Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:34:05 2012 Optimize a model with 13028 rows, 16770 columns and 55210 nonzeros Presolve removed 284 rows and 3098 columns Presolve time: 0.25s Presolved: 12744 rows, 13672 columns, 51271 nonzeros Variable types: 0 continuous, 13672 integer (13672 binary) Found heuristic solution: objective 129.0000000 Root relaxation: objective 3.000000e+00, 8296 iterations, 0.56 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 110 129.00000 3.00000 97.7% - 4s H 0 0 3.0000000 3.00000 0.0% - 4s Explored 0 nodes (27445 simplex iterations) in 4.12 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%