Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:15 2013 Optimize a model with 308 rows, 7868 columns and 15708 nonzeros Presolve time: 0.01s Presolved: 308 rows, 7868 columns, 15708 nonzeros Variable types: 7840 continuous, 28 integer (28 binary) Root relaxation: objective 2.344599e+04, 261 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23445.9882 0 3 - 23445.9882 - - 0s H 0 0 23816.000000 23445.9882 1.55% - 0s 0 0 23515.9928 0 3 23816.0000 23515.9928 1.26% - 0s 0 0 23523.7206 0 3 23816.0000 23523.7206 1.23% - 0s 0 0 23524.3985 0 2 23816.0000 23524.3985 1.22% - 0s 0 0 23524.7250 0 1 23816.0000 23524.7250 1.22% - 0s H 0 0 23739.325000 23524.7250 0.90% - 0s H 0 0 23628.000000 23524.7250 0.44% - 0s 0 0 23525.0250 0 1 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 1 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 3 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 3 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 1 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 1 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 2 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 2 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 2 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 1 23628.0000 23525.0250 0.44% - 0s 0 0 23525.0250 0 1 23628.0000 23525.0250 0.44% - 0s 0 2 23525.6042 0 1 23628.0000 23525.6042 0.43% - 0s H 4 2 23612.000000 23542.8878 0.29% 8.2 0s * 5 2 5 23588.000000 23542.8878 0.19% 8.0 0s Cutting planes: Implied bound: 43 Flow cover: 4 Explored 9 nodes (667 simplex iterations) in 0.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.358800000000e+04, best bound 2.358800000000e+04, gap 0.0%