Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:54 2012 Optimize a model with 1 rows, 144 columns and 144 nonzeros Model has 111 quadratic objective terms Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 112 rows, 224 columns, 446 nonzeros Variable types: 0 continuous, 224 integer (223 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 0.000000e+00, 136 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 14 24.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 14.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 12.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 8.00000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s 0 0 0.00000 0 7 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 7.00000 0.00000 100% - 0s 0 0 0.00000 0 7 7.00000 0.00000 100% - 0s 0 0 0.00000 0 11 7.00000 0.00000 100% - 0s 0 0 0.00000 0 11 7.00000 0.00000 100% - 0s 0 2 0.00000 0 11 7.00000 0.00000 100% - 0s H 41 23 5.0000000 0.00000 100% 2.0 0s H 108 32 3.0000000 0.00000 100% 2.1 0s H 298 60 2.0000000 0.00000 100% 5.4 0s Cutting planes: Cover: 187 Explored 417 nodes (5431 simplex iterations) in 0.12 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%