Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:21 2012 Optimize a model with 2088 rows, 92 columns and 4176 nonzeros Presolve removed 1492 rows and 0 columns Presolve time: 0.06s Presolved: 596 rows, 92 columns, 3967 nonzeros Variable types: 0 continuous, 92 integer (92 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.328885e+01, 301 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.28885 0 87 7.00000 13.28885 89.8% - 0s H 0 0 9.0000000 13.28885 47.7% - 0s 0 0 12.92875 0 89 9.00000 12.92875 43.7% - 0s 0 0 12.85717 0 91 9.00000 12.85717 42.9% - 0s 0 0 12.80313 0 90 9.00000 12.80313 42.3% - 0s 0 0 12.77187 0 92 9.00000 12.77187 41.9% - 0s 0 0 12.74098 0 91 9.00000 12.74098 41.6% - 0s 0 0 12.74039 0 90 9.00000 12.74039 41.6% - 0s 0 0 12.74034 0 91 9.00000 12.74034 41.6% - 0s 0 2 12.74034 0 91 9.00000 12.74034 41.6% - 0s * 63 9 5 10.0000000 11.60419 16.0% 63.3 0s Cutting planes: Clique: 59 Explored 73 nodes (4755 simplex iterations) in 0.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%