Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:20:27 2012 Optimize a model with 6551 rows, 4032 columns and 23371 nonzeros Presolve removed 696 rows and 65 columns Presolve time: 0.19s Presolved: 5855 rows, 3967 columns, 21421 nonzeros Variable types: 0 continuous, 3967 integer (3967 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 3.000000e+00, 4549 iterations, 0.32 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 28 63.00000 3.00000 95.2% - 1s H 0 0 3.0000000 3.00000 0.0% - 1s Explored 0 nodes (14414 simplex iterations) in 1.39 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%