def __init__(self, environment, logic, user_options=None, debugFile=None):
IncrementalTrackingSolver.__init__(self,
environment=environment,
logic=logic,
user_options=user_options)
self.msat_config = mathsat.msat_create_default_config(str(logic))
self._prepare_config(self.options, debugFile)
self.msat_env = MSatEnv(self.msat_config)
mathsat.msat_destroy_config(self.msat_config)
self.realType = mathsat.msat_get_rational_type(self.msat_env())
self.intType = mathsat.msat_get_integer_type(self.msat_env())
self.boolType = mathsat.msat_get_bool_type(self.msat_env())
self.mgr = environment.formula_manager
self.converter = MSatConverter(environment, self.msat_env)
def sequence_interpolant(self, formulas):
cfg, env = None, None
try:
self._check_logic(formulas)
if len(formulas) < 2:
raise Exception("interpolation needs at least 2 formulae")
cfg = mathsat.msat_create_config()
mathsat.msat_set_option(cfg, "interpolation", "true")
if self.logic == QF_BV:
mathsat.msat_set_option(cfg, "theory.bv.eager", "false")
mathsat.msat_set_option(cfg, "theory.eq_propagaion", "false")
env = mathsat.msat_create_env(cfg, self.msat_env())
groups = []
for f in formulas:
f = self.converter.convert(f)
g = mathsat.msat_create_itp_group(env)
mathsat.msat_set_itp_group(env, g)
groups.append(g)
mathsat.msat_assert_formula(env, f)
res = mathsat.msat_solve(env)
if res == mathsat.MSAT_UNKNOWN:
raise Exception("error in mathsat interpolation: %s" %
mathsat.msat_last_error_message(env))
if res == mathsat.MSAT_SAT:
return None
pysmt_ret = []
for i in xrange(1, len(groups)):
itp = mathsat.msat_get_interpolant(env, groups[:i])
f = self.converter.back(itp)
pysmt_ret.append(f)
return pysmt_ret
finally:
if cfg:
mathsat.msat_destroy_config(cfg)
if env:
mathsat.msat_destroy_env(env)
def __init__(self, environment, logic=None, algorithm='fm'):
"""Initialize the Quantifier Eliminator using 'fm' or 'lw'.
fm: Fourier-Motzkin (default)
lw: Loos-Weisspfenning
"""
if algorithm not in ['fm', 'lw']:
raise ValueError("Algorithm can be either 'fm' or 'lw'")
QuantifierEliminator.__init__(self)
IdentityDagWalker.__init__(self, env=environment)
self.msat_config = mathsat.msat_create_default_config("QF_LRA")
self.msat_env = MSatEnv(self.msat_config)
mathsat.msat_destroy_config(self.msat_config)
self.set_function(self.walk_identity, op.SYMBOL, op.REAL_CONSTANT,
op.BOOL_CONSTANT, op.INT_CONSTANT)
self.logic = logic
self.algorithm = algorithm
self.converter = MSatConverter(environment, self.msat_env)
def sequence_interpolant(self, formulas):
cfg, env = None, None
try:
self._check_logic(formulas)
if len(formulas) < 2:
raise Exception("interpolation needs at least 2 formulae")
cfg = mathsat.msat_create_config()
mathsat.msat_set_option(cfg, "interpolation", "true")
if self.logic == QF_BV:
mathsat.msat_set_option(cfg, "theory.bv.eager", "false")
mathsat.msat_set_option(cfg, "theory.eq_propagaion", "false")
env = mathsat.msat_create_env(cfg, self.msat_env)
groups = []
for f in formulas:
f = self.converter.convert(f)
g = mathsat.msat_create_itp_group(env)
mathsat.msat_set_itp_group(env, g)
groups.append(g)
mathsat.msat_assert_formula(env, f)
res = mathsat.msat_solve(env)
if res == mathsat.MSAT_UNKNOWN:
raise Exception("error in mathsat interpolation: %s" %
mathsat.msat_last_error_message(env))
if res == mathsat.MSAT_SAT:
return None
pysmt_ret = []
for i in xrange(1, len(groups)):
itp = mathsat.msat_get_interpolant(env, groups[:i])
f = self.converter.back(itp)
pysmt_ret.append(f)
return pysmt_ret
finally:
if cfg:
mathsat.msat_destroy_config(cfg)
if env:
mathsat.msat_destroy_env(env)
def exit(self):
if not self._destroyed:
self._destroyed = True
mathsat.msat_destroy_env(self.msat_env)
mathsat.msat_destroy_config(self.msat_config)
def _exit(self):
mathsat.msat_destroy_env(self.msat_env)
mathsat.msat_destroy_config(self.msat_config)
def exit(self):
if not self._destroyed:
self._destroyed = True
mathsat.msat_destroy_env(self.msat_env)
mathsat.msat_destroy_config(self.msat_config)