Public Member Functions | |
def | __init__ |
def | __deepcopy__ |
def | __del__ (self) |
def | set (self, args, keys) |
def | help (self) |
def | param_descrs (self) |
def | assert_exprs (self, args) |
def | add (self, args) |
def | __iadd__ (self, fml) |
def | assert_and_track (self, a, p) |
def | add_soft |
def | maximize (self, arg) |
def | minimize (self, arg) |
def | push (self) |
def | pop (self) |
def | check (self, assumptions) |
def | reason_unknown (self) |
def | model (self) |
def | unsat_core (self) |
def | lower (self, obj) |
def | upper (self, obj) |
def | lower_values (self, obj) |
def | upper_values (self, obj) |
def | from_file (self, filename) |
def | from_string (self, s) |
def | assertions (self) |
def | objectives (self) |
def | __repr__ (self) |
def | sexpr (self) |
def | statistics (self) |
def | set_on_model (self, on_model) |
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def | use_pp (self) |
Data Fields | |
ctx | |
optimize | |
Optimize API provides methods for solving using objective functions and weighted soft constraints
def __init__ | ( | self, | |
ctx = None |
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) |
def __del__ | ( | self | ) |
def __deepcopy__ | ( | self, | |
memo = {} |
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) |
Definition at line 7867 of file z3py.py.
def __repr__ | ( | self | ) |
def add | ( | self, | |
args | |||
) |
Assert constraints as background axioms for the optimize solver. Alias for assert_expr.
Definition at line 7903 of file z3py.py.
Referenced by Optimize.__iadd__().
def add_soft | ( | self, | |
arg, | |||
weight = "1" , |
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id = None |
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) |
Add soft constraint with optional weight and optional identifier. If no weight is supplied, then the penalty for violating the soft constraint is 1. Soft constraints are grouped by identifiers. Soft constraints that are added without identifiers are grouped by default.
Definition at line 7940 of file z3py.py.
def assert_and_track | ( | self, | |
a, | |||
p | |||
) |
Assert constraint `a` and track it in the unsat core using the Boolean constant `p`. If `p` is a string, it will be automatically converted into a Boolean constant. >>> x = Int('x') >>> p3 = Bool('p3') >>> s = Optimize() >>> s.assert_and_track(x > 0, 'p1') >>> s.assert_and_track(x != 1, 'p2') >>> s.assert_and_track(x < 0, p3) >>> print(s.check()) unsat >>> c = s.unsat_core() >>> len(c) 2 >>> Bool('p1') in c True >>> Bool('p2') in c False >>> p3 in c True
Definition at line 7911 of file z3py.py.
def assert_exprs | ( | self, | |
args | |||
) |
Assert constraints as background axioms for the optimize solver.
Definition at line 7891 of file z3py.py.
Referenced by Optimize.add().
def assertions | ( | self | ) |
Return an AST vector containing all added constraints.
Definition at line 8039 of file z3py.py.
def check | ( | self, | |
assumptions | |||
) |
Check satisfiability while optimizing objective functions.
Definition at line 7988 of file z3py.py.
def from_file | ( | self, | |
filename | |||
) |
Parse assertions and objectives from a file
Definition at line 8031 of file z3py.py.
def from_string | ( | self, | |
s | |||
) |
Parse assertions and objectives from a string
Definition at line 8035 of file z3py.py.
def help | ( | self | ) |
def maximize | ( | self, | |
arg | |||
) |
def minimize | ( | self, | |
arg | |||
) |
def model | ( | self | ) |
Return a model for the last check().
Definition at line 8001 of file z3py.py.
Referenced by FuncInterp.translate().
def objectives | ( | self | ) |
returns set of objective functions
Definition at line 8043 of file z3py.py.
def param_descrs | ( | self | ) |
Return the parameter description set.
Definition at line 7887 of file z3py.py.
def pop | ( | self | ) |
def push | ( | self | ) |
def reason_unknown | ( | self | ) |
def set | ( | self, | |
args, | |||
keys | |||
) |
def set_on_model | ( | self, | |
on_model | |||
) |
Register a callback that is invoked with every incremental improvement to objective values. The callback takes a model as argument. The life-time of the model is limited to the callback so the model has to be (deep) copied if it is to be used after the callback
Definition at line 8062 of file z3py.py.
def sexpr | ( | self | ) |
Return a formatted string (in Lisp-like format) with all added constraints. We say the string is in s-expression format.
Definition at line 8051 of file z3py.py.
Referenced by Optimize.__repr__().
def statistics | ( | self | ) |
def unsat_core | ( | self | ) |
Definition at line 8008 of file z3py.py.
ctx |
Definition at line 7862 of file z3py.py.
Referenced by Optimize.__deepcopy__(), ApplyResult.__deepcopy__(), Simplifier.__deepcopy__(), Tactic.__deepcopy__(), Probe.__deepcopy__(), Probe.__eq__(), Probe.__ge__(), ApplyResult.__getitem__(), Probe.__gt__(), Probe.__le__(), Probe.__lt__(), Probe.__ne__(), Simplifier.add(), Optimize.add_soft(), Tactic.apply(), ApplyResult.as_expr(), Optimize.assert_and_track(), Optimize.assert_exprs(), Optimize.assertions(), ParserContext.from_string(), Optimize.model(), Optimize.objectives(), Optimize.param_descrs(), Simplifier.param_descrs(), Tactic.param_descrs(), Optimize.set(), Optimize.set_on_model(), Tactic.solver(), Optimize.statistics(), Optimize.unsat_core(), and Simplifier.using_params().
optimize |
Definition at line 7863 of file z3py.py.
Referenced by Optimize.__deepcopy__(), Optimize.__del__(), Optimize.add_soft(), Optimize.assert_and_track(), Optimize.assert_exprs(), Optimize.assertions(), Optimize.check(), Optimize.from_file(), Optimize.from_string(), Optimize.help(), Optimize.maximize(), Optimize.minimize(), Optimize.model(), Optimize.objectives(), Optimize.param_descrs(), Optimize.pop(), Optimize.push(), Optimize.reason_unknown(), Optimize.set(), Optimize.set_on_model(), Optimize.sexpr(), Optimize.statistics(), and Optimize.unsat_core().