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Avoid comparing unreachable constructor deployments - #1249
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Description
Fix false
--createcounterexamples from comparing concrete deployed runtimes on mutually exclusive constructor paths. Before nested runtime equivalence, check satisfiability of the combined constructor path constraints. If the solver cannot decide overlap, report that uncertainty rather than claiming a runtime counterexample. Adds the exact bytecode regression from #1179.Fixes #1179.
Checklist
nix,cabal, orghc.cabal run testfailed before starting because cabal is unavailable; the README development flow requires a Nix shell.git diff --checkpassed.