Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:38:47 2012 Optimize a model with 2029 rows, 4970 columns and 10708 nonzeros Presolve removed 38 rows and 2522 columns Presolve time: 0.11s Presolved: 1991 rows, 2448 columns, 8130 nonzeros Variable types: 0 continuous, 2448 integer (2448 binary) Found heuristic solution: objective 70.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 61 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 28 3.00000 2.00000 33.3% - 0s Explored 0 nodes (108 simplex iterations) in 0.12 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%