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 128 quadratic objective terms Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 129 rows, 261 columns, 517 nonzeros Variable types: 0 continuous, 261 integer (260 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 0.000000e+00, 171 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 34 34.00000 0.00000 100% - 0s 0 0 0.00000 0 18 34.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 16.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 14.00000 0.00000 100% - 0s 0 0 0.00000 0 12 14.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 10.00000 0.00000 100% - 0s 0 0 0.00000 0 14 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 14 8.00000 0.00000 100% - 0s H 51 32 5.0000000 0.00000 100% 2.0 0s H 108 58 4.0000000 0.00000 100% 3.4 0s H 325 35 2.0000000 0.00000 100% 7.5 0s Cutting planes: Cover: 216 Explored 407 nodes (6188 simplex iterations) in 0.13 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%