Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:25:25 2012 Optimize a model with 7683 rows, 4692 columns and 27402 nonzeros Presolve removed 750 rows and 2 columns Presolve time: 0.27s Presolved: 7001 rows, 4690 columns, 29986 nonzeros Variable types: 0 continuous, 4690 integer (4690 binary) Found heuristic solution: objective 68.0000000 Root relaxation: objective 3.000000e+00, 5781 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 54 68.00000 3.00000 95.6% - 1s H 0 0 31.0000000 3.00000 90.3% - 1s H 0 0 4.0000000 3.00000 25.0% - 1s H 0 0 3.0000000 3.00000 0.0% - 1s Explored 0 nodes (15748 simplex iterations) in 1.99 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%