{- |

Module : $Header$

Description : Interface to the TPTP theorem prover via Darwin.

Copyright : (c) Heng Jiang, Uni Bremen 2004-2007

License : similar to LGPL, see HetCATS/LICENSE.txt or LIZENZ.txt

Maintainer : jiang@informatik.uni-bremen.de

Stability : provisional

Portability : needs POSIX

Interface for the Darwin service, uses GUI.GenericATP.

See <http://spass.mpi-sb.mpg.de/> for details on SPASS, and

<http://combination.cs.uiowa.edu/Darwin/> for Darwin.

-}

module SoftFOL.ProveDarwin

( darwinProver

, darwinGUI

, darwinCMDLautomatic

, darwinCMDLautomaticBatch

, darwinConsChecker

) where

-- preliminary hacks for display of CASL models

import Logic.Prover

import SoftFOL.Sign

import SoftFOL.Translate

import SoftFOL.ProverState

import Common.AS_Annotation as AS_Anno

import qualified Common.Result as Result

import Common.ProofTree

import Data.Char (isDigit)

import Data.List (isPrefixOf)

import Data.Time (timeToTimeOfDay)

import Data.Time.Clock (UTCTime(..), secondsToDiffTime, getCurrentTime)

import qualified Control.Concurrent as Concurrent

import System.Cmd

import System.Exit

import System.IO

import System.Process

import HTk

import GUI.GenericATP

import GUI.GenericATPState

import GUI.Utils (infoDialog)

import Proofs.BatchProcessing

-- * Prover implementation

{- | The Prover implementation. First runs the batch prover (with

graphical feedback), then starts the GUI prover. -}

darwinProver :: Prover Sign Sentence SoftFOLMorphism () ProofTree

darwinProver = (mkProverTemplate "Darwin" () darwinGUI)

{ proveCMDLautomatic = Just darwinCMDLautomatic

, proveCMDLautomaticBatch = Just darwinCMDLautomaticBatch }

darwinConsChecker

:: ConsChecker Sign Sentence () SoftFOLMorphism ProofTree

darwinConsChecker = mkProverTemplate "darwin" () consCheck

{- |

Record for prover specific functions. This is used by both GUI and command

line interface.

-}

atpFun :: String -- ^ theory name

-> ATPFunctions Sign Sentence SoftFOLMorphism ProofTree SoftFOLProverState

atpFun thName = ATPFunctions

{ initialProverState = spassProverState

, atpTransSenName = transSenName

, atpInsertSentence = insertSentenceGen

, goalOutput = showTPTPProblem thName

, proverHelpText = "no help for darwin available"

, batchTimeEnv = "HETS_SPASS_BATCH_TIME_LIMIT"

, fileExtensions = FileExtensions

{ problemOutput = ".tptp"

, proverOutput = ".spass"

, theoryConfiguration = ".spcf" }

, runProver = runDarwin

, createProverOptions = extraOpts }

-- ** GUI

{- |

Invokes the generic prover GUI. SPASS specific functions are omitted by

data type ATPFunctions.

-}

darwinGUI :: String -- ^ theory name

-> Theory Sign Sentence ProofTree

-- ^ theory consisting of a SoftFOL.Sign.Sign

-- and a list of Named SoftFOL.Sign.Sentence

-> [FreeDefMorphism SPTerm SoftFOLMorphism] -- ^ freeness constraints

-> IO([Proof_status ProofTree]) -- ^ proof status for each goal

darwinGUI thName th freedefs =

genericATPgui (atpFun thName) True (prover_name darwinProver) thName th

freedefs emptyProofTree

-- ** command line functions

{- |

Implementation of 'Logic.Prover.proveCMDLautomatic' which provides an

automatic command line interface for a single goal.

Darwin specific functions are omitted by data type ATPFunctions.

-}

darwinCMDLautomatic ::

String -- ^ theory name

-> Tactic_script -- ^ default tactic script

-> Theory Sign Sentence ProofTree

-- ^ theory consisting of a signature and a list of Named sentence

-> [FreeDefMorphism SPTerm SoftFOLMorphism] -- ^ freeness constraints

-> IO (Result.Result ([Proof_status ProofTree]))

-- ^ Proof status for goals and lemmas

darwinCMDLautomatic thName defTS th freedefs =

genericCMDLautomatic (atpFun thName) (prover_name darwinProver) thName

(parseTactic_script batchTimeLimit [] defTS) th freedefs emptyProofTree

{- |

Implementation of 'Logic.Prover.proveCMDLautomaticBatch' which provides an

automatic command line interface to the Darwin prover via MathServe.

Darwin specific functions are omitted by data type ATPFunctions.

-}

darwinCMDLautomaticBatch ::

Bool -- ^ True means include proved theorems

-> Bool -- ^ True means save problem file

-> Concurrent.MVar (Result.Result [Proof_status ProofTree])

-- ^ used to store the result of the batch run

-> String -- ^ theory name

-> Tactic_script -- ^ default tactic script

-> Theory Sign Sentence ProofTree -- ^ theory consisting of a

-- 'SoftFOL.Sign.Sign' and a list of Named 'SoftFOL.Sign.Sentence'

-> [FreeDefMorphism SPTerm SoftFOLMorphism] -- ^ freeness constraints

-> IO (Concurrent.ThreadId,Concurrent.MVar ())

-- ^ fst: identifier of the batch thread for killing it

-- snd: MVar to wait for the end of the thread

darwinCMDLautomaticBatch inclProvedThs saveProblem_batch resultMVar

thName defTS th freedefs =

genericCMDLautomaticBatch (atpFun thName) inclProvedThs saveProblem_batch

resultMVar (prover_name darwinProver) thName

(parseTactic_script batchTimeLimit [] defTS) th freedefs emptyProofTree

-- * Main prover functions

{- |

Runs the Darwin service.

-}

consCheck :: String

-> TheoryMorphism Sign Sentence SoftFOLMorphism ProofTree

-> [FreeDefMorphism SPTerm SoftFOLMorphism] -- ^ freeness constraints

-> IO([Proof_status ProofTree])

consCheck thName tm freedefs = case t_target tm of

Theory sig nSens -> let

saveTPTP = False

timeLimitI = 20

tac = Tactic_script $ show $ ATPTactic_script

{ts_timeLimit = timeLimitI,

ts_extraOpts = [extraOptions]

}

proverStateI = spassProverState sig (toNamedList nSens) freedefs

problem = showTPTPProblemM thName proverStateI []

simpleOptions = ""

extraOptions = "-pc true -pmtptp true -fd true -to "

++ show timeLimitI

saveFileName = reverse $ fst $ span (/= '/') $ reverse thName

runDarwinRealM :: IO([Proof_status ProofTree])

runDarwinRealM = do

probl <- problem

hasProgramm <- system ("which darwin > /dev/null 2> /dev/null")

case hasProgramm of

ExitFailure _ -> do

infoDialog "Darwin prover" "Darwin not found"

return [Proof_status

{ goalName = thName

, goalStatus = openGoalStatus

, usedAxioms = getAxioms

, proverName = prover_name darwinProver

, proofTree = ProofTree "Darwin not found"

, usedTime = timeToTimeOfDay $ secondsToDiffTime 0

, tacticScript = tac }]

ExitSuccess -> do

when saveTPTP $ writeFile (saveFileName ++ ".tptp") probl

t <- getCurrentTime

let timeTmpFile = "/tmp/" ++ saveFileName ++ show (utctDay t)

++ "-" ++ show (utctDayTime t) ++ ".tptp"

writeFile timeTmpFile probl

let command = "darwin " ++ extraOptions ++ " " ++ timeTmpFile

(_, outh, errh, proch) <- runInteractiveCommand command

(exCode, output, tUsed) <- parseDarwinOut outh errh proch

let outState = proof_statM exCode simpleOptions output tUsed

return [outState]

proof_statM :: ExitCode -> String -> [String] -> Int

-> Proof_status ProofTree

proof_statM exitCode _ out tUsed = let

outState = Proof_status

{ goalName = thName

, goalStatus = Proved (Just True)

, usedAxioms = getAxioms

, proverName = prover_name darwinProver

, proofTree = ProofTree (unlines out)

, usedTime = timeToTimeOfDay $ secondsToDiffTime

$ toInteger tUsed

, tacticScript = tac }

in case exitCode of

ExitSuccess -> outState

ExitFailure i -> outState

{ goalStatus = if elem i [2, 105, 112]

then Open $ Reason [show exitCode]

else Disproved }

getAxioms = let

fl = formulaLists $ initialLogicalPart proverStateI

fs = concatMap formulae $ filter isAxiomFormula fl

in map AS_Anno.senAttr fs

in runDarwinRealM

runDarwin :: SoftFOLProverState

-- ^ logical part containing the input Sign and axioms and possibly

-- goals that have been proved earlier as additional axioms

-> GenericConfig ProofTree -- ^ configuration to use

-> Bool -- ^ True means save TPTP file

-> String -- ^ name of the theory in the DevGraph

-> AS_Anno.Named SPTerm -- ^ goal to prove

-> IO (ATPRetval, GenericConfig ProofTree)

-- ^ (retval, configuration with proof status and complete output)

runDarwin sps cfg saveTPTP thName nGoal = do

-- putStrLn ("running Darwin...")

runDarwinReal

where

simpleOptions = extraOpts cfg

extraOptions = maybe "-pc false"

( \ tl -> "-pc false" ++ " -to " ++ show tl) $ timeLimit cfg

saveFileName = thName++'_':AS_Anno.senAttr nGoal

tmpFileName = (reverse $ fst $ span (/='/') $ reverse thName) ++

'_':AS_Anno.senAttr nGoal

-- tLimit = maybe (guiDefaultTimeLimit) id $ timeLimit cfg

runDarwinReal = do

hasProgramm <- system ("which darwin > /dev/null 2> /dev/null")

case hasProgramm of

ExitFailure _ -> return

(ATPError "Could not start Darwin. Is Darwin in your $PATH?",

emptyConfig (prover_name darwinProver)

(AS_Anno.senAttr nGoal) emptyProofTree)

ExitSuccess -> do

prob <- showTPTPProblem thName sps nGoal $

simpleOptions ++ ["Requested prover: Darwin"]

when saveTPTP

(writeFile (saveFileName ++".tptp") prob)

t <- getCurrentTime

let timeTmpFile = "/tmp/" ++ tmpFileName ++ (show $ utctDay t) ++

"-" ++ (show $ utctDayTime t) ++ ".tptp"

writeFile timeTmpFile prob

let command = "darwin " ++ extraOptions ++ " " ++ timeTmpFile

-- putStrLn command

(_, outh, errh, proch) <- runInteractiveCommand command

(exCode, output, tUsed) <- parseDarwinOut outh errh proch

let (err, retval) = proof_stat exCode simpleOptions output tUsed

return (err,

cfg{proof_status = retval,

resultOutput = output,

timeUsed = timeToTimeOfDay $

secondsToDiffTime $ toInteger tUsed})

proof_stat exitCode options out tUsed =

case exitCode of

ExitSuccess -> (ATPSuccess, proved_status options tUsed)

ExitFailure 2 -> (ATPError (unlines ("Internal error.":out)),

defaultProof_status options)

ExitFailure 112 ->

(ATPTLimitExceeded, defaultProof_status options)

ExitFailure 105 ->

(ATPBatchStopped, defaultProof_status options)

ExitFailure _ ->

(ATPSuccess, disProved_status options)

defaultProof_status opts =

(openProof_status

(AS_Anno.senAttr nGoal) (prover_name darwinProver) $

emptyProofTree)

{tacticScript = Tactic_script $ show $ ATPTactic_script

{ts_timeLimit = configTimeLimit cfg,

ts_extraOpts = opts} }

disProved_status opts = (defaultProof_status opts)

{goalStatus = Disproved}

proved_status opts ut = Proof_status

{ goalName = AS_Anno.senAttr nGoal

, goalStatus = Proved (Just True)

, usedAxioms = getAxioms -- []

, proverName = prover_name darwinProver

, proofTree = emptyProofTree

, usedTime = timeToTimeOfDay $ secondsToDiffTime $ toInteger ut

, tacticScript = Tactic_script $ show $ ATPTactic_script

{ ts_timeLimit = configTimeLimit cfg, ts_extraOpts = opts }}

getAxioms = let

fl = formulaLists $ initialLogicalPart sps

fs = concatMap formulae $ filter isAxiomFormula fl

in map AS_Anno.senAttr fs

isAxiomFormula :: SPFormulaList -> Bool

isAxiomFormula fl =

case originType fl of

SPOriginAxioms -> True

_ -> False

parseDarwinOut :: Handle -- ^ handel of stdout

-> Handle -- ^ handel of stderr

-> ProcessHandle -- ^ handel of process

-> IO (ExitCode, [String], Int)

-- ^ (exit code, complete output, used time)

parseDarwinOut outh _ proc = do

--darwin does not write to stderr here, so ignore output

--err <- hGetLine errh

--if null err then

readLineAndParse (ExitFailure 1, [], -1) False

where

readLineAndParse (exCode, output, to) stateFound = do

procState <- isProcessRun

case procState of

ExitSuccess -> do

iseof <- hIsEOF outh

if iseof then

do -- ec <- isProcessRun proc

waitForProcess proc

return (exCode, reverse output, to)

else do

line <- hGetLine outh

if "Couldn't find eprover" `isPrefixOf` line

then do

waitForProcess proc

return (ExitFailure 2, line : output, to)

else if "Try darwin -h for further information" `isPrefixOf` line

-- error by running darwin.

then do

waitForProcess proc

return (ExitFailure 2, line : output, to)

else if "SZS status" `isPrefixOf` line && not stateFound

then let state' = words line !! 2 in

readLineAndParse (checkSZSState state', line : output, to)

True

else if "CPU Time" `isPrefixOf` line -- get cup time

then let time = case takeWhile isDigit $ last (words line) of

ds@(_ : _) -> read ds

_ -> to

in readLineAndParse (exCode, line : output, time)

stateFound

else readLineAndParse (exCode, line : output, to)

stateFound

failure -> do

waitForProcess proc

return (failure, output, to)

checkSZSState szsState =

(\ i -> if i == 0 then ExitSuccess else ExitFailure i) $

case szsState of

"Unsolved" -> 101

"Open" -> 102

"Unknown" -> 103

"Assumed" -> 104

"Stopped" -> 105

"Error" -> 106

"InputError" -> 107

"OSError" -> 108

"Forced" -> 109

"User" -> 110

"ResourceOut" -> 111

"Timeout" -> 112

"MemoryOut" -> 113

"Gaveup" -> 114

"Incomplete" -> 115

"Inappropriate" -> 116

"NotTested" -> 117

"NotTestedYet" -> 118

"CounterSatisfiable" -> 119

"CounterTheorem" -> 120

"CounterEquivalent" -> 121

"WeakerCounterTheorem" -> 122

"UnsatisfiableConclusion" -> 123

"EquivalentCounterTheorem" -> 124

"Unsatisfiable" -> 125

"SatisfiableCounterConclusionContradictoryAxioms" -> 126

"UnsatisfiableConclusionContradictoryAxioms" -> 127

"NoConsequence" -> 128

"CounterSatisfiabilityPreserving" -> 129

"CounterSatisfiabilityPartialMapping" -> 130

"CounterSatisfiabilityMapping" -> 131

"CounterSatisfiabilityBijection" -> 132

_ -> 0

-- check if darwin running

isProcessRun = do

exitcode <- getProcessExitCode proc

case exitcode of

Nothing -> return ExitSuccess

Just (ExitFailure i) -> return (ExitFailure i)

Just ExitSuccess -> return ExitSuccess