YES a__fXghfXmarkfXa__fmarkXmarkgXgXmarkhXhmarkXa__fXfX2.1a__fXfhgXfmarkXmarka__fXgmarkXgXhmarkXmarkhXa__fXfX1a__f111f111h111g111mark1111a__fXfhgXfmarkXmarka__fXhmarkXmarkhXa__fXfXa__fXfhgXa__fXhgXfmarkXa__fXhmarkXhXa__fXfXtruea__fXfXfmarkXa__fXtrue1mark111f111a__f111a__fXfXfmarkXa__fXfmarkXa__fX1true1a__fXfX1false1a__fXhgXfalsea__fXfhgXfalsehmarkXhXtrue1mark111h111hmarkXhXhmarkXhX1true1AProVEAProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Statistics for single proof: 100.00 % (8 real / 0 unknown / 0 assumptions / 8 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe