Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:26:54 2012 Optimize a model with 7865 rows, 4830 columns and 28081 nonzeros Presolve removed 1037 rows and 2 columns Presolve time: 0.27s Presolved: 6897 rows, 4828 columns, 30091 nonzeros Variable types: 0 continuous, 4828 integer (4828 binary) Found heuristic solution: objective 69.0000000 Root relaxation: objective 3.000000e+00, 4480 iterations, 0.40 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 1s Explored 0 nodes (12893 simplex iterations) in 1.85 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%