Minisat (u.66dc398d3fb39e53f228131aa7934c8b.minisat.0.6.doc.minisat.Minisat)

Sourcetype t

An instance of minisat (stateful)

Sourcetype 'a printer = Format.formatter -> 'a -> unit

Sourcemodule Lit : sig ... end

Sourcetype assumptions = Lit.t array

Sourceval create : unit -> t

Create a fresh solver state.

Sourceval okay : t -> bool

true if the solver isn't known to be in an unsat state

since 0.6

Sourceexception Unsat

Sourceval ensure_lit_exists : t -> Lit.t -> unit

Make sure the solver decides this literal.

since 0.6

Sourceval add_clause_l : t -> Lit.t list -> unit

Add a clause (as a list of literals) to the solver state.

raises Unsat
if the problem is unsat.

Sourceval add_clause_a : t -> Lit.t array -> unit

Add a clause (as an array of literals) to the solver state.

raises Unsat
if the problem is unsat.

Sourceval pp_clause : Lit.t list printer

Sourceval simplify : t -> unit

Perform simplifications on the solver state. Speeds up later manipulations on the solver state, e.g. calls to solve.

raises Unsat
if the problem is unsat.

Sourceval solve : ?assumptions:assumptions -> t -> unit

Check whether the current solver state is satisfiable, additionally assuming that the literals provided in assumptions are assigned to true. After solve terminates (raising Unsat or not), the solver state is unchanged: the literals in assumptions are only considered to be true for the duration of the query.

raises Unsat
if the problem is unsat.

Sourcetype value =

| V_undef
| V_true
| V_false

Sourceval string_of_value : value -> string

since 0.5

Sourceval pp_value : value printer

since 0.5

Sourceval value : t -> Lit.t -> value

Returns the assignation of a literal in the solver state. This must only be called after a call to solve that returned successfully without raising Unsat.

Sourceval value_at_level_0 : t -> Lit.t -> value

Returns the assignment level for this literal at level 0, if assigned there, or V_undef. If lit is not assigned at level 0, this returns V_undef even when the literal has a value in the current model.

since 0.6

Sourceval unsat_core : t -> Lit.t array

Returns the subset of assumptions of a solver that returned "unsat" when called with solve ~assumptions s.

since 0.6

Sourceval set_verbose : t -> int -> unit

Verbose mode.

Sourceval interrupt : t -> unit

Interrupt the solver, typically from another thread.

since 0.6

Sourceval clear_interrupt : t -> unit

Clear interrupt flag so that we can use the solver again.

since 0.6

Sourceval n_clauses : t -> int

since 0.6

Sourceval n_vars : t -> int

since 0.6

Sourceval n_conflicts : t -> int

since 0.6

Sourcemodule Debug : sig ... end