Build (method = -2) #dp: 1676 Step-3' Graph: 138 vertices and 853 arcs (0.01s) Step-4' Graph: 110 vertices and 797 arcs (0.01s) #V4/#V3 = 0.80 #A4/#A3 = 0.93 Ready! (0.01s) Optimize a model with 146 rows, 798 columns and 2189 nonzeros Presolve removed 24 rows and 35 columns Presolve time: 0.01s Presolved: 122 rows, 763 columns, 2124 nonzeros Variable types: 0 continuous, 763 integer (40 binary) Found heuristic solution: objective 358.0000000 Found heuristic solution: objective 318.0000000 Optimize a model with 122 rows, 763 columns and 2124 nonzeros Presolved: 122 rows, 763 columns, 2124 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.243e+03 Factor NZ : 3.585e+03 Factor Ops : 1.370e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.87800922e+03 -1.07241978e+04 8.64e+03 2.59e-01 6.40e+01 0s 1 1.38520466e+03 -4.95740541e+03 1.93e+03 4.44e-16 1.50e+01 0s 2 4.74360436e+02 -2.02645170e+03 1.93e+02 1.55e-15 2.47e+00 0s 3 3.48605290e+02 -3.45640200e+02 3.03e+01 5.55e-16 5.27e-01 0s 4 2.58679211e+02 -6.28753937e+01 4.26e+00 4.44e-16 2.16e-01 0s 5 2.29924801e+02 7.58928606e+01 2.31e+00 2.84e-16 1.03e-01 0s 6 2.06249498e+02 1.32532288e+02 1.04e+00 3.05e-16 4.89e-02 0s 7 1.95424529e+02 1.63443689e+02 4.09e-01 2.43e-16 2.11e-02 0s 8 1.89785681e+02 1.79028828e+02 1.00e-01 2.91e-16 7.04e-03 0s 9 1.88007856e+02 1.85277773e+02 2.21e-02 2.21e-16 1.78e-03 0s 10 1.87503139e+02 1.87493130e+02 2.31e-05 2.64e-16 6.49e-06 0s 11 1.87500003e+02 1.87499993e+02 1.50e-13 3.33e-16 6.49e-09 0s 12 1.87500000e+02 1.87500000e+02 9.95e-14 3.49e-16 6.49e-12 0s Barrier solved model in 12 iterations and 0.01 seconds Optimal objective 1.87500000e+02 Root relaxation: objective 1.875000e+02, 262 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 187.50000 0 2 318.00000 187.50000 41.0% - 0s H 0 0 188.0000000 187.50000 0.27% - 0s Explored 0 nodes (497 simplex iterations) in 0.05 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.880000000000e+02, best bound 1.880000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.05 seconds Total run time: 0.07 seconds Objective: 188 Solution: 9 x [18, 36] 9 x [11, 36] 16 x [4, 22, 36] 3 x [27] 8 x [18, 27] 7 x [24] 3 x [2, 24] 1 x [18, 24] 1 x [1, 24] 8 x [1, 1, 24] 7 x [10, 17] 1 x [10, 13] 6 x [7, 13] 1 x [21, 34] 3 x [33, 35] 3 x [21, 30] 2 x [28, 35] 1 x [23, 28] 14 x [21, 28] 10 x [3, 20] 4 x [12, 32] 1 x [12, 22, 32] 10 x [8, 15] 1 x [8, 14] 6 x [8, 9] 11 x [6, 9] 7 x [16, 31] 9 x [14, 31] 8 x [3, 31] 7 x [29, 29] 1 x [25] 1 x [9, 10, 10] 1 x [5, 7, 21] 2 x [10, 19, 26] 4 x [10, 23, 32] 2 x [23, 32, 32]