/export/starexec/sandbox/solver/bin/starexec_run_ttt2-1.17+nonreach /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files


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MAYBE

Problem:
 f(f(f(a(),x),y),z) -> f(f(x,z),f(y,z))
 f(f(b(),x),y) -> x
 f(c(),y) -> y

Proof:
 Open