X-Git-Url: http://plrg.eecs.uci.edu/git/?p=repair.git;a=blobdiff_plain;f=Repair%2FRepairCompiler%2FMCC%2FIR%2FRepairGenerator.java;h=06252cd6764a4484bc88edca126e7a5f6b8f4288;hp=79677d172194ca3c617e0c542e70133c21690686;hb=69569fb5b790d7bd6567d8bf4f0ab6664e782380;hpb=27bbf503174c94925a8bc4e52d9d6eefcabdc0dc

diff --git a/Repair/RepairCompiler/MCC/IR/RepairGenerator.java b/Repair/RepairCompiler/MCC/IR/RepairGenerator.java
index 79677d1..06252cd 100755
--- a/Repair/RepairCompiler/MCC/IR/RepairGenerator.java
+++ b/Repair/RepairCompiler/MCC/IR/RepairGenerator.java
@@ -3,6 +3,7 @@ package MCC.IR;
 import java.io.*;
 import java.util.*;
 import MCC.State;
+import MCC.Compiler;
 
 public class RepairGenerator {
     State state;
@@ -24,7 +25,7 @@ public class RepairGenerator {
     HashSet togenerate;
     static boolean DEBUG=false;
     Cost cost;
-    Sources sources;
+    ModelRuleDependence mrd;
 
     public RepairGenerator(State state, Termination t) {
         this.state = state;
@@ -34,10 +35,11 @@ public class RepairGenerator {
 	removed=t.removedset;
 	togenerate=new HashSet();
         togenerate.addAll(termination.conjunctions);
-        togenerate.removeAll(removed);
+	if (Compiler.REPAIR)
+	    togenerate.removeAll(removed);
         GraphNode.computeclosure(togenerate,removed);
 	cost=new Cost();
-	sources=new Sources(state);
+	mrd=ModelRuleDependence.doAnalysis(state);
 	Repair.repairgenerator=this;
     }
 
@@ -82,14 +84,22 @@ public class RepairGenerator {
         generate_hashtables();
 	generate_stateobject();
 	generate_call();
-	generate_worklist();
+	generate_start();
         generate_rules();
+	if (!Compiler.REPAIR||Compiler.GENERATEDEBUGPRINT) {
+	    generate_print();
+	}
         generate_checks();
         generate_teardown();
 	CodeWriter crhead = new StandardCodeWriter(this.outputhead);
 	CodeWriter craux = new StandardCodeWriter(this.outputaux);
 	crhead.outputline("};");
 	craux.outputline("}");
+
+	if (Compiler.GENERATEDEBUGHOOKS) {
+	    crhead.outputline("void debughook();");
+	    craux.outputline("void debughook() {}");
+	}
 	generatetypechecks(false);
 	generate_computesizes();
 	generatetypechecks(true);
@@ -106,11 +116,14 @@ public class RepairGenerator {
     String strepairtable="repairtable";
     String stleft="left";
     String stright="right";
+    String stnew="newvalue";
 
     private void generate_updates() {
 	int count=0;
         CodeWriter crhead = new StandardCodeWriter(outputhead);        
         CodeWriter craux = new StandardCodeWriter(outputaux);        
+	RelationDescriptor.prefix = "model->";
+	SetDescriptor.prefix = "model->";
 
 	/* Rewrite globals */
 
@@ -140,15 +153,18 @@ public class RepairGenerator {
 		    }
 		    craux.startblock();
 		    craux.outputline("int maybe=0;");
+		    if (Compiler.GENERATEINSTRUMENT)
+			craux.outputline("updatecount++;");
+
 		    final SymbolTable st = un.getRule().getSymbolTable();                
 		    CodeWriter cr = new StandardCodeWriter(outputaux) {
                         public SymbolTable getSymbolTable() { return st; }
                     };
-		    un.generate(cr, false, stleft,stright,this);
+		    un.generate(cr, false, false, stleft,stright, null,this);
 		    craux.outputline("if (maybe) printf(\"REALLY BAD\");");
 		    craux.endblock();
 		    break;
-		case MultUpdateNode.REMOVE:
+		case MultUpdateNode.REMOVE: {
 		    Rule r=un.getRule();
 		    String methodcall="void "+methodname+"("+name+"_state * "+ststate+","+name+" * "+stmodel+", RepairHash * "+strepairtable;
 		    for(int j=0;j<r.numQuantifiers();j++) {
@@ -171,15 +187,53 @@ public class RepairGenerator {
 		    craux.outputline(methodcall);
 		    craux.startblock();
 		    craux.outputline("int maybe=0;");
+		    if (Compiler.GENERATEINSTRUMENT)
+			craux.outputline("updatecount++;");
 		    final SymbolTable st2 = un.getRule().getSymbolTable();
 		    CodeWriter cr2 = new StandardCodeWriter(outputaux) {
                         public SymbolTable getSymbolTable() { return st2; }
                     };
-		    un.generate(cr2, true, null,null,this);
+		    un.generate(cr2, true, false, null,null, null,this);
 		    craux.outputline("if (maybe) printf(\"REALLY BAD\");");
 		    craux.endblock();
+		}
 		    break;
-		case MultUpdateNode.MODIFY:
+		case MultUpdateNode.MODIFY: {
+		    Rule r=un.getRule();
+		    String methodcall="void "+methodname+"("+name+"_state * "+ststate+","+name+" * "+stmodel+", RepairHash * "+strepairtable;
+		    for(int j=0;j<r.numQuantifiers();j++) {
+			Quantifier q=r.getQuantifier(j);
+			if (q instanceof SetQuantifier) {
+			    SetQuantifier sq=(SetQuantifier) q;
+			    methodcall+=","+sq.getVar().getType().getGenerateType().getSafeSymbol()+" "+sq.getVar().getSafeSymbol();
+			} else if (q instanceof RelationQuantifier) {
+			    RelationQuantifier rq=(RelationQuantifier) q;
+			    
+			    methodcall+=", "+rq.x.getType().getGenerateType().getSafeSymbol()+" "+rq.x.getSafeSymbol();
+			    methodcall+=", "+rq.y.getType().getGenerateType().getSafeSymbol()+" "+rq.y.getSafeSymbol();
+			} else if (q instanceof ForQuantifier) {
+			    ForQuantifier fq=(ForQuantifier) q;
+			    methodcall+=", int "+fq.getVar().getSafeSymbol();
+			}
+		    }
+		    methodcall+=", int "+stleft+", int "+stright+", int "+stnew;
+		    methodcall+=")";
+		    crhead.outputline(methodcall+";");
+		    craux.outputline(methodcall);
+		    craux.startblock();
+		    craux.outputline("int maybe=0;");
+		    if (Compiler.GENERATEINSTRUMENT)
+			craux.outputline("updatecount++;");
+		    final SymbolTable st2 = un.getRule().getSymbolTable();
+		    CodeWriter cr2 = new StandardCodeWriter(outputaux) {
+                        public SymbolTable getSymbolTable() { return st2; }
+                    };
+		    un.generate(cr2, false, true, stleft, stright, stnew, this);
+		    craux.outputline("if (maybe) printf(\"REALLY BAD\");");
+		    craux.endblock();
+		}
+		    break;
+
 		default:
 		    throw new Error("Nonimplement Update");
 		}
@@ -243,8 +297,13 @@ public class RepairGenerator {
 	    TypeDescriptor ttd=(TypeDescriptor)it.next();
 	    tdarray[ttd.getId()]=ttd;
 	}
-	CodeWriter cr=new StandardCodeWriter(outputaux);
+	final SymbolTable st = state.stGlobals;
+	CodeWriter cr = new StandardCodeWriter(outputaux) {
+		public SymbolTable getSymbolTable() { return st; }
+	    };
+
 	cr.outputline("void "+name+"_state::computesizes(int *sizearray,int **numele) {");
+	cr.outputline("int maybe=0;");
 	for(int i=0;i<max;i++) {
 	    TypeDescriptor td=tdarray[i];
 	    Expr size=td.getSizeExpr();
@@ -268,6 +327,7 @@ public class RepairGenerator {
 		}
 	    }
 	}
+	cr.outputline("if (maybe) printf(\"BAD ERROR\");");
 	cr.outputline("}");
     }
 
@@ -278,8 +338,12 @@ public class RepairGenerator {
 	    TypeDescriptor ttd=(TypeDescriptor)it.next();
 	    tdarray[ttd.getId()]=ttd;
 	}
-	CodeWriter cr=new StandardCodeWriter(outputaux);
+	final SymbolTable st = state.stGlobals;
+	CodeWriter cr = new StandardCodeWriter(outputaux) {
+		public SymbolTable getSymbolTable() { return st; }
+	    };
 	cr.outputline("void "+name+"_state::recomputesizes() {");
+	cr.outputline("int maybe=0;");
 	for(int i=0;i<max;i++) {
 	    TypeDescriptor td=tdarray[i];
 	    Expr size=td.getSizeExpr();
@@ -301,6 +365,7 @@ public class RepairGenerator {
 		}
 	    }
 	}
+	cr.outputline("if (maybe) printf(\"BAD ERROR\");");
 	cr.outputline("}");
     }
 
@@ -322,7 +387,25 @@ public class RepairGenerator {
 	crhead.outputline("~"+name+"();");
         craux.outputline("#include \""+headername+"\"");
         craux.outputline("#include \"size.h\"");
-
+	if (Compiler.TIME) {
+	    craux.outputline("#include <sys/time.h>");
+	}
+	if (Compiler.ALLOCATECPLUSPLUS) {
+	    for(Iterator it=state.stTypes.descriptors();it.hasNext();) {
+		TypeDescriptor td=(TypeDescriptor)it.next();
+		if (td instanceof StructureTypeDescriptor) {
+		    if (((StructureTypeDescriptor)td).size()>0) {
+			FieldDescriptor fd=((StructureTypeDescriptor)td).get(0);
+			if (fd.getSymbol().startsWith("_vptr_")) {
+			    String vtable="_ZTV";
+			    vtable+=td.getSymbol().length();
+			    vtable+=td.getSymbol();
+			    craux.outputline("extern void * "+vtable+";");
+			}
+		    }
+		}
+	    }
+	}
         craux.outputline(name+"::"+name+"() {");
         craux.outputline("// creating hashtables ");
         
@@ -399,7 +482,7 @@ public class RepairGenerator {
         craux.outputline("}");
     }
 
-    private void generate_worklist() {
+    private void generate_start() {
         CodeWriter crhead = new StandardCodeWriter(outputhead);
         CodeWriter craux = new StandardCodeWriter(outputaux);
 	oldmodel=VarDescriptor.makeNew("oldmodel");
@@ -407,9 +490,26 @@ public class RepairGenerator {
 	worklist=VarDescriptor.makeNew("worklist");
 	goodflag=VarDescriptor.makeNew("goodflag");
 	repairtable=VarDescriptor.makeNew("repairtable");
+
+	if (Compiler.GENERATEINSTRUMENT) {
+	    craux.outputline("int updatecount;");
+	    craux.outputline("int rebuildcount;");
+	    craux.outputline("int abstractcount;");
+	}
+	
 	crhead.outputline("void doanalysis();");
 	craux.outputline("void "+name +"_state::doanalysis()");
   	craux.startblock();
+	if (Compiler.TIME) {
+	    craux.outputline("struct timeval _begin_time,_end_time;");
+	    craux.outputline("gettimeofday(&_begin_time,NULL);");
+	}
+
+	if (Compiler.GENERATEINSTRUMENT) {
+	    craux.outputline("updatecount=0;");
+	    craux.outputline("rebuildcount=0;");
+	    craux.outputline("abstractcount=0;");
+	}
 	craux.outputline("int highmark;");
 	craux.outputline("initializestack(&highmark);");
 	craux.outputline("typeobject *typeobject1=gettypeobject();");
@@ -420,165 +520,252 @@ public class RepairGenerator {
 	craux.outputline("RepairHash * "+repairtable.getSafeSymbol()+"=0;");
 	craux.outputline("while (1)");
 	craux.startblock();
-	craux.outputline("int "+goodflag.getSafeSymbol()+"=1;");
 	craux.outputline(name+ " * "+newmodel.getSafeSymbol()+"=new "+name+"();");
+	craux.outputline(worklist.getSafeSymbol()+"->reset();");
+	if (Compiler.GENERATEINSTRUMENT)
+	    craux.outputline("rebuildcount++;");
     }
     
     private void generate_teardown() {
 	CodeWriter cr = new StandardCodeWriter(outputaux);        
 	cr.endblock();
-    }
-
-    private void generate_rules() {
-	/* first we must sort the rules */
-        Iterator allrules = state.vRules.iterator();
-        Vector emptyrules = new Vector(); // rules with no quantifiers
-        Vector worklistrules = new Vector(); // the rest of the rules
-	RelationDescriptor.prefix = newmodel.getSafeSymbol()+"->";
-	SetDescriptor.prefix = newmodel.getSafeSymbol()+"->";
-
-        while (allrules.hasNext()) {
-            Rule rule = (Rule) allrules.next();
-            ListIterator quantifiers = rule.quantifiers();
-            boolean noquantifiers = true;
-            while (quantifiers.hasNext()) {
-                Quantifier quantifier = (Quantifier) quantifiers.next();
-                if (quantifier instanceof ForQuantifier) {
-                    // ok, because integers exist already!
-                } else {
-                    // real quantifier
-                    noquantifiers = false;
-                    break;
-                }
-            }
-            if (noquantifiers) {
-                emptyrules.add(rule);
-            } else {
-                worklistrules.add(rule);
-            }
-        }
-       
-        Iterator iterator_er = emptyrules.iterator();
-        while (iterator_er.hasNext()) {
-            Rule rule = (Rule) iterator_er.next();
-            {
-                final SymbolTable st = rule.getSymbolTable();                
-                CodeWriter cr = new StandardCodeWriter(outputaux) {
-                        public SymbolTable getSymbolTable() { return st; }
-                    };
-		cr.outputline("// build " +escape(rule.toString()));
-                cr.startblock();
-		cr.outputline("int maybe=0;");
-                ListIterator quantifiers = rule.quantifiers();
-                while (quantifiers.hasNext()) {
-                    Quantifier quantifier = (Quantifier) quantifiers.next();
-                    quantifier.generate_open(cr);
-                }
+	if (Compiler.TIME) {
+	    cr.outputline("gettimeofday(&_end_time,NULL);");
+	    cr.outputline("printf(\"time=%ld uS\\n\",(_end_time.tv_sec-_begin_time.tv_sec)*1000000+_end_time.tv_usec-_begin_time.tv_usec);");
+	}
 
-                /* pretty print! */
-                cr.output("//");
-                rule.getGuardExpr().prettyPrint(cr);
-                cr.outputline("");
+	if (Compiler.GENERATEINSTRUMENT) {
+	    cr.outputline("printf(\"updatecount=%d\\n\",updatecount);");
+	    cr.outputline("printf(\"rebuildcount=%d\\n\",rebuildcount);");
+	    cr.outputline("printf(\"abstractcount=%d\\n\",abstractcount);");
+	}
 
-                /* now we have to generate the guard test */
-		VarDescriptor guardval = VarDescriptor.makeNew();
-                rule.getGuardExpr().generate(cr, guardval);
-		cr.outputline("if (" + guardval.getSafeSymbol() + ")");
-                cr.startblock();
+    }
 
-                /* now we have to generate the inclusion code */
-		currentrule=rule;
-                rule.getInclusion().generate(cr);
-                cr.endblock();
-                while (quantifiers.hasPrevious()) {
-                    Quantifier quantifier = (Quantifier) quantifiers.previous();
-                    cr.endblock();
-                }
-                cr.endblock();
-                cr.outputline("");
-                cr.outputline("");
-            }
-        }
+    private void generate_print() {
+	
+	final SymbolTable st = new SymbolTable();
 
-        CodeWriter cr2 = new StandardCodeWriter(outputaux);        
+	CodeWriter cr = new StandardCodeWriter(outputaux) {
+		public SymbolTable getSymbolTable() { return st; }
+	    };
 
-        cr2.outputline("while ("+goodflag.getSafeSymbol()+"&&"+worklist.getSafeSymbol()+"->hasMoreElements())");
-        cr2.startblock();
-	VarDescriptor idvar=VarDescriptor.makeNew("id");
-        cr2.outputline("int "+idvar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->getid();");
-        
-        String elseladder = "if";
+	cr.outputline("// printing sets!");
+	cr.outputline("printf(\"\\n\\nPRINTING SETS AND RELATIONS\\n\");");
 
-        Iterator iterator_rules = worklistrules.iterator();
-        while (iterator_rules.hasNext()) {
+        Iterator setiterator = state.stSets.descriptors();
+	while (setiterator.hasNext()) {
+	    SetDescriptor sd = (SetDescriptor) setiterator.next();
+	    if (sd.getSymbol().equals("int") || sd.getSymbol().equals("token")) {
+		continue;
+	    }
 
-            Rule rule = (Rule) iterator_rules.next();
-            int dispatchid = rule.getNum();
+	    String setname = sd.getSafeSymbol();
 
-            {
-                final SymbolTable st = rule.getSymbolTable();
-                CodeWriter cr = new StandardCodeWriter(outputaux) {
-                        public SymbolTable getSymbolTable() { return st; }
-                    };
+	    cr.startblock();
+	    cr.outputline("// printing set " + setname);
+	    cr.outputline("printf(\"\\nPrinting set " + sd.getSymbol() + " - %d elements \\n\", " + setname + "_hash->count());");
+	    cr.outputline("SimpleIterator __setiterator;");
+	    cr.outputline("" + setname + "_hash->iterator(__setiterator);");
+	    cr.outputline("while (__setiterator.hasNext())");
+	    cr.startblock();
+	    cr.outputline("int __setval = (int) __setiterator.next();");
 
-                cr.indent();
-                cr.outputline(elseladder + " ("+idvar.getSafeSymbol()+" == " + dispatchid + ")");
-                cr.startblock();
-		cr.outputline("int maybe=0;");
-		VarDescriptor typevar=VarDescriptor.makeNew("type");
-		VarDescriptor leftvar=VarDescriptor.makeNew("left");
-		VarDescriptor rightvar=VarDescriptor.makeNew("right");
-		cr.outputline("int "+typevar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->gettype();");
-		cr.outputline("int "+leftvar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->getlvalue();");
-		cr.outputline("int "+rightvar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->getrvalue();");
-		cr.outputline("// build " +escape(rule.toString()));
+	    TypeDescriptor td = sd.getType();
+	    if (td instanceof StructureTypeDescriptor) {
+		StructureTypeDescriptor std = (StructureTypeDescriptor) td;
+		VarDescriptor vd = new VarDescriptor ("__setval", "__setval", td, false);
+		std.generate_printout(cr, vd);
+	    } else { // Missing type descriptor or reserved type, just print int
+		cr.outputline("printf(\"<%d> \", __setval);"); 	    		
+	    }
 
 
-		for (int j=0;j<rule.numQuantifiers();j++) {
-		    Quantifier quantifier = rule.getQuantifier(j);
-		    quantifier.generate_open(cr, typevar.getSafeSymbol(),j,leftvar.getSafeSymbol(),rightvar.getSafeSymbol());
-		}
-
-                /* pretty print! */
-                cr.output("//");
+	    cr.endblock();
+	    cr.endblock();
+	}
 
-                rule.getGuardExpr().prettyPrint(cr);
-                cr.outputline("");
+	cr.outputline("printf(\"\\n\\n------------------- END PRINTING\\n\");");
+    }
 
-                /* now we have to generate the guard test */
-        
-                VarDescriptor guardval = VarDescriptor.makeNew();
-                rule.getGuardExpr().generate(cr, guardval);
-                
-                cr.outputline("if (" + guardval.getSafeSymbol() + ")");
-                cr.startblock();
+    Set ruleset=null;
+    private void generate_rules() {
+	/* first we must sort the rules */
+	RelationDescriptor.prefix = newmodel.getSafeSymbol()+"->";
+	SetDescriptor.prefix = newmodel.getSafeSymbol()+"->";
+	System.out.println("SCC="+(mrd.numSCC()-1));
+	for(int sccindex=0;sccindex<mrd.numSCC();sccindex++) {
+	    ruleset=mrd.getSCC(sccindex);
+	    boolean needworklist=mrd.hasCycle(sccindex);
+	    
+	    if (!needworklist) {
+		Iterator iterator_rs = ruleset.iterator();
+		while (iterator_rs.hasNext()) {
+		    Rule rule = (Rule) iterator_rs.next();
+		    if (rule.getnogenerate())
+			continue;
+		    {
+			final SymbolTable st = rule.getSymbolTable();
+			CodeWriter cr = new StandardCodeWriter(outputaux) {
+				public SymbolTable getSymbolTable() { return st; }
+			    };
+			InvariantValue ivalue=new InvariantValue();
+			cr.setInvariantValue(ivalue);
+
+			cr.outputline("// build " +escape(rule.toString()));
+			cr.startblock();
+			cr.outputline("int maybe=0;");
+
+			Expr ruleexpr=rule.getGuardExpr();
+			HashSet invariantvars=new HashSet();
+			Set invariants=ruleexpr.findInvariants(invariantvars);
+
+			if ((ruleexpr instanceof BooleanLiteralExpr)&&
+			    ((BooleanLiteralExpr)ruleexpr).getValue()) {
+			    if (rule.getInclusion() instanceof SetInclusion) {
+				invariants.addAll(((SetInclusion)rule.getInclusion()).getExpr().findInvariants(invariantvars));
+			    } else if (rule.getInclusion() instanceof RelationInclusion) {
+				invariants.addAll(((RelationInclusion)rule.getInclusion()).getLeftExpr().findInvariants(invariantvars));
+				invariants.addAll(((RelationInclusion)rule.getInclusion()).getRightExpr().findInvariants(invariantvars));
+			    }
+			}
+			ListIterator quantifiers = rule.quantifiers();			
+			while (quantifiers.hasNext()) {
+			    Quantifier quantifier = (Quantifier) quantifiers.next();
+			    if (quantifier instanceof ForQuantifier) {
+				ForQuantifier fq=(ForQuantifier)quantifier;
+				invariants.addAll(fq.lower.findInvariants(invariantvars));
+				invariants.addAll(fq.upper.findInvariants(invariantvars));
+			    }
+			}
 
-                /* now we have to generate the inclusion code */
-		currentrule=rule;
-                rule.getInclusion().generate(cr);
-                cr.endblock();
+			for(Iterator invit=invariants.iterator();invit.hasNext();) {
+			    Expr invexpr=(Expr)invit.next();
+			    VarDescriptor tmpvd=VarDescriptor.makeNew("tmpvar");
+			    VarDescriptor maybevd=VarDescriptor.makeNew("maybevar");
+			    invexpr.generate(cr,tmpvd);
+			    cr.outputline("int "+maybevd.getSafeSymbol()+"=maybe;");
+			    cr.outputline("maybe=0;");
+			    ivalue.assignPair(invexpr,tmpvd,maybevd);
+			}
 
-		for (int j=0;j<rule.numQuantifiers();j++) {
-		    cr.endblock();
+			quantifiers = rule.quantifiers();
+			while (quantifiers.hasNext()) {
+			    Quantifier quantifier = (Quantifier) quantifiers.next();
+			    quantifier.generate_open(cr);
+			}
+			
+			/* pretty print! */
+			cr.output("//");
+			rule.getGuardExpr().prettyPrint(cr);
+			cr.outputline("");
+			
+			/* now we have to generate the guard test */
+			VarDescriptor guardval = VarDescriptor.makeNew();
+			rule.getGuardExpr().generate(cr, guardval);
+			cr.outputline("if (" + guardval.getSafeSymbol() + ")");
+			cr.startblock();
+			
+			/* now we have to generate the inclusion code */
+			currentrule=rule;
+			rule.getInclusion().generate(cr);
+			cr.endblock();
+			while (quantifiers.hasPrevious()) {
+			    Quantifier quantifier = (Quantifier) quantifiers.previous();
+			    cr.endblock();
+			}
+			cr.endblock();
+			cr.outputline("");
+			cr.outputline("");
+		    }
+		}
+	    } else {
+		CodeWriter cr2 = new StandardCodeWriter(outputaux);
+		
+		for(Iterator initialworklist=ruleset.iterator();initialworklist.hasNext();) {
+		    /** Construct initial worklist set */
+		    Rule rule=(Rule)initialworklist.next();
+		    cr2.outputline(worklist.getSafeSymbol()+"->add("+rule.getNum()+",-1,0,0);");
 		}
 
-                // close startblocks generated by DotExpr memory checks
-                //DotExpr.generate_memory_endblocks(cr);
-
-                cr.endblock(); // end else-if WORKLIST ladder
-
-                elseladder = "else if";
-            }
-        }
-
-        cr2.outputline("else");
-        cr2.startblock();
-        cr2.outputline("printf(\"VERY BAD !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\\n\\n\");");
-        cr2.outputline("exit(1);");
-        cr2.endblock();
-        // end block created for worklist
-	cr2.outputline(worklist.getSafeSymbol()+"->pop();");
-        cr2.endblock();
+		cr2.outputline("while ("+worklist.getSafeSymbol()+"->hasMoreElements())");
+		cr2.startblock();
+		VarDescriptor idvar=VarDescriptor.makeNew("id");
+		cr2.outputline("int "+idvar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->getid();");
+		
+		String elseladder = "if";
+		
+		Iterator iterator_rules = ruleset.iterator();
+		while (iterator_rules.hasNext()) {
+		    
+		    Rule rule = (Rule) iterator_rules.next();
+		    int dispatchid = rule.getNum();
+		    
+		    {
+			final SymbolTable st = rule.getSymbolTable();
+			CodeWriter cr = new StandardCodeWriter(outputaux) {
+				public SymbolTable getSymbolTable() { return st; }
+			    };
+			
+			cr.indent();
+			cr.outputline(elseladder + " ("+idvar.getSafeSymbol()+" == " + dispatchid + ")");
+			cr.startblock();
+			cr.outputline("int maybe=0;");
+			VarDescriptor typevar=VarDescriptor.makeNew("type");
+			VarDescriptor leftvar=VarDescriptor.makeNew("left");
+			VarDescriptor rightvar=VarDescriptor.makeNew("right");
+			cr.outputline("int "+typevar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->gettype();");
+			cr.outputline("int "+leftvar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->getlvalue();");
+			cr.outputline("int "+rightvar.getSafeSymbol()+"="+worklist.getSafeSymbol()+"->getrvalue();");
+			cr.outputline("// build " +escape(rule.toString()));
+			
+			
+			for (int j=0;j<rule.numQuantifiers();j++) {
+			    Quantifier quantifier = rule.getQuantifier(j);
+			    quantifier.generate_open(cr, typevar.getSafeSymbol(),j,leftvar.getSafeSymbol(),rightvar.getSafeSymbol());
+			}
+			
+			/* pretty print! */
+			cr.output("//");
+			
+			rule.getGuardExpr().prettyPrint(cr);
+			cr.outputline("");
+			
+			/* now we have to generate the guard test */
+			
+			VarDescriptor guardval = VarDescriptor.makeNew();
+			rule.getGuardExpr().generate(cr, guardval);
+			
+			cr.outputline("if (" + guardval.getSafeSymbol() + ")");
+			cr.startblock();
+			
+			/* now we have to generate the inclusion code */
+			currentrule=rule;
+			rule.getInclusion().generate(cr);
+			cr.endblock();
+			
+			for (int j=0;j<rule.numQuantifiers();j++) {
+			    cr.endblock();
+			}
+			
+			// close startblocks generated by DotExpr memory checks
+			//DotExpr.generate_memory_endblocks(cr);
+			
+			cr.endblock(); // end else-if WORKLIST ladder
+			
+			elseladder = "else if";
+		    }
+		}
+		cr2.outputline("else");
+		cr2.startblock();
+		cr2.outputline("printf(\"VERY BAD !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\\n\\n\");");
+		cr2.outputline("exit(1);");
+		cr2.endblock();
+		// end block created for worklist
+		cr2.outputline(worklist.getSafeSymbol()+"->pop();");
+		cr2.endblock();
+	    }
+	}
     }
 
     public static String escape(String s) {
@@ -594,31 +781,33 @@ public class RepairGenerator {
     }
 
     private void generate_checks() {
-
         /* do constraint checks */
-        Vector constraints = state.vConstraints;
-
-        for (int i = 0; i < constraints.size(); i++) {
-
-            Constraint constraint = (Constraint) constraints.elementAt(i); 
-
+	Iterator i;
+	if (Compiler.REPAIR)
+	    i=termination.constraintdependence.computeOrdering().iterator();
+	else
+	    i=state.vConstraints.iterator();
+	for (; i.hasNext();) {
+	    Constraint constraint;
+	    if (Compiler.REPAIR)
+		constraint= (Constraint) ((GraphNode)i.next()).getOwner();
+	    else
+		constraint=(Constraint)i.next();
+	    
             {
+		final SymbolTable st = constraint.getSymbolTable();
+		CodeWriter cr = new StandardCodeWriter(outputaux);
+		cr.pushSymbolTable(constraint.getSymbolTable());
 
-                final SymbolTable st = constraint.getSymbolTable();
-                
-                CodeWriter cr = new StandardCodeWriter(outputaux) {
-                        public SymbolTable getSymbolTable() { return st; }
-                    };
-
-                cr.outputline("// checking " + escape(constraint.toString()));
+		cr.outputline("// checking " + escape(constraint.toString()));
                 cr.startblock();
 
                 ListIterator quantifiers = constraint.quantifiers();
 
                 while (quantifiers.hasNext()) {
-                    Quantifier quantifier = (Quantifier) quantifiers.next();                   
+                    Quantifier quantifier = (Quantifier) quantifiers.next();
                     quantifier.generate_open(cr);
-                }            
+                }
 
                 cr.outputline("int maybe = 0;");
                         
@@ -629,26 +818,30 @@ public class RepairGenerator {
                 
                 cr.outputline("if (maybe)");
                 cr.startblock();
-                cr.outputline("printf(\"maybe fail " +  escape(constraint.toString()) + ". \");");
-                cr.outputline("exit(1);");
+                cr.outputline("printf(\"maybe fail " +  escape(constraint.toString()) + ". \\n\");");
+		//cr.outputline("exit(1);");
                 cr.endblock();
 
                 cr.outputline("else if (!" + constraintboolean.getSafeSymbol() + ")");
                 cr.startblock();
-                if (DEBUG)
-		    cr.outputline("printf(\"fail " + escape(constraint.toString()) + ". \");");
-
+                if (!Compiler.REPAIR||Compiler.GENERATEDEBUGHOOKS)
+		    cr.outputline("printf(\"fail " + escape(constraint.toString()) + ". \\n\");");
+		
+		if (Compiler.REPAIR) {
 		/* Do repairs */
 		/* Build new repair table */
 	        cr.outputline("if ("+repairtable.getSafeSymbol()+")");
 		cr.outputline("delete "+repairtable.getSafeSymbol()+";");
                 cr.outputline(repairtable.getSafeSymbol()+"=new RepairHash();");
-
 		
+		if (Compiler.GENERATEDEBUGHOOKS)
+		    cr.outputline("debughook();");
 		/* Compute cost of each repair */
 		VarDescriptor mincost=VarDescriptor.makeNew("mincost");
 		VarDescriptor mincostindex=VarDescriptor.makeNew("mincostindex");
-		DNFConstraint dnfconst=constraint.dnfconstraint;
+		Vector dnfconst=new Vector();
+		dnfconst.addAll((Set)termination.conjunctionmap.get(constraint));
+
 		if (dnfconst.size()<=1) {
 		    cr.outputline("int "+mincostindex.getSafeSymbol()+"=0;");
 		}
@@ -656,8 +849,8 @@ public class RepairGenerator {
 		    cr.outputline("int "+mincostindex.getSafeSymbol()+";");
 		    boolean first=true;
 		    for(int j=0;j<dnfconst.size();j++) {
-			Conjunction conj=dnfconst.get(j);
-			GraphNode gn=(GraphNode)termination.conjtonodemap.get(conj);
+			GraphNode gn=(GraphNode)dnfconst.get(j);
+			Conjunction conj=((TermNode)gn.getOwner()).getConjunction();
 			if (removed.contains(gn))
 			    continue;
 			
@@ -672,16 +865,16 @@ public class RepairGenerator {
 			    boolean negate=dpred.isNegated();
 			    VarDescriptor predvalue=VarDescriptor.makeNew("Predicatevalue");
 			    p.generate(cr,predvalue);
+			    if (k==0)
+				cr.outputline("int "+costvar.getSafeSymbol()+"=0;");
+			    
 			    if (negate)
 				cr.outputline("if (maybe||"+predvalue.getSafeSymbol()+")");
 			    else
 				cr.outputline("if (maybe||!"+predvalue.getSafeSymbol()+")");
-			    if (k==0)
-				cr.outputline("int "+costvar.getSafeSymbol()+"="+cost.getCost(dpred)+";");
-			    else
-				cr.outputline(costvar.getSafeSymbol()+"+="+cost.getCost(dpred)+";");
+			    cr.outputline(costvar.getSafeSymbol()+"+="+cost.getCost(dpred)+";");
 			}
-
+			
 			if(!first) {
 			    cr.outputline("if ("+costvar.getSafeSymbol()+"<"+mincost.getSafeSymbol()+")");
 			    cr.startblock();
@@ -695,11 +888,12 @@ public class RepairGenerator {
 		}
 		cr.outputline("switch("+mincostindex.getSafeSymbol()+") {");
 		for(int j=0;j<dnfconst.size();j++) {
-		    Conjunction conj=dnfconst.get(j);
-		    GraphNode gn=(GraphNode)termination.conjtonodemap.get(conj);
+		    GraphNode gn=(GraphNode)dnfconst.get(j);
+		    Conjunction conj=((TermNode)gn.getOwner()).getConjunction();
 		    if (removed.contains(gn))
 			continue;
 		    cr.outputline("case "+j+":");
+		    cr.startblock();
 		    for(int k=0;k<conj.size();k++) {
 			DNFPredicate dpred=conj.get(k);
 			Predicate p=dpred.getPredicate();
@@ -711,6 +905,8 @@ public class RepairGenerator {
 			else
 			    cr.outputline("if (maybe||!"+predvalue.getSafeSymbol()+")");
 			cr.startblock();
+			if (Compiler.GENERATEINSTRUMENT)
+			    cr.outputline("abstractcount++;");
 			if (p instanceof InclusionPredicate)
 			    generateinclusionrepair(conj,dpred, cr);
 			else if (p instanceof ExprPredicate) {
@@ -723,18 +919,18 @@ public class RepairGenerator {
 			cr.endblock();
 		    }
 		    /* Update model */
+		    cr.endblock();
 		    cr.outputline("break;");
 		}
 		cr.outputline("}");
-
-		cr.outputline(goodflag.getSafeSymbol()+"=0;");
+		
 		cr.outputline("if ("+oldmodel.getSafeSymbol()+")");
 		cr.outputline("delete "+oldmodel.getSafeSymbol()+";");
 		cr.outputline(oldmodel.getSafeSymbol()+"="+newmodel.getSafeSymbol()+";");
 		cr.outputline("goto rebuild;");  /* Rebuild model and all */
-
+		}
                 cr.endblock();
-
+		
                 while (quantifiers.hasPrevious()) {
                     Quantifier quantifier = (Quantifier) quantifiers.previous();
                     cr.endblock();
@@ -745,7 +941,6 @@ public class RepairGenerator {
             }
         }
 	CodeWriter cr = new StandardCodeWriter(outputaux);
-	cr.outputline("if ("+goodflag.getSafeSymbol()+")");
 	cr.startblock();
 	cr.outputline("if ("+repairtable.getSafeSymbol()+")");
 	cr.outputline("delete "+repairtable.getSafeSymbol()+";");
@@ -758,13 +953,21 @@ public class RepairGenerator {
 	cr.endblock();
 	cr.outputline("rebuild:");
 	cr.outputline(";");	
-	
     }
     
     private MultUpdateNode getmultupdatenode(Conjunction conj, DNFPredicate dpred, int repairtype) {
-	MultUpdateNode mun=null;
+	Set nodes=getmultupdatenodeset(conj,dpred,repairtype);
+	Iterator it=nodes.iterator();
+	if (it.hasNext())
+	    return (MultUpdateNode)it.next();
+	else
+	    return null;
+    }
+
+    private Set getmultupdatenodeset(Conjunction conj, DNFPredicate dpred, int repairtype) {
+	HashSet hs=new HashSet();
 	GraphNode gn=(GraphNode) termination.conjtonodemap.get(conj);
-	for(Iterator edgeit=gn.edges();(mun==null)&&edgeit.hasNext();) {
+	for(Iterator edgeit=gn.edges();edgeit.hasNext();) {
 	    GraphNode gn2=((GraphNode.Edge) edgeit.next()).getTarget();
 	    TermNode tn2=(TermNode)gn2.getOwner();
 	    if (tn2.getType()==TermNode.ABSTRACT) {
@@ -776,20 +979,54 @@ public class RepairGenerator {
 			if (!removed.contains(gn3)) {
 			    TermNode tn3=(TermNode)gn3.getOwner();
 			    if (tn3.getType()==TermNode.UPDATE) {
-				mun=tn3.getUpdate();
-				break;
+				hs.add(tn3.getUpdate());
 			    }
 			}
 		    }
 		}
 	    }
 	}
-	return mun;
+	return hs;
+    }
+
+    private AbstractRepair getabstractrepair(Conjunction conj, DNFPredicate dpred, int repairtype) {
+	HashSet hs=new HashSet();
+	MultUpdateNode mun=null;
+	GraphNode gn=(GraphNode) termination.conjtonodemap.get(conj);
+	for(Iterator edgeit=gn.edges();(mun==null)&&edgeit.hasNext();) {
+	    GraphNode gn2=((GraphNode.Edge) edgeit.next()).getTarget();
+	    TermNode tn2=(TermNode)gn2.getOwner();
+	    if (tn2.getType()==TermNode.ABSTRACT) {
+		AbstractRepair ar=tn2.getAbstract();
+		if (((repairtype==-1)||(ar.getType()==repairtype))&&
+		    ar.getPredicate()==dpred) {
+		    return ar;
+		}
+	    }
+	}
+	return null;
     }
 
-    public void generatecomparisonrepair(Conjunction conj, DNFPredicate dpred, CodeWriter cr){
-	MultUpdateNode munremove=getmultupdatenode(conj,dpred,AbstractRepair.REMOVEFROMRELATION);
-	MultUpdateNode munadd=getmultupdatenode(conj,dpred,AbstractRepair.ADDTORELATION);
+
+    /** Generates abstract (and concrete) repair for a comparison */
+
+    private void generatecomparisonrepair(Conjunction conj, DNFPredicate dpred, CodeWriter cr){
+	Set updates=getmultupdatenodeset(conj,dpred,AbstractRepair.MODIFYRELATION);
+	AbstractRepair ar=getabstractrepair(conj,dpred,AbstractRepair.MODIFYRELATION);
+	MultUpdateNode munmodify=null;
+	MultUpdateNode munadd=null;
+	MultUpdateNode munremove=null;
+	for(Iterator it=updates.iterator();it.hasNext();) {
+	    MultUpdateNode mun=(MultUpdateNode)it.next();
+	    if (mun.getType()==MultUpdateNode.ADD) {
+		munadd=mun;
+	    } else if (mun.getType()==MultUpdateNode.REMOVE) { 
+		munremove=mun;
+	    } else if (mun.getType()==MultUpdateNode.MODIFY) {
+		munmodify=mun;
+	    }
+	}
+	
 	ExprPredicate ep=(ExprPredicate)dpred.getPredicate();
 	RelationDescriptor rd=(RelationDescriptor)ep.getDescriptor();
 	boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
@@ -801,33 +1038,28 @@ public class RepairGenerator {
 	VarDescriptor leftside=VarDescriptor.makeNew("leftside");
 	VarDescriptor rightside=VarDescriptor.makeNew("rightside");
 	VarDescriptor newvalue=VarDescriptor.makeNew("newvalue");
-	if (!inverted) {
-	    expr.getLeftExpr().generate(cr,leftside);
+	boolean needremoveloop=ar.mayNeedFunctionEnforcement(state)&&ar.needsRemoves(state);
+
+	if (needremoveloop&&((munadd==null)||(munremove==null))) {
+	    System.out.println("Warning:  need to have individual remove operations for"+dpred.name());
+	    needremoveloop=false;
+	}
+	if (needremoveloop)
+	    cr.outputline("while (1) {");
+
+   	if (!inverted) {
+	    ((RelationExpr)expr.getLeftExpr()).getExpr().generate(cr,leftside);
 	    expr.getRightExpr().generate(cr,newvalue);
 	    cr.outputline(rd.getRange().getType().getGenerateType().getSafeSymbol()+" "+rightside.getSafeSymbol()+";");
 	    cr.outputline(rd.getSafeSymbol()+"_hash->get("+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
 	} else {
-	    expr.getLeftExpr().generate(cr,rightside);
+	    ((RelationExpr)expr.getLeftExpr()).getExpr().generate(cr,rightside);
 	    expr.getRightExpr().generate(cr,newvalue);
 	    cr.outputline(rd.getDomain().getType().getGenerateType().getSafeSymbol()+" "+leftside.getSafeSymbol()+";");
-	    cr.outputline(rd.getSafeSymbol()+"_hashinv->get("+leftside.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
+	    cr.outputline(rd.getSafeSymbol()+"_hashinv->get("+rightside.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
 	}
-	if (negated)
-	    if (opcode==Opcode.GT) {
-		opcode=Opcode.LE;
-	    } else if (opcode==Opcode.GE) {
-		opcode=Opcode.LT;
-	    } else if (opcode==Opcode.LT) {
-		opcode=Opcode.GE;
-	    } else if (opcode==Opcode.LE) {
-		opcode=Opcode.GT;
-	    } else if (opcode==Opcode.EQ) {
-		opcode=Opcode.NE;
-	    } else if (opcode==Opcode.NE) {
-		opcode=Opcode.EQ;
-	    } else {
-		throw new Error("Unrecognized Opcode");
-	    }
+
+	opcode=Opcode.translateOpcode(negated,opcode);
 
 	if (opcode==Opcode.GT) {
 	    cr.outputline(newvalue.getSafeSymbol()+"++;");
@@ -839,7 +1071,7 @@ public class RepairGenerator {
 	    /* Equal */
 	} else if (opcode==Opcode.EQ) {
 	    /* Equal */
-	} else if (opcode==Opcode.NE) {
+	} else if (opcode==Opcode.NE) { /* search for FLAGNE if this is changed*/
 	    cr.outputline(newvalue.getSafeSymbol()+"++;");
 	} else {
 	    throw new Error("Unrecognized Opcode");
@@ -847,6 +1079,35 @@ public class RepairGenerator {
 	/* Do abstract repairs */
 	if (usageimage) {
 	    cr.outputline(rd.getSafeSymbol()+"_hash->remove("+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
+	}
+	if (usageinvimage) {
+	    cr.outputline(rd.getSafeSymbol()+"_hashinv->remove("+rightside.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
+	}
+
+	if (needremoveloop) {
+	    if (!inverted) {
+		cr.outputline("if ("+rd.getSafeSymbol()+"_hash->contains("+leftside.getSafeSymbol()+")) {");
+	    } else {
+		cr.outputline("if ("+rd.getSafeSymbol()+"_hashinv->contains("+rightside.getSafeSymbol()+")) {");
+	    }
+	    for(int i=0;i<state.vRules.size();i++) {
+		Rule r=(Rule)state.vRules.get(i);
+		if (r.getInclusion().getTargetDescriptors().contains(rd)) {
+		    for(int j=0;j<munremove.numUpdates();j++) {
+			UpdateNode un=munremove.getUpdate(i);
+			if (un.getRule()==r) {
+				/* Update for rule r */
+			    String name=(String)updatenames.get(un);
+			    cr.outputline(repairtable.getSafeSymbol()+"->addrelation("+rd.getNum()+","+r.getNum()+","+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+",(int) &"+name+");");
+			}
+		    }
+		}
+	    }
+	    cr.outputline("continue;");
+	    cr.outputline("}");
+	}
+
+	if (usageimage) {
 	    if (!inverted) {
 		cr.outputline(rd.getSafeSymbol()+"_hash->add("+leftside.getSafeSymbol()+","+newvalue.getSafeSymbol()+");");
 	    } else {
@@ -854,7 +1115,6 @@ public class RepairGenerator {
 	    }
 	}
 	if (usageinvimage) {
-	    cr.outputline(rd.getSafeSymbol()+"_hashinv->remove("+rightside.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
 	    if (!inverted) {
 		cr.outputline(rd.getSafeSymbol()+"_hashinv->add("+newvalue.getSafeSymbol()+","+leftside.getSafeSymbol()+");");
 	    } else {
@@ -862,27 +1122,48 @@ public class RepairGenerator {
 	    }
 	}
 	/* Do concrete repairs */
-	/* Start with scheduling removal */
-	for(int i=0;i<state.vRules.size();i++) {
-	    Rule r=(Rule)state.vRules.get(i);
-	    if (r.getInclusion().getTargetDescriptors().contains(rd)) {
-		for(int j=0;j<munremove.numUpdates();j++) {
-		    UpdateNode un=munremove.getUpdate(i);
-		    if (un.getRule()==r) {
-			/* Update for rule r */
-			String name=(String)updatenames.get(un);
-			cr.outputline(repairtable.getSafeSymbol()+"->addrelation("+rd.getNum()+","+r.getNum()+","+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+",(int) &"+name+");");
+	if (munmodify!=null&&(!ar.mayNeedFunctionEnforcement(state))||(munadd==null)||(ar.needsRemoves(state)&&(munremove==null))) {
+	    for(int i=0;i<state.vRules.size();i++) {
+		Rule r=(Rule)state.vRules.get(i);
+		if (r.getInclusion().getTargetDescriptors().contains(rd)) {
+		    for(int j=0;j<munmodify.numUpdates();j++) {
+			UpdateNode un=munmodify.getUpdate(j);
+			if (un.getRule()==r) {
+			    /* Update for rule r */
+			    String name=(String)updatenames.get(un);
+			    cr.outputline(repairtable.getSafeSymbol()+"->addrelation("+rd.getNum()+","+r.getNum()+","+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+",(int) &"+name+","+newvalue.getSafeSymbol()+");");
+			}
 		    }
 		}
 	    }
-	}
-	/* Now do addition */
-	UpdateNode un=munadd.getUpdate(0);
-	String name=(String)updatenames.get(un);
-	if (!inverted) {
-	    cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+leftside.getSafeSymbol()+","+newvalue.getSafeSymbol()+");");
 	} else {
-	    cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+newvalue.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
+	    /* Start with scheduling removal */
+	    if (ar.needsRemoves(state))
+		for(int i=0;i<state.vRules.size();i++) {
+		    Rule r=(Rule)state.vRules.get(i);
+		    if (r.getInclusion().getTargetDescriptors().contains(rd)) {
+			for(int j=0;j<munremove.numUpdates();j++) {
+			    UpdateNode un=munremove.getUpdate(i);
+			    if (un.getRule()==r) {
+				/* Update for rule r */
+				String name=(String)updatenames.get(un);
+				cr.outputline(repairtable.getSafeSymbol()+"->addrelation("+rd.getNum()+","+r.getNum()+","+leftside.getSafeSymbol()+","+rightside.getSafeSymbol()+",(int) &"+name+");");
+			    }
+			}
+		    }
+		}
+	    /* Now do addition */
+	    UpdateNode un=munadd.getUpdate(0);
+	    String name=(String)updatenames.get(un);
+	    if (!inverted) {
+		cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+leftside.getSafeSymbol()+","+newvalue.getSafeSymbol()+");");
+	    } else {
+		cr.outputline(name+"(this,"+newmodel.getSafeSymbol()+","+repairtable.getSafeSymbol()+","+newvalue.getSafeSymbol()+","+rightside.getSafeSymbol()+");");
+	    }
+	}
+	if (needremoveloop) {
+	    cr.outputline("break;");
+	    cr.outputline("}");
 	}
     }
 
@@ -890,25 +1171,8 @@ public class RepairGenerator {
 	ExprPredicate ep=(ExprPredicate)dpred.getPredicate();
 	OpExpr expr=(OpExpr)ep.expr;
 	Opcode opcode=expr.getOpcode();
-	{
-	    boolean negated=dpred.isNegated();
-	    if (negated)
-		if (opcode==Opcode.GT) {
-		    opcode=Opcode.LE;
-		} else if (opcode==Opcode.GE) {
-		    opcode=Opcode.LT;
-		} else if (opcode==Opcode.LT) {
-		    opcode=Opcode.GE;
-		} else if (opcode==Opcode.LE) {
-		    opcode=Opcode.GT;
-		} else if (opcode==Opcode.EQ) {
-		    opcode=Opcode.NE;
-		} else if (opcode==Opcode.NE) {
-		    opcode=Opcode.EQ;
-		} else {
-		    throw new Error("Unrecognized Opcode");
-		}	
-	}
+	opcode=Opcode.translateOpcode(dpred.isNegated(),opcode);
+
 	MultUpdateNode munremove;
 
 	MultUpdateNode munadd;
@@ -919,7 +1183,7 @@ public class RepairGenerator {
 	    munremove=getmultupdatenode(conj,dpred,AbstractRepair.REMOVEFROMSET);
 	    munadd=getmultupdatenode(conj,dpred,AbstractRepair.ADDTOSET);
 	}
-	int size=ep.leftsize();
+	int size=ep.rightSize();
 	VarDescriptor sizevar=VarDescriptor.makeNew("size");
 	((OpExpr)expr).left.generate(cr, sizevar);
 	VarDescriptor change=VarDescriptor.makeNew("change");
@@ -956,6 +1220,12 @@ public class RepairGenerator {
 	} else {
 	    throw new Error("Unrecognized Opcode");
 	}
+
+// In some cases the analysis has determined that generating removes
+// is unnecessary
+	if (generateremove&&munremove==null) 
+	    generateremove=false;
+
 	Descriptor d=ep.getDescriptor();
 	if (generateremove) {
 	    cr.outputline("for(;"+change.getSafeSymbol()+"<0;"+change.getSafeSymbol()+"++)");
@@ -965,11 +1235,11 @@ public class RepairGenerator {
 	    VarDescriptor rightvar=VarDescriptor.makeNew("rightvar");
 	    if (d instanceof RelationDescriptor) {
 		if (ep.inverted()) {
-		    rightvar=((ImageSetExpr)((SizeofExpr)((OpExpr)expr).left).setexpr).getVar();
+		    ((ImageSetExpr)((SizeofExpr)expr.left).setexpr).generate_leftside(cr,rightvar);
 		    cr.outputline("int "+leftvar.getSafeSymbol()+";");
 		    cr.outputline(d.getSafeSymbol()+"_hashinv->get((int)"+rightvar.getSafeSymbol()+","+leftvar.getSafeSymbol()+");");
 		} else {
-		    leftvar=((ImageSetExpr)((SizeofExpr)((OpExpr)expr).left).setexpr).getVar();
+		    ((ImageSetExpr)((SizeofExpr)expr.left).setexpr).generate_leftside(cr,leftvar);
 		    cr.outputline("int "+rightvar.getSafeSymbol()+"=0;");
 		    cr.outputline(d.getSafeSymbol()+"_hash->get((int)"+leftvar.getSafeSymbol()+","+rightvar.getSafeSymbol()+");");
 		}
@@ -1008,32 +1278,41 @@ public class RepairGenerator {
 	    }
 	    cr.endblock();
 	}
+
+// In some cases the analysis has determined that generating removes
+// is unnecessary
+	if (generateadd&&munadd==null) 
+	    generateadd=false;
+
 	if (generateadd) {
 
 	    cr.outputline("for(;"+change.getSafeSymbol()+">0;"+change.getSafeSymbol()+"--)");
 	    cr.startblock();
 	    VarDescriptor newobject=VarDescriptor.makeNew("newobject");
 	    if (d instanceof RelationDescriptor) {
-		VarDescriptor otherside=((ImageSetExpr)((SizeofExpr)((OpExpr)ep.expr).left).setexpr).vd;
+		VarDescriptor otherside=VarDescriptor.makeNew("otherside");
+		((ImageSetExpr)((SizeofExpr)expr.left).setexpr).generate_leftside(cr,otherside);
+		
 		RelationDescriptor rd=(RelationDescriptor)d;
-		if (sources.relsetSource(rd,!ep.inverted())) {
+		if (termination.sources.relsetSource(rd,!ep.inverted())) {
 		    /* Set Source */
-		    SetDescriptor sd=sources.relgetSourceSet(rd,!ep.inverted());
+		    SetDescriptor sd=termination.sources.relgetSourceSet(rd,!ep.inverted());
 		    VarDescriptor iterator=VarDescriptor.makeNew("iterator");
 		    cr.outputline(sd.getType().getGenerateType().getSafeSymbol() +" "+newobject.getSafeSymbol()+";");
-		    cr.outputline("for("+iterator.getSafeSymbol()+"="+sd.getSafeSymbol()+"_hash->iterator();"+iterator.getSafeSymbol()+".hasNext();)");
+		    cr.outputline("SimpleIterator "+iterator.getSafeSymbol()+";");
+		    cr.outputline("for("+sd.getSafeSymbol()+"_hash->iterator("+ iterator.getSafeSymbol() +");"+iterator.getSafeSymbol()+".hasNext();)");
 		    cr.startblock();
 		    if (ep.inverted()) {
-			cr.outputline("if !"+rd.getSafeSymbol()+"_hashinv->contains("+iterator.getSafeSymbol()+"->key(),"+otherside.getSafeSymbol()+")");
+			cr.outputline("if (!"+rd.getSafeSymbol()+"_hashinv->contains("+iterator.getSafeSymbol()+".key(),"+otherside.getSafeSymbol()+"))");
 		    } else {
-			cr.outputline("if !"+rd.getSafeSymbol()+"_hash->contains("+otherside.getSafeSymbol()+","+iterator.getSafeSymbol()+"->key())");
+			cr.outputline("if (!"+rd.getSafeSymbol()+"_hash->contains("+otherside.getSafeSymbol()+","+iterator.getSafeSymbol()+".key()))");
 		    }
 		    cr.outputline(newobject.getSafeSymbol()+"="+iterator.getSafeSymbol()+".key();");
-		    cr.outputline(iterator.getSafeSymbol()+"->next();");
+		    cr.outputline(iterator.getSafeSymbol()+".next();");
 		    cr.endblock();
-		} else if (sources.relallocSource(rd,!ep.inverted())) {
+		} else if (termination.sources.relallocSource(rd,!ep.inverted())) {
 		    /* Allocation Source*/
-		    sources.relgenerateSourceAlloc(cr,newobject,rd,!ep.inverted());
+		    termination.sources.relgenerateSourceAlloc(cr,newobject,rd,!ep.inverted());
 		} else throw new Error("No source for adding to Relation");
 		if (ep.inverted()) {
 		    boolean usageimage=rd.testUsage(RelationDescriptor.IMAGE);
@@ -1059,21 +1338,22 @@ public class RepairGenerator {
 		}
 	    } else {
 		SetDescriptor sd=(SetDescriptor)d;
-		if (sources.setSource(sd)) {
+		if (termination.sources.setSource(sd)) {
 		    /* Set Source */
 		    /* Set Source */
-		    SetDescriptor sourcesd=sources.getSourceSet(sd);
+		    SetDescriptor sourcesd=termination.sources.getSourceSet(sd);
 		    VarDescriptor iterator=VarDescriptor.makeNew("iterator");
 		    cr.outputline(sourcesd.getType().getGenerateType().getSafeSymbol() +" "+newobject.getSafeSymbol()+";");
-		    cr.outputline("for("+iterator.getSafeSymbol()+"="+sourcesd.getSafeSymbol()+"_hash->iterator();"+iterator.getSafeSymbol()+".hasNext();)");
+		    cr.outputline("SimpleIterator "+iterator.getSafeSymbol()+";");
+		    cr.outputline("for("+sourcesd.getSafeSymbol()+"_hash->iterator("+iterator.getSafeSymbol()+");"+iterator.getSafeSymbol()+".hasNext();)");
 		    cr.startblock();
-		    cr.outputline("if !"+sd.getSafeSymbol()+"_hash->contains("+iterator.getSafeSymbol()+"->key())");
+		    cr.outputline("if (!"+sd.getSafeSymbol()+"_hash->contains("+iterator.getSafeSymbol()+".key()))");
 		    cr.outputline(newobject.getSafeSymbol()+"="+iterator.getSafeSymbol()+".key();");
-		    cr.outputline(iterator.getSafeSymbol()+"->next();");
+		    cr.outputline(iterator.getSafeSymbol()+".next();");
 		    cr.endblock();
-		} else if (sources.allocSource(sd)) {
+		} else if (termination.sources.allocSource(sd)) {
 		    /* Allocation Source*/
-		    sources.generateSourceAlloc(cr,newobject,sd);
+		    termination.sources.generateSourceAlloc(cr,newobject,sd);
 		} else throw new Error("No source for adding to Set");
 		cr.outputline(sd.getSafeSymbol()+"_hash->add("+newobject.getSafeSymbol()+","+newobject.getSafeSymbol()+");");
 		UpdateNode un=munadd.getUpdate(0);
@@ -1114,7 +1394,7 @@ public class RepairGenerator {
 		    Rule r=(Rule)state.vRules.get(i);
 		    if (r.getInclusion().getTargetDescriptors().contains(rd)) {
 			for(int j=0;j<mun.numUpdates();j++) {
-			    UpdateNode un=mun.getUpdate(i);
+			    UpdateNode un=mun.getUpdate(j);
 			    if (un.getRule()==r) {
 				/* Update for rule rule r */
 				String name=(String)updatenames.get(un);
@@ -1135,7 +1415,7 @@ public class RepairGenerator {
 		    Rule r=(Rule)state.vRules.get(i);
 		    if (r.getInclusion().getTargetDescriptors().contains(sd)) {
 			for(int j=0;j<mun.numUpdates();j++) {
-			    UpdateNode un=mun.getUpdate(i);
+			    UpdateNode un=mun.getUpdate(j);
 			    if (un.getRule()==r) {
 				/* Update for rule rule r */
 				String name=(String)updatenames.get(un);
@@ -1184,8 +1464,6 @@ public class RepairGenerator {
 	}
     }
 
-
-
     public static Vector getrulelist(Descriptor d) {
         Vector dispatchrules = new Vector();
         Vector rules = State.currentState.vRules;
@@ -1206,6 +1484,8 @@ public class RepairGenerator {
     }
 
     private boolean need_compensation(Rule r) {
+	if (!Compiler.REPAIR)
+	    return false;
 	GraphNode gn=(GraphNode)termination.scopefalsify.get(r);
 	for(Iterator edgeit=gn.edges();edgeit.hasNext();) {
 	    GraphNode.Edge edge=(GraphNode.Edge)edgeit.next();
@@ -1247,97 +1527,153 @@ public class RepairGenerator {
 	    return;
 
         cr.outputline("// RELATION DISPATCH ");
-	cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
-	if (usageimage)
-	    cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+rd.getJustSafeSymbol()+"_hash->contains("+leftvar+","+rightvar+"))");
-	else
-	    cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+rd.getJustSafeSymbol()+"_hashinv->contains("+rightvar+","+leftvar+"))");
-	cr.startblock(); {
-	    /* Adding new item */
-	    /* Perform safety checks */
-	    cr.outputline("if ("+repairtable.getSafeSymbol()+"&&");
-	    cr.outputline(repairtable.getSafeSymbol()+"->containsrelation("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+"))");
+	if (Compiler.REPAIR) {
+	    cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
+	    if (usageimage)
+		cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+rd.getJustSafeSymbol()+"_hash->contains("+leftvar+","+rightvar+"))");
+	    else
+		cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+rd.getJustSafeSymbol()+"_hashinv->contains("+rightvar+","+leftvar+"))");
+
 	    cr.startblock(); {
-		/* Have update to call into */
-		VarDescriptor funptr=VarDescriptor.makeNew("updateptr");
-		String parttype="";
-		for(int i=0;i<currentrule.numQuantifiers();i++) {
-		    if (currentrule.getQuantifier(i) instanceof RelationQuantifier)
-			parttype=parttype+", int, int";
-		    else
-			parttype=parttype+", int";
-		}
-		cr.outputline("void (*"+funptr.getSafeSymbol()+") ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")=");
-		cr.outputline("(void (*) ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")) "+repairtable.getSafeSymbol()+"->getrelation("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
-		String methodcall="("+funptr.getSafeSymbol()+") (this,"+oldmodel.getSafeSymbol()+","+repairtable.getSafeSymbol();
-		for(int i=0;i<currentrule.numQuantifiers();i++) {
-		    Quantifier q=currentrule.getQuantifier(i);
-		    if (q instanceof SetQuantifier) {
-			SetQuantifier sq=(SetQuantifier) q;
-			methodcall+=","+sq.getVar().getSafeSymbol();
-		    } else if (q instanceof RelationQuantifier) {
-			RelationQuantifier rq=(RelationQuantifier) q;
-			methodcall+=","+rq.x.getSafeSymbol();
-			methodcall+=","+rq.y.getSafeSymbol();
-		    } else if (q instanceof ForQuantifier) {
-			ForQuantifier fq=(ForQuantifier) q;
-			methodcall+=","+fq.getVar().getSafeSymbol();
+		/* Adding new item */
+		/* Perform safety checks */
+		cr.outputline("if ("+repairtable.getSafeSymbol()+"&&");
+		cr.outputline(repairtable.getSafeSymbol()+"->containsrelation("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+"))");
+		cr.startblock(); {
+		    /* Have update to call into */
+		    VarDescriptor mdfyptr=VarDescriptor.makeNew("modifyptr");
+		    VarDescriptor ismdfyptr=VarDescriptor.makeNew("ismodifyptr");
+		    cr.outputline("int "+ismdfyptr.getSafeSymbol()+"="+repairtable.getSafeSymbol()+"->ismodify("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
+
+
+
+		    
+		    String parttype="";
+		    for(int i=0;i<currentrule.numQuantifiers();i++) {
+			if (currentrule.getQuantifier(i) instanceof RelationQuantifier)
+			    parttype=parttype+", int, int";
+			else
+			    parttype=parttype+", int";
+		    }
+		    VarDescriptor funptr=VarDescriptor.makeNew("updateptr");
+		    VarDescriptor tmpptr=VarDescriptor.makeNew("tempupdateptr");
+		    
+		    String methodcall="("+funptr.getSafeSymbol()+") (this,"+oldmodel.getSafeSymbol()+","+repairtable.getSafeSymbol();
+		    for(int i=0;i<currentrule.numQuantifiers();i++) {
+			Quantifier q=currentrule.getQuantifier(i);
+			if (q instanceof SetQuantifier) {
+			    SetQuantifier sq=(SetQuantifier) q;
+			    methodcall+=","+sq.getVar().getSafeSymbol();
+			} else if (q instanceof RelationQuantifier) {
+			    RelationQuantifier rq=(RelationQuantifier) q;
+			    methodcall+=","+rq.x.getSafeSymbol();
+			    methodcall+=","+rq.y.getSafeSymbol();
+			} else if (q instanceof ForQuantifier) {
+			    ForQuantifier fq=(ForQuantifier) q;
+			    methodcall+=","+fq.getVar().getSafeSymbol();
+			}
 		    }
+		    
+		    
+		    
+		    cr.outputline("void *"+tmpptr.getSafeSymbol()+"=");
+		    cr.outputline("(void *) "+repairtable.getSafeSymbol()+"->getrelation("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
+		    cr.outputline("if ("+ismdfyptr.getSafeSymbol()+")");
+		    {
+			cr.startblock();
+			cr.outputline("int "+mdfyptr.getSafeSymbol()+"="+repairtable.getSafeSymbol()+"->getrelation2("+rd.getNum()+","+currentrule.getNum()+","+leftvar+","+rightvar+");");
+			cr.outputline("void (*"+funptr.getSafeSymbol()+") ("+name+"_state *,"+name+"*,RepairHash *"+parttype+",int,int,int)="+"(void (*) ("+name+"_state *,"+name+"*,RepairHash *"+parttype+",int,int,int)) "+tmpptr.getSafeSymbol()+";");
+			cr.outputline(methodcall+","+leftvar+", "+rightvar+", "+mdfyptr.getSafeSymbol() +");");
+			cr.endblock();
+		    }
+		    cr.outputline("else ");
+		    {
+			cr.startblock();
+			cr.outputline("void (*"+funptr.getSafeSymbol()+") ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")="+"(void (*) ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")) "+tmpptr.getSafeSymbol()+";");
+			cr.outputline(methodcall+");");
+			cr.endblock();
+		    }
+		    cr.outputline("delete "+newmodel.getSafeSymbol()+";");
+		    cr.outputline("goto rebuild;");
 		}
-		methodcall+=");";
-		cr.outputline(methodcall);
-		cr.outputline(goodflag.getSafeSymbol()+"=0;");
-		cr.outputline("continue;");
-	    }
-	    cr.endblock();
-	    /* Build standard compensation actions */
-	    if (need_compensation(currentrule)) {
-		UpdateNode un=find_compensation(currentrule);
-		String name=(String)updatenames.get(un);
-		usedupdates.add(un); /* Mark as used */
-		String methodcall=name+"(this,"+oldmodel.getSafeSymbol()+","+repairtable.getSafeSymbol();
-		for(int i=0;i<currentrule.numQuantifiers();i++) {
-		    Quantifier q=currentrule.getQuantifier(i);
-		    if (q instanceof SetQuantifier) {
-			SetQuantifier sq=(SetQuantifier) q;
-			methodcall+=","+sq.getVar().getSafeSymbol();
-		    } else if (q instanceof RelationQuantifier) {
-			RelationQuantifier rq=(RelationQuantifier) q;
-			methodcall+=","+rq.x.getSafeSymbol();
-			methodcall+=","+rq.y.getSafeSymbol();
-		    } else if (q instanceof ForQuantifier) {
-			ForQuantifier fq=(ForQuantifier) q;
-			methodcall+=","+fq.getVar().getSafeSymbol();
+		cr.endblock();
+		
+		/* Build standard compensation actions */
+		if (need_compensation(currentrule)) {
+		    UpdateNode un=find_compensation(currentrule);
+		    String name=(String)updatenames.get(un);
+		    usedupdates.add(un); /* Mark as used */
+		    String methodcall=name+"(this,"+oldmodel.getSafeSymbol()+","+repairtable.getSafeSymbol();
+		    for(int i=0;i<currentrule.numQuantifiers();i++) {
+			Quantifier q=currentrule.getQuantifier(i);
+			if (q instanceof SetQuantifier) {
+			    SetQuantifier sq=(SetQuantifier) q;
+			    methodcall+=","+sq.getVar().getSafeSymbol();
+			} else if (q instanceof RelationQuantifier) {
+			    RelationQuantifier rq=(RelationQuantifier) q;
+			    methodcall+=","+rq.x.getSafeSymbol();
+			    methodcall+=","+rq.y.getSafeSymbol();
+			} else if (q instanceof ForQuantifier) {
+			    ForQuantifier fq=(ForQuantifier) q;
+			    methodcall+=","+fq.getVar().getSafeSymbol();
+			}
 		    }
+		    methodcall+=");";
+		    cr.outputline(methodcall);
+		    cr.outputline("delete "+newmodel.getSafeSymbol()+";");
+		    cr.outputline("goto rebuild;");
 		}
-		methodcall+=");";
-		cr.outputline(methodcall);
-		cr.outputline(goodflag.getSafeSymbol()+"=0;");
-		cr.outputline("continue;");
 	    }
+	    cr.endblock();
 	}
-	cr.endblock();
 
         String addeditem = (VarDescriptor.makeNew("addeditem")).getSafeSymbol();
-	cr.outputline("int " + addeditem + ";");
+	cr.outputline("int " + addeditem + "=0;");
+
+	String ifstring="if (!maybe&&";
+	boolean dogenerate=false;
+	if (rd.getDomain().getType() instanceof StructureTypeDescriptor)  {
+	    dogenerate=true;
+	    ifstring+=leftvar;
+	}
+
+	if (rd.getRange().getType() instanceof StructureTypeDescriptor)  {
+	    if (dogenerate)
+		ifstring+="&&"+rightvar;
+	    else
+		ifstring+=rightvar;
+	    dogenerate=true;
+	}
+
+	ifstring+=")";
+
 	if (rd.testUsage(RelationDescriptor.IMAGE)) {
+	    cr.outputline(ifstring);
 	    cr.outputline(addeditem + " = " + rd.getSafeSymbol() + "_hash->add((int)" + leftvar + ", (int)" + rightvar+ ");");
 	}
 	
 	if (rd.testUsage(RelationDescriptor.INVIMAGE)) {
+	    cr.outputline(ifstring);
 	    cr.outputline(addeditem + " = " + rd.getSafeSymbol() + "_hashinv->add((int)" + rightvar + ", (int)" + leftvar + ");");
 	}
 	
-	cr.outputline("if (" + addeditem + ")");
-	cr.startblock();
 
         Vector dispatchrules = getrulelist(rd);
         
+	Set toremove=new HashSet();
+	for(int i=0;i<dispatchrules.size();i++) {
+	    Rule r=(Rule)dispatchrules.get(i);
+	    if (!ruleset.contains(r))
+		toremove.add(r);
+	}
+	dispatchrules.removeAll(toremove);
         if (dispatchrules.size() == 0) {
             cr.outputline("// nothing to dispatch");
-	    cr.endblock();
             return;
         }
+
+	cr.outputline("if (" + addeditem + ")");
+	cr.startblock();
        
         for(int i = 0; i < dispatchrules.size(); i++) {
             Rule rule = (Rule) dispatchrules.elementAt(i);
@@ -1354,97 +1690,128 @@ public class RepairGenerator {
 		}
 	    }
         }
+
 	cr.endblock();
     }
 
 
     public void generate_dispatch(CodeWriter cr, SetDescriptor sd, String setvar) {
-               
-        cr.outputline("// SET DISPATCH ");
-
-	cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
-	cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+sd.getJustSafeSymbol()+"_hash->contains("+setvar+"))");
-	cr.startblock(); {
-	    /* Adding new item */
-	    /* Perform safety checks */
-	    cr.outputline("if ("+repairtable.getSafeSymbol()+"&&");
-	    cr.outputline(repairtable.getSafeSymbol()+"->containsset("+sd.getNum()+","+currentrule.getNum()+","+setvar+"))");
+	cr.outputline("// SET DISPATCH ");
+	if (Compiler.REPAIR) {
+	    cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
+	    cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+sd.getJustSafeSymbol()+"_hash->contains("+setvar+"))");
 	    cr.startblock(); {
-		/* Have update to call into */
-		VarDescriptor funptr=VarDescriptor.makeNew("updateptr");
-		String parttype="";
-		for(int i=0;i<currentrule.numQuantifiers();i++) {
-		    if (currentrule.getQuantifier(i) instanceof RelationQuantifier)
-			parttype=parttype+", int, int";
-		    else
-			parttype=parttype+", int";
-		}
-		cr.outputline("void (*"+funptr.getSafeSymbol()+") ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")=");
-		cr.outputline("(void (*) ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")) "+repairtable.getSafeSymbol()+"->getset("+sd.getNum()+","+currentrule.getNum()+","+setvar+");");
-		String methodcall="("+funptr.getSafeSymbol()+") (this,"+oldmodel.getSafeSymbol()+","+
-			      repairtable.getSafeSymbol();
-		for(int i=0;i<currentrule.numQuantifiers();i++) {
-		    Quantifier q=currentrule.getQuantifier(i);
-		    if (q instanceof SetQuantifier) {
-			SetQuantifier sq=(SetQuantifier) q;
-			methodcall+=","+sq.getVar().getSafeSymbol();
-		    } else if (q instanceof RelationQuantifier) {
-			RelationQuantifier rq=(RelationQuantifier) q;
-			methodcall+=","+rq.x.getSafeSymbol();
-			methodcall+=","+rq.y.getSafeSymbol();
-		    } else if (q instanceof ForQuantifier) {
-			ForQuantifier fq=(ForQuantifier) q;
-			methodcall+=","+fq.getVar().getSafeSymbol();
+		/* Adding new item */
+		/* See if there is an outstanding update in the repairtable */
+		cr.outputline("if ("+repairtable.getSafeSymbol()+"&&");
+		cr.outputline(repairtable.getSafeSymbol()+"->containsset("+sd.getNum()+","+currentrule.getNum()+","+setvar+"))");
+		cr.startblock(); {
+		    /* Have update to call into */
+		    VarDescriptor funptr=VarDescriptor.makeNew("updateptr");
+		    String parttype="";
+		    for(int i=0;i<currentrule.numQuantifiers();i++) {
+			if (currentrule.getQuantifier(i) instanceof RelationQuantifier)
+			    parttype=parttype+", int, int";
+			else
+			    parttype=parttype+", int";
+		    }
+		    cr.outputline("void (*"+funptr.getSafeSymbol()+") ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")=");
+		    cr.outputline("(void (*) ("+name+"_state *,"+name+"*,RepairHash *"+parttype+")) "+repairtable.getSafeSymbol()+"->getset("+sd.getNum()+","+currentrule.getNum()+","+setvar+");");
+		    String methodcall="("+funptr.getSafeSymbol()+") (this,"+oldmodel.getSafeSymbol()+","+
+			repairtable.getSafeSymbol();
+		    for(int i=0;i<currentrule.numQuantifiers();i++) {
+			Quantifier q=currentrule.getQuantifier(i);
+			if (q instanceof SetQuantifier) {
+			    SetQuantifier sq=(SetQuantifier) q;
+			    methodcall+=","+sq.getVar().getSafeSymbol();
+			} else if (q instanceof RelationQuantifier) {
+			    RelationQuantifier rq=(RelationQuantifier) q;
+			    methodcall+=","+rq.x.getSafeSymbol();
+			    methodcall+=","+rq.y.getSafeSymbol();
+			} else if (q instanceof ForQuantifier) {
+			    ForQuantifier fq=(ForQuantifier) q;
+			    methodcall+=","+fq.getVar().getSafeSymbol();
+			}
 		    }
+		    methodcall+=");";
+		    cr.outputline(methodcall);
+		    cr.outputline("delete "+newmodel.getSafeSymbol()+";");
+		    cr.outputline("goto rebuild;");
 		}
-		methodcall+=");";
-		cr.outputline(methodcall);
-		cr.outputline(goodflag.getSafeSymbol()+"=0;");
-		cr.outputline("continue;");
-	    }
-	    cr.endblock();
-	    /* Build standard compensation actions */
-	    if (need_compensation(currentrule)) {
-		UpdateNode un=find_compensation(currentrule);
-		String name=(String)updatenames.get(un);
-		usedupdates.add(un); /* Mark as used */
-
-		String methodcall=name+"(this,"+oldmodel.getSafeSymbol()+","+
-			      repairtable.getSafeSymbol();
-		for(int i=0;i<currentrule.numQuantifiers();i++) {
-		    Quantifier q=currentrule.getQuantifier(i);
-		    if (q instanceof SetQuantifier) {
-			SetQuantifier sq=(SetQuantifier) q;
-			methodcall+=","+sq.getVar().getSafeSymbol();
-		    } else if (q instanceof RelationQuantifier) {
-			RelationQuantifier rq=(RelationQuantifier) q;
-			methodcall+=","+rq.x.getSafeSymbol();
-			methodcall+=","+rq.y.getSafeSymbol();
-		    } else if (q instanceof ForQuantifier) {
-			ForQuantifier fq=(ForQuantifier) q;
-			methodcall+=","+fq.getVar().getSafeSymbol();
+		cr.endblock();
+		/* Build standard compensation actions */
+		Vector ruleset=new Vector();
+		ruleset.add(currentrule);
+		if (state.implicitruleinv.containsKey(currentrule))
+		    ruleset.addAll((Set)state.implicitruleinv.get(currentrule));
+		for(int i=0;i<ruleset.size();i++) {
+		    Rule itrule=(Rule)ruleset.get(i);
+		    
+		    if (need_compensation(itrule)) {
+			UpdateNode un=find_compensation(itrule);
+			String name=(String)updatenames.get(un);
+			usedupdates.add(un); /* Mark as used */
+			
+			String methodcall=name+"(this,"+oldmodel.getSafeSymbol()+","+
+			    repairtable.getSafeSymbol();
+			for(int j=0;j<currentrule.numQuantifiers();j++) {
+			    Quantifier q=currentrule.getQuantifier(j);
+			    if (q instanceof SetQuantifier) {
+				SetQuantifier sq=(SetQuantifier) q;
+				methodcall+=","+sq.getVar().getSafeSymbol();
+			    } else if (q instanceof RelationQuantifier) {
+				RelationQuantifier rq=(RelationQuantifier) q;
+				methodcall+=","+rq.x.getSafeSymbol();
+				methodcall+=","+rq.y.getSafeSymbol();
+			    } else if (q instanceof ForQuantifier) {
+				ForQuantifier fq=(ForQuantifier) q;
+				methodcall+=","+fq.getVar().getSafeSymbol();
+			    }
+			}
+			methodcall+=");";
+			if (currentrule!=itrule) {
+			    SetDescriptor sdrule=((SetInclusion)itrule.getInclusion()).getSet();
+			    cr.outputline("if ("+oldmodel.getSafeSymbol()+"&&");
+			    cr.outputline("!"+oldmodel.getSafeSymbol() +"->"+sdrule.getJustSafeSymbol()+"_hash->contains("+setvar+"))");
+			    cr.startblock();
+			}
+			cr.outputline(methodcall);
+			cr.outputline("delete "+newmodel.getSafeSymbol()+";");
+			cr.outputline("goto rebuild;");
+			cr.endblock();
 		    }
+		    if (currentrule==itrule)
+			cr.endblock();
 		}
-		methodcall+=");";
-		cr.outputline(methodcall);
-		cr.outputline(goodflag.getSafeSymbol()+"=0;");
-		cr.outputline("continue;");
 	    }
 	}
-	cr.endblock();
 
         String addeditem = (VarDescriptor.makeNew("addeditem")).getSafeSymbol();
-	cr.outputline("int " + addeditem + " = 1;");
+	cr.outputline("int " + addeditem + " = 0;");
+	if (sd.getType() instanceof StructureTypeDescriptor)  {
+	    cr.outputline("if (!maybe&&"+setvar+")");
+	} else
+	    cr.outputline("if (!maybe)");
 	cr.outputline(addeditem + " = " + sd.getSafeSymbol() + "_hash->add((int)" + setvar +  ", (int)" + setvar + ");");
 	cr.startblock();
         Vector dispatchrules = getrulelist(sd);
 
+	Set toremove=new HashSet();
+	for(int i=0;i<dispatchrules.size();i++) {
+	    Rule r=(Rule)dispatchrules.get(i);
+	    if (!ruleset.contains(r))
+		toremove.add(r);
+	}
+	dispatchrules.removeAll(toremove);
+
         if (dispatchrules.size() == 0) {
             cr.outputline("// nothing to dispatch");
 	    cr.endblock();
             return;
         }
-
+	/* Add item to worklist if new */
+	cr.outputline("if ("+addeditem+")");
+	cr.startblock();
         for(int i = 0; i < dispatchrules.size(); i++) {
             Rule rule = (Rule) dispatchrules.elementAt(i);
 	    if (SetDescriptor.expand(rule.getGuardExpr().getRequiredDescriptors()).contains(sd)) {
@@ -1461,5 +1828,6 @@ public class RepairGenerator {
 	    }
 	}
 	cr.endblock();
+	cr.endblock();
     }
 }