Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:57:47 2012 Optimize a model with 531 rows, 498 columns and 1823 nonzeros Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 531 rows, 481 columns, 1806 nonzeros Variable types: 0 continuous, 481 integer (480 binary) Found heuristic solution: objective 93.0000000 Root relaxation: objective 0.000000e+00, 266 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 0 200 93.00000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s 0 0 0.32093 0 202 71.00000 0.32093 100% - 0s H 0 0 58.0000000 0.32093 99.4% - 0s 0 0 0.80660 0 206 58.00000 0.80660 98.6% - 0s H 0 0 56.0000000 0.80660 98.6% - 0s 0 0 0.80660 0 207 56.00000 0.80660 98.6% - 0s 0 0 0.80660 0 207 56.00000 0.80660 98.6% - 0s H 0 0 52.0000000 0.80660 98.4% - 0s H 0 0 34.0000000 0.80660 97.6% - 0s 0 2 0.81947 0 207 34.00000 0.81947 97.6% - 0s H 27 27 33.0000000 1.00000 97.0% 39.7 0s H 54 38 20.0000000 1.00000 95.0% 29.4 0s * 121 77 21 19.0000000 1.00000 94.7% 32.4 0s H 253 142 17.0000000 1.10798 93.5% 34.9 0s Explored 2001 nodes (59083 simplex iterations) in 3.01 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%