Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:33:24 2012 Optimize a model with 524 rows, 140 columns and 1048 nonzeros Presolve removed 92 rows and 0 columns Presolve time: 0.00s Presolved: 432 rows, 140 columns, 926 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Found heuristic solution: objective 43.0000000 Root relaxation: objective 5.900000e+01, 195 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59.00000 0 116 43.00000 59.00000 37.2% - 0s 0 0 57.20833 0 133 43.00000 57.20833 33.0% - 0s H 0 0 45.0000000 57.20833 27.1% - 0s 0 0 56.20210 0 139 45.00000 56.20210 24.9% - 0s 0 0 54.88953 0 140 45.00000 54.88953 22.0% - 0s H 0 0 47.0000000 54.88953 16.8% - 0s 0 0 54.42339 0 137 47.00000 54.42339 15.8% - 0s 0 0 54.24036 0 140 47.00000 54.24036 15.4% - 0s 0 0 54.03159 0 140 47.00000 54.03159 15.0% - 0s 0 0 53.92855 0 139 47.00000 53.92855 14.7% - 0s 0 0 53.81378 0 139 47.00000 53.81378 14.5% - 0s 0 0 53.73305 0 140 47.00000 53.73305 14.3% - 0s 0 0 53.61774 0 140 47.00000 53.61774 14.1% - 0s 0 0 53.51099 0 140 47.00000 53.51099 13.9% - 0s 0 0 53.44263 0 139 47.00000 53.44263 13.7% - 0s 0 0 53.40884 0 140 47.00000 53.40884 13.6% - 0s 0 0 53.40884 0 139 47.00000 53.40884 13.6% - 0s 0 2 53.40884 0 139 47.00000 53.40884 13.6% - 0s * 335 91 14 48.0000000 51.48673 7.26% 38.2 0s Cutting planes: Gomory: 2 Zero half: 181 Explored 994 nodes (34111 simplex iterations) in 1.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0%