[wp] test for fixed non-terminating strategy

src/plugins/wp/tests/wp_tip/oracle_qualif/terminating.res.oracle

+# frama-c -wp [...]
+[kernel] Parsing terminating.i (no preprocessing)
+[wp] Running WP plugin...
+[wp] 1 goal scheduled
+[wp] [Unsuccess] typed_lemma_dummy (Tactics 2) (Qed)
+[wp] Proved goals:    0 / 1
+  Unsuccess:       1
+------------------------------------------------------------
+  Global
+------------------------------------------------------------
+
+Goal Lemma 'dummy':
+Assume { Have: i < 0. }
+Prove: j < 0.
+Prover Alt-Ergo returns Unsuccess
+Prover Script returns Unsuccess
+
+------------------------------------------------------------
+Subgoal 1/1:
+ - Lemma 'dummy'
+ - Filter (Filter)
+ - Filter (Filter)
+Goal Wp.Tactical.typed_lemma_dummy-1 (generated):
+Prove: j < 0.
+
+------------------------------------------------------------
+------------------------------------------------------------
+ Axiomatics                WP     Alt-Ergo  Total   Success
+  Lemma                     -        -        1       0.0%
+------------------------------------------------------------

src/plugins/wp/tests/wp_tip/terminating.i

+/* run.config
+   DONTRUN:
+*/
+
+/* run.config_qualif
+   OPT: -wp-status -wp-prover tip -wp-script dry
+ */
+
+/*@ lemma dummy: \forall integer i,j; i < 0 ==> j < 0; */
+
+/*@
+  strategy FastAltErgo:  \prover("alt-ergo", 1); // run Alt-Ergo for 1 sec.
+  strategy EagerAltErgo: \prover("alt-ergo",10); // run Alt-Ergo for 10 sec.
+
+  strategy FilterProver:
+    FastAltErgo,
+    \tactic("Wp.filter"
+      ,\goal(_)
+      ,\children(EagerAltErgo)
+    ),
+    EagerAltErgo;
+
+  proof FilterProver: dummy;
+*/