diff --git a/.travis.yml b/.travis.yml
index 962be26d6..8333e3bf0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -251,12 +251,24 @@ jobs:
       stage: test
       name: "Coverage vlt set 2"
       script: ci/test.sh coverage-vlt2
+    - if: type = cron
+      dist: focal
+      compiler: gcc
+      stage: test
+      name: "Coverage vltmt set 2"
+      script: ci/test.sh coverage-vltmt2
     - if: type = cron
       dist: focal
       compiler: gcc
       stage: test
       name: "Coverage vlt set 3"
       script: ci/test.sh coverage-vlt3
+    - if: type = cron
+      dist: focal
+      compiler: gcc
+      stage: test
+      name: "Coverage vltmt set 3"
+      script: ci/test.sh coverage-vltmt3
 
 notifications:
   email:
diff --git a/ci/test.sh b/ci/test.sh
index 6cb60308a..e5667a527 100755
--- a/ci/test.sh
+++ b/ci/test.sh
@@ -54,11 +54,19 @@ case $1 in
         bash <(curl -s https://codecov.io/bash) -f nodist/obj_dir/coverage/app_total.info 
         ;;
     coverage-vltmt0)
-        nodist/code_coverage --scenarios=--vltmt --hashset=0/2
+        nodist/code_coverage --scenarios=--vltmt --hashset=0/4
         bash <(curl -s https://codecov.io/bash) -f nodist/obj_dir/coverage/app_total.info 
         ;;
     coverage-vltmt1)
-        nodist/code_coverage --scenarios=--vltmt --hashset=1/2
+        nodist/code_coverage --scenarios=--vltmt --hashset=1/4
+        bash <(curl -s https://codecov.io/bash) -f nodist/obj_dir/coverage/app_total.info 
+        ;;
+    coverage-vltmt2)
+        nodist/code_coverage --scenarios=--vltmt --hashset=3/4
+        bash <(curl -s https://codecov.io/bash) -f nodist/obj_dir/coverage/app_total.info 
+        ;;
+    coverage-vltmt3)
+        nodist/code_coverage --scenarios=--vltmt --hashset=4/4
         bash <(curl -s https://codecov.io/bash) -f nodist/obj_dir/coverage/app_total.info 
         ;;
     *)
diff --git a/nodist/code_coverage b/nodist/code_coverage
index d37541775..b7efc0528 100755
--- a/nodist/code_coverage
+++ b/nodist/code_coverage
@@ -190,7 +190,8 @@ sub test {
         foreach my $dir (sort keys %dirs) {
             (my $outname = $dir) =~ s![^a-zA-Z0-9]+!_!g;
             $Fork->schedule(run_on_start => sub {
-                run("cd $cc_dir/info ; lcov -c -d ../../../../$dir --exclude /usr -o app_test_${outname}.info");
+                # .info may be empty, so ignore errors (unfortunately)
+                run("cd $cc_dir/info ; lcov -c -d ../../../../$dir --exclude /usr -o app_test_${outname}.info || true");
                             })->run;
         }
         $Fork->wait_all;