Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:11 2012 Optimize a model with 238 rows, 32 columns and 476 nonzeros Presolve removed 169 rows and 1 columns Presolve time: 0.00s Presolved: 69 rows, 31 columns, 308 nonzeros Variable types: 0 continuous, 31 integer (31 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 7.031250e+00, 45 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 7.03125 0 25 5.00000 7.03125 40.6% - 0s H 0 0 6.0000000 7.03125 17.2% - 0s Explored 0 nodes (54 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 7.000000000000e+00, gap 16.6667%