Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:29:09 2012 Optimize a model with 247 rows, 175 columns and 790 nonzeros Presolve time: 0.00s Presolved: 247 rows, 175 columns, 790 nonzeros Variable types: 0 continuous, 175 integer (175 binary) Found heuristic solution: objective 67.0000000 Found heuristic solution: objective 57.0000000 Root relaxation: objective 0.000000e+00, 73 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 51 57.00000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s 0 0 0.51062 0 52 49.00000 0.51062 99.0% - 0s H 0 0 48.0000000 0.51062 98.9% - 0s 0 0 1.24308 0 54 48.00000 1.24308 97.4% - 0s H 0 0 36.0000000 1.24308 96.5% - 0s 0 0 1.63474 0 54 36.00000 1.63474 95.5% - 0s 0 0 1.63671 0 55 36.00000 1.63671 95.5% - 0s 0 2 1.63765 0 55 36.00000 1.63765 95.5% - 0s * 29 29 16 33.0000000 3.02932 90.8% 31.1 0s * 62 52 19 32.0000000 3.75760 88.3% 29.4 0s * 95 67 21 30.0000000 6.21882 79.3% 29.5 0s H 189 134 29.0000000 7.86063 72.9% 30.4 0s * 190 134 17 28.0000000 7.86063 71.9% 30.3 0s H 324 157 27.0000000 9.27579 65.6% 28.1 0s * 376 177 14 26.0000000 9.69444 62.7% 27.5 0s * 486 177 9 25.0000000 11.69167 53.2% 26.9 0s H 602 170 24.0000000 12.29386 48.8% 26.2 0s Cutting planes: Gomory: 4 Zero half: 5 Explored 1618 nodes (33849 simplex iterations) in 0.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%