Operators = object
  opNot*, opContains*, opLe*, opLt*, opAnd*, opOr*, opIsNil*, opEq*: PSym
  opAdd*, opSub*, opMul*, opDiv*, opLen*: PSym

TModel = object
  s*: seq[PNode]
  o*: Operators
  beSmart*: bool

proc interestingCaseExpr(m: PNode): bool {...}{.raises: [], tags: [].}

proc initOperators(g: ModuleGraph): Operators {...}{.raises: [], tags: [].}

proc buildCall(op: PSym; a: PNode): PNode {...}{.raises: [], tags: [].}

proc buildCall(op: PSym; a, b: PNode): PNode {...}{.raises: [], tags: [].}

proc lowBound(conf: ConfigRef; x: PNode): PNode {...}{.
    raises: [Exception, ValueError, IOError, ERecoverableError],
    tags: [RootEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc highBound(conf: ConfigRef; x: PNode; o: Operators): PNode {...}{.
    raises: [Exception, ValueError, IOError, ERecoverableError],
    tags: [RootEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc buildLe(o: Operators; a, b: PNode): PNode {...}{.raises: [], tags: [].}

proc canon(n: PNode; o: Operators): PNode {...}{.raises: [], tags: [].}

proc buildAdd(a: PNode; b: BiggestInt; o: Operators): PNode {...}{.raises: [],
    tags: [].}

proc addFact(m: var TModel; nn: PNode) {...}{.raises: [ERecoverableError], tags: [].}

proc addFactNeg(m: var TModel; n: PNode) {...}{.raises: [ERecoverableError], tags: [].}

proc sameTree(a, b: PNode): bool {...}{.raises: [], tags: [].}

proc invalidateFacts(s: var seq[PNode]; n: PNode) {...}{.raises: [], tags: [].}

proc invalidateFacts(m: var TModel; n: PNode) {...}{.raises: [], tags: [].}

proc doesImply(facts: TModel; prop: PNode): TImplication {...}{.
    raises: [ERecoverableError, Exception, ValueError, IOError],
    tags: [RootEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc impliesNotNil(m: TModel; arg: PNode): TImplication {...}{.
    raises: [ERecoverableError, Exception, ValueError, IOError],
    tags: [RootEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc simpleSlice(a, b: PNode): BiggestInt {...}{.raises: [], tags: [].}

proc proveLe(m: TModel; a, b: PNode): TImplication {...}{.
    raises: [ERecoverableError, Exception, ValueError, IOError],
    tags: [RootEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc addFactLe(m: var TModel; a, b: PNode) {...}{.raises: [], tags: [].}

proc addFactLt(m: var TModel; a, b: PNode) {...}{.raises: [], tags: [].}

proc addDiscriminantFact(m: var TModel; n: PNode) {...}{.raises: [], tags: [].}

proc addAsgnFact(m: var TModel; key, value: PNode) {...}{.raises: [], tags: [].}

proc sameSubexprs(m: TModel; a, b: PNode): bool {...}{.
    raises: [ERecoverableError, Exception, ValueError, IOError],
    tags: [RootEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}

proc addCaseBranchFacts(m: var TModel; n: PNode; i: int) {...}{.
    raises: [ERecoverableError], tags: [].}

proc checkFieldAccess(m: TModel; n: PNode; conf: ConfigRef) {...}{.
    raises: [ERecoverableError, Exception, ValueError, IOError],
    tags: [RootEffect, WriteIOEffect, ReadIOEffect, ReadEnvEffect].}