Build (method = -2) #dp: 1424 Step-3' Graph: 157 vertices and 633 arcs (0.00s) Step-4' Graph: 140 vertices and 599 arcs (0.01s) #V4/#V3 = 0.89 #A4/#A3 = 0.95 Ready! (0.01s) Optimize a model with 160 rows, 600 columns and 1556 nonzeros Presolve removed 37 rows and 62 columns Presolve time: 0.01s Presolved: 123 rows, 538 columns, 1453 nonzeros Variable types: 0 continuous, 538 integer (5 binary) Found heuristic solution: objective 1815.0000000 Optimize a model with 123 rows, 538 columns and 1453 nonzeros Presolved: 123 rows, 538 columns, 1453 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.800e+02 Factor NZ : 2.942e+03 Factor Ops : 9.064e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.01252691e+04 -8.38725101e+04 7.34e+04 1.34e-01 5.63e+02 0s 1 3.63802271e+03 -4.33949182e+04 9.74e+03 4.44e-16 9.72e+01 0s 2 2.16193621e+03 -8.18492944e+03 1.27e+03 3.77e-15 1.38e+01 0s 3 1.88128300e+03 -1.11244873e+03 1.15e+02 2.11e-15 2.97e+00 0s 4 1.71598661e+03 -3.83516978e+02 6.70e+01 1.44e-15 2.03e+00 0s 5 1.49817886e+03 8.58600961e+01 3.27e+01 8.88e-16 1.34e+00 0s 6 1.19785115e+03 5.02825115e+02 8.99e+00 6.66e-16 6.49e-01 0s 7 1.09229930e+03 8.23015411e+02 3.31e+00 3.33e-16 2.51e-01 0s 8 1.04070673e+03 1.00125747e+03 3.62e-01 3.99e-16 3.66e-02 0s 9 1.03470758e+03 1.02301957e+03 3.98e-02 2.08e-16 1.08e-02 0s 10 1.03095534e+03 1.03030759e+03 2.40e-04 2.33e-16 5.96e-04 0s 11 1.03083355e+03 1.03083306e+03 4.73e-08 3.71e-16 4.48e-07 0s 12 1.03083333e+03 1.03083333e+03 5.90e-13 2.99e-16 4.76e-13 0s Barrier solved model in 12 iterations and 0.01 seconds Optimal objective 1.03083333e+03 Root relaxation: objective 1.030833e+03, 166 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1030.83333 0 8 1815.00000 1030.83333 43.2% - 0s H 0 0 1032.0000000 1030.83333 0.11% - 0s H 0 0 1031.0000000 1030.83333 0.02% - 0s Explored 0 nodes (240 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.031000000000e+03, best bound 1.031000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.02 seconds Total run time: 0.04 seconds Objective: 1031 Solution: 117 x [7] 8 x [7, 14] 41 x [18] 134 x [6, 18] 73 x [11, 14] 1 x [11, 14, 19] 7 x [11, 14, 19, 19] 88 x [4, 11, 19] 51 x [10, 14] 62 x [10, 12] 14 x [20] 58 x [6, 20] 54 x [15, 16] 41 x [1, 8] 63 x [1, 2] 1 x [1, 16] 80 x [3, 17] 112 x [9, 17] 1 x [13, 17] 1 x [5, 8] 14 x [2, 13] 3 x [2, 2] 7 x [16, 16, 16]