Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:42 2013 Optimize a model with 6550 rows, 6300 columns and 25050 nonzeros Presolve removed 25 rows and 0 columns Presolve time: 0.03s Presolved: 6525 rows, 6300 columns, 25025 nonzeros Variable types: 6275 continuous, 25 integer (25 binary) Root relaxation: objective 2.735891e+04, 877 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 27358.9083 0 18 - 27358.9083 - - 0s H 0 0 29887.000000 27358.9083 8.46% - 0s 0 0 29086.0612 0 1 29887.0000 29086.0612 2.68% - 0s H 0 0 29468.448980 29086.0612 1.30% - 0s H 0 0 29281.000000 29086.0612 0.67% - 0s H 0 0 29117.000000 29086.0612 0.11% - 0s Cutting planes: Implied bound: 18 Explored 0 nodes (1127 simplex iterations) in 0.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.911700000000e+04, best bound 2.911700000000e+04, gap 0.0%