Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:09:17 2012 Optimize a model with 2278 rows, 1190 columns and 7888 nonzeros Presolve removed 614 rows and 68 columns Presolve time: 0.04s Presolved: 1664 rows, 1122 columns, 6324 nonzeros Variable types: 0 continuous, 1122 integer (1122 binary) Found heuristic solution: objective 20.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 1668 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (1668 simplex iterations) in 0.10 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%