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 41 quadratic objective terms Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 42 rows, 76 columns, 158 nonzeros Variable types: 0 continuous, 76 integer (75 binary) Found heuristic solution: objective 13.0000000 Root relaxation: objective 0.000000e+00, 55 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 12 13.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 12.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 11 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 9 7.00000 0.00000 100% - 0s * 18 18 12 6.0000000 0.00000 100% 1.8 0s * 127 51 9 5.0000000 0.00000 100% 4.6 0s Cutting planes: Cover: 78 MIR: 3 Zero half: 2 Explored 194 nodes (1830 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%