./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/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_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/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_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/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 efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e --- 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 04:00:16,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:00:16,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:00:16,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:00:16,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:00:16,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:00:16,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:00:16,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:00:16,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:00:16,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:00:16,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:00:16,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:00:16,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:00:16,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:00:16,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:00:16,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:00:16,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:00:16,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:00:16,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:00:16,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:00:16,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:00:16,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:00:16,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:00:16,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:00:17,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:00:17,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:00:17,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:00:17,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:00:17,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:00:17,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:00:17,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:00:17,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:00:17,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:00:17,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:00:17,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:00:17,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:00:17,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:00:17,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:00:17,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:00:17,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:00:17,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:00:17,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:00:17,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:00:17,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:00:17,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:00:17,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:00:17,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:00:17,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:00:17,060 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:00:17,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:00:17,061 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:00:17,061 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:00:17,062 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:00:17,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:00:17,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:00:17,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:00:17,063 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:00:17,064 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:00:17,064 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:00:17,064 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:00:17,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:00:17,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:00:17,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:00:17,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:00:17,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:00:17,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:00:17,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:00:17,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:00:17,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:00:17,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:00:17,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:00:17,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:17,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:00:17,071 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:00:17,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:00:17,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:00:17,071 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:00:17,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:00:17,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:00:17,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:00:17,072 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_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e [2022-11-03 04:00:17,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:00:17,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:00:17,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:00:17,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:00:17,431 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:00:17,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-11-03 04:00:17,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/data/ad8a9b076/4a4081c52bc64837b39354f118d3af40/FLAG184b82038 [2022-11-03 04:00:18,651 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:00:18,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-11-03 04:00:18,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/data/ad8a9b076/4a4081c52bc64837b39354f118d3af40/FLAG184b82038 [2022-11-03 04:00:19,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/data/ad8a9b076/4a4081c52bc64837b39354f118d3af40 [2022-11-03 04:00:19,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:00:19,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:00:19,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:19,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:00:19,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:00:19,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad45cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19, skipping insertion in model container [2022-11-03 04:00:19,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:00:19,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:00:19,488 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_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2022-11-03 04:00:19,497 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_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2022-11-03 04:00:20,516 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:20,517 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:20,518 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:20,518 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:20,520 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:20,534 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:20,535 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:20,537 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:20,537 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:20,987 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 04:00:20,989 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 04:00:21,003 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 04:00:21,005 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 04:00:21,009 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 04:00:21,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 04:00:21,021 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 04:00:21,022 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 04:00:21,023 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 04:00:21,023 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 04:00:21,323 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 04:00:21,448 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,449 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:21,585 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:00:21,601 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_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2022-11-03 04:00:21,603 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_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2022-11-03 04:00:21,647 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,648 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,649 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,649 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,650 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,659 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,660 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,661 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,661 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 04:00:21,719 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 04:00:21,768 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 04:00:21,770 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 04:00:21,771 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 04:00:21,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 04:00:21,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 04:00:21,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 04:00:21,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 04:00:21,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 04:00:21,807 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 04:00:21,885 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,886 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 04:00:21,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:22,226 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:00:22,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22 WrapperNode [2022-11-03 04:00:22,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:22,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:22,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:00:22,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:00:22,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,436 INFO L138 Inliner]: procedures = 691, calls = 2666, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 887 [2022-11-03 04:00:22,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:22,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:00:22,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:00:22,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:00:22,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:00:22,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:00:22,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:00:22,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:00:22,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (1/1) ... [2022-11-03 04:00:22,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:22,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:00:22,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:00:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-03 04:00:22,669 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-03 04:00:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 04:00:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:00:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 04:00:22,670 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 04:00:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:00:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 04:00:22,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 04:00:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:00:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:00:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-03 04:00:22,672 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-03 04:00:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:00:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-03 04:00:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-03 04:00:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:00:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:00:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 04:00:22,674 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 04:00:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-03 04:00:22,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-03 04:00:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 04:00:22,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 04:00:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:00:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:00:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-11-03 04:00:22,676 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-11-03 04:00:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:00:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-03 04:00:22,676 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-03 04:00:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-03 04:00:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-03 04:00:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-11-03 04:00:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-11-03 04:00:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:00:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-11-03 04:00:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-11-03 04:00:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:00:23,027 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:00:23,035 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:00:24,595 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:00:24,905 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:00:24,905 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 04:00:24,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:24 BoogieIcfgContainer [2022-11-03 04:00:24,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:00:24,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:00:24,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:00:24,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:00:24,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:00:19" (1/3) ... [2022-11-03 04:00:24,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7373efc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:24, skipping insertion in model container [2022-11-03 04:00:24,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:22" (2/3) ... [2022-11-03 04:00:24,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7373efc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:24, skipping insertion in model container [2022-11-03 04:00:24,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:24" (3/3) ... [2022-11-03 04:00:24,925 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2022-11-03 04:00:24,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:00:24,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:00:25,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:00:25,063 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;@714f3071, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:00:25,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:00:25,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-03 04:00:25,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 04:00:25,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:25,087 INFO L195 NwaCegarLoop]: trace histogram [7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:25,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:25,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1989659951, now seen corresponding path program 1 times [2022-11-03 04:00:25,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:25,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244951716] [2022-11-03 04:00:25,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:25,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-03 04:00:50,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244951716] [2022-11-03 04:00:50,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244951716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:50,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939376726] [2022-11-03 04:00:50,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:50,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:50,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:50,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:50,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34f2481d-9ef8-4ef2-b86d-98e98b0ef348/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:00:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:51,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 149 conjunts are in the unsatisfiable core [2022-11-03 04:00:51,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:51,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-11-03 04:00:51,726 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 04:00:52,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:52,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 51 [2022-11-03 04:00:52,723 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 38 treesize of output 38 [2022-11-03 04:00:52,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-03 04:00:52,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-03 04:00:52,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-03 04:01:04,595 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:04,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 47 [2022-11-03 04:01:04,692 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:01:04,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 120 treesize of output 120 [2022-11-03 04:01:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 37 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 04:01:05,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:08,517 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-03 04:09:21,894 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.