./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI --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 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- 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-5e519f3 [2022-11-03 03:57:53,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:57:53,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:57:53,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:57:53,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:57:53,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:57:53,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:57:53,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:57:53,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:57:53,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:57:53,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:57:53,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:57:53,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:57:53,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:57:53,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:57:53,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:57:53,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:57:53,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:57:53,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:57:53,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:57:53,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:57:53,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:57:53,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:57:53,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:57:53,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:57:53,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:57:53,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:57:53,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:57:53,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:57:53,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:57:53,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:57:53,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:57:53,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:57:53,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:57:53,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:57:53,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:57:53,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:57:53,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:57:53,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:57:53,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:57:53,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:57:53,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:57:54,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:57:54,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:57:54,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:57:54,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:57:54,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:57:54,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:57:54,011 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:57:54,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:57:54,012 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:57:54,012 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:57:54,014 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:57:54,014 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:57:54,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:57:54,015 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:57:54,015 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:57:54,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:57:54,015 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:57:54,016 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:57:54,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:57:54,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:57:54,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:57:54,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:57:54,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:57:54,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:57:54,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:57:54,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:57:54,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:57:54,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:57:54,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:57:54,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:57:54,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:57:54,022 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:57:54,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:57:54,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:57:54,023 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:57:54,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:57:54,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:57:54,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:57:54,024 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_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2022-11-03 03:57:54,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:57:54,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:57:54,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:57:54,462 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:57:54,463 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:57:54,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2022-11-03 03:57:54,547 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/data/b90167a4c/4f206b30ff9244eaa93374abdc5ce9c9/FLAGb3b88b5d4 [2022-11-03 03:57:55,581 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:57:55,582 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2022-11-03 03:57:55,634 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/data/b90167a4c/4f206b30ff9244eaa93374abdc5ce9c9/FLAGb3b88b5d4 [2022-11-03 03:57:55,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/data/b90167a4c/4f206b30ff9244eaa93374abdc5ce9c9 [2022-11-03 03:57:56,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:57:56,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:57:56,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:57:56,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:57:56,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:57:56,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:56" (1/1) ... [2022-11-03 03:57:56,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ef483d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:56, skipping insertion in model container [2022-11-03 03:57:56,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:57:56" (1/1) ... [2022-11-03 03:57:56,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:57:56,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:57:56,613 WARN L230 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_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2022-11-03 03:57:56,625 WARN L230 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_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2022-11-03 03:57:58,007 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,008 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,008 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,009 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,010 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,026 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,032 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,034 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,040 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,593 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 03:57:58,595 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 03:57:58,596 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 03:57:58,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 03:57:58,600 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 03:57:58,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 03:57:58,602 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 03:57:58,603 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 03:57:58,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 03:57:58,605 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 03:57:58,787 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 03:57:58,976 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:58,987 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:57:59,281 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:57:59,310 WARN L230 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_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2022-11-03 03:57:59,311 WARN L230 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_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2022-11-03 03:57:59,369 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,370 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,370 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,371 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,372 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,396 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,397 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,401 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,402 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,435 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 03:57:59,438 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 03:57:59,439 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 03:57:59,440 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 03:57:59,443 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 03:57:59,445 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 03:57:59,445 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 03:57:59,446 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 03:57:59,446 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 03:57:59,452 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 03:57:59,479 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 03:57:59,576 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,577 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 03:57:59,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:57:59,880 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:57:59,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59 WrapperNode [2022-11-03 03:57:59,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:57:59,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:57:59,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:57:59,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:57:59,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,152 INFO L138 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 861 [2022-11-03 03:58:00,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:58:00,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:58:00,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:58:00,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:58:00,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,290 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:58:00,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:58:00,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:58:00,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:58:00,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (1/1) ... [2022-11-03 03:58:00,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:58:00,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:58:00,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:58:00,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:58:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2022-11-03 03:58:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-03 03:58:00,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-03 03:58:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton32 [2022-11-03 03:58:00,427 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton32 [2022-11-03 03:58:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:58:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 03:58:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 03:58:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:58:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:58:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:58:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:58:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:58:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:58:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-03 03:58:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-03 03:58:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:58:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:58:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 03:58:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 03:58:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-03 03:58:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-03 03:58:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:58:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:58:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-03 03:58:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-03 03:58:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:58:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:58:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-11-03 03:58:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-11-03 03:58:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:58:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-03 03:58:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-03 03:58:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:58:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:58:00,904 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:58:00,907 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:58:02,775 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:58:03,252 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:58:03,253 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:58:03,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:03 BoogieIcfgContainer [2022-11-03 03:58:03,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:58:03,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:58:03,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:58:03,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:58:03,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:57:56" (1/3) ... [2022-11-03 03:58:03,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfa89bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:03, skipping insertion in model container [2022-11-03 03:58:03,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:57:59" (2/3) ... [2022-11-03 03:58:03,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfa89bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:58:03, skipping insertion in model container [2022-11-03 03:58:03,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:58:03" (3/3) ... [2022-11-03 03:58:03,278 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2022-11-03 03:58:03,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:58:03,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:58:03,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:58:03,400 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;@66182fb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:58:03,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:58:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-03 03:58:03,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-03 03:58:03,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:03,418 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 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] [2022-11-03 03:58:03,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:58:03,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:03,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1691549819, now seen corresponding path program 1 times [2022-11-03 03:58:03,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:03,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758810222] [2022-11-03 03:58:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:03,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 03:58:25,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:25,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758810222] [2022-11-03 03:58:25,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758810222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:58:25,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801663508] [2022-11-03 03:58:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:25,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:58:25,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:58:25,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:58:25,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab36355d-32db-45a3-8cfd-60b85e4b2a6f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:58:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:25,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 133 conjunts are in the unsatisfiable core [2022-11-03 03:58:25,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:58:26,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-03 03:58:27,148 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:58:27,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-03 03:58:27,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-03 03:58:32,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:58:32,308 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:58:32,334 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:58:32,343 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:58:37,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:58:37,654 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 03:58:37,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 51 [2022-11-03 03:58:37,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-03 03:58:52,556 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:58:52,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 78 treesize of output 62 [2022-11-03 03:58:52,648 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:58:52,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-03 03:58:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:58:53,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:58:56,802 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-03 04:07:49,321 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.