CPLEX> read opgave8.lp
Problem 'opgave8.lp' read.
Read time =    0.02 sec.
CPLEX> opt
Tried aggregator 1 time.
MIP Presolve eliminated 9 rows and 0 columns.
MIP Presolve modified 5 coefficients.
Aggregator did 1 substitutions.
Reduced MIP has 8 rows, 7 columns, and 21 nonzeros.
Presolve time =    0.01 sec.
Root relaxation solution time =    0.00 sec.

        Nodes                                         Cuts/
   Node  Left     Objective  IInf  Best Integer     Best Node    ItCnt     Gap

      0     0        3.1311     2                      3.1311        5        
*     0+    0        3.6667     0        3.6667        3.1311        5   14.61%

Integer optimal solution:  Objective =    3.6666666667e+00
Solution time =    0.02 sec.  Iterations = 6  Nodes = 1

CPLEX> dis sol var -
Variable Name           Solution Value
x1                            3.333333
x2                            0.333333
d1                            1.000000
d3                            1.000000
a                             1.000000
All other variables in the range 1-8 are zero.