Gurobi 5.0.1 (linux64) logging started Wed Dec 26 10:27:22 2012 Optimize a model with 1762 rows, 1681 columns and 10892 nonzeros Presolve removed 230 rows and 364 columns Presolve time: 0.07s Presolved: 1532 rows, 1317 columns, 19420 nonzeros Variable types: 40 continuous, 1277 integer (1277 binary) Root relaxation: objective 2.407048e+02, 218 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 240.70477 0 77 - 240.70477 - - 0s 0 0 253.08006 0 94 - 253.08006 - - 0s 0 0 257.83972 0 87 - 257.83972 - - 0s 0 0 258.10448 0 94 - 258.10448 - - 0s 0 0 258.87500 0 93 - 258.87500 - - 0s 0 0 258.91667 0 110 - 258.91667 - - 0s 0 0 258.91667 0 86 - 258.91667 - - 0s 0 0 258.91667 0 92 - 258.91667 - - 0s 0 0 258.91667 0 92 - 258.91667 - - 0s H 0 0 328.0000000 258.91667 21.1% - 0s H 0 0 310.0000000 258.91667 16.5% - 1s 0 2 260.52381 0 88 310.00000 260.52381 16.0% - 1s H 28 23 306.0000000 268.50000 12.3% 17.1 1s H 55 24 290.0000000 269.00000 7.24% 16.9 1s H 163 90 288.0000000 269.50000 6.42% 12.6 1s H 244 85 283.0000000 272.66667 3.65% 12.7 1s H 433 89 279.0000000 273.50000 1.97% 12.3 2s Cutting planes: Learned: 2 Gomory: 5 Cover: 27 Implied bound: 6 Clique: 5 MIR: 46 GUB cover: 11 Zero half: 6 Mod-K: 1 Explored 1141 nodes (11497 simplex iterations) in 2.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.790000000000e+02, best bound 2.790000000000e+02, gap 0.0%