Pulp problem _dummy

[Ana Dionísio]

Hello!

I'm using pulp for linear optimization but when I run my code I get the following output:

Central Optimization:
MAXIMIZE
0*__dummy + 0

SUBJECT TO
_C1: 2 T0 >= 0

_C2: 2 T0 <= 0

_C3: 0.0686928673545 Frigorifico0 >= 0

_C4: 0.0686928673545 Frigorifico0 <= 0

_C5: 2 Termo0 >= 0

_C6: 2 Termo0 <= 0

_C7: 0.0686928673545 F0 >= 0

_C8: 0.0686928673545 F0 <= 0

_C9: 2 T1 >= 0

_C10: 2 T1 <= 0

_C11: 0.0686928673545 Frigorifico1 >= 0

_C12: 0.0686928673545 Frigorifico1 <= 0

_C13: 2 Termo0 >= 0

_C14: 2 Termo0 <= 0

_C15: 0.0686928673545 F0 >= 0

_C16: 0.0686928673545 F0 <= 0

_C17: - AC0 - VE0 - 2 T0 - 0.0686928673545 F0 - AC1 - VE1
- 2 T1 - 0.0686928673545 F1 >= -15

VARIABLES
AC0 <= 2.75 Continuous
VE0 = 0 Continuous
0 <= T0 <= 1 Integer
0 <= F0 <= 1 Integer
AC1 <= 2.75 Continuous
VE1 = 0 Continuous
0 <= T1 <= 1 Integer
0 <= F1 <= 1 Integer
__dummy = 0 Continuous

I don't know if this is enough information for you but if you couold help me I would be very very grateful

Thank you!