Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:31:49 2012 Optimize a model with 531 rows, 495 columns and 1820 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 531 rows, 470 columns, 1795 nonzeros Variable types: 0 continuous, 470 integer (469 binary) Found heuristic solution: objective 95.0000000 Root relaxation: objective 0.000000e+00, 256 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 0 197 95.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s 0 0 0.30478 0 199 72.00000 0.30478 100% - 0s H 0 0 69.0000000 0.30478 100% - 0s 0 0 0.98669 0 202 69.00000 0.98669 98.6% - 0s H 0 0 66.0000000 0.98669 98.5% - 0s 0 0 0.98706 0 204 66.00000 0.98706 98.5% - 0s 0 0 0.98706 0 204 66.00000 0.98706 98.5% - 0s H 0 0 58.0000000 0.98706 98.3% - 0s H 0 0 57.0000000 0.98706 98.3% - 0s H 0 0 54.0000000 0.98706 98.2% - 0s H 0 0 48.0000000 0.98706 97.9% - 0s 0 2 0.99335 0 203 48.00000 0.99335 97.9% - 0s H 27 27 37.0000000 1.00000 97.3% 39.8 0s H 54 46 23.0000000 1.00000 95.7% 28.4 0s H 81 57 22.0000000 1.11124 94.9% 30.5 0s * 200 131 20 21.0000000 1.21161 94.2% 33.9 0s H 297 149 20.0000000 1.30675 93.5% 34.0 0s * 3058 737 30 19.0000000 13.72059 27.8% 22.5 3s 4029 710 cutoff 23 19.00000 14.72727 22.5% 21.6 5s * 6051 12 28 18.0000000 17.00000 5.56% 21.2 6s Explored 6064 nodes (129632 simplex iterations) in 6.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%