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-rw-r--r--src/sat/bsat/satSolver2.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/sat/bsat/satSolver2.c b/src/sat/bsat/satSolver2.c
index 0e456f46..631051e0 100644
--- a/src/sat/bsat/satSolver2.c
+++ b/src/sat/bsat/satSolver2.c
@@ -1573,6 +1573,9 @@ void sat_solver2_rollback( sat_solver2* s )
// reset watcher lists
for ( i = 2*s->iVarPivot; i < 2*s->size; i++ )
s->wlists[i].size = 0;
+ // clear variable activity
+ for ( i = s->iVarPivot; i < s->size; i++ )
+ s->activity[i] = (1<<10);
// initialize other vars
s->size = s->iVarPivot;