(* Title: HOL/Tools/SMT2/smt2_setup_solvers.ML
Author: Sascha Boehme, TU Muenchen
Setup SMT solvers.
*)
signature SMT2_SETUP_SOLVERS =
sig
datatype z3_non_commercial =
Z3_Non_Commercial_Unknown |
Z3_Non_Commercial_Accepted |
Z3_Non_Commercial_Declined
val z3_non_commercial: unit -> z3_non_commercial
val z3_extensions: bool Config.T
end
structure SMT2_Setup_Solvers: SMT2_SETUP_SOLVERS =
struct
(* helper functions *)
fun make_avail name () = getenv (name ^ "_SOLVER") <> ""
fun make_command name () = [getenv (name ^ "_SOLVER")]
fun outcome_of unsat sat unknown solver_name line =
if String.isPrefix unsat line then SMT2_Solver.Unsat
else if String.isPrefix sat line then SMT2_Solver.Sat
else if String.isPrefix unknown line then SMT2_Solver.Unknown
else raise SMT2_Failure.SMT (SMT2_Failure.Other_Failure ("Solver " ^
quote solver_name ^ " failed. Enable SMT tracing by setting the " ^
"configuration option " ^ quote (Config.name_of SMT2_Config.trace) ^ " and " ^
"see the trace for details."))
fun on_first_line test_outcome solver_name lines =
let
val empty_line = (fn "" => true | _ => false)
val split_first = (fn [] => ("", []) | l :: ls => (l, ls))
val (l, ls) = split_first (snd (take_prefix empty_line lines))
in (test_outcome solver_name l, ls) end
(* CVC3 *)
local
fun cvc3_options ctxt = [
"-seed", string_of_int (Config.get ctxt SMT2_Config.random_seed),
"-lang", "smtlib", "-output-lang", "presentation",
"-timeout", string_of_int (Real.ceil (Config.get ctxt SMT2_Config.timeout))]
in
val cvc3: SMT2_Solver.solver_config = {
name = "cvc3_new",
class = K SMTLIB2_Interface.smtlib2C,
avail = make_avail "CVC3_NEW",
command = make_command "CVC3_NEW",
options = cvc3_options,
default_max_relevant = 400 (* FUDGE *),
supports_filter = false,
outcome =
on_first_line (outcome_of "Unsatisfiable." "Satisfiable." "Unknown."),
cex_parser = NONE,
replay = NONE }
end
(* Yices *)
val yices: SMT2_Solver.solver_config = {
name = "yices_new",
class = K SMTLIB2_Interface.smtlib2C,
avail = make_avail "YICES_NEW",
command = make_command "YICES_NEW",
options = (fn ctxt => [
"--rand-seed=" ^ string_of_int (Config.get ctxt SMT2_Config.random_seed),
"--timeout=" ^
string_of_int (Real.ceil (Config.get ctxt SMT2_Config.timeout)),
"--smtlib"]),
default_max_relevant = 350 (* FUDGE *),
supports_filter = false,
outcome = on_first_line (outcome_of "unsat" "sat" "unknown"),
cex_parser = NONE,
replay = NONE }
(* Z3 *)
datatype z3_non_commercial =
Z3_Non_Commercial_Unknown |
Z3_Non_Commercial_Accepted |
Z3_Non_Commercial_Declined
local
val accepted = member (op =) ["yes", "Yes", "YES"]
val declined = member (op =) ["no", "No", "NO"]
in
fun z3_non_commercial () =
let
val flag1 = Options.default_string @{option z3_non_commercial}
val flag2 = getenv "Z3_NON_COMMERCIAL"
in
if accepted flag1 then Z3_Non_Commercial_Accepted
else if declined flag1 then Z3_Non_Commercial_Declined
else if accepted flag2 then Z3_Non_Commercial_Accepted
else if declined flag2 then Z3_Non_Commercial_Declined
else Z3_Non_Commercial_Unknown
end
fun if_z3_non_commercial f =
(case z3_non_commercial () of
Z3_Non_Commercial_Accepted => f ()
| Z3_Non_Commercial_Declined =>
error (Pretty.string_of (Pretty.para
"The SMT solver Z3 may only be used for non-commercial applications."))
| Z3_Non_Commercial_Unknown =>
error (Pretty.string_of (Pretty.para
("The SMT solver Z3 is not activated. To activate it, set the Isabelle \
\system option \"z3_non_commercial\" to \"yes\" (e.g. via \
\the Isabelle/jEdit menu Plugin Options / Isabelle / General)."))))
end
val z3_extensions = Attrib.setup_config_bool @{binding z3_new_extensions} (K false)
local
fun z3_make_command name () = if_z3_non_commercial (make_command name)
fun z3_options ctxt =
["REFINE_INJ_AXIOM=false" (* not supported by replay *),
"-rs:" ^ string_of_int (Config.get ctxt SMT2_Config.random_seed),
"-T:" ^ string_of_int (Real.ceil (Config.get ctxt SMT2_Config.timeout)),
"-smt2"]
fun z3_on_first_or_last_line solver_name lines =
let
fun junk l =
if String.isPrefix "WARNING: Out of allocated virtual memory" l
then raise SMT2_Failure.SMT SMT2_Failure.Out_Of_Memory
else
String.isPrefix "WARNING" l orelse
String.isPrefix "ERROR" l orelse
forall Symbol.is_ascii_blank (Symbol.explode l)
val lines = filter_out junk lines
fun outcome split =
the_default ("", []) (try split lines)
|>> outcome_of "unsat" "sat" "unknown" solver_name
in
(* Starting with version 4.0, Z3 puts the outcome on the first line of the
output rather than on the last line. *)
outcome (fn lines => (hd lines, tl lines))
handle SMT2_Failure.SMT _ => outcome (swap o split_last)
end
fun select_class ctxt =
if Config.get ctxt z3_extensions then Z3_New_Interface.smtlib2_z3C
else SMTLIB2_Interface.smtlib2C
in
val z3: SMT2_Solver.solver_config = {
name = "z3_new",
class = select_class,
avail = make_avail "Z3_NEW",
command = z3_make_command "Z3_NEW",
options = z3_options,
default_max_relevant = 350 (* FUDGE *),
supports_filter = true,
outcome = z3_on_first_or_last_line,
cex_parser = NONE,
replay = SOME Z3_New_Proof_Replay.replay }
end
(* overall setup *)
val _ = Theory.setup (
SMT2_Solver.add_solver cvc3 #>
SMT2_Solver.add_solver yices #>
SMT2_Solver.add_solver z3)
end