./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_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_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/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_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/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_4fc136e2-4959-4af2-863d-117b859d561b/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:12:06,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:12:06,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:12:06,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:12:06,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:12:06,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:12:06,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:12:06,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:12:06,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:12:06,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:12:06,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:12:06,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:12:06,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:12:06,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:12:06,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:12:06,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:12:06,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:12:06,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:12:06,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:12:06,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:12:06,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:12:06,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:12:06,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:12:06,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:12:06,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:12:06,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:12:06,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:12:06,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:12:06,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:12:06,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:12:06,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:12:06,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:12:06,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:12:06,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:12:06,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:12:06,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:12:06,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:12:06,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:12:06,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:12:06,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:12:06,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:12:06,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:12:06,831 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:12:06,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:12:06,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:12:06,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:12:06,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:12:06,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:12:06,833 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:12:06,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:12:06,833 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:12:06,833 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:12:06,834 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:12:06,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:12:06,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:12:06,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:12:06,834 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:12:06,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:12:06,835 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:12:06,835 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:12:06,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:12:06,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:12:06,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:12:06,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:12:06,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:12:06,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:12:06,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:12:06,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:12:06,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:12:06,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:12:06,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:12:06,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:12:06,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:12:06,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:12:06,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:12:06,839 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:12:06,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:12:06,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:12:06,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:12:06,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:12:06,840 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_4fc136e2-4959-4af2-863d-117b859d561b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-25 19:12:07,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:12:07,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:12:07,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:12:07,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:12:07,106 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:12:07,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-25 19:12:07,190 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/data/30a7a8cec/c7c41136daab43bf87056eccd0e0385a/FLAG9dfc56fe0 [2021-11-25 19:12:08,060 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:12:08,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-25 19:12:08,111 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/data/30a7a8cec/c7c41136daab43bf87056eccd0e0385a/FLAG9dfc56fe0 [2021-11-25 19:12:08,498 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/data/30a7a8cec/c7c41136daab43bf87056eccd0e0385a [2021-11-25 19:12:08,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:12:08,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:12:08,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:12:08,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:12:08,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:12:08,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:12:08" (1/1) ... [2021-11-25 19:12:08,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a79e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:08, skipping insertion in model container [2021-11-25 19:12:08,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:12:08" (1/1) ... [2021-11-25 19:12:08,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:12:08,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:12:08,951 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_4fc136e2-4959-4af2-863d-117b859d561b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-25 19:12:08,958 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_4fc136e2-4959-4af2-863d-117b859d561b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-25 19:12:09,917 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:09,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:09,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:09,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:09,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:09,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:09,954 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:09,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:09,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:10,429 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:12:10,431 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:12:10,432 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:12:10,434 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:12:10,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:12:10,444 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:12:10,445 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:12:10,446 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:12:10,450 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:12:10,452 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:12:10,693 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:12:10,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:10,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:10,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:12:11,020 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:12:11,048 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_4fc136e2-4959-4af2-863d-117b859d561b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2021-11-25 19:12:11,049 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_4fc136e2-4959-4af2-863d-117b859d561b/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2021-11-25 19:12:11,093 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,093 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,094 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,094 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,096 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,110 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,164 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:12:11,165 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:12:11,165 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:12:11,166 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:12:11,167 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:12:11,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:12:11,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:12:11,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:12:11,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:12:11,170 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:12:11,195 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:12:11,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:12:11,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:12:11,575 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:12:11,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11 WrapperNode [2021-11-25 19:12:11,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:12:11,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:12:11,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:12:11,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:12:11,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,802 INFO L137 Inliner]: procedures = 691, calls = 2643, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 859 [2021-11-25 19:12:11,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:12:11,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:12:11,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:12:11,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:12:11,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:12:11,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:12:11,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:12:11,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:12:11,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (1/1) ... [2021-11-25 19:12:11,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:12:11,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:11,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:12:12,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:12:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-25 19:12:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-25 19:12:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-25 19:12:12,049 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-25 19:12:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:12:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 19:12:12,050 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 19:12:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2021-11-25 19:12:12,051 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2021-11-25 19:12:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:12:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-25 19:12:12,052 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-25 19:12:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:12:12,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:12:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:12:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:12:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:12:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-25 19:12:12,053 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-25 19:12:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:12:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:12:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 19:12:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 19:12:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:12:12,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:12:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-25 19:12:12,055 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-25 19:12:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:12:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:12:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:12:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 19:12:12,057 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 19:12:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-25 19:12:12,057 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-25 19:12:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 19:12:12,057 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 19:12:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:12:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:12:12,391 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:12:12,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:12:13,830 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:12:14,131 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:12:14,132 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:12:14,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:12:14 BoogieIcfgContainer [2021-11-25 19:12:14,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:12:14,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:12:14,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:12:14,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:12:14,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:12:08" (1/3) ... [2021-11-25 19:12:14,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5417b474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:12:14, skipping insertion in model container [2021-11-25 19:12:14,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:12:11" (2/3) ... [2021-11-25 19:12:14,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5417b474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:12:14, skipping insertion in model container [2021-11-25 19:12:14,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:12:14" (3/3) ... [2021-11-25 19:12:14,146 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2021-11-25 19:12:14,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:12:14,152 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:12:14,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:12:14,253 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 19:12:14,257 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:12:14,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-25 19:12:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 19:12:14,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:14,292 INFO L514 BasicCegarLoop]: trace histogram [7, 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] [2021-11-25 19:12:14,293 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:14,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash -963794593, now seen corresponding path program 1 times [2021-11-25 19:12:14,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:14,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944925840] [2021-11-25 19:12:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:14,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-25 19:12:16,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:16,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944925840] [2021-11-25 19:12:16,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944925840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:16,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189686692] [2021-11-25 19:12:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:16,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:12:16,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:12:16,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:12:16,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc136e2-4959-4af2-863d-117b859d561b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:12:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:17,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-25 19:12:17,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:12:17,871 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 [2021-11-25 19:12:17,880 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 [2021-11-25 19:12:17,892 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 19:12:20,905 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 17 treesize of output 9 [2021-11-25 19:12:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:12:20,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:22,438 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2021-11-25 19:12:46,872 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.