./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V --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 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:24:52,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:24:52,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:24:52,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:24:52,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:24:52,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:24:52,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:24:52,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:24:52,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:24:52,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:24:52,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:24:52,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:24:52,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:24:52,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:24:52,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:24:52,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:24:52,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:24:52,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:24:52,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:24:52,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:24:52,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:24:52,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:24:52,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:24:52,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:24:52,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:24:52,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:24:52,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:24:52,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:24:52,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:24:52,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:24:52,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:24:52,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:24:52,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:24:52,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:24:52,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:24:52,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:24:52,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:24:52,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:24:52,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:24:52,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:24:52,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:24:52,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:24:52,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:24:52,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:24:52,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:24:52,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:24:52,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:24:52,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:24:52,585 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:24:52,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:24:52,586 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:24:52,586 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:24:52,586 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:24:52,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:24:52,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:24:52,587 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:24:52,587 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:24:52,588 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:24:52,588 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:24:52,588 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:24:52,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:24:52,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:24:52,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:24:52,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:24:52,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:24:52,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:24:52,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:24:52,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:24:52,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:24:52,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:24:52,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:24:52,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:24:52,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:24:52,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:24:52,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:24:52,592 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:24:52,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:24:52,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:24:52,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:24:52,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:24:52,593 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_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2021-11-23 03:24:52,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:24:52,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:24:52,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:24:52,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:24:52,898 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:24:52,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-23 03:24:52,986 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/data/6db0d840d/770e3e7175fc4f2199d1f676c45f9233/FLAGd7590d339 [2021-11-23 03:24:53,792 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:24:53,797 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-23 03:24:53,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/data/6db0d840d/770e3e7175fc4f2199d1f676c45f9233/FLAGd7590d339 [2021-11-23 03:24:54,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/data/6db0d840d/770e3e7175fc4f2199d1f676c45f9233 [2021-11-23 03:24:54,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:24:54,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:24:54,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:24:54,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:24:54,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:24:54,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:54" (1/1) ... [2021-11-23 03:24:54,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143caabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:54, skipping insertion in model container [2021-11-23 03:24:54,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:24:54" (1/1) ... [2021-11-23 03:24:54,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:24:54,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:24:54,792 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_bf067104-d43f-4369-a7bc-01cf58fa781b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2021-11-23 03:24:54,802 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_bf067104-d43f-4369-a7bc-01cf58fa781b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2021-11-23 03:24:56,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,090 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,093 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,094 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,563 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:24:56,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:24:56,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:24:56,567 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:24:56,569 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:24:56,570 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:24:56,571 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:24:56,572 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:24:56,572 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:24:56,573 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:24:56,787 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:24:56,815 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,815 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,964 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:56,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:24:57,131 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:24:57,164 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_bf067104-d43f-4369-a7bc-01cf58fa781b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2021-11-23 03:24:57,165 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_bf067104-d43f-4369-a7bc-01cf58fa781b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2021-11-23 03:24:57,246 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,253 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,256 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,279 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,342 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:24:57,343 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:24:57,344 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:24:57,345 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:24:57,346 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:24:57,346 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:24:57,347 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:24:57,348 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:24:57,349 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:24:57,349 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:24:57,392 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:24:57,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:24:57,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:24:57,778 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:24:57,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57 WrapperNode [2021-11-23 03:24:57,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:24:57,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:24:57,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:24:57,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:24:57,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:57,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:58,065 INFO L137 Inliner]: procedures = 691, calls = 2646, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 959 [2021-11-23 03:24:58,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:24:58,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:24:58,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:24:58,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:24:58,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:58,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:58,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:58,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:58,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:58,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:58,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:58,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:24:58,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:24:58,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:24:58,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:24:58,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (1/1) ... [2021-11-23 03:24:58,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:24:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:24:58,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:24:58,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:24:58,333 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-23 03:24:58,333 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-23 03:24:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-23 03:24:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-23 03:24:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:24:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:24:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:24:58,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:24:58,336 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-23 03:24:58,336 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-23 03:24:58,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:24:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:24:58,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:24:58,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:24:58,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:24:58,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:24:58,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:24:58,338 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:24:58,338 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:24:58,339 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:24:58,339 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:24:58,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:24:58,340 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-23 03:24:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-23 03:24:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:24:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:24:58,341 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-23 03:24:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-23 03:24:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-23 03:24:58,342 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-23 03:24:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-23 03:24:58,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-23 03:24:58,342 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-23 03:24:58,342 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-23 03:24:58,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:24:58,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:24:58,713 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:24:58,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:25:00,327 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:25:00,622 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:25:00,622 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:25:00,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:00 BoogieIcfgContainer [2021-11-23 03:25:00,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:25:00,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:25:00,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:25:00,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:25:00,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:24:54" (1/3) ... [2021-11-23 03:25:00,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b00f481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:00, skipping insertion in model container [2021-11-23 03:25:00,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:24:57" (2/3) ... [2021-11-23 03:25:00,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b00f481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:25:00, skipping insertion in model container [2021-11-23 03:25:00,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:25:00" (3/3) ... [2021-11-23 03:25:00,638 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2021-11-23 03:25:00,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:25:00,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:25:00,712 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:25:00,731 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 [2021-11-23 03:25:00,733 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:25:00,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-23 03:25:00,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 03:25:00,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:25:00,767 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 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] [2021-11-23 03:25:00,768 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:25:00,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:25:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2063670608, now seen corresponding path program 1 times [2021-11-23 03:25:00,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:25:00,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288013685] [2021-11-23 03:25:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:00,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:25:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-23 03:25:04,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:25:04,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288013685] [2021-11-23 03:25:04,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288013685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:25:04,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472950337] [2021-11-23 03:25:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:25:04,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:25:04,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:25:04,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:25:04,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf067104-d43f-4369-a7bc-01cf58fa781b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:25:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:25:04,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-23 03:25:04,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:25:04,914 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 19 treesize of output 1 [2021-11-23 03:25:04,919 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 13 treesize of output 9 [2021-11-23 03:25:04,927 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 13 treesize of output 9 [2021-11-23 03:25:06,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:25:06,749 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:25:06,749 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 36 treesize of output 26 [2021-11-23 03:25:06,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:25:06,757 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 03:25:06,758 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 20 treesize of output 10 [2021-11-23 03:25:07,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-23 03:25:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:25:08,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:25:09,532 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2021-11-23 03:25:20,993 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.