diff options
Diffstat (limited to 'src/theory/quantifiers/ematching/ho_trigger.cpp')
| -rw-r--r-- | src/theory/quantifiers/ematching/ho_trigger.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/theory/quantifiers/ematching/ho_trigger.cpp b/src/theory/quantifiers/ematching/ho_trigger.cpp index 2fcfa19d9..7598e6fdc 100644 --- a/src/theory/quantifiers/ematching/ho_trigger.cpp +++ b/src/theory/quantifiers/ematching/ho_trigger.cpp @@ -4,7 +4,7 @@ ** Top contributors (to current version): ** Andrew Reynolds ** This file is part of the CVC4 project. - ** Copyright (c) 2009-2018 by the authors listed in the file AUTHORS + ** Copyright (c) 2009-2019 by the authors listed in the file AUTHORS ** in the top-level source directory) and their institutional affiliations. ** All rights reserved. See the file COPYING in the top-level source ** directory for licensing information.\endverbatim @@ -270,6 +270,11 @@ bool HigherOrderTrigger::sendInstantiation(InstMatch& m) // Assert( f==value ); for (unsigned k = 0, size = args.size(); k < size; k++) { + // must now subsitute back, to handle cases like + // (@ x y) matching (@ t (@ t s)) + // where the above substitution would produce (@ x (@ x s)), + // but the argument should be (@ t s). + args[k] = args[k].substitute(var, value); Node val = args[k]; std::map<unsigned, Node>::iterator itf = fixed_vals.find(k); if (itf == fixed_vals.end()) |