both in input and output.
Abstract evaluator returns a regular function invocation if the body could not be evaluated.

Corrected isHomo to take into account function bodies.

Simplified the double list benchmark which works now.

If holes are used but `leon.lang.synthesis.???` is not in scope,

"ask" and "byExample" constructs

to account for empty by example situations.
Added missing implementation for "computes"
Updated pretty printer for empty examples.
Removes dummy examples when adding new ones.

Minor changes

MInor changes

(b) Preserving if-then-elze in the VCs
(c) Optimizing elimnation and UFADT reduction

Fix/extern+doc

Avoid crash when the temporary directory `tmp` doesn't exists, instead
rely on the default, system-wide temporary directory.

Self pretty printer handles correctly functions containing choose (good for abstract candidates, but not good for pretty-printing).
Corrected isHomo in the case of function definitions.
Use functionInvocation instead of FunctionInvocation else typing argument is not inferred.

Cold fix: Added missed lambda case during DefOps.replaceClassDef. More accurate comparison between CaseClassTypes.

ADT invariants

- First-class functions in ADTs
- ADTs with invariants
- ADTs with fields that are not most general type

On the fly string conversion for Z3 solvers

Found out that replaceFunDef is incomplete (i.e. no unapply pattern replacement)