def walk_ite(self, formula, args, **kwargs):
i = args[0]
ni = self.walk_not(None, (i, ))
t = args[1]
e = args[2]
if self._get_type(formula).is_bool_type():
# Rewrite as (!i \/ t) & (i \/ e)
_args, sz = self._to_ast_array((ni, t))
or1 = z3.Z3_mk_or(self.ctx.ref(), sz, _args)
z3.Z3_inc_ref(self.ctx.ref(), or1)
_args, sz = self._to_ast_array((i, e))
or2 = z3.Z3_mk_or(self.ctx.ref(), sz, _args)
z3.Z3_inc_ref(self.ctx.ref(), or2)
_args, sz = self._to_ast_array((or1, or2))
z3term = z3.Z3_mk_and(self.ctx.ref(), sz, _args)
z3.Z3_inc_ref(self.ctx.ref(), z3term)
z3.Z3_dec_ref(self.ctx.ref(), or1)
z3.Z3_dec_ref(self.ctx.ref(), or2)
return z3term
z3term = z3.Z3_mk_ite(self.ctx.ref(), i, t, e)
z3.Z3_inc_ref(self.ctx.ref(), z3term)
return z3term
def my_and(*args):
ctx = z3.main_ctx()
_args, sz = z3._to_ast_array(args)
return z3.BoolRef(z3.Z3_mk_and(ctx.ref(), sz, _args), ctx)