Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:08:12 2012 Optimize a model with 10922 rows, 16256 columns and 48514 nonzeros Presolve removed 34 rows and 4318 columns Presolve time: 0.19s Presolved: 10888 rows, 11938 columns, 44196 nonzeros Variable types: 0 continuous, 11938 integer (11938 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 2.000000e+00, 10111 iterations, 0.53 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 120 42.00000 2.00000 95.2% - 2s H 0 0 3.0000000 2.00000 33.3% - 2s 0 0 2.00000 0 222 3.00000 2.00000 33.3% - 5s 0 0 2.00000 0 216 3.00000 2.00000 33.3% - 12s 0 0 2.00000 0 214 3.00000 2.00000 33.3% - 17s 0 0 2.00000 0 216 3.00000 2.00000 33.3% - 25s 0 0 2.00000 0 214 3.00000 2.00000 33.3% - 31s 0 0 2.00000 0 120 3.00000 2.00000 33.3% - 38s 0 0 2.00000 0 214 3.00000 2.00000 33.3% - 45s 0 0 2.00000 0 249 3.00000 2.00000 33.3% - 50s 0 0 2.00000 0 216 3.00000 2.00000 33.3% - 56s 0 0 2.00000 0 249 3.00000 2.00000 33.3% - 66s 0 0 2.00000 0 249 3.00000 2.00000 33.3% - 70s 0 2 2.00000 0 249 3.00000 2.00000 33.3% - 80s 5 5 2.00000 1 214 3.00000 2.00000 33.3% 3663 92s 6 6 2.00000 1 120 3.00000 2.00000 33.3% 3052 99s 7 6 2.00000 1 214 3.00000 2.00000 33.3% 2616 108s 8 7 2.00000 1 120 3.00000 2.00000 33.3% 2289 118s 9 8 2.00000 1 134 3.00000 2.00000 33.3% 2035 125s 10 8 2.00000 1 120 3.00000 2.00000 33.3% 1832 132s 11 9 2.00000 1 120 3.00000 2.00000 33.3% 1665 144s 12 10 2.00000 1 120 3.00000 2.00000 33.3% 1526 149s 13 10 2.00000 1 120 3.00000 2.00000 33.3% 1409 150s 14 11 infeasible 13 3.00000 2.00000 33.3% 18449 164s Cutting planes: Gomory: 16 Zero half: 3 Explored 16 nodes (538693 simplex iterations) in 164.94 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%