./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/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_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P --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 0.2.1-dev-53f42b1 [2021-11-20 23:46:42,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:46:42,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:46:42,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:46:42,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:46:42,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:46:42,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:46:42,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:46:42,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:46:42,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:46:42,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:46:42,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:46:42,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:46:42,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:46:42,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:46:42,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:46:42,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:46:42,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:46:42,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:46:42,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:46:42,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:46:42,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:46:42,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:46:42,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:46:42,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:46:42,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:46:42,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:46:42,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:46:42,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:46:42,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:46:42,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:46:42,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:46:42,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:46:42,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:46:42,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:46:42,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:46:42,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:46:42,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:46:42,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:46:42,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:46:42,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:46:42,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:46:42,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:46:42,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:46:42,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:46:42,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:46:42,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:46:42,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:46:42,873 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:46:42,873 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:46:42,873 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:46:42,874 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:46:42,875 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:46:42,875 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:46:42,875 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:46:42,875 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:46:42,875 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:46:42,876 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:46:42,876 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:46:42,876 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:46:42,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:46:42,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:46:42,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:46:42,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:46:42,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:46:42,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:46:42,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:46:42,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:46:42,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:46:42,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:46:42,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:46:42,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:46:42,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:46:42,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:46:42,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:46:42,882 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:46:42,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:46:42,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:46:42,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:46:42,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:46:42,883 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_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e4ccc391c063e90fb229c8b3638d2f1089d6ba2ff288522cf06bf650b1be9e5 [2021-11-20 23:46:43,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:46:43,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:46:43,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:46:43,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:46:43,261 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:46:43,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-20 23:46:43,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/data/b209d57bc/d1d027f2c4594f10a0773c9ce14bef16/FLAG9d0acb9fa [2021-11-20 23:46:44,125 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:46:44,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i [2021-11-20 23:46:44,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/data/b209d57bc/d1d027f2c4594f10a0773c9ce14bef16/FLAG9d0acb9fa [2021-11-20 23:46:44,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/data/b209d57bc/d1d027f2c4594f10a0773c9ce14bef16 [2021-11-20 23:46:44,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:46:44,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:46:44,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:46:44,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:46:44,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:46:44,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:44" (1/1) ... [2021-11-20 23:46:44,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2622ec70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:44, skipping insertion in model container [2021-11-20 23:46:44,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:44" (1/1) ... [2021-11-20 23:46:44,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:46:44,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:46:44,680 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_ebec1c34-3350-4d10-95a6-979658aaf1b6/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-20 23:46:44,687 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_ebec1c34-3350-4d10-95a6-979658aaf1b6/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-20 23:46:45,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:45,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:45,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:45,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:45,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:45,731 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:45,732 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:45,734 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:45,734 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,211 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:46:46,212 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:46:46,218 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:46:46,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:46:46,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:46:46,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:46:46,222 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:46:46,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:46:46,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:46:46,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:46:46,507 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:46:46,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:46:46,827 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:46:46,841 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_ebec1c34-3350-4d10-95a6-979658aaf1b6/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4495,4508] [2021-11-20 23:46:46,854 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_ebec1c34-3350-4d10-95a6-979658aaf1b6/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness.i[4555,4568] [2021-11-20 23:46:46,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:46,960 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:46:46,961 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:46:46,962 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:46:46,963 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:46:46,964 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:46:46,964 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:46:46,965 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:46:46,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:46:46,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:46:46,967 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:46:46,988 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:46:47,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:47,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:46:47,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:46:47,406 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:46:47,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47 WrapperNode [2021-11-20 23:46:47,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:46:47,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:46:47,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:46:47,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:46:47,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,664 INFO L137 Inliner]: procedures = 691, calls = 2639, calls flagged for inlining = 64, calls inlined = 10, statements flattened = 904 [2021-11-20 23:46:47,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:46:47,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:46:47,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:46:47,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:46:47,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:46:47,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:46:47,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:46:47,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:46:47,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (1/1) ... [2021-11-20 23:46:47,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:46:47,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:46:47,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:46:47,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:46:47,846 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2021-11-20 23:46:47,846 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2021-11-20 23:46:47,847 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-20 23:46:47,847 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-20 23:46:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:46:47,848 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 23:46:47,849 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 23:46:47,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:46:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:46:47,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:46:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:46:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:46:47,850 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-20 23:46:47,851 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-20 23:46:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:46:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:46:47,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:46:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 23:46:47,851 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 23:46:47,851 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-20 23:46:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-20 23:46:47,852 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:46:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:46:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:46:47,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:46:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:46:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 23:46:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 23:46:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 23:46:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 23:46:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:46:47,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:46:48,171 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:46:48,172 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:46:49,513 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:46:49,695 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:46:49,695 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:46:49,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:49 BoogieIcfgContainer [2021-11-20 23:46:49,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:46:49,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:46:49,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:46:49,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:46:49,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:46:44" (1/3) ... [2021-11-20 23:46:49,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc1c2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:49, skipping insertion in model container [2021-11-20 23:46:49,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:47" (2/3) ... [2021-11-20 23:46:49,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc1c2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:49, skipping insertion in model container [2021-11-20 23:46:49,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:49" (3/3) ... [2021-11-20 23:46:49,708 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_c_str_harness.i [2021-11-20 23:46:49,714 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:46:49,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:46:49,775 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:46:49,794 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 [2021-11-20 23:46:49,794 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:46:49,817 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) [2021-11-20 23:46:49,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 23:46:49,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:49,829 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] [2021-11-20 23:46:49,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:46:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:49,836 INFO L85 PathProgramCache]: Analyzing trace with hash 485696375, now seen corresponding path program 1 times [2021-11-20 23:46:49,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:49,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922793450] [2021-11-20 23:46:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:49,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:53,814 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-20 23:46:53,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:53,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922793450] [2021-11-20 23:46:53,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922793450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:46:53,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7822304] [2021-11-20 23:46:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:53,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:46:53,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:46:53,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:46:53,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebec1c34-3350-4d10-95a6-979658aaf1b6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:46:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:54,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2655 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-20 23:46:54,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:46:55,291 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 [2021-11-20 23:46:55,300 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 18 treesize of output 14 [2021-11-20 23:47:05,253 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:47:05,254 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 6 case distinctions, treesize of input 98 treesize of output 82 [2021-11-20 23:47:05,296 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 23:47:05,297 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 102 treesize of output 102 [2021-11-20 23:47:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 16 proven. 59 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-20 23:47:05,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:47:07,906 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-20 23:55:11,351 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.