def _solve(self):
z3_solution = cast_all_objects(self._solver.model())
#import pprint; pprint.pprint(z3_solution)
self._solver.add(
self._context.evaluate(self._as_constraint(z3_solution)))
return self._extract_from(z3_solution)
def _find_atomic_changes(self):
z3_solution = cast_all_objects(self._solver.model())
if not self._context.has_reference:
self._context.mark_as_reference(z3_solution)
self._solver.pop()
self._solver.add(
self._context.evaluate(self._as_constraint(z3_solution)))
self._solver.push()
self._solver.add(self._context.atomic_diff())
self._solver.push
return self._extract_from(z3_solution)
def _cover(self):
z3_solution = cast_all_objects(self._solver.model())
#import pprint; pprint.pprint(z3_solution)
self._context.mark_as_covered(z3_solution)
self._solver.pop()
self._solver.push()
self._solver.add(self._context.evaluate(self._as_constraint(z3_solution)))
self._solver.push()
self._solver.add(self._context.coverage_constraint())
self._solver.maximize(self._context.coverage_gain())
return self._extract_from(z3_solution)