./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/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_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/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_7028d2bc-d805-45c7-b6f1-30d38feb434e/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_7028d2bc-d805-45c7-b6f1-30d38feb434e/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 c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:52,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:53,089 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:13:53,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:53,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:53,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:53,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:53,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:53,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:53,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:53,144 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:53,145 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:53,146 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:53,147 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:53,148 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:53,148 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:53,149 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:53,149 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:53,150 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:53,150 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:53,150 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:53,151 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:53,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:53,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:53,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:53,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:53,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:53,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:53,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:53,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:53,156 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:53,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:53,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:53,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:53,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:53,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:53,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:53,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:53,158 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:53,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:53,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:53,159 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:53,159 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:53,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:53,160 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_7028d2bc-d805-45c7-b6f1-30d38feb434e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d [2023-11-23 21:13:53,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:53,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:53,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:53,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:53,486 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:53,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i [2023-11-23 21:13:56,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:57,259 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:57,260 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i [2023-11-23 21:13:57,319 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/data/207d999e2/9f25f2dab6ac4f9d9ea39304739b2932/FLAGc3c5d2735 [2023-11-23 21:13:57,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/data/207d999e2/9f25f2dab6ac4f9d9ea39304739b2932 [2023-11-23 21:13:57,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:57,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:57,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:57,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:57,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:57,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:57" (1/1) ... [2023-11-23 21:13:57,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29279ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:57, skipping insertion in model container [2023-11-23 21:13:57,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:57" (1/1) ... [2023-11-23 21:13:57,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:57,820 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_7028d2bc-d805-45c7-b6f1-30d38feb434e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4501,4514] [2023-11-23 21:13:57,829 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_7028d2bc-d805-45c7-b6f1-30d38feb434e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4561,4574] [2023-11-23 21:13:58,965 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:58,966 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:58,966 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:58,967 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:58,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:58,981 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:58,982 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:58,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:58,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,397 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:13:59,399 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:13:59,400 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:13:59,401 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:13:59,403 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:13:59,404 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:13:59,405 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:13:59,406 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:13:59,406 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:13:59,407 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:13:59,704 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,704 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:59,873 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:59,904 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_7028d2bc-d805-45c7-b6f1-30d38feb434e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4501,4514] [2023-11-23 21:13:59,905 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_7028d2bc-d805-45c7-b6f1-30d38feb434e/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4561,4574] [2023-11-23 21:13:59,962 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,965 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,965 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,976 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:13:59,977 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,027 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,028 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,099 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 21:14:00,103 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 21:14:00,103 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 21:14:00,105 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 21:14:00,106 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 21:14:00,106 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 21:14:00,107 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 21:14:00,108 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 21:14:00,108 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 21:14:00,109 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 21:14:00,228 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2023-11-23 21:14:00,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 21:14:00,246 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2023-11-23 21:14:00,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:00,632 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,632 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,632 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,633 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,633 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,633 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,633 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,633 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,634 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,634 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,634 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,634 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,634 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,635 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,635 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,635 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,635 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,635 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,635 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,636 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:00,644 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:00,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00 WrapperNode [2023-11-23 21:14:00,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:00,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:00,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:00,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:00,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:00,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:00,919 INFO L138 Inliner]: procedures = 692, calls = 2790, calls flagged for inlining = 59, calls inlined = 7, statements flattened = 832 [2023-11-23 21:14:00,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:00,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:00,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:00,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:00,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:00,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:00,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:00,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:01,033 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:01,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:01,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:01,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:01,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:01,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:01,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:01,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:01,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (1/1) ... [2023-11-23 21:14:01,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:01,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:01,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:01,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7028d2bc-d805-45c7-b6f1-30d38feb434e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 21:14:01,190 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 21:14:01,190 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 21:14:01,190 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 21:14:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 21:14:01,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 21:14:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:14:01,191 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 21:14:01,192 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 21:14:01,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:14:01,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:14:01,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:14:01,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:14:01,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:14:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:01,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 21:14:01,193 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 21:14:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:14:01,194 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2023-11-23 21:14:01,194 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2023-11-23 21:14:01,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:14:01,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:14:01,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:14:01,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:14:01,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:14:01,196 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 21:14:01,197 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 21:14:01,197 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 21:14:01,198 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 21:14:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:14:01,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:14:01,662 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:01,665 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:03,029 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:03,344 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:03,344 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:14:03,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:03 BoogieIcfgContainer [2023-11-23 21:14:03,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:03,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:03,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:03,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:03,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:57" (1/3) ... [2023-11-23 21:14:03,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dd6f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:03, skipping insertion in model container [2023-11-23 21:14:03,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:00" (2/3) ... [2023-11-23 21:14:03,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dd6f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:03, skipping insertion in model container [2023-11-23 21:14:03,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:03" (3/3) ... [2023-11-23 21:14:03,368 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_string_harness.i [2023-11-23 21:14:03,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:03,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:14:03,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:03,465 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;@2357f7f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:03,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:14:03,471 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) [2023-11-23 21:14:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 21:14:03,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:03,482 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] [2023-11-23 21:14:03,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:03,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2055841313, now seen corresponding path program 1 times [2023-11-23 21:14:03,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:03,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158045529] [2023-11-23 21:14:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:03,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:14,187 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:14:14,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:14,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158045529] [2023-11-23 21:14:14,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158045529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:14,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:14,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 21:14:14,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983994737] [2023-11-23 21:14:14,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:14,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 21:14:14,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 21:14:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:14:14,267 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) [2023-11-23 21:14:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:15,081 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2023-11-23 21:14:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 21:14:15,093 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 [2023-11-23 21:14:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:15,107 INFO L225 Difference]: With dead ends: 112 [2023-11-23 21:14:15,107 INFO L226 Difference]: Without dead ends: 74 [2023-11-23 21:14:15,113 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 [2023-11-23 21:14:15,124 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 13 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2023-11-23 21:14:15,127 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] [2023-11-23 21:14:15,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-23 21:14:15,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-23 21:14:15,206 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) [2023-11-23 21:14:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2023-11-23 21:14:15,217 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 55 [2023-11-23 21:14:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:15,219 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2023-11-23 21:14:15,219 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) [2023-11-23 21:14:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2023-11-23 21:14:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 21:14:15,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:15,226 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] [2023-11-23 21:14:15,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:14:15,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:15,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:15,227 INFO L85 PathProgramCache]: Analyzing trace with hash -954504042, now seen corresponding path program 1 times [2023-11-23 21:14:15,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:15,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464506377] [2023-11-23 21:14:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat