Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:38:53 2013 Optimize a model with 803 rows, 53363 columns and 106653 nonzeros Presolve time: 0.08s Presolved: 803 rows, 53363 columns, 106653 nonzeros Variable types: 53290 continuous, 73 integer (73 binary) Root relaxation: objective 7.782176e+04, 1896 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 77821.7574 0 12 - 77821.7574 - - 0s H 0 0 87225.000000 77821.7574 10.8% - 0s H 0 0 78553.000000 77821.7574 0.93% - 0s 0 0 78234.5741 0 7 78553.0000 78234.5741 0.41% - 0s 0 0 78251.3140 0 7 78553.0000 78251.3140 0.38% - 0s 0 0 78251.3140 0 12 78553.0000 78251.3140 0.38% - 0s 0 0 78251.3140 0 7 78553.0000 78251.3140 0.38% - 0s 0 0 78251.3140 0 7 78553.0000 78251.3140 0.38% - 0s 0 0 78255.5474 0 9 78553.0000 78255.5474 0.38% - 1s 0 0 78260.7138 0 8 78553.0000 78260.7138 0.37% - 1s 0 0 78261.0544 0 7 78553.0000 78261.0544 0.37% - 1s 0 0 78261.1319 0 7 78553.0000 78261.1319 0.37% - 1s 0 0 78261.3564 0 7 78553.0000 78261.3564 0.37% - 1s H 0 0 78521.000000 78261.3564 0.33% - 1s H 0 0 78489.000000 78261.3564 0.29% - 1s 0 2 78274.5052 0 7 78489.0000 78274.5052 0.27% - 1s * 12 6 11 78451.000000 78327.2675 0.16% 48.7 1s Cutting planes: Implied bound: 133 Flow cover: 14 Explored 30 nodes (5733 simplex iterations) in 1.91 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%