Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:23:31 2012 Optimize a model with 249 rows, 195 columns and 815 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 249 rows, 193 columns, 813 nonzeros Variable types: 0 continuous, 193 integer (192 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 101 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 68 51.00000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s 0 0 0.32856 0 70 44.00000 0.32856 99.3% - 0s H 0 0 37.0000000 0.32856 99.1% - 0s 0 0 0.94429 0 72 37.00000 0.94429 97.4% - 0s H 0 0 36.0000000 0.94429 97.4% - 0s 0 0 0.94773 0 73 36.00000 0.94773 97.4% - 0s 0 0 0.94773 0 73 36.00000 0.94773 97.4% - 0s H 0 0 35.0000000 0.94773 97.3% - 0s H 0 0 33.0000000 0.94773 97.1% - 0s H 0 0 31.0000000 0.94773 96.9% - 0s 0 2 0.95279 0 73 31.00000 0.95279 96.9% - 0s * 23 23 15 21.0000000 3.52940 83.2% 29.5 0s * 34 22 19 20.0000000 3.52940 82.4% 26.1 0s * 36 19 17 19.0000000 3.52940 81.4% 24.9 0s * 96 50 13 18.0000000 5.80451 67.8% 24.4 0s * 152 65 14 17.0000000 7.64444 55.0% 23.0 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 458 nodes (9277 simplex iterations) in 0.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%