Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:26:34 2012 Optimize a model with 1 rows, 150 columns and 150 nonzeros Model has 121 quadratic objective terms Presolve removed 0 rows and 33 columns Presolve time: 0.00s Presolved: 122 rows, 238 columns, 480 nonzeros Variable types: 0 continuous, 238 integer (237 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 0.000000e+00, 148 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 29 26.00000 0.00000 100% - 0s 0 0 0.00000 0 16 26.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 14.00000 0.00000 100% - 0s 0 0 0.00000 0 16 14.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 9.00000 0.00000 100% - 0s 0 0 0.00000 0 15 9.00000 0.00000 100% - 0s 0 0 0.00000 0 10 9.00000 0.00000 100% - 0s 0 0 0.00000 0 19 9.00000 0.00000 100% - 0s 0 0 0.00000 0 19 9.00000 0.00000 100% - 0s 0 2 0.00000 0 19 9.00000 0.00000 100% - 0s H 144 77 7.0000000 0.00000 100% 4.2 0s H 168 66 5.0000000 0.00000 100% 4.3 0s H 440 99 4.0000000 0.00000 100% 9.7 0s Cutting planes: Cover: 226 Explored 561 nodes (11813 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%