Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:54 2012 Optimize a model with 251 rows, 282 columns and 907 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 251 rows, 256 columns, 881 nonzeros Variable types: 0 continuous, 256 integer (255 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 0.000000e+00, 173 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 99 35.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 99 16.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 101 14.00000 0.00000 100% - 0s 0 0 0.00000 0 101 14.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 101 7.00000 0.00000 100% - 0s * 8 8 7 3.0000000 0.56757 81.1% 56.0 0s Cutting planes: Gomory: 1 Explored 21 nodes (1494 simplex iterations) in 0.13 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%