./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_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_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/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_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/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_b14f5d0d-2e22-49c4-b497-b0d687213e87/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 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d --- 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 06:49:38,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:49:38,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:49:38,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:49:38,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:49:38,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:49:38,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:49:38,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:49:38,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:49:38,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:49:38,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:49:38,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:49:38,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:49:38,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:49:38,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:49:38,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:49:38,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:49:38,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:49:38,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:49:38,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:49:38,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:49:38,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:49:38,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:49:38,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:49:38,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:49:38,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:49:38,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:49:38,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:49:38,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:49:38,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:49:38,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:49:38,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:49:38,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:49:38,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:49:38,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:49:38,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:49:38,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:49:38,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:49:38,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:49:38,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:49:38,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:49:38,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 06:49:38,733 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:49:38,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:49:38,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:49:38,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:49:38,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:49:38,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:49:38,734 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:49:38,734 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:49:38,735 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:49:38,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:49:38,735 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:49:38,735 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:49:38,735 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:49:38,735 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:49:38,735 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:49:38,735 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:49:38,735 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:49:38,736 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:49:38,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:49:38,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:49:38,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:49:38,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:49:38,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:49:38,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:49:38,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:49:38,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:49:38,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:49:38,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:49:38,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:49:38,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:49:38,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:49:38,738 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:49:38,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:49:38,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:49:38,738 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:49:38,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:49:38,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:49:38,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:49:38,738 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_b14f5d0d-2e22-49c4-b497-b0d687213e87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 884fded8e66f5d1fb48ea41b5fc2a80efc48c733a21e019f076525ed24611a3d [2022-12-14 06:49:38,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:49:38,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:49:38,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:49:38,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:49:38,931 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:49:38,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2022-12-14 06:49:41,469 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:49:41,870 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:49:41,871 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i [2022-12-14 06:49:41,893 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/data/d8ed8b99d/d65e3dbeac274fdbb03d6ec60d0d19b3/FLAG228ef6573 [2022-12-14 06:49:42,050 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/data/d8ed8b99d/d65e3dbeac274fdbb03d6ec60d0d19b3 [2022-12-14 06:49:42,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:49:42,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:49:42,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:49:42,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:49:42,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:49:42,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:49:42" (1/1) ... [2022-12-14 06:49:42,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ca9817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:42, skipping insertion in model container [2022-12-14 06:49:42,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:49:42" (1/1) ... [2022-12-14 06:49:42,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:49:42,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:49:42,363 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_b14f5d0d-2e22-49c4-b497-b0d687213e87/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2022-12-14 06:49:42,370 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_b14f5d0d-2e22-49c4-b497-b0d687213e87/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2022-12-14 06:49:43,017 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,018 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,018 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,019 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,020 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,035 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,035 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,038 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,038 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,108 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:49:43,109 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:49:43,109 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:49:43,115 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 06:49:43,117 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 06:49:43,118 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 06:49:43,352 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 06:49:43,353 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 06:49:43,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 06:49:43,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 06:49:43,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 06:49:43,358 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 06:49:43,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 06:49:43,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 06:49:43,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 06:49:43,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 06:49:43,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 06:49:43,479 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 06:49:43,505 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 06:49:43,513 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:49:43,533 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:49:43,539 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,539 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,579 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 06:49:43,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:49:43,617 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:49:43,626 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_b14f5d0d-2e22-49c4-b497-b0d687213e87/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4492,4505] [2022-12-14 06:49:43,626 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_b14f5d0d-2e22-49c4-b497-b0d687213e87/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_harness.i[4552,4565] [2022-12-14 06:49:43,648 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,649 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,649 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,649 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,650 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,653 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,654 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,654 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,655 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,659 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:49:43,659 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:49:43,659 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:49:43,661 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 06:49:43,662 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 06:49:43,662 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 06:49:43,675 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 06:49:43,675 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 06:49:43,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 06:49:43,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 06:49:43,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 06:49:43,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 06:49:43,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 06:49:43,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 06:49:43,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 06:49:43,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 06:49:43,679 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 06:49:43,703 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 06:49:43,726 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 06:49:43,732 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:49:43,747 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:49:43,755 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,755 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:49:43,778 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 06:49:43,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:49:43,936 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:49:43,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43 WrapperNode [2022-12-14 06:49:43,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:49:43,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:49:43,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:49:43,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:49:43,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:43,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,031 INFO L138 Inliner]: procedures = 690, calls = 2636, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 870 [2022-12-14 06:49:44,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:49:44,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:49:44,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:49:44,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:49:44,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,073 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:49:44,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:49:44,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:49:44,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:49:44,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (1/1) ... [2022-12-14 06:49:44,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:49:44,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:49:44,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:49:44,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:49:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-14 06:49:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-14 06:49:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:49:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 06:49:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 06:49:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-12-14 06:49:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 06:49:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 06:49:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:49:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 06:49:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 06:49:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 06:49:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 06:49:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:49:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:49:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:49:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:49:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:49:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 06:49:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 06:49:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-14 06:49:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-14 06:49:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 06:49:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 06:49:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 06:49:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 06:49:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:49:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:49:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-12-14 06:49:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-12-14 06:49:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 06:49:44,150 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 06:49:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 06:49:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 06:49:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 06:49:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:49:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-12-14 06:49:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:49:44,361 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:49:44,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:49:45,240 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:49:45,373 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:49:45,374 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:49:45,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:49:45 BoogieIcfgContainer [2022-12-14 06:49:45,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:49:45,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:49:45,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:49:45,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:49:45,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:49:42" (1/3) ... [2022-12-14 06:49:45,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d0834c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:49:45, skipping insertion in model container [2022-12-14 06:49:45,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:49:43" (2/3) ... [2022-12-14 06:49:45,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d0834c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:49:45, skipping insertion in model container [2022-12-14 06:49:45,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:49:45" (3/3) ... [2022-12-14 06:49:45,385 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_harness.i [2022-12-14 06:49:45,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:49:45,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:49:45,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:49:45,455 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;@2b33d60a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:49:45,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:49:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-12-14 06:49:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 06:49:45,469 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:49:45,469 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:49:45,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:49:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:49:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash -493764901, now seen corresponding path program 1 times [2022-12-14 06:49:45,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:49:45,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193100676] [2022-12-14 06:49:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:49:45,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:49:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:49:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 06:49:53,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:49:53,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193100676] [2022-12-14 06:49:53,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193100676] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:49:53,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921265697] [2022-12-14 06:49:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:49:53,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:49:53,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:49:53,424 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:49:53,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14f5d0d-2e22-49c4-b497-b0d687213e87/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:49:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:49:53,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 110 conjunts are in the unsatisfiable core [2022-12-14 06:49:53,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:49:54,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 06:49:54,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:49:59,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 06:49:59,804 INFO L350 Elim1Store]: Elim1 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 81 treesize of output 65 [2022-12-14 06:49:59,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 06:49:59,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 06:49:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 06:49:59,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:50:01,927 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-12-14 06:56:21,970 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.