Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:11:18 2012 Optimize a model with 2220 rows, 1406 columns and 7918 nonzeros Presolve removed 336 rows and 111 columns Presolve time: 0.04s Presolved: 1884 rows, 1295 columns, 6993 nonzeros Variable types: 0 continuous, 1295 integer (1295 binary) Found heuristic solution: objective 22.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 1893 iterations, 0.08 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 (1893 simplex iterations) in 0.12 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%