Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:30 2012 Optimize a model with 1 rows, 59 columns and 59 nonzeros Model has 99 quadratic objective terms Presolve time: 0.00s Presolved: 100 rows, 158 columns, 356 nonzeros Variable types: 0 continuous, 158 integer (158 binary) Found heuristic solution: objective 49.0000000 Found heuristic solution: objective 39.0000000 Root relaxation: objective 0.000000e+00, 140 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 37 39.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 33.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 91 27.00000 0.00000 100% - 0s 0 0 0.00000 0 26 27.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 2 0.00000 0 26 26.00000 0.00000 100% - 0s H 165 119 25.0000000 0.00000 100% 4.3 0s H 171 120 23.0000000 0.00000 100% 4.4 0s H 173 118 22.0000000 0.00000 100% 4.4 0s H 179 122 21.0000000 0.00000 100% 4.6 0s H 299 162 19.0000000 1.00000 94.7% 7.2 0s H 353 181 18.0000000 1.00000 94.4% 7.6 0s H 548 213 17.0000000 2.00000 88.2% 11.6 0s Cutting planes: Cover: 195 Explored 1212 nodes (21228 simplex iterations) in 0.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%