./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur --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 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 --- 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-38b53e6 [2022-11-25 22:35:42,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:35:42,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:35:42,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:35:42,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:35:42,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:35:42,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:35:42,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:35:42,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:35:42,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:35:42,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:35:42,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:35:42,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:35:42,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:35:42,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:35:42,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:35:42,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:35:42,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:35:42,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:35:42,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:35:42,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:35:42,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:35:42,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:35:42,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:35:42,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:35:42,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:35:42,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:35:42,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:35:42,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:35:42,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:35:42,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:35:42,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:35:42,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:35:42,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:35:42,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:35:42,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:35:42,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:35:42,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:35:42,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:35:42,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:35:42,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:35:42,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 22:35:42,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:35:42,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:35:42,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:35:42,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:35:42,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:35:42,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:35:42,725 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:35:42,725 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:35:42,725 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:35:42,726 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:35:42,726 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:35:42,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:35:42,726 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:35:42,727 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:35:42,727 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:35:42,727 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:35:42,728 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:35:42,728 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:35:42,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:35:42,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:35:42,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:35:42,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:35:42,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:35:42,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:35:42,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:35:42,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:35:42,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:35:42,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:35:42,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:35:42,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:35:42,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:35:42,732 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:35:42,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:35:42,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:35:42,733 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:35:42,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:35:42,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:35:42,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:35:42,734 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_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2022-11-25 22:35:43,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:35:43,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:35:43,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:35:43,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:35:43,057 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:35:43,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2022-11-25 22:35:46,550 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:35:47,197 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:35:47,198 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2022-11-25 22:35:47,276 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/data/0e0ca777a/6d8e060348244c8f91592374d42d84ad/FLAGc4cc248de [2022-11-25 22:35:47,295 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/data/0e0ca777a/6d8e060348244c8f91592374d42d84ad [2022-11-25 22:35:47,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:35:47,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:35:47,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:35:47,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:35:47,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:35:47,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:35:47" (1/1) ... [2022-11-25 22:35:47,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650e142c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:47, skipping insertion in model container [2022-11-25 22:35:47,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:35:47" (1/1) ... [2022-11-25 22:35:47,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:35:47,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:35:47,748 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_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2022-11-25 22:35:47,763 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_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2022-11-25 22:35:49,286 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:49,287 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:49,288 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:49,289 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:49,291 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:49,308 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:49,309 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:49,312 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:49,313 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:49,444 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:35:49,445 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:35:49,446 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:35:49,453 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 22:35:49,456 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 22:35:49,456 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 22:35:49,978 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 22:35:50,007 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 22:35:50,009 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 22:35:50,010 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 22:35:50,017 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 22:35:50,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 22:35:50,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 22:35:50,021 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 22:35:50,022 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 22:35:50,023 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 22:35:50,029 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 22:35:50,259 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 22:35:50,286 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:35:50,308 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 22:35:50,320 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:35:50,363 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,364 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,429 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 22:35:50,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:35:50,488 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:35:50,511 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_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2022-11-25 22:35:50,512 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_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2022-11-25 22:35:50,555 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,555 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,556 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,563 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,565 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,576 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,577 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,582 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,582 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,600 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:35:50,600 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:35:50,601 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:35:50,604 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 22:35:50,606 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 22:35:50,606 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 22:35:50,646 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 22:35:50,647 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 22:35:50,648 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 22:35:50,649 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 22:35:50,650 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 22:35:50,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 22:35:50,655 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 22:35:50,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 22:35:50,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 22:35:50,657 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 22:35:50,657 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 22:35:50,707 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 22:35:50,728 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:35:50,742 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 22:35:50,762 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:35:50,800 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,800 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:35:50,843 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 22:35:50,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:35:51,166 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:35:51,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51 WrapperNode [2022-11-25 22:35:51,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:35:51,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:35:51,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:35:51,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:35:51,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,425 INFO L138 Inliner]: procedures = 691, calls = 2638, calls flagged for inlining = 64, calls inlined = 10, statements flattened = 899 [2022-11-25 22:35:51,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:35:51,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:35:51,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:35:51,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:35:51,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:35:51,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:35:51,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:35:51,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:35:51,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (1/1) ... [2022-11-25 22:35:51,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:35:51,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:35:51,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:35:51,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:35:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2022-11-25 22:35:51,674 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2022-11-25 22:35:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-25 22:35:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-25 22:35:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:35:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 22:35:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 22:35:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:35:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:35:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:35:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:35:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:35:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-25 22:35:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-25 22:35:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:35:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:35:51,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:35:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 22:35:51,680 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 22:35:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-25 22:35:51,680 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-25 22:35:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 22:35:51,680 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 22:35:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:35:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:35:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 22:35:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-25 22:35:51,682 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-25 22:35:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-25 22:35:51,683 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-25 22:35:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:35:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:35:52,157 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:35:52,160 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:35:53,765 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:35:54,106 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:35:54,106 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:35:54,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:35:54 BoogieIcfgContainer [2022-11-25 22:35:54,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:35:54,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:35:54,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:35:54,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:35:54,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:35:47" (1/3) ... [2022-11-25 22:35:54,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426571fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:35:54, skipping insertion in model container [2022-11-25 22:35:54,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:51" (2/3) ... [2022-11-25 22:35:54,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426571fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:35:54, skipping insertion in model container [2022-11-25 22:35:54,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:35:54" (3/3) ... [2022-11-25 22:35:54,129 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_c_str_harness.i [2022-11-25 22:35:54,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:35:54,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:35:54,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:35:54,247 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;@5ee76907, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:35:54,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:35:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 62 states have internal predecessors, (74), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-25 22:35:54,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-25 22:35:54,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:35:54,277 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 2, 2, 2, 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] [2022-11-25 22:35:54,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:35:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:35:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash 635743890, now seen corresponding path program 1 times [2022-11-25 22:35:54,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:35:54,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600815606] [2022-11-25 22:35:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:35:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:35:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:36:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-25 22:36:13,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:36:13,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600815606] [2022-11-25 22:36:13,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600815606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:36:13,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143503450] [2022-11-25 22:36:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:36:13,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:36:13,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:36:13,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:36:13,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccdf541-6962-45cb-8a3d-c3be200f0bd0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:36:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:36:14,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-25 22:36:14,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:36:15,284 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:36:15,298 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 [2022-11-25 22:36:24,550 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:36:24,550 INFO L350 Elim1Store]: Elim1 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 99 treesize of output 75 [2022-11-25 22:36:24,599 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:36:24,599 INFO L350 Elim1Store]: Elim1 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 [2022-11-25 22:36:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 22:36:24,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:36:27,669 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-25 22:44:25,570 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.