1for (int c0 = 1; c0 <= 10; c0 += 1) {
2 for (int c1 = 1; c1 <= c0; c1 += 1)
3 S1(c0, c1);
4 for (int c1 = 11; c1 <= M; c1 += 1)
5 S2(c0, c1);
6}
7

source code of polly/lib/External/isl/test_inputs/codegen/cloog/donotsimp.c