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add array-ext to externally exposed functions to enable interpolants with arrays to be usable in feedback loops with Z3. Addresses one issue raised in #292

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-11-07 16:42:13 -08:00
parent 8d1fa3ae50
commit 4685a5f8ba
12 changed files with 71 additions and 16 deletions
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7
src/api/python/z3.py
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@ -4143,6 +4143,13 @@ def K(dom, v):
v = _py2expr(v, ctx)
return ArrayRef(Z3_mk_const_array(ctx.ref(), dom.ast, v.as_ast()), ctx)
def Ext(a, b):
"""Return extensionality index for arrays.
"""
if __debug__:
_z3_assert(is_array(a) and is_array(b))
return _to_expr_ref(Z3_mk_array_ext(ctx.ref(), a.as_ast(), b.as_ast()));
def is_select(a):
"""Return `True` if `a` is a Z3 array select application.

2
src/api/python/z3printer.py
View file

@ -31,7 +31,7 @@ _z3_op_to_str = {
Z3_OP_BASHR : '>>', Z3_OP_BSHL : '<<', Z3_OP_BLSHR : 'LShR',
Z3_OP_CONCAT : 'Concat', Z3_OP_EXTRACT : 'Extract', Z3_OP_BV2INT : 'BV2Int',
Z3_OP_ARRAY_MAP : 'Map', Z3_OP_SELECT : 'Select', Z3_OP_STORE : 'Store',
Z3_OP_CONST_ARRAY : 'K',
Z3_OP_CONST_ARRAY : 'K', Z3_OP_ARRAY_EXT : 'Ext',
Z3_OP_PB_AT_MOST : 'AtMost', Z3_OP_PB_LE : 'PbLe', Z3_OP_PB_GE : 'PbGe'
}