Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:18 2012 Optimize a model with 1 rows, 42 columns and 42 nonzeros Model has 49 quadratic objective terms Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 50 rows, 88 columns, 186 nonzeros Variable types: 0 continuous, 88 integer (87 binary) Found heuristic solution: objective 18.0000000 Root relaxation: objective 0.000000e+00, 67 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 18 18.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 14.00000 0.00000 100% - 0s 0 0 0.00000 0 13 14.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 2 0.00000 0 13 11.00000 0.00000 100% - 0s H 84 37 8.0000000 0.00000 100% 3.1 0s H 86 34 6.0000000 0.00000 100% 3.1 0s H 152 33 5.0000000 0.00000 100% 4.1 0s Cutting planes: Cover: 90 Explored 200 nodes (1816 simplex iterations) in 0.03 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%