Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:22:36 2012 Optimize a model with 7539 rows, 4290 columns and 26583 nonzeros Presolve removed 847 rows and 2 columns Presolve time: 0.24s Presolved: 6757 rows, 4288 columns, 28522 nonzeros Variable types: 0 continuous, 4288 integer (4288 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 3.000000e+00, 5475 iterations, 0.63 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 64 65.00000 3.00000 95.4% - 3s H 0 0 3.0000000 3.00000 0.0% - 3s Explored 0 nodes (23878 simplex iterations) in 3.10 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%