fix: SSTORE gas refund (#885)

crates/evm/src/gas.cairo

@@ -32,7 +32,7 @@ const CODEDEPOSIT: u128 = 200;
 
 const SSTORE_SET: u128 = 20000;
 const SSTORE_RESET: u128 = 5000;
-const REFUND_SSTORE_CLEARS: u128 = 15000;
+const REFUND_SSTORE_CLEARS: u128 = 4800;
 
 const TRANSACTION_ZERO_DATA: u128 = 4;
 const TRANSACTION_NON_ZERO_DATA_INIT: u128 = 16;

scripts/gas_debug_call.py

@@ -0,0 +1,43 @@
+import re
+
+
+def process_logs(logs):
+    current_address = None
+    previous_gas = None
+    accumulated_gas = 0
+
+    pattern = re.compile(r"Address (\d+), gas left in call (\d+)")
+
+    for line in logs.split("\n"):
+        match = pattern.search(line)
+        if match:
+            address, gas_left = match.groups()
+            gas_left = int(gas_left)
+
+            if address != current_address:
+                if current_address is not None:
+                    print(
+                        f"Total gas used for {hex(int(current_address))}: {accumulated_gas}"
+                    )
+                current_address = address
+                previous_gas = gas_left
+                accumulated_gas = 0
+            else:
+                gas_used = previous_gas - gas_left
+                accumulated_gas += gas_used
+                print(
+                    f"Gas used in step for {hex(int(current_address))}: {gas_used} (Total: {accumulated_gas})"
+                )
+                previous_gas = gas_left
+
+    if current_address is not None:
+        print(f"Total gas used for {hex(int(current_address))}: {accumulated_gas}")
+
+
+# Example usage
+logs = """
+Address 1169201309864722334562947866173026415724746034380, gas left in call 79978528
+Address 1169201309864722334562947866173026415724746034380, gas left in call 79978525
+"""
+
+process_logs(logs)