generalize proof reconstruction code; first step towards support for nonnumeric formula names, needed for E 1.2

tuning

handle relevance filter corner cases more gracefully; e.g. the minimizer selects 15 facts but "max_relevant = 14"

remove more clutter related to old "fast_descrs" optimization

Sledgehammer should be called in "prove" mode; otherwise the proof text won't fit into the proof document

added a timeout around "try" call in Mirabelle

adapt examples to latest Nitpick changes + speed them up a little bit

tuning

eliminate more clutter related to "fast_descrs" optimization

remove "fast_descs" option from Nitpick; the option has been unsound for over a year and is too imprecise to be of any use when made sound

fixed bug in the "fast_descrs" optimization; the bug is that two sets may actually be the same but because of the three-valued logic a different "The" or "Eps" is chosen; e.g. consider the set {1, 2}. If it is approximated in one place as {1, 2?} and in another place as {1?, 2}, then "Eps" would return 1 in the first case and 2 in the second case. This is of course wrong, because both sets potentially represent {1, 2}. The current fix has a very negative impact on precision.

speed up helper function

tuning

rename internal Sledgehammer constant

merged