Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:51:26 2012 Optimize a model with 6449 rows, 930 columns and 20128 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.09s Presolved: 6477 rows, 928 columns, 24965 nonzeros Variable types: 0 continuous, 928 integer (928 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.555556e+00, 8234 iterations, 0.55 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.55556 0 739 30.00000 3.55556 88.1% - 1s H 0 0 29.0000000 3.55556 87.7% - 1s 0 0 6.00000 0 116 29.00000 6.00000 79.3% - 2s H 0 0 9.0000000 6.00000 33.3% - 2s 0 0 6.00000 0 121 9.00000 6.00000 33.3% - 2s H 0 0 8.0000000 6.00000 25.0% - 2s 0 0 6.00000 0 69 8.00000 6.00000 25.0% - 3s H 0 0 7.0000000 6.00000 14.3% - 3s 0 0 6.00000 0 68 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 57 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 129 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 71 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 97 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 104 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 102 7.00000 6.00000 14.3% - 3s 0 2 6.00000 0 99 7.00000 6.00000 14.3% - 3s Cutting planes: Clique: 16 Zero half: 21 Explored 6 nodes (24037 simplex iterations) in 4.05 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%