use native uint64 big int check

op-challenger/game/fault/trace/cannon/provider.go

@@ -5,8 +5,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"math"
-	"math/big"
 	"os"
 	"path/filepath"
 
@@ -91,7 +89,7 @@ func (p *CannonTraceProvider) SetMaxDepth(gameDepth uint64) {
 
 func (p *CannonTraceProvider) Get(ctx context.Context, pos types.Position) (common.Hash, error) {
 	traceIndex := pos.TraceIndex(int(p.gameDepth))
-	if traceIndex.Cmp(new(big.Int).SetUint64(math.MaxUint64)) > 0 {
+	if !traceIndex.IsUint64() {
 		return common.Hash{}, errors.New("trace index out of bounds")
 	}
 	proof, err := p.loadProof(ctx, traceIndex.Uint64())
@@ -108,7 +106,7 @@ func (p *CannonTraceProvider) Get(ctx context.Context, pos types.Position) (comm
 
 func (p *CannonTraceProvider) GetStepData(ctx context.Context, pos types.Position) ([]byte, []byte, *types.PreimageOracleData, error) {
 	traceIndex := pos.TraceIndex(int(p.gameDepth))
-	if traceIndex.Cmp(new(big.Int).SetUint64(math.MaxUint64)) > 0 {
+	if !traceIndex.IsUint64() {
 		return nil, nil, nil, errors.New("trace index out of bounds")
 	}
 	proof, err := p.loadProof(ctx, traceIndex.Uint64())

op-challenger/game/fault/trace/outputs/provider.go

@@ -3,8 +3,6 @@ package outputs
 import (
 	"context"
 	"fmt"
-	"math"
-	"math/big"
 
 	"github.com/ethereum-optimism/optimism/op-challenger/game/fault/types"
 	"github.com/ethereum-optimism/optimism/op-service/client"
@@ -55,7 +53,7 @@ func NewTraceProviderFromInputs(logger log.Logger, rollupClient OutputRollupClie
 
 func (o *OutputTraceProvider) Get(ctx context.Context, pos types.Position) (common.Hash, error) {
 	traceIndex := pos.TraceIndex(int(o.gameDepth))
-	if traceIndex.Cmp(new(big.Int).SetUint64(math.MaxUint64)) > 0 {
+	if !traceIndex.IsUint64() {
 		return common.Hash{}, fmt.Errorf("trace index %v is greater than max uint64", traceIndex)
 	}
 	outputBlock := traceIndex.Uint64() + o.prestateBlock + 1