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Fix bug reported at http://stackoverflow.com/questions/13923316/unprintable-solver-model

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2012-12-17 15:12:36 -08:00
parent 8c211dd4fc
commit f8014f54c1
3 changed files with 16 additions and 3 deletions
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2
RELEASE_NOTES
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@ -45,6 +45,8 @@ Version 4.3.2
unsat
We say may because 'F' may have other unsatisfiable cores.
- Fixed bug reported at http://stackoverflow.com/questions/13923316/unprintable-solver-model
Version 4.3.1
=============

11
src/api/python/z3.py
View file

@ -5122,7 +5122,10 @@ class FuncInterp(Z3PPObject):
Z3_func_interp_dec_ref(self.ctx.ref(), self.f)
def else_value(self):
"""Return the `else` value for a function interpretation.
"""
Return the `else` value for a function interpretation.
Return None if Z3 did not specify the `else` value for
this object.
>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
@ -5135,7 +5138,11 @@ class FuncInterp(Z3PPObject):
>>> m[f].else_value()
1
"""
return _to_expr_ref(Z3_func_interp_get_else(self.ctx.ref(), self.f), self.ctx)
r = Z3_func_interp_get_else(self.ctx.ref(), self.f)
if r:
return _to_expr_ref(r, self.ctx)
else:
return None
def num_entries(self):
"""Return the number of entries/points in the function interpretation `self`.

6
src/api/python/z3printer.py
View file

@ -791,7 +791,11 @@ class Formatter:
r.append(self.pp_ellipses())
break
if sz <= self.max_args:
else_pp = self.pp_expr(f.else_value(), 0, [])
else_val = f.else_value()
if else_val == None:
else_pp = to_format('#unspecified')
else:
else_pp = self.pp_expr(else_val, 0, [])
r.append(group(seq((to_format('else'), else_pp), self.pp_arrow())))
return seq3(r, '[', ']')