Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:52 2012 Optimize a model with 249 rows, 192 columns and 812 nonzeros Presolve time: 0.00s Presolved: 249 rows, 192 columns, 812 nonzeros Variable types: 0 continuous, 192 integer (192 binary) Found heuristic solution: objective 50.0000000 Root relaxation: objective 0.000000e+00, 107 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 67 50.00000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 0 0.50793 0 68 39.00000 0.50793 98.7% - 0s H 0 0 36.0000000 0.50793 98.6% - 0s 0 0 1.00000 0 69 36.00000 1.00000 97.2% - 0s 0 0 1.24686 0 70 36.00000 1.24686 96.5% - 0s H 0 0 33.0000000 1.24686 96.2% - 0s 0 0 1.40033 0 72 33.00000 1.40033 95.8% - 0s H 0 0 32.0000000 1.40033 95.6% - 0s 0 0 1.45887 0 72 32.00000 1.45887 95.4% - 0s 0 0 1.46623 0 73 32.00000 1.46623 95.4% - 0s 0 2 1.47756 0 73 32.00000 1.47756 95.4% - 0s H 27 27 26.0000000 4.23046 83.7% 26.6 0s * 31 26 22 24.0000000 4.23046 82.4% 24.1 0s * 51 32 13 21.0000000 4.30365 79.5% 23.7 0s * 370 74 17 20.0000000 11.68125 41.6% 19.3 0s * 412 63 11 19.0000000 12.24557 35.5% 19.5 0s Cutting planes: Gomory: 4 Zero half: 3 Mod-K: 1 Explored 710 nodes (13056 simplex iterations) in 0.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%