Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:19:32 2012 Optimize a model with 6648 rows, 3782 columns and 23422 nonzeros Presolve removed 1161 rows and 2 columns Presolve time: 0.19s Presolved: 5548 rows, 3780 columns, 24157 nonzeros Variable types: 0 continuous, 3780 integer (3780 binary) Found heuristic solution: objective 61.0000000 Root relaxation: objective 3.000000e+00, 4348 iterations, 0.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 75 61.00000 3.00000 95.1% - 1s H 0 0 3.0000000 3.00000 0.0% - 1s Explored 0 nodes (14707 simplex iterations) in 1.63 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%