[Eva] Reverts a fix of a precision bug on -eva-partition-history.

The fix is correct, but it significantly changes the behavior of the history
partitioning on some case studies.
Keep it for later, in order to fully understand the consequences.

src/plugins/value/partitioning/trace_partitioning.ml

@@ -240,7 +240,7 @@ struct
     (* Get every source flow *)
     let sources_states =
       (* Is there more than one non-empty incomming flow ? *)
-      match List.filter (fun (_b,f) -> not (Flow.is_empty f)) sources with
+      match sources with
       | [(_,flow)] -> [flow]
       | sources ->
         (* Several branches -> partition according to the incoming branch *)

tests/value/oracle/partitioning-annots.2.res.oracle

@@ -11,6 +11,9 @@
 [eva] tests/value/partitioning-annots.c:127: 
   function Frama_C_interval: precondition 'order' got status valid.
 [eva] Done for function Frama_C_interval
+[eva] computing for function Frama_C_interval <- test_loop_split.
+  Called from tests/value/partitioning-annots.c:127.
+[eva] Done for function Frama_C_interval
 [eva] tests/value/partitioning-annots.c:125: starting to merge loop iterations
 [eva] computing for function Frama_C_interval <- test_loop_split.
   Called from tests/value/partitioning-annots.c:127.

tests/value/oracle/partitioning-interproc.0.res.oracle

@@ -12,9 +12,9 @@
 [eva] Done for function Frama_C_nondet
 [eva] Recording results for cassign
 [eva] Done for function cassign
+[eva:alarm] tests/value/partitioning-interproc.c:25: Warning: 
+  accessing uninitialized left-value. assert \initialized(&x);
 [eva] tests/value/partitioning-interproc.c:26: Frama_C_show_each: {1}
-[eva] tests/value/partitioning-interproc.c:30: 
-  Reusing old results for call to cassign
 [eva] computing for function cassign <- cassign_test.
   Called from tests/value/partitioning-interproc.c:30.
 [eva] computing for function Frama_C_nondet <- cassign <- cassign_test.
@@ -22,6 +22,15 @@
 [eva] Done for function Frama_C_nondet
 [eva] Recording results for cassign
 [eva] Done for function cassign
+[eva] computing for function cassign <- cassign_test.
+  Called from tests/value/partitioning-interproc.c:30.
+[eva] computing for function Frama_C_nondet <- cassign <- cassign_test.
+  Called from tests/value/partitioning-interproc.c:11.
+[eva] Done for function Frama_C_nondet
+[eva] Recording results for cassign
+[eva] Done for function cassign
+[eva:alarm] tests/value/partitioning-interproc.c:31: Warning: 
+  accessing uninitialized left-value. assert \initialized(&x);
 [eva] tests/value/partitioning-interproc.c:32: Frama_C_show_each: {1}
 [eva] Recording results for cassign_test
 [eva] done for function cassign_test

tests/value/oracle/partitioning-interproc.1.res.oracle

@@ -14,7 +14,7 @@
 [eva:final-states] Values at end of function fabs:
   __retres ∈ [-0. .. 1.79769313486e+308]
 [eva:final-states] Values at end of function fabs_test:
-  x ∈ [-1. .. 1.]
+  x ∈ [-1.79769313486e+308 .. 1.79769313486e+308]
 [from] Computing for function fabs
 [from] Done for function fabs
 [from] Computing for function fabs_test