Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:31:19 2012 Optimize a model with 11352 rows, 16770 columns and 50310 nonzeros Presolve removed 31 rows and 3999 columns Presolve time: 0.20s Presolved: 11321 rows, 12771 columns, 46311 nonzeros Variable types: 0 continuous, 12771 integer (12771 binary) Found heuristic solution: objective 43.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 12176 iterations, 1.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 116 3.00000 2.00000 33.3% - 3s 0 0 2.00000 0 226 3.00000 2.00000 33.3% - 5s 0 0 2.00000 0 259 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 218 3.00000 2.00000 33.3% - 22s 0 0 2.00000 0 216 3.00000 2.00000 33.3% - 29s 0 0 2.00000 0 257 3.00000 2.00000 33.3% - 40s 0 0 2.00000 0 220 3.00000 2.00000 33.3% - 46s 0 0 2.00000 0 212 3.00000 2.00000 33.3% - 54s 0 0 2.00000 0 257 3.00000 2.00000 33.3% - 62s 0 0 2.00000 0 257 3.00000 2.00000 33.3% - 68s 0 0 2.00000 0 257 3.00000 2.00000 33.3% - 71s 0 2 2.00000 0 257 3.00000 2.00000 33.3% - 79s 2 3 2.00000 1 257 3.00000 2.00000 33.3% 12281 81s 5 5 2.00000 1 116 3.00000 2.00000 33.3% 4912 92s 6 6 2.00000 1 218 3.00000 2.00000 33.3% 4094 103s 7 6 2.00000 1 128 3.00000 2.00000 33.3% 3509 113s 8 7 2.00000 1 116 3.00000 2.00000 33.3% 3070 124s 9 8 2.00000 1 116 3.00000 2.00000 33.3% 2729 135s 10 8 2.00000 1 116 3.00000 2.00000 33.3% 2456 149s 11 9 2.00000 1 116 3.00000 2.00000 33.3% 2233 151s 14 9 infeasible 15 3.00000 3.00000 0.0% 19067 155s Cutting planes: Gomory: 6 Zero half: 8 Explored 15 nodes (543662 simplex iterations) in 155.45 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%