[Ipopt] Ipopt crashes after switching to emergency mode

Jarkko Miettinen jarkko.miettinen at relex.fi
Tue Feb 3 09:48:37 EST 2015

I am using Ipopt with MUMPS through jIpopt on OS X. The version is 3.11.9.
When using a specific (not too large) set of data with my model using 
metrotha-algorithm, I get a segmentation fault every time.

Number of nonzeros in equality constraint Jacobian...:     5560
Number of nonzeros in inequality constraint Jacobian.:     1698
Number of nonzeros in Lagrangian Hessian.............:     2085

Least square initialization of x and s failed!
Total number of variables............................:     1678
                      variables with only lower bounds:     1678
                 variables with lower and upper bounds:        0
                      variables with only upper bounds:        0
Total number of equality constraints.................:     1390
Total number of inequality constraints...............:     1685
         inequality constraints with only lower bounds:     1683
    inequality constraints with lower and upper bounds:        2
         inequality constraints with only upper bounds:        0


iter    objective    inf_pr   inf_du lg(mu)  ||d||  lg(rg) alpha_du alpha_pr  ls
  190  7.4376043e+03 6.07e+03 9.14e+22   4.8 1.60e+03  19.8 9.95e-01 6.80e-04h  1
  191  9.2395614e+03 4.74e+05 1.18e+23  -5.1 1.18e+08  19.3 9.07e-01 6.61e-05h  1
  192  9.1964024e+03 7.82e+03 1.18e+23 -10.2 2.45e+03  19.7 9.90e-01 2.46e-02h  1
  193  9.1963215e+03 7.82e+03 1.18e+23 -11.0 1.57e+04  19.2 9.90e-01 3.81e-05h  1
  194  2.5322626e+04 1.87e+06 6.10e+23 -11.0 6.72e+06  19.7 7.55e-01 3.55e-03h  1
  195  2.5373612e+04 2.40e+04 6.11e+23   1.9 2.05e+05  19.2 1.00e+00 6.26e-04h  1
  196  2.5373315e+04 2.40e+04 6.11e+23   1.7 2.39e+04  19.6 1.00e+00 3.24e-05h  1
WARNING: Problem in step computation; switching to emergency mode.
  197r 2.5373315e+04 2.40e+04 1.00e+03   4.4 0.00e+00  19.1 0.00e+00 0.00e+00R  1

There was a release 3.11.10 which mentioned a memory allocation bug, but 
this does not seem to me like that.
Both crashes seem to have something to do with smart pointers (see the 
attached error logs for stack trace) and curiously both have the same 
function (Journalist#printf, 
in callee-saved register.

I would've reported this error in trac, but I seem to get this error on 
every form submission there: Missing or invalid form token. Do you have 
cookies enabled?

Do the stack traces point enough to correct direction, or would more 
information be useful? I don't see an easy way to make this easily 
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