mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-27 02:45:51 +00:00
Code Activity

fix #1577

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-10-03 17:43:42 -07:00
parent 46cdefac4d
commit 3bc2213d54
12 changed files with 152 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/api/python/z3/z3.py
View file

@ -7311,10 +7311,15 @@ class Optimize(Z3PPObject):
"""restore to previously created backtracking point"""
Z3_optimize_pop(self.ctx.ref(), self.optimize)
def check(self):
def check(self, *assumptions):
"""Check satisfiability while optimizing objective functions."""
return CheckSatResult(Z3_optimize_check(self.ctx.ref(), self.optimize))
assumptions = _get_args(assumptions)
num = len(assumptions)
_assumptions = (Ast * num)()
for i in range(num):
_assumptions[i] = assumptions[i].as_ast()
return CheckSatResult(Z3_optimize_check(self.ctx.ref(), self.optimize, num, _assumptions))
def reason_unknown(self):
"""Return a string that describes why the last `check()` returned `unknown`."""
return Z3_optimize_get_reason_unknown(self.ctx.ref(), self.optimize)
@ -7326,6 +7331,9 @@ class Optimize(Z3PPObject):
except Z3Exception:
raise Z3Exception("model is not available")
def unsat_core(self):
return AstVector(Z3_optimize_get_unsat_core(self.ctx.ref(), self.optimize), self.ctx)
def lower(self, obj):
if not isinstance(obj, OptimizeObjective):
raise Z3Exception("Expecting objective handle returned by maximize/minimize")