Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:16:31 2012 Optimize a model with 345 rows, 259 columns and 1119 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 345 rows, 258 columns, 1118 nonzeros Variable types: 0 continuous, 258 integer (257 binary) Found heuristic solution: objective 72.0000000 Root relaxation: objective 0.000000e+00, 137 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 85 72.00000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.67529 0 86 64.00000 0.67529 98.9% - 0s H 0 0 63.0000000 0.67529 98.9% - 0s 0 0 1.26473 0 88 63.00000 1.26473 98.0% - 0s H 0 0 60.0000000 1.26473 97.9% - 0s 0 0 1.27857 0 89 60.00000 1.27857 97.9% - 0s 0 2 1.29319 0 89 60.00000 1.29319 97.8% - 0s * 42 42 25 34.0000000 4.19677 87.7% 26.6 0s * 154 100 17 32.0000000 7.86724 75.4% 26.2 0s * 158 89 19 31.0000000 7.86724 74.6% 25.8 0s * 194 110 16 30.0000000 9.03667 69.9% 27.2 0s * 335 142 13 29.0000000 11.41944 60.6% 25.1 0s Explored 2137 nodes (48463 simplex iterations) in 1.89 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%