Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:44 2012 Optimize a model with 1122 rows, 67 columns and 2244 nonzeros Presolve removed 794 rows and 0 columns Presolve time: 0.02s Presolved: 328 rows, 67 columns, 1993 nonzeros Variable types: 0 continuous, 67 integer (67 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 1.078314e+01, 189 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.78314 0 59 5.00000 10.78314 116% - 0s H 0 0 6.0000000 10.78314 79.7% - 0s H 0 0 7.0000000 10.78314 54.0% - 0s 0 0 10.48802 0 64 7.00000 10.48802 49.8% - 0s 0 0 10.36661 0 65 7.00000 10.36661 48.1% - 0s 0 0 10.32178 0 65 7.00000 10.32178 47.5% - 0s 0 0 10.30056 0 65 7.00000 10.30056 47.2% - 0s H 0 0 8.0000000 10.30056 28.8% - 0s 0 0 10.29394 0 65 8.00000 10.29394 28.7% - 0s 0 0 10.29051 0 65 8.00000 10.29051 28.6% - 0s 0 2 10.29031 0 65 8.00000 10.29031 28.6% - 0s Cutting planes: Clique: 27 Zero half: 10 Explored 21 nodes (1318 simplex iterations) in 0.18 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%