Opened 7 years ago

Closed 7 weeks ago

#124 closed defect (migrated)

crash on small instance

Reported by: mlubin Owned by: tkr
Priority: major Component: Cbc
Version: 2.7 Keywords:
Cc:

Description

Cbc 2.7.6 crashes at the root node on the instance at http://www.mcs.anl.gov/~mlubin/cbccrash.mps.

...
Cbc0038I Before mini branch and bound, 81 integers at bound fixed and 1 continuous
Cbc0038I Full problem 23 rows 95 columns, reduced to 5 rows 10 columns
Cbc0038I Mini branch and bound did not improve solution (0.01 seconds)
Cbc0038I After 0.01 seconds - Feasibility pump exiting with objective of 116.2 - took 0.01 seconds
Cbc0012I Integer solution of 116.2 found by feasibility pump after 0 iterations and 0 nodes (0.01 seconds)
Cbc0038I Full problem 23 rows 95 columns, reduced to 2 rows 3 columns
Cbc0038I Full problem 23 rows 95 columns, reduced to 0 rows 0 columns
terminate called after throwing an instance of 'CoinError'

Debugging indicates that the crash is inside of CglProbing? (hard to tell if this is a Cgl bug or a Cbc bug).

Attachments (1)

cbccrash.mps (17.7 KB) - added by mlubin 7 years ago.

Download all attachments as: .zip

Change History (2)

Changed 7 years ago by mlubin

comment:1 Changed 7 weeks ago by stefan

  • Resolution set to migrated
  • Status changed from new to closed

This ticket has been migrated to GitHub and will be resolved there: https://github.com/coin-or/Cbc/issues/124

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