Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:41:37 2013 Optimize a model with 39184 rows, 38564 columns and 153884 nonzeros Presolve removed 62 rows and 0 columns Presolve time: 0.17s Presolved: 39122 rows, 38564 columns, 153822 nonzeros Variable types: 38502 continuous, 62 integer (62 binary) Root relaxation: objective 5.005760e+04, 5146 iterations, 2.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 50057.6037 0 48 - 50057.6037 - - 2s H 0 0 72708.000000 50057.6037 31.2% - 3s 0 0 57635.1042 0 15 72708.0000 57635.1042 20.7% - 7s H 0 0 68032.000000 57635.1042 15.3% - 7s 0 0 60442.2148 0 8 68032.0000 60442.2148 11.2% - 8s H 0 0 66766.000000 60442.2148 9.47% - 8s 0 0 60715.3504 0 7 66766.0000 60715.3504 9.06% - 9s H 0 0 65611.513371 60715.3504 7.46% - 9s H 0 0 64582.000000 60715.3504 5.99% - 9s H 0 0 63540.000000 60715.3504 4.45% - 9s H 0 0 61271.000000 60715.3504 0.91% - 10s 0 2 60726.8861 0 7 61271.0000 60726.8861 0.89% - 10s * 19 11 8 61235.000000 60865.3497 0.60% 103 11s * 36 9 9 61187.000000 60956.2500 0.38% 125 12s Cutting planes: Gomory: 2 Implied bound: 58 Explored 47 nodes (15245 simplex iterations) in 12.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.118700000000e+04, best bound 6.118700000000e+04, gap 0.0%