./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_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_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/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_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/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_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/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 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce --- 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 23:29:56,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:29:56,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:29:56,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:29:56,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:29:56,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:29:56,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:29:56,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:29:56,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:29:56,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:29:56,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:29:56,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:29:56,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:29:56,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:29:56,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:29:56,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:29:56,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:29:56,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:29:56,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:29:56,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:29:56,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:29:56,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:29:56,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:29:56,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:29:56,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:29:56,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:29:56,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:29:56,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:29:56,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:29:56,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:29:56,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:29:56,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:29:56,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:29:56,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:29:56,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:29:56,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:29:56,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:29:56,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:29:56,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:29:56,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:29:56,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:29:56,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:29:56,827 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:29:56,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:29:56,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:29:56,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:29:56,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:29:56,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:29:56,829 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:29:56,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:29:56,830 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:29:56,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:29:56,830 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:29:56,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:29:56,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:29:56,831 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:29:56,831 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:29:56,831 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:29:56,831 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:29:56,832 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:29:56,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:29:56,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:29:56,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:29:56,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:29:56,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:29:56,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:29:56,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:29:56,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:29:56,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:29:56,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:29:56,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:29:56,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:29:56,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:29:56,835 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:29:56,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:29:56,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:29:56,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:29:56,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:29:56,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:29:56,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:29:56,836 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_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a4e17497471d2fff231bad199d28dc26e616d1fdaf7fc57a8b45b8dfdd40ce [2022-11-25 23:29:57,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:29:57,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:29:57,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:29:57,160 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:29:57,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:29:57,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2022-11-25 23:30:00,198 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:30:00,744 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:30:00,745 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i [2022-11-25 23:30:00,786 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/data/6a08687a1/cb7d2a9119204af4867e9cea81e17c66/FLAGdaae5349c [2022-11-25 23:30:00,804 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/data/6a08687a1/cb7d2a9119204af4867e9cea81e17c66 [2022-11-25 23:30:00,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:30:00,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:30:00,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:00,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:30:00,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:30:00,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:00" (1/1) ... [2022-11-25 23:30:00,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45966c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:00, skipping insertion in model container [2022-11-25 23:30:00,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:00" (1/1) ... [2022-11-25 23:30:00,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:30:00,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:30:01,243 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_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2022-11-25 23:30:01,255 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_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2022-11-25 23:30:02,435 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:02,436 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:02,436 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:02,437 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:02,438 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:02,452 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:02,453 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:02,456 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:02,456 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:02,538 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:30:02,538 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:30:02,539 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:30:02,545 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:30:02,547 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:30:02,548 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:30:02,863 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:30:02,865 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:30:02,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:30:02,867 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:30:02,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:30:02,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:30:02,871 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:30:02,872 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:30:02,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:30:02,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:30:02,874 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:30:03,091 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:30:03,178 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:30:03,190 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:03,247 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:03,256 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,256 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,315 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:30:03,331 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:30:03,333 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:30:03,339 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:03,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:03,424 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:30:03,439 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_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4496,4509] [2022-11-25 23:30:03,439 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_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_buf_harness.i[4556,4569] [2022-11-25 23:30:03,476 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,477 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,477 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,478 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,478 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,490 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,491 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,492 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,493 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,501 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:30:03,506 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:30:03,507 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:30:03,511 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:30:03,512 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:30:03,512 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:30:03,552 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:30:03,553 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:30:03,554 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:30:03,555 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:30:03,560 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:30:03,562 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:30:03,562 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:30:03,563 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:30:03,564 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:30:03,565 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:30:03,566 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:30:03,594 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:30:03,647 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:30:03,655 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:03,678 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:03,687 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,687 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:30:03,729 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:30:03,733 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:30:03,734 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:30:03,743 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:30:03,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:04,042 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:30:04,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04 WrapperNode [2022-11-25 23:30:04,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:04,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:30:04,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:30:04,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:30:04,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,263 INFO L138 Inliner]: procedures = 693, calls = 2791, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 873 [2022-11-25 23:30:04,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:30:04,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:30:04,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:30:04,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:30:04,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:30:04,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:30:04,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:30:04,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:30:04,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (1/1) ... [2022-11-25 23:30:04,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:30:04,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:30:04,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:30:04,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:30:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-11-25 23:30:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-11-25 23:30:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-25 23:30:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-25 23:30:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2022-11-25 23:30:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2022-11-25 23:30:04,494 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 23:30:04,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:30:04,494 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 23:30:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 23:30:04,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:30:04,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 23:30:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 23:30:04,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:30:04,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:30:04,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:30:04,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:30:04,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:30:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 23:30:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 23:30:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 23:30:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:30:04,497 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:30:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:30:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:30:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-11-25 23:30:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-11-25 23:30:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:30:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-25 23:30:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-25 23:30:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-25 23:30:04,499 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-25 23:30:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:30:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:30:04,860 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:30:04,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:30:06,338 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:30:06,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:30:06,642 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:30:06,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:30:06 BoogieIcfgContainer [2022-11-25 23:30:06,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:30:06,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:30:06,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:30:06,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:30:06,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:30:00" (1/3) ... [2022-11-25 23:30:06,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3473d009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:30:06, skipping insertion in model container [2022-11-25 23:30:06,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:04" (2/3) ... [2022-11-25 23:30:06,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3473d009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:30:06, skipping insertion in model container [2022-11-25 23:30:06,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:30:06" (3/3) ... [2022-11-25 23:30:06,669 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_harness.i [2022-11-25 23:30:06,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:30:06,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:30:06,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:30:06,766 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;@7a56a953, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:30:06,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:30:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 52 states have internal predecessors, (62), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-25 23:30:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 23:30:06,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:06,783 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:06,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:06,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2113904576, now seen corresponding path program 1 times [2022-11-25 23:30:06,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:06,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728086076] [2022-11-25 23:30:06,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:06,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 23:30:08,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:08,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728086076] [2022-11-25 23:30:08,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728086076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:08,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:08,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:30:08,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65514242] [2022-11-25 23:30:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:08,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:30:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:08,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:30:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:30:08,308 INFO L87 Difference]: Start difference. First operand has 94 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 52 states have internal predecessors, (62), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 23:30:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:08,563 INFO L93 Difference]: Finished difference Result 161 states and 221 transitions. [2022-11-25 23:30:08,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:30:08,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 51 [2022-11-25 23:30:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:08,578 INFO L225 Difference]: With dead ends: 161 [2022-11-25 23:30:08,579 INFO L226 Difference]: Without dead ends: 125 [2022-11-25 23:30:08,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:30:08,591 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 12 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:08,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 347 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:30:08,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-25 23:30:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2022-11-25 23:30:08,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 70 states have internal predecessors, (84), 43 states have call successors, (43), 10 states have call predecessors, (43), 10 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-25 23:30:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2022-11-25 23:30:08,678 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 51 [2022-11-25 23:30:08,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:08,680 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2022-11-25 23:30:08,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 23:30:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2022-11-25 23:30:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:30:08,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:08,686 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:08,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:30:08,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash -819770497, now seen corresponding path program 1 times [2022-11-25 23:30:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:08,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578487450] [2022-11-25 23:30:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:08,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 23:30:21,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:21,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578487450] [2022-11-25 23:30:21,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578487450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:30:21,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928975569] [2022-11-25 23:30:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:21,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:30:21,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:30:21,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:30:21,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f3eabb3-e9dc-4b72-ac94-fabaf0fbc1e7/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:30:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:21,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-25 23:30:21,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:30:22,209 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 23:30:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:30:30,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:30:33,072 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-25 23:38:04,271 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.