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Merge pull request #5285 from jix/abstract_initstates

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abstract: Add -initstates option
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Jannis Harder 2025-08-18 15:39:09 +02:00 • committed by GitHub
commit 7c409e2d5a
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2 changed files with 84 additions and 11 deletions
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tests/various/abstract_initstates.ys Normal file
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read_verilog <<EOT
module half_clock (CLK, Q, magic);
input CLK;
output reg Q = 0;
input magic;
always @(posedge CLK)
Q <= ~Q;
endmodule
EOT
proc
design -save half_clock
sat -set-init-undef -enable_undef -verify -seq 5 -set-at 1 Q 0
sat -set-init-undef -enable_undef -falsify -seq 5 -set-at 1 Q 0 -set-at 2 Q 0
sat -set-init-undef -enable_undef -falsify -seq 5 -set-at 2 Q 0 -set-at 3 Q 0
abstract -state -initstates 1 */Q
sat -set-init-undef -enable_undef -verify -seq 5 -set-at 1 Q 0 -set-at 2 Q 0
sat -set-init-undef -enable_undef -falsify -seq 5 -set-at 2 Q 0 -set-at 3 Q 0
design -load half_clock
sat -set-init-undef -enable_undef -falsify -seq 5 -set-at 1 Q 0 -set-at 2 Q 0
sat -set-init-undef -enable_undef -falsify -seq 5 -set-at 2 Q 0 -set-at 3 Q 0
sat -set-init-undef -enable_undef -falsify -seq 5 -set-at 3 Q 0 -set-at 4 Q 0
abstract -state -initstates 2 */Q
sat -set-init-undef -enable_undef -verify -seq 5 -set-at 1 Q 0 -set-at 2 Q 0
sat -set-init-undef -enable_undef -verify -seq 5 -set-at 1 Q 0 -set-at 2 Q 0 -set-at 3 Q 0
sat -set-init-undef -enable_undef -falsify -seq 5 -set-at 3 Q 0 -set-at 4 Q 0