Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:22:33 2012 Optimize a model with 3989 rows, 1806 columns and 13564 nonzeros Presolve removed 800 rows and 2 columns Presolve time: 0.11s Presolved: 3189 rows, 1804 columns, 11480 nonzeros Variable types: 0 continuous, 1804 integer (1804 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 3.000000e+00, 2466 iterations, 0.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 331 42.00000 3.00000 92.9% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (6646 simplex iterations) in 0.76 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%