Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:25:58 2012 Optimize a model with 7967 rows, 1056 columns and 24798 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.09s Presolved: 7997 rows, 1054 columns, 28475 nonzeros Variable types: 0 continuous, 1054 integer (1054 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.428571e+00, 7025 iterations, 0.51 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.42857 0 881 32.00000 3.42857 89.3% - 1s H 0 0 20.0000000 3.42857 82.9% - 1s 0 0 6.00000 0 101 20.00000 6.00000 70.0% - 2s H 0 0 16.0000000 6.00000 62.5% - 2s H 0 0 8.0000000 6.00000 25.0% - 2s 0 0 6.00000 0 68 8.00000 6.00000 25.0% - 2s 0 0 6.00000 0 22 8.00000 6.00000 25.0% - 2s 0 0 6.00000 0 127 8.00000 6.00000 25.0% - 2s 0 0 6.00000 0 57 8.00000 6.00000 25.0% - 2s 0 0 6.00000 0 45 8.00000 6.00000 25.0% - 2s H 0 0 7.0000000 6.00000 14.3% - 2s 0 0 6.00000 0 61 7.00000 6.00000 14.3% - 2s 0 2 6.00000 0 22 7.00000 6.00000 14.3% - 3s Cutting planes: Gomory: 2 Clique: 9 Zero half: 20 Explored 29 nodes (28049 simplex iterations) in 4.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%