Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:24:12 2012 Optimize a model with 287 rows, 215 columns and 930 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 287 rows, 213 columns, 928 nonzeros Variable types: 0 continuous, 213 integer (212 binary) Found heuristic solution: objective 64.0000000 Root relaxation: objective 0.000000e+00, 107 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 69 64.00000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s 0 0 0.58454 0 70 43.00000 0.58454 98.6% - 0s 0 0 1.00000 0 72 43.00000 1.00000 97.7% - 0s 0 0 1.00000 0 72 43.00000 1.00000 97.7% - 0s 0 0 1.00000 0 71 43.00000 1.00000 97.7% - 0s H 0 0 41.0000000 1.00000 97.6% - 0s 0 2 1.00000 0 71 41.00000 1.00000 97.6% - 0s H 33 29 26.0000000 1.00000 96.2% 28.1 0s * 112 60 20 25.0000000 4.69355 81.2% 29.3 0s Explored 1963 nodes (44932 simplex iterations) in 1.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%