Do not import cdll and load libc more than once during benchmark execution.
Do not import cdll and load libc more than once during benchmark execution.

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