Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:49 2012 Optimize a model with 1 rows, 154 columns and 154 nonzeros Model has 118 quadratic objective terms Presolve removed 0 rows and 34 columns Presolve time: 0.00s Presolved: 119 rows, 238 columns, 474 nonzeros Variable types: 0 continuous, 238 integer (237 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 0.000000e+00, 155 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 14 26.00000 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 H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 13.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 10.00000 0.00000 100% - 0s 0 0 0.00000 0 14 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 13 8.00000 0.00000 100% - 0s H 28 26 7.0000000 0.00000 100% 1.5 0s * 53 39 17 6.0000000 0.00000 100% 1.7 0s H 76 25 3.0000000 0.00000 100% 2.3 0s * 260 38 9 2.0000000 0.00000 100% 7.1 0s Cutting planes: Cover: 194 Explored 341 nodes (3318 simplex iterations) in 0.08 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%