./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur --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 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c --- 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-38b53e6 [2022-11-25 22:27:09,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:27:09,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:27:09,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:27:09,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:27:09,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:27:09,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:27:09,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:27:09,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:27:09,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:27:09,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:27:09,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:27:09,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:27:09,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:27:09,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:27:09,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:27:09,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:27:09,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:27:09,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:27:09,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:27:09,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:27:09,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:27:09,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:27:09,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:27:09,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:27:09,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:27:09,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:27:09,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:27:09,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:27:09,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:27:09,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:27:09,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:27:09,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:27:10,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:27:10,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:27:10,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:27:10,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:27:10,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:27:10,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:27:10,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:27:10,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:27:10,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 22:27:10,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:27:10,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:27:10,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:27:10,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:27:10,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:27:10,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:27:10,060 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:27:10,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:27:10,061 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:27:10,061 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:27:10,062 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:27:10,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:27:10,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:27:10,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:27:10,063 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:27:10,064 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:27:10,064 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:27:10,064 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:27:10,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:27:10,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:27:10,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:27:10,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:27:10,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:27:10,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:27:10,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:27:10,067 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:27:10,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:27:10,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:27:10,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:27:10,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:27:10,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:27:10,069 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:27:10,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:27:10,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:27:10,069 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:27:10,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:27:10,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:27:10,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:27:10,070 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_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 704abadf4a8c9a8af61418181b8ae91b3e3da2fe96f0fde7751e748b781a863c [2022-11-25 22:27:10,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:27:10,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:27:10,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:27:10,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:27:10,411 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:27:10,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2022-11-25 22:27:13,520 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:27:14,091 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:27:14,092 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i [2022-11-25 22:27:14,130 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/data/cea8eac2b/2aa42a1fa79642699e16f0f107bbeeb3/FLAG61fbd6559 [2022-11-25 22:27:14,151 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/data/cea8eac2b/2aa42a1fa79642699e16f0f107bbeeb3 [2022-11-25 22:27:14,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:27:14,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:27:14,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:27:14,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:27:14,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:27:14,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:27:14" (1/1) ... [2022-11-25 22:27:14,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d4b0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:14, skipping insertion in model container [2022-11-25 22:27:14,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:27:14" (1/1) ... [2022-11-25 22:27:14,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:27:14,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:27:14,600 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_ec1907f7-3371-4678-83d7-fbfc27a4d85a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2022-11-25 22:27:14,615 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_ec1907f7-3371-4678-83d7-fbfc27a4d85a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2022-11-25 22:27:16,060 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:16,064 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:16,065 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:16,069 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:16,071 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:16,097 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:16,098 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:16,119 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:16,119 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:16,236 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:27:16,237 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:27:16,238 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:27:16,259 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 22:27:16,261 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 22:27:16,262 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 22:27:16,701 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 22:27:16,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 22:27:16,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 22:27:16,705 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 22:27:16,707 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 22:27:16,709 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 22:27:16,709 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 22:27:16,710 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 22:27:16,711 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 22:27:16,712 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 22:27:16,712 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 22:27:16,963 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 22:27:17,019 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 22:27:17,031 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:27:17,081 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:27:17,101 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,101 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,167 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 22:27:17,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:27:17,219 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:27:17,230 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_ec1907f7-3371-4678-83d7-fbfc27a4d85a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4500,4513] [2022-11-25 22:27:17,231 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_ec1907f7-3371-4678-83d7-fbfc27a4d85a/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_array_harness.i[4560,4573] [2022-11-25 22:27:17,279 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,280 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,280 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,281 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,281 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,288 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,288 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,289 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,290 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,297 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:27:17,297 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:27:17,298 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:27:17,301 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 22:27:17,302 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 22:27:17,303 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 22:27:17,323 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 22:27:17,324 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 22:27:17,325 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 22:27:17,326 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 22:27:17,327 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 22:27:17,328 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 22:27:17,328 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 22:27:17,329 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 22:27:17,330 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 22:27:17,330 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 22:27:17,331 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 22:27:17,351 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 22:27:17,373 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 22:27:17,379 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:27:17,398 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:27:17,406 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,406 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:27:17,440 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 22:27:17,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:27:17,763 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:27:17,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17 WrapperNode [2022-11-25 22:27:17,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:27:17,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:27:17,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:27:17,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:27:17,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:17,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,001 INFO L138 Inliner]: procedures = 690, calls = 2608, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 776 [2022-11-25 22:27:18,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:27:18,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:27:18,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:27:18,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:27:18,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,065 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:27:18,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:27:18,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:27:18,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:27:18,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (1/1) ... [2022-11-25 22:27:18,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:27:18,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:18,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:27:18,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:27:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-25 22:27:18,186 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-25 22:27:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:27:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:27:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:27:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:27:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:27:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:27:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:27:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:27:18,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:27:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 22:27:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 22:27:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 22:27:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 22:27:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:27:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:27:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 22:27:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-25 22:27:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-25 22:27:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:27:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:27:18,494 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:27:18,497 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:27:19,841 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:27:20,102 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:27:20,102 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:27:20,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:27:20 BoogieIcfgContainer [2022-11-25 22:27:20,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:27:20,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:27:20,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:27:20,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:27:20,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:27:14" (1/3) ... [2022-11-25 22:27:20,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6feefa6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:27:20, skipping insertion in model container [2022-11-25 22:27:20,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:27:17" (2/3) ... [2022-11-25 22:27:20,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6feefa6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:27:20, skipping insertion in model container [2022-11-25 22:27:20,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:27:20" (3/3) ... [2022-11-25 22:27:20,122 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_array_harness.i [2022-11-25 22:27:20,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:27:20,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:27:20,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:27:20,232 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;@68692b86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:27:20,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:27:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-25 22:27:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 22:27:20,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:20,252 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:20,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:27:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1726220798, now seen corresponding path program 1 times [2022-11-25 22:27:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:27:20,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900949043] [2022-11-25 22:27:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:20,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:27:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:27:27,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:27:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900949043] [2022-11-25 22:27:27,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900949043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:27,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:27,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 22:27:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110784179] [2022-11-25 22:27:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:27,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 22:27:27,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:27:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 22:27:27,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:27:27,203 INFO L87 Difference]: Start difference. First operand has 41 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 22:27:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:27,714 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2022-11-25 22:27:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:27:27,717 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2022-11-25 22:27:27,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:27,727 INFO L225 Difference]: With dead ends: 75 [2022-11-25 22:27:27,728 INFO L226 Difference]: Without dead ends: 41 [2022-11-25 22:27:27,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:27:27,747 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:27,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 275 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:27:27,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-25 22:27:27,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-25 22:27:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-25 22:27:27,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-11-25 22:27:27,807 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 20 [2022-11-25 22:27:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:27,809 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-11-25 22:27:27,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 22:27:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-11-25 22:27:27,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 22:27:27,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:27,812 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 22:27:27,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:27:27,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:27:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:27,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1561058022, now seen corresponding path program 1 times [2022-11-25 22:27:27,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:27:27,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133379240] [2022-11-25 22:27:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:27,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:27:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:27:35,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:27:35,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133379240] [2022-11-25 22:27:35,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133379240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:27:35,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795039046] [2022-11-25 22:27:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:35,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:35,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:35,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:27:35,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1907f7-3371-4678-83d7-fbfc27a4d85a/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:27:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:35,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-25 22:27:35,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:36,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-25 22:27:40,421 INFO L321 Elim1Store]: treesize reduction 24, result has 65.2 percent of original size [2022-11-25 22:27:40,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 110 [2022-11-25 22:27:40,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2022-11-25 22:27:40,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-11-25 22:27:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:40,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:41,831 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-25 22:27:56,964 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.