Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:20:47 2012 Optimize a model with 10800 rows, 18360 columns and 50220 nonzeros Presolve removed 314 rows and 5940 columns Presolve time: 0.20s Presolved: 10486 rows, 12420 columns, 43605 nonzeros Variable types: 0 continuous, 12420 integer (12420 binary) Found heuristic solution: objective 29.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 12399 iterations, 0.61 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (12399 simplex iterations) in 0.84 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%