Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:43 2013 Optimize a model with 480 rows, 5420 columns and 14620 nonzeros Presolve removed 20 rows and 500 columns Presolve time: 0.02s Presolved: 460 rows, 4920 columns, 13820 nonzeros Variable types: 4820 continuous, 100 integer (100 binary) Root relaxation: objective 4.370285e+04, 506 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43702.8549 0 6 - 43702.8549 - - 0s 0 0 43716.5351 0 6 - 43716.5351 - - 0s 0 0 43716.5351 0 6 - 43716.5351 - - 0s 0 0 43716.5351 0 6 - 43716.5351 - - 0s H 0 0 47316.675821 43716.5351 7.61% - 0s 0 2 43725.5984 0 6 47316.6758 43725.5984 7.59% - 0s * 17 15 16 44070.113728 43758.5724 0.71% 14.9 0s * 24 8 8 43903.648117 43771.9084 0.30% 12.1 0s * 39 4 6 43900.745969 43888.3683 0.03% 11.2 0s Cutting planes: Flow cover: 3 Explored 44 nodes (1152 simplex iterations) in 0.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.390074596881e+04, best bound 4.390074596881e+04, gap 0.0%