Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:27 2012 Optimize a model with 1 rows, 29 columns and 29 nonzeros Model has 46 quadratic objective terms Presolve time: 0.00s Presolved: 47 rows, 75 columns, 167 nonzeros Variable types: 0 continuous, 75 integer (75 binary) Found heuristic solution: objective 19.0000000 Found heuristic solution: objective 12.0000000 Root relaxation: objective 0.000000e+00, 61 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 16 12.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 32 10.00000 0.00000 100% - 0s 0 0 0.00000 0 14 10.00000 0.00000 100% - 0s 0 0 0.00000 0 17 10.00000 0.00000 100% - 0s 0 0 0.00000 0 17 10.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 17 9.00000 0.00000 100% - 0s H 78 21 8.0000000 1.00000 87.5% 7.5 0s * 91 14 6 7.0000000 1.80000 74.3% 8.2 0s Cutting planes: Cover: 83 MIR: 2 Zero half: 2 Explored 108 nodes (1208 simplex iterations) in 0.02 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%