%---------------- SGGS v1.0 (IJCAR 2020 submission) ----------------%

------ Parsing...successful


------ Proving...
use I-
not ground preserving

Gamma_0: (extend-no-conflict)
  0: [f(X0,z2(X0,X1))]

Gamma_1: (extend-conflict)
  0: [f(X0,z2(X0,X1))]
  1: [~(f(b,z2(b,b)))]

Gamma_2: (move)
  0: [~(f(b,z2(b,b)))]
  1: [f(X0,z2(X0,X1))]

Gamma_3: (right-split)
  0: [~(f(b,z2(b,b)))]
  1: top(X0) != b | [f(b,z2(b,b))]
  2: top(X0) != b & top(X0) != b | [f(X0,z2(X0,b))]
  3: top(X1) != b | [f(b,z2(b,X0))]
  4: top(X1) != b & top(X0) != b & top(X0) != b | [f(X0,z2(X0,X1))]

Gamma_4: (right-split)
  0: [~(f(b,z2(b,b)))]
  1: [f(b,z2(b,b))]
  2: top(X0) != b & top(X0) != b | [f(X0,z2(X0,b))]
  3: top(X1) != b | [f(b,z2(b,X0))]
  4: top(X1) != b & top(X0) != b & top(X0) != b | [f(X0,z2(X0,X1))]

Gamma_5: (resolve)
  0: [~(f(b,z2(b,b)))]
  1: []
  2: top(X0) != b & top(X0) != b | [f(X0,z2(X0,b))]
  3: top(X1) != b | [f(b,z2(b,X0))]
  4: top(X1) != b & top(X0) != b & top(X0) != b | [f(X0,z2(X0,X1))]

SZS status Unsatisfiable