./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7 --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 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:35:49,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:35:49,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:35:49,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:35:49,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:35:49,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:35:49,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:35:49,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:35:49,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:35:49,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:35:49,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:35:49,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:35:49,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:35:49,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:35:49,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:35:49,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:35:49,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:35:49,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:35:49,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:35:49,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:35:49,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:35:49,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:35:49,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:35:49,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:35:49,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:35:49,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:35:49,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:35:49,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:35:49,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:35:49,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:35:49,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:35:49,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:35:49,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:35:49,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:35:49,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:35:49,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:35:49,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:35:49,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:35:49,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:35:49,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:35:49,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:35:49,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:35:49,493 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:35:49,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:35:49,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:35:49,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:35:49,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:35:49,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:35:49,495 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:35:49,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:35:49,495 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:35:49,496 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:35:49,496 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:35:49,496 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:35:49,496 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:35:49,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:35:49,497 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:35:49,497 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:35:49,497 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:35:49,498 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:35:49,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:35:49,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:35:49,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:35:49,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:35:49,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:35:49,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:35:49,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:35:49,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:35:49,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:35:49,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:35:49,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:35:49,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:35:49,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:35:49,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:35:49,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:35:49,502 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:35:49,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:35:49,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:35:49,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:35:49,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:35:49,503 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a [2021-11-25 19:35:49,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:35:49,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:35:49,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:35:49,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:35:49,746 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:35:49,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2021-11-25 19:35:49,832 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/data/68f23a509/618473c302ca43f0a7f459b357a20b12/FLAG51766da92 [2021-11-25 19:35:50,575 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:35:50,576 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2021-11-25 19:35:50,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/data/68f23a509/618473c302ca43f0a7f459b357a20b12/FLAG51766da92 [2021-11-25 19:35:50,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/data/68f23a509/618473c302ca43f0a7f459b357a20b12 [2021-11-25 19:35:50,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:35:50,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:35:50,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:35:50,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:35:50,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:35:50,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:35:50" (1/1) ... [2021-11-25 19:35:50,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6074991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:50, skipping insertion in model container [2021-11-25 19:35:50,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:35:50" (1/1) ... [2021-11-25 19:35:50,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:35:50,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:35:51,129 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2021-11-25 19:35:51,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2021-11-25 19:35:51,864 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,865 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,866 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,866 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,882 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,889 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,890 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:51,890 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,273 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:35:52,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:35:52,275 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:35:52,277 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:35:52,278 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:35:52,279 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:35:52,280 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:35:52,280 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:35:52,281 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:35:52,281 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:35:52,425 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:35:52,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:35:52,461 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:35:52,474 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2021-11-25 19:35:52,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2021-11-25 19:35:52,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,513 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,513 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,514 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,522 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,524 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:35:52,560 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:35:52,561 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:35:52,562 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:35:52,563 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:35:52,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:35:52,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:35:52,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:35:52,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:35:52,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:35:52,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:35:52,589 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:35:52,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:35:52,819 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:35:52,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52 WrapperNode [2021-11-25 19:35:52,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:35:52,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:35:52,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:35:52,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:35:52,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:52,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:52,959 INFO L137 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 152 [2021-11-25 19:35:52,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:35:52,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:35:52,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:35:52,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:35:52,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:52,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:52,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:52,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:52,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:52,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:53,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:53,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:35:53,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:35:53,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:35:53,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:35:53,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (1/1) ... [2021-11-25 19:35:53,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:35:53,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:35:53,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:35:53,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:35:53,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:35:53,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:35:53,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:35:53,103 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-25 19:35:53,104 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-25 19:35:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:35:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2021-11-25 19:35:53,104 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2021-11-25 19:35:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:35:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:35:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_insert_before [2021-11-25 19:35:53,105 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_insert_before [2021-11-25 19:35:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:35:53,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:35:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:35:53,105 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:35:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:35:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:35:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:35:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 19:35:53,106 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 19:35:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-25 19:35:53,107 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-25 19:35:53,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:35:53,391 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:35:53,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:35:53,779 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:35:53,922 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:35:53,922 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 19:35:53,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:35:53 BoogieIcfgContainer [2021-11-25 19:35:53,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:35:53,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:35:53,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:35:53,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:35:53,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:35:50" (1/3) ... [2021-11-25 19:35:53,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b801021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:35:53, skipping insertion in model container [2021-11-25 19:35:53,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:35:52" (2/3) ... [2021-11-25 19:35:53,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b801021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:35:53, skipping insertion in model container [2021-11-25 19:35:53,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:35:53" (3/3) ... [2021-11-25 19:35:53,935 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_front_harness.i [2021-11-25 19:35:53,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:35:53,945 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:35:54,006 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:35:54,020 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:35:54,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:35:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-25 19:35:54,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 19:35:54,064 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:54,066 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-25 19:35:54,067 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash -493936375, now seen corresponding path program 1 times [2021-11-25 19:35:54,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:54,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270586204] [2021-11-25 19:35:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:54,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:35:54,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:54,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270586204] [2021-11-25 19:35:54,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270586204] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:35:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742520090] [2021-11-25 19:35:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:54,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:35:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:35:54,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:35:54,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:35:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:55,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 19:35:55,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:35:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:35:55,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:35:55,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742520090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:55,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:35:55,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 9 [2021-11-25 19:35:55,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79687911] [2021-11-25 19:35:55,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:55,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:35:55,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:35:55,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:35:55,443 INFO L87 Difference]: Start difference. First operand has 75 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-25 19:35:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:55,767 INFO L93 Difference]: Finished difference Result 144 states and 209 transitions. [2021-11-25 19:35:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:35:55,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 43 [2021-11-25 19:35:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:55,782 INFO L225 Difference]: With dead ends: 144 [2021-11-25 19:35:55,782 INFO L226 Difference]: Without dead ends: 76 [2021-11-25 19:35:55,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:35:55,793 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 20 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:35:55,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 434 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:35:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-25 19:35:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2021-11-25 19:35:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-25 19:35:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-11-25 19:35:55,859 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 43 [2021-11-25 19:35:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:55,860 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-11-25 19:35:55,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-25 19:35:55,861 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-11-25 19:35:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-25 19:35:55,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:55,863 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-25 19:35:55,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:35:56,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:35:56,067 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash -528960891, now seen corresponding path program 1 times [2021-11-25 19:35:56,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:56,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331209359] [2021-11-25 19:35:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:56,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:35:56,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:56,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331209359] [2021-11-25 19:35:56,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331209359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:35:56,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65781934] [2021-11-25 19:35:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:56,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:35:56,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:35:56,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:35:56,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:35:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:56,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 19:35:56,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:35:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:35:56,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:35:56,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65781934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:56,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:35:56,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 10 [2021-11-25 19:35:56,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847046499] [2021-11-25 19:35:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:56,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:35:56,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:56,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:35:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:35:56,763 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-25 19:35:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:57,003 INFO L93 Difference]: Finished difference Result 145 states and 198 transitions. [2021-11-25 19:35:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 19:35:57,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 45 [2021-11-25 19:35:57,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:57,006 INFO L225 Difference]: With dead ends: 145 [2021-11-25 19:35:57,006 INFO L226 Difference]: Without dead ends: 79 [2021-11-25 19:35:57,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-25 19:35:57,016 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 22 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:35:57,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 453 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:35:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-25 19:35:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2021-11-25 19:35:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-25 19:35:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 103 transitions. [2021-11-25 19:35:57,036 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 103 transitions. Word has length 45 [2021-11-25 19:35:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:57,037 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 103 transitions. [2021-11-25 19:35:57,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-25 19:35:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 103 transitions. [2021-11-25 19:35:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:35:57,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:35:57,039 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-25 19:35:57,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:35:57,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-25 19:35:57,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:35:57,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:35:57,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1886202449, now seen corresponding path program 1 times [2021-11-25 19:35:57,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:35:57,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679133857] [2021-11-25 19:35:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:35:57,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:35:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:35:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:35:57,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:35:57,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679133857] [2021-11-25 19:35:57,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679133857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:57,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:35:57,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:35:57,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677619800] [2021-11-25 19:35:57,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:57,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:35:57,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:57,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:35:57,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:35:57,493 INFO L87 Difference]: Start difference. First operand 76 states and 103 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:35:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:35:57,576 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2021-11-25 19:35:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:35:57,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 47 [2021-11-25 19:35:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:35:57,579 INFO L225 Difference]: With dead ends: 99 [2021-11-25 19:35:57,580 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:35:57,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:35:57,582 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:35:57,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 80 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:35:57,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:35:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:35:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:35:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:35:57,584 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-11-25 19:35:57,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:35:57,584 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:35:57,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:35:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:35:57,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:35:57,592 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:35:57,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:35:57,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:35:57,696 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_node_next_is_validEXIT(lines 4715 4719) no Hoare annotation was computed. [2021-11-25 19:35:57,696 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_node_next_is_validENTRY(lines 4715 4719) the Hoare annotation is: true [2021-11-25 19:35:57,697 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_node_prev_is_validEXIT(lines 4726 4730) no Hoare annotation was computed. [2021-11-25 19:35:57,697 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_node_prev_is_validENTRY(lines 4726 4730) the Hoare annotation is: true [2021-11-25 19:35:57,697 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-11-25 19:35:57,697 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-11-25 19:35:57,697 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-11-25 19:35:57,698 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-11-25 19:35:57,698 INFO L861 garLoopResultBuilder]: At program point L4923(line 4923) the Hoare annotation is: true [2021-11-25 19:35:57,698 INFO L861 garLoopResultBuilder]: At program point L4922(line 4922) the Hoare annotation is: true [2021-11-25 19:35:57,698 INFO L858 garLoopResultBuilder]: For program point L4923-1(line 4923) no Hoare annotation was computed. [2021-11-25 19:35:57,698 INFO L861 garLoopResultBuilder]: At program point L4920-1(line 4920) the Hoare annotation is: true [2021-11-25 19:35:57,699 INFO L858 garLoopResultBuilder]: For program point L4921-2(line 4921) no Hoare annotation was computed. [2021-11-25 19:35:57,699 INFO L858 garLoopResultBuilder]: For program point L4920-2(line 4920) no Hoare annotation was computed. [2021-11-25 19:35:57,699 INFO L861 garLoopResultBuilder]: At program point L4921(line 4921) the Hoare annotation is: true [2021-11-25 19:35:57,699 INFO L861 garLoopResultBuilder]: At program point L4922-1(line 4922) the Hoare annotation is: true [2021-11-25 19:35:57,699 INFO L861 garLoopResultBuilder]: At program point L4920(line 4920) the Hoare annotation is: true [2021-11-25 19:35:57,700 INFO L861 garLoopResultBuilder]: At program point L4921-1(line 4921) the Hoare annotation is: true [2021-11-25 19:35:57,700 INFO L858 garLoopResultBuilder]: For program point L4922-2(line 4922) no Hoare annotation was computed. [2021-11-25 19:35:57,700 INFO L861 garLoopResultBuilder]: At program point L4912-1(line 4912) the Hoare annotation is: true [2021-11-25 19:35:57,700 INFO L858 garLoopResultBuilder]: For program point L4912-2(line 4912) no Hoare annotation was computed. [2021-11-25 19:35:57,700 INFO L861 garLoopResultBuilder]: At program point L4913(lines 4913 4915) the Hoare annotation is: true [2021-11-25 19:35:57,700 INFO L861 garLoopResultBuilder]: At program point L4912(line 4912) the Hoare annotation is: true [2021-11-25 19:35:57,701 INFO L858 garLoopResultBuilder]: For program point L4913-1(lines 4913 4915) no Hoare annotation was computed. [2021-11-25 19:35:57,701 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_insert_beforeENTRY(lines 4909 4924) the Hoare annotation is: true [2021-11-25 19:35:57,701 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_insert_beforeEXIT(lines 4909 4924) no Hoare annotation was computed. [2021-11-25 19:35:57,701 INFO L854 garLoopResultBuilder]: At program point L4990(line 4990) the Hoare annotation is: (and (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0)) (< 1 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_~list#1.base| 0))) [2021-11-25 19:35:57,701 INFO L858 garLoopResultBuilder]: For program point L4994-1(line 4994) no Hoare annotation was computed. [2021-11-25 19:35:57,702 INFO L854 garLoopResultBuilder]: At program point L4990-1(line 4990) the Hoare annotation is: (and (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (< 1 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (= |ULTIMATE.start_aws_linked_list_push_front_#t~ret402#1| 0)) [2021-11-25 19:35:57,702 INFO L858 garLoopResultBuilder]: For program point L7389-1(line 7389) no Hoare annotation was computed. [2021-11-25 19:35:57,702 INFO L858 garLoopResultBuilder]: For program point L4990-2(line 4990) no Hoare annotation was computed. [2021-11-25 19:35:57,702 INFO L854 garLoopResultBuilder]: At program point L7389(line 7389) the Hoare annotation is: false [2021-11-25 19:35:57,702 INFO L854 garLoopResultBuilder]: At program point L4995(line 4995) the Hoare annotation is: false [2021-11-25 19:35:57,703 INFO L854 garLoopResultBuilder]: At program point L4995-1(line 4995) the Hoare annotation is: false [2021-11-25 19:35:57,703 INFO L854 garLoopResultBuilder]: At program point L4991(lines 4991 4993) the Hoare annotation is: false [2021-11-25 19:35:57,703 INFO L854 garLoopResultBuilder]: At program point L7390(line 7390) the Hoare annotation is: false [2021-11-25 19:35:57,703 INFO L858 garLoopResultBuilder]: For program point L4991-1(lines 4991 4993) no Hoare annotation was computed. [2021-11-25 19:35:57,703 INFO L858 garLoopResultBuilder]: For program point L4995-2(line 4995) no Hoare annotation was computed. [2021-11-25 19:35:57,703 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:35:57,704 INFO L854 garLoopResultBuilder]: At program point L7386(line 7386) the Hoare annotation is: false [2021-11-25 19:35:57,704 INFO L854 garLoopResultBuilder]: At program point L7390-1(line 7390) the Hoare annotation is: (and (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (< 1 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|)) [2021-11-25 19:35:57,704 INFO L858 garLoopResultBuilder]: For program point L7386-2(line 7386) no Hoare annotation was computed. [2021-11-25 19:35:57,704 INFO L854 garLoopResultBuilder]: At program point L7386-1(line 7386) the Hoare annotation is: false [2021-11-25 19:35:57,704 INFO L854 garLoopResultBuilder]: At program point L6767-3(lines 6767 6774) the Hoare annotation is: (and (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0))) [2021-11-25 19:35:57,705 INFO L858 garLoopResultBuilder]: For program point L6755-1(line 6755) no Hoare annotation was computed. [2021-11-25 19:35:57,705 INFO L858 garLoopResultBuilder]: For program point L4996-1(line 4996) no Hoare annotation was computed. [2021-11-25 19:35:57,705 INFO L854 garLoopResultBuilder]: At program point L6755(line 6755) the Hoare annotation is: (and (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0))) [2021-11-25 19:35:57,705 INFO L854 garLoopResultBuilder]: At program point L4996(line 4996) the Hoare annotation is: false [2021-11-25 19:35:57,705 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:35:57,706 INFO L854 garLoopResultBuilder]: At program point L7387-1(line 7387) the Hoare annotation is: false [2021-11-25 19:35:57,706 INFO L854 garLoopResultBuilder]: At program point L7387(line 7387) the Hoare annotation is: false [2021-11-25 19:35:57,706 INFO L858 garLoopResultBuilder]: For program point L7387-2(line 7387) no Hoare annotation was computed. [2021-11-25 19:35:57,706 INFO L858 garLoopResultBuilder]: For program point L6756-1(line 6756) no Hoare annotation was computed. [2021-11-25 19:35:57,706 INFO L854 garLoopResultBuilder]: At program point L6756(line 6756) the Hoare annotation is: (and (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|) (not (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.base| 0))) [2021-11-25 19:35:57,707 INFO L858 garLoopResultBuilder]: For program point L7388-2(line 7388) no Hoare annotation was computed. [2021-11-25 19:35:57,707 INFO L854 garLoopResultBuilder]: At program point L7388-1(line 7388) the Hoare annotation is: false [2021-11-25 19:35:57,707 INFO L854 garLoopResultBuilder]: At program point L7388(line 7388) the Hoare annotation is: false [2021-11-25 19:35:57,707 INFO L854 garLoopResultBuilder]: At program point L4994(line 4994) the Hoare annotation is: false [2021-11-25 19:35:57,707 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-11-25 19:35:57,707 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-11-25 19:35:57,708 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-11-25 19:35:57,708 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-11-25 19:35:57,708 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-11-25 19:35:57,708 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-11-25 19:35:57,708 INFO L858 garLoopResultBuilder]: For program point L4734(lines 4734 4738) no Hoare annotation was computed. [2021-11-25 19:35:57,709 INFO L858 garLoopResultBuilder]: For program point L4751(lines 4751 4761) no Hoare annotation was computed. [2021-11-25 19:35:57,709 INFO L854 garLoopResultBuilder]: At program point L4764(lines 4731 4765) the Hoare annotation is: (or (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base|) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_~list#1.base|)) (= |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_#res#1| 0)) [2021-11-25 19:35:57,709 INFO L858 garLoopResultBuilder]: For program point L4756-1(lines 4756 4761) no Hoare annotation was computed. [2021-11-25 19:35:57,709 INFO L854 garLoopResultBuilder]: At program point L4756(line 4756) the Hoare annotation is: (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base|) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_~list#1.base|)) [2021-11-25 19:35:57,709 INFO L858 garLoopResultBuilder]: For program point L4694-11(lines 4694 4704) no Hoare annotation was computed. [2021-11-25 19:35:57,710 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_is_validEXIT(lines 4691 4708) no Hoare annotation was computed. [2021-11-25 19:35:57,710 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_is_validENTRY(lines 4691 4708) the Hoare annotation is: true [2021-11-25 19:35:57,710 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_is_validFINAL(lines 4691 4708) no Hoare annotation was computed. [2021-11-25 19:35:57,710 INFO L858 garLoopResultBuilder]: For program point L4750-3(lines 4750 4763) no Hoare annotation was computed. [2021-11-25 19:35:57,710 INFO L854 garLoopResultBuilder]: At program point L4750-2(lines 4750 4763) the Hoare annotation is: (and (= |aws_linked_list_is_valid_#in~list#1.base| 0) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~list#1.base|) (= |aws_linked_list_is_valid_#in~list#1.base| |aws_linked_list_is_valid_~list#1.base|)) [2021-11-25 19:35:57,714 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-25 19:35:57,715 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:35:57,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:35:57 BoogieIcfgContainer [2021-11-25 19:35:57,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:35:57,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:35:57,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:35:57,732 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:35:57,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:35:53" (3/4) ... [2021-11-25 19:35:57,735 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:35:57,740 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_next_is_valid [2021-11-25 19:35:57,740 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-11-25 19:35:57,741 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_prev_is_valid [2021-11-25 19:35:57,741 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_insert_before [2021-11-25 19:35:57,741 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-25 19:35:57,741 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-25 19:35:57,741 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_is_valid [2021-11-25 19:35:57,749 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2021-11-25 19:35:57,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-25 19:35:57,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-25 19:35:57,751 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:35:57,778 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((list == 0 && list == list) && list == list) || \result == 0 [2021-11-25 19:35:57,820 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:35:57,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:35:57,821 INFO L158 Benchmark]: Toolchain (without parser) took 7121.28ms. Allocated memory was 100.7MB in the beginning and 176.2MB in the end (delta: 75.5MB). Free memory was 59.5MB in the beginning and 98.8MB in the end (delta: -39.3MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-11-25 19:35:57,821 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory was 55.7MB in the beginning and 55.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:35:57,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2118.76ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 59.2MB in the beginning and 80.4MB in the end (delta: -21.2MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2021-11-25 19:35:57,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 139.58ms. Allocated memory is still 125.8MB. Free memory was 80.4MB in the beginning and 74.8MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 19:35:57,822 INFO L158 Benchmark]: Boogie Preprocessor took 46.52ms. Allocated memory is still 125.8MB. Free memory was 74.8MB in the beginning and 71.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:35:57,823 INFO L158 Benchmark]: RCFGBuilder took 916.82ms. Allocated memory is still 125.8MB. Free memory was 71.3MB in the beginning and 76.8MB in the end (delta: -5.5MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2021-11-25 19:35:57,823 INFO L158 Benchmark]: TraceAbstraction took 3804.53ms. Allocated memory was 125.8MB in the beginning and 176.2MB in the end (delta: 50.3MB). Free memory was 76.0MB in the beginning and 107.2MB in the end (delta: -31.2MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2021-11-25 19:35:57,823 INFO L158 Benchmark]: Witness Printer took 88.77ms. Allocated memory is still 176.2MB. Free memory was 107.2MB in the beginning and 98.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:35:57,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory was 55.7MB in the beginning and 55.6MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2118.76ms. Allocated memory was 100.7MB in the beginning and 125.8MB in the end (delta: 25.2MB). Free memory was 59.2MB in the beginning and 80.4MB in the end (delta: -21.2MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 139.58ms. Allocated memory is still 125.8MB. Free memory was 80.4MB in the beginning and 74.8MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.52ms. Allocated memory is still 125.8MB. Free memory was 74.8MB in the beginning and 71.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 916.82ms. Allocated memory is still 125.8MB. Free memory was 71.3MB in the beginning and 76.8MB in the end (delta: -5.5MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3804.53ms. Allocated memory was 125.8MB in the beginning and 176.2MB in the end (delta: 50.3MB). Free memory was 76.0MB in the beginning and 107.2MB in the end (delta: -31.2MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Witness Printer took 88.77ms. Allocated memory is still 176.2MB. Free memory was 107.2MB in the beginning and 98.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 967 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 899 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 302 IncrementalHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 186 mSDtfsCounter, 302 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=2, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 149 PreInvPairs, 154 NumberOfFragments, 120 HoareAnnotationTreeSize, 149 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 39 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1231 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 104/110 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4750]: Loop Invariant Derived loop invariant: (list == 0 && list == list) && list == list - InvariantResult [Line: 4731]: Loop Invariant Derived loop invariant: ((list == 0 && list == list) && list == list) || \result == 0 - InvariantResult [Line: 7390]: Loop Invariant Derived loop invariant: 1 < to_add && 1 < node - InvariantResult [Line: 6767]: Loop Invariant Derived loop invariant: 1 < to_add && !(list == 0) RESULT: Ultimate proved your program to be correct! [2021-11-25 19:35:57,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a043493-8688-40a7-92c5-901190d0912c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE