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Add lemma: y = x[h:l] & y != 0 ==> x >= 2^l

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Jakob Rath 2023-08-16 09:57:45 +02:00
parent afc292e5db
commit bc6f0729a0
4 changed files with 57 additions and 3 deletions
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src/math/polysat/slicing.h
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@ -320,6 +320,9 @@ namespace polysat {
pvar mk_concat(unsigned num_args, pvar const* args) { return mk_concat(num_args, args, null_var); }
pvar mk_concat(std::initializer_list<pvar> args);
// Find hi, lo such that x = src[hi:lo].
bool is_extract(pvar x, pvar src, unsigned& out_hi, unsigned& out_lo);
// Track value assignments to variables (and propagate to subslices)
// (could generalize to fixed bits, then we need a way to merge interpreted enodes)
void add_value(pvar v, rational const& value);