Build (method = -2) #dp: 46 Step-3' Graph: 14 vertices and 35 arcs (0.00s) Step-4' Graph: 6 vertices and 19 arcs (0.00s) #V4/#V3 = 0.43 #A4/#A3 = 0.54 Ready! (0.00s) Optimize a model with 16 rows, 20 columns and 52 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.00s Presolved: 6 rows, 10 columns, 24 nonzeros Variable types: 0 continuous, 10 integer (0 binary) Found heuristic solution: objective 79.0000000 Found heuristic solution: objective 55.0000000 Optimize a model with 6 rows, 10 columns and 24 nonzeros Presolved: 6 rows, 10 columns, 24 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.100e+01 Factor NZ : 2.100e+01 Factor Ops : 9.100e+01 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.27139720e+02 -9.80128379e+01 3.67e+01 2.22e-16 1.62e+01 0s 1 7.13213514e+01 2.61524610e+01 3.45e-04 1.67e-16 2.06e+00 0s 2 5.68258103e+01 5.09405325e+01 4.79e-06 1.11e-16 2.68e-01 0s 3 5.50491319e+01 5.48574364e+01 7.11e-15 1.11e-16 8.71e-03 0s Barrier performed 3 iterations in 0.00 seconds Objective cutoff exceeded Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.500000000000e+01, best bound 5.500000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 55 Solution: 4 x [1, 10] 11 x [2, 10] 11 x [3, 9] 8 x [4, 8] 10 x [5] 3 x [5, 10] 1 x [6, 8] 5 x [6, 9] 2 x [7, 10]