Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:40:41 2013 Optimize a model with 64960 rows, 64160 columns and 256160 nonzeros Presolve removed 80 rows and 0 columns Presolve time: 0.30s Presolved: 64880 rows, 64160 columns, 256080 nonzeros Variable types: 64080 continuous, 80 integer (80 binary) Root relaxation: objective 6.155455e+04, 7465 iterations, 4.53 seconds Total elapsed time = 5.13s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61554.5455 0 58 - 61554.5455 - - 5s H 0 0 90364.000000 61554.5455 31.9% - 7s H 0 0 77882.000000 61554.5455 21.0% - 29s 0 0 72736.4801 0 18 77882.0000 72736.4801 6.61% - 37s 0 0 74626.1141 0 8 77882.0000 74626.1141 4.18% - 39s 0 0 75140.9599 0 2 77882.0000 75140.9599 3.52% - 40s H 0 0 77335.000000 75140.9599 2.84% - 40s 0 0 75151.2197 0 2 77335.0000 75151.2197 2.82% - 41s H 0 0 76692.068182 75151.2197 2.01% - 41s H 0 0 76421.000000 75151.2197 1.66% - 41s H 0 0 75862.000000 75151.2197 0.94% - 41s 0 2 75152.4444 0 2 75862.0000 75152.4444 0.94% - 42s H 2 2 75712.348837 75152.7558 0.74% 8.0 42s 10 9 75236.1824 10 2 75712.3488 75153.6170 0.74% 147 45s * 20 7 20 75443.000000 75153.6170 0.38% 184 46s * 24 6 5 75381.000000 75186.5607 0.26% 172 47s * 30 4 4 75343.000000 75229.1014 0.15% 188 48s Cutting planes: Implied bound: 77 Explored 39 nodes (21194 simplex iterations) in 48.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.534300000000e+04, best bound 7.534300000000e+04, gap 0.0%