isl_basic_set_opt: avoid invalid access on error path

[platform/upstream/isl.git] / test_inputs / philippe3vars.pwqp

[N] -> { [i, j, k] -> (((1/2 * i + 1/2 * i^2) + j) + k^3) : i >= 0 and k >= -N + i and k >= -j and j <= i }