Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:05 2012 Optimize a model with 1 rows, 40 columns and 40 nonzeros Model has 46 quadratic objective terms Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 47 rows, 83 columns, 175 nonzeros Variable types: 0 continuous, 83 integer (82 binary) Found heuristic solution: objective 11.0000000 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 11 11.00000 0.00000 100% - 0s 0 0 0.00000 0 8 11.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 7.00000 0.00000 100% - 0s 0 0 0.00000 0 6 7.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 2 0.00000 0 6 5.00000 0.00000 100% - 0s * 143 30 7 4.0000000 0.00000 100% 5.2 0s Cutting planes: Cover: 85 Explored 182 nodes (1723 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%