8789 GB, free: 212.8 MB / 0.67 GB Notification: Performance of simCode: alias equations: time 0.001271/1.294, allocations: 323.7 kB / 0.8792 GB, free: 212.8 MB / 0.67 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002948/1.294, allocations: 117.4 kB / 0.8793 GB, free: 212.8 MB / 0.67 GB Notification: Performance of SimCode: time 1.102e-06/1.294, allocations: 0 / 0.8793 GB, free: 212.8 MB / 0.67 GB Notification: Performance of Templates: time 0.05191/1.346, allocations: 25.42 MB / 0.9041 GB, free: 210.4 MB / 0.67 GB make -j1 -f IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain.makefile (rm -f IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain.pipe ; mkfifo IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain.pipe >> ../files/IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain.sim & ./IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_dev_IDEAS.ThermalZones.ReducedOrder.Validation.RoomWithLatentGain.pipe 2>&1)