Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:13 2012 Optimize a model with 1 rows, 58 columns and 58 nonzeros Model has 78 quadratic objective terms Presolve removed 0 rows and 5 columns Presolve time: 0.00s Presolved: 79 rows, 131 columns, 287 nonzeros Variable types: 0 continuous, 131 integer (130 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 102 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 27 28.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.00000 0 37 25.00000 0.00000 100% - 0s 0 0 0.00000 0 20 25.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 18.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 14.00000 0.00000 100% - 0s 0 0 0.00000 0 22 14.00000 0.00000 100% - 0s 0 0 0.00000 0 22 14.00000 0.00000 100% - 0s 0 2 0.00000 0 22 14.00000 0.00000 100% - 0s H 182 127 13.0000000 0.00000 100% 6.8 0s H 188 119 12.0000000 1.00000 91.7% 7.2 0s * 254 129 13 11.0000000 1.00000 90.9% 8.8 0s Cutting planes: Cover: 148 MIR: 6 Zero half: 3 Explored 542 nodes (10023 simplex iterations) in 0.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%