[pulse] also compare path conditions when comparing states

Summary:
States would be considered equal when they describe the same heap shape
even though their path conditions were different. Not good.

Reviewed By: skcho

Differential Revision: D26022135

fbshipit-source-id: 510913cde

infer/src/pulse/PulseAbductiveDomain.ml

@@ -122,6 +122,7 @@ let leq ~lhs ~rhs =
   phys_equal lhs rhs
   || SkippedCalls.leq ~lhs:lhs.skipped_calls ~rhs:rhs.skipped_calls
      && ((not Config.pulse_isl) || equal_isl_status lhs.isl_status rhs.isl_status)
+     && PathCondition.equal lhs.path_condition rhs.path_condition
      &&
      match
        BaseDomain.isograph_map BaseDomain.empty_mapping