Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:20:52 2012 Optimize a model with 12513 rows, 16770 columns and 53793 nonzeros Presolve removed 23 rows and 2967 columns Presolve time: 0.23s Presolved: 12490 rows, 13803 columns, 50826 nonzeros Variable types: 0 continuous, 13803 integer (13803 binary) Found heuristic solution: objective 45.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 11167 iterations, 0.54 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 96 3.00000 2.00000 33.3% - 1s 0 0 2.00000 0 230 3.00000 2.00000 33.3% - 5s 0 0 2.00000 0 323 3.00000 2.00000 33.3% - 16s 0 0 2.00000 0 334 3.00000 2.00000 33.3% - 25s 0 0 2.00000 0 266 3.00000 2.00000 33.3% - 33s 0 0 2.00000 0 96 3.00000 2.00000 33.3% - 42s 0 0 2.00000 0 206 3.00000 2.00000 33.3% - 50s 0 0 2.00000 0 200 3.00000 2.00000 33.3% - 60s 0 0 2.00000 0 263 3.00000 2.00000 33.3% - 67s 0 0 2.00000 0 263 3.00000 2.00000 33.3% - 72s 0 2 2.00000 0 263 3.00000 2.00000 33.3% - 80s 5 5 2.00000 1 301 3.00000 2.00000 33.3% 3906 94s 6 6 2.00000 1 200 3.00000 2.00000 33.3% 3255 106s 7 6 2.00000 1 208 3.00000 2.00000 33.3% 2790 122s 8 7 2.00000 1 401 3.00000 2.00000 33.3% 2441 160s 9 8 2.00000 1 401 3.00000 2.00000 33.3% 2170 169s 10 8 2.00000 1 401 3.00000 2.00000 33.3% 1953 171s 11 9 infeasible 11 3.00000 2.00000 33.3% 20301 190s 12 10 2.00000 11 126 3.00000 2.00000 33.3% 18730 196s Cutting planes: Gomory: 58 Zero half: 8 Explored 15 nodes (471691 simplex iterations) in 198.10 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%