Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:11:53 2013 Optimize a model with 26571 rows, 26061 columns and 104091 nonzeros Presolve removed 2270 rows and 0 columns Presolve time: 0.15s Presolved: 24301 rows, 26061 columns, 99551 nonzeros Variable types: 26010 continuous, 51 integer (51 binary) Root relaxation: objective 6.976200e+04, 5981 iterations, 0.57 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69762.0000 0 1 - 69762.0000 - - 0s H 0 0 69779.000000 69762.0000 0.02% - 0s H 0 0 69768.000000 69762.0000 0.01% - 0s Explored 0 nodes (5981 simplex iterations) in 0.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.976800000000e+04, best bound 6.976200000000e+04, gap 0.0086%