Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:32 2012 Optimize a model with 925 rows, 62 columns and 1850 nonzeros Presolve removed 641 rows and 0 columns Presolve time: 0.01s Presolved: 284 rows, 62 columns, 1625 nonzeros Variable types: 0 continuous, 62 integer (62 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.084872e+01, 135 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.84872 0 55 7.00000 10.84872 55.0% - 0s H 0 0 8.0000000 10.84872 35.6% - 0s 0 0 10.45037 0 58 8.00000 10.45037 30.6% - 0s H 0 0 9.0000000 10.45037 16.1% - 0s 0 0 10.36654 0 58 9.00000 10.36654 15.2% - 0s 0 0 10.33168 0 59 9.00000 10.33168 14.8% - 0s 0 0 10.30868 0 59 9.00000 10.30868 14.5% - 0s 0 0 10.30665 0 59 9.00000 10.30665 14.5% - 0s 0 0 10.30362 0 58 9.00000 10.30362 14.5% - 0s 0 0 10.30142 0 59 9.00000 10.30142 14.5% - 0s 0 2 10.29973 0 59 9.00000 10.29973 14.4% - 0s Cutting planes: Clique: 25 Zero half: 5 Explored 7 nodes (441 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%