Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:08:47 2012 Optimize a model with 1599 rows, 1056 columns and 5694 nonzeros Presolve removed 228 rows and 66 columns Presolve time: 0.08s Presolved: 1371 rows, 990 columns, 5000 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.000000e+00, 1096 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 18 32.00000 3.00000 90.6% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (3256 simplex iterations) in 0.19 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%