Gurobi 5.0.1 (linux64) logging started Wed Nov 28 03:51:18 2012 Optimize a model with 290 rows, 289 columns and 1312 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 290 rows, 288 columns, 1536 nonzeros Variable types: 16 continuous, 272 integer (272 binary) Found heuristic solution: objective 368.0000000 Found heuristic solution: objective 332.0000000 Root relaxation: objective 2.250000e+00, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.25000 0 20 332.00000 2.25000 99.3% - 0s 0 0 18.37500 0 30 332.00000 18.37500 94.5% - 0s 0 0 18.46875 0 44 332.00000 18.46875 94.4% - 0s H 0 0 44.0000000 18.46875 58.0% - 0s 0 0 18.46875 0 48 44.00000 18.46875 58.0% - 0s 0 0 18.46875 0 16 44.00000 18.46875 58.0% - 0s 0 0 18.46875 0 16 44.00000 18.46875 58.0% - 0s 0 0 18.46875 0 16 44.00000 18.46875 58.0% - 0s 0 0 18.46875 0 16 44.00000 18.46875 58.0% - 0s 0 0 18.46875 0 16 44.00000 18.46875 58.0% - 0s 0 0 18.46875 0 22 44.00000 18.46875 58.0% - 0s 0 0 21.33333 0 28 44.00000 21.33333 51.5% - 0s 0 0 22.28571 0 34 44.00000 22.28571 49.4% - 0s 0 0 22.28571 0 32 44.00000 22.28571 49.4% - 0s 0 0 22.28571 0 32 44.00000 22.28571 49.4% - 0s 0 0 22.28571 0 15 44.00000 22.28571 49.4% - 0s 0 0 22.28571 0 13 44.00000 22.28571 49.4% - 0s 0 0 22.28571 0 19 44.00000 22.28571 49.4% - 0s 0 0 22.28571 0 13 44.00000 22.28571 49.4% - 0s 0 0 22.28571 0 16 44.00000 22.28571 49.4% - 0s 0 0 22.28571 0 16 44.00000 22.28571 49.4% - 0s 0 2 25.50000 0 16 44.00000 25.50000 42.0% - 0s * 87 63 26 41.0000000 28.00000 31.7% 6.6 0s * 285 145 31 40.0000000 28.00000 30.0% 7.2 0s * 344 164 19 39.0000000 28.00000 28.2% 7.0 0s 15224 2096 infeasible 32 39.00000 37.00000 5.13% 7.9 5s 31949 1608 cutoff 29 39.00000 37.00000 5.13% 8.4 10s 46629 693 cutoff 30 39.00000 37.00000 5.13% 8.6 15s Cutting planes: Learned: 3 Gomory: 20 Implied bound: 63 Clique: 4 MIR: 33 Zero half: 1 Explored 56307 nodes (489599 simplex iterations) in 18.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%