Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:54 2012 Optimize a model with 1 rows, 38 columns and 38 nonzeros Model has 44 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 45 rows, 80 columns, 168 nonzeros Variable types: 0 continuous, 80 integer (79 binary) Found heuristic solution: objective 16.0000000 Root relaxation: objective 0.000000e+00, 57 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 15 16.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 11.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 10.00000 0.00000 100% - 0s 0 0 0.00000 0 10 10.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 2 0.00000 0 10 6.00000 0.00000 100% - 0s H 98 28 5.0000000 0.50000 90.0% 6.5 0s Cutting planes: Cover: 76 Explored 160 nodes (1312 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%