MacMINLP : ampl collection of Mixed Integer Nonlinear Programs

This directory contains a collection of Mixed Integer Nonlinear Programming (MINLP) test problems in AMPL. A student version of AMPL is available for free which can handle problems with up to 300 variables or constraints.

The integer variables, Special Ordered Sets and priorities are specified through an int file. Note that the int file is not required by default as AMPL allows the definition of integer variables.

In the Table below, the following column headings are used:
heading meaning
NAME the name of the problem, click for a short reference
mod file the corresponding ampl model file
dat file the corresponding ampl data file
int file the corresponding integer file
CUTE classification Classification as Nonlinear Program (NLP)
#int the number of integer variables
convex (Y/N) depending on whether the problem is convex or not
f(x) objective value of NLP relaxation
f(x*) optimal objective value or best solution found

The collection is available as a single tar file (simply gunzip and tar xf the file) or as individual problems below or as a collection of stub.nl files which can be interpreted by an AMPL solver interface and do not require the AMPL itself. A file with the AMPL commands used to run the problems is also available.

Click on the NAME of the problem for a short description. The complete list of descriptions can be found here. Finally, a list of updates and changes to the AMPL files and the int files is here.

NAME mod file dat file int file CUTE classification #int convex f(x) f(x*)
batch batch.mod n/a batch.int OOR2-AN-46-73 24 Y 259180 285507
c-reload-14a c-reload.mod c-reload-14a.dat c-reload.int OOR2-AN-342-308 168 N -1.00752 -1.00743
c-reload-14b c-reload.mod c-reload-14b.dat c-reload.int LOR2-AN-342-308 168 N -1.0253 -1.02522
c-reload-14c c-reload.mod c-reload-14c.dat c-reload.int LOR2-AN-342-308 168 N -0.99595 -0.99988
c-reload-14d c-reload.mod c-reload-14d.dat c-reload.int LOR2-AN-342-308 168 N -1.0340 -1.03405
c-reload-14e c-reload.mod c-reload-14e.dat c-reload.int LOR2-AN-342-308 168 N -1.0326 -1.03306
c-reload-14f c-reload.mod c-reload-14f.dat c-reload.int LOR2-AN-342-308 168 N -1.0172 -1.01784
c-reload-q-24 c-reload-q.mod c-reload-q-24.dat n/a LOR2-AN-968-632 576 N -1.12795 -1.12795
c-reload-q-25 c-reload-q.mod c-reload-q-25.dat n/a LOR2-AN-1033-658 625 N ? ?
c-reload-q-49 c-reload-q.mod c-reload-q-49.dat n/a LOR2-AN-3292-1430 2401 N ? ?
c-reload-q-104 c-reload-q.mod c-reload-q-104.dat n/a LOR2-AN-12906-3338 10816 N ? ?
c-sched1 c-sched.mod c-sched1.dat c-sched1.int OLR2-AN-73-16 60 Y -30640.6 -30639.3
c-sched2 c-sched.mod c-sched2.dat c-sched2.int OLR2-AN-400-137 308 Y -166247 -166102
feedloc feedloc.mod n/a feedloc.int LOR2-AN-90-259 37 N 0.0 0.0
geartrain geartrain.mod n/a n/a OBR2-AN-4-0 4 Y 9.23355E-11 7.77863E-07
lbti-00-15 lbti-00.mod lbti-00-15.dat n/a OOR2-AN-274-402 169 N ? 0.988
lbti-00-20 lbti-00.mod lbti-00-20.dat n/a OOR2-AN-274-402 169 N ? 0.988
lbti-00-40 lbti-00.mod lbti-00-40.dat n/a OOR2-AN-274-402 169 N ? 0.988
lbti-01-15 lbti-01.mod lbti-01-15.dat n/a OOR2-AN-334-502 229 N ? 0.983
lbti-01-20 lbti-01.mod lbti-01-20.dat n/a OOR2-AN-334-502 229 N ? 0.983
lbti-01-40 lbti-01.mod lbti-01-40.dat n/a OOR2-AN-334-502 229 N ? 0.983
lbti-02-297 lbti-02.mod lbti-02-297.dat n/a QOR2-AN-7101-13004 6702 N ? 1.21
mittelman mittelman.mod n/a n/a OOR2-AN-16-7 16 N 5.02361 13.0000
optprloc optprloc.mod n/a n/a QQR2-AN-30-29 25 Y -16.4198 -8.06414
space-25 space-25.mod space-25.dat space-25.int LQR2-AN-893-235 750 N 483.811 484.329
space-25-r space-25-r.mod space-25-r.dat space-25.int LQR2-AN-818-160 750 N 483.811 484.329
space-960 space-960.mod space-960.dat space-960.int LQR2-AN-15137-8417 9600 N ? ?
space-960-i space-960-i.mod space-960-i.dat n/a LQR2-AN-5537-6497 960 N ? ?
space-960-ir space-960-ir.mod space-960-ir.dat n/a LQR2-AN-2657-3617 960 N ? ?
space-960-r space-960-r.mod space-960-r.dat space-960.int LQR2-AN-12257-5537 9600 N ? ?
spring spring.mod n/a spring.int OOR2-AN-17-10 11 N 0.832025 0.846246
stockcycle stockcycle.mod n/a stockcycle.int OLR2-AN-480-97 480 Y 117916 121113 ?
synthes1 synthes1.mod n/a n/a OOR2-AN-6-6 3 Y 0.759284 6.00976
synthes2 synthes2.mod n/a n/a OOR2-AN-11-14 5 Y -0.554417 73.0353
synthes3 synthes3.mod n/a n/a OOR2-AN-17-19 8 Y 15.0822 68.0097
top1-15x05 top.mod top1-15x05.dat top.scl OQR2-MN-260-186 75 N 203.343 NLP fail
top1-30x10 top.mod top1-30x10.dat top.scl OQR2-MN-970-671 300 N 202.92 ?
top1-60x20 top.mod top1-60x20.dat top.scl OQR2-MN-3740-2541 1200 N ? ?
trimlon2 trimlon.mod trimlon2.dat trimlon.int LOR2-AN-8-12 8 N 4.06375 5.3
trimlon4 trimlon.mod trimlon4.dat trimlon.int LOR2-MN-24-26 24 N 7.66333 11.3
trimlon5 trimlon.mod trimlon5.dat trimlon.int LOR2-MN-35-33 35 N 9.664 12.1
trimlon6 trimlon.mod trimlon6.dat trimlon.int LOR2-MN-48-41 48 N 14.6913 19.4
trimlon7 trimlon.mod trimlon7.dat trimlon.int LOR2-MN-63-42 63 N 13.6507 ?
trimlon12 trimlon.mod trimlon12.dat trimlon.int LOR2-MN-168-72 168 N 85.3546 ?
trimloss2 trimloss.mod trimloss2.dat trimloss2.int LOR2-AN-37-24 31 Y 0.718306 5.3
trimloss4 trimloss.mod trimloss4.dat trimloss4.int LOR2-MN-105-64 85 Y 1.70933 9.3
trimloss5 trimloss.mod trimloss5.dat trimloss5.int LOR2-MN-161-90 131 Y 1.1788683 12.4
trimloss6 trimloss.mod trimloss6.dat trimloss6.int LOR2-MN-215-120 173 Y 1.30565 ?
trimloss7 trimloss.mod trimloss7.dat trimloss7.int LOR2-MN-345-154 289 Y 0.593496 ?
trimloss12 trimloss.mod trimloss12.dat trimloss12.int LOR2-MN-800-372 656 Y 2.31187 ?
wind-fac wind-fac.mod n/a n/a LOR2-AN-15-14 3 N 0.118262 0.254487

MacMINLP: ampl collection of MINLP Test Problems


Maintained by Sven Leyffer
Email: leyffer@mcs.anl.gov
Last modified: 27 July, 2000