/usr/share/coin/Data/Sample/block_milp.dec is in coinor-libcoinutils-dev 2.10.14+repack1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | NBLOCKS
4
BLOCK 1
C_5.0_1.0
C_6.0_1.0
C_7.0_1.0
BLOCK 2
C_8.0_2.0
C_9.0_2.0
C_10.0_2.0
C_11.0_2.0
C_12.0_2.0
BLOCK 3
C_13.0_3.0
C_14.0_3.0
C_15.0_3.0
C_16.0_3.0
BLOCK 4
C_17.0_4.0
C_18.0_4.0
C_19.0_4.0
C_20.0_4.0
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