Solver (xpress) returned non-zero return code (3221225477) and EXCEPTION_ACCESS_VIOLATION

Question

Has anyone run into issues with "ERROR: Solver (xpress) returned non-zero return code (3221225477)" and "ERROR within optimization The optimizer has encountered an unexpected exception: 0xc0000005 (EXCEPTION_ACCESS_VIOLATION)"?I am not too familiar with Xpress, so I appreciate any advice.Here is the output log:ERROR: Solver (xpress) returned non-zero return code (3221225477)ERROR: Solver log: FICO Xpress Solver 64bit v8.8.0 Nov 21 2019 (c) Copyright&nbsp;&nbsp;&nbsp;Fair Isaac Corporation 1983-2019. All rights reserved&nbsp;&nbsp;&nbsp;&nbsp;Optimizer v35.01.01&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reading Problem 	mpo9loh692.pyomo Problem Statistics&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76029 (&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 spare) rows 80380 (&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 spare) structural columns&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12670668 ( 2220102 spare) non-zero elements&nbsp;&nbsp;&nbsp;Global Statistics&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9099 entities&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 sets&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 set members&nbsp;&nbsp;&nbsp;FICO Xpress v8.8.0, Hyper, solve started 16:29:58, Sep 13, 2023 Heap&nbsp;&nbsp;&nbsp;usage: 194MB (peak 194MB, 2MB system) Minimizing MILP 	mpo9loh692.pyomo&nbsp;&nbsp;&nbsp;Original problem has:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76029 rows&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80380 cols&nbsp;&nbsp;&nbsp;&nbsp;12670668 elements&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9099 globals&nbsp;&nbsp;&nbsp;Presolved problem has:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38413 rows&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;51984 cols&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7744184 elements&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6271 globals&nbsp;&nbsp;&nbsp;LP relaxation tightened Presolve finished in 39 seconds Heap usage: 418MB&nbsp;&nbsp;&nbsp;(peak 902MB, 2MB system)&nbsp;&nbsp;&nbsp;Coefficient range&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;original&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;solved&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Coefficients&nbsp;&nbsp;[min,max] : [ 1.00e-06,&nbsp;1.00e+08] / [ 1.00e-06,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.00e+00] RHS and bounds [min,max] : [ 5.68e-14,&nbsp;1.00e+08] / [&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.08e-03,&nbsp;1.68e+07] Objective&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[min,max] : [ 1.00e+00,&nbsp;1.00e+00] /&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[ 1.00e-03,&nbsp;1.00e+08]&nbsp;&nbsp;&nbsp;Symmetric problem: generators: 26, support set: 231&nbsp;&nbsp;&nbsp;&nbsp;Number of orbits: 77, largest orbit: 3 Row orbits: 148, row support: 348&nbsp;&nbsp;&nbsp;Will try to keep branch and bound tree memory usage below 486.0GB Fixed&nbsp;&nbsp;&nbsp;231 (of 231) columns in 3 (of 3) subproblems&nbsp;&nbsp;&nbsp;Starting concurrent solve with dual, primal and barrier (98 threads)&nbsp;***REMOVED FOR SPACE SAVING***&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-------- Concurrent statistics:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Dual: 34209 simplex iterations, 30.29s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Primal: 16367 simplex iterations, 30.30s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Barrier: 23 barrier and 2136 simplex iterations, 62.46s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Barrier used 98 threads 56 cores, L1\L2 cache: 32K\39424K&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Barrier used AVX support, crossover used 8 threads&nbsp;&nbsp;&nbsp;Optimal solution found&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Its&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Obj Value&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;S&nbsp;&nbsp;Ninf&nbsp;Nneg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sum Inf&nbsp;Time&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65934801.78&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;P&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;.000000&nbsp;&nbsp;103&nbsp;&nbsp;&nbsp;Barrier solved problem&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 barrier and 1 simplex iterations in 103s&nbsp;&nbsp;&nbsp;Final objective&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;: 6.593480177943809e+07&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Max primal violation&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(abs/rel) : 8.481e-11 / 8.481e-11 Max dual&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;violation&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(abs/rel) : 7.105e-15 / 7.105e-15 Max complementarity&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;viol. (abs/rel) :&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.0 /&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.0&nbsp;&nbsp;&nbsp;All values within tolerances&nbsp;&nbsp;&nbsp;Starting root cutting &amp; heuristics&nbsp;&nbsp;&nbsp;&nbsp;Its Type&nbsp;&nbsp;&nbsp;BestSoln&nbsp;&nbsp;&nbsp;BestBound&nbsp;&nbsp;Sols&nbsp;&nbsp;&nbsp;Add&nbsp;&nbsp;&nbsp;Del&nbsp;&nbsp;&nbsp;&nbsp;Gap&nbsp;&nbsp;&nbsp;&nbsp;GInf&nbsp;&nbsp;&nbsp;&nbsp;Time&nbsp;&nbsp;&nbsp;k&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1666201569.&nbsp;65934801.78&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;96.04%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;106 c&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;564036618.3&nbsp;65934801.78&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;88.31%&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;108 In vectored exception handler&nbsp;&nbsp;&nbsp;**********************************************************************&nbsp;&nbsp;&nbsp;ERROR within optimization The optimizer has encountered an unexpected&nbsp;&nbsp;&nbsp;exception:&nbsp;&nbsp;&nbsp;&nbsp;0xc0000005 (EXCEPTION_ACCESS_VIOLATION) at 0x00007FFDDFC4E899 in thread&nbsp;&nbsp;&nbsp;&nbsp;ID# 30064&nbsp;&nbsp;&nbsp;The following diagnostic information may be of use to the FICO Xpress&nbsp;&nbsp;&nbsp;support team&nbsp;&nbsp;&nbsp;Command string :&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;mipoptimize&nbsp;&nbsp;&nbsp;**********************************************************************Thanks in advance!

fico · Answer

It looks like the solver crashed, which would be a bug in the solver. How exactly are you invoking the solver? From the console? From Mosel? From an application? In another way? Can you share the model that triggers this problem?

You are using version 8.8 which is rather old. Can you upgrade to a more recent version? There are chances that the bug is already fixed there.

fico · Answer

It seems you also submitted this problem to the support channel. Let's continue discussing there. Most important question is whether you can upgrade to a more recent version of Xpress and whether the issue persists.

Forum Discussion

Solver (xpress) returned non-zero return code (3221225477) and EXCEPTION_ACCESS_VIOLATION

2 Replies

Related Content

Related Content

Shipping Sequential Decision Policies with FICO Xpress and DecisionOps

Xpress Optimization Video Library

FICO® Xpress Mosel