Update test_semilinear1d.py

Author: milzj

tests/algorithms/test_semilinear1d.py

@@ -233,7 +233,8 @@ def test_convergence_rate():
 
     # Convergence dual gap
     rates = convergence_rates(dual_gaps, [1.0/n for n in ns])
-    assert dual_gaps < 0
+    print(dual_gaps)
+    assert np.min(dual_gaps) < 0
 
     assert np.isclose(np.median(rates), 2.0, atol=0.2)