Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:58:53 2012 Optimize a model with 7848 rows, 11990 columns and 35098 nonzeros Presolve removed 242 rows and 2616 columns Presolve time: 0.16s Presolved: 7606 rows, 9374 columns, 31937 nonzeros Variable types: 0 continuous, 9374 integer (9374 binary) Found heuristic solution: objective 34.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 10044 iterations, 0.42 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 (10044 simplex iterations) in 0.59 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%