./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5 --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 c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:56:22,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:56:22,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:56:22,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:56:22,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:56:22,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:56:22,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:56:22,688 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:56:22,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:56:22,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:56:22,690 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:56:22,691 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:56:22,691 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:56:22,692 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:56:22,693 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:56:22,693 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:56:22,694 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:56:22,694 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:56:22,695 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:56:22,696 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:56:22,696 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:56:22,697 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:56:22,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:56:22,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:56:22,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:56:22,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:56:22,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:56:22,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:56:22,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:56:22,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:56:22,703 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:56:22,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:56:22,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:56:22,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:56:22,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:56:22,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:56:22,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:56:22,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:56:22,707 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:56:22,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:56:22,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:56:22,710 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:56:22,710 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:56:22,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:56:22,711 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_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d [2023-11-21 19:56:23,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:56:23,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:56:23,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:56:23,065 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:56:23,066 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:56:23,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i [2023-11-21 19:56:26,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:56:26,966 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:56:26,967 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i [2023-11-21 19:56:27,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/data/d209c3e3b/bb9e0b78679c4560b593fda6b3870d35/FLAG86aac29ba [2023-11-21 19:56:27,030 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/data/d209c3e3b/bb9e0b78679c4560b593fda6b3870d35 [2023-11-21 19:56:27,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:56:27,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:56:27,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:56:27,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:56:27,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:56:27,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:56:27" (1/1) ... [2023-11-21 19:56:27,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e911e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:27, skipping insertion in model container [2023-11-21 19:56:27,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:56:27" (1/1) ... [2023-11-21 19:56:27,231 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:56:27,578 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_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4501,4514] [2023-11-21 19:56:27,589 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_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4561,4574] [2023-11-21 19:56:28,838 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:28,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:28,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:28,841 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:28,843 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:28,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:28,860 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:28,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:28,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,350 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:56:29,352 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:56:29,353 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:56:29,357 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:56:29,363 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:56:29,364 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:56:29,365 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:56:29,366 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:56:29,369 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:56:29,372 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:56:29,666 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,667 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:56:29,871 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:56:29,901 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_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4501,4514] [2023-11-21 19:56:29,904 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_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4561,4574] [2023-11-21 19:56:29,960 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,960 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,961 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,961 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,962 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,969 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:29,970 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:30,046 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 19:56:30,047 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 19:56:30,047 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 19:56:30,049 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 19:56:30,049 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 19:56:30,050 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 19:56:30,050 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 19:56:30,051 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 19:56:30,051 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 19:56:30,052 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 19:56:30,157 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2023-11-21 19:56:30,159 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:30,159 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 19:56:30,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2023-11-21 19:56:30,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:56:30,544 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,544 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,544 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,545 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,545 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,545 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,545 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,546 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,546 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,546 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,546 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,546 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,546 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,547 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,547 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,547 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,547 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,547 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,547 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,547 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:56:30,554 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:56:30,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30 WrapperNode [2023-11-21 19:56:30,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:56:30,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:56:30,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:56:30,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:56:30,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,770 INFO L138 Inliner]: procedures = 692, calls = 2790, calls flagged for inlining = 59, calls inlined = 7, statements flattened = 832 [2023-11-21 19:56:30,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:56:30,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:56:30,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:56:30,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:56:30,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:56:30,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:56:30,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:56:30,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:56:30,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (1/1) ... [2023-11-21 19:56:30,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:56:30,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:56:30,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:56:30,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce3ce5c-2649-4b29-8c4a-0cf99c78d44a/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:56:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-21 19:56:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-21 19:56:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-21 19:56:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-21 19:56:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-21 19:56:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-21 19:56:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:56:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 19:56:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 19:56:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:56:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 19:56:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 19:56:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:56:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:56:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:56:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:56:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:56:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 19:56:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 19:56:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:56:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2023-11-21 19:56:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2023-11-21 19:56:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:56:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:56:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:56:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:56:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:56:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 19:56:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 19:56:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 19:56:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 19:56:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:56:30,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:56:31,310 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:56:31,313 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:56:32,876 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:56:33,185 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:56:33,185 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:56:33,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:56:33 BoogieIcfgContainer [2023-11-21 19:56:33,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:56:33,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:56:33,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:56:33,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:56:33,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:56:27" (1/3) ... [2023-11-21 19:56:33,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb8120e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:56:33, skipping insertion in model container [2023-11-21 19:56:33,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:56:30" (2/3) ... [2023-11-21 19:56:33,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb8120e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:56:33, skipping insertion in model container [2023-11-21 19:56:33,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:56:33" (3/3) ... [2023-11-21 19:56:33,197 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_string_harness.i [2023-11-21 19:56:33,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:56:33,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:56:33,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:56:33,278 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;@7cba0f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:56:33,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:56:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:56:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-21 19:56:33,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:56:33,295 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:56:33,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:56:33,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:56:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2055841313, now seen corresponding path program 1 times [2023-11-21 19:56:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:56:33,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361807436] [2023-11-21 19:56:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:56:33,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:56:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:56:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 19:56:42,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:56:42,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361807436] [2023-11-21 19:56:42,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361807436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:56:42,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:56:42,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-21 19:56:42,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381736985] [2023-11-21 19:56:42,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:56:42,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-21 19:56:42,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:56:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-21 19:56:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2023-11-21 19:56:42,968 INFO L87 Difference]: Start difference. First operand has 73 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 17 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-21 19:56:43,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:56:43,683 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2023-11-21 19:56:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 19:56:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) Word has length 55 [2023-11-21 19:56:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:56:43,704 INFO L225 Difference]: With dead ends: 112 [2023-11-21 19:56:43,704 INFO L226 Difference]: Without dead ends: 74 [2023-11-21 19:56:43,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-11-21 19:56:43,719 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 13 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:56:43,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1033 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 19:56:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-21 19:56:43,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-21 19:56:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-21 19:56:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2023-11-21 19:56:43,805 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 55 [2023-11-21 19:56:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:56:43,807 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2023-11-21 19:56:43,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-21 19:56:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2023-11-21 19:56:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-21 19:56:43,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:56:43,814 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 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] [2023-11-21 19:56:43,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:56:43,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:56:43,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:56:43,816 INFO L85 PathProgramCache]: Analyzing trace with hash -954504042, now seen corresponding path program 1 times [2023-11-21 19:56:43,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:56:43,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782832869] [2023-11-21 19:56:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:56:43,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:56:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat