Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:00:51 2013 Optimize a model with 45 rows, 36 columns and 120 nonzeros Presolve removed 15 rows and 15 columns Presolve time: 0.00s Presolved: 30 rows, 21 columns, 90 nonzeros Variable types: 6 continuous, 15 integer (15 binary) Root relaxation: objective 3.020000e+02, 14 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 302.00000 0 12 - 302.00000 - - 0s 0 0 419.64195 0 8 - 419.64195 - - 0s 0 0 428.00810 0 14 - 428.00810 - - 0s 0 0 442.58698 0 12 - 442.58698 - - 0s 0 0 442.98288 0 13 - 442.98288 - - 0s 0 0 442.98288 0 13 - 442.98288 - - 0s H 0 0 797.0000000 442.98288 44.4% - 0s 0 2 448.55497 0 13 797.00000 448.55497 43.7% - 0s * 10 10 8 747.0000000 448.55497 40.0% 5.6 0s * 38 23 9 741.0000000 510.36364 31.1% 4.1 0s * 39 18 8 681.0000000 510.36364 25.1% 4.0 0s * 78 11 7 673.0000000 549.00000 18.4% 3.7 0s Cutting planes: MIR: 34 Explored 119 nodes (483 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.730000000000e+02, best bound 6.730000000000e+02, gap 0.0%