Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:13 2012 Optimize a model with 400 rows, 40 columns and 800 nonzeros Presolve removed 275 rows and 0 columns Presolve time: 0.00s Presolved: 125 rows, 40 columns, 630 nonzeros Variable types: 0 continuous, 40 integer (40 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 8.075085e+00, 76 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8.07509 0 31 6.00000 8.07509 34.6% - 0s 0 0 7.71322 0 37 6.00000 7.71322 28.6% - 0s H 0 0 7.0000000 7.71322 10.2% - 0s Cutting planes: Clique: 7 Zero half: 4 Explored 0 nodes (126 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%