diff --git a/nac3standalone/demo/interpret_demo.py b/nac3standalone/demo/interpret_demo.py
index 8784ce53..fa91ed3c 100755
--- a/nac3standalone/demo/interpret_demo.py
+++ b/nac3standalone/demo/interpret_demo.py
@@ -67,7 +67,7 @@ def _bool(x):
 
 def _float(x):
     if isinstance(x, np.ndarray):
-        return np.float_(x)
+        return np.float64(x)
     else:
         return float(x)
 
@@ -111,6 +111,9 @@ def patch(module):
     def output_strln(x):
         print(x, end='')
 
+    def output_int32_list(x):
+        print([int(e) for e in x])
+
     def dbg_stack_address(_):
         return 0
 
@@ -126,11 +129,12 @@ def patch(module):
             return output_float
         elif name == "output_str":
             return output_strln
+        elif name == "output_int32_list":
+            return output_int32_list
         elif name in {
             "output_bool",
             "output_int32",
             "output_int64",
-            "output_int32_list",
             "output_uint32",
             "output_uint64",
             "output_strln",
diff --git a/nac3standalone/demo/src/numeric_primitives.py b/nac3standalone/demo/src/numeric_primitives.py
index 77a641f8..2c08c16d 100644
--- a/nac3standalone/demo/src/numeric_primitives.py
+++ b/nac3standalone/demo/src/numeric_primitives.py
@@ -29,10 +29,10 @@ def u32_max() -> uint32:
     return ~uint32(0)
 
 def i32_min() -> int32:
-    return int32(1 << 31)
+    return int32(-(1 << 31))
 
 def i32_max() -> int32:
-    return int32(~(1 << 31))
+    return int32((1 << 31)-1)
 
 def u64_min() -> uint64:
     return uint64(0)
@@ -63,8 +63,9 @@ def test_conv_from_i32():
         i32_max()
     ]:
         output_int64(int64(x))
-        output_uint32(uint32(x))
-        output_uint64(uint64(x))
+        if x >= 0:
+            output_uint32(uint32(x))
+            output_uint64(uint64(x))
         output_float64(float(x))
 
 def test_conv_from_u32():
@@ -108,7 +109,6 @@ def test_conv_from_u64():
 
 def test_f64toi32():
     for x in [
-        float(i32_min()) - 1.0,
         float(i32_min()),
         float(i32_min()) + 1.0,
         -1.5,
@@ -117,7 +117,6 @@ def test_f64toi32():
         1.5,
         float(i32_max()) - 1.0,
         float(i32_max()),
-        float(i32_max()) + 1.0
     ]:
         output_int32(int32(x))
 
@@ -138,24 +137,17 @@ def test_f64toi64():
 
 def test_f64tou32():
     for x in [
-        -1.5,
-        float(u32_min()) - 1.0,
-        -0.5,
         float(u32_min()),
         0.5,
         float(u32_min()) + 1.0,
         1.5,
         float(u32_max()) - 1.0,
         float(u32_max()),
-        float(u32_max()) + 1.0
     ]:
         output_uint32(uint32(x))
 
 def test_f64tou64():
     for x in [
-        -1.5,
-        float(u64_min()) - 1.0,
-        -0.5,
         float(u64_min()),
         0.5,
         float(u64_min()) + 1.0,
@@ -181,4 +173,4 @@ def run() -> int32:
     test_f64tou32()
     test_f64tou64()
 
-    return 0
\ No newline at end of file
+    return 0