Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:02:25 2013 Optimize a model with 484 rows, 19404 columns and 38764 nonzeros Presolve time: 0.03s Presolved: 484 rows, 19404 columns, 38764 nonzeros Variable types: 19360 continuous, 44 integer (44 binary) Root relaxation: objective 4.611856e+04, 844 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46118.5614 0 4 - 46118.5614 - - 0s H 0 0 46744.000000 46118.5614 1.34% - 0s H 0 0 46338.000000 46118.5614 0.47% - 0s 0 0 46257.6432 0 4 46338.0000 46257.6432 0.17% - 0s 0 0 46265.7238 0 3 46338.0000 46265.7238 0.16% - 0s 0 0 46271.5521 0 3 46338.0000 46271.5521 0.14% - 0s 0 0 46274.3333 0 3 46338.0000 46274.3333 0.14% - 0s 0 0 46274.3333 0 3 46338.0000 46274.3333 0.14% - 0s 0 0 46274.3333 0 3 46338.0000 46274.3333 0.14% - 0s 0 0 46274.5276 0 4 46338.0000 46274.5276 0.14% - 0s 0 0 46308.7591 0 2 46338.0000 46308.7591 0.06% - 0s 0 0 46308.7591 0 2 46338.0000 46308.7591 0.06% - 0s 0 0 46308.7591 0 1 46338.0000 46308.7591 0.06% - 0s 0 0 46308.7591 0 1 46338.0000 46308.7591 0.06% - 0s 0 0 46308.7591 0 1 46338.0000 46308.7591 0.06% - 0s 0 0 46308.7591 0 1 46338.0000 46308.7591 0.06% - 0s 0 0 46308.8810 0 1 46338.0000 46308.8810 0.06% - 0s 0 0 46309.5970 0 2 46338.0000 46309.5970 0.06% - 0s 0 0 46309.7143 0 1 46338.0000 46309.7143 0.06% - 0s 0 0 46310.5278 0 1 46338.0000 46310.5278 0.06% - 0s 0 0 46310.5278 0 1 46338.0000 46310.5278 0.06% - 0s 0 0 46311.1429 0 1 46338.0000 46311.1429 0.06% - 0s Cutting planes: Implied bound: 27 Flow cover: 3 Explored 0 nodes (1782 simplex iterations) in 0.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.633800000000e+04, best bound 4.633800000000e+04, gap 0.0%