{
    "errors":
    [
        {
            "component": "general",
            "errorCode": "9302",
            "formattedMessage": "Warning: Return value of low-level calls not used.
 --> A:7:7:
  |
7 | \t\t\t\t\t\t_a.call(\"\");
  | \t\t\t\t\t\t^^^^^^^^^^^

",
            "message": "Return value of low-level calls not used.",
            "severity": "warning",
            "sourceLocation":
            {
                "end": 143,
                "file": "A",
                "start": 132
            },
            "type": "Warning"
        },
        {
            "component": "general",
            "errorCode": "6328",
            "formattedMessage": "Warning: CHC: Assertion violation happens here.
Counterexample:
x = 0
_a = 0x0

Transaction trace:
test.constructor()
State: x = 0
test.f(0x0)
    _a.call(\"\") -- untrusted external call
 --> A:8:7:
  |
8 | \t\t\t\t\t\tassert(x == 10);
  | \t\t\t\t\t\t^^^^^^^^^^^^^^^

",
            "message": "CHC: Assertion violation happens here.
Counterexample:
x = 0
_a = 0x0

Transaction trace:
test.constructor()
State: x = 0
test.f(0x0)
    _a.call(\"\") -- untrusted external call",
            "severity": "warning",
            "sourceLocation":
            {
                "end": 166,
                "file": "A",
                "start": 151
            },
            "type": "Warning"
        }
    ],
    "sources":
    {
        "A":
        {
            "id": 0
        }
    }
}