Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:01:35 2013 Optimize a model with 108 rows, 81 columns and 288 nonzeros Presolve removed 36 rows and 36 columns Presolve time: 0.00s Presolved: 72 rows, 45 columns, 216 nonzeros Variable types: 9 continuous, 36 integer (36 binary) Found heuristic solution: objective 1664.0000000 Root relaxation: objective 3.640000e+02, 29 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 364.00000 0 17 1664.00000 364.00000 78.1% - 0s H 0 0 1270.0000000 364.00000 71.3% - 0s 0 0 517.30312 0 12 1270.00000 517.30312 59.3% - 0s 0 0 525.51203 0 15 1270.00000 525.51203 58.6% - 0s 0 0 532.71921 0 16 1270.00000 532.71921 58.1% - 0s 0 0 534.29346 0 15 1270.00000 534.29346 57.9% - 0s 0 0 534.35980 0 17 1270.00000 534.35980 57.9% - 0s 0 0 534.35980 0 17 1270.00000 534.35980 57.9% - 0s H 0 0 1035.0000000 534.35980 48.4% - 0s 0 2 535.50100 0 17 1035.00000 535.50100 48.3% - 0s * 23 23 15 975.0000000 562.18052 42.3% 3.7 0s H 305 99 959.0000000 659.00000 31.3% 3.1 0s Cutting planes: Gomory: 2 Implied bound: 12 MIR: 50 Explored 1305 nodes (3507 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.589999999993e+02, best bound 9.589999999993e+02, gap 0.0%