Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:27:58 2012 Optimize a model with 485 rows, 459 columns and 1669 nonzeros Presolve removed 0 rows and 18 columns Presolve time: 0.00s Presolved: 485 rows, 441 columns, 1651 nonzeros Variable types: 0 continuous, 441 integer (440 binary) Found heuristic solution: objective 88.0000000 Root relaxation: objective 0.000000e+00, 243 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 0 185 88.00000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s 0 0 0.36972 0 186 71.00000 0.36972 99.5% - 0s H 0 0 64.0000000 0.36972 99.4% - 0s 0 0 1.00000 0 188 64.00000 1.00000 98.4% - 0s H 0 0 60.0000000 1.00000 98.3% - 0s 0 0 1.00000 0 188 60.00000 1.00000 98.3% - 0s 0 0 1.00000 0 187 60.00000 1.00000 98.3% - 0s H 0 0 40.0000000 1.00000 97.5% - 0s H 0 0 34.0000000 1.00000 97.1% - 0s 0 2 1.00000 0 185 34.00000 1.00000 97.1% - 0s H 27 27 29.0000000 3.79310 86.9% 42.3 0s H 54 36 18.0000000 3.79310 78.9% 27.9 0s * 125 60 19 17.0000000 5.76190 66.1% 24.9 0s * 346 93 13 16.0000000 8.30323 48.1% 25.1 0s * 351 73 15 15.0000000 8.30323 44.6% 25.0 0s Cutting planes: Gomory: 3 Explored 580 nodes (15470 simplex iterations) in 0.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%