Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:27:41 2012 Optimize a model with 315 rows, 232 columns and 1017 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 315 rows, 231 columns, 1016 nonzeros Variable types: 0 continuous, 231 integer (230 binary) Found heuristic solution: objective 66.0000000 Root relaxation: objective 0.000000e+00, 114 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 73 66.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s 0 0 0.49315 0 74 58.00000 0.49315 99.1% - 0s H 0 0 57.0000000 0.49315 99.1% - 0s 0 0 1.06778 0 77 57.00000 1.06778 98.1% - 0s H 0 0 54.0000000 1.06778 98.0% - 0s 0 0 1.07766 0 78 54.00000 1.07766 98.0% - 0s 0 0 1.07766 0 78 54.00000 1.07766 98.0% - 0s H 0 0 52.0000000 1.07766 97.9% - 0s H 0 0 50.0000000 1.07766 97.8% - 0s 0 2 1.07886 0 78 50.00000 1.07886 97.8% - 0s H 27 27 48.0000000 3.44882 92.8% 49.6 0s * 47 47 28 36.0000000 3.44882 90.4% 35.0 0s * 50 41 31 34.0000000 3.44882 89.9% 33.3 0s * 92 64 24 33.0000000 3.50322 89.4% 29.4 0s H 658 393 32.0000000 10.63750 66.8% 27.6 0s 6631 166 cutoff 22 32.00000 27.00000 15.6% 20.3 5s Explored 7119 nodes (143319 simplex iterations) in 5.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%