anchor.diff:                      %% Run the trace.
                       Command = "rm -rf priv/lager; IMPLEMENTATION_MODULE=" ++ os:getenv("IMPLEMENTATION_MODULE") ++ " SHRINKING=true REPLAY=true PRELOAD_OMISSIONS_FILE=" ++ PreloadOmissionFile ++ " REPLAY_TRACE_FILE=" ++ ReplayTraceFile ++ " TRACE_FILE=" ++ TraceFile ++ " ./rebar3 proper --retry | tee /tmp/partisan.output",
                       io:format("Executing command for iteration ~p:~n", [Iteration]),
  -                    io:format(" ~p~n", [Command]),
  +                    io:format("~p~n", [Command]),
                       Output = os:cmd(Command),
   
                       ClassificationsExplored = ClassificationsExplored0 ++ [Classification],
  
positive.code:                     NewTraces = case length(Difference) > 0 of
                          true ->
                              io:format("=> * Adding trace to list to explore.~n", []),
                              NewTraces0 ++ [{hd(NewTraceLines), Omissions}];
                          false ->
                              NewTraces0
                      end,
  
negative.code:             end
      end,
  
      %% Generate schedules.
      {GenIteration, GenNumPassed, GenNumFailed, GenNumPruned, GenClassificationsExplored, GenAdditionalTraces} = lists:foldl(fun(Omissions, {GenIteration0, GenNumPassed0, GenNumFailed0, GetNumPruned0, GenClassificationsExplored0, GenAdditionalTraces0}) ->
          % io:format("~n", []),
  
          %% Generate a new trace.
  