Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:39 2012 Optimize a model with 1 rows, 175 columns and 175 nonzeros Model has 153 quadratic objective terms Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 154 rows, 304 columns, 610 nonzeros Variable types: 0 continuous, 304 integer (303 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 200 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 54 41.00000 0.00000 100% - 0s 0 0 0.00000 0 29 41.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 20.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 39 14.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 12.00000 0.00000 100% - 0s 0 0 0.00000 0 18 12.00000 0.00000 100% - 0s 0 0 0.00000 0 23 12.00000 0.00000 100% - 0s 0 0 0.00000 0 21 12.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 12 8.00000 0.00000 100% - 0s H 27 22 7.0000000 0.00000 100% 1.8 0s H 82 56 6.0000000 0.00000 100% 3.0 0s H 190 102 5.0000000 0.00000 100% 5.2 0s H 491 128 4.0000000 0.45455 88.6% 13.0 0s Cutting planes: Cover: 264 MIR: 4 Explored 632 nodes (15300 simplex iterations) in 0.29 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%