Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:20:25 2012 Optimize a model with 1 rows, 123 columns and 123 nonzeros Model has 92 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 93 rows, 190 columns, 374 nonzeros Variable types: 0 continuous, 190 integer (189 binary) Found heuristic solution: objective 25.0000000 Root relaxation: objective 0.000000e+00, 122 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 21 25.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 16.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 15.00000 0.00000 100% - 0s 0 0 0.00000 0 14 15.00000 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 6 11.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 6.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 5.00000 0.00000 100% - 0s 0 0 0.00000 0 5 5.00000 0.00000 100% - 0s H 0 0 2.0000000 0.00000 100% - 0s 0 2 0.00000 0 3 2.00000 0.00000 100% - 0s * 263 11 27 1.0000000 0.00000 100% 4.5 0s Cutting planes: Cover: 102 Explored 264 nodes (1531 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%