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Removed unnecessary call in solveDPLL

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Dimitri Lozeve 2016-08-04 20:11:47 +01:00
parent 9e0c91d0e3
commit 77874cd68a
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1 changed files with 1 additions and 2 deletions
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Sat.hs
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@ -219,8 +219,7 @@ solveDPLL (f, asst)
let (f', asst') = (pureLitRule . unitPropagate) (f, asst) in
case solveDPLL (evalLit lit f', lit:asst') of
SAT a -> SAT a
UNSAT -> let (f'', asst'') = (pureLitRule . unitPropagate) (f, asst) in
solveDPLL (evalLit (notLit lit) f'', notLit lit : asst'')
UNSAT -> solveDPLL (evalLit (notLit lit) f', notLit lit : asst')
-- Select a literal from a given formula. This function just takes the
-- first available literal. The function head makes it unsafe, as it