Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:15:41 2012 Optimize a model with 3815 rows, 2862 columns and 14043 nonzeros Presolve removed 214 rows and 2 columns Presolve time: 0.11s Presolved: 3654 rows, 2860 columns, 16186 nonzeros Variable types: 0 continuous, 2860 integer (2860 binary) Found heuristic solution: objective 53.0000000 Root relaxation: objective 3.000000e+00, 3306 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 32 53.00000 3.00000 94.3% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (9626 simplex iterations) in 0.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%