Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:27:28 2012 Optimize a model with 977 rows, 139 columns and 1954 nonzeros Presolve removed 382 rows and 0 columns Presolve time: 0.01s Presolved: 595 rows, 139 columns, 1555 nonzeros Variable types: 0 continuous, 139 integer (139 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 4.502144e+01, 400 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45.02144 0 139 30.00000 45.02144 50.1% - 0s 0 0 44.55412 0 139 30.00000 44.55412 48.5% - 0s 0 0 44.42690 0 138 30.00000 44.42690 48.1% - 0s 0 0 44.30609 0 138 30.00000 44.30609 47.7% - 0s 0 0 44.20827 0 139 30.00000 44.20827 47.4% - 0s 0 0 43.94529 0 138 30.00000 43.94529 46.5% - 0s 0 0 43.81633 0 139 30.00000 43.81633 46.1% - 0s H 0 0 31.0000000 43.81633 41.3% - 0s 0 0 43.67558 0 138 31.00000 43.67558 40.9% - 0s 0 0 43.45297 0 139 31.00000 43.45297 40.2% - 0s 0 0 43.41514 0 139 31.00000 43.41514 40.0% - 0s 0 0 43.40997 0 139 31.00000 43.40997 40.0% - 0s 0 0 43.40997 0 139 31.00000 43.40997 40.0% - 0s 0 2 43.40974 0 139 31.00000 43.40974 40.0% - 0s * 42 31 14 33.0000000 43.20875 30.9% 48.7 0s * 61 35 13 34.0000000 43.01992 26.5% 43.3 0s H 357 113 35.0000000 40.85714 16.7% 43.3 0s 613 193 36.68750 15 137 35.00000 40.35860 15.3% 40.1 5s 685 239 cutoff 40 35.00000 40.35860 15.3% 50.4 10s 2927 479 36.05556 33 86 35.00000 38.08333 8.81% 39.9 15s Cutting planes: Clique: 7 Zero half: 100 Explored 4273 nodes (155771 simplex iterations) in 17.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%