./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS --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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- 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-8393723 [2022-11-19 07:21:59,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:21:59,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:21:59,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:21:59,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:21:59,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:21:59,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:21:59,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:21:59,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:21:59,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:21:59,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:21:59,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:21:59,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:21:59,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:21:59,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:21:59,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:21:59,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:21:59,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:21:59,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:21:59,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:21:59,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:21:59,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:21:59,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:21:59,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:21:59,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:21:59,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:21:59,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:21:59,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:21:59,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:21:59,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:21:59,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:21:59,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:21:59,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:21:59,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:21:59,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:21:59,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:21:59,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:21:59,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:21:59,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:21:59,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:21:59,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:21:59,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:22:00,027 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:22:00,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:22:00,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:22:00,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:22:00,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:22:00,039 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:22:00,039 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:22:00,039 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:22:00,040 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:22:00,040 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:22:00,041 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:22:00,042 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:22:00,042 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:22:00,042 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:22:00,043 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:22:00,043 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:22:00,044 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:22:00,044 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:22:00,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:22:00,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:22:00,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:22:00,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:22:00,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:22:00,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:22:00,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:22:00,047 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:22:00,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:22:00,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:22:00,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:22:00,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:22:00,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:22:00,050 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:22:00,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:22:00,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:22:00,051 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:22:00,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:22:00,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:22:00,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:22:00,052 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_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2022-11-19 07:22:00,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:22:00,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:22:00,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:22:00,480 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:22:00,481 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:22:00,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2022-11-19 07:22:00,562 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/data/8fb16902d/5b324df73cfa4af4a75e674772618ac6/FLAGe5f72bc40 [2022-11-19 07:22:01,737 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:22:01,740 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2022-11-19 07:22:01,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/data/8fb16902d/5b324df73cfa4af4a75e674772618ac6/FLAGe5f72bc40 [2022-11-19 07:22:02,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/data/8fb16902d/5b324df73cfa4af4a75e674772618ac6 [2022-11-19 07:22:02,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:22:02,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:22:02,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:22:02,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:22:02,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:22:02,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:22:02" (1/1) ... [2022-11-19 07:22:02,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16764a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:02, skipping insertion in model container [2022-11-19 07:22:02,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:22:02" (1/1) ... [2022-11-19 07:22:02,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:22:02,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:22:02,711 WARN L234 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_706b0cfc-098e-4e4c-b906-4ea14760ecce/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2022-11-19 07:22:02,721 WARN L234 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_706b0cfc-098e-4e4c-b906-4ea14760ecce/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2022-11-19 07:22:03,930 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:03,935 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:03,935 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:03,936 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:03,937 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:03,954 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:03,955 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:03,957 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:03,958 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:04,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:22:04,500 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:22:04,502 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:22:04,506 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:22:04,509 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:22:04,513 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:22:04,515 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:22:04,519 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:22:04,520 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:22:04,523 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:22:04,741 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:22:04,848 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:04,849 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:22:05,150 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:22:05,184 WARN L234 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_706b0cfc-098e-4e4c-b906-4ea14760ecce/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2022-11-19 07:22:05,185 WARN L234 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_706b0cfc-098e-4e4c-b906-4ea14760ecce/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2022-11-19 07:22:05,273 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,277 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,277 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,278 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,279 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,287 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,287 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,288 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,289 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,327 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 07:22:05,328 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 07:22:05,329 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 07:22:05,330 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 07:22:05,331 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 07:22:05,332 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 07:22:05,332 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 07:22:05,333 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 07:22:05,334 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 07:22:05,334 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 07:22:05,358 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 07:22:05,428 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,428 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 07:22:05,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:22:05,913 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:22:05,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05 WrapperNode [2022-11-19 07:22:05,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:22:05,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:22:05,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:22:05,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:22:05,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,228 INFO L138 Inliner]: procedures = 693, calls = 2788, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 863 [2022-11-19 07:22:06,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:22:06,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:22:06,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:22:06,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:22:06,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:22:06,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:22:06,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:22:06,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:22:06,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (1/1) ... [2022-11-19 07:22:06,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:22:06,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:22:06,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:22:06,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:22:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-11-19 07:22:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-11-19 07:22:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-19 07:22:06,474 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-19 07:22:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2022-11-19 07:22:06,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2022-11-19 07:22:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:22:06,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:22:06,475 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 07:22:06,475 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 07:22:06,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:22:06,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:22:06,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:22:06,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:22:06,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:22:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:22:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:22:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:22:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 07:22:06,478 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 07:22:06,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:22:06,478 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:22:06,478 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:22:06,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:22:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:22:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-11-19 07:22:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-11-19 07:22:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:22:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-19 07:22:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-19 07:22:06,480 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-19 07:22:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-19 07:22:06,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:22:06,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:22:06,954 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:22:06,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:22:08,753 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:22:09,096 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:22:09,096 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:22:09,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:22:09 BoogieIcfgContainer [2022-11-19 07:22:09,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:22:09,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:22:09,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:22:09,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:22:09,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:22:02" (1/3) ... [2022-11-19 07:22:09,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789bef5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:22:09, skipping insertion in model container [2022-11-19 07:22:09,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:22:05" (2/3) ... [2022-11-19 07:22:09,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789bef5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:22:09, skipping insertion in model container [2022-11-19 07:22:09,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:22:09" (3/3) ... [2022-11-19 07:22:09,114 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_cursor_harness.i [2022-11-19 07:22:09,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:22:09,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:22:09,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:22:09,247 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;@98317b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:22:09,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:22:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 52 states have internal predecessors, (64), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-19 07:22:09,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 07:22:09,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:09,267 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:22:09,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:09,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2055834612, now seen corresponding path program 1 times [2022-11-19 07:22:09,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:22:09,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523733235] [2022-11-19 07:22:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:09,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:22:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:22:10,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:22:10,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523733235] [2022-11-19 07:22:10,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523733235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:22:10,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:22:10,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:22:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589809617] [2022-11-19 07:22:10,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:22:10,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:22:10,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:22:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:22:10,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:22:10,959 INFO L87 Difference]: Start difference. First operand has 92 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 52 states have internal predecessors, (64), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:22:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:11,269 INFO L93 Difference]: Finished difference Result 157 states and 217 transitions. [2022-11-19 07:22:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:22:11,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2022-11-19 07:22:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:22:11,287 INFO L225 Difference]: With dead ends: 157 [2022-11-19 07:22:11,288 INFO L226 Difference]: Without dead ends: 119 [2022-11-19 07:22:11,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:22:11,304 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 12 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:22:11,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 335 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:22:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-19 07:22:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2022-11-19 07:22:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 68 states have internal predecessors, (84), 39 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-19 07:22:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 161 transitions. [2022-11-19 07:22:11,412 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 161 transitions. Word has length 42 [2022-11-19 07:22:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:22:11,414 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 161 transitions. [2022-11-19 07:22:11,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 07:22:11,415 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 161 transitions. [2022-11-19 07:22:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 07:22:11,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:22:11,419 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:22:11,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:22:11,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:22:11,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:22:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1179245369, now seen corresponding path program 1 times [2022-11-19 07:22:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:22:11,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322080724] [2022-11-19 07:22:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:11,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:22:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:22:20,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:22:20,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322080724] [2022-11-19 07:22:20,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322080724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:22:20,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719322358] [2022-11-19 07:22:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:22:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:22:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:22:20,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:22:20,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_706b0cfc-098e-4e4c-b906-4ea14760ecce/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:22:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:22:21,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 2465 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-19 07:22:21,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:22:21,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:22:21,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:22:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:22:27,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:22:28,582 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-11-19 07:22:50,493 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.