Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:40:36 2013 Optimize a model with 682 rows, 38502 columns and 76942 nonzeros Presolve time: 0.05s Presolved: 682 rows, 38502 columns, 76942 nonzeros Variable types: 38440 continuous, 62 integer (62 binary) Root relaxation: objective 6.015558e+04, 1364 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60155.5759 0 9 - 60155.5759 - - 0s H 0 0 66242.000000 60155.5759 9.19% - 0s H 0 0 61710.000000 60155.5759 2.52% - 0s 0 0 60573.9481 0 7 61710.0000 60573.9481 1.84% - 0s 0 0 60675.8107 0 8 61710.0000 60675.8107 1.68% - 0s 0 0 60688.9137 0 7 61710.0000 60688.9137 1.65% - 0s 0 0 60713.9665 0 7 61710.0000 60713.9665 1.61% - 0s 0 0 60715.5138 0 7 61710.0000 60715.5138 1.61% - 0s 0 0 60715.5138 0 7 61710.0000 60715.5138 1.61% - 0s H 0 0 61271.000000 60715.5138 0.91% - 0s 0 0 60715.5138 0 9 61271.0000 60715.5138 0.91% - 0s 0 0 60715.5138 0 7 61271.0000 60715.5138 0.91% - 1s 0 0 60715.5138 0 8 61271.0000 60715.5138 0.91% - 1s 0 0 60715.5138 0 7 61271.0000 60715.5138 0.91% - 1s 0 0 60716.2358 0 7 61271.0000 60716.2358 0.91% - 1s 0 0 60716.7640 0 7 61271.0000 60716.7640 0.90% - 1s 0 0 60716.7640 0 7 61271.0000 60716.7640 0.90% - 1s 0 0 60895.2416 0 7 61271.0000 60895.2416 0.61% - 1s 0 2 60909.7627 0 7 61271.0000 60909.7627 0.59% - 1s H 10 8 61246.740741 61062.1255 0.30% 51.0 1s * 11 9 9 61187.000000 61062.1255 0.20% 48.5 1s Cutting planes: Implied bound: 142 Flow cover: 3 Explored 21 nodes (4095 simplex iterations) in 1.63 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%