Display reason treatment and postprocess on solver's info header.

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/ConflictMap.java

@@ -118,6 +118,11 @@ public class ConflictMap extends MapPb implements IConflict {
                 return ConflictMap.createConflict(cpb, level, noRemove, skip,
                         postprocess, stats);
             }
+
+            @Override
+            public String toString() {
+                return "Default Sat4j cutting planes";
+            }
         };
     }
 

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/ConflictMapReduceByGCD.java

@@ -39,6 +39,11 @@ public class ConflictMapReduceByGCD extends ConflictMap {
                 return ConflictMapReduceByGCD.createConflict(cpb, level,
                         noRemove, skip, postprocess, stats);
             }
+
+            @Override
+            public String toString() {
+                return "Divide by gcd the constraint during conflict analysis if gcd>1";
+            }
         };
     }
 

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/ConflictMapReduceByPowersOf2.java

@@ -26,6 +26,11 @@ public class ConflictMapReduceByPowersOf2 extends ConflictMap {
                 return ConflictMapReduceByPowersOf2.createConflict(cpb, level,
                         noRemove, skip, postprocess, stats);
             }
+
+            @Override
+            public String toString() {
+                return "Divide by two the constraint during conflict analysis if all coefficients are even";
+            }
         };
     }
 

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/ConflictMapReduceToCard.java

@@ -56,6 +56,11 @@ public class ConflictMapReduceToCard extends ConflictMap {
                 return ConflictMapReduceToCard.createConflict(cpb, level,
                         noRemove, skip, postprocess, stats);
             }
+
+            @Override
+            public String toString() {
+                return "Reduce to cardinality constraint during conflict analysis if necessary";
+            }
         };
     }
 

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/ConflictMapReduceToClause.java

@@ -74,6 +74,11 @@ public final class ConflictMapReduceToClause extends ConflictMap {
                 return ConflictMapReduceToClause.createConflict(cpb, level,
                         noRemove, skip, postprocess, stats);
             }
+
+            @Override
+            public String toString() {
+                return "Reduce to clause during conflict analysis if necessary";
+            }
         };
     }
 

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/NoPostProcess.java

@@ -45,4 +45,9 @@ public class NoPostProcess implements IPostProcess {
     public void postProcess(int dl, ConflictMap conflictMap) {
         // nothing to do
     }
+
+    @Override
+    public String toString() {
+        return "No postprocessing";
+    }
 }
\ No newline at end of file

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/PostProcessDivideBy2.java

@@ -51,4 +51,9 @@ public class PostProcessDivideBy2 implements IPostProcess {
 
     }
 
+    @Override
+    public String toString() {
+        return "Performs a post-processing after conflict analysis in order to divide by 2 as much as possible coefficients of learned constraints";
+    }
+
 }
\ No newline at end of file

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/PostProcessDivideByGCD.java

@@ -20,4 +20,8 @@ public class PostProcessDivideByGCD implements IPostProcess {
 
     }
 
+    @Override
+    public String toString() {
+        return "Performs a post-processing after conflict analysis in order to divide by gcd over coefficients of learned constraints";
+    }
 }

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/PostProcessToCard.java

@@ -191,4 +191,8 @@ public class PostProcessToCard implements IPostProcess {
         return maxLit;
     }
 
+    @Override
+    public String toString() {
+        return "Performs a post-processing after conflict analysis in order to learn only cardinality constraints (Dixon's procedure)";
+    }
 }
\ No newline at end of file

org.sat4j.pb/src/main/java/org/sat4j/pb/constraints/pb/PostProcessToClause.java

@@ -133,4 +133,8 @@ public class PostProcessToClause implements IPostProcess {
         return conflictMap.assertiveLiteral;
     }
 
+    @Override
+    public String toString() {
+        return "Performs a post-processing after conflict analysis in order to learn clauses";
+    }
 }
\ No newline at end of file

org.sat4j.pb/src/main/java/org/sat4j/pb/core/PBSolverCP.java

@@ -206,13 +206,14 @@ public class PBSolverCP extends PBSolver {
     @Override
     public String toString(String prefix) {
         return prefix + "Cutting planes based inference ("
-                + this.getClass().getName() + ")"
+                + this.getClass().getName() + ")\n"
                 + (this.noRemove ? ""
-                        : " - removing satisfied literals at a higher level before CP -")
-                + (this.skipAllow
-                        ? " - skipping as much as possible cutting planes during analysis conflict- Jan Elffers's algorithm -"
+                        : prefix + " - removing satisfied literals at a higher level before CP \n")
+                + (this.skipAllow ? prefix
+                        + " - skipping as much as possible cutting planes during analysis conflict- Jan Elffers's algorithm \n"
                         : "")
-                + "\n" + super.toString(prefix);
+                + prefix + postprocess + "\n" + prefix + conflictFactory + "\n"
+                + super.toString(prefix);
     }
 
     private final IVec<String> conflictVariables = new Vec<String>();