Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:19 2012 Optimize a model with 442 rows, 441 columns and 1951 nonzeros Presolve removed 252 rows and 216 columns Presolve time: 0.01s Presolved: 190 rows, 225 columns, 1684 nonzeros Variable types: 19 continuous, 206 integer (206 binary) Root relaxation: objective 2.334218e+02, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 233.42178 0 16 - 233.42178 - - 0s H 0 0 317.0000000 233.42178 26.4% - 0s H 0 0 302.0000000 233.42178 22.7% - 0s 0 0 245.24658 0 14 302.00000 245.24658 18.8% - 0s 0 0 245.27380 0 16 302.00000 245.27380 18.8% - 0s 0 0 245.30252 0 28 302.00000 245.30252 18.8% - 0s 0 0 245.30769 0 11 302.00000 245.30769 18.8% - 0s 0 0 246.66667 0 12 302.00000 246.66667 18.3% - 0s 0 0 246.66667 0 12 302.00000 246.66667 18.3% - 0s 0 0 246.66667 0 12 302.00000 246.66667 18.3% - 0s 0 2 247.00000 0 12 302.00000 247.00000 18.2% - 0s * 14 10 13 285.0000000 249.36464 12.5% 10.6 0s * 55 23 21 284.0000000 252.00000 11.3% 8.3 0s H 84 35 282.0000000 255.00000 9.57% 7.8 0s * 189 40 13 281.0000000 261.30845 7.01% 8.3 0s H 352 12 280.0000000 268.69531 4.04% 7.9 0s Cutting planes: Gomory: 2 Cover: 30 Implied bound: 21 Clique: 1 MIR: 12 Explored 372 nodes (3050 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.800000000000e+02, best bound 2.800000000000e+02, gap 0.0%