Add branch exploration for Z3 test case generation #111
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Some performance hit here
…aramana_3d_z3_test_branch_trace
…aramana_3d_z3_test_branch_trace
…empty files reported by @lemmy
…aramana_3d_z3_test_branch_trace
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This PR introduces 3D options:
--z3_branch_depth nto ask z3 to generate test cases for all possible branches of a 3D specification up to depthn, by depth-first search. Default is 0, with the usual behavior. For this purpose, branching points in a 3D specification are field constraints andcasetypes.--z3_options 'option1 ... optionK'to pass command-line options to z3, such as-t:xto impose a per-query timeout ofxmilliseconds