./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --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 f1ac591932d47e9b0b8902b9705db38e4b5e721c8f02110220ca6714b79582bb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:42:15,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:42:15,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:42:15,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:42:15,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:42:15,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:42:15,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:42:15,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:42:15,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:42:15,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:42:15,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:42:15,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:42:15,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:42:15,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:42:15,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:42:15,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:42:15,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:42:15,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:42:15,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:42:15,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:42:15,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:42:15,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:42:15,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:42:15,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:42:15,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:42:15,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:42:15,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:42:15,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:42:15,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:42:15,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:42:15,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:42:15,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:42:15,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:42:15,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:42:15,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:42:15,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:42:15,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:42:15,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:42:15,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:42:15,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:42:15,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:42:15,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:42:15,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:42:15,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:42:15,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:42:15,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:42:15,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:42:15,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:42:15,595 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:42:15,595 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:42:15,595 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:42:15,595 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:42:15,596 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:42:15,596 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:42:15,596 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:42:15,596 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:42:15,597 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:42:15,597 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:42:15,597 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:42:15,597 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:42:15,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:42:15,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:42:15,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:42:15,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:42:15,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:42:15,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:42:15,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:42:15,600 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:42:15,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:42:15,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:42:15,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:42:15,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:42:15,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:42:15,602 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:42:15,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:42:15,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:42:15,602 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:42:15,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:42:15,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:42:15,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:42:15,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1ac591932d47e9b0b8902b9705db38e4b5e721c8f02110220ca6714b79582bb [2022-10-17 17:42:15,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:42:15,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:42:15,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:42:15,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:42:15,903 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:42:15,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i [2022-10-17 17:42:15,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/data/29f37b1e5/d0abf985eb7d4f0b8e40ced0ede6bd9b/FLAGc243d960f [2022-10-17 17:42:16,758 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:42:16,759 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i [2022-10-17 17:42:16,799 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/data/29f37b1e5/d0abf985eb7d4f0b8e40ced0ede6bd9b/FLAGc243d960f [2022-10-17 17:42:17,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/data/29f37b1e5/d0abf985eb7d4f0b8e40ced0ede6bd9b [2022-10-17 17:42:17,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:42:17,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:42:17,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:42:17,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:42:17,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:42:17,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:42:17" (1/1) ... [2022-10-17 17:42:17,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b73eb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:17, skipping insertion in model container [2022-10-17 17:42:17,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:42:17" (1/1) ... [2022-10-17 17:42:17,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:42:17,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:42:17,733 WARN L230 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_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i[4497,4510] [2022-10-17 17:42:17,742 WARN L230 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_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i[4557,4570] [2022-10-17 17:42:18,773 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:18,774 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:18,774 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:18,775 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:18,777 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:18,804 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:18,807 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:18,809 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:18,810 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,237 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:42:19,239 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:42:19,240 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:42:19,241 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:42:19,243 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:42:19,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:42:19,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:42:19,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:42:19,246 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:42:19,246 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:42:19,490 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:42:19,601 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,602 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:42:19,777 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:42:19,791 WARN L230 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_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i[4497,4510] [2022-10-17 17:42:19,791 WARN L230 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_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i[4557,4570] [2022-10-17 17:42:19,828 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,829 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,829 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,831 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,838 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,840 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,910 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:42:19,911 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:42:19,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:42:19,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:42:19,913 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:42:19,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:42:19,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:42:19,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:42:19,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:42:19,916 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:42:19,935 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:42:19,987 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:19,988 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:42:20,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:42:20,325 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:42:20,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20 WrapperNode [2022-10-17 17:42:20,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:42:20,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:42:20,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:42:20,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:42:20,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,575 INFO L138 Inliner]: procedures = 690, calls = 2631, calls flagged for inlining = 61, calls inlined = 10, statements flattened = 959 [2022-10-17 17:42:20,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:42:20,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:42:20,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:42:20,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:42:20,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:42:20,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:42:20,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:42:20,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:42:20,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (1/1) ... [2022-10-17 17:42:20,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:42:20,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:42:20,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:42:20,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:42:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2022-10-17 17:42:20,826 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2022-10-17 17:42:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-10-17 17:42:20,828 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-10-17 17:42:20,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:42:20,829 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-10-17 17:42:20,830 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-10-17 17:42:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-10-17 17:42:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:42:20,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:42:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:42:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:42:20,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:42:20,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:42:20,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:42:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:42:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:42:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:42:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:42:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:42:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 17:42:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 17:42:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:42:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:42:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:42:20,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:42:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:42:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:42:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:42:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-10-17 17:42:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-10-17 17:42:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:42:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-10-17 17:42:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:42:21,119 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:42:21,121 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:42:23,039 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:42:23,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:42:23,391 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:42:23,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:42:23 BoogieIcfgContainer [2022-10-17 17:42:23,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:42:23,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:42:23,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:42:23,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:42:23,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:42:17" (1/3) ... [2022-10-17 17:42:23,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9f25c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:42:23, skipping insertion in model container [2022-10-17 17:42:23,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:20" (2/3) ... [2022-10-17 17:42:23,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9f25c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:42:23, skipping insertion in model container [2022-10-17 17:42:23,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:42:23" (3/3) ... [2022-10-17 17:42:23,410 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_u8_harness.i [2022-10-17 17:42:23,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:42:23,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:42:23,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:42:23,523 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=LoopsAndPotentialCycles, 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;@bf6b3cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:42:23,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:42:23,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 50 states have (on average 1.2) internal successors, (60), 51 states have internal predecessors, (60), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-10-17 17:42:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-17 17:42:23,543 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:42:23,543 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:42:23,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:42:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:42:23,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1689395139, now seen corresponding path program 1 times [2022-10-17 17:42:23,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:42:23,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592407714] [2022-10-17 17:42:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:42:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:42:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:42:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-10-17 17:42:37,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:42:37,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592407714] [2022-10-17 17:42:37,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592407714] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:42:37,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959293210] [2022-10-17 17:42:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:42:37,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:42:37,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:42:37,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:42:37,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:42:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:42:38,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 84 conjunts are in the unsatisfiable core [2022-10-17 17:42:38,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:42:38,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:42:38,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:42:38,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:42:40,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:42:40,480 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:42:40,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 7 [2022-10-17 17:42:40,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:42:40,497 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-17 17:42:40,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 7 [2022-10-17 17:42:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-10-17 17:42:41,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:42:41,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959293210] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:42:41,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:42:41,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2022-10-17 17:42:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942274793] [2022-10-17 17:42:41,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:42:41,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 17:42:41,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:42:41,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 17:42:41,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-10-17 17:42:41,087 INFO L87 Difference]: Start difference. First operand has 98 states, 50 states have (on average 1.2) internal successors, (60), 51 states have internal predecessors, (60), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 16 states, 8 states have (on average 3.25) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2022-10-17 17:42:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:42:44,148 INFO L93 Difference]: Finished difference Result 187 states and 270 transitions. [2022-10-17 17:42:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 17:42:44,153 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 8 states have (on average 3.25) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 68 [2022-10-17 17:42:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:42:44,167 INFO L225 Difference]: With dead ends: 187 [2022-10-17 17:42:44,167 INFO L226 Difference]: Without dead ends: 95 [2022-10-17 17:42:44,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-10-17 17:42:44,181 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 54 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-17 17:42:44,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 592 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 255 Invalid, 0 Unknown, 92 Unchecked, 2.8s Time] [2022-10-17 17:42:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-17 17:42:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-10-17 17:42:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-10-17 17:42:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 130 transitions. [2022-10-17 17:42:44,266 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 130 transitions. Word has length 68 [2022-10-17 17:42:44,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:42:44,267 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 130 transitions. [2022-10-17 17:42:44,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 8 states have (on average 3.25) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2022-10-17 17:42:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 130 transitions. [2022-10-17 17:42:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-17 17:42:44,274 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:42:44,274 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 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] [2022-10-17 17:42:44,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:42:44,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_490011e6-17e3-4fe0-acc2-6cb8d2d47fc5/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:42:44,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:42:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:42:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash 253932262, now seen corresponding path program 1 times [2022-10-17 17:42:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:42:44,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133449328] [2022-10-17 17:42:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:42:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms