Bump count of the number of times _rule_ was used

def profile_rule(self, rule):
        """Bump count of the number of times _rule_ was used"""
        rule_str = self.reduce_string(rule)
        if rule_str not in self.profile_info:
            self.profile_info[rule_str] = 1
        else:
            self.profile_info[rule_str] += 1