Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:22:09 2012 Optimize a model with 1 rows, 132 columns and 132 nonzeros Model has 108 quadratic objective terms Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 109 rows, 220 columns, 436 nonzeros Variable types: 0 continuous, 220 integer (219 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 132 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 33.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 25.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 15.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 11.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 8.00000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 7.00000 0.00000 100% - 0s 0 0 0.00000 0 14 7.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 2 0.00000 0 5 5.00000 0.00000 100% - 0s H 27 19 4.0000000 0.00000 100% 1.7 0s * 36 21 9 3.0000000 0.00000 100% 1.9 0s * 319 30 16 2.0000000 0.00000 100% 5.3 0s Cutting planes: Cover: 189 Explored 398 nodes (4394 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%