Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:26 2012 Optimize a model with 1 rows, 50 columns and 50 nonzeros Model has 74 quadratic objective terms Presolve time: 0.00s Presolved: 75 rows, 124 columns, 272 nonzeros Variable types: 0 continuous, 124 integer (124 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 0.000000e+00, 98 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 31 27.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 24.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 21.00000 0.00000 100% - 0s 0 0 0.00000 0 16 21.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 14.00000 0.00000 100% - 0s 0 0 0.00000 0 21 14.00000 0.00000 100% - 0s 0 0 0.00000 0 15 14.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 2 0.00000 0 13 13.00000 0.00000 100% - 0s H 90 48 11.0000000 0.00000 100% 3.1 0s H 91 47 10.0000000 0.00000 100% 3.1 0s H 108 54 9.0000000 0.00000 100% 3.2 0s * 259 27 8 8.0000000 5.00000 37.5% 18.9 0s Cutting planes: Cover: 141 MIR: 2 Zero half: 1 Explored 287 nodes (5746 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%