Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:55:29 2012 Optimize a model with 57639 rows, 48620 columns and 220438 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 1.37s Presolved: 57857 rows, 48618 columns, 268314 nonzeros Variable types: 0 continuous, 48618 integer (48618 binary) Found heuristic solution: objective 220.0000000 Root relaxation: objective 2.000000e+00, 33943 iterations, 3.59 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 388 220.00000 2.00000 99.1% - 10s H 0 0 211.0000000 2.00000 99.1% - 10s H 0 0 4.0000000 2.00000 50.0% - 10s 0 0 2.66667 0 8042 4.00000 2.66667 33.3% - 45s 0 0 2.66667 0 13921 4.00000 2.66667 33.3% - 83s 0 0 2.66667 0 246 4.00000 2.66667 33.3% - 200s H 0 0 3.0000000 2.66667 11.1% - 200s Cutting planes: Clique: 2 Zero half: 4 Explored 0 nodes (323399 simplex iterations) in 200.85 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%