Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:31 2012 Optimize a model with 1 rows, 167 columns and 167 nonzeros Model has 146 quadratic objective terms Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 147 rows, 286 columns, 578 nonzeros Variable types: 0 continuous, 286 integer (285 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 0.000000e+00, 180 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 39 38.00000 0.00000 100% - 0s 0 0 0.00000 0 36 38.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s 0 0 0.00000 0 37 33.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 15.00000 0.00000 100% - 0s 0 0 0.00000 0 17 15.00000 0.00000 100% - 0s H 0 0 14.0000000 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 0 0 0.00000 0 15 11.00000 0.00000 100% - 0s 0 0 0.00000 0 18 11.00000 0.00000 100% - 0s 0 0 0.00000 0 18 11.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 2 0.00000 0 15 10.00000 0.00000 100% - 0s H 54 44 8.0000000 0.00000 100% 3.2 0s H 441 246 7.0000000 0.00000 100% 6.2 0s * 455 181 37 5.0000000 0.00000 100% 6.1 0s Cutting planes: Cover: 278 MIR: 4 Explored 786 nodes (27278 simplex iterations) in 0.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%