Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:20 2012 Optimize a model with 372 rows, 117 columns and 744 nonzeros Presolve removed 81 rows and 8 columns Presolve time: 0.00s Presolved: 291 rows, 109 columns, 618 nonzeros Variable types: 0 continuous, 109 integer (109 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 5.250000e+01, 131 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 52.50000 0 97 43.00000 52.50000 22.1% - 0s 0 0 51.00000 0 94 43.00000 51.00000 18.6% - 0s 0 0 50.08824 0 106 43.00000 50.08824 16.5% - 0s 0 0 49.69231 0 108 43.00000 49.69231 15.6% - 0s 0 0 48.91017 0 109 43.00000 48.91017 13.7% - 0s 0 0 48.62500 0 108 43.00000 48.62500 13.1% - 0s 0 0 48.41667 0 109 43.00000 48.41667 12.6% - 0s 0 0 48.16105 0 107 43.00000 48.16105 12.0% - 0s 0 0 47.92857 0 107 43.00000 47.92857 11.5% - 0s 0 0 47.79866 0 105 43.00000 47.79866 11.2% - 0s 0 0 47.70843 0 109 43.00000 47.70843 10.9% - 0s 0 0 47.67468 0 109 43.00000 47.67468 10.9% - 0s 0 0 47.67468 0 109 43.00000 47.67468 10.9% - 0s 0 2 47.67337 0 108 43.00000 47.67337 10.9% - 0s H 5 5 46.0000000 47.67280 3.64% 32.0 0s Cutting planes: Gomory: 2 Zero half: 65 Explored 15 nodes (1170 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%