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Conflicts:
	examples/verifythis_2015_relaxed_prefix/why3session.xml
	examples/verifythis_2015_relaxed_prefix/why3shapes.gz

in comments for the moment, until I find time to prove it

this is of course unsafe, yet useful if you have proved absence of
overflows independently or if you are happy with a partial correctness
proof (that is, if there is no overflow then the postcondition holds)

this is work in progress; nothing plugged in yet

Conflicts:
	src/ide/gmain.ml

Conflicts:
	drivers/cvc4_bare.drv
	share/provers-detection-data.conf
	src/driver/driver_parser.mly
	src/printer/smtv2.ml

p labeled with label "model_projected" for that it exists a projection
function f creates declaration of new constant c and axiom stating that
c = f p

Projection functions are functions tagged with meta "model_projection".
Function f is projection function for abstract function and predicate p
if f is tagged with meta "model_projection" and has a single argument
of the same type as is the type of p.

This transformation is needed in situations when we want to display not
value of a variable, but value of a projection function applied to a variable.

Note that since Why3 supports namespaces (different projection functions
can have the same name) and input languages of solvers typically not,
Why3 renames projection functions to avoid name clashes.
This is why it is not possible to just store the name of the projection
function in a label and than query the solver directly for the value of
the projection.
Also, it means that this transformation should thus be executed before
this renaming.