Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:57 2012 Optimize a model with 1 rows, 47 columns and 47 nonzeros Model has 57 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 58 rows, 102 columns, 216 nonzeros Variable types: 0 continuous, 102 integer (101 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 0.000000e+00, 80 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 19 21.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 17.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 12.00000 0.00000 100% - 0s 0 0 0.00000 0 13 12.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 2 0.00000 0 11 10.00000 0.00000 100% - 0s H 22 22 9.0000000 0.00000 100% 1.8 0s H 53 32 7.0000000 0.00000 100% 2.2 0s H 58 33 6.0000000 0.00000 100% 2.1 0s Cutting planes: Cover: 107 Explored 192 nodes (2704 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%