Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:18:28 2012 Optimize a model with 6135 rows, 3540 columns and 21651 nonzeros Presolve removed 297 rows and 2 columns Presolve time: 0.17s Presolved: 5897 rows, 3538 columns, 24226 nonzeros Variable types: 0 continuous, 3538 integer (3538 binary) Found heuristic solution: objective 59.0000000 Root relaxation: objective 3.000000e+00, 4239 iterations, 0.36 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 46 59.00000 3.00000 94.9% - 0s H 0 0 4.0000000 3.00000 25.0% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (9963 simplex iterations) in 0.99 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%