Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:03:10 2012 Optimize a model with 11049 rows, 16256 columns and 48895 nonzeros Presolve removed 36 rows and 4572 columns Presolve time: 0.20s Presolved: 11013 rows, 11684 columns, 44323 nonzeros Variable types: 0 continuous, 11684 integer (11684 binary) Found heuristic solution: objective 42.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 11714 iterations, 0.87 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 136 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 325 3.00000 2.00000 33.3% - 7s 0 0 2.00000 0 228 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 253 3.00000 2.00000 33.3% - 20s 0 0 2.00000 0 136 3.00000 2.00000 33.3% - 25s 0 0 2.00000 0 230 3.00000 2.00000 33.3% - 31s 0 0 2.00000 0 230 3.00000 2.00000 33.3% - 37s 0 0 2.00000 0 253 3.00000 2.00000 33.3% - 43s 0 0 2.00000 0 253 3.00000 2.00000 33.3% - 46s 0 2 2.00000 0 253 3.00000 2.00000 33.3% - 53s 2 3 2.00000 1 253 3.00000 2.00000 33.3% 8193 56s 5 5 2.00000 1 136 3.00000 2.00000 33.3% 3277 68s 6 6 2.00000 1 136 3.00000 2.00000 33.3% 2731 78s 7 6 2.00000 1 140 3.00000 2.00000 33.3% 2341 92s Cutting planes: Gomory: 1 Zero half: 4 Explored 7 nodes (310088 simplex iterations) in 92.97 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%