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9fa8adb742
The previous commit reduced unions by recursively inserting each disjunct into the other operand, which recurses with depth proportional to the union width. On wide range-product unions (z3test 5721 sub#2) that overflowed the stack (exit 0xC00000FD), turning a timeout into a crash. Reformulate mk_union_core to flatten both operands into a disjunct set via an explicit worklist and reduce it with add_union_elem (a bounded loop applying subsumption, prefix factoring and same-condition ITE merge against every existing member). No width-proportional recursion remains. 5731 stays fixed (0.04s), 5728 stays at ~0.02s, 5721 sub#2 no longer crashes (cleanly times out as before), 92/92 unit tests pass. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> |
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| .. | ||
| ackermannization | ||
| api | ||
| ast | ||
| cmd_context | ||
| math | ||
| model | ||
| muz | ||
| nlsat | ||
| opt | ||
| params | ||
| parsers | ||
| qe | ||
| sat | ||
| shell | ||
| smt | ||
| solver | ||
| tactic | ||
| test | ||
| util | ||
| CMakeLists.txt | ||