./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 f6da3aa04741dedcde0205dc04a8136a445ebd58b30adbc60377ecda455d64bb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:10:31,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:10:31,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:10:31,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:10:31,312 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:10:31,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:10:31,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:10:31,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:10:31,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:10:31,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:10:31,387 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:10:31,388 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:10:31,388 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:10:31,390 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:10:31,391 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:10:31,391 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:10:31,392 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:10:31,392 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:10:31,393 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:10:31,393 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:10:31,394 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:10:31,394 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:10:31,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:10:31,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:10:31,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:10:31,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:10:31,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:10:31,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:10:31,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:10:31,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:10:31,400 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:10:31,401 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:10:31,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:10:31,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:10:31,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:31,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:10:31,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:10:31,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:10:31,409 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:10:31,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:10:31,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:10:31,410 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:10:31,410 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:10:31,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:10:31,411 INFO L153 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_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6da3aa04741dedcde0205dc04a8136a445ebd58b30adbc60377ecda455d64bb [2023-11-23 21:10:31,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:10:31,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:10:31,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:10:31,768 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:10:31,769 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:10:31,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i [2023-11-23 21:10:34,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:10:35,468 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:10:35,470 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i [2023-11-23 21:10:35,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/data/f18c83c37/1188f7af88c54b428358ac6f2706879d/FLAGf5c4d792b [2023-11-23 21:10:35,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/data/f18c83c37/1188f7af88c54b428358ac6f2706879d [2023-11-23 21:10:35,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:10:35,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:10:35,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:35,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:10:35,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:10:35,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:35" (1/1) ... [2023-11-23 21:10:35,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5a12e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:35, skipping insertion in model container [2023-11-23 21:10:35,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:35" (1/1) ... [2023-11-23 21:10:35,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:10:36,070 WARN L240 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_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i[4499,4512] [2023-11-23 21:10:36,079 WARN L240 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_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i[4559,4572] [2023-11-23 21:10:37,408 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:37,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:37,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:37,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:37,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:37,440 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:37,441 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:37,443 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:37,444 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,002 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:10:38,003 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:10:38,005 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:10:38,008 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:10:38,013 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:10:38,014 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:10:38,015 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:10:38,016 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:10:38,019 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:10:38,022 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:10:38,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:38,552 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:10:38,566 WARN L240 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_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i[4499,4512] [2023-11-23 21:10:38,567 WARN L240 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_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be16_harness.i[4559,4572] [2023-11-23 21:10:38,607 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,615 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,617 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,618 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,627 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,632 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,633 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,697 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:10:38,698 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:10:38,699 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:10:38,699 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:10:38,700 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:10:38,701 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:10:38,701 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:10:38,702 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:10:38,702 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:10:38,703 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:10:38,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-23 21:10:38,836 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,837 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:10:38,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-23 21:10:38,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:10:39,203 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,204 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,204 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,205 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,205 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,206 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,206 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,206 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,206 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,207 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,207 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,208 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,208 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,209 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,209 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,209 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,209 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,209 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:10:39,247 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:10:39,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39 WrapperNode [2023-11-23 21:10:39,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:10:39,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:39,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:10:39,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:10:39,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,519 INFO L138 Inliner]: procedures = 690, calls = 2648, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1022 [2023-11-23 21:10:39,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:10:39,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:10:39,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:10:39,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:10:39,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,606 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:10:39,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:10:39,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:10:39,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:10:39,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (1/1) ... [2023-11-23 21:10:39,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:10:39,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:39,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:10:39,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:10:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2023-11-23 21:10:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2023-11-23 21:10:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 21:10:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 21:10:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure ntohs [2023-11-23 21:10:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:10:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:10:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:10:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 21:10:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:10:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:10:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:10:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:10:39,737 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:10:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:10:39,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:10:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:10:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh16 [2023-11-23 21:10:39,738 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh16 [2023-11-23 21:10:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:10:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:10:39,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:10:39,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:10:39,739 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:10:39,739 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:10:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 21:10:39,740 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 21:10:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:10:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:10:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 21:10:39,740 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 21:10:39,741 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:10:39,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:10:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:10:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:10:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:10:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:10:39,743 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:10:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:10:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 21:10:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:10:40,096 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:10:40,100 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:10:41,737 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:10:42,181 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:10:42,181 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:10:42,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:42 BoogieIcfgContainer [2023-11-23 21:10:42,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:10:42,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:10:42,188 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:10:42,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:10:42,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:35" (1/3) ... [2023-11-23 21:10:42,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3141b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:42, skipping insertion in model container [2023-11-23 21:10:42,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:39" (2/3) ... [2023-11-23 21:10:42,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3141b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:42, skipping insertion in model container [2023-11-23 21:10:42,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:42" (3/3) ... [2023-11-23 21:10:42,197 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be16_harness.i [2023-11-23 21:10:42,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:10:42,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:10:42,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:10:42,295 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d5f0f5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:10:42,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:10:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 65 states have (on average 1.2) internal successors, (78), 66 states have internal predecessors, (78), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 21:10:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:10:42,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:42,318 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:10:42,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:42,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash -120917620, now seen corresponding path program 1 times [2023-11-23 21:10:42,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:42,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007527885] [2023-11-23 21:10:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:42,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 21:10:44,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:44,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007527885] [2023-11-23 21:10:44,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007527885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:44,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:10:44,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:10:44,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153962011] [2023-11-23 21:10:44,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:44,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:10:44,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:45,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:10:45,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:10:45,017 INFO L87 Difference]: Start difference. First operand has 126 states, 65 states have (on average 1.2) internal successors, (78), 66 states have internal predecessors, (78), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:10:45,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:45,784 INFO L93 Difference]: Finished difference Result 221 states and 323 transitions. [2023-11-23 21:10:45,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:10:45,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 82 [2023-11-23 21:10:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:45,803 INFO L225 Difference]: With dead ends: 221 [2023-11-23 21:10:45,807 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 21:10:45,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:10:45,814 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 4 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:45,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 457 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:10:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 21:10:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-23 21:10:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 68 states have internal predecessors, (80), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-23 21:10:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2023-11-23 21:10:45,917 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 82 [2023-11-23 21:10:45,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:45,918 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2023-11-23 21:10:45,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:10:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2023-11-23 21:10:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 21:10:45,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:45,925 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:10:45,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:10:45,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:45,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:45,927 INFO L85 PathProgramCache]: Analyzing trace with hash 399664519, now seen corresponding path program 1 times [2023-11-23 21:10:45,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:45,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552253220] [2023-11-23 21:10:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:45,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 21:10:48,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:48,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552253220] [2023-11-23 21:10:48,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552253220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:10:48,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849566802] [2023-11-23 21:10:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:48,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:48,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:48,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:48,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:10:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:49,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:10:49,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 21:10:49,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:10:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 21:10:49,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849566802] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:10:49,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:10:49,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2023-11-23 21:10:49,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821943672] [2023-11-23 21:10:49,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:49,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:10:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:10:49,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:10:49,264 INFO L87 Difference]: Start difference. First operand 127 states and 176 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:10:49,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:49,896 INFO L93 Difference]: Finished difference Result 226 states and 318 transitions. [2023-11-23 21:10:49,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:10:49,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 83 [2023-11-23 21:10:49,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:49,903 INFO L225 Difference]: With dead ends: 226 [2023-11-23 21:10:49,904 INFO L226 Difference]: Without dead ends: 132 [2023-11-23 21:10:49,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:10:49,906 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 4 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:49,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 303 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:10:49,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-23 21:10:49,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-11-23 21:10:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 70 states have internal predecessors, (83), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-23 21:10:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 179 transitions. [2023-11-23 21:10:49,936 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 179 transitions. Word has length 83 [2023-11-23 21:10:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:49,936 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 179 transitions. [2023-11-23 21:10:49,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:10:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 179 transitions. [2023-11-23 21:10:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 21:10:49,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:49,940 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:10:49,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:50,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:50,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:50,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1221880274, now seen corresponding path program 1 times [2023-11-23 21:10:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:50,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211433587] [2023-11-23 21:10:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 21:10:53,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211433587] [2023-11-23 21:10:53,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211433587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:10:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185831994] [2023-11-23 21:10:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:53,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:53,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:53,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:53,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:10:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:54,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 21:10:54,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 21:10:54,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:10:54,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185831994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:10:54,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:10:54,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 11 [2023-11-23 21:10:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611949643] [2023-11-23 21:10:54,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:10:54,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:10:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:10:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:10:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:10:54,649 INFO L87 Difference]: Start difference. First operand 130 states and 179 transitions. Second operand has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 21:10:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:10:56,700 INFO L93 Difference]: Finished difference Result 247 states and 343 transitions. [2023-11-23 21:10:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:10:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 84 [2023-11-23 21:10:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:10:56,703 INFO L225 Difference]: With dead ends: 247 [2023-11-23 21:10:56,704 INFO L226 Difference]: Without dead ends: 130 [2023-11-23 21:10:56,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:10:56,706 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 2 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:10:56,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 872 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 21:10:56,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-23 21:10:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-11-23 21:10:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 70 states have internal predecessors, (82), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-23 21:10:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 178 transitions. [2023-11-23 21:10:56,723 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 178 transitions. Word has length 84 [2023-11-23 21:10:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:10:56,723 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 178 transitions. [2023-11-23 21:10:56,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 21:10:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 178 transitions. [2023-11-23 21:10:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 21:10:56,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:10:56,726 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:10:56,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:10:56,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:56,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:10:56,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:10:56,943 INFO L85 PathProgramCache]: Analyzing trace with hash 707389441, now seen corresponding path program 1 times [2023-11-23 21:10:56,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:10:56,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191829135] [2023-11-23 21:10:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:56,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:10:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-23 21:10:58,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:10:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191829135] [2023-11-23 21:10:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191829135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:10:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116026839] [2023-11-23 21:10:58,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:10:58,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:10:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:10:58,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:10:58,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4fcb8bc-fea0-4dc2-8c80-3a21ba04b8ce/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:10:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:10:59,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 183 conjunts are in the unsatisfiable core [2023-11-23 21:10:59,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:10:59,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 [2023-11-23 21:10:59,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2023-11-23 21:11:00,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:11:00,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:11:01,210 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 21:11:01,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2023-11-23 21:11:01,236 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 21:11:01,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2023-11-23 21:11:01,266 INFO L378 Elim1Store]: Elim1 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 8 treesize of output 1 [2023-11-23 21:11:03,829 INFO L349 Elim1Store]: treesize reduction 96, result has 20.0 percent of original size [2023-11-23 21:11:03,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 37 [2023-11-23 21:11:04,284 INFO L349 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2023-11-23 21:11:04,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2023-11-23 21:11:04,870 INFO L349 Elim1Store]: treesize reduction 96, result has 22.0 percent of original size [2023-11-23 21:11:04,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 46 treesize of output 69 [2023-11-23 21:11:04,964 INFO L349 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2023-11-23 21:11:04,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 57 [2023-11-23 21:11:05,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 21:11:07,907 INFO L349 Elim1Store]: treesize reduction 360, result has 22.2 percent of original size [2023-11-23 21:11:07,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 48 case distinctions, treesize of input 188 treesize of output 271 [2023-11-23 21:11:08,480 INFO L349 Elim1Store]: treesize reduction 176, result has 49.9 percent of original size [2023-11-23 21:11:08,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 159 treesize of output 319 [2023-11-23 21:11:08,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13