Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:10:21 2012 Optimize a model with 3599 rows, 600 columns and 11278 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.07s Presolved: 3621 rows, 598 columns, 18605 nonzeros Variable types: 0 continuous, 598 integer (598 binary) Root relaxation: objective 4.933333e+00, 4085 iterations, 0.32 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4.93333 0 246 - 4.93333 - - 0s H 0 0 24.0000000 4.93333 79.4% - 0s 0 0 6.00000 0 69 24.00000 6.00000 75.0% - 1s H 0 0 18.0000000 6.00000 66.7% - 1s H 0 0 16.0000000 6.00000 62.5% - 1s H 0 0 7.0000000 6.00000 14.3% - 1s 0 0 6.00000 0 21 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 42 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 71 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 10 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 29 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 31 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 14 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 14 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 14 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 14 7.00000 6.00000 14.3% - 1s 0 2 6.00000 0 10 7.00000 6.00000 14.3% - 1s Cutting planes: Zero half: 13 Explored 34 nodes (12333 simplex iterations) in 1.49 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%