Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:59 2013 Optimize a model with 480 rows, 4640 columns and 9620 nonzeros Presolve removed 40 rows and 60 columns Presolve time: 0.02s Presolved: 440 rows, 4580 columns, 9160 nonzeros Variable types: 4400 continuous, 180 integer (180 binary) Root relaxation: objective 3.600389e+04, 430 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36003.8892 0 2 - 36003.8892 - - 0s 0 0 36043.4270 0 2 - 36043.4270 - - 0s 0 0 36062.4866 0 2 - 36062.4866 - - 0s 0 0 36087.0667 0 2 - 36087.0667 - - 0s 0 0 36100.6223 0 2 - 36100.6223 - - 0s 0 0 36100.6223 0 2 - 36100.6223 - - 0s 0 0 36102.7060 0 2 - 36102.7060 - - 0s 0 0 36102.7060 0 2 - 36102.7060 - - 0s H 0 0 36205.312430 36102.7060 0.28% - 0s 0 1 36116.1010 0 2 36205.3124 36116.1010 0.25% - 0s Cutting planes: Flow cover: 9 Explored 4 nodes (592 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.620531243015e+04, best bound 3.620209451693e+04, gap 0.0089%