./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:15:00,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:15:00,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:15:00,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:15:00,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:15:00,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:15:00,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:15:00,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:15:00,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:15:00,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:15:00,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:15:00,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:15:00,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:15:00,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:15:00,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:15:00,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:15:00,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:15:00,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:15:00,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:15:00,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:15:00,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:15:00,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:15:00,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:15:00,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:15:00,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:15:00,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:15:00,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:15:00,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:15:00,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:15:00,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:15:00,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:15:00,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:15:00,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:15:00,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:15:00,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:15:00,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:15:00,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:15:00,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:15:00,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:15:00,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:15:00,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:15:00,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:15:00,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:15:00,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:15:00,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:15:00,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:15:00,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:15:00,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:15:00,393 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:15:00,393 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:15:00,393 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:15:00,393 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:15:00,395 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:15:00,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:15:00,395 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:15:00,395 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:15:00,396 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:15:00,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:15:00,396 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:15:00,396 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:15:00,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:15:00,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:15:00,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:15:00,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:15:00,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:15:00,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:15:00,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:15:00,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:15:00,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:15:00,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:15:00,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:15:00,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:15:00,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:15:00,401 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:15:00,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:15:00,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:15:00,402 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:15:00,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:15:00,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:15:00,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:15:00,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2022-11-22 02:15:00,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:15:00,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:15:00,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:15:00,781 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:15:00,781 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:15:00,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-11-22 02:15:04,307 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:15:04,974 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:15:04,979 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-11-22 02:15:05,034 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/data/b29b5f71b/3c335b2425754c0a98fd83788c5bdfd2/FLAG5dbbeba7c [2022-11-22 02:15:05,058 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/data/b29b5f71b/3c335b2425754c0a98fd83788c5bdfd2 [2022-11-22 02:15:05,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:15:05,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:15:05,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:15:05,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:15:05,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:15:05,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:15:05" (1/1) ... [2022-11-22 02:15:05,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c17cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:05, skipping insertion in model container [2022-11-22 02:15:05,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:15:05" (1/1) ... [2022-11-22 02:15:05,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:15:05,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:15:05,683 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-11-22 02:15:05,694 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-11-22 02:15:07,046 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:07,047 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:07,048 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:07,049 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:07,051 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:07,070 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:07,071 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:07,074 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:07,075 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:07,771 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:15:07,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:15:07,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:15:07,776 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:15:07,778 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:15:07,779 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:15:07,780 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:15:07,781 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:15:07,782 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:15:07,783 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:15:08,065 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:15:08,229 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,229 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:15:08,439 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:15:08,468 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-11-22 02:15:08,483 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-11-22 02:15:08,536 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,537 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,537 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,538 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,539 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,558 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,558 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,563 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,563 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:15:08,625 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:15:08,626 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:15:08,628 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:15:08,630 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:15:08,631 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:15:08,631 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:15:08,632 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:15:08,633 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:15:08,637 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:15:08,681 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:15:08,785 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,786 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:08,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:15:09,141 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:15:09,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09 WrapperNode [2022-11-22 02:15:09,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:15:09,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:15:09,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:15:09,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:15:09,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,346 INFO L138 Inliner]: procedures = 691, calls = 2648, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 828 [2022-11-22 02:15:09,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:15:09,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:15:09,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:15:09,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:15:09,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:15:09,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:15:09,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:15:09,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:15:09,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (1/1) ... [2022-11-22 02:15:09,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:15:09,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:15:09,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:15:09,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:15:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-22 02:15:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-22 02:15:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:15:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-22 02:15:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-22 02:15:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:15:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-11-22 02:15:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-11-22 02:15:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:15:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:15:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:15:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:15:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-22 02:15:09,540 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-22 02:15:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:15:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:15:09,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:15:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-22 02:15:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-22 02:15:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-22 02:15:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-22 02:15:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:15:09,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:15:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:15:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:15:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:15:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:15:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-22 02:15:09,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-22 02:15:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2022-11-22 02:15:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2022-11-22 02:15:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:15:09,990 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:15:09,993 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:15:11,673 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:15:12,003 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:15:12,003 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:15:12,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:15:12 BoogieIcfgContainer [2022-11-22 02:15:12,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:15:12,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:15:12,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:15:12,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:15:12,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:15:05" (1/3) ... [2022-11-22 02:15:12,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0945be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:15:12, skipping insertion in model container [2022-11-22 02:15:12,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:09" (2/3) ... [2022-11-22 02:15:12,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0945be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:15:12, skipping insertion in model container [2022-11-22 02:15:12,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:15:12" (3/3) ... [2022-11-22 02:15:12,022 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2022-11-22 02:15:12,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:15:12,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:15:12,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:15:12,140 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d2c6533, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:15:12,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:15:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 57 states have internal predecessors, (68), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-22 02:15:12,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 02:15:12,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:15:12,162 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:15:12,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:15:12,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:15:12,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1596270366, now seen corresponding path program 1 times [2022-11-22 02:15:12,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:15:12,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451777792] [2022-11-22 02:15:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:12,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:15:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-22 02:15:23,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:15:23,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451777792] [2022-11-22 02:15:23,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451777792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:15:23,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390733148] [2022-11-22 02:15:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:23,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:15:23,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:15:23,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:15:23,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e8b9a6-75b0-484a-b68c-e5afcd18c21b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:15:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:24,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-22 02:15:24,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:15:24,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:15:24,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:15:25,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-11-22 02:15:25,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-11-22 02:15:25,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-22 02:15:25,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-22 02:15:25,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:15:28,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:28,090 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 02:15:28,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 39 [2022-11-22 02:15:28,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:15:28,110 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-22 02:15:28,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 32 [2022-11-22 02:15:28,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-22 02:15:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 02:15:28,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:15:30,906 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-22 02:15:49,891 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.