added SeaHorn version and fixed options
added SeaHorn version and fixed options

martin-neuhaeusser/benchexec,michkot/benchexec,sosy-lab/benchexec,martin-neuhaeusser/benchexec,ultimate-pa/benchexec,ultimate-pa/benchexec,sosy-lab/benchexec,IljaZakharov/benchexec,IljaZakharov/benchexec,dbeyer/benchexec,IljaZakharov/benchexec,ultimate-pa/benchexec,martin-neuhaeusser/benchexec,sosy-lab/benchexec,dbeyer/benchexec,michkot/benchexec,ultimate-pa/benchexec,michkot/benchexec,sosy-lab/benchexec,dbeyer/benchexec,ultimate-pa/benchexec,sosy-lab/benchexec,dbeyer/benchexec,sosy-lab/benchexec,IljaZakharov/benchexec,martin-neuhaeusser/benchexec,ultimate-pa/benchexec