./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.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_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/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_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/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_4b489398-3d3f-462d-8205-6e55883fd9aa/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 49bf9fd75d56d44e7e1e54aefea9fad1d2b78cb24b15e9eb5cce5de020ddf3d7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:34,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:34,307 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:34:34,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:34,312 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:34,338 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:34,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:34,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:34,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:34,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:34,341 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:34,342 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:34,342 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:34,343 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:34:34,344 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:34,344 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:34,345 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:34:34,345 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:34:34,346 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:34,346 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:34:34,347 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:34:34,348 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:34:34,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:34,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:34:34,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:34:34,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:34,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:34:34,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:34,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:34:34,351 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:34:34,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:34,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:34,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:34,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:34,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:34,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:34,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:34,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:34:34,354 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:34:34,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:34:34,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:34,355 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:34:34,355 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:34,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:34,356 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_4b489398-3d3f-462d-8205-6e55883fd9aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49bf9fd75d56d44e7e1e54aefea9fad1d2b78cb24b15e9eb5cce5de020ddf3d7 [2023-11-23 20:34:34,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:34,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:34,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:34,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:34,707 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:34,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i [2023-11-23 20:34:37,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:34:38,463 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:34:38,464 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i [2023-11-23 20:34:38,504 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/data/3ee77db45/9a8bca466c11453093552f4b8c6973c6/FLAGd08b32a31 [2023-11-23 20:34:38,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/data/3ee77db45/9a8bca466c11453093552f4b8c6973c6 [2023-11-23 20:34:38,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:34:38,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:34:38,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:38,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:34:38,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:34:38,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:38" (1/1) ... [2023-11-23 20:34:38,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aaab656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:38, skipping insertion in model container [2023-11-23 20:34:38,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:38" (1/1) ... [2023-11-23 20:34:38,703 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:39,042 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_4b489398-3d3f-462d-8205-6e55883fd9aa/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4505,4518] [2023-11-23 20:34:39,052 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_4b489398-3d3f-462d-8205-6e55883fd9aa/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4565,4578] [2023-11-23 20:34:40,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:40,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:40,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:40,416 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:40,418 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:40,447 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:40,449 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:40,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:40,455 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,051 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:34:41,052 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:34:41,054 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:34:41,056 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:34:41,058 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:34:41,059 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:34:41,060 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:34:41,061 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:34:41,064 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:34:41,067 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:34:41,310 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,310 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,404 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,404 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:41,525 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:34:41,539 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_4b489398-3d3f-462d-8205-6e55883fd9aa/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4505,4518] [2023-11-23 20:34:41,540 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_4b489398-3d3f-462d-8205-6e55883fd9aa/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4565,4578] [2023-11-23 20:34:41,576 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,577 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,577 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,579 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,626 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:34:41,627 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:34:41,628 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:34:41,628 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:34:41,629 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:34:41,630 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:34:41,641 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:34:41,641 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:34:41,644 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:34:41,645 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:34:41,710 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8265] [2023-11-23 20:34:41,781 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,782 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:34:41,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8751-8762] [2023-11-23 20:34:41,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:42,140 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,140 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,140 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,141 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,141 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,141 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,141 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,141 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,141 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,142 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,142 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,142 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,142 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,142 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,143 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,143 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,143 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,143 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:42,151 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:34:42,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42 WrapperNode [2023-11-23 20:34:42,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:42,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:42,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:34:42,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:34:42,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,441 INFO L138 Inliner]: procedures = 690, calls = 2655, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 970 [2023-11-23 20:34:42,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:42,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:34:42,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:34:42,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:34:42,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:34:42,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:34:42,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:34:42,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:34:42,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (1/1) ... [2023-11-23 20:34:42,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:42,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:42,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:34:42,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:34:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 20:34:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 20:34:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 20:34:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 20:34:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:34:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 20:34:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 20:34:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:34:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 20:34:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 20:34:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:34:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:34:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:34:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:34:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:34:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:34:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:34:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 20:34:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 20:34:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:34:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:34:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:34:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 20:34:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 20:34:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:34:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:34:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 20:34:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 20:34:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 20:34:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 20:34:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2023-11-23 20:34:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2023-11-23 20:34:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 20:34:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 20:34:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:34:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:34:43,117 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:34:43,119 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:34:44,579 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:34:44,929 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:34:44,929 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:34:44,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:44 BoogieIcfgContainer [2023-11-23 20:34:44,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:34:44,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:34:44,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:34:44,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:34:44,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:34:38" (1/3) ... [2023-11-23 20:34:44,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bbf65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:44, skipping insertion in model container [2023-11-23 20:34:44,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:42" (2/3) ... [2023-11-23 20:34:44,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bbf65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:44, skipping insertion in model container [2023-11-23 20:34:44,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:44" (3/3) ... [2023-11-23 20:34:44,940 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness_negated.i [2023-11-23 20:34:44,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:34:44,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:34:45,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:34:45,058 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;@6ae3421c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:34:45,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:34:45,064 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) [2023-11-23 20:34:45,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 20:34:45,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:45,080 INFO L195 NwaCegarLoop]: 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] [2023-11-23 20:34:45,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:45,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash -819088177, now seen corresponding path program 1 times [2023-11-23 20:34:45,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:45,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108598629] [2023-11-23 20:34:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 20:34:55,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:55,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108598629] [2023-11-23 20:34:55,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108598629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:34:55,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559420097] [2023-11-23 20:34:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:55,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:34:55,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:55,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:34:55,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b489398-3d3f-462d-8205-6e55883fd9aa/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:34:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:57,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-23 20:34:57,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:58,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2023-11-23 20:34:58,187 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 15 treesize of output 1 [2023-11-23 20:34:58,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2023-11-23 20:35:02,980 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-23 20:35:02,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 10 [2023-11-23 20:35:02,995 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-23 20:35:02,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 10 [2023-11-23 20:35:03,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:35:03,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2023-11-23 20:35:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 20:35:03,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:05,038 WARN L176 XnfTransformerHelper]: Simplifying conjunction of 11492 disjunctions. This might take some time... [2023-11-23 20:35:17,752 INFO L192 XnfTransformerHelper]: Simplified to conjunction of 10816 disjunctions.