./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/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_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/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_2f8af3f1-304e-413e-b662-e760424c6633/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_2f8af3f1-304e-413e-b662-e760424c6633/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 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:51:55,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:51:55,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:51:55,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:51:55,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:51:55,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:51:55,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:51:55,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:51:55,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:51:55,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:51:55,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:51:55,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:51:55,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:51:55,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:51:55,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:51:55,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:51:55,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:51:55,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:51:55,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:51:55,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:51:55,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:51:55,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:51:55,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:51:55,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:51:55,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:51:55,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:51:55,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:51:55,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:51:55,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:51:55,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:51:55,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:51:55,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:51:55,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:51:55,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:51:55,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:51:55,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:51:55,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:51:55,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:51:55,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:51:55,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:51:55,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:51:55,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:51:55,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:51:55,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:51:55,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:51:55,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:51:55,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:51:55,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:51:55,417 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:51:55,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:51:55,418 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:51:55,418 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:51:55,419 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:51:55,420 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:51:55,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:51:55,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:51:55,420 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:51:55,421 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:51:55,421 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:51:55,421 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:51:55,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:51:55,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:51:55,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:51:55,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:51:55,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:51:55,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:51:55,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:51:55,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:51:55,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:51:55,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:51:55,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:51:55,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:51:55,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:51:55,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:51:55,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:51:55,428 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:51:55,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:51:55,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:51:55,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:51:55,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:51:55,429 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_2f8af3f1-304e-413e-b662-e760424c6633/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2021-11-25 19:51:55,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:51:55,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:51:55,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:51:55,780 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:51:55,781 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:51:55,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-25 19:51:55,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/data/dfb95c222/75db14ff55e9477188d54ed952cdb5ae/FLAG60aec90d8 [2021-11-25 19:51:56,899 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:51:56,899 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2021-11-25 19:51:56,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/data/dfb95c222/75db14ff55e9477188d54ed952cdb5ae/FLAG60aec90d8 [2021-11-25 19:51:57,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/data/dfb95c222/75db14ff55e9477188d54ed952cdb5ae [2021-11-25 19:51:57,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:51:57,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:51:57,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:51:57,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:51:57,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:51:57,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:51:57" (1/1) ... [2021-11-25 19:51:57,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8e9171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:51:57, skipping insertion in model container [2021-11-25 19:51:57,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:51:57" (1/1) ... [2021-11-25 19:51:57,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:51:57,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:51:57,742 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_2f8af3f1-304e-413e-b662-e760424c6633/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2021-11-25 19:51:57,750 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_2f8af3f1-304e-413e-b662-e760424c6633/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2021-11-25 19:51:59,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:51:59,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:51:59,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:51:59,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:51:59,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:51:59,090 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:51:59,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:51:59,093 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:51:59,094 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:51:59,708 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:51:59,709 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:51:59,711 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:51:59,713 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:51:59,715 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:51:59,716 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:51:59,717 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:51:59,718 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:51:59,719 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:51:59,720 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:52:00,032 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:52:00,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,125 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:52:00,404 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:52:00,436 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_2f8af3f1-304e-413e-b662-e760424c6633/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2021-11-25 19:52:00,437 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_2f8af3f1-304e-413e-b662-e760424c6633/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2021-11-25 19:52:00,517 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,517 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,518 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,537 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,544 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,622 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:52:00,623 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:52:00,624 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:52:00,629 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:52:00,631 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:52:00,632 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:52:00,632 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:52:00,633 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:52:00,633 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:52:00,634 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:52:00,677 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:52:00,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:52:00,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:52:01,279 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:52:01,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01 WrapperNode [2021-11-25 19:52:01,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:52:01,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:52:01,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:52:01,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:52:01,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,610 INFO L137 Inliner]: procedures = 691, calls = 2646, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 959 [2021-11-25 19:52:01,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:52:01,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:52:01,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:52:01,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:52:01,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:52:01,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:52:01,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:52:01,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:52:01,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (1/1) ... [2021-11-25 19:52:01,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:52:01,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:52:01,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:52:01,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:52:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-25 19:52:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-25 19:52:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-25 19:52:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-25 19:52:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:52:01,883 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 19:52:01,883 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 19:52:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:52:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-25 19:52:01,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-25 19:52:01,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:52:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:52:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:52:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:52:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:52:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:52:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:52:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 19:52:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 19:52:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:52:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:52:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:52:01,887 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-25 19:52:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-25 19:52:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:52:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:52:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 19:52:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 19:52:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-25 19:52:01,889 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-25 19:52:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-25 19:52:01,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-25 19:52:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 19:52:01,890 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 19:52:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:52:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:52:02,330 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:52:02,332 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:52:04,232 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:52:04,481 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:52:04,481 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:52:04,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:52:04 BoogieIcfgContainer [2021-11-25 19:52:04,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:52:04,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:52:04,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:52:04,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:52:04,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:51:57" (1/3) ... [2021-11-25 19:52:04,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e44b9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:52:04, skipping insertion in model container [2021-11-25 19:52:04,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:52:01" (2/3) ... [2021-11-25 19:52:04,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e44b9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:52:04, skipping insertion in model container [2021-11-25 19:52:04,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:52:04" (3/3) ... [2021-11-25 19:52:04,495 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2021-11-25 19:52:04,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:52:04,502 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:52:04,560 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:52:04,569 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 19:52:04,569 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:52:04,595 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) [2021-11-25 19:52:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 19:52:04,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:52:04,606 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] [2021-11-25 19:52:04,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:52:04,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:52:04,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2063670608, now seen corresponding path program 1 times [2021-11-25 19:52:04,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:52:04,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649081993] [2021-11-25 19:52:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:04,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:52:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-25 19:52:08,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:52:08,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649081993] [2021-11-25 19:52:08,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649081993] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:52:08,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144135503] [2021-11-25 19:52:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:52:08,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:52:08,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:52:08,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:52:08,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f8af3f1-304e-413e-b662-e760424c6633/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:52:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:52:09,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-25 19:52:09,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:52:09,890 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 19:52:09,899 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 19:52:09,910 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 19:52:11,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:52:11,993 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:52:11,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2021-11-25 19:52:12,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:52:12,006 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:52:12,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2021-11-25 19:52:13,522 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 19:52:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:52:13,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:52:15,307 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2021-11-25 19:52:31,183 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.