./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_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_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/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_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/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_d9f59fa6-0a9f-4eee-87c0-985874525e1b/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 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:37:48,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:37:48,505 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:37:48,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:37:48,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:37:48,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:37:48,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:37:48,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:37:48,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:37:48,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:37:48,557 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:37:48,558 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:37:48,559 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:37:48,560 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:37:48,561 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:37:48,561 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:37:48,562 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:37:48,562 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:37:48,563 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:37:48,563 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:37:48,564 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:37:48,564 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:37:48,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:37:48,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:37:48,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:37:48,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:37:48,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:37:48,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:37:48,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:37:48,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:37:48,570 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:37:48,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:37:48,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:37:48,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:37:48,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:48,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:37:48,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:37:48,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:37:48,572 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:37:48,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:37:48,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:37:48,573 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:37:48,573 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:37:48,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:37:48,573 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_d9f59fa6-0a9f-4eee-87c0-985874525e1b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82914be9df39aade96902f979c145aa97bb18d611f7f0e9a90ee0ab6b53af5a2 [2023-11-23 20:37:48,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:37:48,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:37:48,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:37:48,895 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:37:48,896 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:37:48,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2023-11-23 20:37:52,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:52,586 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:52,589 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i [2023-11-23 20:37:52,657 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/data/28cf0089b/414584dae13941bd8695b8fbbf46c5fa/FLAGa1d65c2d2 [2023-11-23 20:37:52,677 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/data/28cf0089b/414584dae13941bd8695b8fbbf46c5fa [2023-11-23 20:37:52,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:52,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:52,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:52,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:52,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:52,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:52" (1/1) ... [2023-11-23 20:37:52,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37757a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:52, skipping insertion in model container [2023-11-23 20:37:52,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:52" (1/1) ... [2023-11-23 20:37:52,821 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:53,123 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_d9f59fa6-0a9f-4eee-87c0-985874525e1b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2023-11-23 20:37:53,132 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_d9f59fa6-0a9f-4eee-87c0-985874525e1b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2023-11-23 20:37:54,351 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:54,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:54,358 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:54,359 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:54,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:54,387 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:54,388 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:54,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:54,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:54,949 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:37:54,950 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:37:54,951 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:37:54,953 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:37:54,955 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:37:54,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:37:54,964 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:37:54,966 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:37:54,969 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:37:54,974 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:37:55,362 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,363 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:55,517 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:37:55,532 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_d9f59fa6-0a9f-4eee-87c0-985874525e1b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4501,4514] [2023-11-23 20:37:55,532 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_d9f59fa6-0a9f-4eee-87c0-985874525e1b/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_ignore_case_harness.i[4561,4574] [2023-11-23 20:37:55,572 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,572 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,573 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,573 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,581 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,582 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,583 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,583 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,620 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 20:37:55,621 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 20:37:55,622 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 20:37:55,623 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 20:37:55,624 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 20:37:55,624 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 20:37:55,625 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 20:37:55,626 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 20:37:55,626 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 20:37:55,627 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 20:37:55,777 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-23 20:37:55,778 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,779 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 20:37:55,793 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-23 20:37:55,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:56,129 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,129 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,130 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,130 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,130 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,130 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,131 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,131 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,132 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,133 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,133 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,133 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,133 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,134 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,134 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,134 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,134 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,134 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:56,140 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:37:56,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56 WrapperNode [2023-11-23 20:37:56,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:56,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:56,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:37:56,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:37:56,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,401 INFO L138 Inliner]: procedures = 690, calls = 2664, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 861 [2023-11-23 20:37:56,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:56,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:37:56,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:37:56,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:37:56,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:37:56,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:37:56,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:37:56,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:37:56,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (1/1) ... [2023-11-23 20:37:56,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:56,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:56,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:37:56,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:37:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 20:37:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 20:37:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2023-11-23 20:37:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2023-11-23 20:37:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:37:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 20:37:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 20:37:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:37:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:37:56,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:37:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:37:56,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:37:56,670 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 20:37:56,670 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 20:37:56,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:37:56,670 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 20:37:56,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 20:37:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:37:56,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:37:56,671 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 20:37:56,671 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 20:37:56,672 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 20:37:56,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 20:37:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:37:56,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:37:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:37:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:37:56,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:37:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 20:37:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 20:37:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 20:37:56,674 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 20:37:56,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:37:56,675 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-23 20:37:56,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-23 20:37:56,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:37:57,005 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:37:57,008 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:37:58,423 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:37:58,648 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:37:58,649 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:37:58,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:58 BoogieIcfgContainer [2023-11-23 20:37:58,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:37:58,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:37:58,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:37:58,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:37:58,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:52" (1/3) ... [2023-11-23 20:37:58,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c6b099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:58, skipping insertion in model container [2023-11-23 20:37:58,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:56" (2/3) ... [2023-11-23 20:37:58,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c6b099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:58, skipping insertion in model container [2023-11-23 20:37:58,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:58" (3/3) ... [2023-11-23 20:37:58,659 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_ignore_case_harness.i [2023-11-23 20:37:58,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:37:58,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:37:58,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:37:58,737 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;@366e9499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:37:58,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:37:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 58 states have internal predecessors, (69), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-23 20:37:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 20:37:58,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:58,755 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:58,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:37:58,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1336324486, now seen corresponding path program 1 times [2023-11-23 20:37:58,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:58,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101659436] [2023-11-23 20:37:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:58,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-23 20:38:07,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101659436] [2023-11-23 20:38:07,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101659436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:38:07,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:38:07,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 20:38:07,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860572047] [2023-11-23 20:38:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:38:07,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 20:38:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:38:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 20:38:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:38:07,121 INFO L87 Difference]: Start difference. First operand has 113 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 58 states have internal predecessors, (69), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 9 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2023-11-23 20:38:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:38:11,732 INFO L93 Difference]: Finished difference Result 197 states and 297 transitions. [2023-11-23 20:38:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 20:38:11,735 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 9 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 81 [2023-11-23 20:38:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:38:11,749 INFO L225 Difference]: With dead ends: 197 [2023-11-23 20:38:11,749 INFO L226 Difference]: Without dead ends: 145 [2023-11-23 20:38:11,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-11-23 20:38:11,760 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 105 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:38:11,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 432 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-23 20:38:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-23 20:38:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2023-11-23 20:38:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 67 states have internal predecessors, (74), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (53), 47 states have call predecessors, (53), 48 states have call successors, (53) [2023-11-23 20:38:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2023-11-23 20:38:11,850 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 81 [2023-11-23 20:38:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:38:11,851 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2023-11-23 20:38:11,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 9 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2023-11-23 20:38:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2023-11-23 20:38:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 20:38:11,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:38:11,858 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:38:11,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:38:11,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:38:11,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:38:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash 623462772, now seen corresponding path program 1 times [2023-11-23 20:38:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:38:11,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842214408] [2023-11-23 20:38:11,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:11,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:38:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 20:38:19,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:38:19,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842214408] [2023-11-23 20:38:19,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842214408] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:38:19,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147541147] [2023-11-23 20:38:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:38:19,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:38:19,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:38:19,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:38:19,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9f59fa6-0a9f-4eee-87c0-985874525e1b/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:38:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:38:20,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-23 20:38:20,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:38:20,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 20:38:20,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 44 [2023-11-23 20:38:20,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-11-23 20:38:20,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 37 treesize of output 15 [2023-11-23 20:38:20,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 34 [2023-11-23 20:38:20,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-11-23 20:38:20,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2023-11-23 20:38:20,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-23 20:38:20,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 19 [2023-11-23 20:38:21,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:38:21,807 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 146 treesize of output 158 [2023-11-23 20:38:21,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:38:21,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 128 treesize of output 230 [2023-11-23 20:38:22,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:38:22,016 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 80 treesize of output 86 [2023-11-23 20:38:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 20:38:26,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:38:29,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 108 [2023-11-23 20:38:29,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 337 treesize of output 329 [2023-11-23 20:38:29,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 130 [2023-11-23 20:38:29,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1141 treesize of output 1109 [2023-11-23 20:38:29,461 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:38:29,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 192 [2023-11-23 20:38:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 20:38:29,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147541147] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:38:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1997991888] [2023-11-23 20:38:29,749 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2023-11-23 20:38:29,749 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:38:29,754 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:38:29,760 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:38:29,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs