Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:41:03 2012 Optimize a model with 10292 rows, 15500 columns and 45880 nonzeros Presolve removed 30 rows and 3720 columns Presolve time: 0.17s Presolved: 10262 rows, 11780 columns, 42160 nonzeros Variable types: 0 continuous, 11780 integer (11780 binary) Found heuristic solution: objective 41.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 8246 iterations, 0.24 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 60 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 211 3.00000 2.00000 33.3% - 2s 0 0 2.00000 0 258 3.00000 2.00000 33.3% - 8s 0 0 2.00000 0 223 3.00000 2.00000 33.3% - 14s 0 0 2.00000 0 152 3.00000 2.00000 33.3% - 21s 0 0 2.00000 0 160 3.00000 2.00000 33.3% - 26s 0 0 2.00000 0 152 3.00000 2.00000 33.3% - 32s 0 0 2.00000 0 160 3.00000 2.00000 33.3% - 37s 0 0 2.00000 0 152 3.00000 2.00000 33.3% - 41s 0 0 2.00000 0 160 3.00000 2.00000 33.3% - 45s 0 0 2.00000 0 160 3.00000 2.00000 33.3% - 46s 0 2 2.00000 0 160 3.00000 2.00000 33.3% - 50s 5 5 2.00000 1 160 3.00000 2.00000 33.3% 2431 58s 6 6 2.00000 1 252 3.00000 2.00000 33.3% 2026 65s 7 6 2.00000 1 60 3.00000 2.00000 33.3% 1737 74s 8 7 2.00000 1 64 3.00000 2.00000 33.3% 1520 81s 9 8 2.00000 1 124 3.00000 2.00000 33.3% 1351 91s Cutting planes: Zero half: 53 Explored 14 nodes (451419 simplex iterations) in 94.71 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%