Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:33 2012 Optimize a model with 942 rows, 62 columns and 1884 nonzeros Presolve removed 658 rows and 0 columns Presolve time: 0.02s Presolved: 284 rows, 62 columns, 1638 nonzeros Variable types: 0 continuous, 62 integer (62 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.077700e+01, 141 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.77700 0 58 6.00000 10.77700 79.6% - 0s H 0 0 7.0000000 10.77700 54.0% - 0s 0 0 10.45936 0 62 7.00000 10.45936 49.4% - 0s H 0 0 8.0000000 10.45936 30.7% - 0s 0 0 10.35723 0 62 8.00000 10.35723 29.5% - 0s 0 0 10.33313 0 61 8.00000 10.33313 29.2% - 0s 0 0 10.31893 0 62 8.00000 10.31893 29.0% - 0s 0 0 10.31161 0 61 8.00000 10.31161 28.9% - 0s 0 0 10.30958 0 62 8.00000 10.30958 28.9% - 0s 0 2 10.30849 0 62 8.00000 10.30849 28.9% - 0s Cutting planes: Clique: 27 Zero half: 7 Explored 23 nodes (1062 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%