Documentation can be built with: ocaml setup.ml -doc

This also fixes two documentation comments that had the wrong syntax.

- Use more readable colors and proper spacing
- Differentiate between cores and states by shape
- Add a legend
- Teach debugger to optionally write graph to file instead of stdout

This is easier to type with a standard compose key as opposed as the
arguably more correct "Greek Small Letter Mu".

Otherwise, the debugger would report the reasoner result to be "Sat"
when it should really be "Unsat".

This drops the rule implementation for GML and PML, because they were
relying on GMLMIP which complicated the build process and didn't work
completely. See Issue 19.

GML and PML are still implemented as functors but currently disabled.
To re-instantiate them, an OCaml implementation is needed.

This fixes the warning "the label idx is defined in both types state
and core." by renaming the label to idxS and idxC respectively.

Hans-Peter Deifel authored 8 years ago and Hans-Peter Deifel committed 8 years ago

The CAMLparam0() macro must be invoked at the beginning of a function
that has local variables.

We want to still have the solver for naive unsat propagation

The satsolver is reatined and only updated with new clauses for every
state that is generated out of a core. Once the core becomes Open (as
opposed to expandable), the solver is no longer needed.

This patch makes the solver a `Solver option` and gets it deallocated
once no longer needed and resets the hashtable (makes it empty and zero
size) to save memory. This saves about 60% memory usage on some extreme
cases (e.g. exp_unsat from the CTL Benchmark set)

Instead of some calculation based of finishing on normal Cores really
count proper Open States