Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:34:58 2013 Optimize a model with 36720 rows, 36120 columns and 144120 nonzeros Presolve removed 60 rows and 0 columns Presolve time: 0.16s Presolved: 36660 rows, 36120 columns, 144060 nonzeros Variable types: 36060 continuous, 60 integer (60 binary) Root relaxation: objective 4.812544e+04, 3445 iterations, 1.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 48125.4411 0 44 - 48125.4411 - - 1s H 0 0 63757.000000 48125.4411 24.5% - 2s 0 0 54698.6862 0 15 63757.0000 54698.6862 14.2% - 4s H 0 0 59480.000000 54698.6862 8.04% - 4s 0 0 55436.3196 0 6 59480.0000 55436.3196 6.80% - 5s H 0 0 59001.102844 55436.3196 6.04% - 5s H 0 0 57174.000000 55436.3196 3.04% - 5s 0 0 55436.7138 0 4 57174.0000 55436.7138 3.04% - 5s H 0 0 56803.958783 55436.7138 2.41% - 5s H 0 0 55657.000000 55436.7138 0.40% - 5s H 0 0 55483.000000 55436.7138 0.08% - 6s 0 0 55436.7138 0 29 55483.0000 55436.7138 0.08% - 7s 0 0 55436.7138 0 12 55483.0000 55436.7138 0.08% - 9s 0 0 55436.7138 0 5 55483.0000 55436.7138 0.08% - 10s 0 0 55436.7138 0 6 55483.0000 55436.7138 0.08% - 10s 0 0 55436.7138 0 4 55483.0000 55436.7138 0.08% - 10s 0 2 55437.3941 0 4 55483.0000 55437.3941 0.08% - 11s Cutting planes: Gomory: 3 Implied bound: 38 Explored 2 nodes (10802 simplex iterations) in 11.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.548300000000e+04, best bound 5.547905263158e+04, gap 0.0071%