SMPS files that are not read by SCIP 6.0

Question

I have a set of SMPS files that are read by Coin-SMI's SMPS reader, but not by SCIP 6.0's. Actually, SCIP 6.0 shows ''Segmentation fault (core dumped)'' when it tries to read .sto file.

Could you take a quick look at it please to see which part is wrong?

Thank you in advance.

SSLP_3_3_3.cor

NAME          SSLP_3_3_3
ROWS
 N  OBJ
 L  CON1
 L  CON2
 L  CON3
 L  CON4
 E  CON5
 E  CON6
 E  CON7
COLUMNS
    MARKER    'MARKER'                'INTORG'
    x[1]      OBJ       69.000000     CON1      1.000000    
    x[1]      CON2      -66.000000  
    x[2]      OBJ       42.000000     CON1      1.000000    
    x[2]      CON3      -66.000000  
    x[3]      OBJ       44.000000     CON1      1.000000    
    x[3]      CON4      -66.000000  
    y[1,1]    OBJ       -21.000000    CON2      21.000000   
    y[1,1]    CON5      1.000000    
    y[1,2]    OBJ       -18.000000    CON3      18.000000   
    y[1,2]    CON5      1.000000    
    y[1,3]    OBJ       -11.000000    CON4      11.000000   
    y[1,3]    CON5      1.000000    
    y[2,1]    OBJ       -21.000000    CON2      21.000000   
    y[2,1]    CON6      1.000000    
    y[2,2]    OBJ       -19.000000    CON3      19.000000   
    y[2,2]    CON6      1.000000    
    y[2,3]    OBJ       -4.000000     CON4      4.000000    
    y[2,3]    CON6      1.000000    
    y[3,1]    OBJ       -6.000000     CON2      6.000000    
    y[3,1]    CON7      1.000000    
    y[3,2]    OBJ       -24.000000    CON3      24.000000   
    y[3,2]    CON7      1.000000    
    y[3,3]    OBJ       -8.000000     CON4      8.000000    
    y[3,3]    CON7      1.000000    
    MARKER    'MARKER'                 'INTEND'
    y0[1]     OBJ       1000.000000   CON2      -1.000000   
    y0[2]     OBJ       1000.000000   CON3      -1.000000   
    y0[3]     OBJ       1000.000000   CON4      -1.000000   
RHS
    rhs       CON1      3.000000      CON2      -0.000000   
    rhs       CON3      -0.000000     CON4      -0.000000   
    rhs       CON5      1.000000      CON6      1.000000    
    rhs       CON7      1.000000    
BOUNDS
 BV BOUND     x[1]    
 BV BOUND     x[2]    
 BV BOUND     x[3]    
 BV BOUND     y[1,1]  
 BV BOUND     y[1,2]  
 BV BOUND     y[1,3]  
 BV BOUND     y[2,1]  
 BV BOUND     y[2,2]  
 BV BOUND     y[2,3]  
 BV BOUND     y[3,1]  
 BV BOUND     y[3,2]  
 BV BOUND     y[3,3]  
ENDATA

SSLP_3_3_3.sto

STOCH         SSLP_3_3_3
SCENARIOS     DISCRETE
 SC SCEN1     'ROOT'    0.333333  PERIOD2
    rhs       CON5      -0.000000   
    rhs       CON6      -0.000000   
    rhs       CON7      -0.000000   
 SC SCEN2     'ROOT'    0.333333  PERIOD2
    rhs       CON6      -0.000000   
 SC SCEN3     'ROOT'    0.333333  PERIOD2
    rhs       CON7      -0.000000   
ENDATA

SSLP_3_3_3.tim

TIME          SSLP_3_3_3
PERIODS       IMPLICIT
    x[1]      CON1      PERIOD1
    y[1,1]    CON2      PERIOD2
ENDATA

score 0 · Accepted Answer · answered Jul 24 '18 at 07:13

0

SCIP expects rhs to be written upper case, I don't know what the format defines exactly, but this is actually in line with how sections in mps work. We might change this in the future, but until then, just write RHS and everything should work.

answered Jul 24 '18 at 07:13

Gerald

696
3
7

As you said, SCIP reads it well after I changed 'rhs' to 'RHS'. I think this is a minor bug since as far as I know MPS format (for .cor file) does not require specific format on the right hand side column identifier as long as the section identifier 'RHS' presents well. Thanks, Gerald! – Yongkyu Cho Jul 24 '18 at 16:48

SMPS files that are not read by SCIP 6.0

1 Answers1