bindings

op-bindings/bindings/alphabetvm2.go

@@ -31,7 +31,7 @@ var (
 // AlphabetVM2MetaData contains all meta data concerning the AlphabetVM2 contract.
 var AlphabetVM2MetaData = &bind.MetaData{
 	ABI: "[{\"inputs\":[{\"internalType\":\"Claim\",\"name\":\"_absolutePrestate\",\"type\":\"bytes32\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"inputs\":[],\"name\":\"oracle\",\"outputs\":[{\"internalType\":\"contractIPreimageOracle\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes\",\"name\":\"_stateData\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"\",\"type\":\"bytes\"},{\"internalType\":\"bytes32\",\"name\":\"_localContext\",\"type\":\"bytes32\"}],\"name\":\"step\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"postState_\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]",
-	Bin: "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",
+	Bin: "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",
 }
 
 // AlphabetVM2ABI is the input ABI used to generate the binding from.

op-bindings/bindings/alphabetvm2_more.go

@@ -13,7 +13,7 @@ const AlphabetVM2StorageLayoutJSON = "{\"storage\":[{\"astId\":1000,\"contract\"
 
 var AlphabetVM2StorageLayout = new(solc.StorageLayout)
 
-var AlphabetVM2DeployedBin = "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"
+var AlphabetVM2DeployedBin = "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"
 
 
 func init() {

packages/contracts-bedrock/test/dispute/OutputBisectionGame.t.sol

@@ -654,6 +654,82 @@ contract OutputBisection_1v1_Actors_Test is OutputBisectionGame_Init {
         super.setUp();
     }
 
+    /// @notice Static unit test for a 1v1 output bisection dispute.
+    function test_static_1v1honestRootGenesisAbsolutePrestate_succeeds() public {
+        // The honest l2 outputs are from [1, 16] in this game.
+        uint256[] memory honestL2Outputs = new uint256[](16);
+        for (uint256 i; i < honestL2Outputs.length; i++) {
+            honestL2Outputs[i] = i + 1;
+        }
+        // The honest trace covers all block -> block + 1 transitions, and is 256 bytes long, consisting
+        // of bytes [0, 255].
+        bytes memory honestTrace = new bytes(256);
+        for (uint256 i; i < honestTrace.length; i++) {
+            honestTrace[i] = bytes1(uint8(i));
+        }
+
+        // The dishonest l2 outputs are from [2, 17] in this game.
+        uint256[] memory dishonestL2Outputs = new uint256[](16);
+        for (uint256 i; i < dishonestL2Outputs.length; i++) {
+            dishonestL2Outputs[i] = i + 2;
+        }
+        // The dishonest trace covers all block -> block + 1 transitions, and is 256 bytes long, consisting
+        // of all set bits.
+        bytes memory dishonestTrace = new bytes(256);
+        for (uint256 i; i < dishonestTrace.length; i++) {
+            dishonestTrace[i] = bytes1(0xFF);
+        }
+
+        // Run the actor test
+        _actorTest({
+            _rootClaim: 16,
+            _absolutePrestateData: 0,
+            _honestTrace: honestTrace,
+            _honestL2Outputs: honestL2Outputs,
+            _dishonestTrace: dishonestTrace,
+            _dishonestL2Outputs: dishonestL2Outputs,
+            _expectedStatus: GameStatus.DEFENDER_WINS
+        });
+    }
+
+    /// @notice Static unit test for a 1v1 output bisection dispute.
+    function test_static_1v1dishonestRootGenesisAbsolutePrestate_succeeds() public {
+        // The honest l2 outputs are from [1, 16] in this game.
+        uint256[] memory honestL2Outputs = new uint256[](16);
+        for (uint256 i; i < honestL2Outputs.length; i++) {
+            honestL2Outputs[i] = i + 1;
+        }
+        // The honest trace covers all block -> block + 1 transitions, and is 256 bytes long, consisting
+        // of bytes [0, 255].
+        bytes memory honestTrace = new bytes(256);
+        for (uint256 i; i < honestTrace.length; i++) {
+            honestTrace[i] = bytes1(uint8(i));
+        }
+
+        // The dishonest l2 outputs are from [2, 17] in this game.
+        uint256[] memory dishonestL2Outputs = new uint256[](16);
+        for (uint256 i; i < dishonestL2Outputs.length; i++) {
+            dishonestL2Outputs[i] = i + 2;
+        }
+        // The dishonest trace covers all block -> block + 1 transitions, and is 256 bytes long, consisting
+        // of all set bits.
+        bytes memory dishonestTrace = new bytes(256);
+        for (uint256 i; i < dishonestTrace.length; i++) {
+            dishonestTrace[i] = bytes1(0xFF);
+        }
+
+        // Run the actor test
+        _actorTest({
+            _rootClaim: 17,
+            _absolutePrestateData: 0,
+            _honestTrace: honestTrace,
+            _honestL2Outputs: honestL2Outputs,
+            _dishonestTrace: dishonestTrace,
+            _dishonestL2Outputs: dishonestL2Outputs,
+            _expectedStatus: GameStatus.CHALLENGER_WINS
+        });
+    }
+
     /// @notice Static unit test for a 1v1 output bisection dispute.
     function test_static_1v1honestRoot_succeeds() public {
         // The honest l2 outputs are from [1, 16] in this game.

packages/contracts-bedrock/test/mocks/AlphabetVM2.sol

@@ -5,6 +5,8 @@ import { IBigStepper, IPreimageOracle } from "src/dispute/interfaces/IBigStepper
 import { PreimageOracle, PreimageKeyLib } from "src/cannon/PreimageOracle.sol";
 import "src/libraries/DisputeTypes.sol";
 
+import { console2 as console } from "forge-std/console2.sol";
+
 /// @title AlphabetVM2
 /// @dev A mock VM for the purpose of testing the dispute game infrastructure. Note that this only works
 ///      for games with an execution trace subgame max depth of 3 (8 instructions per subgame).
@@ -33,16 +35,18 @@ contract AlphabetVM2 is IBigStepper {
             // If the state data is empty, then the absolute prestate is the claim.
             (bytes32 dat,) = oracle.readPreimage(PreimageKeyLib.localizeIdent(4, _localContext), 0);
             uint256 startingL2BlockNumber = (uint256(dat) >> 128) & 0xFFFFFFFF;
-            traceIndex = (2 ** 4) * startingL2BlockNumber;
-            claim = traceIndex == 0 ? 0 : traceIndex - 1;
+            traceIndex = startingL2BlockNumber << 4;
+            (uint256 absolutePrestateClaim) = abi.decode(_stateData, (uint256));
+            claim = absolutePrestateClaim + traceIndex;
         } else {
             // Otherwise, decode the state data.
             (traceIndex, claim) = abi.decode(_stateData, (uint256, uint256));
             traceIndex++;
+            claim++;
         }
 
         // STF: n -> n + 1
-        postState_ = keccak256(abi.encode(traceIndex, claim + 1));
+        postState_ = keccak256(abi.encode(traceIndex, claim));
         assembly {
             postState_ := or(and(postState_, not(shl(248, 0xFF))), shl(248, 1))
         }