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A typechecker for automated deduction languages








  • Add a minimal reporting style accessible via the --report-style
    option. When used, the dolmen binary will use at most one line
    to output the result of processing the input file

  • Add an option to the dolmen binary to force a specific smtlib2
    logic, overriding the one given in the file. This is accessible
    via the --force-smtlib2-logic option

  • Add some documentation for setting up the lsp with neovim (PR#114)

Model verification

  • Added model verification. This currently supports all
    builtins, except for String/Regular expressions.


  • Fix long compilation time of tptp parser due to flambda (PR#111)

  • Replace some assert false by proper error messages when
    there is not the same number of function signatures as function
    definitions in a define-funs-rec command in smtlib2

  • Accept all reserved words in s-exprs in smtlib (mainly affects
    parsing of attributes)

  • Added a parser for the smtlib model specification language

  • Fix doc comments mentionning removed parameters
    (PR #107, issue #106)

  • Add an option to print syntax error identifiers (mainly to be
    used for debug)

  • Register a printer for the Uncaught_exn exception (mainly useful
    for library users)

  • Add a tag to differentiate predicates from functions in alt-ergo


  • Properly typecheck s-expressions in attributes for smtlib2
    (most notably in :patterns attributes for psmt2)

  • Cleaned up handling of definitions: instead of using
    the functors in Def, definitions are now simply declared
    using the functions exposed by the typechecker

  • Stop emitting unused warnings for type wildcards

  • Expose term constants in the Std.Expr module (PR#112)


  • Changed the state type from a record to an heterogeneous
    map. This simplifies interfaces for all Loop modules,
    and makes it much more extensible.

  • Added initialization functions for each pipe in order to
    correctly init the expecteds keys in the state

  • Allow users to better control the interactive prompt when
    parsing from stdin (PR#113)



  • Added source input snippet printing for errors and warnings

  • Fix a bug affecting warning options (e.g.
    dolmen --warn=+all triggered an uncaught exception that is
    now fixed)


  • Fix bug in SMTLIB syntax (v2.6 and poly), where the
    define-funs-rec syntax construction expected an open
    paren at the end instead of a closing paren


  • Complete the typing of alt-ergo's builtins

  • Added exhaustivity and redundant pattern matching analysis
    (redundant patterns trigger a warning, whereas inexhaustive
    pattern matching trigger a typing error)
    part of PR#89

  • Removed the typing of real and extended bitvector literals
    from the Float theory. These are not part of the FP
    specification, so it's better for Dolmen to be strict.
    Additionally, dependengin on the order of theories, they
    could shadow the proper typing of such literals and
    result in bogus warnings/errors
    PR#79 (see also Issue#43 Issue#74)

  • Fixed the handling of the reset and reset-assertions
    commands of smtlibv2.6. Previsously reset was ignored,
    and reset-assertions was treated as reset (meaning that
    any set-logic were erased). These two commands should
    now be correctly implemented in the typing loop.

  • Added a warning for multiple set-logics

  • Added a hint to suggest a missing theory when a literal
    is unbound.


  • Added proper abstractions for names and paths.
    Names are used instead of strings for parsed
    identifiers (Id.t), while Paths are used instead of
    strings for typed identifiers (
    This results in a speedup on some smtlib problems
    because indexed identifiers no longer need to be
    encoded and then split.

  • Added to Dolmen a custom implementation of Radix tries
    for a better indexation of strings. This results
    in signifcant speedup on large problem.

  • Added some convenience modules for testing and profiling
    (Timer and Stats)

  • The pipeline now delegates the task of printing backtraces
    for excpetions to the caller/finally argument of the run

  • the Dolmen_loop library now has an added dependency on
    pp_loc (used for the source input printing)

  • updated version bounds on cmdliner and pp_locs



  • The official github release now provides access to
    already built binaries for dolmen and dolmenls,
    for linux (ubuntu) and macos

  • The LSP server has been updated to depend on


  • Smtlib2 let-bindings were treated as sequential, but are
    now treated as parrallel as specified by the spec;
    i.e. the following is now correctly rejected:
    (let (x 0) (y x) (...))


  • Added support for higher order, including tptp's THF and Zf

  • Optimized some corner cases of the typechecker to avoid
    exponential blowups


  • The interface of the Expr module has changed to support

  • Additionally, there is now proper support for type aliases
    (which are expanded on demand as necessary), in Expr

  • There is now a new typechecker module exposed as Thf for
    typing higher order expressions



  • Added a functorized typechecker for all language supported by Dolmen

  • Added a LSP server for all language supported by Dolmen