Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:39:55 2013 Optimize a model with 54166 rows, 53436 columns and 213306 nonzeros Presolve removed 73 rows and 0 columns Presolve time: 0.24s Presolved: 54093 rows, 53436 columns, 213233 nonzeros Variable types: 53363 continuous, 73 integer (73 binary) Root relaxation: objective 5.890019e+04, 6617 iterations, 3.79 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 58900.1851 0 50 - 58900.1851 - - 4s H 0 0 92214.000000 58900.1851 36.1% - 6s 0 0 73782.1842 0 20 92214.0000 73782.1842 20.0% - 16s H 0 0 84536.000000 73782.1842 12.7% - 16s 0 0 77746.0152 0 11 84536.0000 77746.0152 8.03% - 19s H 0 0 84501.000000 77746.0152 7.99% - 19s 0 0 78259.1823 0 6 84501.0000 78259.1823 7.39% - 20s H 0 0 81208.941623 78259.1823 3.63% - 20s H 0 0 80454.000000 78259.1823 2.73% - 20s H 0 0 78489.000000 78259.1823 0.29% - 20s 0 0 78259.1823 0 44 78489.0000 78259.1823 0.29% - 27s 0 0 78259.1823 0 17 78489.0000 78259.1823 0.29% - 48s 0 0 78259.1823 0 8 78489.0000 78259.1823 0.29% - 50s 0 0 78259.1823 0 6 78489.0000 78259.1823 0.29% - 50s 0 0 78259.1823 0 6 78489.0000 78259.1823 0.29% - 51s 0 2 78263.8767 0 6 78489.0000 78263.8767 0.29% - 52s H 11 5 78464.622222 78330.5555 0.17% 172 53s * 12 5 11 78451.000000 78330.5555 0.15% 167 53s Cutting planes: Implied bound: 57 Explored 20 nodes (31000 simplex iterations) in 53.92 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.845100000000e+04, best bound 7.845100000000e+04, gap 0.0%