Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:33:09 2012 Optimize a model with 10780 rows, 6006 columns and 38038 nonzeros Presolve removed 695 rows and 154 columns Presolve time: 0.19s Presolved: 10085 rows, 5852 columns, 36190 nonzeros Variable types: 0 continuous, 5852 integer (5852 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 3.000000e+00, 7941 iterations, 0.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 112 42.00000 3.00000 92.9% - 2s H 0 0 4.0000000 3.00000 25.0% - 2s H 0 0 3.0000000 3.00000 0.0% - 2s Explored 0 nodes (22239 simplex iterations) in 2.76 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%