Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:27:29 2012 Optimize a model with 8679 rows, 4970 columns and 30658 nonzeros Presolve removed 1193 rows and 72 columns Presolve time: 0.31s Presolved: 7486 rows, 4898 columns, 27434 nonzeros Variable types: 0 continuous, 4898 integer (4898 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 3.000000e+00, 5410 iterations, 0.50 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% - 3s Explored 0 nodes (20785 simplex iterations) in 3.00 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%