Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:57:17 2012 Optimize a model with 7490 rows, 11556 columns and 33598 nonzeros Presolve removed 244 rows and 3210 columns Presolve time: 0.14s Presolved: 7246 rows, 8346 columns, 29853 nonzeros Variable types: 0 continuous, 8346 integer (8346 binary) Found heuristic solution: objective 37.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 7814 iterations, 0.30 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 (7814 simplex iterations) in 0.46 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%