Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:19:25 2013 Optimize a model with 770 rows, 49070 columns and 98070 nonzeros Presolve time: 0.07s Presolved: 770 rows, 49070 columns, 98070 nonzeros Variable types: 49000 continuous, 70 integer (70 binary) Root relaxation: objective 8.548327e+04, 2084 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 85483.2672 0 5 - 85483.2672 - - 0s H 0 0 86964.000000 85483.2672 1.70% - 0s * 0 0 0 85555.000000 85555.0000 0.0% - 0s Cutting planes: Implied bound: 45 Flow cover: 7 Explored 0 nodes (2159 simplex iterations) in 0.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.555500000000e+04, best bound 8.555500000000e+04, gap 0.0%