Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:16:13 2012 Optimize a model with 4263 rows, 702 columns and 13362 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.07s Presolved: 4261 rows, 700 columns, 19000 nonzeros Variable types: 0 continuous, 700 integer (700 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 4.000000e+00, 4164 iterations, 0.24 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4.00000 0 423 26.00000 4.00000 84.6% - 0s 0 0 6.00000 0 79 26.00000 6.00000 76.9% - 1s H 0 0 14.0000000 6.00000 57.1% - 1s H 0 0 7.0000000 6.00000 14.3% - 1s 0 0 6.00000 0 85 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 35 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 96 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 63 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 90 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 43 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 59 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 71 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 66 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 66 7.00000 6.00000 14.3% - 1s 0 2 6.00000 0 58 7.00000 6.00000 14.3% - 1s Cutting planes: Clique: 1 Zero half: 33 Explored 18 nodes (13753 simplex iterations) in 1.82 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%