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Interpolation API: infrastructure fixes and .NET API

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Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
This commit is contained in:
Christoph M. Wintersteiger 2014-10-08 21:01:27 +01:00
parent 4370d40dd8
commit b03a9d3f0a
15 changed files with 1223 additions and 949 deletions
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14
src/api/python/z3.py
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@ -7253,19 +7253,19 @@ def parse_smt2_file(f, sorts={}, decls={}, ctx=None):
dsz, dnames, ddecls = _dict2darray(decls, ctx)
return _to_expr_ref(Z3_parse_smtlib2_file(ctx.ref(), f, ssz, snames, ssorts, dsz, dnames, ddecls), ctx)
def Interp(a,ctx=None):
def Interpolant(a,ctx=None):
"""Create an interpolation operator.
The argument is an interpolation pattern (see tree_interpolant).
>>> x = Int('x')
>>> print Interp(x>0)
>>> print Interpolant(x>0)
interp(x > 0)
"""
ctx = _get_ctx(_ctx_from_ast_arg_list([a], ctx))
s = BoolSort(ctx)
a = s.cast(a)
return BoolRef(Z3_mk_interp(ctx.ref(), a.as_ast()), ctx)
return BoolRef(Z3_mk_interpolant(ctx.ref(), a.as_ast()), ctx)
def tree_interpolant(pat,p=None,ctx=None):
"""Compute interpolant for a tree of formulas.
@ -7304,10 +7304,10 @@ def tree_interpolant(pat,p=None,ctx=None):
>>> x = Int('x')
>>> y = Int('y')
>>> print tree_interpolant(And(Interp(x < 0), Interp(y > 2), x == y))
>>> print tree_interpolant(And(Interpolant(x < 0), Interpolant(y > 2), x == y))
[Not(x >= 0), Not(y <= 2)]
>>> g = And(Interp(x<0),x<2)
>>> g = And(Interpolant(x<0),x<2)
>>> try:
... print tree_interpolant(g).sexpr()
... except ModelRef as m:
@ -7346,7 +7346,7 @@ def binary_interpolant(a,b,p=None,ctx=None):
print binary_interpolant(x<0,x>2)
Not(x >= 0)
"""
f = And(Interp(a),b)
f = And(Interpolant(a),b)
return tree_interpolant(f,p,ctx)[0]
def sequence_interpolant(v,p=None,ctx=None):
@ -7375,6 +7375,6 @@ def sequence_interpolant(v,p=None,ctx=None):
"""
f = v[0]
for i in range(1,len(v)):
f = And(Interp(f),v[i])
f = And(Interpolant(f),v[i])
return tree_interpolant(f,p,ctx)