Removes old proof code (#4964)

This deletes much of the old proof code. Basically everything but the minimal necessary infra-structure for producing unsat cores. That includes dependency tracking in preprocessing, the prop engine proof and the unsat core computation code in the old proof manager. These should also go once we fully integrate into master the new proof infrastructure.

It also cleans interfaces that were using old-proof-code-specific constructs (such as LemmaProofRecipe). When possible or when it made sense standalone local proof production code was kept, but deactivated (such is in the equality engine and in the arithmetic solver).

1 files changed, 0 insertions, 126 deletions

diff --git a/src/proof/proof_utils.cpp b/src/proof/proof_utils.cpp
deleted file mode 100644
index cad56db6a..000000000
--- a/src/proof/proof_utils.cpp
+++ /dev/null
@@ -1,126 +0,0 @@
-/*********************                                                        */
-/*! \file proof_utils.cpp
- ** \verbatim
- ** Top contributors (to current version):
- **   Liana Hadarean, Andrew Reynolds, Guy Katz
- ** This file is part of the CVC4 project.
- ** Copyright (c) 2009-2020 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
- **
- ** [[ Add lengthier description here ]]
-
- ** \todo document this file
-
-**/
-
-#include "proof/proof_utils.h"
-#include "theory/theory.h"
-
-namespace CVC4 {
-namespace utils {
-
-std::string toLFSCKind(Kind kind) {
-  switch(kind) {
-    // core kinds
-  case kind::OR : return "or";
-  case kind::AND: return "and";
-  case kind::XOR: return "xor";
-  case kind::EQUAL: return "=";
-  case kind::IMPLIES: return "impl";
-  case kind::NOT: return "not";
-
-    // bit-vector kinds
-  case kind::BITVECTOR_AND :
-    return "bvand";
-  case kind::BITVECTOR_OR :
-    return "bvor";
-  case kind::BITVECTOR_XOR :
-    return "bvxor";
-  case kind::BITVECTOR_NAND :
-    return "bvnand";
-  case kind::BITVECTOR_NOR :
-    return "bvnor";
-  case kind::BITVECTOR_XNOR :
-    return "bvxnor";
-  case kind::BITVECTOR_COMP :
-    return "bvcomp";
-  case kind::BITVECTOR_MULT :
-    return "bvmul";
-  case kind::BITVECTOR_PLUS :
-    return "bvadd";
-  case kind::BITVECTOR_SUB :
-    return "bvsub";
-  case kind::BITVECTOR_UDIV :
-  case kind::BITVECTOR_UDIV_TOTAL :
-    return "bvudiv";
-  case kind::BITVECTOR_UREM :
-  case kind::BITVECTOR_UREM_TOTAL :
-    return "bvurem";
-  case kind::BITVECTOR_SDIV :
-    return "bvsdiv";
-  case kind::BITVECTOR_SREM :
-    return "bvsrem";
-  case kind::BITVECTOR_SMOD :
-    return "bvsmod";
-  case kind::BITVECTOR_SHL :
-    return "bvshl";
-  case kind::BITVECTOR_LSHR :
-    return "bvlshr";
-  case kind::BITVECTOR_ASHR :
-    return "bvashr";
-  case kind::BITVECTOR_CONCAT :
-    return "concat";
-  case kind::BITVECTOR_NEG :
-    return "bvneg";
-  case kind::BITVECTOR_NOT :
-    return "bvnot";
-  case kind::BITVECTOR_ROTATE_LEFT :
-    return "rotate_left";
-  case kind::BITVECTOR_ROTATE_RIGHT :
-    return "rotate_right";
-  case kind::BITVECTOR_ULT :
-    return "bvult";
-  case kind::BITVECTOR_ULE :
-    return "bvule";
-  case kind::BITVECTOR_UGT :
-    return "bvugt";
-  case kind::BITVECTOR_UGE :
-    return "bvuge";
-  case kind::BITVECTOR_SLT :
-    return "bvslt";
-  case kind::BITVECTOR_SLE :
-    return "bvsle";
-  case kind::BITVECTOR_SGT :
-    return "bvsgt";
-  case kind::BITVECTOR_SGE :
-    return "bvsge";
-  case kind::BITVECTOR_EXTRACT :
-    return "extract";
-  case kind::BITVECTOR_REPEAT :
-    return "repeat";
-  case kind::BITVECTOR_ZERO_EXTEND :
-    return "zero_extend";
-  case kind::BITVECTOR_SIGN_EXTEND :
-    return "sign_extend";
-  default:
-    Unreachable();
-  }
-}
-
-std::string toLFSCKindTerm(Expr node) {
-  Kind k = node.getKind();
-  if( k==kind::EQUAL ){
-    if( node[0].getType().isBoolean() ){
-      return "iff";
-    }else{
-      return "=";
-    }
-  }else{
-    return toLFSCKind( k );
-  }
-}
-
-} /* namespace CVC4::utils */
-} /* namespace CVC4 */