Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:31:58 2012 Optimize a model with 563 rows, 519 columns and 1924 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 563 rows, 504 columns, 1909 nonzeros Variable types: 0 continuous, 504 integer (503 binary) Found heuristic solution: objective 106.0000000 Root relaxation: objective 0.000000e+00, 301 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 0 216 106.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s 0 0 0.49121 0 217 72.00000 0.49121 99.3% - 0s H 0 0 71.0000000 0.49121 99.3% - 0s 0 0 1.00000 0 218 71.00000 1.00000 98.6% - 0s H 0 0 70.0000000 1.00000 98.6% - 0s 0 0 1.00000 0 213 70.00000 1.00000 98.6% - 0s H 0 0 61.0000000 1.00000 98.4% - 0s H 0 0 57.0000000 1.00000 98.2% - 0s 0 2 1.00000 0 213 57.00000 1.00000 98.2% - 0s H 27 27 55.0000000 1.00000 98.2% 69.7 0s H 54 54 40.0000000 1.00000 97.5% 44.2 0s H 63 38 20.0000000 1.00000 95.0% 40.5 0s * 122 68 17 19.0000000 1.00000 94.7% 45.2 0s H 1843 389 17.0000000 10.00000 41.2% 31.0 3s 2800 344 15.07143 22 221 17.00000 12.00000 29.4% 29.7 5s Explored 3952 nodes (113097 simplex iterations) in 6.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%