Proof-checking code; fixups of segfaults and missing functionality in proof generation; fix bug 285.

* segfaults/assert-fails in proof-generation fixed, including bug 285
* added --check-proofs to automatically check proofs, like --check-models (but only for UF/SAT at present)
* proof generation now works in portfolio (but *not* --check-proofs, since LFSC code uses globals)
* proofs are *not* yet supported in incremental mode
* added --dump-proofs to dump out proofs, like --dump-models
* run_regression script now runs with --check-proofs where appropriate
* options scripts now support :link-smt for SMT options, like :link for command-line

3 files changed, 14 insertions, 0 deletions

diff --git a/src/printer/ast/ast_printer.cpp b/src/printer/ast/ast_printer.cpp
index 8ab5c121d..72bfa5603 100644
--- a/src/printer/ast/ast_printer.cpp
+++ b/src/printer/ast/ast_printer.cpp
@@ -153,6 +153,7 @@ void AstPrinter::toStream(std::ostream& out, const Command* c,
      tryToStream<GetModelCommand>(out, c) ||
      tryToStream<GetAssignmentCommand>(out, c) ||
      tryToStream<GetAssertionsCommand>(out, c) ||
+     tryToStream<GetProofCommand>(out, c) ||
      tryToStream<SetBenchmarkStatusCommand>(out, c) ||
      tryToStream<SetBenchmarkLogicCommand>(out, c) ||
      tryToStream<SetInfoCommand>(out, c) ||
@@ -307,6 +308,9 @@ static void toStream(std::ostream& out, const GetAssignmentCommand* c) throw() {
 static void toStream(std::ostream& out, const GetAssertionsCommand* c) throw() {
   out << "GetAssertions()";
 }
+static void toStream(std::ostream& out, const GetProofCommand* c) throw() {
+  out << "GetProof()";
+}
 static void toStream(std::ostream& out, const SetBenchmarkStatusCommand* c) throw() {
   out << "SetBenchmarkStatus(" << c->getStatus() << ")";
 }
diff --git a/src/printer/cvc/cvc_printer.cpp b/src/printer/cvc/cvc_printer.cpp
index bd2626ddd..49ded4ecb 100644
--- a/src/printer/cvc/cvc_printer.cpp
+++ b/src/printer/cvc/cvc_printer.cpp
@@ -776,6 +776,7 @@ void CvcPrinter::toStream(std::ostream& out, const Command* c,
      tryToStream<GetModelCommand>(out, c) ||
      tryToStream<GetAssignmentCommand>(out, c) ||
      tryToStream<GetAssertionsCommand>(out, c) ||
+     tryToStream<GetProofCommand>(out, c) ||
      tryToStream<SetBenchmarkStatusCommand>(out, c) ||
      tryToStream<SetBenchmarkLogicCommand>(out, c) ||
      tryToStream<SetInfoCommand>(out, c) ||
@@ -1031,6 +1032,10 @@ static void toStream(std::ostream& out, const GetAssertionsCommand* c) throw() {
   out << "WHERE;";
 }
 
+static void toStream(std::ostream& out, const GetProofCommand* c) throw() {
+  out << "DUMP_PROOF;";
+}
+
 static void toStream(std::ostream& out, const SetBenchmarkStatusCommand* c) throw() {
   out << "% (set-info :status " << c->getStatus() << ")";
 }
diff --git a/src/printer/smt2/smt2_printer.cpp b/src/printer/smt2/smt2_printer.cpp
index b743ba70e..c56d87da6 100644
--- a/src/printer/smt2/smt2_printer.cpp
+++ b/src/printer/smt2/smt2_printer.cpp
@@ -577,6 +577,7 @@ void Smt2Printer::toStream(std::ostream& out, const Command* c,
      tryToStream<GetModelCommand>(out, c) ||
      tryToStream<GetAssignmentCommand>(out, c) ||
      tryToStream<GetAssertionsCommand>(out, c) ||
+     tryToStream<GetProofCommand>(out, c) ||
      tryToStream<SetBenchmarkStatusCommand>(out, c) ||
      tryToStream<SetBenchmarkLogicCommand>(out, c) ||
      tryToStream<SetInfoCommand>(out, c) ||
@@ -858,6 +859,10 @@ static void toStream(std::ostream& out, const GetAssertionsCommand* c) throw() {
   out << "(get-assertions)";
 }
 
+static void toStream(std::ostream& out, const GetProofCommand* c) throw() {
+  out << "(get-proof)";
+}
+
 static void toStream(std::ostream& out, const SetBenchmarkStatusCommand* c) throw() {
   out << "(set-info :status " << c->getStatus() << ")";
 }