Description

Tests the CPLEX link option 'userincbcall' (BCH incumbent checker). This instance
further includes tests of 'miptrace' and BCH heuristics.

Contributor: Renke Kuhlmann, October 2020

Small Model of Type : GAMS

Category : GAMS Test library

Main file : cplex07.gms

$title 'CPLEX test suite - bch incumbent checker' (CPLEX07,SEQ=832)
$if not '%GAMS.lp%' == '' $set solver %GAMS.lp%
$if not set solver        $set solver cplex
$onText
Tests the CPLEX link option 'userincbcall' (BCH incumbent checker). This instance
further includes tests of 'miptrace' and BCH heuristics.

Contributor: Renke Kuhlmann, October 2020
$offText

$call gamslib -q 12

$call =gams magic lo=%GAMS.lo% solver=%solver%
$if errorlevel 1 $abort 'problems solving original problem'


* testing incumbent report

$onEchoV > incubemt_check.gms
$echo BCH Incumbent Report > cplex07_empty_report.txt
$offEcho

$echo userincbicall incubemt_check > %solver%.opt

$call =gams magic lo=%GAMS.lo% solver=%solver% optfile=1
$if errorlevel 1 $abort 'problems with %solver% userincbicall option'

$call =grep -q "BCH Incumbent Report" magic.lst
$if errorlevel 1 $abort 'problems with %solver% userincbcall option'
$call =grep -q "BCH Incumbent Report" cplex07_empty_report.txt
$if errorlevel 1 $abort 'problems with %solver% userincbcall option'


* testing incumbent check and miptrace (always accept)

$onEchoV > incubemt_check.gms
abort 'accept incumbent';
$offEcho

$echo userincbcall incubemt_check > %solver%.opt
$echo miptrace miptrace.trc >> %solver%.opt

$call =gams magic lo=%GAMS.lo% solver=%solver% optfile=1
$if errorlevel 1 $abort 'problems with %solver% userincbcall option'

$call =grep -q "BCH Incumbent Check: Rejected" magic.lst
$if not errorlevel 1 $abort 'problems with %solver% userincbcall option'
$call =grep -q "BCH Incumbent Check: Accepted" magic.lst
$if errorlevel 1 $abort 'problems with %solver% userincbcall option'

$call =grep -q ".*, E, .*, 988540, 988540" miptrace.trc
$if errorlevel 1 $abort 'problems with %solver% miptrace option'


* testing incumbent check and miptrace (always reject)

$onEchoV > incubemt_check.gms

$offEcho

$echo userincbcall incubemt_check > %solver%.opt
$echo miptrace miptrace.trc >> %solver%.opt

$call =gams magic lo=%GAMS.lo% solver=%solver% optfile=1 nodlim=20
$if errorlevel 1 $abort 'problems with %solver% userincbcall option'

$call =grep -q "BCH Incumbent Check: Rejected" magic.lst
$if errorlevel 1 $abort 'problems with %solver% userincbcall option'
$call =grep -q "BCH Incumbent Check: Accepted" magic.lst
$if not errorlevel 1 $abort 'problems with %solver% userincbcall option'

$call =grep -q ".*, E, .*, na, 988540" miptrace.trc
$if errorlevel 1 $abort 'problems with %solver% miptrace option'


* testing incumbent check and user heuristics
* the user heuristic fixes the n variables which gives a solution of 1320300

$onEchoV > userheur.gms
$include magic.gms
n.lo(g,t) = n.up(g,t);
solve william minimizing cost using mip;
$offEcho

$onEchoV > incubemt_check.gms
Parameter c;
$gdxIn bchout_i.gdx
$load c=cost.l
$gdxIn
abort$(c = 1320300) 'accept incumbent';
$offEcho

$echo userheurcall userheur.gms >> %solver%.opt

$call =gams magic lo=%GAMS.lo% solver=%solver% optfile=1 nodlim=20
$if errorlevel 1 $abort 'problems with %solver% userincbcall option'

$call =grep -q "BCH Incumbent Check: Rejected" magic.lst
$if errorlevel 1 $abort 'problems with %solver% userincbcall option'
$call =grep -q "BCH Incumbent Check: Accepted" magic.lst
$if errorlevel 1 $abort 'problems with %solver% userincbcall option'

$call =grep -q ".*, E, .*, 1320300\|.*, E, .*, 1.3203e+06" miptrace.trc
$if errorlevel 1 $abort 'problems with %solver% miptrace option'