moved sort of next candidates to the top of the method to avoid issues

with parallel lists

bundles/fr.irisa.cairn.gecos.typeexploration/src/fr/irisa/cairn/gecos/typeexploration/dse/TabuExploration.java

@@ -221,6 +221,14 @@ public class TabuExploration extends AbstractExplorationAlgorithm {
 			return null;
 		}
 		
+		Collections.sort(nextSolutionCandidates, new Comparator<WordLengthsExplorer>() {
+			@Override
+			public int compare(WordLengthsExplorer o1, WordLengthsExplorer o2) {
+				return o1.getLastModifiedSymbol().getName().compareTo(o2.getLastModifiedSymbol().getName());
+			}
+			
+		});
+		
 		List<WordLengthsExplorer> listSolution = nextSolutionCandidates;
 		
 		for (WordLengthsExplorer temp : listSolution) {
@@ -243,6 +251,7 @@ public class TabuExploration extends AbstractExplorationAlgorithm {
 				}
 			}
 		}
+		
 		List<Integer> lastModifiedWLs = nextSolutionCandidates.stream()
 				.map(e -> e.getCurrentW(e.lastModifiedSymbol))
 				.collect(toList());
@@ -304,14 +313,6 @@ public class TabuExploration extends AbstractExplorationAlgorithm {
 			nextSolutionCandidates.get(i).currentSolution.setNote("selected", "F");
 		}
 		
-		Collections.sort(nextSolutionCandidates, new Comparator<WordLengthsExplorer>() {
-			@Override
-			public int compare(WordLengthsExplorer o1, WordLengthsExplorer o2) {
-				return o1.getLastModifiedSymbol().getName().compareTo(o2.getLastModifiedSymbol().getName());
-			}
-			
-		});
-		
 		final WordLengthsExplorer nextBest;
 		if(directionUp) {
 			nextBest = criteria.stream()