Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:06:21 2012 Optimize a model with 795 rows, 240 columns and 2565 nonzeros Presolve removed 525 rows and 0 columns Presolve time: 0.01s Presolved: 270 rows, 240 columns, 1380 nonzeros Variable types: 0 continuous, 240 integer (240 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 4.000000e+00, 433 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4.00000 0 17 9.00000 4.00000 55.6% - 0s H 0 0 5.0000000 4.00000 20.0% - 0s 0 0 4.00000 0 40 5.00000 4.00000 20.0% - 0s 0 0 4.00000 0 16 5.00000 4.00000 20.0% - 0s 0 0 4.00000 0 14 5.00000 4.00000 20.0% - 0s 0 0 4.00000 0 23 5.00000 4.00000 20.0% - 0s 0 0 4.00000 0 26 5.00000 4.00000 20.0% - 0s 0 0 4.00000 0 17 5.00000 4.00000 20.0% - 0s 0 0 4.00000 0 26 5.00000 4.00000 20.0% - 0s 0 0 4.00000 0 26 5.00000 4.00000 20.0% - 0s 0 0 4.00000 0 26 5.00000 4.00000 20.0% - 0s 0 2 4.00000 0 26 5.00000 4.00000 20.0% - 0s Cutting planes: Gomory: 3 Zero half: 2 Explored 7 nodes (6539 simplex iterations) in 0.27 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%