Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:40:18 2012 Optimize a model with 58985 rows, 51302 columns and 227128 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 1.42s Presolved: 59209 rows, 51300 columns, 277682 nonzeros Variable types: 0 continuous, 51300 integer (51300 binary) Found heuristic solution: objective 226.0000000 Root relaxation: objective 2.000000e+00, 34528 iterations, 3.69 seconds Total elapsed time = 10.22s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 400 226.00000 2.00000 99.1% - 11s H 0 0 187.0000000 2.00000 98.9% - 11s H 0 0 4.0000000 2.00000 50.0% - 11s 0 0 2.66667 0 13219 4.00000 2.66667 33.3% - 47s H 0 0 3.0000000 2.66667 11.1% - 77s Cutting planes: Clique: 2 Zero half: 4 Explored 0 nodes (150013 simplex iterations) in 77.53 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%