From 0e3c1366db81509f64f54973e933f0135bcf8ca7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kevin=20L=C3=A4ufer?= <laeufer@cs.berkeley.edu>
Date: Thu, 16 Nov 2023 11:57:22 -0500
Subject: [PATCH] do not save a replay file

---
 examples/bmc.rs | 1 +
 src/mc/smt.rs   | 9 ++++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/examples/bmc.rs b/examples/bmc.rs
index 948f9d6..96eafbb 100644
--- a/examples/bmc.rs
+++ b/examples/bmc.rs
@@ -32,6 +32,7 @@ fn main() {
     let checker_opts = mc::SmtModelCheckerOptions {
         check_constraints: true,
         check_bad_states_individually: true,
+        save_smt_replay: false,
     };
     let solver = mc::BITWUZLA_CMD;
     if args.verbose {
diff --git a/src/mc/smt.rs b/src/mc/smt.rs
index 80fd594..e817d10 100644
--- a/src/mc/smt.rs
+++ b/src/mc/smt.rs
@@ -29,6 +29,8 @@ pub struct SmtModelCheckerOptions {
     pub check_constraints: bool,
     /// Perform one SMT solver check per assertion instead of combining them into a single check.
     pub check_bad_states_individually: bool,
+    /// If true, the communication with the SMT solver will be logged into a `replay.smt` file.
+    pub save_smt_replay: bool,
 }
 
 pub struct SmtModelChecker {
@@ -50,9 +52,14 @@ impl SmtModelChecker {
         k_max: u64,
     ) -> Result<ModelCheckResult> {
         assert!(k_max > 0 && k_max <= 2000, "unreasonable k_max={}", k_max);
+        let replay_file = if self.opts.save_smt_replay {
+            Some(std::fs::File::create("replay.smt")?)
+        } else {
+            None
+        };
         let mut smt_ctx = easy_smt::ContextBuilder::new()
             .solver(self.solver.name, self.solver.args)
-            .replay_file(Some(std::fs::File::create("replay.smt")?))
+            .replay_file(replay_file)
             .build()?;
 
         // z3 only supports the non-standard as-const array syntax when the logic is set to ALL