./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS --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 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- 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-8393723 [2022-11-19 06:43:21,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:43:21,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:43:21,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:43:21,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:43:21,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:43:21,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:43:21,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:43:21,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:43:21,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:43:21,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:43:21,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:43:21,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:43:21,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:43:21,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:43:21,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:43:21,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:43:21,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:43:21,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:43:21,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:43:21,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:43:21,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:43:21,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:43:21,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:43:21,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:43:21,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:43:21,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:43:21,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:43:21,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:43:21,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:43:21,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:43:21,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:43:21,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:43:21,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:43:21,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:43:21,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:43:21,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:43:21,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:43:21,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:43:21,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:43:21,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:43:21,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:43:21,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:43:21,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:43:21,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:43:21,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:43:21,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:43:21,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:43:21,851 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:43:21,852 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:43:21,852 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:43:21,852 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:43:21,852 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:43:21,852 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:43:21,853 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:43:21,853 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:43:21,853 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:43:21,853 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:43:21,853 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:43:21,854 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:43:21,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:43:21,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:43:21,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:43:21,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:43:21,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:43:21,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:43:21,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:43:21,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:43:21,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:43:21,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:43:21,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:43:21,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:43:21,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:43:21,857 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:43:21,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:43:21,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:43:21,858 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:43:21,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:43:21,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:43:21,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:43:21,859 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_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2022-11-19 06:43:22,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:43:22,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:43:22,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:43:22,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:43:22,149 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:43:22,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-11-19 06:43:22,219 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/data/7b2d92eec/3147b46fe252403f868edee8345efc0f/FLAGb5861ecff [2022-11-19 06:43:23,202 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:43:23,203 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-11-19 06:43:23,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/data/7b2d92eec/3147b46fe252403f868edee8345efc0f/FLAGb5861ecff [2022-11-19 06:43:23,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/data/7b2d92eec/3147b46fe252403f868edee8345efc0f [2022-11-19 06:43:23,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:43:23,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:43:23,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:43:23,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:43:23,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:43:23,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:43:23" (1/1) ... [2022-11-19 06:43:23,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f420e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:23, skipping insertion in model container [2022-11-19 06:43:23,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:43:23" (1/1) ... [2022-11-19 06:43:23,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:43:23,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:43:24,079 WARN L234 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_45b5f669-c2df-4b35-8086-cbc875361c8c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-11-19 06:43:24,087 WARN L234 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_45b5f669-c2df-4b35-8086-cbc875361c8c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-11-19 06:43:25,100 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,101 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,101 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,102 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,104 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,118 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,119 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,121 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,122 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 06:43:25,505 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 06:43:25,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 06:43:25,508 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 06:43:25,510 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 06:43:25,511 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 06:43:25,516 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 06:43:25,517 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 06:43:25,519 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 06:43:25,520 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 06:43:25,772 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 06:43:25,910 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,919 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:25,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:43:26,035 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:43:26,074 WARN L234 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_45b5f669-c2df-4b35-8086-cbc875361c8c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-11-19 06:43:26,075 WARN L234 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_45b5f669-c2df-4b35-8086-cbc875361c8c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-11-19 06:43:26,182 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,182 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,183 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,183 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,185 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,200 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,201 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,202 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,202 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,253 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 06:43:26,254 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 06:43:26,255 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 06:43:26,256 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 06:43:26,257 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 06:43:26,257 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 06:43:26,258 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 06:43:26,259 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 06:43:26,259 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 06:43:26,262 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 06:43:26,298 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 06:43:26,387 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,387 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:43:26,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:43:26,730 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:43:26,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26 WrapperNode [2022-11-19 06:43:26,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:43:26,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:43:26,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:43:26,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:43:26,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:26,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:26,958 INFO L138 Inliner]: procedures = 691, calls = 2648, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 828 [2022-11-19 06:43:26,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:43:26,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:43:26,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:43:26,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:43:26,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:26,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:26,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:26,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:27,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:27,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:27,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:27,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:27,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:43:27,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:43:27,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:43:27,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:43:27,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (1/1) ... [2022-11-19 06:43:27,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:43:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:43:27,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:43:27,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:43:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-19 06:43:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-19 06:43:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:43:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 06:43:27,141 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 06:43:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:43:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-11-19 06:43:27,142 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-11-19 06:43:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:43:27,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:43:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:43:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:43:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-19 06:43:27,144 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-19 06:43:27,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:43:27,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:43:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:43:27,145 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 06:43:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 06:43:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-19 06:43:27,146 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-19 06:43:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:43:27,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:43:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:43:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:43:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:43:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:43:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-19 06:43:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-19 06:43:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2022-11-19 06:43:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2022-11-19 06:43:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:43:27,455 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:43:27,457 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:43:28,906 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:43:29,121 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:43:29,121 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:43:29,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:43:29 BoogieIcfgContainer [2022-11-19 06:43:29,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:43:29,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:43:29,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:43:29,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:43:29,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:43:23" (1/3) ... [2022-11-19 06:43:29,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1dc479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:43:29, skipping insertion in model container [2022-11-19 06:43:29,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:43:26" (2/3) ... [2022-11-19 06:43:29,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1dc479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:43:29, skipping insertion in model container [2022-11-19 06:43:29,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:43:29" (3/3) ... [2022-11-19 06:43:29,134 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2022-11-19 06:43:29,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:43:29,163 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:43:29,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:43:29,261 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;@4fbb1e6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:43:29,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:43:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 57 states have internal predecessors, (68), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-19 06:43:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 06:43:29,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:43:29,279 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:43:29,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:43:29,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:43:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1596270366, now seen corresponding path program 1 times [2022-11-19 06:43:29,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:43:29,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174190881] [2022-11-19 06:43:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:29,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:43:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 06:43:38,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:43:38,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174190881] [2022-11-19 06:43:38,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174190881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:43:38,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167134175] [2022-11-19 06:43:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:38,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:43:38,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:43:38,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:43:38,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b5f669-c2df-4b35-8086-cbc875361c8c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:43:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:39,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-19 06:43:39,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:39,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:43:39,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 06:43:40,455 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 17 treesize of output 13 [2022-11-19 06:43:40,462 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 17 treesize of output 13 [2022-11-19 06:43:40,468 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 13 [2022-11-19 06:43:40,473 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 13 [2022-11-19 06:43:40,490 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 6 treesize of output 5 [2022-11-19 06:43:42,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:43:42,702 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:43:42,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 68 [2022-11-19 06:43:42,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:43:42,717 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 06:43:42,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 48 [2022-11-19 06:43:43,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-19 06:43:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:43:43,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:43:44,975 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-19 06:44:00,181 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.