Gurobi 5.0.1 (linux64) logging started Sat Jan 26 21:34:10 2013 Optimize a model with 30 rows, 100 columns and 3000 nonzeros Presolve time: 0.01s Presolved: 30 rows, 100 columns, 3000 nonzeros Variable types: 0 continuous, 100 integer (100 binary) Found heuristic solution: objective 58007.000000 Root relaxation: objective 5.955071e+04, 50 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59550.7087 0 22 58007.0000 59550.7087 2.66% - 0s H 0 0 58648.000000 59550.7087 1.54% - 0s 0 0 59541.5700 0 22 58648.0000 59541.5700 1.52% - 0s H 0 0 58832.000000 59541.5700 1.21% - 0s 0 0 59529.7711 0 23 58832.0000 59529.7711 1.19% - 0s 0 0 59529.4504 0 22 58832.0000 59529.4504 1.19% - 0s 0 2 59526.5227 0 22 58832.0000 59526.5227 1.18% - 0s H 120 91 58941.000000 59510.1032 0.97% 5.3 0s H 2333 1216 58981.000000 59428.7988 0.76% 5.9 0s H 3456 1895 59002.000000 59406.3003 0.69% 5.9 0s H 3670 1947 59030.000000 59403.0161 0.63% 5.9 0s H 8725 4342 59064.000000 59351.5330 0.49% 6.0 1s 40804 13640 59226.8905 28 12 59064.0000 59258.3603 0.33% 6.1 6s 72039 17916 59073.9952 27 12 59064.0000 59222.0155 0.27% 6.0 10s 121699 18816 59143.2358 30 11 59064.0000 59183.6112 0.20% 5.8 15s 174779 11371 cutoff 35 59064.0000 59141.5920 0.13% 5.7 20s Cutting planes: Gomory: 3 Explored 198574 nodes (1103979 simplex iterations) in 22.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.906400000000e+04, best bound 5.906900000000e+04, gap 0.0085%