pluto+: examples/heat-2dp - 'make par' fails

[bondhugula]

On the pluto+ branch in examples/heat-2dp, 'make par' fails.

This is due to the pet-based extraction extracting undesirable statements (those that should have been eliminated as dead).

heat-2dp.par.c: In function ‘main’:
heat-2dp.par.c:96:7: error: lvalue required as left operand of assignment
96 | 0 = (0 + 1);;
| ^
heat-2dp.par.c:98:7: error: lvalue required as left operand of assignment
98 | 0 = (0 + 1);;
| ^
heat-2dp.par.c:106:9: error: lvalue required as left operand of assignment
106 | 0 = (0 + 1);;
| ^
make: *** [../common.mk:79: par] Error 1

[bondhugula]

Same issue with heat-1dp, heat-3dp