Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:58 2012 Optimize a model with 1 rows, 161 columns and 161 nonzeros Model has 138 quadratic objective terms Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 139 rows, 279 columns, 555 nonzeros Variable types: 0 continuous, 279 integer (278 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 0.000000e+00, 182 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 49 42.00000 0.00000 100% - 0s 0 0 0.00000 0 28 42.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 18.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 11.00000 0.00000 100% - 0s 0 0 0.00000 0 22 11.00000 0.00000 100% - 0s 0 0 0.00000 0 8 11.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 7 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 7 7.00000 0.00000 100% - 0s H 5 5 6.0000000 0.00000 100% 1.0 0s H 190 76 5.0000000 0.00000 100% 3.1 0s * 193 59 15 4.0000000 0.00000 100% 3.1 0s H 381 69 3.0000000 0.00000 100% 7.5 0s * 398 35 25 2.0000000 0.00000 100% 7.5 0s Cutting planes: Cover: 222 Explored 440 nodes (6921 simplex iterations) in 0.14 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%