[AutoTVM] Fix a bug in simulated annealing (#3413)
[AutoTVM] Fix a bug in simulated annealing (#3413)

* [AutoTVM] Fix a bug in simulated annealing

* Update sa_model_optimizer.py

tqchen/tvm,Laurawly/tvm-1,tqchen/tvm,Laurawly/tvm-1,dmlc/tvm,Huyuwei/tvm,dmlc/tvm,sxjscience/tvm,Huyuwei/tvm,Huyuwei/tvm,Laurawly/tvm-1,dmlc/tvm,tqchen/tvm,Laurawly/tvm-1,Laurawly/tvm-1,Huyuwei/tvm,sxjscience/tvm,Huyuwei/tvm,tqchen/tvm,Huyuwei/tvm,Huyuwei/tvm,tqchen/tvm,Huyuwei/tvm,dmlc/tvm,sxjscience/tvm,Laurawly/tvm-1,sxjscience/tvm,Laurawly/tvm-1,Huyuwei/tvm,Laurawly/tvm-1,sxjscience/tvm,tqchen/tvm,sxjscience/tvm,tqchen/tvm,sxjscience/tvm,dmlc/tvm,Laurawly/tvm-1,tqchen/tvm,dmlc/tvm,dmlc/tvm,sxjscience/tvm,tqchen/tvm,dmlc/tvm,dmlc/tvm,sxjscience/tvm,tqchen/tvm,Laurawly/tvm-1