diff --git a/encodings/strips/postprocess.lp b/encodings/strips/postprocess.lp
index 2aa3fac..3c24305 100644
--- a/encodings/strips/postprocess.lp
+++ b/encodings/strips/postprocess.lp
@@ -6,19 +6,17 @@ time    :- time(T).
 
 :- goal(X,V), not initialState(X,V), not time.
 
-next(T1,T2) :- time(T1), time(T2), T1 < T2, T <= T1 : time(T), T < T2.
-init(T2)    :- time(T2), #false : next(T1,T2).
-stop(T1)    :- time(T1), #false : next(T1,T2).
+last(T2) :- time, T2 = #max{T1 : time(T1)}.
 
-offset(T2,M)      :- time(T2), M = #count{A,T1 : occurs(A,T1), T1 < T2}.
-actions(T,N)      :- time(T), N = #count{A : occurs(A,T)}.
-index(T,M+1..M+N) :- offset(T,M), actions(T,N).
+offset(T2,M)    :- time(T2), M = #count{A,T1 : occurs(A,T1), T1 < T2}.
+finish(T,M+N)   :- offset(T,M), N = #count{A : occurs(A,T)}.
+index(T,M+1..N) :- offset(T,M), finish(T,N).
 
 postcondition(A,X,V) :- postcondition(A,E,X,V), occurs(A,T).
 postcondition(A,X)   :- postcondition(A,X,V).
 
 before(A1,A2,T) :- occurs(A1,T), occurs(A2,T), A1 != A2,
-                   precondition(A1,X,V1), postcondition(A2,X,V2), V1 != V2.
+                   precondition(A1,X,V), postcondition(A2,X), not postcondition(A2,X,V).
 
 order(A1,A2,T) :- occurs(A1,T), occurs(A2,T), A1 < A2, A <= A1 : occurs(A,T), A < A2.
 first(A2,T)    :- occurs(A2,T), #false : order(A1,A2,T).
@@ -29,23 +27,23 @@ undone(A,T,N) :- undone(A,T,N-1), select(A1,T,N), A != A1, index(T,N+1).
 done(A,T,N) :- select(A,T,N).
 done(A,T,N) :- done(A,T,N-1), index(T,N).
 
-:- offset(T,M), actions(T,N), occurs(A,T), not done(A,T,M+N).
+:- finish(T,N), occurs(A,T), not done(A,T,N).
 
-holds(X,V,0) :- initialState(X,V), time.
-holds(X,V,N) :- select(A,T,N), postcondition(A,X,V).
-holds(X,V,N) :- select(A,T,N), holds(X,V,N-1), not postcondition(A,X).
+hold(X,V,0) :- initialState(X,V).
+hold(X,V,N) :- select(A,T,N), postcondition(A,X,V).
+hold(X,V,N) :- select(A,T,N), hold(X,V,N-1), not postcondition(A,X).
 
-:- stop(T), offset(T,M), actions(T,N), goal(X,V), not holds(X,V,M+N).
+:- last(T), finish(T,N), goal(X,V), not hold(X,V,N).
 
-holds(X,N) :- holds(X,V,N).
+hold(X,N) :- hold(X,V,N).
 
-:- holds(X,N), #count{V : holds(X,V,N) } > 1.
+:- hold(X,N), #count{V : hold(X,V,N)} > 1.
 
-preconditions(A,T,N) :- undone(A,T,N), holds(X,V,N) : precondition(A,X,V).
+preconditions(A,T,N) :- undone(A,T,N), hold(X,V,N) : precondition(A,X,V).
 applicable(A,T,N)    :- preconditions(A,T,N), done(A1,T,N) : before(A1,A,T).
 
 inapplicable(A,T,N) :- done(A,T,N), index(T,N+1).
-inapplicable(A,T,N) :- undone(A,T,N), precondition(A,X,V1), holds(X,V2,N), V1 != V2.
+inapplicable(A,T,N) :- undone(A,T,N), precondition(A,X,V1), hold(X,V2,N), V1 != V2.
 inapplicable(A,T,N) :- undone(A1,T,N), before(A1,A,T).
 
 continue(A2,T,N) :- order(A1,A2,T), inapplicable(A1,T,N), first(A1,T).
@@ -54,8 +52,7 @@ continue(A2,T,N) :- order(A1,A2,T), inapplicable(A1,T,N), continue(A1,T,N).
 select(A,T,N+1) :- applicable(A,T,N), first(A,T).
 select(A,T,N+1) :- applicable(A,T,N), continue(A,T,N).
 
-sequence(A,N) :- select(A,T,N).
-
 % DISPLAY PART
 
-#show sequence/2.
+#show.
+#show sequence(A,N) : select(A,T,N).