Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:10:07 2012 Optimize a model with 2449 rows, 1260 columns and 8433 nonzeros Presolve removed 493 rows and 37 columns Presolve time: 0.10s Presolved: 1956 rows, 1223 columns, 7166 nonzeros Variable types: 0 continuous, 1223 integer (1223 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 3.000000e+00, 1600 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 21 35.00000 3.00000 91.4% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (4746 simplex iterations) in 0.32 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%