Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:47:24 2012 Optimize a model with 6137 rows, 9900 columns and 27817 nonzeros Presolve removed 426 rows and 2774 columns Presolve time: 0.15s Presolved: 5711 rows, 7126 columns, 23939 nonzeros Variable types: 0 continuous, 7126 integer (7126 binary) Found heuristic solution: objective 99.0000000 Root relaxation: objective 3.000000e+00, 4492 iterations, 0.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 125 99.00000 3.00000 97.0% - 1s H 0 0 3.0000000 3.00000 0.0% - 1s Explored 0 nodes (12107 simplex iterations) in 1.41 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%