lilypond 2.14.2 crashes randomly (once it may run successfully, the next
time it may crash, etc.) on the following file. The error message is:

Preprocessing graphical objects...throw from within critical section.
Aborted

Since the message talks of "critical section", which usually alludes to
multithreading, it may be of importance that the machine is dual-core.
OS kernel is Linux 3.0.18-rt34


% This LilyPond file was generated by Rosegarden 12.04
\include "nederlands.ly"
\version "2.14.0"
\header {
    copyright = "Copyright (c) xxxx Copyright Holder"
    subtitle = "not yet subtitled"
    title = "Not Yet Titled"
    tagline = "Created using Rosegarden 12.04 and LilyPond"
}
#(set-global-staff-size 32)
#(set-default-paper-size "a4")
global = {
    \time 4/4
    \skip 1*4
}
globalTempo = {
    \override Score.MetronomeMark #'transparent = ##t
    \tempo 4 = 120  
}
\score {
    << % common

    \context Staff = "track 1" <<
        \set Staff.instrumentName = \markup { \column { " " } }
        \set Staff.midiInstrument = "Acoustic Grand Piano"
        \set Score.skipBars = ##t
        \set Staff.printKeyCancellation = ##f
        \new Voice \global
        \new Voice \globalTempo

        \context Voice = "voice 1" {
            \override Voice.TextScript #'padding = #2.0
            \override MultiMeasureRest #'expand-limit = 1
            \once \override Staff.TimeSignature #'style = #'()
            \time 4/4
            
            \clef "treble"
            \key c \major
            g' 4 r b' r  |
            b' 4 r g' r  |
            b' 4 r f' r  |
            R1  |
            \bar "|."
        } % Voice
    >> % Staff (final) ends

>> % notes

\layout {
    \context { \GrandStaff \accepts "Lyrics" }
}
% uncomment to enable generating midi file from the lilypond source
%     \midi {
%     }
} % score

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