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 82 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 83 rows, 138 columns, 302 nonzeros Variable types: 0 continuous, 138 integer (137 binary) Found heuristic solution: objective 30.0000000 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 29 30.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 25.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 19.00000 0.00000 100% - 0s 0 0 0.00000 0 26 19.00000 0.00000 100% - 0s 0 0 0.00000 0 25 19.00000 0.00000 100% - 0s 0 0 0.00000 0 27 19.00000 0.00000 100% - 0s 0 0 0.00000 0 26 19.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 2 0.00000 0 16 14.00000 0.00000 100% - 0s H 12 12 13.0000000 0.00000 100% 2.9 0s H 31 31 12.0000000 0.00000 100% 2.5 0s * 294 115 13 11.0000000 1.00000 90.9% 8.9 0s * 296 102 12 10.0000000 1.00000 90.0% 8.9 0s Cutting planes: Cover: 156 Explored 554 nodes (11346 simplex iterations) in 0.19 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%