./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_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_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/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_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/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_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/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 f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 --- 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 04:53:39,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:53:39,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:53:39,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:53:39,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:53:39,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:53:39,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:53:39,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:53:39,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:53:39,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:53:39,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:53:39,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:53:39,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:53:39,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:53:39,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:53:39,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:53:39,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:53:39,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:53:39,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:53:39,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:53:39,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:53:39,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:53:39,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:53:39,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:53:39,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:53:39,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:53:39,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:53:39,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:53:39,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:53:39,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:53:39,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:53:39,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:53:39,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:53:39,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:53:39,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:53:39,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:53:39,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:53:39,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:53:39,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:53:39,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:53:39,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:53:39,900 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 04:53:39,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:53:39,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:53:39,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:53:39,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:53:39,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:53:39,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:53:39,922 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:53:39,922 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:53:39,923 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:53:39,923 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:53:39,923 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:53:39,923 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:53:39,923 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:53:39,923 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:53:39,924 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:53:39,924 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:53:39,924 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:53:39,924 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:53:39,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:53:39,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:53:39,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:53:39,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:53:39,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:53:39,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:53:39,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:53:39,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:53:39,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:53:39,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:53:39,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:53:39,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:53:39,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:53:39,927 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:53:39,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:53:39,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:53:39,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:53:39,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:53:39,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:53:39,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:53:39,928 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_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 [2022-12-14 04:53:40,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:53:40,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:53:40,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:53:40,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:53:40,131 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:53:40,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2022-12-14 04:53:42,784 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:53:43,057 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:53:43,057 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2022-12-14 04:53:43,073 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/data/58a451f3c/cb8bff78caf14363914c45a97d912643/FLAG71c7a9e75 [2022-12-14 04:53:43,083 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/data/58a451f3c/cb8bff78caf14363914c45a97d912643 [2022-12-14 04:53:43,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:53:43,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:53:43,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:53:43,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:53:43,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:53:43,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:53:43" (1/1) ... [2022-12-14 04:53:43,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763d8126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:43, skipping insertion in model container [2022-12-14 04:53:43,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:53:43" (1/1) ... [2022-12-14 04:53:43,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:53:43,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:53:43,309 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_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2022-12-14 04:53:43,315 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_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2022-12-14 04:53:43,863 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:53:43,867 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,868 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,868 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,868 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,869 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,887 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,887 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,889 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,890 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,891 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,892 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,892 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,893 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:43,948 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:53:43,949 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:53:43,950 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:53:43,954 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:53:43,956 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:53:43,957 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:53:44,142 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:53:44,143 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:53:44,144 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:53:44,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:53:44,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:53:44,146 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:53:44,147 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:53:44,147 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:53:44,148 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:53:44,148 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:53:44,148 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:53:44,248 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:53:44,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:53:44,278 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:53:44,287 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_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2022-12-14 04:53:44,288 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_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2022-12-14 04:53:44,315 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:53:44,317 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,318 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,318 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,318 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,319 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,324 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,325 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,326 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,326 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,327 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,327 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,328 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,328 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:53:44,333 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:53:44,333 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:53:44,334 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:53:44,337 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:53:44,338 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:53:44,338 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:53:44,355 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:53:44,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:53:44,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:53:44,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:53:44,358 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:53:44,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:53:44,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:53:44,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:53:44,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:53:44,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:53:44,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:53:44,377 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:53:44,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:53:44,525 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:53:44,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44 WrapperNode [2022-12-14 04:53:44,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:53:44,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:53:44,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:53:44,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:53:44,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,608 INFO L138 Inliner]: procedures = 679, calls = 1044, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 133 [2022-12-14 04:53:44,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:53:44,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:53:44,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:53:44,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:53:44,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:53:44,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:53:44,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:53:44,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:53:44,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (1/1) ... [2022-12-14 04:53:44,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:53:44,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:53:44,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:53:44,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:53:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_back [2022-12-14 04:53:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_back [2022-12-14 04:53:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:53:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 04:53:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 04:53:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-12-14 04:53:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-12-14 04:53:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:53:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-12-14 04:53:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-12-14 04:53:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:53:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:53:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:53:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:53:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-12-14 04:53:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-12-14 04:53:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 04:53:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 04:53:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:53:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:53:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 04:53:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 04:53:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 04:53:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-12-14 04:53:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-12-14 04:53:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:53:44,901 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:53:44,903 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:53:45,125 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:53:45,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:53:45,231 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 04:53:45,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:53:45 BoogieIcfgContainer [2022-12-14 04:53:45,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:53:45,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:53:45,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:53:45,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:53:45,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:53:43" (1/3) ... [2022-12-14 04:53:45,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3509cb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:53:45, skipping insertion in model container [2022-12-14 04:53:45,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:53:44" (2/3) ... [2022-12-14 04:53:45,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3509cb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:53:45, skipping insertion in model container [2022-12-14 04:53:45,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:53:45" (3/3) ... [2022-12-14 04:53:45,242 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_back_harness.i [2022-12-14 04:53:45,258 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:53:45,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:53:45,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:53:45,308 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;@744e35e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:53:45,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:53:45,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-14 04:53:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 04:53:45,318 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:53:45,318 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-12-14 04:53:45,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:53:45,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:53:45,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1804867593, now seen corresponding path program 1 times [2022-12-14 04:53:45,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:53:45,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085726105] [2022-12-14 04:53:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:53:45,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:53:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:53:45,832 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 04:53:45,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:53:45,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085726105] [2022-12-14 04:53:45,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085726105] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:53:45,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140035308] [2022-12-14 04:53:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:53:45,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:53:45,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:53:45,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:53:45,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:53:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:53:45,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-14 04:53:46,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:53:46,119 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 18 treesize of output 19 [2022-12-14 04:53:46,131 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 18 treesize of output 19 [2022-12-14 04:53:46,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:46,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:46,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:46,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2022-12-14 04:53:46,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:46,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:46,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:46,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2022-12-14 04:53:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 04:53:47,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 04:53:47,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140035308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:53:47,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 04:53:47,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2022-12-14 04:53:47,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749828030] [2022-12-14 04:53:47,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:53:47,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 04:53:47,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:53:47,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 04:53:47,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-14 04:53:47,864 INFO L87 Difference]: Start difference. First operand has 69 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 04:53:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:53:48,735 INFO L93 Difference]: Finished difference Result 188 states and 265 transitions. [2022-12-14 04:53:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 04:53:48,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 52 [2022-12-14 04:53:48,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:53:48,742 INFO L225 Difference]: With dead ends: 188 [2022-12-14 04:53:48,742 INFO L226 Difference]: Without dead ends: 127 [2022-12-14 04:53:48,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-12-14 04:53:48,747 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 80 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:53:48,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 347 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 04:53:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-14 04:53:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2022-12-14 04:53:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 65 states have internal predecessors, (76), 46 states have call successors, (46), 15 states have call predecessors, (46), 15 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-12-14 04:53:48,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2022-12-14 04:53:48,800 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 52 [2022-12-14 04:53:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:53:48,800 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2022-12-14 04:53:48,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-14 04:53:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2022-12-14 04:53:48,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 04:53:48,803 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:53:48,803 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-12-14 04:53:48,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:53:49,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:53:49,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:53:49,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:53:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1899649367, now seen corresponding path program 1 times [2022-12-14 04:53:49,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:53:49,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203273661] [2022-12-14 04:53:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:53:49,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:53:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:53:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 04:53:49,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:53:49,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203273661] [2022-12-14 04:53:49,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203273661] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:53:49,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930798522] [2022-12-14 04:53:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:53:49,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:53:49,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:53:49,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:53:49,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd6a8eb5-c11c-41fc-a868-f346683fcbd4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:53:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:53:49,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 95 conjunts are in the unsatisfiable core [2022-12-14 04:53:49,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:53:49,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 [2022-12-14 04:53:49,459 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 18 treesize of output 19 [2022-12-14 04:53:49,477 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 18 treesize of output 19 [2022-12-14 04:53:49,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:49,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:49,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 04:53:49,530 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 04:53:49,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-12-14 04:53:49,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 04:53:49,547 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 04:53:49,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-14 04:53:49,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:49,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:49,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-12-14 04:53:49,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-12-14 04:53:49,642 INFO L321 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2022-12-14 04:53:49,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 158 [2022-12-14 04:53:49,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:49,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:49,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 04:53:49,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 138 [2022-12-14 04:53:49,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 47 [2022-12-14 04:53:49,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-12-14 04:53:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 5 refuted. 2 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 04:53:52,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:53:57,059 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 16 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|)) (.cse2 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 16)) (.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse6 (+ 8 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (and (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse4) 0)) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (= (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse6) 0)) (or (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (not (= (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|) 0))) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|) 0)))) (or (not (= |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base| 0)) (not (= |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset| 0))) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse4) 0)) (let ((.cse9 (+ |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset| 24))) (or (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (not (= (select (select (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse9) 0))) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse9) 0))))) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse6) 0)))) is different from false [2022-12-14 04:53:57,472 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 04:53:57,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 380 treesize of output 457 [2022-12-14 04:53:57,901 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-12-14 04:53:57,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 119 [2022-12-14 04:53:58,359 INFO L321 Elim1Store]: treesize reduction 228, result has 28.5 percent of original size [2022-12-14 04:53:58,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 22 case distinctions, treesize of input 216 treesize of output 797 [2022-12-14 04:53:59,827 INFO L321 Elim1Store]: treesize reduction 80, result has 27.9 percent of original size [2022-12-14 04:53:59,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 226 [2022-12-14 04:54:00,209 INFO L321 Elim1Store]: treesize reduction 228, result has 28.5 percent of original size [2022-12-14 04:54:00,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 22 case distinctions, treesize of input 352 treesize of output 853 [2022-12-14 04:54:03,859 INFO L321 Elim1Store]: treesize reduction 225, result has 29.5 percent of original size [2022-12-14 04:54:03,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 22 case distinctions, treesize of input 216 treesize of output 800 [2022-12-14 04:54:06,236 INFO L321 Elim1Store]: treesize reduction 225, result has 29.5 percent of original size [2022-12-14 04:54:06,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 22 case distinctions, treesize of input 216 treesize of output 800 [2022-12-14 04:54:08,349 INFO L321 Elim1Store]: treesize reduction 504, result has 22.7 percent of original size [2022-12-14 04:54:08,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 40 case distinctions, treesize of input 852 treesize of output 2142 [2022-12-14 04:54:21,606 INFO L321 Elim1Store]: treesize reduction 690, result has 28.4 percent of original size [2022-12-14 04:54:21,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 45 case distinctions, treesize of input 3624 treesize of output 6169 [2022-12-14 04:55:03,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 04:55:04,174 INFO L321 Elim1Store]: treesize reduction 379, result has 32.4 percent of original size [2022-12-14 04:55:04,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 34 case distinctions, treesize of input 3074 treesize of output 4123 [2022-12-14 04:55:14,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-12-14 04:55:14,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6