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add option to validate result of PDR. Add PDR tactic. Add fixedpoint parsing

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2012-11-17 20:47:49 +01:00
parent 68ae5d434c
commit 50385e7e29
32 changed files with 836 additions and 393 deletions
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26
src/api/python/z3.py
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@ -6102,7 +6102,6 @@ class Fixedpoint(Z3PPObject):
"""Add property to predicate for the level'th unfolding. -1 is treated as infinity (infinity)"""
Z3_fixedpoint_add_cover(self.ctx.ref(), self.fixedpoint, level, predicate.ast, property.ast)
def register_relation(self, *relations):
"""Register relation as recursive"""
relations = _get_args(relations)
@ -6119,16 +6118,35 @@ class Fixedpoint(Z3PPObject):
args[i] = representations[i]
Z3_fixedpoint_set_predicate_representation(self.ctx.ref(), self.fixedpoint, f.ast, sz, args)
def parse_string(self, s):
"""Parse rules and queries from a string"""
return AstVector(Z3_fixedpoint_from_string(self.ctx.ref(), self.fixedpoint, s), self.ctx)
def parse_file(self, f):
"""Parse rules and queries from a file"""
return AstVector(Z3_fixedpoint_from_file(self.ctx.ref(), self.fixedpoint, f), self.ctx)
def get_rules(self):
"""retrieve rules that have been added to fixedpoint context"""
return AstVector(Z3_fixedpoint_get_rules(self.ctx.ref(), self.fixedpoint), self.ctx)
def __repr__(self):
"""Return a formatted string with all added rules and constraints."""
return self.sexpr()
def sexpr(self):
"""Return a formatted string (in Lisp-like format) with all added constraints. We say the string is in s-expression format.
"""Return a formatted string (in Lisp-like format) with all added constraints. We say the string is in s-expression format.
"""
return Z3_fixedpoint_to_string(self.ctx.ref(), self.fixedpoint, 0, (Ast * 0)())
return Z3_fixedpoint_to_string(self.ctx.ref(), self.fixedpoint, 0, (Ast * 0)())
def to_string(self, queries):
"""Return a formatted string (in Lisp-like format) with all added constraints.
We say the string is in s-expression format.
Include also queries.
"""
args, len = _to_ast_array(queries)
return Z3_fixedpoint_to_string(self.ctx.ref(), self.fixedpoint, len, args)
def statistics(self):
"""Return statistics for the last `query()`.
"""