./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 4e7fbc69 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_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/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_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 16:00:13,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:00:13,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:00:13,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:00:13,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:00:13,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:00:13,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:00:13,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:00:13,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:00:13,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:00:13,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:00:13,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:00:13,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:00:13,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:00:13,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:00:13,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:00:13,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:00:13,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:00:13,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:00:13,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:00:13,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:00:13,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:00:13,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:00:13,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:00:13,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:00:13,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:00:13,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:00:13,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:00:13,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:00:13,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:00:13,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:00:13,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:00:13,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:00:13,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:00:13,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:00:13,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:00:13,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:00:13,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:00:13,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:00:13,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:00:13,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:00:13,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 16:00:13,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:00:13,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:00:13,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:00:13,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:00:13,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:00:13,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:00:13,191 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:00:13,191 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:00:13,191 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:00:13,192 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:00:13,193 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:00:13,193 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:00:13,193 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:00:13,193 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:00:13,194 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:00:13,194 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:00:13,194 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:00:13,194 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:00:13,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:00:13,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:00:13,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:00:13,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:00:13,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:00:13,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:00:13,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:00:13,196 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:00:13,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:00:13,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:00:13,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:00:13,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:00:13,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:00:13,198 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:00:13,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:00:13,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:00:13,198 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:00:13,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:00:13,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:00:13,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:00:13,199 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_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2022-11-23 16:00:13,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:00:13,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:00:13,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:00:13,500 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:00:13,501 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:00:13,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-11-23 16:00:16,570 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:00:17,190 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:00:17,191 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-11-23 16:00:17,222 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/data/57cb2fcf6/e3e87a0a822742c6a29704c213a6626d/FLAG81bdb77a7 [2022-11-23 16:00:17,237 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/data/57cb2fcf6/e3e87a0a822742c6a29704c213a6626d [2022-11-23 16:00:17,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:00:17,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:00:17,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:00:17,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:00:17,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:00:17,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:00:17" (1/1) ... [2022-11-23 16:00:17,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661df232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:17, skipping insertion in model container [2022-11-23 16:00:17,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:00:17" (1/1) ... [2022-11-23 16:00:17,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:00:17,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:00:17,688 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_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-11-23 16:00:17,699 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_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-11-23 16:00:19,101 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,102 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,103 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,103 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,105 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,126 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,127 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,131 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,138 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 16:00:19,592 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 16:00:19,593 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 16:00:19,594 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 16:00:19,596 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 16:00:19,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 16:00:19,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 16:00:19,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 16:00:19,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 16:00:19,600 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 16:00:19,842 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 16:00:19,938 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:19,938 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:00:20,117 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:00:20,175 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_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-11-23 16:00:20,176 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_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-11-23 16:00:20,226 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,226 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,227 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,227 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,228 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,242 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,242 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,246 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,247 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,299 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 16:00:20,299 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 16:00:20,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 16:00:20,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 16:00:20,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 16:00:20,303 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 16:00:20,303 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 16:00:20,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 16:00:20,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 16:00:20,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 16:00:20,330 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 16:00:20,376 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,377 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 16:00:20,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:00:20,658 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:00:20,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20 WrapperNode [2022-11-23 16:00:20,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:00:20,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:00:20,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:00:20,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:00:20,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,845 INFO L138 Inliner]: procedures = 691, calls = 2648, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 828 [2022-11-23 16:00:20,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:00:20,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:00:20,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:00:20,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:00:20,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:00:20,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:00:20,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:00:20,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:00:20,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (1/1) ... [2022-11-23 16:00:20,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:00:20,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:20,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:00:21,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:00:21,041 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-23 16:00:21,041 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-23 16:00:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:00:21,042 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-23 16:00:21,042 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-23 16:00:21,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:00:21,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-11-23 16:00:21,044 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-11-23 16:00:21,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 16:00:21,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 16:00:21,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 16:00:21,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:00:21,044 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-23 16:00:21,044 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-23 16:00:21,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 16:00:21,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:00:21,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:00:21,046 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-23 16:00:21,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-23 16:00:21,046 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-23 16:00:21,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-23 16:00:21,046 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 16:00:21,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 16:00:21,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:00:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 16:00:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 16:00:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 16:00:21,047 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-23 16:00:21,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-11-23 16:00:21,048 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2022-11-23 16:00:21,048 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2022-11-23 16:00:21,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:00:21,367 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:00:21,370 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:00:23,021 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:00:23,204 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:00:23,204 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:00:23,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:00:23 BoogieIcfgContainer [2022-11-23 16:00:23,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:00:23,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:00:23,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:00:23,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:00:23,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:00:17" (1/3) ... [2022-11-23 16:00:23,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c09e6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:00:23, skipping insertion in model container [2022-11-23 16:00:23,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:20" (2/3) ... [2022-11-23 16:00:23,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c09e6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:00:23, skipping insertion in model container [2022-11-23 16:00:23,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:00:23" (3/3) ... [2022-11-23 16:00:23,217 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2022-11-23 16:00:23,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:00:23,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:00:23,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:00:23,296 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;@2285f547, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:00:23,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:00:23,301 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) [2022-11-23 16:00:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 16:00:23,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:23,313 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] [2022-11-23 16:00:23,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:00:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1596270366, now seen corresponding path program 1 times [2022-11-23 16:00:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:23,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515843311] [2022-11-23 16:00:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:23,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 16:00:32,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:32,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515843311] [2022-11-23 16:00:32,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515843311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:32,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298218184] [2022-11-23 16:00:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:32,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:32,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:32,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:32,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d76d6a4-81d0-49d3-b4da-9ac3d1537547/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:00:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:33,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-23 16:00:33,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:33,667 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 [2022-11-23 16:00:33,673 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 [2022-11-23 16:00:34,394 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 17 treesize of output 13 [2022-11-23 16:00:34,400 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 17 treesize of output 13 [2022-11-23 16:00:34,407 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 [2022-11-23 16:00:34,415 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 [2022-11-23 16:00:34,430 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 [2022-11-23 16:00:36,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:00:36,376 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 16:00:36,376 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 39 [2022-11-23 16:00:36,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:00:36,391 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-23 16:00:36,392 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 32 [2022-11-23 16:00:36,918 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 [2022-11-23 16:00:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 16:00:36,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:38,503 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-23 16:00:55,697 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.