Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:28:44 2013 Optimize a model with 10140 rows, 11020 columns and 42010 nonzeros Presolve removed 30 rows and 20 columns Presolve time: 0.34s Presolved: 10110 rows, 11000 columns, 31980 nonzeros Variable types: 6010 continuous, 4990 integer (4990 binary) Root relaxation: objective 2.207062e+04, 3842 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 22070.6191 0 1 - 22070.6191 - - 0s 0 0 22237.3867 0 1 - 22237.3867 - - 0s 0 0 22261.3497 0 1 - 22261.3497 - - 0s 0 0 22261.3497 0 1 - 22261.3497 - - 0s 0 0 22264.0123 0 2 - 22264.0123 - - 1s 0 0 22271.0163 0 1 - 22271.0163 - - 1s 0 0 22271.0163 0 1 - 22271.0163 - - 1s 0 0 22271.0163 0 1 - 22271.0163 - - 1s 0 0 22271.0494 0 2 - 22271.0494 - - 1s H 0 0 22778.427469 22271.0494 2.23% - 1s 0 2 22271.6387 0 2 22778.4275 22271.6387 2.22% - 1s H 106 106 22386.546128 22295.1150 0.41% 17.8 4s * 110 107 103 22386.287053 22295.1150 0.41% 18.3 4s * 111 106 104 22386.154376 22295.1150 0.41% 19.2 4s * 113 106 105 22386.053759 22295.1150 0.41% 19.9 4s 172 163 22333.0188 58 2 22386.0538 22296.5926 0.40% 15.1 5s * 317 58 203 22333.292417 22296.5926 0.16% 10.2 6s * 318 51 203 22333.165576 22296.5926 0.16% 10.2 6s Cutting planes: Gomory: 1 Flow cover: 7 Explored 365 nodes (11872 simplex iterations) in 7.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.233316557625e+04, best bound 2.233236676103e+04, gap 0.0036%