Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:47 2013 Optimize a model with 286 rows, 6786 columns and 13546 nonzeros Presolve time: 0.01s Presolved: 286 rows, 6786 columns, 13546 nonzeros Variable types: 6760 continuous, 26 integer (26 binary) Root relaxation: objective 2.450861e+04, 281 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 24508.6076 0 7 - 24508.6076 - - 0s H 0 0 25266.000000 24508.6076 3.00% - 0s 0 0 24814.4333 0 1 25266.0000 24814.4333 1.79% - 0s H 0 0 25067.188889 24814.4333 1.01% - 0s H 0 0 25031.000000 24814.4333 0.87% - 0s H 0 0 24962.000000 24814.4333 0.59% - 0s 0 0 24815.0000 0 1 24962.0000 24815.0000 0.59% - 0s 0 0 24815.0000 0 1 24962.0000 24815.0000 0.59% - 0s 0 0 24815.0000 0 1 24962.0000 24815.0000 0.59% - 0s 0 0 24815.0000 0 1 24962.0000 24815.0000 0.59% - 0s 0 2 24841.2000 0 1 24962.0000 24841.2000 0.48% - 0s H 1 1 24898.600000 24841.2000 0.23% 20.0 0s * 2 1 2 24881.000000 24881.0000 0.0% 32.5 0s Cutting planes: Implied bound: 25 Flow cover: 2 Explored 3 nodes (444 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.488100000000e+04, best bound 2.488100000000e+04, gap 0.0%