./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:43:59,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:43:59,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:43:59,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:43:59,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:43:59,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:43:59,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:43:59,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:43:59,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:43:59,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:43:59,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:43:59,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:43:59,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:43:59,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:43:59,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:43:59,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:43:59,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:43:59,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:43:59,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:43:59,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:43:59,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:43:59,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:43:59,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:43:59,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:43:59,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:43:59,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:43:59,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:43:59,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:43:59,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:43:59,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:43:59,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:43:59,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:43:59,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:43:59,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:43:59,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:43:59,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:43:59,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:43:59,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:43:59,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:43:59,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:43:59,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:43:59,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 10:43:59,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:43:59,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:43:59,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:43:59,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:43:59,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:43:59,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:43:59,237 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:43:59,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:43:59,237 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:43:59,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:43:59,237 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:43:59,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:43:59,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:43:59,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:43:59,238 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:43:59,238 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:43:59,238 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:43:59,238 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:43:59,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:43:59,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:43:59,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:43:59,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:43:59,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:43:59,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:43:59,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:43:59,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:43:59,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:43:59,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:43:59,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:43:59,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:43:59,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:43:59,241 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:43:59,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:43:59,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:43:59,242 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:43:59,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:43:59,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:43:59,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:43:59,243 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_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ca444cebdd8343e0a486129ff23acad574c7cfb073abcacffd6c901ccf3af [2022-12-14 10:43:59,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:43:59,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:43:59,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:43:59,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:43:59,428 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:43:59,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2022-12-14 10:44:02,010 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:44:02,378 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:44:02,379 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i [2022-12-14 10:44:02,403 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/data/27d8c15f8/d66503c401df44f3ad2d659df4fa04ef/FLAG8bfbd4097 [2022-12-14 10:44:02,414 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/data/27d8c15f8/d66503c401df44f3ad2d659df4fa04ef [2022-12-14 10:44:02,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:44:02,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:44:02,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:44:02,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:44:02,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:44:02,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:44:02" (1/1) ... [2022-12-14 10:44:02,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5809de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:02, skipping insertion in model container [2022-12-14 10:44:02,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:44:02" (1/1) ... [2022-12-14 10:44:02,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:44:02,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:44:02,690 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_93299426-f6d3-4215-9d6e-3a967bd9e5f6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2022-12-14 10:44:02,699 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_93299426-f6d3-4215-9d6e-3a967bd9e5f6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2022-12-14 10:44:03,426 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,427 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,428 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,429 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,430 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,444 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,445 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,447 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,448 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,530 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:44:03,531 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:44:03,532 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:44:03,537 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 10:44:03,539 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 10:44:03,539 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 10:44:03,793 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 10:44:03,794 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 10:44:03,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 10:44:03,796 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 10:44:03,797 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 10:44:03,798 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 10:44:03,798 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 10:44:03,799 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 10:44:03,799 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 10:44:03,799 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 10:44:03,800 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 10:44:03,919 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 10:44:03,935 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:44:03,949 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 10:44:03,956 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:44:03,983 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:03,984 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,022 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:44:04,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:44:04,058 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:44:04,068 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_93299426-f6d3-4215-9d6e-3a967bd9e5f6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4498,4511] [2022-12-14 10:44:04,068 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_93299426-f6d3-4215-9d6e-3a967bd9e5f6/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_c_str_harness.i[4558,4571] [2022-12-14 10:44:04,090 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,090 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,090 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,091 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,091 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,095 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,095 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,096 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,096 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,100 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:44:04,101 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:44:04,101 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 10:44:04,103 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 10:44:04,104 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 10:44:04,104 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 10:44:04,117 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 10:44:04,117 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 10:44:04,118 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 10:44:04,118 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 10:44:04,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 10:44:04,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 10:44:04,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 10:44:04,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 10:44:04,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 10:44:04,121 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 10:44:04,121 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 10:44:04,134 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 10:44:04,142 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:44:04,149 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 10:44:04,152 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:44:04,168 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,168 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 10:44:04,205 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:44:04,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:44:04,415 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:44:04,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04 WrapperNode [2022-12-14 10:44:04,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:44:04,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:44:04,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:44:04,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:44:04,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,540 INFO L138 Inliner]: procedures = 691, calls = 2628, calls flagged for inlining = 63, calls inlined = 9, statements flattened = 858 [2022-12-14 10:44:04,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:44:04,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:44:04,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:44:04,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:44:04,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:44:04,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:44:04,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:44:04,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:44:04,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (1/1) ... [2022-12-14 10:44:04,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:44:04,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:44:04,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:44:04,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:44:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2022-12-14 10:44:04,673 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2022-12-14 10:44:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-12-14 10:44:04,673 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-12-14 10:44:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:44:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 10:44:04,673 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 10:44:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:44:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:44:04,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:44:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:44:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:44:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-12-14 10:44:04,674 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-12-14 10:44:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:44:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:44:04,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:44:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 10:44:04,674 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 10:44:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-14 10:44:04,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-14 10:44:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:44:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:44:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:44:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:44:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:44:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 10:44:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 10:44:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:44:04,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:44:04,899 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:44:04,901 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:44:05,689 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:44:05,841 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:44:05,841 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:44:05,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:44:05 BoogieIcfgContainer [2022-12-14 10:44:05,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:44:05,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:44:05,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:44:05,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:44:05,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:44:02" (1/3) ... [2022-12-14 10:44:05,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713d8e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:44:05, skipping insertion in model container [2022-12-14 10:44:05,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:44:04" (2/3) ... [2022-12-14 10:44:05,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713d8e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:44:05, skipping insertion in model container [2022-12-14 10:44:05,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:44:05" (3/3) ... [2022-12-14 10:44:05,852 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_c_str_harness.i [2022-12-14 10:44:05,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:44:05,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:44:05,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:44:05,918 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;@5f3d0ed1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:44:05,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:44:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 52 states have (on average 1.25) internal successors, (65), 54 states have internal predecessors, (65), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-14 10:44:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 10:44:05,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:44:05,930 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:44:05,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:44:05,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:44:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1615406310, now seen corresponding path program 1 times [2022-12-14 10:44:05,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:44:05,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463613525] [2022-12-14 10:44:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:44:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:44:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:44:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-14 10:44:08,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:44:08,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463613525] [2022-12-14 10:44:08,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463613525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:44:08,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:44:08,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 10:44:08,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741410295] [2022-12-14 10:44:08,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:44:08,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:44:08,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:44:08,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:44:08,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:44:08,927 INFO L87 Difference]: Start difference. First operand has 94 states, 52 states have (on average 1.25) internal successors, (65), 54 states have internal predecessors, (65), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-14 10:44:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:44:10,396 INFO L93 Difference]: Finished difference Result 174 states and 251 transitions. [2022-12-14 10:44:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 10:44:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 79 [2022-12-14 10:44:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:44:10,408 INFO L225 Difference]: With dead ends: 174 [2022-12-14 10:44:10,408 INFO L226 Difference]: Without dead ends: 128 [2022-12-14 10:44:10,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-12-14 10:44:10,415 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 107 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:44:10,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 930 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:44:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-14 10:44:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2022-12-14 10:44:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 59 states have internal predecessors, (69), 33 states have call successors, (33), 10 states have call predecessors, (33), 11 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2022-12-14 10:44:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 135 transitions. [2022-12-14 10:44:10,457 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 135 transitions. Word has length 79 [2022-12-14 10:44:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:44:10,458 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 135 transitions. [2022-12-14 10:44:10,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-12-14 10:44:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 135 transitions. [2022-12-14 10:44:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 10:44:10,460 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:44:10,460 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:44:10,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:44:10,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:44:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:44:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1450992591, now seen corresponding path program 1 times [2022-12-14 10:44:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:44:10,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809054910] [2022-12-14 10:44:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:44:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:44:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:44:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-14 10:44:13,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:44:13,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809054910] [2022-12-14 10:44:13,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809054910] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:44:13,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352410929] [2022-12-14 10:44:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:44:13,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:44:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:44:13,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:44:13,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93299426-f6d3-4215-9d6e-3a967bd9e5f6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:44:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:44:14,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 102 conjunts are in the unsatisfiable core [2022-12-14 10:44:14,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:44:14,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:44:14,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:44:14,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:44:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 10:44:16,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:44:16,791 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-12-14 10:44:28,088 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.