Build (method = -2) #dp: 149 Step-3' Graph: 29 vertices and 80 arcs (0.00s) Step-4' Graph: 11 vertices and 44 arcs (0.00s) #V4/#V3 = 0.38 #A4/#A3 = 0.55 Ready! (0.00s) Optimize a model with 31 rows, 45 columns and 117 nonzeros Presolve removed 15 rows and 15 columns Presolve time: 0.00s Presolved: 16 rows, 30 columns, 74 nonzeros Variable types: 0 continuous, 30 integer (0 binary) Found heuristic solution: objective 1830.0000000 Found heuristic solution: objective 1383.0000000 Optimize a model with 16 rows, 30 columns and 74 nonzeros Presolve removed 6 rows and 11 columns Presolved: 10 rows, 19 columns, 48 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.900e+01 Factor NZ : 5.500e+01 Factor Ops : 3.850e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.66897994e+03 9.23899326e+02 2.06e+02 2.22e-16 2.93e+01 0s 1 1.40865229e+03 1.30761486e+03 5.68e-14 2.22e-16 2.35e+00 0s 2 1.38730763e+03 1.36740347e+03 1.07e-14 2.22e-16 4.63e-01 0s 3 1.37760248e+03 1.37656929e+03 5.68e-14 4.86e-17 2.40e-02 0s 4 1.37750093e+03 1.37749907e+03 1.71e-11 2.22e-16 4.34e-05 0s 5 1.37750000e+03 1.37750000e+03 2.70e-13 1.11e-16 4.39e-11 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 1.37750000e+03 Root relaxation: objective 1.377500e+03, 9 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1377.50000 0 3 1383.00000 1377.50000 0.40% - 0s H 0 0 1378.0000000 1377.50000 0.04% - 0s Explored 0 nodes (9 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.378000000000e+03, best bound 1.378000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1378 Solution: 71 x [1] 229 x [2] 208 x [3] 99 x [4, 20] 105 x [5, 19] 49 x [5, 20] 17 x [6] 20 x [6, 20] 80 x [7] 38 x [7, 18] 150 x [8] 78 x [9, 17] 28 x [10, 16] 8 x [11, 13] 88 x [11, 14] 43 x [11, 15] 1 x [11, 17] 60 x [12, 17] 5 x [13, 16] 1 x [16]