Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:15 2012 Optimize a model with 492 rows, 45 columns and 984 nonzeros Presolve removed 340 rows and 0 columns Presolve time: 0.01s Presolved: 152 rows, 45 columns, 803 nonzeros Variable types: 0 continuous, 45 integer (45 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 8.806299e+00, 89 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 8.80630 0 39 7.00000 8.80630 25.8% - 0s H 0 0 8.0000000 8.80630 10.1% - 0s Explored 0 nodes (91 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%