Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:51:36 2012 Optimize a model with 335 rows, 250 columns and 1085 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 335 rows, 249 columns, 1084 nonzeros Variable types: 0 continuous, 249 integer (248 binary) Found heuristic solution: objective 67.0000000 Root relaxation: objective 0.000000e+00, 124 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 81 67.00000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s 0 0 0.49383 0 82 56.00000 0.49383 99.1% - 0s H 0 0 54.0000000 0.49383 99.1% - 0s 0 0 1.00997 0 85 54.00000 1.00997 98.1% - 0s 0 0 1.18012 0 87 54.00000 1.18012 97.8% - 0s 0 0 1.20249 0 89 54.00000 1.20249 97.8% - 0s 0 0 1.20733 0 90 54.00000 1.20733 97.8% - 0s 0 0 1.20733 0 90 54.00000 1.20733 97.8% - 0s H 0 0 51.0000000 1.20733 97.6% - 0s H 0 0 49.0000000 1.20733 97.5% - 0s 0 2 1.21248 0 90 49.00000 1.21248 97.5% - 0s * 35 32 22 33.0000000 4.13925 87.5% 33.3 0s * 248 177 20 32.0000000 8.70483 72.8% 30.1 0s H 327 170 29.0000000 10.95519 62.2% 27.5 0s Explored 3364 nodes (73735 simplex iterations) in 3.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%