Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:29 2012 Optimize a model with 1 rows, 59 columns and 59 nonzeros Model has 85 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 86 rows, 142 columns, 312 nonzeros Variable types: 0 continuous, 142 integer (141 binary) Found heuristic solution: objective 30.0000000 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 31 30.00000 0.00000 100% - 0s 0 0 0.00000 0 26 30.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 24.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 23.00000 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 H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 13.00000 0.00000 100% - 0s 0 0 0.00000 0 22 13.00000 0.00000 100% - 0s 0 2 0.00000 0 22 13.00000 0.00000 100% - 0s H 122 69 12.0000000 0.00000 100% 4.8 0s H 243 103 11.0000000 0.83333 92.4% 8.1 0s * 386 48 6 10.0000000 5.00000 50.0% 20.4 0s Cutting planes: Cover: 166 Explored 438 nodes (9615 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%