Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine.conf.json 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) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 1.0.1-master/package.mo", uses=false) Using package PowerSystems with version 1.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 1.0.1-master/package.mo) 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) Running command: translateModel(PowerSystems.Examples.AC3ph.Generation.TieLine,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine") translateModel(PowerSystems.Examples.AC3ph.Generation.TieLine,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001583/0.001583, allocations: 170 kB / 15.77 MB, free: 6.32 MB / 13.93 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.465/1.465, allocations: 205.4 MB / 221.9 MB, free: 13.76 MB / 186.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0007066/0.0007065, allocations: 94.25 kB / 270.3 MB, free: 13.29 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/PowerSystems 1.0.1-master/package.mo): time 0.1761/0.1761, allocations: 38.07 MB / 356.6 MB, free: 0.7852 MB / 250.7 MB Notification: Performance of FrontEnd - loaded program: time 0.0003251/0.0003251, allocations: 12 kB / 422.7 MB, free: 26.44 MB / 282.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.09992/0.1003, allocations: 56.34 MB / 479.1 MB, free: 2.039 MB / 314.7 MB Notification: Performance of NFInst.instantiate(PowerSystems.Examples.AC3ph.Generation.TieLine): time 0.01844/0.1187, allocations: 19.39 MB / 498.5 MB, free: 14.59 MB / 346.7 MB Notification: Performance of NFInst.instExpressions: time 0.01931/0.1381, allocations: 10.82 MB / 0.4973 GB, free: 3.746 MB / 346.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.004064/0.1422, allocations: 147 kB / 0.4975 GB, free: 3.602 MB / 346.7 MB Notification: Performance of NFTyping.typeComponents: time 0.7936/0.9359, allocations: 217.3 MB / 0.7097 GB, free: 156.1 MB / 490.7 MB Notification: Performance of NFTyping.typeBindings: time 0.006174/0.9421, allocations: 1.985 MB / 0.7116 GB, free: 156.1 MB / 490.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.004391/0.9465, allocations: 1.377 MB / 0.7129 GB, free: 155.7 MB / 490.7 MB Notification: Performance of NFFlatten.flatten: time 0.03646/0.983, allocations: 33.47 MB / 0.7456 GB, free: 133.6 MB / 490.7 MB Notification: Performance of NFFlatten.resolveConnections: time 0.004675/0.9877, allocations: 2.789 MB / 0.7483 GB, free: 131.6 MB / 490.7 MB Notification: Performance of NFEvalConstants.evaluate: time 0.05856/1.046, allocations: 55.61 MB / 0.8027 GB, free: 78.83 MB / 490.7 MB Notification: Performance of NFSimplifyModel.simplify: time 0.004316/1.051, allocations: 2.55 MB / 0.8051 GB, free: 76.46 MB / 490.7 MB Notification: Performance of NFPackage.collectConstants: time 0.0008647/1.052, allocations: 144 kB / 0.8053 GB, free: 76.32 MB / 490.7 MB Notification: Performance of NFFlatten.collectFunctions: time 0.00199/1.054, allocations: 0.5862 MB / 0.8059 GB, free: 75.75 MB / 490.7 MB Notification: Performance of NFScalarize.scalarize: time 0.001812/1.055, allocations: 1.655 MB / 0.8075 GB, free: 74.11 MB / 490.7 MB Notification: Performance of NFVerifyModel.verify: time 0.001186/1.057, allocations: 0.7418 MB / 0.8082 GB, free: 73.36 MB / 490.7 MB Notification: Performance of NFConvertDAE.convert: time 0.004277/1.061, allocations: 4.8 MB / 0.8129 GB, free: 68.69 MB / 490.7 MB Notification: Performance of FrontEnd - DAE generated: time 8.506e-06/1.061, allocations: 0 / 0.8129 GB, free: 68.69 MB / 490.7 MB Notification: Performance of FrontEnd: time 3.056e-06/1.061, allocations: 0 / 0.8129 GB, free: 68.69 MB / 490.7 MB Notification: Performance of Transformations before backend: time 0.0001876/1.061, allocations: 0 / 0.8129 GB, free: 68.69 MB / 490.7 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 703 * Number of variables: 703 Notification: Performance of Generate backend data structure: time 0.009232/1.07, allocations: 4.084 MB / 0.8169 GB, free: 64.58 MB / 490.7 MB Notification: Performance of prepare preOptimizeDAE: time 4.446e-05/1.07, allocations: 12.03 kB / 0.8169 GB, free: 64.57 MB / 490.7 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003281/1.074, allocations: 0.6508 MB / 0.8175 GB, free: 63.91 MB / 490.7 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.007298/1.081, allocations: 3.382 MB / 0.8208 GB, free: 60.53 MB / 490.7 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001405/1.081, allocations: 195.9 kB / 0.821 GB, free: 60.34 MB / 490.7 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0008394/1.082, allocations: 344.1 kB / 0.8213 GB, free: 60.01 MB / 490.7 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005627/1.088, allocations: 3.876 MB / 0.8251 GB, free: 56.04 MB / 490.7 MB Notification: Performance of preOpt findStateOrder (simulation): time 8.322e-05/1.088, allocations: 15.91 kB / 0.8251 GB, free: 56.02 MB / 490.7 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002618/1.088, allocations: 114.8 kB / 0.8252 GB, free: 55.91 MB / 490.7 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0006536/1.089, allocations: 253 kB / 0.8255 GB, free: 55.66 MB / 490.7 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.005323/1.094, allocations: 3.658 MB / 0.8291 GB, free: 51.99 MB / 490.7 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.01862/1.113, allocations: 12.96 MB / 0.8417 GB, free: 38.68 MB / 490.7 MB Notification: Performance of preOpt comSubExp (simulation): time 0.003747/1.116, allocations: 2.704 MB / 0.8444 GB, free: 35.98 MB / 490.7 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.002372/1.119, allocations: 1.735 MB / 0.8461 GB, free: 34.25 MB / 490.7 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0001157/1.119, allocations: 32.8 kB / 0.8461 GB, free: 34.21 MB / 490.7 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.002062/1.121, allocations: 1.575 MB / 0.8476 GB, free: 32.62 MB / 490.7 MB Notification: Performance of pre-optimization done (n=223): time 5.25e-06/1.121, allocations: 0 / 0.8476 GB, free: 32.62 MB / 490.7 MB Notification: Performance of matching and sorting (n=264): time 0.04937/1.17, allocations: 19.4 MB / 0.8666 GB, free: 13.17 MB / 490.7 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001032/1.171, allocations: 269.4 kB / 0.8668 GB, free: 12.85 MB / 490.7 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003971/1.175, allocations: 2.762 MB / 0.8695 GB, free: 10.08 MB / 490.7 MB Notification: Performance of collectPreVariables (initialization): time 0.0004032/1.175, allocations: 73.7 kB / 0.8696 GB, free: 10 MB / 490.7 MB Notification: Performance of collectInitialEqns (initialization): time 0.0008491/1.176, allocations: 1.519 MB / 0.8711 GB, free: 8.473 MB / 490.7 MB Notification: Performance of collectInitialBindings (initialization): time 0.0007447/1.177, allocations: 0.9421 MB / 0.872 GB, free: 7.535 MB / 490.7 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001606/1.177, allocations: 63.94 kB / 0.8721 GB, free: 7.473 MB / 490.7 MB Notification: Performance of setup shared object (initialization): time 0.0001404/1.177, allocations: 440.6 kB / 0.8725 GB, free: 7.035 MB / 490.7 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002286/1.179, allocations: 1.671 MB / 0.8741 GB, free: 5.363 MB / 490.7 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002498/1.182, allocations: 2.268 MB / 0.8763 GB, free: 2.887 MB / 490.7 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.002591/1.184, allocations: 2.02 MB / 0.8783 GB, free: 0.8477 MB / 490.7 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.051e-05/1.184, allocations: 4 kB / 0.8783 GB, free: 0.8438 MB / 490.7 MB Notification: Performance of matching and sorting (n=406) (initialization): time 0.2525/1.437, allocations: 6.74 MB / 0.8849 GB, free: 166.9 MB / 490.7 MB Notification: Performance of prepare postOptimizeDAE: time 0.0003373/1.437, allocations: 0.5041 MB / 0.8854 GB, free: 166.3 MB / 490.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.047e-05/1.437, allocations: 15.09 kB / 0.8854 GB, free: 166.3 MB / 490.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.007171/1.444, allocations: 2.307 MB / 0.8876 GB, free: 165.7 MB / 490.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005463/1.45, allocations: 1.358 MB / 0.889 GB, free: 165.6 MB / 490.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04347/1.493, allocations: 44.88 MB / 0.9328 GB, free: 129.8 MB / 490.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003711/1.497, allocations: 283.7 kB / 0.9331 GB, free: 129.6 MB / 490.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002724/1.498, allocations: 124 kB / 0.9332 GB, free: 129.4 MB / 490.7 MB Notification: Performance of prepare postOptimizeDAE: time 9.157e-06/1.498, allocations: 4 kB / 0.9332 GB, free: 129.4 MB / 490.7 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.009902/1.507, allocations: 6.256 MB / 0.9393 GB, free: 123 MB / 490.7 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.732e-05/1.507, allocations: 16.03 kB / 0.9393 GB, free: 123 MB / 490.7 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.006041/1.514, allocations: 2.31 MB / 0.9416 GB, free: 120.6 MB / 490.7 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002091/1.516, allocations: 0.5851 MB / 0.9421 GB, free: 120.1 MB / 490.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03102/1.547, allocations: 35.57 MB / 0.9769 GB, free: 82.61 MB / 490.7 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003396/1.55, allocations: 239.8 kB / 0.9771 GB, free: 82.38 MB / 490.7 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003706/1.55, allocations: 124 kB / 0.9772 GB, free: 82.26 MB / 490.7 MB Warning: Assuming fixed start value for the following 3 variables: setpts3.p_set:VARIABLE(start = 1.0 unit = "1" fixed = true protected = true ) "setpt turbine power pu" type: Real setpts2.p_set:VARIABLE(start = 1.0 unit = "1" fixed = true protected = true ) "setpt turbine power pu" type: Real setpts1.p_set:VARIABLE(start = 1.0 unit = "1" fixed = true protected = true ) "setpt turbine power pu" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 61 * Number of states: 0 () * Number of discrete variables: 2 (system.initime,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (295): * Single equations (assignments): 274 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 7 * Torn equation systems: 14 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 7 {1,1,1,1,1,1,2} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 12 {(1,100.0%) 2,(1,100.0%) 2,(1,100.0%) 2,(1,100.0%) 2,(1,100.0%) 1,(1,100.0%) 2,(1,100.0%) 2,(1,100.0%) 2,(1,100.0%) 2,(4,62.5%) 20,(1,100.0%) 2,(1,100.0%) 2} * Non-linear torn systems: 2 {5 9,8 46} Notification: Performance of prepare postOptimizeDAE: time 0.002281/1.553, allocations: 1.145 MB / 0.9783 GB, free: 81.12 MB / 490.7 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0008132/1.554, allocations: 323.9 kB / 0.9786 GB, free: 80.8 MB / 490.7 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.008662/1.562, allocations: 5.23 MB / 0.9838 GB, free: 75.5 MB / 490.7 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.918e-05/1.562, allocations: 27.95 kB / 0.9838 GB, free: 75.48 MB / 490.7 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.333e-05/1.562, allocations: 7.172 kB / 0.9838 GB, free: 75.47 MB / 490.7 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.467e-05/1.562, allocations: 11.95 kB / 0.9838 GB, free: 75.46 MB / 490.7 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01545/1.578, allocations: 9.111 MB / 0.9927 GB, free: 66.27 MB / 490.7 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.127e-05/1.578, allocations: 0 / 0.9927 GB, free: 66.27 MB / 490.7 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001758/1.58, allocations: 387.7 kB / 0.9931 GB, free: 65.89 MB / 490.7 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.004154/1.584, allocations: 1.71 MB / 0.9947 GB, free: 64.17 MB / 490.7 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.000365/1.584, allocations: 127.9 kB / 0.9949 GB, free: 64.05 MB / 490.7 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01797/1.602, allocations: 14.15 MB / 1.009 GB, free: 49.63 MB / 490.7 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.837e-06/1.602, allocations: 3.938 kB / 1.009 GB, free: 49.63 MB / 490.7 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01136/1.614, allocations: 7.021 MB / 1.016 GB, free: 42.5 MB / 490.7 MB Notification: Performance of postOpt removeConstants (simulation): time 0.001594/1.615, allocations: 0.6973 MB / 1.016 GB, free: 41.78 MB / 490.7 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005382/1.616, allocations: 99.97 kB / 1.016 GB, free: 41.68 MB / 490.7 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002075/1.618, allocations: 227.7 kB / 1.017 GB, free: 41.46 MB / 490.7 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0005776/1.618, allocations: 214.4 kB / 1.017 GB, free: 41.25 MB / 490.7 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001898/1.619, allocations: 87.94 kB / 1.017 GB, free: 41.16 MB / 490.7 MB Notification: Performance of sorting global known variables: time 0.003053/1.622, allocations: 1.904 MB / 1.019 GB, free: 39.26 MB / 490.7 MB Notification: Performance of sort global known variables: time 1.41e-07/1.622, allocations: 0 / 1.019 GB, free: 39.26 MB / 490.7 MB Notification: Performance of remove unused functions: time 0.005036/1.627, allocations: 1.732 MB / 1.02 GB, free: 37.54 MB / 490.7 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 7 * Number of states: 34 (system.theta,turboGen1.generator.i_s[1],turboGen1.generator.i_s[2],turboGen1.generator.i_s[3],turboGen1.generator.i_rd[1],turboGen1.generator.i_rd[2],turboGen1.generator.i_rq[1],turboGen1.generator.i_rq[2],turboGen1.exciter.voltageReg.x_scaled[1],turboGen1.governor.speedReg.x_scaled[1],turboGen1.rotor.phi,turboGen1.rotor.w,turboGen2.generator.i_s[1],turboGen2.generator.i_s[2],turboGen2.generator.i_s[3],turboGen2.generator.i_rd[1],turboGen2.generator.i_rd[2],turboGen2.generator.i_rq[1],turboGen2.generator.i_rq[2],turboGen2.exciter.voltageReg.x_scaled[1],turboGen2.governor.speedReg.x_scaled[1],turboGen2.rotor.phi,turboGen2.rotor.w,turboGen3.generator.i_s[1],turboGen3.generator.i_s[2],turboGen3.generator.i_s[3],turboGen3.generator.i_rd[1],turboGen3.generator.i_rd[2],turboGen3.generator.i_rq[1],turboGen3.generator.i_rq[2],turboGen3.exciter.voltageReg.x_scaled[1],turboGen3.governor.speedReg.x_scaled[1],turboGen3.rotor.phi,turboGen3.rotor.w) * Number of discrete variables: 2 ($whenCondition1,system.initime) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (182): * Single equations (assignments): 179 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 1 * 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: 1 {(3,77.8%) 13} * Non-linear torn systems: 1 {14 67} Notification: Performance of Backend phase and start with SimCode phase: time 0.0005404/1.627, allocations: 207.6 kB / 1.021 GB, free: 37.33 MB / 490.7 MB Notification: Performance of simCode: created initialization part: time 0.01917/1.647, allocations: 12.23 MB / 1.033 GB, free: 24.69 MB / 490.7 MB Notification: Performance of simCode: created event and clocks part: time 1.163e-05/1.647, allocations: 4 kB / 1.033 GB, free: 24.69 MB / 490.7 MB Notification: Performance of simCode: created simulation system equations: time 0.00526/1.652, allocations: 2.897 MB / 1.035 GB, free: 21.77 MB / 490.7 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003333/1.655, allocations: 0.6343 MB / 1.036 GB, free: 21.13 MB / 490.7 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0163/1.672, allocations: 11.91 MB / 1.048 GB, free: 9.176 MB / 490.7 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00217/1.674, allocations: 2.676 MB / 1.05 GB, free: 6.469 MB / 490.7 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001126/1.675, allocations: 227.4 kB / 1.05 GB, free: 6.25 MB / 490.7 MB Notification: Performance of SimCode: time 1.373e-06/1.675, allocations: 4 kB / 1.05 GB, free: 6.246 MB / 490.7 MB Notification: Performance of Templates: time 0.5816/2.257, allocations: 218 MB / 1.263 GB, free: 168.4 MB / 0.5105 GB make -j1 -f PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine.makefile (rm -f PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine.pipe ; mkfifo PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine.pipe ; head -c 1048576 < PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine.pipe >> ../files/PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine.sim & ./PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine --alarm=480 > PowerSystems_cpp_PowerSystems.Examples.AC3ph.Generation.TieLine.pipe 2>&1)