Examples of kodkod.engine.Solution.outcome()

kodkod.engine.Solution.outcome()
Returns the outcome of the attempt to find a model for this.formula. If the outcome is SATISFIABLE or TRIVIALLY_SATISFIABLE, a satisfying instance can be obtained by calling {@link #instance()}. If the formula is UNSATISFIABLE, a proof of unsatisfiability can be obtained by calling {@link #proof()} provided thattranslation logging was enabled and the unsatisfiability was determined using a core extracting {@link kodkod.engine.satlab.SATSolver sat solver}. Lastly, if the returned Outcome is or TRIVIALLY_UNSATISFIABLE, a proof of unsatisfiability can be obtained by calling {@link #proof()} provided thattranslation logging was enabled. @return an Outcome instance designating the satisfiability of this.formula with respect to this.bounds

        // If unsatisfiable, then retreive the unsat core if desired
        if (inst==null && solver.options().solver()==SATFactory.MiniSatProver) {
           try {
              lCore = new LinkedHashSet<Node>();
              Proof p = sol.proof();
              if (sol.outcome()==UNSATISFIABLE) {
                 // only perform the minimization if it was UNSATISFIABLE, rather than TRIVIALLY_UNSATISFIABLE
                 int i = p.highLevelCore().size();
                 rep.minimizing(cmd, i);
                 if (opt.coreMinimization==0) try { p.minimize(new RCEStrategy(p.log())); } catch(Throwable ex) {}
                 if (opt.coreMinimization==1) try { p.minimize(new HybridStrategy(p.log())); } catch(Throwable ex) {}

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              solver.options().setSolver(SATFactory.DefaultSAT4J);
              sol = solver.solve(f,b);
          } finally {
              solver.options().setSolver(sat);
          }
          if (sol==null || (sol.outcome()!=SATISFIABLE && sol.outcome()!=TRIVIALLY_SATISFIABLE)) return null;
          if (rep!=null) rep.debug("Comment: "+t[0]+"\n");
          return sol;
       } catch(Throwable ex) {
          return null;
       }

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              solver.options().setSolver(SATFactory.DefaultSAT4J);
              sol = solver.solve(f,b);
          } finally {
              solver.options().setSolver(sat);
          }
          if (sol==null || (sol.outcome()!=SATISFIABLE && sol.outcome()!=TRIVIALLY_SATISFIABLE)) return null;
          if (rep!=null) rep.debug("Comment: "+t[0]+"\n");
          return sol;
       } catch(Throwable ex) {
          return null;
       }

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