def test_msat_converter_on_msat_error(self):
import mathsat
import _mathsat
from pysmt.solvers.msat import MathSAT5Solver, MSatConverter
env = get_env()
msat = MathSAT5Solver(env, logic=QF_UFLIRA)
new_converter = MSatConverter(env, msat.msat_env)
def walk_plus(formula, args):
res = mathsat.MSAT_MAKE_ERROR_TERM()
return res
# Replace the function used to compute the Plus()
# with one that returns a msat_error
new_converter.set_function(walk_plus, op.PLUS)
r, s = FreshSymbol(REAL), FreshSymbol(REAL)
f1 = GT(r, s)
f2 = Plus(r, s)
t1 = new_converter.convert(f1)
self.assertFalse(mathsat.MSAT_ERROR_TERM(t1))
with self.assertRaises(InternalSolverError):
new_converter.convert(f2)
def convert(self, formula):
"""Convert a PySMT formula into a MathSat Term.
This function might throw a InternalSolverError exception if
an error during conversion occurs.
"""
res = self.walk(formula)
if mathsat.MSAT_ERROR_TERM(res):
msat_msg = mathsat.msat_last_error_message(self.msat_env)
raise InternalSolverError(msat_msg)
return res
def test_msat_converter_on_msat_error(self):
import mathsat
from pysmt.solvers.msat import MathSAT5Solver, MSatConverter
env = get_env()
msat = MathSAT5Solver(env, logic=QF_UFLIRA)
class NewConverter(MSatConverter):
def walk_plus(self, formula, args, **kwargs):
res = mathsat.MSAT_MAKE_ERROR_TERM()
return res
new_converter = NewConverter(env, msat.msat_env)
r, s = FreshSymbol(REAL), FreshSymbol(REAL)
f1 = GT(r, s)
f2 = Plus(r, s)
t1 = new_converter.convert(f1)
self.assertFalse(mathsat.MSAT_ERROR_TERM(t1))
with self.assertRaises(InternalSolverError):
new_converter.convert(f2)