Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:57 2012 Optimize a model with 1 rows, 57 columns and 57 nonzeros Model has 88 quadratic objective terms Presolve time: 0.00s Presolved: 89 rows, 145 columns, 321 nonzeros Variable types: 0 continuous, 145 integer (145 binary) Found heuristic solution: objective 37.0000000 Root relaxation: objective 0.000000e+00, 120 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 26 37.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 36 26.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 24.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 32 23.00000 0.00000 100% - 0s 0 0 0.00000 0 26 23.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 2 0.00000 0 26 22.00000 0.00000 100% - 0s H 93 72 20.0000000 0.00000 100% 2.8 0s H 109 84 19.0000000 0.00000 100% 4.0 0s H 164 125 18.0000000 0.00000 100% 4.6 0s H 218 134 14.0000000 0.00000 100% 5.8 0s H 248 146 13.0000000 0.00000 100% 7.2 0s H 296 148 12.0000000 0.66667 94.4% 8.1 0s * 303 134 21 11.0000000 0.66667 93.9% 8.0 0s Cutting planes: Cover: 165 MIR: 4 Zero half: 1 Explored 575 nodes (12023 simplex iterations) in 0.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%