Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:24:46 2012 Optimize a model with 7967 rows, 1056 columns and 24798 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.10s Presolved: 7965 rows, 1054 columns, 27451 nonzeros Variable types: 0 continuous, 1054 integer (1054 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 3.428571e+00, 6849 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 0 876 32.00000 3.42857 89.3% - 1s H 0 0 29.0000000 3.42857 88.2% - 1s 0 0 6.00000 0 87 29.00000 6.00000 79.3% - 2s H 0 0 10.0000000 6.00000 40.0% - 2s 0 0 6.00000 0 131 10.00000 6.00000 40.0% - 2s H 0 0 9.0000000 6.00000 33.3% - 2s 0 0 6.00000 0 51 9.00000 6.00000 33.3% - 2s 0 0 6.00000 0 42 9.00000 6.00000 33.3% - 3s H 0 0 8.0000000 6.00000 25.0% - 3s 0 0 6.00000 0 132 8.00000 6.00000 25.0% - 3s H 0 0 7.0000000 6.00000 14.3% - 3s 0 0 6.00000 0 61 7.00000 6.00000 14.3% - 3s 0 2 6.00000 0 61 7.00000 6.00000 14.3% - 3s 11 11 6.00000 16 119 7.00000 6.00000 14.3% 488 5s Cutting planes: Gomory: 3 Clique: 41 Zero half: 18 Explored 29 nodes (27449 simplex iterations) in 5.43 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%