[aorai] use WP cache in 'prove' ptest configuration

src/plugins/aorai/tests/wp-cache/cache/0cd34210e1bb8edc8de12791f2e503a6.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/0cf0d00d21753b35593fb0ac24051693.json

+{ "prover": "Alt-Ergo:2.2.0", "verdict": "valid", "time": 0.0076,
+  "steps": 28 }

src/plugins/aorai/tests/wp-cache/cache/0cff66417bd0e455a20ef949236ec4a8.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/0d35de9a156941320fb1ce8386ba8b15.json

+{ "prover": "Alt-Ergo:2.2.0", "verdict": "valid", "time": 0.0079,
+  "steps": 38 }

src/plugins/aorai/tests/wp-cache/cache/0de086d6ceda38f44d1eee0ba79bce59.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/0de7b539a3389ae140513f7af6fd2f5f.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/0fa7745a7996b70d68dcb3814f612793.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/12e2c386d5efd6d1e19abd82f9ebb3ce.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/1303b3ebcea7a73d704895821f3cfc78.json

+{ "prover": "Alt-Ergo:2.2.0", "verdict": "valid", "time": 0.0134,
+  "steps": 74 }

src/plugins/aorai/tests/wp-cache/cache/148451a51c4f74929d536c85c35ba60e.json

+{ "prover": "Alt-Ergo:2.2.0", "verdict": "valid", "time": 0.0076,
+  "steps": 20 }

src/plugins/aorai/tests/wp-cache/cache/14ec1ebfcdcf80cc54e9ee553d31b21e.json

+{ "prover": "Alt-Ergo:2.2.0", "verdict": "valid", "time": 0.0292,
+  "steps": 108 }

src/plugins/aorai/tests/wp-cache/cache/15912e773461b337de92d11787c779b8.json

+{ "prover": "Alt-Ergo:2.2.0", "verdict": "valid", "time": 0.2223,
+  "steps": 44 }

src/plugins/aorai/tests/wp-cache/cache/168439df1200cdbdfe122e2e1af19366.json

+{ "prover": "Alt-Ergo:2.2.0", "verdict": "valid", "time": 0.0052,
+  "steps": 60 }

src/plugins/aorai/tests/wp-cache/cache/1684a67857b5cfdcaa6819d543dd108a.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/16d6429a72c00a770a2bf1294d47ff55.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/1716100bc274e1bd1404c700dd88005f.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/173eebfb64e5fc93a392c2f811dc4514.json

+{ "prover": "Alt-Ergo:2.2.0", "verdict": "valid", "time": 0.0072,
+  "steps": 28 }

src/plugins/aorai/tests/wp-cache/cache/18b6d424f1579e057b1498e9822c7604.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/1951e71ddf233b4559ab873b85d34c37.json

+{ "prover": "Alt-Ergo:2.4.1", "verdict": "failed" }

src/plugins/aorai/tests/wp-cache/cache/19aaf255fa827ab93d1536b6aafcb9ac.json

+{ "prover": "Alt-Ergo:2.2.0", "verdict": "valid", "time": 0.334,
+  "steps": 108 }