```
WARN [10-05|09:49:34.934] gasLimit is exceeded
ERROR[10-05|09:49:34.935] RPC method eth_estimateGas crashed: gas pool pushed above uint64
goroutine 8999794 [running]:
github.com/waterfall-foundation/gwat/rpc.(*callback).call.func1()
	github.com/waterfall-foundation/gwat/rpc/service.go:200 +0x89
panic({0x11cfea0, 0x1610390})
	runtime/panic.go:1038 +0x215
github.com/waterfall-foundation/gwat/core.(*GasPool).AddGas(...)
	github.com/waterfall-foundation/gwat/core/gaspool.go:31
github.com/waterfall-foundation/gwat/core.(*StateTransition).refundGas(0xc008bd4c80, 0x82db844866273fb7)
	github.com/waterfall-foundation/gwat/core/state_transition.go:392 +0x196
github.com/waterfall-foundation/gwat/core.(*StateTransition).TransitionDb(0xc008bd4c80)
	github.com/waterfall-foundation/gwat/core/state_transition.go:363 +0x906
github.com/waterfall-foundation/gwat/core.ApplyMessage(0x1668590, 0xc00b269760, {0x1668590, 0xc012ac6ea0}, 0xc012ac6e10)
	github.com/waterfall-foundation/gwat/core/state_transition.go:186 +0x2a
github.com/waterfall-foundation/gwat/internal/ethapi.DoCall({0x164c6f8, 0xc00b918200}, {0x1681bc8, 0xc000127170}, {0xc012db8f90, 0x0, 0xc005c94ab8, 0xc00bdfb8a0, 0x0, 0x0, ...}, ...)
	github.com/waterfall-foundation/gwat/internal/ethapi/api.go:904 +0x56a
github.com/waterfall-foundation/gwat/internal/ethapi.DoEstimateGas.func1(0x913f)
	github.com/waterfall-foundation/gwat/internal/ethapi/api.go:1053 +0x145
github.com/waterfall-foundation/gwat/internal/ethapi.DoEstimateGas({0x164c6f8, 0xc00b918200}, {0x1681bc8, 0xc000127170}, {0xc012db8f90, 0x0, 0xc005c94ab8, 0xc00bdfb8a0, 0x0, 0x0, ...}, ...)
	github.com/waterfall-foundation/gwat/internal/ethapi/api.go:1065 +0x9e8
github.com/waterfall-foundation/gwat/internal/ethapi.(*PublicBlockChainAPI).EstimateGas(0xc000129360, {0x164c6f8, 0xc00b918200}, {0xc012db8f90, 0x0, 0x0, 0xc00bdfb8a0, 0x0, 0x0, 0xc00bdfb880, ...}, ...)
	github.com/waterfall-foundation/gwat/internal/ethapi/api.go:1106 +0x16e
reflect.Value.call({0xc00015f680, 0xc00096c1c8, 0x7f749ff2c5b8}, {0x13e329f, 0x4}, {0xc007c249c0, 0x4, 0xc0089b9a40})
	reflect/value.go:543 +0x814
reflect.Value.Call({0xc00015f680, 0xc00096c1c8, 0x57b0c8}, {0xc007c249c0, 0x4, 0x4})
	reflect/value.go:339 +0xc5
github.com/waterfall-foundation/gwat/rpc.(*callback).call(0xc000972600, {0x164c6f8, 0xc00b918200}, {0xc005c94200, 0xf}, {0xc00a8771d0, 0x2, 0x4df897})
	github.com/waterfall-foundation/gwat/rpc/service.go:206 +0x405
github.com/waterfall-foundation/gwat/rpc.(*handler).runMethod(0xc008989c70, {0x164c6f8, 0xc00b918200}, 0xc019a54f50, 0xc0089b97e0, {0xc00a8771d0, 0x0, 0x203002})
	github.com/waterfall-foundation/gwat/rpc/handler.go:389 +0x45
github.com/waterfall-foundation/gwat/rpc.(*handler).handleCall(0xc00cf05050, 0xc00a877170, 0xc019a54f50)
	github.com/waterfall-foundation/gwat/rpc/handler.go:337 +0x239
github.com/waterfall-foundation/gwat/rpc.(*handler).handleCallMsg(0xc00cf05050, 0xc000100000, 0xc019a54f50)
	github.com/waterfall-foundation/gwat/rpc/handler.go:298 +0xd1
github.com/waterfall-foundation/gwat/rpc.(*handler).handleMsg.func1(0xc00a877170)
	github.com/waterfall-foundation/gwat/rpc/handler.go:139 +0x35
github.com/waterfall-foundation/gwat/rpc.(*handler).startCallProc.func1()
	github.com/waterfall-foundation/gwat/rpc/handler.go:226 +0xc8
created by github.com/waterfall-foundation/gwat/rpc.(*handler).startCallProc
	github.com/waterfall-foundation/gwat/rpc/handler.go:222 +0x92