Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:03 2012 Optimize a model with 445 rows, 420 columns and 1530 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 445 rows, 398 columns, 1508 nonzeros Variable types: 0 continuous, 398 integer (397 binary) Found heuristic solution: objective 85.0000000 Root relaxation: objective 0.000000e+00, 255 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 0 171 85.00000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.36329 0 173 59.00000 0.36329 99.4% - 0s H 0 0 51.0000000 0.36329 99.3% - 0s H 0 0 47.0000000 0.36329 99.2% - 0s 0 0 0.80510 0 177 47.00000 0.80510 98.3% - 0s H 0 0 45.0000000 0.80510 98.2% - 0s 0 0 0.80510 0 177 45.00000 0.80510 98.2% - 0s H 0 0 44.0000000 0.80510 98.2% - 0s 0 2 0.80539 0 177 44.00000 0.80539 98.2% - 0s H 27 27 24.0000000 1.00000 95.8% 39.7 0s H 54 38 16.0000000 1.00000 93.8% 25.9 0s * 97 41 29 15.0000000 1.00000 93.3% 23.8 0s * 153 48 17 12.0000000 1.00000 91.7% 27.4 0s Cutting planes: Gomory: 3 Mod-K: 4 Explored 527 nodes (15366 simplex iterations) in 0.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%