diff -r f560147710fb -r d0fa16751d14 src/HOL/Decision_Procs/MIR.thy
--- a/src/HOL/Decision_Procs/MIR.thy Fri Aug 05 12:27:51 2016 +0200
+++ b/src/HOL/Decision_Procs/MIR.thy Fri Aug 05 15:44:53 2016 +0200
@@ -1526,7 +1526,7 @@
also have "\ = real_of_int \real_of_int ?nt * real_of_int x + ?I x ?at\" by simp
also have "\ = real_of_int \?I x ?at + real_of_int (?nt * x)\" by (simp add: ac_simps)
also have "\ = real_of_int (\?I x ?at\ + (?nt * x))"
- using floor_add_of_int[of "?I x ?at" "?nt * x"] by simp
+ by (simp add: of_int_mult[symmetric] del: of_int_mult)
also have "\ = real_of_int (?nt)*(real_of_int x) + real_of_int \?I x ?at\" by (simp add: ac_simps)
finally have "?I x (Floor t) = ?I x (CN 0 n a)" using th by simp
with na show ?case by simp