Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:11:00 2012 Optimize a model with 12064 rows, 16256 columns and 51814 nonzeros Presolve removed 27 rows and 3177 columns Presolve time: 0.21s Presolved: 12037 rows, 13079 columns, 48449 nonzeros Variable types: 0 continuous, 13079 integer (13079 binary) Found heuristic solution: objective 127.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 206 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 126 3.00000 2.00000 33.3% - 0s Explored 0 nodes (365 simplex iterations) in 0.28 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%