test2.plot

reset
fontsize = 12
set term pdf
set style fill solid 1.00 border 0
set style histogram errorbars gap 2 lw 1
set style data histogram
set xtics rotate by -45
set grid ytics
set xlabel "Benchmarks"
set ylabel "Relative execution time vs. reference implementation"
set yrange [0:*]
set datafile separator ";"
plot 'file.txt' using 2:3:xtic(1) ti "No Strategies" linecolor rgb "#FF0000", \
'' using 4:5 ti "Strategies" lt 1 lc rgb "#00FF00", \
'' using 6:7 ti "Cog" lt 1 lc rgb "#0000FF"