./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7 --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 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:54:03,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:54:03,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:54:04,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:54:04,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:54:04,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:54:04,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:54:04,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:54:04,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:54:04,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:54:04,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:54:04,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:54:04,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:54:04,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:54:04,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:54:04,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:54:04,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:54:04,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:54:04,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:54:04,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:54:04,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:54:04,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:54:04,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:54:04,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:54:04,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:54:04,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:54:04,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:54:04,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:54:04,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:54:04,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:54:04,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:54:04,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:54:04,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:54:04,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:54:04,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:54:04,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:54:04,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:54:04,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:54:04,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:54:04,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:54:04,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:54:04,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:54:04,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:54:04,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:54:04,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:54:04,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:54:04,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:54:04,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:54:04,096 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:54:04,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:54:04,096 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:54:04,096 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:54:04,096 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:54:04,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:54:04,097 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:54:04,097 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:54:04,097 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:54:04,097 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:54:04,098 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:54:04,098 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:54:04,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:54:04,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:54:04,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:54:04,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:54:04,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:54:04,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:54:04,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:54:04,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:54:04,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:54:04,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:54:04,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:54:04,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:54:04,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:54:04,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:54:04,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:54:04,101 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:54:04,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:54:04,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:54:04,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:54:04,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:54:04,102 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2021-11-25 19:54:04,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:54:04,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:54:04,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:54:04,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:54:04,430 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:54:04,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-25 19:54:04,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/data/4f64d6ed2/35552cb0bdb542b8a81fda2724715747/FLAG6e0645c5e [2021-11-25 19:54:05,368 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:54:05,369 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2021-11-25 19:54:05,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/data/4f64d6ed2/35552cb0bdb542b8a81fda2724715747/FLAG6e0645c5e [2021-11-25 19:54:05,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/data/4f64d6ed2/35552cb0bdb542b8a81fda2724715747 [2021-11-25 19:54:05,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:54:05,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:54:05,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:54:05,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:54:05,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:54:05,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:54:05" (1/1) ... [2021-11-25 19:54:05,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740c7ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:05, skipping insertion in model container [2021-11-25 19:54:05,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:54:05" (1/1) ... [2021-11-25 19:54:05,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:54:05,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:54:06,265 WARN L230 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_145bade5-5c84-4931-a12c-2b946a4d96bb/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-25 19:54:06,271 WARN L230 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_145bade5-5c84-4931-a12c-2b946a4d96bb/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-25 19:54:07,295 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:07,296 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:07,296 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:07,297 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:07,298 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:07,311 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:07,311 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:07,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:07,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:07,800 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:54:07,802 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:54:07,803 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:54:07,804 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:54:07,808 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:54:07,810 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:54:07,812 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:54:07,813 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:54:07,815 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:54:07,818 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:54:07,976 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:54:08,116 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,117 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:54:08,247 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:54:08,277 WARN L230 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_145bade5-5c84-4931-a12c-2b946a4d96bb/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2021-11-25 19:54:08,277 WARN L230 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_145bade5-5c84-4931-a12c-2b946a4d96bb/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2021-11-25 19:54:08,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,387 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:54:08,390 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:54:08,391 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:54:08,394 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:54:08,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:54:08,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:54:08,399 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:54:08,399 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:54:08,400 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:54:08,400 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:54:08,425 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:54:08,515 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,516 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:54:08,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:54:08,891 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:54:08,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08 WrapperNode [2021-11-25 19:54:08,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:54:08,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:54:08,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:54:08,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:54:08,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,107 INFO L137 Inliner]: procedures = 690, calls = 2639, calls flagged for inlining = 61, calls inlined = 9, statements flattened = 868 [2021-11-25 19:54:09,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:54:09,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:54:09,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:54:09,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:54:09,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:54:09,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:54:09,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:54:09,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:54:09,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (1/1) ... [2021-11-25 19:54:09,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:54:09,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:09,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:54:09,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:54:09,313 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-25 19:54:09,313 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-25 19:54:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-25 19:54:09,314 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-25 19:54:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:54:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 19:54:09,316 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 19:54:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:54:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:54:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:54:09,317 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_from_buf [2021-11-25 19:54:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_from_buf [2021-11-25 19:54:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:54:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:54:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:54:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:54:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:54:09,318 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 19:54:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 19:54:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-25 19:54:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-25 19:54:09,319 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:54:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:54:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:54:09,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:54:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:54:09,321 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 19:54:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 19:54:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 19:54:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 19:54:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:54:09,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:54:09,618 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:54:09,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:54:11,059 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:54:11,335 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:54:11,336 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:54:11,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:54:11 BoogieIcfgContainer [2021-11-25 19:54:11,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:54:11,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:54:11,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:54:11,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:54:11,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:54:05" (1/3) ... [2021-11-25 19:54:11,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25db291b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:54:11, skipping insertion in model container [2021-11-25 19:54:11,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:08" (2/3) ... [2021-11-25 19:54:11,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25db291b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:54:11, skipping insertion in model container [2021-11-25 19:54:11,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:54:11" (3/3) ... [2021-11-25 19:54:11,349 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2021-11-25 19:54:11,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:54:11,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:54:11,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:54:11,462 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:54:11,465 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:54:11,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 48 states have (on average 1.1875) internal successors, (57), 49 states have internal predecessors, (57), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-25 19:54:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 19:54:11,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:11,498 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-25 19:54:11,498 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:54:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2075530696, now seen corresponding path program 1 times [2021-11-25 19:54:11,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:11,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419771396] [2021-11-25 19:54:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:11,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:54:13,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:13,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419771396] [2021-11-25 19:54:13,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419771396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:13,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:13,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-25 19:54:13,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619109251] [2021-11-25 19:54:13,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:13,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 19:54:13,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 19:54:13,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:54:13,222 INFO L87 Difference]: Start difference. First operand has 88 states, 48 states have (on average 1.1875) internal successors, (57), 49 states have internal predecessors, (57), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-25 19:54:14,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:14,619 INFO L93 Difference]: Finished difference Result 191 states and 276 transitions. [2021-11-25 19:54:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 19:54:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2021-11-25 19:54:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:14,645 INFO L225 Difference]: With dead ends: 191 [2021-11-25 19:54:14,645 INFO L226 Difference]: Without dead ends: 128 [2021-11-25 19:54:14,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-11-25 19:54:14,653 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 87 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:14,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 961 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 19:54:14,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-25 19:54:14,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 98. [2021-11-25 19:54:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-25 19:54:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2021-11-25 19:54:14,777 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 43 [2021-11-25 19:54:14,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:14,778 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2021-11-25 19:54:14,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-25 19:54:14,779 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2021-11-25 19:54:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 19:54:14,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:14,784 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-25 19:54:14,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:54:14,784 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:54:14,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1091548635, now seen corresponding path program 1 times [2021-11-25 19:54:14,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:14,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322526910] [2021-11-25 19:54:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:14,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 19:54:16,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:16,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322526910] [2021-11-25 19:54:16,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322526910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:54:16,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:54:16,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-25 19:54:16,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633865245] [2021-11-25 19:54:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:54:16,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 19:54:16,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:54:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 19:54:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:54:16,883 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 9 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-25 19:54:18,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:54:18,541 INFO L93 Difference]: Finished difference Result 134 states and 173 transitions. [2021-11-25 19:54:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 19:54:18,549 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 9 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 47 [2021-11-25 19:54:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:54:18,552 INFO L225 Difference]: With dead ends: 134 [2021-11-25 19:54:18,552 INFO L226 Difference]: Without dead ends: 132 [2021-11-25 19:54:18,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2021-11-25 19:54:18,555 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 51 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:54:18,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 1105 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 19:54:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-25 19:54:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 88. [2021-11-25 19:54:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 48 states have (on average 1.125) internal successors, (54), 49 states have internal predecessors, (54), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-25 19:54:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2021-11-25 19:54:18,577 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 47 [2021-11-25 19:54:18,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:54:18,578 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2021-11-25 19:54:18,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 9 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-25 19:54:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2021-11-25 19:54:18,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 19:54:18,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:54:18,581 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:54:18,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:54:18,582 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:54:18,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:54:18,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1403934463, now seen corresponding path program 1 times [2021-11-25 19:54:18,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:54:18,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620132734] [2021-11-25 19:54:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:18,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:54:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:54:21,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:54:21,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620132734] [2021-11-25 19:54:21,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620132734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:54:21,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664999054] [2021-11-25 19:54:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:54:21,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:54:21,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:54:21,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:54:21,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_145bade5-5c84-4931-a12c-2b946a4d96bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:54:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:54:22,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-25 19:54:22,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:54:22,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:54:22,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:54:23,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-25 19:54:23,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-11-25 19:54:26,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-11-25 19:54:27,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:54:27,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-11-25 19:54:27,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-25 19:54:31,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:31,846 INFO L354 Elim1Store]: treesize reduction 183, result has 33.9 percent of original size [2021-11-25 19:54:31,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 101 treesize of output 176 [2021-11-25 19:54:31,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-11-25 19:54:34,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-25 19:54:34,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-11-25 19:54:34,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:34,378 INFO L354 Elim1Store]: treesize reduction 41, result has 22.6 percent of original size [2021-11-25 19:54:34,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 50 [2021-11-25 19:54:34,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:54:34,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:34,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:34,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2021-11-25 19:54:34,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:34,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:34,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 33 [2021-11-25 19:54:34,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:34,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:34,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2021-11-25 19:54:44,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:44,185 INFO L354 Elim1Store]: treesize reduction 183, result has 33.9 percent of original size [2021-11-25 19:54:44,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 101 treesize of output 176 [2021-11-25 19:54:44,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2021-11-25 19:54:45,134 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:54:45,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:45,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:45,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 24 [2021-11-25 19:54:45,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:45,256 INFO L354 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2021-11-25 19:54:45,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 45 [2021-11-25 19:54:45,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-11-25 19:54:45,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-11-25 19:54:45,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:45,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:45,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2021-11-25 19:54:45,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:45,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:54:45,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 34 [2021-11-25 19:55:04,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-11-25 19:55:04,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:04,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:04,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:55:04,374 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:55:04,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 49 [2021-11-25 19:55:07,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 96 [2021-11-25 19:55:07,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 84 [2021-11-25 19:55:07,470 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:55:07,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 99 [2021-11-25 19:55:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:55:07,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:55:10,184 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-25 20:01:57,161 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.