foreach my $str ($line)
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$line is a single thing (scalar), you need to split it into lines manually.

I'd create a hash of hashes keyed by the counted string, each inner hash containing the whole block to print and the count:

    while (my $block = <$fh>) {
        chomp $block;
        my @lines = split /\n/, $block;
        unless ($seen{ $lines[1] }{count}++) {
            $seen{ $lines[1] }{block} = $block;
        }
    }

    for my $str (sort keys %seen) {
        printf {$fa} "%-s %s", @{ $seen{$str} }{qw{ block count }};
        print  {$fa} ":".$input_file."\n";
    }
}
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($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,
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