Table 5: Makespan results and computer time for the studied scenarios.

Scenario Makespan [hours] Computer time [s] BB ACO BB ACO 1 14.01 13.29 1 14 2 25.51 26.33 3 56 3 38.24 38.26 14 93 4 10.84 11.30 547 28 5 18.26 19.05 1,298 112 6 24.37 29.20 3,254 186 7 36.41 38.36 8,620 357 8 40.72 43.81 19,865 800 9 56.89 62.39 23,838 2,867