Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:32:38 2012 Optimize a model with 487 rows, 461 columns and 1676 nonzeros Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 487 rows, 442 columns, 1657 nonzeros Variable types: 0 continuous, 442 integer (441 binary) Found heuristic solution: objective 87.0000000 Root relaxation: objective 0.000000e+00, 277 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 0 189 87.00000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.40947 0 190 64.00000 0.40947 99.4% - 0s H 0 0 58.0000000 0.40947 99.3% - 0s 0 0 1.00000 0 193 58.00000 1.00000 98.3% - 0s H 0 0 54.0000000 1.00000 98.1% - 0s 0 0 1.00000 0 192 54.00000 1.00000 98.1% - 0s H 0 0 50.0000000 1.00000 98.0% - 0s 0 0 1.00000 0 192 50.00000 1.00000 98.0% - 0s 0 0 1.00000 0 189 50.00000 1.00000 98.0% - 0s H 0 0 41.0000000 1.00000 97.6% - 0s H 0 0 38.0000000 1.00000 97.4% - 0s 0 2 1.00000 0 189 38.00000 1.00000 97.4% - 0s H 27 27 33.0000000 1.71123 94.8% 50.5 0s * 44 35 24 18.0000000 1.71123 90.5% 35.2 0s H 81 38 16.0000000 1.76493 89.0% 28.7 0s * 415 101 15 15.0000000 6.83673 54.4% 29.2 0s Cutting planes: Gomory: 3 Explored 910 nodes (29519 simplex iterations) in 1.23 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%