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Fix graphml output of concurrency witnesses #1511

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Merged
merged 1 commit into from
Oct 24, 2017
Merged

Fix graphml output of concurrency witnesses #1511

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8 changes: 8 additions & 0 deletions regression/cbmc-concurrency/graphml_witness1/main.c
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Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
int global;

int main()
{
__CPROVER_ASYNC_1: global=1;
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Suggest // Create thread to set global to 1 then exit

global=2;
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// Runs in main thread only ?

assert(global==2); // to fail
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// Fails if the spawned thread runs after the main

}
10 changes: 10 additions & 0 deletions regression/cbmc-concurrency/graphml_witness1/test.desc
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
CORE
main.c
--graphml-witness -
^EXIT=10$
^SIGNAL=0$
^VERIFICATION FAILED$
<graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
</graphml>
--
^warning: ignoring
2 changes: 1 addition & 1 deletion src/goto-programs/graphml_witness.cpp
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Expand Up @@ -141,7 +141,7 @@ static bool filter_out(
goto_tracet::stepst::const_iterator &it)
{
if(it->hidden &&
(!it->is_assignment() ||
(!it->pc->is_assign() ||
to_code_assign(it->pc->code).rhs().id()!=ID_side_effect ||
to_code_assign(it->pc->code).rhs().get(ID_statement)!=ID_nondet))
return true;
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