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https://github.com/YosysHQ/yosys
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4bb4b6c662
This also rolls back any added cells and wires, since we might have added a lot of helper logic by the point we detect this.
31 lines
976 B
Text
31 lines
976 B
Text
verific -sv <<EOF
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module top(input clk, input a, input b);
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prop_supported1: assert property (@(posedge clk) a ##1 b |=> b);
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prop_exploding: assert property (@(posedge clk)
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((a [*7] ##1 b) [*11]) and
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((a [*11] ##1 b) [*7]) and
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((a [*13] ##1 b) [*5]) and
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((a [*5] ##1 b) [*13])
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);
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prop_supported2: assert property (@(posedge clk) a [*5] ##1 b |=> b);
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endmodule
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EOF
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logger -expect warning "Stopping to prevent exponential design size explosion." 1
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verific -import -sva-continue-on-err top
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logger -check-expected
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select -assert-count 3 top/t:$assert
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select -assert-count 1 top/a:unsupported_sva top/prop_exploding %% top/t:$assert %i
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select -assert-count 0 top/a:unsupported_sva top/prop_supported1 %i
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select -assert-count 0 top/a:unsupported_sva top/prop_supported2 %i
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select -assert-count 2 top/prop_supported*
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logger -expect error "uses unsupported SVA constructs." 1
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hierarchy -smtcheck -top top
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logger -check-expected
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