./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_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_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/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_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/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_00340b3a-c717-4ebf-b831-615cc8aacccf/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 f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af --- 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 23:37:16,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:37:16,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:37:16,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:37:16,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:37:16,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:37:16,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:37:16,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:37:16,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:37:16,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:37:16,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:37:16,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:37:16,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:37:16,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:37:16,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:37:16,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:37:16,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:37:16,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:37:16,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:37:16,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:37:16,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:37:16,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:37:16,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:37:16,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:37:16,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:37:16,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:37:16,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:37:16,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:37:16,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:37:16,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:37:16,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:37:16,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:37:16,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:37:16,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:37:16,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:37:16,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:37:16,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:37:16,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:37:16,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:37:16,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:37:16,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:37:16,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:37:16,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:37:16,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:37:16,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:37:16,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:37:16,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:37:16,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:37:16,916 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:37:16,917 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:37:16,917 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:37:16,917 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:37:16,918 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:37:16,918 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:37:16,918 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:37:16,919 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:37:16,919 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:37:16,919 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:37:16,920 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:37:16,920 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:37:16,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:37:16,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:37:16,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:37:16,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:37:16,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:37:16,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:37:16,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:37:16,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:37:16,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:37:16,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:37:16,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:37:16,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:37:16,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:37:16,925 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:37:16,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:37:16,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:37:16,926 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:37:16,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:37:16,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:37:16,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:37:16,928 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_00340b3a-c717-4ebf-b831-615cc8aacccf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2022-11-25 23:37:17,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:37:17,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:37:17,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:37:17,261 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:37:17,261 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:37:17,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2022-11-25 23:37:20,531 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:37:21,168 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:37:21,168 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2022-11-25 23:37:21,205 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/data/79781a9da/dd4eecb612fc4b24a4505b4eb5ee53b5/FLAG6de1819a5 [2022-11-25 23:37:21,224 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/data/79781a9da/dd4eecb612fc4b24a4505b4eb5ee53b5 [2022-11-25 23:37:21,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:37:21,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:37:21,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:37:21,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:37:21,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:37:21,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:37:21" (1/1) ... [2022-11-25 23:37:21,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e23cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:21, skipping insertion in model container [2022-11-25 23:37:21,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:37:21" (1/1) ... [2022-11-25 23:37:21,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:37:21,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:37:21,630 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_00340b3a-c717-4ebf-b831-615cc8aacccf/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2022-11-25 23:37:21,640 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_00340b3a-c717-4ebf-b831-615cc8aacccf/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2022-11-25 23:37:22,932 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:22,933 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:22,934 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:22,935 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:22,936 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:22,949 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:22,950 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:22,952 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:22,953 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,053 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:37:23,053 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:37:23,054 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:37:23,059 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:37:23,062 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:37:23,062 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:37:23,409 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:37:23,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:37:23,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:37:23,419 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:37:23,422 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:37:23,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:37:23,432 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:37:23,433 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:37:23,436 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:37:23,437 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:37:23,437 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:37:23,609 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:37:23,631 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:37:23,649 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:37:23,660 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:37:23,695 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,696 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,750 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:37:23,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:37:23,799 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:37:23,812 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_00340b3a-c717-4ebf-b831-615cc8aacccf/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2022-11-25 23:37:23,813 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_00340b3a-c717-4ebf-b831-615cc8aacccf/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2022-11-25 23:37:23,847 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,848 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,848 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,849 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,850 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,859 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,860 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,861 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,861 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:23,867 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:37:23,868 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:37:23,868 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:37:23,884 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:37:23,885 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:37:23,886 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:37:23,925 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:37:23,925 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:37:23,926 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:37:23,927 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:37:23,928 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:37:23,928 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:37:23,929 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:37:23,929 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:37:23,930 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:37:23,932 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:37:23,933 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:37:23,980 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:37:23,998 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:37:24,021 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:37:24,038 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:37:24,086 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:24,087 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:37:24,205 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:37:24,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:37:24,413 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:37:24,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24 WrapperNode [2022-11-25 23:37:24,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:37:24,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:37:24,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:37:24,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:37:24,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,585 INFO L138 Inliner]: procedures = 691, calls = 2628, calls flagged for inlining = 63, calls inlined = 9, statements flattened = 858 [2022-11-25 23:37:24,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:37:24,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:37:24,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:37:24,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:37:24,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,683 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:37:24,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:37:24,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:37:24,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:37:24,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (1/1) ... [2022-11-25 23:37:24,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:37:24,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:37:24,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:37:24,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:37:24,827 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2022-11-25 23:37:24,827 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2022-11-25 23:37:24,828 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-25 23:37:24,828 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-25 23:37:24,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:37:24,829 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 23:37:24,830 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 23:37:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:37:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 23:37:24,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 23:37:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:37:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:37:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-25 23:37:24,831 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-25 23:37:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:37:24,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:37:24,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:37:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 23:37:24,833 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 23:37:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-25 23:37:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-25 23:37:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:37:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:37:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:37:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:37:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:37:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-25 23:37:24,836 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-25 23:37:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:37:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:37:25,196 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:37:25,197 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:37:26,557 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:37:26,806 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:37:26,806 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:37:26,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:37:26 BoogieIcfgContainer [2022-11-25 23:37:26,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:37:26,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:37:26,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:37:26,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:37:26,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:37:21" (1/3) ... [2022-11-25 23:37:26,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b6d661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:37:26, skipping insertion in model container [2022-11-25 23:37:26,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:37:24" (2/3) ... [2022-11-25 23:37:26,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b6d661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:37:26, skipping insertion in model container [2022-11-25 23:37:26,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:37:26" (3/3) ... [2022-11-25 23:37:26,819 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_c_str_harness.i [2022-11-25 23:37:26,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:37:26,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:37:26,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:37:26,897 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;@6430c517, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:37:26,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:37:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 52 states have (on average 1.25) internal successors, (65), 54 states have internal predecessors, (65), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-25 23:37:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 23:37:26,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:26,919 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 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] [2022-11-25 23:37:26,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:37:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -185301531, now seen corresponding path program 1 times [2022-11-25 23:37:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:26,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847200823] [2022-11-25 23:37:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:26,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-25 23:37:32,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847200823] [2022-11-25 23:37:32,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847200823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:32,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:37:32,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 23:37:32,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613410813] [2022-11-25 23:37:32,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:32,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 23:37:32,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:32,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 23:37:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:37:32,741 INFO L87 Difference]: Start difference. First operand has 94 states, 52 states have (on average 1.25) internal successors, (65), 54 states have internal predecessors, (65), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-25 23:37:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:37:34,324 INFO L93 Difference]: Finished difference Result 174 states and 251 transitions. [2022-11-25 23:37:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:37:34,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 79 [2022-11-25 23:37:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:37:34,341 INFO L225 Difference]: With dead ends: 174 [2022-11-25 23:37:34,342 INFO L226 Difference]: Without dead ends: 128 [2022-11-25 23:37:34,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:37:34,350 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 107 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:37:34,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 930 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 23:37:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-25 23:37:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2022-11-25 23:37:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 59 states have internal predecessors, (69), 33 states have call successors, (33), 10 states have call predecessors, (33), 11 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2022-11-25 23:37:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 135 transitions. [2022-11-25 23:37:34,431 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 135 transitions. Word has length 79 [2022-11-25 23:37:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:37:34,432 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 135 transitions. [2022-11-25 23:37:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-25 23:37:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 135 transitions. [2022-11-25 23:37:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 23:37:34,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:37:34,436 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 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, 1] [2022-11-25 23:37:34,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:37:34,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:37:34,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:37:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1463624368, now seen corresponding path program 1 times [2022-11-25 23:37:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:37:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436044636] [2022-11-25 23:37:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:34,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:37:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-25 23:37:42,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:37:42,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436044636] [2022-11-25 23:37:42,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436044636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:37:42,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385756678] [2022-11-25 23:37:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:37:42,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:37:42,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:37:42,422 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:37:42,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00340b3a-c717-4ebf-b831-615cc8aacccf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:37:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:37:43,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-25 23:37:43,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:37:43,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 23:37:43,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 23:37:43,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 23:37:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 23:37:47,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:37:48,679 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-11-25 23:38:06,965 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.