{"errors":[{"component":"general","errorCode":"3944","formattedMessage":"Warning: CHC: Underflow (resulting value less than 0) happens here.
Counterexample:
arr = []
a = 0
x = 0

Transaction trace:
test.constructor()
State: arr = []
test.f(0, 0)
 --> A:8:7:
  |
8 | \t\t\t\t\t\t--x;
  | \t\t\t\t\t\t^^^

","message":"CHC: Underflow (resulting value less than 0) happens here.
Counterexample:
arr = []
a = 0
x = 0

Transaction trace:
test.constructor()
State: arr = []
test.f(0, 0)","severity":"warning","sourceLocation":{"end":177,"file":"A","start":174},"type":"Warning"}],"sources":{"A":{"id":0}}}