./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/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_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/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_6fe1b40b-a9a3-4631-b064-14ef0ad18929/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 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- 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 22:23:57,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:23:57,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:23:57,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:23:57,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:23:57,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:23:57,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:23:57,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:23:57,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:23:57,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:23:57,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:23:57,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:23:57,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:23:57,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:23:57,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:23:57,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:23:57,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:23:57,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:23:57,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:23:57,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:23:57,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:23:57,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:23:57,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:23:57,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:23:57,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:23:57,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:23:57,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:23:57,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:23:57,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:23:57,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:23:57,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:23:57,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:23:57,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:23:57,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:23:57,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:23:57,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:23:57,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:23:57,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:23:57,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:23:57,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:23:57,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:23:57,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 22:23:57,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:23:57,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:23:57,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:23:57,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:23:57,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:23:57,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:23:57,368 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:23:57,368 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:23:57,369 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:23:57,369 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:23:57,370 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:23:57,371 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:23:57,371 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:23:57,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:23:57,372 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:23:57,372 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:23:57,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:23:57,373 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:23:57,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:23:57,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:23:57,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:23:57,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:23:57,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:23:57,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:23:57,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:23:57,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:23:57,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:23:57,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:23:57,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:23:57,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:23:57,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:23:57,379 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:23:57,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:23:57,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:23:57,380 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:23:57,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:23:57,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:23:57,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:23:57,381 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_6fe1b40b-a9a3-4631-b064-14ef0ad18929/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2022-11-25 22:23:57,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:23:57,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:23:57,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:23:57,705 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:23:57,705 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:23:57,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2022-11-25 22:24:01,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:24:01,719 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:24:01,720 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2022-11-25 22:24:01,766 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/data/e69caa3b3/554a04ad318d423881e970e389dff933/FLAG24402835b [2022-11-25 22:24:01,786 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/data/e69caa3b3/554a04ad318d423881e970e389dff933 [2022-11-25 22:24:01,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:24:01,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:24:01,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:24:01,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:24:01,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:24:01,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:24:01" (1/1) ... [2022-11-25 22:24:01,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610eb83a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:01, skipping insertion in model container [2022-11-25 22:24:01,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:24:01" (1/1) ... [2022-11-25 22:24:01,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:24:01,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:24:02,258 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_6fe1b40b-a9a3-4631-b064-14ef0ad18929/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2022-11-25 22:24:02,269 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_6fe1b40b-a9a3-4631-b064-14ef0ad18929/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2022-11-25 22:24:03,624 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:03,625 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:03,626 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:03,627 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:03,629 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:03,647 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:03,655 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:03,658 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:03,662 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:03,805 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:24:03,806 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:24:03,807 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:24:03,814 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 22:24:03,816 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 22:24:03,817 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 22:24:04,319 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 22:24:04,321 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 22:24:04,323 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 22:24:04,324 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 22:24:04,325 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 22:24:04,327 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 22:24:04,328 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 22:24:04,329 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 22:24:04,330 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 22:24:04,331 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 22:24:04,332 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 22:24:04,578 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 22:24:04,637 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:24:04,675 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 22:24:04,713 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:24:04,785 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:04,786 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:04,882 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 22:24:04,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:24:04,943 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:24:04,959 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_6fe1b40b-a9a3-4631-b064-14ef0ad18929/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2022-11-25 22:24:04,960 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_6fe1b40b-a9a3-4631-b064-14ef0ad18929/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2022-11-25 22:24:04,999 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:04,999 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,000 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,000 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,001 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,008 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,009 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,010 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,011 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,023 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:24:05,030 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:24:05,031 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:24:05,034 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 22:24:05,037 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 22:24:05,038 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 22:24:05,075 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 22:24:05,077 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 22:24:05,079 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 22:24:05,080 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 22:24:05,080 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 22:24:05,081 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 22:24:05,082 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 22:24:05,083 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 22:24:05,086 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 22:24:05,087 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 22:24:05,088 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 22:24:05,139 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 22:24:05,157 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:24:05,169 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 22:24:05,176 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:24:05,208 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,209 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:24:05,240 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 22:24:05,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:24:05,562 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:24:05,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05 WrapperNode [2022-11-25 22:24:05,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:24:05,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:24:05,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:24:05,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:24:05,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,754 INFO L138 Inliner]: procedures = 691, calls = 2655, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 920 [2022-11-25 22:24:05,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:24:05,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:24:05,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:24:05,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:24:05,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:24:05,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:24:05,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:24:05,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:24:05,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (1/1) ... [2022-11-25 22:24:05,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:24:05,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:24:05,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:24:05,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:24:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-25 22:24:05,931 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-25 22:24:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2022-11-25 22:24:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2022-11-25 22:24:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 22:24:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:24:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 22:24:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 22:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-11-25 22:24:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-11-25 22:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:24:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:24:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-25 22:24:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-25 22:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:24:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:24:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 22:24:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 22:24:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-25 22:24:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-25 22:24:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 22:24:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 22:24:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:24:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:24:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 22:24:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-25 22:24:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-25 22:24:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:24:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-25 22:24:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-25 22:24:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:24:06,335 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:24:06,338 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:24:08,007 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:24:08,329 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:24:08,329 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:24:08,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:24:08 BoogieIcfgContainer [2022-11-25 22:24:08,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:24:08,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:24:08,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:24:08,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:24:08,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:24:01" (1/3) ... [2022-11-25 22:24:08,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f359fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:24:08, skipping insertion in model container [2022-11-25 22:24:08,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:24:05" (2/3) ... [2022-11-25 22:24:08,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f359fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:24:08, skipping insertion in model container [2022-11-25 22:24:08,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:24:08" (3/3) ... [2022-11-25 22:24:08,357 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2022-11-25 22:24:08,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:24:08,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:24:08,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:24:08,499 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;@68dbda99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:24:08,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:24:08,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-25 22:24:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 22:24:08,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:24:08,521 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:24:08,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:24:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:24:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1136460855, now seen corresponding path program 1 times [2022-11-25 22:24:08,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:24:08,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378795408] [2022-11-25 22:24:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:24:08,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:24:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:24:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-25 22:24:21,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:24:21,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378795408] [2022-11-25 22:24:21,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378795408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:24:21,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288622512] [2022-11-25 22:24:21,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:24:21,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:21,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:24:21,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:24:21,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:24:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:24:22,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-25 22:24:22,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:22,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-25 22:24:23,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:24:23,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:24:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-25 22:24:24,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:24:24,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288622512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:24:24,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:24:24,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 30 [2022-11-25 22:24:24,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285895315] [2022-11-25 22:24:24,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:24:24,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:24:24,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:24:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:24:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2022-11-25 22:24:24,340 INFO L87 Difference]: Start difference. First operand has 120 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-25 22:24:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:24:25,887 INFO L93 Difference]: Finished difference Result 241 states and 338 transitions. [2022-11-25 22:24:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:24:25,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 82 [2022-11-25 22:24:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:24:25,902 INFO L225 Difference]: With dead ends: 241 [2022-11-25 22:24:25,903 INFO L226 Difference]: Without dead ends: 119 [2022-11-25 22:24:25,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2022-11-25 22:24:25,912 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 37 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:24:25,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 687 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 22:24:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-25 22:24:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-25 22:24:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-11-25 22:24:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2022-11-25 22:24:25,982 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 82 [2022-11-25 22:24:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:24:25,983 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2022-11-25 22:24:25,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.571428571428571) internal successors, (32), 9 states have internal predecessors, (32), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-25 22:24:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2022-11-25 22:24:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 22:24:25,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:24:25,988 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:24:26,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:24:26,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 22:24:26,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:24:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:24:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1337259722, now seen corresponding path program 1 times [2022-11-25 22:24:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:24:26,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325699658] [2022-11-25 22:24:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:24:26,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:24:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:24:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-25 22:24:34,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:24:34,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325699658] [2022-11-25 22:24:34,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325699658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:24:34,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705237913] [2022-11-25 22:24:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:24:34,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:34,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:24:34,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:24:34,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe1b40b-a9a3-4631-b064-14ef0ad18929/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:24:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:24:35,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-25 22:24:35,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:35,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-25 22:24:35,670 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 13 treesize of output 9 [2022-11-25 22:24:36,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-11-25 22:24:36,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:24:36,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2022-11-25 22:24:37,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-25 22:24:37,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-25 22:24:42,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2022-11-25 22:24:42,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 43 [2022-11-25 22:24:42,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:24:42,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 96 [2022-11-25 22:24:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 58 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 22:24:42,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:24:44,321 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-25 22:25:01,368 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.