Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:19:35 2012 Optimize a model with 6099 rows, 3782 columns and 21775 nonzeros Presolve removed 673 rows and 2 columns Presolve time: 0.16s Presolved: 5487 rows, 3780 columns, 23671 nonzeros Variable types: 0 continuous, 3780 integer (3780 binary) Found heuristic solution: objective 61.0000000 Root relaxation: objective 3.000000e+00, 4175 iterations, 0.33 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 77 61.00000 3.00000 95.1% - 1s H 0 0 3.0000000 3.00000 0.0% - 1s Explored 0 nodes (15053 simplex iterations) in 1.53 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%