Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:15:01 2013 Optimize a model with 27664 rows, 27144 columns and 108264 nonzeros Presolve removed 52 rows and 0 columns Presolve time: 0.12s Presolved: 27612 rows, 27144 columns, 108212 nonzeros Variable types: 27092 continuous, 52 integer (52 binary) Root relaxation: objective 5.099422e+04, 4015 iterations, 1.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 50994.2181 0 41 - 50994.2181 - - 1s H 0 0 70437.000000 50994.2181 27.6% - 2s 0 0 64101.4657 0 8 70437.0000 64101.4657 8.99% - 4s H 0 0 70309.256179 64101.4657 8.83% - 4s H 0 0 66454.000000 64101.4657 3.54% - 4s 0 0 65005.6503 0 5 66454.0000 65005.6503 2.18% - 5s H 0 0 66184.000000 65005.6503 1.78% - 5s 0 0 65028.2248 0 2 66184.0000 65028.2248 1.75% - 5s 0 2 65035.8857 0 2 66184.0000 65035.8857 1.73% - 5s H 5 5 66182.022901 65073.8102 1.67% 90.8 6s H 6 6 65910.454545 65078.2567 1.26% 81.5 6s H 10 10 65847.280000 65078.2567 1.17% 86.3 6s * 11 7 11 65262.000000 65078.2567 0.28% 86.2 6s H 14 2 65131.000000 65078.2567 0.08% 68.8 6s * 15 2 3 65113.000000 65078.7268 0.05% 77.3 6s Cutting planes: Implied bound: 45 Explored 20 nodes (9453 simplex iterations) in 6.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.511300000000e+04, best bound 6.511300000000e+04, gap 0.0%