Build (method = -2) #dp: 333 Step-3' Graph: 32 vertices and 169 arcs (0.00s) Step-4' Graph: 18 vertices and 141 arcs (0.00s) #V4/#V3 = 0.56 #A4/#A3 = 0.83 Ready! (0.00s) Optimize a model with 43 rows, 142 columns and 394 nonzeros Presolve removed 9 rows and 11 columns Presolve time: 0.00s Presolved: 34 rows, 131 columns, 288 nonzeros Variable types: 0 continuous, 131 integer (113 binary) Found heuristic solution: objective 13.0000000 Optimize a model with 34 rows, 131 columns and 288 nonzeros Presolved: 34 rows, 131 columns, 288 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.450e+02 Factor NZ : 3.660e+02 Factor Ops : 4.606e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.92035555e+01 -3.63803792e+01 3.95e+01 7.19e-02 1.00e+00 0s 1 1.84963127e+01 -8.36823811e+00 8.02e-01 3.05e-16 1.17e-01 0s 2 1.27224963e+01 1.08291847e+01 2.68e-03 3.59e-03 7.44e-03 0s 3 1.25015335e+01 1.24970352e+01 1.22e-14 2.22e-16 1.72e-05 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 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 13 Solution: 1 x [16, 20] 1 x [3, 17] 1 x [11, 13] 1 x [10, 25] 1 x [9, 24] 1 x [4, 23] 1 x [15, 22] 1 x [8] 1 x [7, 12] 1 x [6, 19] 1 x [1, 14] 1 x [5, 18] 1 x [2, 21]