./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/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_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/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_5d2707f4-43bf-4c93-9cd9-6417ad565083/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 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:42:10,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:42:10,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:42:10,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:42:10,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:42:10,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:42:10,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:42:10,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:42:10,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:42:10,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:42:10,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:42:10,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:42:10,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:42:10,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:42:10,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:42:10,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:42:10,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:42:10,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:42:10,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:42:10,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:42:10,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:42:10,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:42:10,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:42:10,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:42:10,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:42:10,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:42:10,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:42:10,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:42:10,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:42:10,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:42:10,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:42:10,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:42:10,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:42:10,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:42:10,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:42:10,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:42:10,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:42:10,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:42:10,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:42:10,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:42:10,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:42:10,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:42:10,450 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:42:10,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:42:10,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:42:10,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:42:10,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:42:10,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:42:10,453 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:42:10,454 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:42:10,454 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:42:10,454 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:42:10,455 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:42:10,455 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:42:10,456 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:42:10,456 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:42:10,456 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:42:10,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:42:10,457 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:42:10,457 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:42:10,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:42:10,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:42:10,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:42:10,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:42:10,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:42:10,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:42:10,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:42:10,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:42:10,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:42:10,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:42:10,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:42:10,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:42:10,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:42:10,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:42:10,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:42:10,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:42:10,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:42:10,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:42:10,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:42:10,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:42:10,463 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_5d2707f4-43bf-4c93-9cd9-6417ad565083/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2021-11-25 19:42:10,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:42:10,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:42:10,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:42:10,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:42:10,771 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:42:10,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-25 19:42:10,848 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/data/c4221ba19/7544db0a9a164c1d91d0f0f40b5a5bd2/FLAG8f20e84ce [2021-11-25 19:42:11,710 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:42:11,711 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-25 19:42:11,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/data/c4221ba19/7544db0a9a164c1d91d0f0f40b5a5bd2/FLAG8f20e84ce [2021-11-25 19:42:12,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/data/c4221ba19/7544db0a9a164c1d91d0f0f40b5a5bd2 [2021-11-25 19:42:12,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:42:12,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:42:12,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:42:12,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:42:12,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:42:12,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:42:12" (1/1) ... [2021-11-25 19:42:12,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed8f9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:12, skipping insertion in model container [2021-11-25 19:42:12,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:42:12" (1/1) ... [2021-11-25 19:42:12,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:42:12,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:42:12,715 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_5d2707f4-43bf-4c93-9cd9-6417ad565083/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-25 19:42:12,723 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_5d2707f4-43bf-4c93-9cd9-6417ad565083/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-25 19:42:13,786 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:13,787 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:13,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:13,789 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:13,790 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:13,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:13,820 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:13,822 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:13,823 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,259 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:42:14,260 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:42:14,261 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:42:14,262 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:42:14,264 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:42:14,265 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:42:14,265 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:42:14,266 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:42:14,267 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:42:14,267 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:42:14,453 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:42:14,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:42:14,789 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:42:14,802 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_5d2707f4-43bf-4c93-9cd9-6417ad565083/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-25 19:42:14,803 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_5d2707f4-43bf-4c93-9cd9-6417ad565083/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-25 19:42:14,836 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,836 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,846 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:14,876 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:42:14,877 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:42:14,878 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:42:14,878 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:42:14,879 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:42:14,880 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:42:14,880 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:42:14,880 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:42:14,881 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:42:14,881 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:42:14,901 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:42:15,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:15,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:42:15,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:42:15,219 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:42:15,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15 WrapperNode [2021-11-25 19:42:15,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:42:15,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:42:15,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:42:15,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:42:15,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,423 INFO L137 Inliner]: procedures = 691, calls = 2639, calls flagged for inlining = 64, calls inlined = 10, statements flattened = 904 [2021-11-25 19:42:15,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:42:15,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:42:15,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:42:15,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:42:15,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:42:15,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:42:15,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:42:15,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:42:15,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (1/1) ... [2021-11-25 19:42:15,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:42:15,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:15,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:42:15,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:42:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2021-11-25 19:42:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2021-11-25 19:42:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-25 19:42:15,638 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-25 19:42:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:42:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 19:42:15,638 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 19:42:15,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:42:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:42:15,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:42:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:42:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:42:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-25 19:42:15,639 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-25 19:42:15,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:42:15,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:42:15,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:42:15,640 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 19:42:15,640 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 19:42:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-25 19:42:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-25 19:42:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:42:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:42:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:42:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 19:42:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 19:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 19:42:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 19:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:42:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:42:15,867 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:42:15,869 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:42:17,508 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:42:17,722 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:42:17,722 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:42:17,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:42:17 BoogieIcfgContainer [2021-11-25 19:42:17,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:42:17,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:42:17,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:42:17,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:42:17,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:42:12" (1/3) ... [2021-11-25 19:42:17,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@998986b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:42:17, skipping insertion in model container [2021-11-25 19:42:17,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:15" (2/3) ... [2021-11-25 19:42:17,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@998986b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:42:17, skipping insertion in model container [2021-11-25 19:42:17,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:42:17" (3/3) ... [2021-11-25 19:42:17,735 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_c_str_harness.i [2021-11-25 19:42:17,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:42:17,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:42:17,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:42:17,818 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 19:42:17,818 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:42:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 62 states have internal predecessors, (74), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-25 19:42:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 19:42:17,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:17,855 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:17,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:17,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:17,861 INFO L85 PathProgramCache]: Analyzing trace with hash 485696375, now seen corresponding path program 1 times [2021-11-25 19:42:17,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:17,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617087343] [2021-11-25 19:42:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:17,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-25 19:42:21,862 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:21,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617087343] [2021-11-25 19:42:21,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617087343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:42:21,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782626937] [2021-11-25 19:42:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:21,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:21,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:21,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:42:21,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2707f4-43bf-4c93-9cd9-6417ad565083/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:42:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:22,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-25 19:42:22,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:42:23,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:42:23,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 19:42:34,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:42:34,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 97 treesize of output 73 [2021-11-25 19:42:34,254 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:42:34,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 19:42:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 19:42:34,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:42:36,834 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-25 19:50:02,103 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.