Copyright (c) 2007 - 2013, Institute for Formal Models and Verification, Johannes Kepler University, Linz, Austria. Permission is hereby granted, free of charge, to use this software for evaluation and research purposes. This license does not allow this software to be used in a commercial context. It is further prohibited to use this software or a substantial portion of it in a competition or a similar competetive event, such as the SAT, SMT or QBF competitions or evaluations, without explicit written permission by the copyright holder. However, competition organizers are allowed to use this software as part of the evaluation process of a particular competition, evaluation or competetive event, if the copyright holder of this software submitted this software to this particular competition, evaluation or event explicitly. This permission of using the software as part of a submission by the copyright holder to a competition, evaluation or competive event is only granted for one year and only for one particular instance of the competition to which this software was submitted by the copyright holder. If a competition, evaluation or competetive event has multiple tracks, categories or sub-competitions, this license is only granted for the tracks respectively categories or sub-competitions, to which the software was explicitly submitted by the copyright holder. All other usage is reserved. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.