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 85 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 86 rows, 142 columns, 312 nonzeros Variable types: 0 continuous, 142 integer (141 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 112 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 28 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 27 25.00000 0.00000 100% - 0s 0 0 0.00000 0 18 25.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 17.00000 0.00000 100% - 0s 0 0 0.00000 0 20 17.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 2 0.00000 0 20 15.00000 0.00000 100% - 0s H 176 98 12.0000000 0.00000 100% 6.2 0s * 339 120 11 11.0000000 2.00000 81.8% 10.6 0s * 379 91 10 10.0000000 3.00000 70.0% 12.5 0s Cutting planes: Gomory: 1 Cover: 158 MIR: 3 Zero half: 1 Explored 497 nodes (9357 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%