Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic.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) 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(Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic,tolerance=1e-06,outputFormat="empty",numberOfIntervals=100000,variableFilter="",fileNamePrefix="Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic") translateModel(Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic,tolerance=1e-06,outputFormat="empty",numberOfIntervals=100000,variableFilter="",fileNamePrefix="Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00104/0.00104, allocations: 85.72 kB / 16.31 MB, free: 5.676 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001114/0.001114, allocations: 182 kB / 17.21 MB, free: 5.59 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.608/1.608, allocations: 205.4 MB / 223.4 MB, free: 13.14 MB / 190.1 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 0.0004725/0.0004726, allocations: 14.33 kB / 280.2 MB, free: 3.715 MB / 222.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1169/0.1174, allocations: 47.58 MB / 327.7 MB, free: 4.062 MB / 270.1 MB Notification: Performance of NFInst.instantiate(Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic): time 0.004668/0.1221, allocations: 3.107 MB / 330.8 MB, free: 0.9375 MB / 270.1 MB Notification: Performance of NFInst.instExpressions: time 0.002884/0.125, allocations: 1.104 MB / 332 MB, free: 15.82 MB / 286.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003449/0.1254, allocations: 11.94 kB / 332 MB, free: 15.81 MB / 286.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0002256/0.1256, allocations: 59.55 kB / 332 MB, free: 15.75 MB / 286.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0003788/0.126, allocations: 91.25 kB / 332.1 MB, free: 15.66 MB / 286.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0005473/0.1266, allocations: 159.7 kB / 332.3 MB, free: 15.51 MB / 286.1 MB Notification: Performance of NFFlatten.flatten: time 0.0006326/0.1272, allocations: 0.5141 MB / 332.8 MB, free: 14.99 MB / 286.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0003972/0.1276, allocations: 222.5 kB / 333 MB, free: 14.77 MB / 286.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0002348/0.1279, allocations: 163.2 kB / 333.2 MB, free: 14.61 MB / 286.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0002289/0.1281, allocations: 175.1 kB / 333.3 MB, free: 14.44 MB / 286.1 MB Notification: Performance of NFPackage.collectConstants: time 6.962e-05/0.1282, allocations: 23.98 kB / 333.4 MB, free: 14.41 MB / 286.1 MB Notification: Performance of NFFlatten.collectFunctions: time 4.827e-05/0.1282, allocations: 20 kB / 333.4 MB, free: 14.39 MB / 286.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002272/0.1285, allocations: 79.62 kB / 333.4 MB, free: 14.32 MB / 286.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0001097/0.1286, allocations: 109.5 kB / 333.6 MB, free: 14.2 MB / 286.1 MB Notification: Performance of NFConvertDAE.convert: time 0.00058/0.1292, allocations: 471 kB / 334 MB, free: 13.74 MB / 286.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.559e-06/0.1292, allocations: 0 / 334 MB, free: 13.74 MB / 286.1 MB Notification: Performance of FrontEnd: time 1.703e-06/0.1292, allocations: 0 / 334 MB, free: 13.74 MB / 286.1 MB Notification: Performance of Transformations before backend: time 7.755e-06/0.1292, allocations: 0 / 334 MB, free: 13.74 MB / 286.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 97 * Number of variables: 97 Notification: Performance of Generate backend data structure: time 0.001504/0.1307, allocations: 0.7412 MB / 334.8 MB, free: 12.95 MB / 286.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.569e-05/0.1308, allocations: 8.031 kB / 334.8 MB, free: 12.94 MB / 286.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00016/0.131, allocations: 55.34 kB / 334.8 MB, free: 12.88 MB / 286.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0007725/0.1317, allocations: 375 kB / 335.2 MB, free: 12.48 MB / 286.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.053e-05/0.1318, allocations: 33 kB / 335.2 MB, free: 12.45 MB / 286.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001033/0.1319, allocations: 47.98 kB / 335.3 MB, free: 12.4 MB / 286.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001319/0.1333, allocations: 474.9 kB / 335.7 MB, free: 11.92 MB / 286.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.27e-05/0.1333, allocations: 4 kB / 335.7 MB, free: 11.92 MB / 286.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.426e-05/0.1334, allocations: 16 kB / 335.7 MB, free: 11.9 MB / 286.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.013e-05/0.1334, allocations: 11.98 kB / 335.8 MB, free: 11.89 MB / 286.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00111/0.1345, allocations: 355.8 kB / 336.1 MB, free: 11.54 MB / 286.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002462/0.137, allocations: 1.61 MB / 337.7 MB, free: 9.836 MB / 286.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.000823/0.1379, allocations: 359.4 kB / 338.1 MB, free: 9.477 MB / 286.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002833/0.1381, allocations: 137.2 kB / 338.2 MB, free: 9.34 MB / 286.1 MB Notification: Performance of preOpt evalFunc (simulation): time 2.825e-05/0.1382, allocations: 240 / 338.2 MB, free: 9.34 MB / 286.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005103/0.1387, allocations: 273 kB / 338.5 MB, free: 9.055 MB / 286.1 MB Notification: Performance of pre-optimization done (n=32): time 1.613e-06/0.1387, allocations: 4 kB / 338.5 MB, free: 9.051 MB / 286.1 MB Notification: Performance of matching and sorting (n=32): time 0.001372/0.1401, allocations: 0.5887 MB / 339.1 MB, free: 8.434 MB / 286.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 9.779e-05/0.1402, allocations: 118.8 kB / 339.2 MB, free: 8.293 MB / 286.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003537/0.1406, allocations: 316.3 kB / 339.5 MB, free: 7.977 MB / 286.1 MB Notification: Performance of collectPreVariables (initialization): time 4.762e-05/0.1406, allocations: 41.69 kB / 339.5 MB, free: 7.93 MB / 286.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.000195/0.1408, allocations: 244.1 kB / 339.8 MB, free: 7.688 MB / 286.1 MB Notification: Performance of collectInitialBindings (initialization): time 8.309e-05/0.1409, allocations: 90.75 kB / 339.9 MB, free: 7.598 MB / 286.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 1.788e-05/0.1409, allocations: 7.938 kB / 339.9 MB, free: 7.59 MB / 286.1 MB Notification: Performance of setup shared object (initialization): time 0.0001422/0.1411, allocations: 350.8 kB / 340.2 MB, free: 7.238 MB / 286.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000309/0.1414, allocations: 136.8 kB / 340.3 MB, free: 7.105 MB / 286.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000393/0.1418, allocations: 282.9 kB / 340.6 MB, free: 6.762 MB / 286.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0003268/0.1421, allocations: 159.9 kB / 340.8 MB, free: 6.605 MB / 286.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.469e-06/0.1422, allocations: 3.938 kB / 340.8 MB, free: 6.602 MB / 286.1 MB Notification: Performance of matching and sorting (n=51) (initialization): time 0.0008743/0.143, allocations: 482 kB / 341.2 MB, free: 6.121 MB / 286.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001509/0.1432, allocations: 212.5 kB / 341.5 MB, free: 5.852 MB / 286.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.528e-06/0.1432, allocations: 4 kB / 341.5 MB, free: 5.848 MB / 286.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002085/0.1434, allocations: 48.83 kB / 341.5 MB, free: 5.797 MB / 286.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002691/0.1437, allocations: 79.83 kB / 341.6 MB, free: 5.719 MB / 286.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001415/0.1451, allocations: 1.495 MB / 343.1 MB, free: 4.086 MB / 286.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003057/0.1455, allocations: 59.66 kB / 343.1 MB, free: 4.027 MB / 286.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.134e-05/0.1455, allocations: 24.11 kB / 343.2 MB, free: 4.004 MB / 286.1 MB Notification: Performance of prepare postOptimizeDAE: time 6.853e-06/0.1455, allocations: 4 kB / 343.2 MB, free: 4 MB / 286.1 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0007423/0.1463, allocations: 408.8 kB / 343.6 MB, free: 3.598 MB / 286.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.729e-06/0.1463, allocations: 4 kB / 343.6 MB, free: 3.594 MB / 286.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001197/0.1464, allocations: 44.83 kB / 343.6 MB, free: 3.547 MB / 286.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002475/0.1467, allocations: 71.84 kB / 343.7 MB, free: 3.477 MB / 286.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001253/0.1479, allocations: 1.491 MB / 345.2 MB, free: 1.848 MB / 286.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003257/0.1483, allocations: 59.78 kB / 345.2 MB, free: 1.789 MB / 286.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.925e-05/0.1483, allocations: 16 kB / 345.2 MB, free: 1.773 MB / 286.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 19 * Number of states: 0 () * Number of discrete variables: 21 ($PRE.meanVoltage.y,meanVoltage.y,$PRE.meanCurrent.y,meanCurrent.y,$whenCondition5,$whenCondition4,$whenCondition3,$PRE.rootMeanSquareVoltage.mean.y,rootMeanSquareVoltage.mean.y,$whenCondition2,$whenCondition1,pulse2.twoPulse.positiveThreshold[1].y,pulse2.twoPulse.negativeThreshold[1].y,$PRE.pulse2.twoPulse.timerPositive[1].entryTime,pulse2.twoPulse.timerPositive[1].entryTime,$PRE.pulse2.twoPulse.timerNegative[1].entryTime,pulse2.twoPulse.timerNegative[1].entryTime,pulse2.twoPulse.fire_n[1],pulse2.fire_p,$PRE.idealthyristor.off,idealthyristor.off) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (47): * Single equations (assignments): 46 * 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: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 4} Notification: Performance of prepare postOptimizeDAE: time 0.0003222/0.1486, allocations: 275.1 kB / 345.5 MB, free: 1.496 MB / 286.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.431e-05/0.1487, allocations: 39.61 kB / 345.6 MB, free: 1.457 MB / 286.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 8.412e-05/0.1488, allocations: 44.08 kB / 345.6 MB, free: 1.41 MB / 286.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.149e-06/0.1488, allocations: 4.078 kB / 345.6 MB, free: 1.406 MB / 286.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.174e-06/0.1488, allocations: 8 kB / 345.6 MB, free: 1.398 MB / 286.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.2e-06/0.1488, allocations: 0 / 345.6 MB, free: 1.398 MB / 286.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001385/0.1502, allocations: 0.902 MB / 346.5 MB, free: 448 kB / 286.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.859e-06/0.1502, allocations: 4 kB / 346.5 MB, free: 444 kB / 286.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001931/0.1504, allocations: 35.98 kB / 346.5 MB, free: 408 kB / 286.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001223/0.1506, allocations: 44.77 kB / 346.6 MB, free: 360 kB / 286.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.691e-05/0.1506, allocations: 11.98 kB / 346.6 MB, free: 348 kB / 286.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001225/0.1518, allocations: 1.41 MB / 348 MB, free: 14.8 MB / 302.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.981e-06/0.1519, allocations: 7.938 kB / 348 MB, free: 14.79 MB / 302.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001073/0.1529, allocations: 0.6247 MB / 348.6 MB, free: 14.15 MB / 302.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0001552/0.1531, allocations: 140.5 kB / 348.8 MB, free: 13.99 MB / 302.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.757e-05/0.1532, allocations: 8 kB / 348.8 MB, free: 13.98 MB / 302.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003458/0.1535, allocations: 35.97 kB / 348.8 MB, free: 13.95 MB / 302.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001471/0.1537, allocations: 35.95 kB / 348.9 MB, free: 13.91 MB / 302.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.303e-05/0.1537, allocations: 11.98 kB / 348.9 MB, free: 13.9 MB / 302.1 MB Notification: Performance of sorting global known variables: time 0.0003593/0.1541, allocations: 219.1 kB / 349.1 MB, free: 13.69 MB / 302.1 MB Notification: Performance of sort global known variables: time 2.3e-07/0.1541, allocations: 0 / 349.1 MB, free: 13.69 MB / 302.1 MB Notification: Performance of remove unused functions: time 0.001228/0.1553, allocations: 203.2 kB / 349.3 MB, free: 13.49 MB / 302.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 3 (meanVoltage.x,rootMeanSquareVoltage.mean.x,meanCurrent.x) * Number of discrete variables: 15 (pulse2.twoPulse.negativeThreshold[1].y,pulse2.twoPulse.positiveThreshold[1].y,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,meanVoltage.y,rootMeanSquareVoltage.mean.y,meanCurrent.y,pulse2.twoPulse.timerPositive[1].entryTime,pulse2.twoPulse.timerNegative[1].entryTime,pulse2.twoPulse.fire_n[1],pulse2.fire_p,idealthyristor.off) * Number of discrete states: 4 (meanVoltage.x,rootMeanSquareVoltage.mean.x,meanCurrent.x,idealthyristor.off) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (28): * Single equations (assignments): 22 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 5 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 4} Notification: Performance of Backend phase and start with SimCode phase: time 0.0001874/0.1555, allocations: 123.1 kB / 349.4 MB, free: 13.36 MB / 302.1 MB Notification: Performance of simCode: created initialization part: time 0.001466/0.157, allocations: 0.7728 MB / 350.2 MB, free: 12.57 MB / 302.1 MB Notification: Performance of simCode: created event and clocks part: time 2.805e-06/0.157, allocations: 448 / 350.2 MB, free: 12.57 MB / 302.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0004454/0.1575, allocations: 290.5 kB / 350.5 MB, free: 12.27 MB / 302.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.000454/0.1579, allocations: 57.31 kB / 350.5 MB, free: 12.21 MB / 302.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001827/0.1598, allocations: 0.9927 MB / 351.5 MB, free: 11.2 MB / 302.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004852/0.1603, allocations: 0.8353 MB / 352.3 MB, free: 10.34 MB / 302.1 MB Notification: Performance of simCode: alias equations: time 0.0002486/0.1606, allocations: 75.22 kB / 352.4 MB, free: 10.26 MB / 302.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 8.11e-05/0.1606, allocations: 31.44 kB / 352.4 MB, free: 10.23 MB / 302.1 MB Notification: Performance of SimCode: time 9.12e-07/0.1606, allocations: 0 / 352.4 MB, free: 10.23 MB / 302.1 MB Notification: Performance of Templates: time 0.01064/0.1713, allocations: 4.784 MB / 357.2 MB, free: 5.449 MB / 302.1 MB make -j1 -f Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic.makefile (rm -f Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic.pipe ; mkfifo Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic.pipe ; head -c 1048576 < Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic.pipe >> ../files/Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic.sim & ./Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic -abortSlowSimulation -alarm=480 -lv LOG_STATS > Modelica_3.2.2_Modelica.Electrical.PowerConverters.Examples.ACDC.Rectifier1Pulse.Thyristor1Pulse_R_Characteristic.pipe 2>&1)