Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:06:22 2012 Optimize a model with 809 rows, 240 columns and 2593 nonzeros Presolve removed 527 rows and 2 columns Presolve time: 0.01s Presolved: 282 rows, 238 columns, 1370 nonzeros Variable types: 0 continuous, 238 integer (238 binary) Found heuristic solution: objective 15.0000000 Root relaxation: objective 4.000000e+00, 414 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 16 15.00000 4.00000 73.3% - 0s H 0 0 9.0000000 4.00000 55.6% - 0s H 0 0 5.0000000 4.00000 20.0% - 0s 0 0 4.00000 0 26 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 14 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 17 5.00000 4.00000 20.0% - 0s 0 0 4.00000 0 17 5.00000 4.00000 20.0% - 0s 0 2 4.00000 0 17 5.00000 4.00000 20.0% - 0s Explored 3 nodes (4215 simplex iterations) in 0.14 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%