+− theory Sat+− imports Main+− begin+− +− +− section {* SAT Solver *}+− +− +− +ÃÃââââ‚Ãâââ€šÂ¬Ã…¡Ãƒâ€šÃ‚¬ÃƒÆ’…¡Ã‚¬Ã…¡Ãƒâ€šÃ‚¢ÃƒÆ’‹â€ Ã¢â‚¬â„¢ end+− +− +− +− +−