Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:18:41 2012 Optimize a model with 3156 rows, 1722 columns and 10986 nonzeros Presolve removed 782 rows and 43 columns Presolve time: 0.10s Presolved: 2374 rows, 1679 columns, 8984 nonzeros Variable types: 0 continuous, 1679 integer (1679 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 3.000000e+00, 2083 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 57 41.00000 3.00000 92.7% - 0s H 0 0 27.0000000 3.00000 88.9% - 0s H 0 0 4.0000000 3.00000 25.0% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (7137 simplex iterations) in 0.65 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%