./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba --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 f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af --- 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-b5237d8 [2022-11-22 00:32:31,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:32:31,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:32:32,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:32:32,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:32:32,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:32:32,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:32:32,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:32:32,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:32:32,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:32:32,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:32:32,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:32:32,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:32:32,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:32:32,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:32:32,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:32:32,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:32:32,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:32:32,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:32:32,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:32:32,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:32:32,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:32:32,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:32:32,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:32:32,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:32:32,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:32:32,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:32:32,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:32:32,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:32:32,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:32:32,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:32:32,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:32:32,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:32:32,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:32:32,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:32:32,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:32:32,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:32:32,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:32:32,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:32:32,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:32:32,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:32:32,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:32:32,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:32:32,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:32:32,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:32:32,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:32:32,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:32:32,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:32:32,160 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:32:32,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:32:32,160 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:32:32,160 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:32:32,162 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:32:32,162 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:32:32,162 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:32:32,162 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:32:32,163 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:32:32,163 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:32:32,163 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:32:32,163 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:32:32,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:32:32,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:32:32,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:32:32,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:32:32,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:32:32,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:32:32,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:32:32,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:32:32,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:32:32,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:32:32,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:32:32,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:32:32,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:32:32,168 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:32:32,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:32:32,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:32:32,169 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:32:32,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:32:32,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:32:32,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:32:32,170 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_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2022-11-22 00:32:32,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:32:32,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:32:32,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:32:32,574 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:32:32,574 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:32:32,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2022-11-22 00:32:35,672 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:32:36,285 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:32:36,285 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2022-11-22 00:32:36,344 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/data/3f4a68c64/734b4fdfe60e4828af682aafcf9eee5f/FLAGcccde0125 [2022-11-22 00:32:36,366 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/data/3f4a68c64/734b4fdfe60e4828af682aafcf9eee5f [2022-11-22 00:32:36,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:32:36,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:32:36,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:32:36,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:32:36,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:32:36,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:36" (1/1) ... [2022-11-22 00:32:36,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19328634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:36, skipping insertion in model container [2022-11-22 00:32:36,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:32:36" (1/1) ... [2022-11-22 00:32:36,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:32:36,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:32:36,921 WARN L237 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_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2022-11-22 00:32:36,936 WARN L237 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_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2022-11-22 00:32:38,159 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:38,160 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:38,161 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:38,162 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:38,163 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:38,178 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:38,179 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:38,181 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:38,182 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:38,699 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 00:32:38,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 00:32:38,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 00:32:38,706 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 00:32:38,709 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 00:32:38,716 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 00:32:38,717 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 00:32:38,718 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 00:32:38,723 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 00:32:38,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 00:32:38,948 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 00:32:39,086 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,087 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:32:39,230 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:32:39,262 WARN L237 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_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2022-11-22 00:32:39,264 WARN L237 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_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2022-11-22 00:32:39,326 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,327 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,327 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,328 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,329 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,344 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,345 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,346 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,346 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,407 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 00:32:39,408 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 00:32:39,409 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 00:32:39,410 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 00:32:39,411 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 00:32:39,411 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 00:32:39,415 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 00:32:39,415 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 00:32:39,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 00:32:39,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 00:32:39,449 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 00:32:39,587 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,594 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:32:39,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:32:39,927 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:32:39,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39 WrapperNode [2022-11-22 00:32:39,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:32:39,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:32:39,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:32:39,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:32:39,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,201 INFO L138 Inliner]: procedures = 691, calls = 2628, calls flagged for inlining = 63, calls inlined = 9, statements flattened = 858 [2022-11-22 00:32:40,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:32:40,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:32:40,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:32:40,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:32:40,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,312 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:32:40,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:32:40,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:32:40,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:32:40,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (1/1) ... [2022-11-22 00:32:40,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:32:40,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:40,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:32:40,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:32:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2022-11-22 00:32:40,453 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2022-11-22 00:32:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-22 00:32:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-22 00:32:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:32:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-22 00:32:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-22 00:32:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:32:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 00:32:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 00:32:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:32:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:32:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-22 00:32:40,458 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-22 00:32:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:32:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:32:40,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:32:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-22 00:32:40,459 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-22 00:32:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-22 00:32:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-22 00:32:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 00:32:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 00:32:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:32:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:32:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:32:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-22 00:32:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-22 00:32:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:32:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:32:40,795 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:32:40,798 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:32:42,356 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:32:42,639 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:32:42,639 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 00:32:42,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:42 BoogieIcfgContainer [2022-11-22 00:32:42,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:32:42,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:32:42,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:32:42,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:32:42,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:32:36" (1/3) ... [2022-11-22 00:32:42,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fb942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:32:42, skipping insertion in model container [2022-11-22 00:32:42,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:32:39" (2/3) ... [2022-11-22 00:32:42,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fb942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:32:42, skipping insertion in model container [2022-11-22 00:32:42,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:32:42" (3/3) ... [2022-11-22 00:32:42,654 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_c_str_harness.i [2022-11-22 00:32:42,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:32:42,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:32:42,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:32:42,771 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;@1a9d889e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:32:42,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:32:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 52 states have (on average 1.25) internal successors, (65), 54 states have internal predecessors, (65), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-22 00:32:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-22 00:32:42,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:42,791 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:42,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash -185301531, now seen corresponding path program 1 times [2022-11-22 00:32:42,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:42,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947613551] [2022-11-22 00:32:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-22 00:32:48,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:48,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947613551] [2022-11-22 00:32:48,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947613551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:48,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:48,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 00:32:48,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315532003] [2022-11-22 00:32:48,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:48,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 00:32:48,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:48,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 00:32:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:32:48,522 INFO L87 Difference]: Start difference. First operand has 94 states, 52 states have (on average 1.25) internal successors, (65), 54 states have internal predecessors, (65), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-22 00:32:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:50,189 INFO L93 Difference]: Finished difference Result 174 states and 251 transitions. [2022-11-22 00:32:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 00:32:50,193 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 79 [2022-11-22 00:32:50,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:50,209 INFO L225 Difference]: With dead ends: 174 [2022-11-22 00:32:50,210 INFO L226 Difference]: Without dead ends: 128 [2022-11-22 00:32:50,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-22 00:32:50,228 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 110 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:50,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 930 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 00:32:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-22 00:32:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2022-11-22 00:32:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 59 states have internal predecessors, (69), 33 states have call successors, (33), 10 states have call predecessors, (33), 11 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2022-11-22 00:32:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 135 transitions. [2022-11-22 00:32:50,342 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 135 transitions. Word has length 79 [2022-11-22 00:32:50,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:50,345 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 135 transitions. [2022-11-22 00:32:50,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-22 00:32:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 135 transitions. [2022-11-22 00:32:50,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 00:32:50,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:50,354 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:50,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:32:50,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:50,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1463624368, now seen corresponding path program 1 times [2022-11-22 00:32:50,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:50,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068754700] [2022-11-22 00:32:50,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:50,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-22 00:32:57,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:57,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068754700] [2022-11-22 00:32:57,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068754700] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:57,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208039637] [2022-11-22 00:32:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:57,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:57,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:57,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:57,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c70b4-1814-418e-9b1b-42fa7ae026bd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:32:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:58,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-22 00:32:58,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:58,788 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 6 treesize of output 5 [2022-11-22 00:32:58,793 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 6 treesize of output 5 [2022-11-22 00:32:58,802 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 6 treesize of output 5 [2022-11-22 00:33:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-22 00:33:01,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:33:02,895 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-22 00:33:18,347 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.