Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:35:44 2012 Optimize a model with 339 rows, 247 columns and 1092 nonzeros Presolve time: 0.00s Presolved: 339 rows, 247 columns, 1092 nonzeros Variable types: 0 continuous, 247 integer (247 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 0.000000e+00, 131 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 78 70.00000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s 0 0 0.61111 0 80 49.00000 0.61111 98.8% - 0s H 0 0 48.0000000 0.61111 98.7% - 0s 0 0 0.86111 0 81 48.00000 0.86111 98.2% - 0s H 0 0 46.0000000 0.86111 98.1% - 0s 0 0 0.86111 0 80 46.00000 0.86111 98.1% - 0s 0 0 0.86111 0 80 46.00000 0.86111 98.1% - 0s 0 0 0.86111 0 80 46.00000 0.86111 98.1% - 0s 0 2 0.86111 0 80 46.00000 0.86111 98.1% - 0s * 33 33 21 40.0000000 4.03646 89.9% 30.3 0s * 68 57 25 39.0000000 4.12207 89.4% 25.0 0s * 101 68 17 38.0000000 6.38137 83.2% 26.0 0s * 138 86 18 33.0000000 6.38272 80.7% 27.5 0s Explored 2997 nodes (69053 simplex iterations) in 2.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%