RicoSAT is a wrapper around PicoSAT. It lets you use the PicoSAT solver from Ruby!
- It's a SAT solver! Not SAT like the tests, but the Boolean satisfiability problem
Once you have those:
$ gem install ricosat
Solve the problem (A and NOT B):
A = 1 B = 2 sat = .new sat.add(A); sat.add(0) # Rules must always end with 0 sat.add(-B); sat.add(0) # Negative means "not" case sat.solve(-1) when :: sat.variables.times.each do |i| p((i + 1) => sat.deref(i + 1)) end when :: raise "idk" else end
A is true, and B is false.
Solve the problem (A and NOT A):
A = 1 sat = .new sat.enable_trace_generation # Get access to SAT proofs sat.add(A); sat.add(0) # Rules must always end with 0 sat.add(-A); sat.add(0) # Negative means "not" case sat.solve(-1) when :: raise "should not work" when :: sat.added_original_clauses.times do |i| if sat.coreclause(i) == 1 p [:clause, i, sat.corelit(1)] end end sat.write_extended_trace $stdout else end
It's not solvable!
- gem install ricosat
(The MIT License)
Copyright (c) 2017 Aaron Patterson
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