Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:40 2012 Optimize a model with 1 rows, 45 columns and 45 nonzeros Model has 50 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 51 rows, 94 columns, 194 nonzeros Variable types: 0 continuous, 94 integer (93 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 0.000000e+00, 64 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 10 19.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 10.00000 0.00000 100% - 0s 0 0 0.00000 0 12 10.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 9.00000 0.00000 100% - 0s 0 0 0.00000 0 7 9.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 2 0.00000 0 7 7.00000 0.00000 100% - 0s * 81 45 11 5.0000000 0.00000 100% 2.7 0s H 101 37 4.0000000 0.00000 100% 3.3 0s Cutting planes: Cover: 86 Explored 211 nodes (1985 simplex iterations) in 0.04 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%