./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/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_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V --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 --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:22:19,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:22:19,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:22:19,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:22:19,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:22:19,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:22:19,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:22:19,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:22:19,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:22:19,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:22:19,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:22:19,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:22:19,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:22:19,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:22:19,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:22:19,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:22:19,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:22:19,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:22:19,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:22:19,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:22:19,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:22:19,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:22:19,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:22:19,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:22:19,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:22:19,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:22:19,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:22:19,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:22:19,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:22:19,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:22:19,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:22:19,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:22:19,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:22:19,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:22:19,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:22:19,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:22:19,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:22:19,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:22:19,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:22:19,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:22:19,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:22:19,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:22:19,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:22:19,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:22:19,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:22:19,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:22:19,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:22:19,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:22:19,277 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:22:19,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:22:19,278 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:22:19,278 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:22:19,278 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:22:19,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:22:19,279 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:22:19,279 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:22:19,279 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:22:19,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:22:19,280 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:22:19,280 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:22:19,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:22:19,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:22:19,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:22:19,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:22:19,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:22:19,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:22:19,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:22:19,283 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:22:19,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:22:19,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:22:19,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:22:19,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:22:19,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:22:19,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:22:19,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:22:19,285 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:22:19,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:22:19,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:22:19,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:22:19,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:22:19,286 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_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2021-11-23 02:22:19,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:22:19,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:22:19,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:22:19,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:22:19,620 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:22:19,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-23 02:22:19,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/data/97e8a48de/a21d299d13314cc6b79aa5b3fca78d54/FLAG2d62ce7a8 [2021-11-23 02:22:20,724 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:22:20,725 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2021-11-23 02:22:20,789 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/data/97e8a48de/a21d299d13314cc6b79aa5b3fca78d54/FLAG2d62ce7a8 [2021-11-23 02:22:21,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/data/97e8a48de/a21d299d13314cc6b79aa5b3fca78d54 [2021-11-23 02:22:21,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:22:21,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:22:21,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:22:21,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:22:21,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:22:21,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:21" (1/1) ... [2021-11-23 02:22:21,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425036c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:21, skipping insertion in model container [2021-11-23 02:22:21,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:21" (1/1) ... [2021-11-23 02:22:21,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:22:21,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:22:21,658 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_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-23 02:22:21,667 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_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-23 02:22:22,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:22,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:22,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:22,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:22,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:22,730 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:22,731 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:22,733 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:22,734 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:23,254 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:22:23,256 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:22:23,257 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:22:23,259 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:22:23,261 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:22:23,262 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:22:23,263 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:22:23,264 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:22:23,265 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:22:23,266 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:22:23,561 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:22:23,780 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:23,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:23,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:22:24,025 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:22:24,043 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_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2021-11-23 02:22:24,044 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_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2021-11-23 02:22:24,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,093 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,094 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,095 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,132 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 02:22:24,133 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 02:22:24,134 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 02:22:24,135 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 02:22:24,136 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 02:22:24,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 02:22:24,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 02:22:24,138 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 02:22:24,138 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 02:22:24,139 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 02:22:24,161 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 02:22:24,224 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,225 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 02:22:24,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:22:24,541 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:22:24,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24 WrapperNode [2021-11-23 02:22:24,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:22:24,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:22:24,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:22:24,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:22:24,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,807 INFO L137 Inliner]: procedures = 691, calls = 2649, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 829 [2021-11-23 02:22:24,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:22:24,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:22:24,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:22:24,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:22:24,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:22:24,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:22:24,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:22:24,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:22:24,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (1/1) ... [2021-11-23 02:22:24,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:22:24,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:22:24,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:22:24,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:22:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-23 02:22:25,012 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-23 02:22:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:22:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 02:22:25,014 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 02:22:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:22:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-11-23 02:22:25,016 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-11-23 02:22:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:22:25,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:22:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:22:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:22:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-23 02:22:25,017 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-23 02:22:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:22:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:22:25,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:22:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 02:22:25,019 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 02:22:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-23 02:22:25,020 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-23 02:22:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:22:25,020 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:22:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:22:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:22:25,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:22:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:22:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-23 02:22:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-23 02:22:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2021-11-23 02:22:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2021-11-23 02:22:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:22:25,403 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:22:25,405 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:22:26,943 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:22:27,162 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:22:27,162 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:22:27,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:27 BoogieIcfgContainer [2021-11-23 02:22:27,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:22:27,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:22:27,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:22:27,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:22:27,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:22:21" (1/3) ... [2021-11-23 02:22:27,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751eec6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:27, skipping insertion in model container [2021-11-23 02:22:27,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:24" (2/3) ... [2021-11-23 02:22:27,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751eec6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:27, skipping insertion in model container [2021-11-23 02:22:27,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:27" (3/3) ... [2021-11-23 02:22:27,176 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2021-11-23 02:22:27,188 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:22:27,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:22:27,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:22:27,277 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 [2021-11-23 02:22:27,277 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:22:27,310 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) [2021-11-23 02:22:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:22:27,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:22:27,324 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:22:27,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:22:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:22:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1596270366, now seen corresponding path program 1 times [2021-11-23 02:22:27,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:22:27,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113039338] [2021-11-23 02:22:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:27,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:22:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-23 02:22:30,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:22:30,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113039338] [2021-11-23 02:22:30,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113039338] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:22:30,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301184721] [2021-11-23 02:22:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:22:30,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:22:30,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:22:30,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:22:30,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0edd7e2a-4bbd-42bc-8ba7-3d0d676e8ecd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:22:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:22:31,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-23 02:22:31,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:22:31,649 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 13 treesize of output 9 [2021-11-23 02:22:31,656 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 13 treesize of output 9 [2021-11-23 02:22:32,353 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 75 treesize of output 71 [2021-11-23 02:22:32,362 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 71 treesize of output 67 [2021-11-23 02:22:32,370 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 67 treesize of output 59 [2021-11-23 02:22:32,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:22:32,401 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:22:32,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2021-11-23 02:22:32,408 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 41 treesize of output 33 [2021-11-23 02:22:34,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:22:34,741 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-11-23 02:22:34,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 60 [2021-11-23 02:22:34,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:22:34,756 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-11-23 02:22:34,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 35 [2021-11-23 02:22:35,333 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 21 treesize of output 13 [2021-11-23 02:22:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:22:35,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:22:37,139 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2021-11-23 02:23:05,614 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.