Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:37:28 2012 Optimize a model with 7809 rows, 5112 columns and 28185 nonzeros Presolve removed 428 rows and 2 columns Presolve time: 0.28s Presolved: 7452 rows, 5110 columns, 31953 nonzeros Variable types: 0 continuous, 5110 integer (5110 binary) Found heuristic solution: objective 71.0000000 Root relaxation: objective 3.000000e+00, 4005 iterations, 0.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 28 71.00000 3.00000 95.8% - 2s H 0 0 3.0000000 3.00000 0.0% - 2s Explored 0 nodes (18965 simplex iterations) in 2.13 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%