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 48 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 49 rows, 88 columns, 184 nonzeros Variable types: 0 continuous, 88 integer (87 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 0.000000e+00, 68 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 17 17.00000 0.00000 100% - 0s 0 0 0.00000 0 16 17.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 12.00000 0.00000 100% - 0s 0 0 0.00000 0 12 12.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 12 8.00000 0.00000 100% - 0s H 47 24 7.0000000 0.00000 100% 3.8 0s H 50 18 5.0000000 0.00000 100% 4.7 0s * 96 27 9 4.0000000 0.00000 100% 5.9 0s Cutting planes: Cover: 87 Explored 129 nodes (1409 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%