./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_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_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/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_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/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_b5b64270-6285-47eb-9f35-eacff71456e0/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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- 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 04:38:57,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:38:57,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:38:57,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:38:57,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:38:57,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:38:57,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:38:57,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:38:57,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:38:57,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:38:57,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:38:57,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:38:57,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:38:57,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:38:57,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:38:57,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:38:57,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:38:57,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:38:57,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:38:57,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:38:57,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:38:57,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:38:57,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:38:57,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:38:57,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:38:57,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:38:57,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:38:57,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:38:57,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:38:57,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:38:57,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:38:57,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:38:57,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:38:57,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:38:57,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:38:57,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:38:57,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:38:57,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:38:57,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:38:57,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:38:57,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:38:57,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 04:38:57,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:38:57,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:38:57,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:38:57,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:38:57,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:38:57,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:38:57,113 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:38:57,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:38:57,114 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:38:57,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:38:57,114 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:38:57,114 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:38:57,115 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:38:57,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:38:57,115 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:38:57,115 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:38:57,115 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:38:57,116 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:38:57,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:38:57,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:38:57,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:38:57,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:38:57,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:38:57,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:38:57,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:38:57,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:38:57,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:38:57,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:38:57,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:38:57,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:38:57,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:38:57,119 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:38:57,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:38:57,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:38:57,119 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:38:57,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:38:57,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:38:57,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:38:57,120 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_b5b64270-6285-47eb-9f35-eacff71456e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2022-12-14 04:38:57,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:38:57,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:38:57,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:38:57,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:38:57,301 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:38:57,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2022-12-14 04:38:59,880 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:39:00,153 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:39:00,154 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2022-12-14 04:39:00,174 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/data/a36625325/f70f0926e0dd4d4ba5ffc0bfd4c77bf5/FLAG9a2036011 [2022-12-14 04:39:00,185 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/data/a36625325/f70f0926e0dd4d4ba5ffc0bfd4c77bf5 [2022-12-14 04:39:00,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:39:00,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:39:00,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:39:00,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:39:00,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:39:00,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:39:00" (1/1) ... [2022-12-14 04:39:00,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22686b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:00, skipping insertion in model container [2022-12-14 04:39:00,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:39:00" (1/1) ... [2022-12-14 04:39:00,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:39:00,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:39:00,442 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_b5b64270-6285-47eb-9f35-eacff71456e0/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2022-12-14 04:39:00,448 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_b5b64270-6285-47eb-9f35-eacff71456e0/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2022-12-14 04:39:01,022 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,022 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,023 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,023 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,024 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,034 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,035 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,036 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,037 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,102 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:39:01,102 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:39:01,103 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:39:01,107 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:39:01,108 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:39:01,108 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:39:01,336 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:39:01,337 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:39:01,338 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:39:01,339 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:39:01,340 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:39:01,341 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:39:01,341 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:39:01,342 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:39:01,342 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:39:01,343 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:39:01,343 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:39:01,469 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:39:01,497 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 04:39:01,506 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:39:01,531 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:39:01,537 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,538 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,581 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:39:01,589 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:39:01,590 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:39:01,593 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:39:01,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:39:01,633 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:39:01,643 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_b5b64270-6285-47eb-9f35-eacff71456e0/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2022-12-14 04:39:01,643 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_b5b64270-6285-47eb-9f35-eacff71456e0/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2022-12-14 04:39:01,666 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,667 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,667 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,667 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,668 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,671 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,672 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,672 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,673 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,677 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:39:01,677 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:39:01,678 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:39:01,680 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:39:01,680 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:39:01,681 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:39:01,694 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:39:01,695 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:39:01,695 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:39:01,696 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:39:01,696 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:39:01,697 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:39:01,697 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:39:01,697 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:39:01,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:39:01,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:39:01,698 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:39:01,728 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:39:01,750 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 04:39:01,756 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:39:01,771 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:39:01,777 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,778 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:39:01,802 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:39:01,806 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:39:01,807 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:39:01,811 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:39:01,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:39:02,066 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:39:02,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02 WrapperNode [2022-12-14 04:39:02,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:39:02,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:39:02,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:39:02,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:39:02,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,171 INFO L138 Inliner]: procedures = 693, calls = 2788, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 863 [2022-12-14 04:39:02,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:39:02,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:39:02,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:39:02,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:39:02,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,211 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:39:02,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:39:02,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:39:02,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:39:02,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (1/1) ... [2022-12-14 04:39:02,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:39:02,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:39:02,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:39:02,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:39:02,281 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-12-14 04:39:02,281 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-12-14 04:39:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-12-14 04:39:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-12-14 04:39:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2022-12-14 04:39:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2022-12-14 04:39:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 04:39:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:39:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 04:39:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 04:39:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:39:02,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 04:39:02,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 04:39:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:39:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:39:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:39:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:39:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:39:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 04:39:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 04:39:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 04:39:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 04:39:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 04:39:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:39:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:39:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-12-14 04:39:02,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-12-14 04:39:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 04:39:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 04:39:02,284 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 04:39:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 04:39:02,284 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 04:39:02,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:39:02,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:39:02,477 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:39:02,479 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:39:03,322 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:39:03,463 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:39:03,463 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 04:39:03,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:39:03 BoogieIcfgContainer [2022-12-14 04:39:03,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:39:03,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:39:03,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:39:03,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:39:03,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:39:00" (1/3) ... [2022-12-14 04:39:03,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732611ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:39:03, skipping insertion in model container [2022-12-14 04:39:03,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:39:02" (2/3) ... [2022-12-14 04:39:03,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732611ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:39:03, skipping insertion in model container [2022-12-14 04:39:03,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:39:03" (3/3) ... [2022-12-14 04:39:03,474 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_cursor_harness.i [2022-12-14 04:39:03,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:39:03,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:39:03,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:39:03,533 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;@68d8e530, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:39:03,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:39:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 52 states have internal predecessors, (64), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-14 04:39:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 04:39:03,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:39:03,547 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 04:39:03,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:39:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:39:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1658045203, now seen corresponding path program 1 times [2022-12-14 04:39:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:39:03,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21291040] [2022-12-14 04:39:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:39:03,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:39:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:39:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 04:39:04,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:39:04,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21291040] [2022-12-14 04:39:04,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21291040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:39:04,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:39:04,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 04:39:04,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827176816] [2022-12-14 04:39:04,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:39:04,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:39:04,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:39:04,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:39:04,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:39:04,323 INFO L87 Difference]: Start difference. First operand has 92 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 52 states have internal predecessors, (64), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 04:39:04,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:39:04,500 INFO L93 Difference]: Finished difference Result 157 states and 217 transitions. [2022-12-14 04:39:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:39:04,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2022-12-14 04:39:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:39:04,512 INFO L225 Difference]: With dead ends: 157 [2022-12-14 04:39:04,513 INFO L226 Difference]: Without dead ends: 119 [2022-12-14 04:39:04,516 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 [2022-12-14 04:39:04,527 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 12 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:39:04,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 335 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:39:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-14 04:39:04,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2022-12-14 04:39:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 68 states have internal predecessors, (84), 39 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-12-14 04:39:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 161 transitions. [2022-12-14 04:39:04,572 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 161 transitions. Word has length 42 [2022-12-14 04:39:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:39:04,573 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 161 transitions. [2022-12-14 04:39:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-14 04:39:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 161 transitions. [2022-12-14 04:39:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 04:39:04,576 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:39:04,576 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 04:39:04,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:39:04,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:39:04,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:39:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1577034778, now seen corresponding path program 1 times [2022-12-14 04:39:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:39:04,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911748890] [2022-12-14 04:39:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:39:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:39:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:39:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 04:39:08,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:39:08,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911748890] [2022-12-14 04:39:08,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911748890] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:39:08,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949042281] [2022-12-14 04:39:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:39:08,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:39:08,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:39:08,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:39:08,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5b64270-6285-47eb-9f35-eacff71456e0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:39:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:39:09,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 2465 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-14 04:39:09,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:39:09,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 04:39:09,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 04:39:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 04:39:11,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:39:12,622 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-12-14 04:39:23,725 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.