Fix inst with sort depending fn

Author: Drodt

key.core/src/main/java/de/uka/ilkd/key/proof/io/IntermediateProofReplayer.java

@@ -924,8 +924,8 @@ public static TacletApp constructInsts(@NonNull TacletApp app, Goal currGoal,
             }
 
             String value = s.substring(eq + 1);
-            int colon = value.indexOf(':');
-            if (colon != -1) {
+            int colon = value.lastIndexOf(':');
+            if (colon != -1 && value.charAt(colon - 1) != ':') {
                 value = value.substring(0, colon);
             }
             app = parseSV2(app, sv, value, currGoal);

key.core/src/test/java/de/uka/ilkd/key/proof/proverules/ProveRulesTest.java

@@ -56,7 +56,7 @@ public class ProveRulesTest {
     public void loadTacletProof(String tacletName, Taclet taclet, @Nullable Path proofFile)
             throws Exception {
         assertNotNull(proofFile,
-            "Taclet " + tacletName + " was annoted with \\lemma but no taclet proof was found.");
+            "Taclet " + tacletName + " was annotated with \\lemma but no taclet proof was found.");
         assertNotNull(taclet, "Proof file " + proofFile
             + " claims that it contains a proof for taclet " + tacletName
             + " but corresponding taclet seems to be unavailable (maybe it is not annotated with \\lemma?).");