mirror of https://github.com/YosysHQ/yosys.git
Add support for "yosys-smtbmc -c --append"
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@ -872,6 +872,18 @@ elif covermode:
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smt.write("(pop 1)")
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break
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if append_steps > 0:
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for i in range(step+1, step+1+append_steps):
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print_msg("Appending additional step %d." % i)
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smt.write("(declare-fun s%d () |%s_s|)" % (i, topmod))
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smt.write("(assert (not (|%s_is| s%d)))" % (topmod, i))
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smt.write("(assert (|%s_u| s%d))" % (topmod, i))
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smt.write("(assert (|%s_h| s%d))" % (topmod, i))
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smt.write("(assert (|%s_t| s%d s%d))" % (topmod, i-1, i))
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smt.write("(assert %s)" % get_constr_expr(constr_assumes, i))
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print_msg("Re-solving with appended steps..")
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assert smt.check_sat() == "sat"
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reached_covers = smt.bv2bin(smt.get("(covers_%d s%d)" % (coveridx, step)))
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assert len(reached_covers) == len(cover_desc)
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@ -891,7 +903,7 @@ elif covermode:
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if print_failed_asserts(i, extrainfo=" (step %d)" % i):
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found_failed_assert = True
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write_trace(0, step+1, "%d" % coveridx)
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write_trace(0, step+1+append_steps, "%d" % coveridx)
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if found_failed_assert:
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break
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