./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 2329fc70 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_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/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_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh --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-2329fc7 [2022-12-14 10:37:23,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:37:23,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:37:23,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:37:23,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:37:23,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:37:23,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:37:23,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:37:23,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:37:23,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:37:23,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:37:23,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:37:23,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:37:23,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:37:23,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:37:23,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:37:23,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:37:23,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:37:23,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:37:23,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:37:23,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:37:23,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:37:23,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:37:23,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:37:23,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:37:23,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:37:23,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:37:24,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:37:24,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:37:24,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:37:24,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:37:24,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:37:24,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:37:24,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:37:24,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:37:24,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:37:24,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:37:24,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:37:24,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:37:24,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:37:24,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:37:24,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 10:37:24,028 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:37:24,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:37:24,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:37:24,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:37:24,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:37:24,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:37:24,030 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:37:24,030 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:37:24,030 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:37:24,031 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:37:24,031 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:37:24,031 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:37:24,031 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:37:24,031 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:37:24,031 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:37:24,032 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:37:24,032 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:37:24,032 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:37:24,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:37:24,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:37:24,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:37:24,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:37:24,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:37:24,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:37:24,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:37:24,034 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:37:24,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:37:24,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:37:24,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:37:24,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:37:24,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:37:24,035 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:37:24,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:37:24,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:37:24,036 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:37:24,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:37:24,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:37:24,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:37:24,036 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_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2022-12-14 10:37:24,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:37:24,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:37:24,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:37:24,219 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:37:24,219 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:37:24,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2022-12-14 10:37:26,739 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:37:27,126 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:37:27,127 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2022-12-14 10:37:27,153 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/data/7febff426/f42418bb34af447887277efd551a15a8/FLAG1e4efd14d [2022-12-14 10:37:27,306 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/data/7febff426/f42418bb34af447887277efd551a15a8 [2022-12-14 10:37:27,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:37:27,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:37:27,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:37:27,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:37:27,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:37:27,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:37:27" (1/1) ... [2022-12-14 10:37:27,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35efedee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:27, skipping insertion in model container [2022-12-14 10:37:27,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:37:27" (1/1) ... [2022-12-14 10:37:27,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:37:27,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:37:27,639 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_56df9a1e-73c0-48b2-a684-1ea198b05f3d/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2022-12-14 10:37:27,647 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_56df9a1e-73c0-48b2-a684-1ea198b05f3d/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2022-12-14 10:37:28,307 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,308 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,308 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,309 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,310 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,319 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,320 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,321 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,322 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,388 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:37:28,388 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:37:28,389 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:37:28,393 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 10:37:28,395 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 10:37:28,395 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 10:37:28,625 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 10:37:28,626 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 10:37:28,627 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 10:37:28,628 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 10:37:28,628 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 10:37:28,629 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 10:37:28,630 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 10:37:28,630 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 10:37:28,631 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 10:37:28,631 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 10:37:28,632 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 10:37:28,757 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 10:37:28,774 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:37:28,787 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 10:37:28,795 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:37:28,822 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,823 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,865 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:37:28,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:37:28,903 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:37:28,912 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_56df9a1e-73c0-48b2-a684-1ea198b05f3d/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2022-12-14 10:37:28,913 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_56df9a1e-73c0-48b2-a684-1ea198b05f3d/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2022-12-14 10:37:28,935 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,935 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,936 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,936 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,936 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,940 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,941 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,941 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,942 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:28,946 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:37:28,947 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:37:28,947 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:37:28,949 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 10:37:28,950 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 10:37:28,950 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 10:37:28,964 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 10:37:28,964 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 10:37:28,965 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 10:37:28,965 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 10:37:28,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 10:37:28,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 10:37:28,967 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 10:37:28,967 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 10:37:28,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 10:37:28,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 10:37:28,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 10:37:29,006 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 10:37:29,018 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:37:29,027 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 10:37:29,033 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:37:29,056 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:29,056 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:37:29,082 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:37:29,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:37:29,316 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:37:29,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29 WrapperNode [2022-12-14 10:37:29,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:37:29,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:37:29,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:37:29,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:37:29,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,453 INFO L138 Inliner]: procedures = 691, calls = 2638, calls flagged for inlining = 64, calls inlined = 10, statements flattened = 899 [2022-12-14 10:37:29,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:37:29,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:37:29,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:37:29,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:37:29,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,515 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:37:29,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:37:29,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:37:29,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:37:29,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (1/1) ... [2022-12-14 10:37:29,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:37:29,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:37:29,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:37:29,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:37:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2022-12-14 10:37:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2022-12-14 10:37:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-14 10:37:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-14 10:37:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:37:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 10:37:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 10:37:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:37:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:37:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:37:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:37:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:37:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-12-14 10:37:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-12-14 10:37:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:37:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:37:29,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:37:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 10:37:29,605 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 10:37:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-14 10:37:29,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-14 10:37:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:37:29,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:37:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:37:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:37:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:37:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 10:37:29,606 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 10:37:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 10:37:29,606 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 10:37:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:37:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:37:29,830 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:37:29,832 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:37:30,585 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:37:30,728 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:37:30,728 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:37:30,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:37:30 BoogieIcfgContainer [2022-12-14 10:37:30,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:37:30,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:37:30,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:37:30,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:37:30,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:37:27" (1/3) ... [2022-12-14 10:37:30,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73208600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:37:30, skipping insertion in model container [2022-12-14 10:37:30,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:37:29" (2/3) ... [2022-12-14 10:37:30,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73208600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:37:30, skipping insertion in model container [2022-12-14 10:37:30,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:37:30" (3/3) ... [2022-12-14 10:37:30,737 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_c_str_harness.i [2022-12-14 10:37:30,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:37:30,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:37:30,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:37:30,795 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;@6a9a8dd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:37:30,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:37:30,799 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) [2022-12-14 10:37:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 10:37:30,807 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:37:30,808 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] [2022-12-14 10:37:30,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:37:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:37:30,813 INFO L85 PathProgramCache]: Analyzing trace with hash -875731628, now seen corresponding path program 1 times [2022-12-14 10:37:30,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:37:30,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168731386] [2022-12-14 10:37:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:37:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:37:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:37:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-14 10:37:40,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:37:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168731386] [2022-12-14 10:37:40,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168731386] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:37:40,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213068327] [2022-12-14 10:37:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:37:40,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:37:40,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:37:40,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:37:40,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56df9a1e-73c0-48b2-a684-1ea198b05f3d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:37:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:37:41,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 122 conjunts are in the unsatisfiable core [2022-12-14 10:37:41,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:37:41,714 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 [2022-12-14 10:37:41,722 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 [2022-12-14 10:37:47,267 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:37:47,268 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 [2022-12-14 10:37:47,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:37:47,295 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 [2022-12-14 10:37:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-14 10:37:47,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:37:49,414 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-12-14 10:44:14,427 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.