Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:06:12 2012 Optimize a model with 44279 rows, 42230 columns and 174043 nonzeros Presolve removed 25 rows and 4717 columns Presolve time: 0.95s Presolved: 44254 rows, 37513 columns, 168896 nonzeros Variable types: 0 continuous, 37513 integer (37513 binary) Found heuristic solution: objective 205.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 409 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 336 3.00000 2.00000 33.3% - 1s Explored 0 nodes (766 simplex iterations) in 1.20 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%